10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

2014 FORM 10-K

(Mark One)

þ   Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the fiscal year ended December 31,2014

OR

o   Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from _________ to________

Commission file number   1-12935

DENBURY RESOURCES INC.

(Exact name of Registrant as specified in its charter)

Delaware	20-0467835
(State or other jurisdictionof incorporation or organization)	(I.R.S. EmployerIdentification No.)
5320 Legacy Drive, Plano, TX	75024
(Address of principal executive offices)	(Zip Code)

Registrant's telephone number, including area code: (972) 673-2000

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class:	Name of Each Exchange on Which Registered:
Common Stock $.001 Par Value	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes þ   No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o   No þ

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes þ   No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ   No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. þ

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a small reporting company.  See the definitions of "large accelerated filer", "accelerated filer", and "small reporting company" in Rule 12-b2 of the Exchange Act.

Large accelerated filer þ   Accelerated filer o   Non-accelerated filer o  Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes o   No þ

The aggregate market value of the registrant's common stock held by non-affiliates, based on the closing price of the registrant's common stock as of the last business day of the registrant's most recently completed second fiscal quarter was $6,386,671,272.

The number of shares outstanding of the registrant's Common Stock as of January 31, 2015, was 356,635,504.

DOCUMENTS INCORPORATED BY REFERENCE

Document:	Incorporated as to:
1. Notice and Proxy Statement for the Annual Meeting of Stockholders to be held May 19, 2015.	1.  Part III, Items 10, 11, 12, 13, 14

Denbury Resources Inc.

2014 Annual Report on Form 10-K

 Table of Contents

		Page
	Glossary and Selected Abbreviations	3
	PART I
Item 1.	Business and Properties	5
Item 1A.	Risk Factors	26
Item 1B.	Unresolved Staff Comments	34
Item 2.	Properties	34
Item 3.	Legal Proceedings	35
Item 4.	Mine Safety Disclosures	35
	PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	36
Item 6.	Selected Financial Data	39
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	41
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	71
Item 8.	Financial Statements and Supplementary Information	71
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	114
Item 9A.	Controls and Procedures	114
Item 9B.	Other Information	114
	PART III
Item 10.	Directors, Executive Officers and Corporate Governance	115
Item 11.	Executive Compensation	115
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	115
Item 13.	Certain Relationships and Related Transactions, and Director Independence	115
Item 14.	Principal Accountant Fees and Services	115
	PART IV
Item 15.	Exhibits and Financial Statement Schedules	116
	Signatures	123
	Index to Exhibits	124

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Denbury Resources Inc.

Glossary and Selected Abbreviations

Bbl	One stock tank barrel, of 42 U.S. gallons liquid volume, used herein in reference to crude oil or other liquid hydrocarbons.
Bbls/d	Barrels of oil or other liquid hydrocarbons produced per day.
Bcf	One billion cubic feet of natural gas, CO2 or helium.
BOE	One barrel of oil equivalent, using the ratio of one barrel of crude oil, condensate or natural gas liquids to 6 Mcf of natural gas.
BOE/d	BOEs produced per day.
Btu	British thermal unit, which is the heat required to raise the temperature of a one-pound mass of water from 58.5 to 59.5 degrees Fahrenheit (°F).
CO2	Carbon dioxide.
EOR	Enhanced oil recovery. In the context of our oil and natural gas production, EOR is also referred to as tertiary recovery.
Finding and development costs	The average cost per BOE to find and develop proved reserves during a given period. It is calculated by dividing (a) costs, which include the sum of (i) the total acquisition, exploration and development costs incurred during the period plus (ii) future development and abandonment costs related to the specified property or group of properties, by (b) the sum of (i) the change in total proved reserves during the period plus (ii) total production during that period.
GAAP	Accounting principles generally accepted in the United States of America.
MBbls	One thousand barrels of crude oil or other liquid hydrocarbons.
MBOE	One thousand BOEs.
Mcf	One thousand cubic feet of natural gas, CO2 or helium at a temperature base of 60 degrees Fahrenheit (°F) and at the legal pressure base (14.65 to 15.025 pounds per square inch absolute) of the state or area in which the reserves are located or sales are made.
Mcf/d	One thousand cubic feet of natural gas, CO2 or helium produced per day.
MMBbls	One million barrels of crude oil or other liquid hydrocarbons.
MMBOE	One million BOEs.
MMBtu	One million Btus.
MMcf	One million cubic feet of natural gas, CO2 or helium.
MMcf/d	One million cubic feet of natural gas, CO2 or helium per day.
Noncash fair value adjustments on commodity derivatives	The net change during the period in the fair market value of commodity derivative positions. Noncash fair value adjustments on commodity derivatives is a non-GAAP measure and makes up only a portion of "Derivatives expense (income)" in the Consolidated Statements of Operations, which also includes the impact of settlements on commodity derivatives during the period. Its use is further discussed in Management's Discussion and Analysis of Financial Condition and Results of Operations – Results of Operations – Operating Results Table.
NYMEX	The New York Mercantile Exchange. In the context of our oil and natural gas sales, NYMEX pricing represents the West Texas Intermediate benchmark price for crude oil and Henry Hub benchmark price for natural gas.
Probable Reserves*	Reserves that are less certain to be recovered than proved reserves but which, together with proved reserves, are as likely as not to be recovered.
Proved Developed Reserves*	Reserves that can be expected to be recovered through existing wells with existing equipment and operating methods.

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Denbury Resources Inc.

Proved Reserves*	Reserves that geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions.
Proved Undeveloped Reserves*	Reserves that are expected to be recovered from new wells on undrilled acreage or from existing wells, in each case where a relatively major expenditure is required.
PV-10 Value	The estimated future gross revenue to be generated from the production of proved reserves, net of estimated future production, development and abandonment costs, and before income taxes, discounted to a present value using an annual discount rate of 10%. PV-10 Values were prepared using average hydrocarbon prices equal to the unweighted arithmetic average of hydrocarbon prices on the first day of each month within the 12-month period preceding the reporting date.  PV-10 Value is a non-GAAP measure and does not purport to represent the fair value of our oil and natural gas reserves; its use is further discussed in footnote 5 to the table included in Item 1, Estimated Net Quantities of Proved Oil and Natural Gas Reserves and Present Value of Estimated Future Net Revenues – Oil and Natural Gas Reserve Estimates.
Tcf	One trillion cubic feet of natural gas, CO2 or helium.
Tertiary Recovery	A term used to represent techniques for extracting incremental oil out of existing oil fields (as opposed to primary and secondary recovery or "non-tertiary" recovery). In the context of our oil and natural gas production, tertiary recovery is also referred to as EOR.

* This definition is an abbreviated version of the complete definition set forth in Rule 4-10(a) of Regulation S-X. For the complete definition see:

http://www.ecfr.gov/cgi-bin/retrieveECFR?gp=1&SID=6f0cbc2a2934b1576e95496863cfb7ef&ty=HTML&h=L&r=SECTION&n=se17.3.210_14_610.

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Denbury Resources Inc.

PART I

Item 1. Business and Properties

GENERAL

Denbury Resources Inc., a Delaware corporation, is an independent oil and natural gas company with 437.7 MMBOE of estimated proved oil and natural gas reserves as of December 31, 2014, of which 83% is oil.  Our operations are focused in two key operating areas: the Gulf Coast and Rocky Mountain regions.  Our goal is to increase the value of our properties through a combination of exploitation, drilling and proven engineering extraction practices, with the most significant emphasis relating to CO₂ enhanced oil recovery operations.

As part of our corporate strategy, we are committed to strong financial discipline, efficient operations and creating long-term value for our shareholders through the following key principles:

• target specific regions where we either have, or believe we can create, a competitive advantage as a result of our ownership or use of CO₂ reserves, oil fields and CO₂ infrastructure;

• secure properties where we believe additional value can be created through tertiary recovery operations and a combination of other exploitation, development, exploration and marketing techniques;

• acquire properties that give us a majority working interest and operational control or where we believe we can ultimately obtain it;

• maximize the value and cash flow generated from our operations by increasing production and reserves while controlling costs;

• optimize the timing and allocation of capital among our investment opportunities to maximize the rates of return on our investments;

• return a portion of the cash flow generated from our operations to shareholders through regular quarterly dividend payments at a sustainable rate, and strategic repurchases of our common stock made from time to time;

• exercise financial discipline by balancing our development capital expenditures and dividends with our cash flow from operations; and

• attract and maintain a highly competitive team of experienced and incentivized personnel.

Denbury has been publicly traded on the New York Stock Exchange since 1997. Our corporate headquarters is located at 5320 Legacy Drive, Plano, Texas 75024, and our phone number is 972-673-2000. At December 31, 2014, we had 1,523 employees, 813 of whom were employed in field operations or at our field offices.  We make our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports, filed or furnished pursuant to section 13(a) or 15(d) of the Securities Exchange Act of 1934, available free of charge on or through our website, www.denbury.com, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC.  The public may read and copy any materials we file with the SEC at the SEC's Public Reference Room at 100 F Street, NE, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also maintains a website, http://www.sec.gov, which contains reports, proxy and information statements and other information filed by Denbury.  Throughout this Annual Report on Form 10-K ("Form 10-K") we use the terms "Denbury," "Company," "we," "our," and "us" to refer to Denbury Resources Inc. and, as the context may require, its subsidiaries.

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Denbury Resources Inc.

2014 BUSINESS DEVELOPMENTS

In response to the decline in oil prices during the latter part of 2014, in November 2014, we announced a significant reduction in our capital spending plans, reducing projected 2015 capital spending to $550 million, or roughly half of 2014 levels, and decreasing our estimated dividend rate for 2015 to $0.40 per common share on an annualized basis, from the previous projection of a rate ranging between $0.50 per common share to $0.60 per common share on an annualized basis. At the same time, we announced that our share repurchase program was being suspended in order to protect our financial health and preserve liquidity amid a period of declining oil prices and overall oil price uncertainty. As a result of further oil price declines in late 2014 and early 2015, in January 2015, we announced another change in our planned 2015 dividend rate, as the Company's Board of Directors declared a dividend of $0.0625 per common share for the first quarter of 2015, or $0.25 per common share on an annualized basis, a level consistent with our 2014 dividend rate.

2014 business developments also included the following:

• Increased our average tertiary oil production to 41,079 Bbls/d in 2014, a 7%increase from average tertiary oil production in 2013, primarily due to continued field development and expansion of facilities in our existing CO₂ floods at Hastings, Heidelberg, Oyster Bayou, Tinsley, and Bell Creek fields.

• Declared quarterly cash dividends of $0.0625 per common share during each quarter of 2014, with aggregate dividends of $87.0 million, or $0.25 per common share, paid during the year ended December 31, 2014.

• Repurchased a total of 12.4 million shares of Denbury common stock for $200.4 million during the first quarter of 2014.

• Reduced our interest expense by refinancing a portion of our indebtedness. In April 2014, we issued $1.25 billion of 5½% Senior Subordinated Notes due 2022. The net proceeds of approximately $1.23 billion, after issuance costs, were used to repurchase and redeem our 8¼% Senior Subordinated Notes due 2020 and to pay down approximately $150 million of outstanding borrowings on our bank credit facility.

• Amended and restated our bank credit facility, effective as of December 9, 2014, to provide for a borrowing base of $3.0 billion, aggregate lender commitments of $1.6 billion, and an extended termination date of the facility from May 2016 to December 2019.

• During the fourth quarter of 2014, we created innovation and improvement teams to evaluate each of our assets during 2015 with a goal of increasing the value of both existing assets and future projects by optimizing field operational and development plans, increasing CO₂ flood recovery efficiency and reducing costs.

OIL AND NATURAL GAS OPERATIONS

Summary. Our oil and natural gas properties are concentrated in the Gulf Coast and Rocky Mountain regions of the United States.  Currently our properties with proved and producing reserves in the Gulf Coast region are situated in Mississippi, Texas, Louisiana and Alabama, and in the Rocky Mountain region are situated in Montana, North Dakota and Wyoming. Our primary focus is using CO₂ in EOR, and our current portfolio of CO₂ EOR projects provides us significant oil production and reserve growth potential in the future.  

We have been conducting and expanding EOR operations on our assets in the Gulf Coast region since 1999, and as a result, we currently have many more CO₂ EOR projects in this region than in the Rocky Mountain region. In the Gulf Coast region, we own what is, to our knowledge, the region's only significant naturally occurring source of CO₂, and these large volumes of naturally occurring CO₂ have allowed us to significantly grow our production in that region. In addition to the sources of CO₂ we currently own, we purchase and use CO₂ captured from industrial sources which would otherwise be released into the atmosphere (sometimes referred to as anthropogenic, man-made or industrial-source CO₂) in our tertiary operations. These industrial sources of CO₂ help us recover additional oil from mature oil fields and, we believe, also provide an economical way to reduce atmospheric CO₂ emissions through the concurrent underground storage of CO₂ which occurs as part of our oil-producing EOR operations. We expect the amount of CO₂ we use which is captured from industrial sources to grow in the future.

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Denbury Resources Inc.

Through December 31, 2014, we have invested a total of $4.1 billion in our tertiary fields in the Gulf Coast region (including acquisition costs and goodwill) and, in addition to recovering all of these costs, we have generated $1.9 billion of excess net cash flow (revenue less operating expenses and capital expenditures, excluding capital expenditures related to pipelines and CO₂ source fields).  Of this total invested amount, approximately $286.9 million (7%) has been spent on fields that did not have any appreciable proved reserves at December 31, 2014.  The proved oil reserves in our Gulf Coast tertiary oilfields have a year-end 2014 PV-10 Value of $4.8 billion, calculated using average 2014 NYMEX oil prices of $94.99.  Including the Green Pipeline, which currently serves our Hastings and Oyster Bayou fields, we have invested a total of $2.2 billion in CO₂ pipelines and CO₂ source fields in the Gulf Coast region.

We began operations in the Rocky Mountain region in 2010 in connection with, and following, our merger with Encore Acquisition Company ("Encore").  We completed construction of the first section of the 20-inch Greencore Pipeline (our first CO₂ pipeline in the Rocky Mountain region) in late 2012, and received our first CO₂ deliveries from the ConocoPhillips-operated Lost Cabin gas plant in central Wyoming during the first quarter of 2013. We started CO₂ injections at our Bell Creek Field in Montana during the second quarter of 2013, with tertiary oil production from this field commencing in the third quarter of 2013. In addition to our current tertiary flood in the Rocky Mountain region, we currently have long-term plans to flood Hartzog Draw Field, Grieve Field, and the Cedar Creek Anticline ("CCA") with CO₂ after we perform additional non-tertiary development of these fields. CCA is a geological structure over 126 miles in length consisting of 14 different operating areas. Our Riley Ridge Field acquisition (completed in two stages) in 2010 and 2011, the acquisition of an interest in CO₂ reserves in LaBarge Field from Exxon Mobil Corporation and its wholly-owned subsidiary XTO Energy Inc. (collectively, "ExxonMobil") in 2012, and the previously mentioned deliveries from the ConocoPhillips-operated Lost Cabin gas plant are expected to provide us the CO₂ necessary for our current inventory of CO₂ EOR projects in the Rocky Mountain region.

Field Summary Table. The following table provides a summary by field and region of selected proved oil and natural gas reserve information, including total proved reserve quantities and the associated PV-10 Value of those reserves as of December 31, 2014, and average daily production for 2014, all based on Denbury's net revenue interest ("NRI").  The reserve estimates for all years presented were prepared by DeGolyer and MacNaughton ("D&M"), independent petroleum engineers located in Dallas, Texas.  We serve as operator of virtually all of our significant properties, in which we also own most of the interests, although typically less than a 100% working interest, and a lesser NRI due to royalties and other burdens.  For additional oil and natural gas reserves information, see Estimated Net Quantities of Proved Oil and Natural Gas Reserves and Present Value of Estimated Future Net Revenues below.

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Denbury Resources Inc.

	Proved Reserves as of December 31, 2014 (1)							2014 Average Daily Production
	Oil (MBbls)	Natural Gas (MMcf)	MBOEs	% of Company Total MBOEs		PV-10 Value (2) (000's)		Oil (Bbls/d)	Natural Gas (Mcf/d)	Average 2014 NRI
Tertiary oil and gas properties
Gulf Coast region
Mature properties:
Brookhaven	8,373	—	8,373	1.9	%	$	254,190	1,759	—	81.4	%
Eucutta	6,853	—	6,853	1.6	%	161,070		2,137	—	83.6	%
Mallalieu	5,083	—	5,083	1.2	%	178,238		1,799	—	78.1	%
Other mature properties (3)	19,813	—	19,813	4.5	%	425,246		6,122	—	71.7	%
Total mature properties	40,122	—	40,122	9.2	%	1,018,744		11,817	—	75.9	%
Delhi (4)	27,573	—	27,573	6.3	%	546,648		4,340	—	74.0	%
Hastings	41,687	—	41,687	9.5	%	1,039,419		4,777	—	79.9	%
Heidelberg	33,170	—	33,170	7.5	%	904,021		5,707	—	80.8	%
Oyster Bayou	13,413	—	13,413	3.1	%	508,243		4,683	—	87.0	%
Tinsley	22,648	—	22,648	5.2	%	829,163		8,507	—	81.4	%
Total Gulf Coast region	178,613	—	178,613	40.8	%	4,846,238		39,831	—	79.1	%
Rocky Mountain region
Bell Creek	36,505	—	36,505	8.3	%	721,717		1,248	—	83.6	%
Total Rocky Mountain region	36,505	—	36,505	8.3	%	721,717		1,248	—	83.6	%
Total tertiary properties	215,118	—	215,118	49.1	%	5,567,955		41,079	—	79.3	%
Non-tertiary oil and gas properties
Gulf Coast region
Mississippi	2,932	35,376	8,828	2.0	%	112,754		1,093	7,350	30.9	%
Texas	24,462	18,632	27,567	6.3	%	625,952		5,384	5,436	80.7	%
Other	6,033	3,301	6,583	1.6	%	99,359		976	514	29.1	%
Total Gulf Coast region	33,427	57,309	42,978	9.9	%	838,065		7,453	13,300	53.6	%
Rocky Mountain region
Cedar Creek Anticline (5)	103,886	15,839	106,526	24.3	%	2,099,653		18,488	2,073	81.0	%
Riley Ridge	—	367,516	61,253	14.0	%	27,606		—	968	79.7	%
Other	9,904	11,738	11,860	2.7	%	214,790		3,586	6,614	38.8	%
Total Rocky Mountain region	113,790	395,093	179,639	41.0	%	2,342,049		22,074	9,655	68.9	%
Total non-tertiary properties	147,217	452,402	222,617	50.9	%	3,180,114		29,527	22,955	63.9	%
Company Total	362,335	452,402	437,735	100.0	%	$	8,748,069	70,606	22,955	72.1	%

(1) The above reserve estimates were prepared in accordance with Financial Accounting Standards Board Codification ("FASC") Topic 932, Extractive Industries – Oil and Gas, using the arithmetic average of the first-day-of-the-month NYMEX commodity price for each month during 2014, which were $94.99 per Bbl for crude oil and $4.30 per MMBtu for natural gas, both of which were adjusted for market differentials by field. This prescribed methodology does not reflect significant crude oil price declines in late 2014 and early 2015, when oil prices dropped rapidly, declining to below $45 per Bbl in January 2015. Sustained prices at these recent levels would result in a significant decrease in our PV-10 Value, and to a lesser degree, a reduction in our proved reserve volumes.

(2) PV-10 Value is a non-GAAP measure and is different from the GAAP measure, the Standardized Measure of Discounted Future Net Cash Flows ("Standardized Measure"), in that PV-10 Value is a pre-tax number and the Standardized Measure is an after-tax number.  The Standardized Measure was $5.9 billion at December 31, 2014.  A comparison of PV-10 Value to the Standardized Measure is included in the reserves table in Estimated Net Quantities of Proved Oil and Natural Gas Reserves and Present Value of Estimated Future Net Revenues below. The information used to calculate PV-10 Value is derived directly

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Denbury Resources Inc.

from data determined in accordance with FASC Topic 932.  See the definition of PV-10 Value in the Glossary and Selected Abbreviations.

(3) Other mature properties include Cranfield, Little Creek, Martinville, McComb and Soso fields in Mississippi and Lockhart Crossing Field in Louisiana.

(4) The foregoing Delhi Field reserve quantities, values and average daily production reflect the reversionary assignment of approximately 25% of our interest in that field effective November 1, 2014. The effectiveness, timing, and scope of the reversionary assignment are subject to ongoing litigation, the ultimate outcome of which cannot be predicted.

(5) The Cedar Creek Anticline consists of a series of 14 different operating areas.

Enhanced Oil Recovery Overview. CO₂ used in EOR is one of the most efficient tertiary recovery mechanisms for producing crude oil.  When injected under pressure into underground, oil-bearing rock formations, CO₂ acts somewhat like a solvent as it travels through the reservoir rock, mixing with and modifying the characteristics of the oil so it can be produced and sold.  The terms "tertiary flood," "CO₂ flood" and "CO₂ EOR" are used interchangeably throughout this document.

While enhanced oil recovery projects utilizing CO₂ have been successfully performed by numerous oil and gas companies in a wide range of oil-bearing reservoirs in different oil-producing basins, we believe our investments, experience and acquired knowledge give us a strategic and competitive advantage in the areas in which we operate. We apply what we have learned and developed over the years to improve and increase sweep efficiency within the CO₂ EOR projects we operate.  

We began our CO₂ operations in August 1999, when we acquired Little Creek Field, followed by our acquisition of Jackson Dome CO₂ reserves and the NEJD pipeline in 2001.  Based upon our success at Little Creek and the ownership of the CO₂ reserves, we began to transition our capital spending and acquisition efforts to focus more heavily on CO₂ EOR and, over time, transformed our strategy to focus primarily on owning and operating oil fields that are well suited for CO₂ EOR projects. Prior to tertiary flooding, we strive to maximize the currently sizeable primary and secondary production from our prospective tertiary fields and from fields in which tertiary floods have commenced but still contain significant non-tertiary production.  Our asset base today almost entirely consists of, or otherwise relates to, oil fields that we are currently flooding with CO₂ or plan to flood with CO₂ in the future, or assets that produce CO₂.

Our tertiary operations have grown so that (1) 49% of our proved reserves at December 31, 2014 are proved tertiary oil reserves; (2) 55% of our 2014 production was related to tertiary oil operations (on a BOE basis); and (3) 75% of our 2014 capital expenditures (excluding acquisitions) were related to our tertiary oil operations.  At year-end 2014, the proved oil reserves in our tertiary recovery oil fields had an estimated PV-10 Value of approximately $5.6 billion, or 64% of our total PV-10 Value.  In addition, there are significant probable and possible reserves at several other fields for which tertiary operations are underway or planned.

Although the up-front cost of tertiary production infrastructure and time to construct pipelines and production facilities is greater than in primary oil recovery, we believe tertiary recovery has several favorable, offsetting and unique attributes, including (1) a lower exploration risk, as we are operating oil fields that have significant historical production and reservoir and geological data, (2) an industry-competitive rate of return at relatively low oil prices, depending on the specific field and area, (3) limited competition for this recovery method in our geographic regions, (4) our EOR operations are generally less disruptive to new habitats in comparison to other oil and natural gas development because we further develop existing (as opposed to new) oil fields, and (5) through our oil-producing EOR operations, we concurrently store CO₂ captured from industrial sourcesin the same underground formations that previously trapped and stored oil and natural gas.

2015 Development Plan. In the fourth quarter of 2014, we announced that we were undertaking development plan changes and operational initiatives in light of the late-2014 significant oil price declines and uncertainty around future oil prices. These changes included reducing budgeted 2015 capital spending to a level at which we believe we can maintain production relatively flat with average 2014 levels, while slowing the development pace of certain fields. During this period of reduced capital spending, the recently-created innovation and improvement teams are evaluating each of our assets with a goal of increasing the value of both existing assets and future projects by optimizing field operational and development plans, increasing CO₂ flood recovery efficiency and reducing costs. These initiatives aim to increase the profitability of our assets, making them more resilient to lower

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oil prices. We will continue to evaluate the timing of development of our inventory of fields and related pipelines and facilities, which will be largely dependent upon commodity prices and CO₂ availability. Therefore, planned development activities presented in the discussions that follow may be delayed or modified depending primarily upon oil prices and our level of cash flow to fund such development, as well as the availability of CO₂.

Tertiary Oil Properties

Gulf Coast Region

CO₂Sources and Pipelines

Jackson Dome.Our primary Gulf Coast CO₂ source, Jackson Dome, located near Jackson, Mississippi, was discovered during the 1970s by oil and gas companies that were exploring for hydrocarbons.  This large and relatively pure source of naturally occurring CO₂ (98% CO₂) is, to our knowledge, the only significant underground deposit of CO₂ in the United States east of the Mississippi River. Together with the related CO₂ pipeline infrastructure, Jackson Dome provides us a significant strategic advantage in the acquisition of properties in Mississippi, Louisiana and southeastern Texas that are well suited for CO₂ EOR.

We acquired Jackson Dome in February 2001 in a purchase that also gave us ownership and control of the NEJD CO₂ pipeline and provided us with a reliable supply of CO₂ at a reasonable and predictable cost for our Gulf Coast CO₂ tertiary recovery operations.  Since February 2001, we have acquired and drilled numerous CO₂-producing wells, significantly increasing our estimated proved Gulf Coast CO₂ reserves from approximately 800 Bcf at the time of acquisition of Jackson Dome to approximately 5.7 Tcf as of December 31, 2014.  The CO₂ reserve estimates are based on a gross working interest of the CO₂ reserves, of which our net revenue interest is approximately 4.5 Tcf, and is included in the evaluation of proved CO₂ reserves prepared by D&M, an independent petroleum engineering consulting firm.  In discussing our available CO₂ reserves, we make reference to the gross amount of proved and probable reserves, as this is the amount that is available both for our own tertiary recovery programs and for industrial users who are customers of Denbury and others, as we are responsible for distributing the entire CO₂ production stream.

In addition to our proved reserves, we estimate that we have 2.1 Tcf of probable CO₂ reserves at Jackson Dome.  While the majority of these probable reserves are located in structures that have been drilled and tested, such reserves are still considered probable reserves because (1) the original well is plugged; (2) they are located in fault blocks that are immediately adjacent to fault blocks with proved reserves; or (3) they are reserves associated with increasing the ultimate recovery factor from our existing reservoirs with proved reserves. In addition, a significant portion of these probable reserves at Jackson Dome are located in undrilled structures where we have sufficient subsurface and seismic data indicating geophysical attributes that, coupled with our historically high drilling success rate, provide a reasonably high degree of certainty that CO₂ is present.

Although our current proved CO₂ reserves are sizeable, in order to continue our tertiary development of oil fields in the Gulf Coast region, incremental deliverability of CO₂ is required.  In order to obtain additional CO₂ deliverability, we have conducted several 3D seismic surveys in the Jackson Dome area over the past several years and anticipate drilling one development well in 2015 that is intended to increase the area's productive capacity.

In addition to our drilling at Jackson Dome, we continue to expand our processing and dehydration capacities, and we continue to install pipelines and/or pumping stations necessary to transport the CO₂ through our controlled pipeline network. We expect our current proved reserves of CO₂, coupled with a risked drilling program at Jackson Dome and CO₂ expected to be captured from industrial sources, to provide sufficient quantities of CO₂ for us to develop our proved and probable EOR reserves in the Gulf Coast region. In the future, we believe that once a CO₂ flood in a field reaches its productive economic limit, we could recycle a portion of the CO₂ that remains in that field's reservoir and utilize it for oil production in another field's tertiary flood.

In the Gulf Coast region, approximately 91% of our average daily CO₂ produced from Jackson Dome or captured from industrial sources in 2014, 2013 and 2012 was used in our tertiary recovery operations, with the balance delivered to third-party industrial users. During 2014, we used an average of 835 MMcf/d of CO₂ (including CO₂ captured from industrial sources) for our tertiary activities.

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Gulf Coast CO₂Captured from IndustrialSources.  In addition to our natural source of CO₂, we are currently party to three long-term contracts to purchase CO₂ from industrial plants.  We currently purchase CO₂ from an industrial facility in Port Arthur, Texas and from an industrial facility in Geismar, Louisiana, and we anticipate taking deliveries in 2016 from Mississippi Power's Kemper County Energy Facility. We estimate these sources will supply, in the aggregate, approximately 185 MMcf/d of CO₂ to our EOR operations, although under certain circumstances they could provide higher or lower volumes.  Additionally, we are in ongoing discussions with other parties who have plans to construct plants near the Green Pipeline.

In addition to the potential CO₂ sources discussed above, we continue to have ongoing discussions with owners of existing plants of various types that emit CO₂ that we may be able to purchase and/or transport. In order to capture such volumes, we (or the plant owner) would need to install additional equipment, which includes, at a minimum, compression and dehydration facilities.  Most of these existing plants emit relatively small volumes of CO₂, generally less than our contracted sources, but such volumes may still be attractive if the source is located near CO₂ pipelines.  The capture of CO₂ could also be influenced by potential federal legislation, which could impose economic penalties for atmospheric CO₂ emissions.  We believe that we are a likely purchaser of CO₂ captured in our areas of operation because of the scale of our tertiary operations and our CO₂ pipeline infrastructure.

Gulf Coast CO₂Pipelines. We acquired the 183-mile NEJD CO₂ pipeline that runs from Jackson Dome to near Donaldsonville, Louisiana, as part of the 2001 acquisition of our Jackson Dome CO₂ source.  Since 2001, we have acquired or constructed nearly 755 miles of CO₂ pipelines, and as of December 31, 2014, we have access to over 950 miles of CO₂ pipelines, which gives us the ability to deliver CO₂ throughout the Gulf Coast region.  In addition to the NEJD CO₂ pipeline, the major pipelines in the Gulf Coast region are the Free State Pipeline (90 miles), the Delta Pipeline (110 miles), the Green Pipeline Texas (120 miles), and the Green Pipeline Louisiana (200 miles).

Completion of the Green Pipeline allowed for the first CO₂ injection into Hastings Field, located near Houston, Texas, in 2010, and gives us the ability to deliver CO₂ to oil fields all along the Gulf Coast from Baton Rouge, Louisiana, to Alvin, Texas.  At the present time, most of the CO₂ flowing in the Green Pipeline is delivered from the Jackson Dome area, but we began receiving CO₂ from an industrial facility in Port Arthur, Texas in 2012, and are currently transporting a third party's CO₂ for a fee to the sales point at Hastings Field.  In addition, we began receiving CO₂ from an industrial facility in Geismar, Louisiana in 2013. We expect the volume of CO₂ transported through the Green Pipeline to increase in future years as we develop our inventory of CO₂ EOR projects in this area.

Tertiary Properties with Tertiary Production and Proved Tertiary Reserves at December 31, 2014

Mature properties. Mature properties include our longest-producing properties which are generally located along our NEJD CO₂ pipeline in southwest Mississippi and Louisiana and our Free State Pipeline in east Mississippi.  This group of properties includes our initial CO₂ field, Little Creek, as well as several other fields (Brookhaven, Cranfield, Eucutta, Lockhart Crossing, Mallalieu, Martinville, McComb and Soso fields).  These fields accounted for 29% of our total 2014 CO₂ EOR production and approximately 19% of our year-end proved tertiary reserves.  These fields have been producing for some time, and their production is generally declining. Many of these fields contain multiple reservoirs that are amenable to CO₂ EOR. In 2015, we currently plan to invest approximately $20 million to further develop our mature tertiary properties.

From the time we originally acquired these properties through December 31, 2014, we have recovered all of our tertiary investment relating to our mature properties, and the excess net cash flow (revenue less operating expenses and capital expenditures, including the acquisition costs) from these mature properties through that date was $2.1 billion.  As of December 31, 2014, the estimated PV-10 Value of our mature properties was $1.0 billion.

Delhi Field. Delhi Field is located east of Monroe, Louisiana.  In May 2006, we purchased our initial interest in Delhi for $50 million, plus an approximate 25% reversionary interest to the seller after we receive $200 million in "total net cash flow," as defined in the applicable agreements between the parties.  We began well and facility development in 2008 and began delivering CO₂ to the field in the fourth quarter of 2009 via the Delta Pipeline, which runs from Tinsley Field to Delhi Field.

First tertiary production occurred at Delhi Field in the first quarter of 2010.  Production from Delhi Field in the fourth quarter of 2014 averaged 3,743 Bbls/d, down from 4,793 Bbls/d in the fourth quarter of 2013.  The primary reason for this comparative fourth quarter decline is the November 1, 2014, reversionary assignment to the seller of the field of approximately 25% of our

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interest in Delhi Field. The effectiveness, timing, and scope of the reversionary assignment are subject to ongoing litigation, the ultimate outcome of which cannot be predicted.

Additionally, our development of Delhi Field has been impacted by a release of well fluids within an area of Delhi Field occurring in the second quarter of 2013 and our subsequent remediation of such release. During the years ended December 31, 2014 and 2013, we recorded $16.8 million and $114.0 million, respectively, of lease operating expenses related to this release and its remediation in our Consolidated Statements of Operations, bringing our total cost estimate to date with respect to these expenses to $130.8 million. We received a $25.0 million cost reimbursement ($23.9 million net to Denbury) in October 2014 related to the Delhi Field release and remediation from our insurance carrier providing the first layer of our excess insurance coverage, which was recognized as a reduction to lease operating expenses for the year ended December 31, 2014. See Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations– Capital Resourcesand Liquidity – Insurance Recoveries to Cover Costs of 2013 Delhi Field Release and Note 11, Commitments and Contingencies to the Consolidated Financial Statements for further discussion of these matters. We currently plan to invest approximately $30 million to $50 million in this field during 2015, primarily related to a natural gas liquids extraction plant, which we anticipate will be placed into service in the second half of 2016. This plant will provide us with the ability to sell natural gas liquids from the produced stream, improve the efficiency of the flood, and utilize extracted methane to power the plant and reduce field operating expenses.

From inception through December 31, 2014, we had not yet recovered our tertiary investment in this field, and the remaining investment to be recovered (revenue less operating expenses and capital expenditures, including acquisition costs) from Delhi Field was $12 million. As of December 31, 2014, the estimated PV-10 Value of Delhi Field was $546.6 million.

Hastings Field.  Hastings Field is located south of Houston, Texas.  We acquired a majority interest in this field in February 2009 for $247 million.  We initiated CO₂ injection in the West Hastings Unit during the fourth quarter of 2010 upon completion of the construction of the Green Pipeline.  Due to the large vertical oil column that exists in the field, we are developing the Frio reservoir using dedicated CO₂ injection and producing wells for each of the major sand intervals. We began producing oil from our EOR operations at Hastings Field in the first quarter of 2012, and we booked initial proved tertiary reserves for the West Hastings Unit in 2012.  In 2015, we will begin employing a new series flood approach to certain portions of this field. The series flood includes CO₂ flooding one zone at a time and moving up the reservoir, which we believe will enhance the overall efficiency of the flood, and may also be applied in the future to other fields with appropriate reservoir characteristics. During the fourth quarter of 2014, tertiary production from Hastings Field averaged 4,811 Bbls/d, compared to 4,270 Bbls/d in the fourth quarter of 2013. We currently plan to invest approximately $25 million in 2015 to continue to expand our development and implement the series flood at Hastings Field.

From inception through December 31, 2014, we had not yet recovered our tertiary investment in this field, and the remaining investment to be recovered (revenue less operating expenses and capital expenditures, including the acquisition cost) from Hastings Field was $333 million.  As of December 31, 2014, the estimated PV-10 Value of Hastings Field was $1.0 billion.

Heidelberg Field.  Heidelberg Field is located in Mississippi and consists of an East Unit and a West Unit.  Construction of the CO₂ facility, connecting pipeline and well work commenced on the West Heidelberg Unit during 2008, with our first CO₂ injections into the Eutaw zone in the fourth quarter of 2008.  Our first tertiary oil production occurred in the second quarter of 2009, and we began flooding the Christmas and Tuscaloosa zones in 2013 and 2014, respectively.  During the fourth quarter of 2014, tertiary production at Heidelberg Field averaged 6,164 Bbls/d, compared to 5,206 Bbls/d in the fourth quarter of 2013.  In 2015, we currently plan to invest approximately $45 million to continue developing the East and West Heidelberg Units, including an expansion of our Tuscaloosa development and Christmas zone and adjustments to our CO₂ floods of existing zones to better direct the CO₂ through the zones and optimize oil recovery from the field.

From inception through December 31, 2014, we have recovered all of our tertiary investment relating to the CO₂ flood at Heidelberg Field, and the excess net cash flow (revenue less operating expenses and capital expenditures, including the acquisition costs) from the field was $14 million.  As of December 31, 2014, the estimated PV-10 Value of Heidelberg Field was $904.0 million.

Oyster Bayou Field.  We acquired a majority interest in Oyster Bayou Field in 2007. The field is located in southeast Texas, east of Galveston Bay, and is somewhat unique when compared to our other CO₂ EOR projects because the field covers a relatively small area of 3,912 acres.  We began CO₂ injections into Oyster Bayou Field in the second quarter of 2010, commenced tertiary

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production in the fourth quarter of 2011 from the Frio A-1 zone, and booked initial proved tertiary reserves for the field in 2012.  In 2014, we completed development of the Frio A-2 zone and currently expect peak production from the field to occur in 2015. During the fourth quarter of 2014, tertiary production at Oyster Bayou Field averaged 5,638 Bbls/d, compared to 3,869 Bbls/d in the fourth quarter of 2013. In 2015, we currently plan to invest approximately $10 million to complete minor facility and conformance work.

From inception through December 31, 2014, we had not yet recovered our tertiary investment in this field, and the remaining investment to be recovered (revenue less operating expenses and capital expenditures, including the acquisition costs) from Oyster Bayou Field was $29 million.  As of December 31, 2014, the estimated PV-10 Value of Oyster Bayou Field was $508.2 million.

Tinsley Field.  We acquired Tinsley Field in 2006. This Mississippi field was discovered and first developed in the 1930s and is separated by different fault blocks.  As is the case with the majority of fields in Mississippi, Tinsley Field produces from multiple reservoirs.  Our CO₂ enhanced oil recovery operations at Tinsley Field have thus far targeted the Woodruff formation, although there is additional potential in the Perry sandstone and other smaller reservoirs.  We commenced tertiary oil production from Tinsley Field in the second quarter of 2008, substantially completed development of the Woodruff formation by the end of 2014, and currently expect production to peak and begin declining in 2015.  During the fourth quarter of 2014, the average tertiary oil production was 8,767 Bbls/d, compared to 7,809 Bbls/d in the fourth quarter of 2013. In 2015, we currently plan to invest approximately $10 million to minimize production declines at the field. 

From inception through December 31, 2014, we have recovered all of our tertiary investment relating to the CO₂ flood at this field, and our tertiary operations at Tinsley Field have generated excess net cash flow (revenue less operating expenses and capital expenditures, including the acquisition costs) of $502 million.  As of December 31, 2014, the estimated PV-10 Value of Tinsley Field was $829.2 million.

Future Tertiary Properties with No Tertiary Production or Proved Tertiary Reserves at December 31, 2014

Webster Field. We acquired our interest in Webster Field in the fourth quarter of 2012 as part of the sale and exchange transaction with ExxonMobil under which we sold to ExxonMobil our Bakken area assets in North Dakota and Montana in exchange for (1) $1.3 billion in cash, (2) operating interests in Hartzog Draw and Webster fields in Wyoming and Texas, respectively, and (3) an overriding royalty interest equivalent to an approximate one-third ownership interest in ExxonMobil's CO₂ reserves in LaBarge Field in Wyoming (the "Bakken Exchange Transaction"). The field is located in Texas, approximately eight miles northeast of our Hastings Field which we are currently flooding with CO₂. At December 31, 2014, Webster Field had estimated proved non-tertiary reserves of approximately 3.0 MMBOE, net to our interest.  During the fourth quarter of 2014, non-tertiary production at Webster Field averaged 1,121 BOE/d, compared to 1,036 BOE/d in the fourth quarter of 2013.  Webster Field is geologically similar to our Hastings Field, producing oil from the Frio zone at similar depths; as a result, we believe it is well suited for CO₂ EOR. In 2014, we completed a nine-mile lateral between the Green Pipeline and Webster Field, which will eventually deliver CO₂ to the field. In 2015, we currently plan to invest approximately $55 million on well work and field facilities, as well as on initial construction of a CO₂ recycle facility for the East Fault Block. We currently expect to commence CO₂ injections at Webster Field in 2016, with first tertiary production expected in 2017, the timing of which could be delayed depending on future oil prices.

Conroe Field.  Conroe Field, our largest potential tertiary flood in the Gulf Coast region, is located north of Houston, Texas.  We acquired a majority interest in this field in 2009 for $271 million in cash and 11.6 million shares of Denbury common stock, for a total aggregate value of $439 million.  Conroe Field had estimated proved non-tertiary reserves of approximately 12.3 MMBOE at December 31, 2014, net to our interest, all of which are proved developed.  During the fourth quarter of 2014, production at Conroe Field averaged 3,386 BOE/d, compared to 2,697 BOE/d in the fourth quarter of 2013, with the production increase due primarily to performing recompletions and upgrades in 2014.

Given the size of the Conroe Field (approximately 20,000 acres), the volume of CO₂ that could be injected is quite sizable and much larger than any field we have developed to date.  Therefore, the pace of development will be dictated in part by the amount of available CO₂.

A pipeline must be constructed so that CO₂ can be delivered to Conroe Field.  This pipeline, which is planned as an extension of our Green Pipeline, is preliminarily estimated to cover approximately 90 miles at a cost of approximately $220 million. We

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currently expect that over the next five years we will begin construction of this pipeline and prepare to commence CO₂ injections at Conroe Field, the timing of which may change depending on future oil prices.

Thompson Field. We acquired our interest in Thompson Field in June 2012 for $366 million. The field is located in Texas, approximately 18 miles west of our Hastings Field. Thompson Field had estimated proved non-tertiary reserves of approximately 10.2 MMBOE at December 31, 2014, net to our interest, of which approximately 77% is proved developed.  During the fourth quarter of 2014, non-tertiary production at Thompson Field averaged 1,556 BOE/d net to our interest, compared to 1,331 BOE/d in the fourth quarter of 2013.  Thompson Field is geologically similar to Hastings Field, producing oil from the Frio zone at similar depths, and we therefore believe it has CO₂ EOR potential. Under the terms of the Thompson Field acquisition agreement, after the initiation of CO₂ injection, the seller will retain approximately a 5% gross revenue interest (less severance taxes) once average monthly oil production exceeds 3,000 Bbls/d. The timing of CO₂ injections at Thompson Field is currently scheduled more than five years in the future, the ultimate timing of which is primarily dependent upon future oil prices.

Rocky Mountain Region

CO₂Sources and Pipelines

LaBarge Field.  We acquired an overriding royalty interest equivalent to an approximate one-third ownership interest in ExxonMobil's CO₂ reserves in LaBarge Field in the fourth quarter of 2012 as part of the Bakken Exchange Transaction. Our interest at Riley Ridge (discussed below) is also produced from the LaBarge Field. LaBarge Field is located in southwestern Wyoming.

During 2014, we received an average of approximately 40 MMcf/d of CO₂ from ExxonMobil's Shute Creek gas processing plant at LaBarge Field. Based on current capacity, and subject to availability of CO₂, we currently expect to ultimately receive up to 115 MMcf/d of CO₂ by 2021 from such plant. We pay ExxonMobil a fee to process and deliver the CO₂, which we use in our Rocky Mountain region CO₂ floods. As of December 31, 2014, our interest in LaBarge Field consisted of approximately 1.2 Tcf of proved CO₂ reserves.

Riley Ridge. The Riley Ridge Federal Unit is also located in southwestern Wyoming and produces gas from the same LaBarge Field. In a series of two acquisitions in 2010 and 2011, we acquired 100% of the operating interests in Riley Ridge, as well as a gas processing facility that was under construction at the time of purchase, for $347 million. The gas processing facility separates helium and natural gas from the gas stream. During construction of the gas processing facility, we encountered issues related to contractor performance and design failure that resulted in significant delays and incremental costs to complete the facility. We placed the gas processing facility into service during the fourth quarter of 2013 and were successful in running the facility for part of 2014, but encountered additional issues in 2014, which kept the facility from running at optimum levels, as well as additional problems associated with sulfur build-up in the gas supply wells. We are currently working to correct and remedy these issues; however, we currently expect natural gas production at Riley Ridge will remain shut-in due to such issues until 2016.

As of December 31, 2014, our interest in Riley Ridge and minor surrounding acreage contained net proved reserves of 368 Bcf (61 MMBOE) of natural gas and 1.8 Tcf of CO₂ reserves.  The gas composition is approximately 65% CO₂, approximately 16% to 18% methane, less than one percent helium, and the remainder various other gases. The CO₂ reserve estimates are based on the gross working interest of the CO₂ reserves, in which our net revenue interest is approximately 1.4 Tcf.  The helium reserves at Riley Ridge are owned primarily by the U.S. government; however, we have the right to produce and sell the helium reserves to a third party on behalf of the government. In exchange for this right, we pay the U.S. government a fee that fluctuates based upon realized sales proceeds.  Our helium extraction agreement with the U.S. government has a minimum term extending 20 years from first production and continuing thereafter until either party terminates the contract. Reserve volumes presented herein assume that the term of this helium extraction agreement continues beyond 20 years, given the benefit to both parties to the agreement. As of December 31, 2014, we estimate that Riley Ridge contains proved helium reserves of 13.2 Bcf, which volume estimate is reduced to reflect the related fee we will remit to the U.S. government.  In addition, we believe there is significant CO₂ reserve potential in other acreage surrounding Riley Ridge in which we also own an interest.

Initially, the gas processing facility at Riley Ridge was designed to separate for sale the natural gas and helium from the full well stream, with the remaining gases, principally CO₂, re-injected into the producing formation or a deeper formation. Ultimately, our primary purpose for acquiring Riley Ridge was to gain a source of CO₂ to utilize in flooding our fields in the Rocky Mountain

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region. We intend to construct a CO₂ capture facility and will start to use CO₂ from Riley Ridge following completion of the capture facility and planned CO₂ pipeline connecting Riley Ridge to our existing Greencore Pipeline, the timing of which is largely dependent upon future oil prices and prioritization of development activities.

Other Rocky Mountain CO₂Sources.  We began purchasing and receiving CO₂ from the ConocoPhillips-operated Lost Cabin gas plant in central Wyoming in the first quarter of 2013, under a contract that provides us as much as 50 MMcf/d of CO₂ for use in our Rocky Mountain region CO₂ floods. Our volumes received from the plant averaged approximately 29 MMcf/d in 2014.

Greencore Pipeline.  The 20-inch Greencore Pipeline in Wyoming is the first CO₂ pipeline we have constructed in the Rocky Mountain region.  We plan to use the pipeline as our trunk line in the Rocky Mountain region, eventually connecting our various Rocky Mountain region CO₂ sources (see Rocky Mountain Region CO₂Sources and Pipelines above) to the Cedar Creek Anticline in eastern Montana and western North Dakota. The initial 232-mile section of the Greencore Pipeline begins at the ConocoPhillips-operated Lost Cabin gas plant in Wyoming and terminates at Bell Creek Field in Montana.  We completed construction of this section of the pipeline in the fourth quarter of 2012 and received our first CO₂ deliveries from the ConocoPhillips-operated Lost Cabin gas plant during the first quarter of 2013.  During the first quarter of 2014, we completed construction of an interconnect between our Greencore Pipeline and an existing third-party CO₂ pipeline in Wyoming, which enables us to transport CO₂ from LaBarge Field to our Bell Creek Field.

Tertiary Properties with Tertiary Production and Proved Tertiary Reserves at December 31, 2014

Bell Creek Field.  Bell Creek Field is located in southeast Montana, and we acquired our interest in this field as part of the Encore merger in 2010.  The oil-producing reservoir in Bell Creek Field is a sandstone reservoir with characteristics similar to those we have successfully flooded with CO₂ in the Gulf Coast region. We began first CO₂ injections into Bell Creek Field during the second quarter of 2013, recorded our first tertiary oil production in the third quarter of 2013, and booked initial proved tertiary reserves in the fourth quarter of 2013. Tertiary production, net to our interest, during the fourth quarter of 2014 averaged 1,659 Bbls/d of oil, compared to 177 Bbls/d in the fourth quarter of 2013, as production has steadily grown from the initial production response in the third quarter of 2013.  We expect production from this field will continue to increase for several years. In 2015, we plan to invest approximately $55 million to expand our CO₂ flood at Bell Creek Field.

From inception through December 31, 2014, we had not yet recovered our tertiary investment in this field, and the remaining investment to be recovered (revenue less operating expenses and capital expenditures, including the acquisition costs) from Bell Creek Field was $490 million. As of December 31, 2014, the estimated PV-10 Value of Bell Creek Field was $721.7 million.

Future Tertiary Properties with No Tertiary Production or Proved Tertiary Reserves at December 31, 2014

Cedar Creek Anticline.  CCA is the largest potential EOR property that we own and currently our largest producing property, contributing approximately 25% of our 2014 total production. The field is primarily located in Montana but covers such a large area (approximately 126 miles) that it also extends into North Dakota.  CCA is a series of 14 different operating areas, each of which could be considered a field by itself.  We acquired our initial interest in CCA as part of the Encore merger in 2010 and acquired additional interests (the "CCA Acquisition") from a wholly-owned subsidiary of ConocoPhillips in the first quarter of 2013, adding 42.2 MMBOE of incremental proved reserves at that date. See Note 2, Acquisition, to the Consolidated Financial Statements for further discussion of this transaction. Production from CCA, net to our interest, averaged 18,553 BOE/d during the fourth quarter of 2014, compared to production during the fourth quarter of 2013 of 18,601 BOE/d. The non-tertiary proved reserves associated with CCA were 103.9 MMBbls of oil and 15.8 Bcf of gas as of December 31, 2014.

CCA is located approximately 110 miles north of Bell Creek Field, and we currently expect to ultimately connect this field to our Greencore Pipeline.  In 2015, we plan to invest approximately $50 million to improve waterfloods, drill infill development wells, and complete an environmental impact study for CO₂ development permitting. Our current plan for initiating a CO₂ flood at CCA is scheduled more than five years from now, the timing of which may change depending on future oil prices.

Hartzog Draw Field. We acquired our interest in Hartzog Draw Field in the fourth quarter of 2012 as part of the Bakken Exchange Transaction. The field is located in the Powder River Basin of northeastern Wyoming, approximately 12 miles from our Greencore Pipeline. Hartzog Draw Field had estimated proved reserves of approximately 5.0 MMBOE at December 31, 2014,

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net to our interest, 1.5 MMBOE of which relate to the natural gas producing Big George coal zone.  During the fourth quarter of 2014, non-tertiary production averaged 2,639 BOE/d, compared to 2,204 BOE/d in the fourth quarter of 2013. We successfully completed 5 wells in Hartzog Draw Field in 2014; however, we have temporarily suspended the non-tertiary development of Hartzog Draw Field in light of the recent oil price environment. We will continue to evaluate future development opportunities and plan to continue development of the Shannon formation if prices return to higher levels that provide an acceptable rate of return. We believe the oil reservoir characteristics of Hartzog Draw Field make it well suited for CO₂ EOR in the future. We must obtain regulatory approval and construct a CO₂ pipeline from our existing Greencore Pipeline to Hartzog Draw Field before we can commence our planned CO₂ EOR project. We currently plan to commence CO₂ injections at Hartzog Draw more than five years from now, the timing of which is dependent on future oil prices.

Other Non-Tertiary Oil Properties

Despite the majority of our oil and natural gas properties discussed above consisting of either existing or planned future tertiary floods, we do also produce oil and natural gas either from fields in both our Gulf Coast and Rocky Mountain regions that are not amenable to EOR or from specific reservoirs (within an existing tertiary field) that are not amenable to EOR. For example, at Heidelberg Field, we produce natural gas from the Selma Chalk reservoir, which is separate from the Christmas and Eutaw reservoirs currently being flooded with CO₂. Production from these other non-tertiary properties totaled 5,747 BOE/d during the fourth quarter of 2014, compared to 6,994 BOE/d during the fourth quarter of 2013.

OIL AND GAS ACREAGE, PRODUCTIVE WELLS AND DRILLING ACTIVITY

In the data below, "gross" represents the total acres or wells in which we own a working interest and "net" represents the gross acres or wells multiplied by our working interest percentage.  For the wells that produce both oil and gas, the well is typically classified as an oil or natural gas well based on the ratio of oil to natural gas production.

Oil and Gas Acreage

The following table sets forth our acreage position at December 31, 2014:

	Developed		Undeveloped		Total
	Gross	Net	Gross	Net	Gross	Net
Gulf Coast region	232,129	200,851	298,234	20,538	530,363	221,389
Rocky Mountain region	359,038	316,620	232,135	110,641	591,173	427,261
Total	591,167	517,471	530,369	131,179	1,121,536	648,650

The percentage of our net undeveloped acreage that is subject to expiration over the next three years, if not renewed, is approximately 5% in 2015, 7% in 2016 and 10% in 2017.

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Productive Wells

The following table sets forth our gross and net productive oil and natural gas wells as of December 31, 2014:

	Producing Oil Wells		Producing Natural Gas Wells		Total
	Gross	Net	Gross	Net	Gross	Net
Operated wells
Gulf Coast region	1,322	1,226.3	212	195.2	1,534	1,421.5
Rocky Mountain region	1,164	1,063.9	208	119.1	1,372	1,183.0
Total	2,486	2,290.2	420	314.3	2,906	2,604.5
Non-operated wells
Gulf Coast region	26	1.5	4	0.1	30	1.6
Rocky Mountain region	101	15.2	83	28.4	184	43.6
Total	127	16.7	87	28.5	214	45.2
Total wells
Gulf Coast region	1,348	1,227.8	216	195.3	1,564	1,423.1
Rocky Mountain region	1,265	1,079.1	291	147.5	1,556	1,226.6
Total	2,613	2,306.9	507	342.8	3,120	2,649.7

Drilling Activity

The following table sets forth the results of our drilling activities over the last three years.  As of December 31, 2014, we had 13 gross (12.6 net) wells in progress.

	Year Ended December 31,
	2014		2013		2012
	Gross	Net	Gross	Net	Gross	Net
Exploratory wells (1)
Productive (2)	—	—	—	—	1	—
Non-productive (3)	—	—	—	—	—	—
Development wells (1)
Productive (2)	59	55.9	49	44.3	201	87.4
Non-productive (3)(4)	—	—	1	1.0	5	3.2
Total	59	55.9	50	45.3	207	90.6

(1) An exploratory well is a well drilled to find a new field or to find a new reservoir in a field previously found to be productive of oil or natural gas in another reservoir.  Generally, an exploratory well is any well that is not a development well, an extension well, a service well or a stratigraphic test well.  A development well is a well drilled within the proved area of an oil or gas reservoir to the depth of a stratigraphic horizon known to be productive.

(2) A productive well is an exploratory or development well found to be capable of producing either oil or natural gas in sufficient quantities to justify completion as an oil or natural gas well.

(3) A non-productive well is an exploratory or development well that is not a productive well.

(4) During 2014, 2013 and 2012, an additional 43, 43 and 56 wells, respectively, were drilled for water or CO₂ injection purposes.

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The following table summarizes sales volumes, sales prices and production cost information for our net oil and natural gas production for the years ended December 31, 2014, 2013 and 2012:

	Year Ended December 31,
	2014		2013		2012
Net sales volume
Gulf Coast region
Oil (MBbls)	17,259		16,858		15,621
Natural gas (MMcf)	4,855		5,620		5,907
Total Gulf Coast region (MBOE)	18,068		17,795		16,606
Rocky Mountain region
Oil (MBbls)	8,513		7,336		8,841
Natural gas (MMcf)	3,524		3,046		4,747
Total Rocky Mountain region (MBOE)	9,100		7,844		9,632
Total Company (MBOE)	27,168		25,639		26,238
Average sales prices – excluding impact of derivative settlements
Gulf Coast region
Oil (per Bbl)	$	94.67	$	105.34	$	105.59
Natural gas (per Mcf)	4.31		3.74		2.79
Rocky Mountain region
Oil (per Bbl)	$	82.75	$	89.95	$	82.33
Natural gas (per Mcf)	3.73		3.15		3.38
Total Company
Oil (per Bbl)	$	90.74	$	100.67	$	97.18
Natural gas (per Mcf)	4.07		3.53		3.05
Average production cost (per BOE sold) (1)
Gulf Coast region (2)	$	24.92	$	32.34	$	24.96
Rocky Mountain region (3)	21.69		19.78		12.23
Total Company (2)	23.84		28.50		20.29

(1) Excludes oil and natural gas ad valorem and production taxes.

(2) Production costs include a net reduction of $7.1 million of lease operating expenses recorded in 2014 related to Delhi Field remediation costs and insurance reimbursements, compared to $114.0 million of lease operating expenses recorded during 2013. Excluding estimated Delhi Field remediation costs and insurance reimbursements, average production costs per BOE for the Gulf Coast region would have totaled $25.31 and $25.93 for the years ended December 31, 2014 and 2013, respectively, and average production costs per BOE for the Company as a whole would have totaled $24.10 and $24.05 for the years ended December 31, 2014 and 2013, respectively.

(3) Average production cost for the Rocky Mountain region in 2012 included operating costs related to our Bakken area assets, which generally had lower operating costs than our other properties. These assets were sold in connection with the Bakken Exchange Transaction in late 2012.

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PRODUCTION AND UNIT PRICES

Further information regarding average production rates, unit sale prices and unit costs per BOE are set forth under Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations – Results of Operations – Operating Results Table, included herein.

TITLE TO PROPERTIES

As is customary in the oil and natural gas industry, Denbury conducts a limited title examination at the time of its acquisition of properties or leasehold interests targeted for enhanced recovery, and curative work is performed with respect to significant defects on higher-value properties of the greatest significance.  We believe that title to our oil and natural gas properties is good and defensible, subject only to such exceptions that we believe do not materially interfere with the use of such properties, including encumbrances, easements, restrictions and royalty, overriding royalty and other similar interests.

SIGNIFICANT OIL AND GAS PURCHASERS AND PRODUCT MARKETING

Oil and natural gas sales are made on a day-to-day basis or under short-term contracts at the current area market price. We would not expect the loss of any single purchaser to have a material adverse effect upon our operations; however, the loss of a large single purchaser could potentially reduce the competition for our oil and natural gas production, which in turn could negatively impact the prices we receive.  For the year ended December 31, 2014, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (31%), Plains Marketing LP (13%), and ConocoPhillips (12%). For the year ended December 31,2013, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (33%), Plains Marketing LP (15%), and Eighty-Eight Oil LLC (10%). For the year ended December 31,2012, two purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (39%) and Plains Marketing LP (17%).

Our ability to market oil and natural gas depends on many factors beyond our control, including the extent of domestic production and imports of oil and gas, the proximity of our oil and natural gas production to pipelines, the available capacity in such pipelines, the demand for oil and natural gas, the effects of weather, and the effects of state and federal regulation.  Our production in the Gulf Coast region is primarily from developed fields close to major pipelines or refineries and established infrastructure.  Our production in the Rocky Mountain region is dependent on, among other factors, limited transportation options caused by oversubscribed pipelines and market centers that are distant from producing properties.  As of December 31, 2014, we have not experienced significant difficulty in finding a market for all of our production as it becomes available or in transporting our production to those markets; however, there is no assurance that we will always be able to market all of our production or obtain favorable prices.

Oil Marketing

During 2012 and 2013, the oil produced in the Gulf Coast region benefited from strong pricing differentials in relation to NYMEX, and where possible we attached our production to Light Louisiana Sweet ("LLS") pricing. Overall, during 2014, we sold approximately 43% of our crude oil at prices based on the LLS index price, approximately 23% at prices partially tied to the LLS index price, and the balance at prices based on various other indexes tied to NYMEX prices, primarily in the Rocky Mountain region. During 2014, LLS pricing and NYMEX pricing have been much closer together, with the fourth quarter of 2014 quarterly average LLS-to-NYMEX differential (on a trade-month basis) narrowing to a positive $3.16 per Bbl, suggesting a potential return to long-term historical spreads compared to the wider-than-normal positive LLS-to-NYMEX spreads we experienced during 2012 and 2013. During 2014, our light sweet crude oil production in the Gulf Coast region, on average, sold for $1.80 per Bbl over NYMEX compared to $7.44 per Bbl over NYMEX in 2013 and more than $11.50 per Bbl over NYMEX in 2012.  The pricing of other Gulf Coast grades of oil deteriorated somewhat during 2014, with our light and medium sour crude production selling at a discount to NYMEX of $2.43 per Bbl.  The market dynamics of the region suggest that differentials to NYMEX are not expected to return to the more favorable levels seen over the last few years due to current global supply and demand indicators, as well as the influx of light sweet crude and condensate from producing regions outside of the Gulf Coast region by rail and recently completed major pipeline projects.  Our current markets at various sales points along the Gulf Coast have sufficient demand to accommodate our production, but there can be no assurance of future demand. We are, therefore, monitoring the marketplace for opportunities to strategically enter into long-term marketing arrangements.

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Denbury Resources Inc.

The marketing of our Rocky Mountain region oil production is dependent on transportation through local pipelines to market centers in Guernsey, Wyoming; Clearbrook, Minnesota; Wood River, Illinois; and most recently Cushing, Oklahoma.  Shipments on some of the pipelines are oversubscribed and subject to apportionment.  We currently have access to, or have contracted for, sufficient pipeline capacity to move our oil production; however, there can be no assurance that we will be allocated sufficient pipeline capacity to move all of our oil production in the future.  Expansion of pipeline and newly built rail infrastructure in the Rocky Mountain region is ongoing and, we believe, has improved the overall stability of oil differentials in the area. However, because local demand for production is small in comparison to current production levels, much of the production in the Rocky Mountain region is transported to markets outside of the region. Therefore, prices in the Rocky Mountain region are further influenced by fluctuations in prices (primarily Brent and LLS) in coastal markets and by available pipeline capacity in the Midwest and Cushing markets.  For the year ended December 31, 2014, the discount for our oil production in the Rocky Mountain region averaged $10.19 per Bbl, compared to $8.10 per Bbl during 2013 and $11.86 per Bbl during 2012. Excluding the Bakken area assets that we sold during the fourth quarter of 2012, our oil production in the Rocky Mountain region sold at a discount to NYMEX of $8.43 per Bbl during the year ended December 31, 2012.

Natural Gas Marketing

Virtually all of our natural gas production in the Gulf Coast region is close to existing pipelines; consequently, we generally have a variety of options to market our natural gas.  However, our natural gas production in the Rocky Mountain region, like our oil production, is dependent on, among other factors, limited transportation options that can affect our ability to find markets for it.  We sell the majority of our natural gas on one-year contracts, with prices fluctuating month to month based on published pipeline indices and with slight premiums or discounts to the index.  We currently receive near NYMEX or Henry Hub prices for most of our natural gas sales in Mississippi.  For the year ended December 31, 2014, the amount received for our Mississippi natural gas production averaged $0.25 per Mcf over NYMEX prices.  In the Texas Gulf Coast region, due primarily to its location, the price we received for the year ended December 31, 2014, averaged $0.21 per Mcf below NYMEX prices.  The CCA natural gas production in the Rocky Mountain region is sold at the wellhead on a percent-of-proceeds basis.  We receive a percentage of proceeds on both the residue natural gas volumes and the natural gas liquids volumes.  The natural gas has a significant component of propane, butanes and other higher-density hydrocarbons, resulting in a measurable natural gas liquids stream.  In addition, we have coal bed methane production in the Hartzog Draw that is sold at the Cheyenne Hub. For the year ended December 31, 2014, we averaged $0.53 per Mcf below NYMEX prices for our Rocky Mountain region natural gas production due primarily to its location, the natural gas liquids extracted from the CCA gas stream (resulting in a decreased net price), and the quality of the coal bed methane gas in Wyoming.

COMPETITION AND MARKETS

We face competition from other oil and natural gas companies in all aspects of our business, including acquisition of producing properties, oil and gas leases, drilling rights, and CO₂ properties; marketing of oil and natural gas; and obtaining and maintaining goods, services and labor.  Many of our competitors have substantially larger financial and other resources.  Factors that affect our ability to acquire producing properties include available liquidity, available information about prospective properties and our expectations for earning a minimum projected return on our investments.  Because of the primary nature of our core assets (our tertiary operations) and our ownership of relatively uncommon significant natural sources of CO₂ in the Gulf Coast and Rocky Mountain regions, we believe that we are effective in competing in the market and have less competition than our peers in certain aspects of our business.

The demand for qualified and experienced field personnel to drill wells and conduct field operations and for geologists, geophysicists, engineers and other professionals in the oil and gas industry can fluctuate significantly, often in correlation with commodity prices, causing periodic shortages in such personnel.  In recent years, the competition for qualified technical personnel has been extensive, and our personnel costs have been escalating. There have also been periods with shortages of drilling rigs and other equipment, as demand for rigs and equipment has increased along with the number of wells being drilled.  These factors also cause significant increases in costs for equipment, services and personnel.  We cannot be certain when we will experience these issues, and these types of shortages or price increases could significantly decrease our profit margin, cash flow and operating results, and cause significant delays in our development operations.

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Denbury Resources Inc.

FEDERAL AND STATE REGULATIONS

Numerous federal, state and local laws and regulations govern the oil and gas industry.  Additions or changes to these laws and regulations are often made in response to the current political or economic environment. Compliance with the evolving regulatory landscape is often difficult, and substantial penalties may be incurred for noncompliance. Additionally, the future annual cost of complying with all laws and regulations applicable to our operations is uncertain and will be ultimately determined by several factors, including future changes to legal and regulatory requirements. Management believes that continued compliance with existing laws and regulations applicable to our operations and future compliance therewith will not have a materially adverse effect on our consolidated financial position, results of operations or cash flows, although such laws and regulations, and compliance therewith, could cause significant delays or otherwise impede operations, which may, among other things, cause our expected production rates and cash flows to be less than anticipated.

The following sections describe some specific laws and regulations that may affect us.  We cannot predict the cost or impact of these or other future legislative or regulatory initiatives.

Regulation of Natural Gas and Oil Exploration and Production

Our operations are subject to various types of regulation at the federal, state and local levels.  Such regulation includes requiring permits for drilling wells; maintaining bonding requirements in order to drill or operate wells and regulating the location of wells; the method of drilling and casing wells; the surface use and restoration of properties upon which wells are drilled; the plugging and abandoning of wells; and the composition or disposal of chemicals and fluids used in connection with operations.  Our operations are also subject to various conservation laws and regulations.  These include regulation of the size of drilling, spacing or proration units and the density of wells that may be drilled in those units, and the unitization or pooling of oil and gas properties.  In addition, state conservation laws, which establish maximum rates of production from oil and gas wells, generally prohibit or restrict the venting or flaring of natural gas and impose certain requirements regarding the ratability of production.  The effect of these laws and regulations may limit the amount of oil and natural gas we can produce from our wells and may limit the number of wells or the locations at which we can drill.  Regulatory requirements and compliance relative to the oil and gas industry increase our costs of doing business and, consequently, affect our profitability.

Federal Regulation of Sales Prices and Transportation

The transportation of, and certain sales with respect to, natural gas in interstate commerce are heavily regulated by agencies of the U.S. federal government and are affected by, among other things, the availability, terms and cost of transportation.  Notably, the price and terms of access to pipeline transportation are subject to extensive U.S. federal and state regulation.  The Federal Energy Regulatory Commission ("FERC") is continually proposing and implementing new and/or modified rules and regulations affecting the natural gas industry, some of which may adversely affect the availability and reliability of interruptible transportation service on interstate pipelines.  While our sales of crude oil, condensate and natural gas liquids are not currently subject to FERC regulation, our ability to transport and sell such products is dependent on certain pipelines whose rates, terms and conditions of service are subject to FERC regulation.  Additional proposals and proceedings that might affect the natural gas industry are considered from time to time by Congress, FERC, state regulatory bodies and the courts, and we cannot predict when or if any such proposals or proceedings might become effective and their effect or impact, if any, on our operations.

Federal Energy and Climate Change Legislation and Regulation

In early 2012, the President signed the Pipeline Safety, Regulatory Certainty and Job Creation Act of 2011. This act, among other things, updates federal pipeline safety standards, increases penalties for violations of such standards, gives the Department of Transportation's Pipeline and Hazardous Materials Safety Administration (the "PHMSA") authority for new damage prevention and incident notification, and directs the PHMSA to prescribe new minimum safety standards for CO₂ pipelines, which safety standards could affect our operations and the costs thereof. While the PHMSA has adopted or proposed to adopt a number of new regulations to implement this act, no new minimum safety standards have been proposed or adopted for CO₂ pipelines.  In the future, Congress may create new incentives for alternative energy sources and may also consider legislation to reduce emissions of CO₂ or other greenhouse gases. This legislation, if enacted, could (1) impose a tax or other economic penalty on the production of fossil fuels that, when used, ultimately release CO₂, (2) reduce the demand for, and uses of, oil, gas and other minerals, and/or (3) increase the costs incurred by us in our exploration and production activities.  The Environmental Protection Agency ("EPA")

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has promulgated regulations requiring permitting for certain sources of greenhouse gas emissions, and has announced its intention to assess methane and other greenhouse gas emissions from the oil and gas sector and to adopt amended regulations if further reductions are warranted.  At the same time, legislation or regulation to reduce the emissions of CO₂ or other greenhouse gases could also create economic incentives for technologies and practices that reduce or avoid such emissions, including processes that recognize the associated storage of CO₂ in oil and gas reservoirs through CO₂ EOR operations.

Natural Gas Gathering Regulations

State regulation of natural gas gathering facilities generally includes various safety, environmental and, in some circumstances, nondiscriminatory-take requirements.  With the increase in construction and operation of natural gas gathering lines in various states, natural gas gathering is receiving greater regulatory scrutiny from state regulatory agencies, which is likely to continue in the future.

Federal, State or Indian Leases

Our operations on federal, state or Indian oil and gas leases, especially those in the Rocky Mountain region, are subject to numerous restrictions, including nondiscrimination statutes. Such operations must be conducted pursuant to certain on-site security regulations and other permits and authorizations issued by the Bureau of Land Management, the Bureau of Ocean Energy Management, the Bureau of Safety and Environmental Enforcement, the Bureau of Indian Affairs, and other federal and state stakeholder agencies.

Environmental Regulations

Our oil and natural gas production, saltwater disposal operations, injection of CO₂, and the processing, handling and disposal of materials such as hydrocarbons and naturally occurring radioactive materials ("NORM") are subject to stringent regulation.  We could incur significant costs, including cleanup costs resulting from a release of product, third-party claims for property damage and personal injuries, or penalties and other sanctions as a result of any violations or liabilities under environmental or other laws applicable to our operations.  Changes in, or more stringent enforcement of, environmental laws and other laws applicable to our operations could also result in delays or additional operating costs and capital expenditures.

Various federal, state and local laws and regulations controlling the discharge of materials into the environment, or otherwise relating to the protection of the environment, directly impact our oil and gas exploration, development and production operations.  These include, among others, (1) regulations adopted by the EPA and various state agencies regarding approved methods of disposal for certain hazardous and nonhazardous wastes; (2) the Comprehensive Environmental Response, Compensation, and Liability Act and analogous state laws that regulate the removal or remediation of previously disposed wastes (including wastes disposed of or released by prior owners or operators), property contamination (including groundwater contamination), and remedial plugging operations to prevent future contamination; (3) the Clean Air Act and comparable state and local requirements already applicable to our operations and new restrictions on air emissions from our operations, including greenhouse gas emissions and those that could discourage the production of fossil fuels that, when used, ultimately release CO₂; (4) the Oil Pollution Act of 1990, which contains numerous requirements relating to the prevention of, and response to, oil spills into waters of the United States; (5) the Resource Conservation and Recovery Act, which is the principal federal statute governing the treatment, storage and disposal of hazardous wastes; (6) the Endangered Species Act and counterpart state legislation, which protects certain species (and their related habitats), including certain species that could be present on our leases, as threatened or endangered; and (7) state regulations and statutes governing the handling, treatment, storage and disposal of NORM.

Management believes that we are currently in substantial compliance with existing applicable environmental laws and regulations, and does not currently anticipate that future compliance will have a materially adverse effect on our consolidated financial position, results of operations or cash flows, although such laws and regulations, and compliance therewith, could cause significant delays or otherwise impede operations, which may, among other things, cause our expected production rates and cash flows to be less than anticipated.

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Denbury Resources Inc.

Hydraulic Fracturing

During 2014, we fracture stimulated five operated wells at Hartzog Draw Field utilizing water-based fluids with no diesel fuel component. We currently have no plans to hydraulically fracture additional wells at Hartzog Draw Field during 2015. However, we are familiar with the laws and regulations applicable to hydraulic fracturing operations and take steps to ensure compliance with these requirements.

ESTIMATED NET QUANTITIES OF PROVED OIL AND NATURAL GAS RESERVES AND PRESENT VALUE OF ESTIMATED FUTURE NET REVENUES

Internal Controls Over Reserve Estimates

Reserve information in this report is based on estimates prepared by D&M, an independent petroleum engineering consulting firm located in Dallas, Texas, utilizing data provided by our internal reservoir engineering team and is the responsibility of management. We rely on D&M's expertise to ensure that our reserve estimates are prepared in compliance with SEC rules and regulations and that appropriate geologic, petroleum engineering, and evaluation principles and techniques are applied in accordance with practices generally recognized by the petroleum industry as presented in the publication of the Society of Petroleum Engineers entitled "Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information (Revision as of February 19, 2007)".  The person responsible for the preparation of the reserve report is a Senior Vice President at D&M; he is a Registered Professional Engineer in the State of Texas. He received a Bachelor of Science degree in Petroleum Engineering at Texas A&M University in 1974, and he has in excess of 40 years of experience in oil and gas reservoir studies and evaluations.  Our Senior Vice President – Development, Technical and Innovation is primarily responsible for overseeing the independent petroleum engineering firm during the process.  Our Senior Vice President – Development, Technical and Innovation has a Master of Science and Bachelor of Science degree in Chemical Engineering from Columbia University, a Bachelor of Science in Chemistry from Davidson College and over 31 years of industry experience working with petroleum reserve estimates.  D&M relies on various data provided by our internal reservoir engineering team in preparing its reserve estimates, including such items as oil and natural gas prices, ownership interests, production information, operating costs, planned capital expenditures and other technical data. Our internal reservoir engineering team consists of qualified petroleum engineers who maintain the Company's internal evaluation of reserves and compare the Company's information to the reserves prepared by D&M. Management is responsible for designing the internal control procedures used in the preparation of our oil and gas reserves, which include verification of data input into reserve forecasting and economics evaluation software, as well as multi-discipline management reviews.  The internal reservoir engineering team reports directly to our Senior Vice President – Development, Technical and Innovation.  In addition, our Board of Directors' Reserves and Health, Safety and Environmental ("HSE") Committee, on behalf of the Board of Directors, oversees the qualifications, independence, performance and hiring of our independent petroleum engineering firm and reviews the final report and subsequent reporting of our oil and natural gas reserve estimates.  The Chairman of the Reserves and HSE Committee holds a Ph.D. in Chemical Engineering from the Massachusetts Institute of Technology and bachelor's degrees in Chemistry and Mathematics from Capital University in Ohio. He has 35 years of industry experience, with responsibilities including reserves preparation and approval.

Oil and Natural Gas Reserve Estimates

D&M prepared estimates of our net proved oil and natural gas reserves as of December 31, 2014, 2013 and 2012.  See the summary of D&M's report as of December 31, 2014, included as an exhibit to this Form 10-K. These estimates of reserves were prepared using an average price equal to the unweighted arithmetic average of hydrocarbon prices on the first day of each month within the 12-month period in accordance with rules and regulations of the SEC.  These oil and natural gas reserve estimates do not include any value for probable or possible reserves that may exist, nor do they include any value for undeveloped acreage.  The reserve estimates represent our net revenue interest in our properties.  During 2014, we provided oil and gas reserve estimates for 2013 to the United States Energy Information Agency that were substantially the same as the reserve estimates included in our Form 10-K for the year ended December 31, 2013.

Our proved non-producing reserves primarily relate to reserves that are to be recovered from productive zones that are currently behind pipe.  Since a majority of our properties are in areas with multiple pay zones, these properties may have both proved producing and proved non-producing reserves.

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As of December 31, 2014, our estimated proved undeveloped reserves totaled approximately 99.0 MMBOE, or approximately 23% of our estimated total proved reserves, a decline of 81.0 MMBOE from December 31, 2013 levels for these reserves.  Our proved undeveloped oil reserves primarily relate to our CO₂ tertiary operations (80.5 MMBOE), and our proved undeveloped natural gas reserves are primarily located in our Riley Ridge Field (5.9 MMBOE).  We generally consider the CO₂ tertiary proved undeveloped reserves to be lower risk than other proved undeveloped reserves that require drilling at locations offsetting existing production, because all of these proved undeveloped reserves are associated with tertiary recovery operations in fields and reservoirs that historically produced substantial volumes of oil under primary production.

During 2014, we spent approximately $130 million to convert 79.9 MMBOE of proved undeveloped reserves to proved developed reserves, primarily related to behind-pipe reserves at Riley Ridge, as well as continued tertiary development activities at Heidelberg, Tinsley, Bell Creek, and Oyster Bayou fields. During 2014, we added 4.3 MMBOE of proved undeveloped reserves primarily related to our non-tertiary operations at CCA, and recognized other net downward proved undeveloped reserve revisions of 5.4 MMBOE.

As of December 31, 2014, 42.0 MMBOE of our total proved undeveloped reserves are not scheduled to be developed within five years of initial booking, nearly all of which are part of CO₂ EOR projects. We believe these reserves satisfy the conditions to be included as proved reserves because (1) we have established and continue to follow the previously adopted development plan for each of these projects; (2) we have significant ongoing development activities in each of these CO₂ EOR projects and (3) we have a historical record of completing the development of comparable long-term projects.

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Denbury Resources Inc.

The following table provides certain estimated proved reserve information in total and by category, as well as related pricing information as of December 31, 2014, 2013 and 2012. There are numerous uncertainties inherent in estimating quantities of proved oil and natural gas reserves and their values, including many factors beyond our control.  See Item 1A, Risk Factors – Estimating our reserves, production and future net cash flows is difficult to do with any certainty.  See also Supplemental Oil and Natural Gas Disclosures (Unaudited) to the Consolidated Financial Statements for further discussion of reserve inputs and changes between periods.

	December 31,
	2014			2013			2012
Estimated proved reserves (1)
Oil (MBbls)	362,335			386,659			329,124
Natural gas (MMcf)	452,402			489,954			481,641
Oil equivalent (MBOE)	437,735			468,318			409,398
Reserve volumes categories
Proved developed producing
Oil (MBbls)	240,004			245,722			208,745
Natural gas (MMcf)	72,799			68,976			60,832
Oil equivalent (MBOE)	252,137			257,218			218,884
Proved developed non-producing
Oil (MBbls)	29,373			30,670			27,264
Natural gas (MMcf) (2)	343,622			3,119			3,359
Oil equivalent (MBOE)	86,643			31,190			27,824
Proved undeveloped
Oil (MBbls)	92,958			110,267			93,115
Natural gas (MMcf) (2)	35,981			417,859			417,450
Oil equivalent (MBOE)	98,955			179,910			162,690
Percentage of total MBOE
Proved developed producing	57		%	55		%	53		%
Proved developed non-producing	20		%	7		%	7		%
Proved undeveloped	23		%	38		%	40		%
Representative oil and natural gas prices (3)
Oil – NYMEX	$	94.99		$	96.94		$	94.71
Natural gas – Henry Hub	4.30			3.67			2.85
Present values (in thousands) (4)
Discounted estimated future net cash flows before income taxes (PV-10 Value) (5)	$	8,748,069		$	10,633,783		$	9,909,592
Standardized measure of discounted estimated future net cash flows after income taxes ("Standardized Measure")	$	5,908,128		$	7,128,744		$	6,414,380

(1) Estimated proved reserves as of December 31, 2012, reflect the sale of reserves associated with our Bakken area assets sold in 2012 (approximately 109 MMBOE), but do not include reserves of 42.2 MMBOE related to the CCA Acquisition, acquired during the first quarter of 2013.

(2) In 2014, we converted approximately 364 Bcf of proved undeveloped natural gas reserves at Riley Ridge to proved developed non-producing reserves, as these reserves are behind pipe during the period in which the Riley Ridge gas processing facility is shut-in, which we currently expect will continue until 2016.

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(3) The reference prices were based on the arithmetic average of the first-day-of-the-month NYMEX commodity prices for each month during the respective year. These prices do not reflect adjustments for market differentials by field that are utilized in the preparation of our reserve report to arrive at the appropriate net price we receive, and also do not reflect significant crude oil price declines in late 2014 and early 2015, when oil prices dropped rapidly, declining to below $45 per Bbl in January 2015. In response to these price decreases, we have deferred our development spending for certain projects in 2015, which has been reflected in our December 31, 2014, reserve report. Sustained prices at these recent levels would result in a significant decrease in our proved reserve value, and to a lesser degree, a reduction in our proved reserve volumes.  See Management's Discussion and Analysis of Financial Condition and Results of Operations – Results of Operations – Operating Results Tablefor details of oil and natural gas prices received, both including and excluding the impact of derivative settlements.

(4) Determined based on the average first-day-of-the-month prices for each month, adjusted to prices received by field in accordance with standards set forth in the FASC. The decrease in the PV-10 Value and the Standardized Measure in 2014 was significantly impacted by the decline in oil prices we received relative to NYMEX oil prices (our NYMEX oil price differential) between 2013 and 2014. The weighted-average oil price differentials utilized were $3.10 per Bbl below representative NYMEX oil prices as of December 31, 2014, compared to $3.41 per Bbl and $7.57 per Bbl above representative NYMEX oil prices as of December 31, 2013 and 2012, respectively.

(5) PV-10 Value is a non-GAAP measure and is different from the Standardized Measure in that PV-10 Value is a pre-tax number and the Standardized Measure is an after-tax number.  The information used to calculate PV-10 Value is derived directly from data determined in accordance with FASC Topic 932.  The difference between these two amounts, the discounted estimated future income tax, was $2.84 billion at December 31, 2014; $3.51 billion at December 31, 2013; and $3.50 billion at December 31, 2012.  We believe that PV-10 Value is a useful supplemental disclosure to the Standardized Measure because the Standardized Measure can be impacted by a company's unique tax situation, and it is not practical to calculate the Standardized Measure on a property-by-property basis.  Because of this, PV-10 Value is a widely used measure within the industry and is commonly used by securities analysts, banks and credit rating agencies to evaluate the estimated future net cash flows from proved reserves on a comparative basis across companies or specific properties.  PV-10 Value is commonly used by us and others in our industry to evaluate properties that are bought and sold and to assess the potential return on investment in our oil and gas properties. PV-10 Value is not a measure of financial or operating performance under GAAP, nor should it be considered in isolation or as a substitute for the Standardized Measure.  Our PV-10 Value and the Standardized Measure do not purport to represent the fair value of our oil and natural gas reserves. See Glossary and Selected Abbreviations for the definition of "PV-10 Value" and see Supplemental Oil and Natural Gas Disclosures (Unaudited) to the Consolidated Financial Statements for additional disclosures about the Standardized Measure.

Item 1A.  Risk Factors

A lengthy period of low oil prices or their further deterioration could adversely affect our future financial condition, results of operations, cash flows, the carrying value of our oil and gas properties, our dividend payments and our growth prospects.

As discussed in greater detail in the risk factors below, NYMEX oil prices have declined from $107 per Bbl in June 2014 to below $45 per Bbl in January 2015. If oil prices remain at late 2014 or early 2015 levels or decline further for an extended period of time, we could be harmed in a number of ways:

•lower cash flows from operations may require continued or further reduced levels of capital expenditures;

• reduced levels of capital expenditures in turn could lower our present and future production levels, and lower the quantities and value of our oil and gas reserves, which constitute our major asset;

• our lenders could reduce our borrowing base, and we may not be able to raise capital at attractive rates in the public markets;

• cause us to change our policy of paying regular cash dividends, or reduce the amount of dividends below the current rate;

• we could be required to impair various assets, including a write-down of our oil and gas assets, our goodwill or the value of other tangible or intangible assets;

• construction of plants that produce CO₂ as a byproduct that we can purchase could be delayed or cancelled, thus limiting the amount of industrial-source CO₂ available for use in our tertiary operations; and/or

• our potential cash flows from our 2015 and 2016 commodity derivative contracts that include sold puts could be limited to the extent that oil prices are below the prices of those sold puts.

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If oil prices fall to lower levels, some or all of our tertiary projects could become uneconomical. We may decide to suspend future expansion projects, and if prices were to drop below our cash break-even point for an extended period of time, we may further decide to shut-in existing production, both of which could have a material adverse effect on our operations and reduce our production. Since operating costs do not decrease as quickly as commodity prices, it is difficult to determine a current precise break-even point for our tertiary projects; however, based on prior history, we currently estimate an industry-competitive rate of return at relatively low oil prices, depending on the specific field and area.

Oil and natural gas prices are volatile.

Oil and natural gas prices historically have been volatile and may continue to be volatile in the future. Therefore, even if oil prices recover for a period of time, volatility will remain, and prices could move downward or upward on a rapid or repeated basis, which can make transactions, valuations and business strategies difficult. Our cash flow from operations is highly dependent on the prices that we receive for oil.  Oil prices currently affect us more than natural gas prices because oil comprised approximately 95% of our 2014 production and 83% of our proved reserves at December 31, 2014. The prices for oil and natural gas are subject to a variety of factors that are beyond our control.  These factors include the supply of, and demand for, these commodities, which fluctuate with changes in market and economic conditions and other factors, including:

• the level of worldwide consumer demand for oil and natural gas and the domestic and foreign supply of oil and natural gas and levels of domestic oil and gas storage;

• the degree to which members of the Organization of Petroleum Exporting Countries maintain oil price and production controls;

• the degree to which domestic oil and natural gas production decreases U.S. imports of crude oil;

• domestic governmental regulations and taxes;

• adverse weather conditions, including hurricanes and tropical storms in and around the Gulf of Mexico that can damage oil and natural gas facilities and delivery systems and disrupt operations, and winter conditions and forest fires in the Rocky Mountains that can delay or impede operations;

• commodity and financial market uncertainty;

• worldwide political events and conditions, including actions taken by foreign oil and natural gas producing nations; and

• worldwide economic conditions.

These factors and the volatility of the energy markets generally make it extremely difficult to predict future oil and natural gas price movements.  For the past several years, we have employed a strategy of hedging a substantial portion of our forecasted production approximately 18 months to two years into the future (from the then-current quarter), to mitigate the risks associated with price fluctuations (see Note 9, Commodity Derivative Contracts, to the Consolidated Financial Statements for details regarding our commodity derivative contracts).  As of February 19, 2015, we have oil derivative contracts in place covering 58,000 Bbls/d for the first three quarters of 2015, 38,000 Bbls/d for the fourth quarter of 2015, 36,000 Bbls/d for the first quarter of 2016, and 12,000 Bbls/d for the second quarter of 2016. With the decline in commodity futures prices in late 2014 and early 2015, as of late February 2015, we have deferred entering into new oil derivative contracts since the third quarter of 2014. Therefore, as of late February 2015, the percentage of our forecasted oil production that is currently hedged for the fourth quarter of 2015 and calendar 2016 is less than the percentage hedged in recent years. During periods of lower oil prices, we may defer entering into new contracts until futures prices return to levels that we consider economically conducive to our doing so.

The prices we receive for our crude oil often do not correlate with NYMEX prices and can vary from such prices depending on, among other factors, the quality of the crude oil we sell, the location of our crude oil production and the related markets to which we sell, variations in prices paid based upon different indices used, and the pricing contracts and indices at which we sell production.  Our NYMEX differentials on a field-by-field basis over the last few years have ranged from approximately $23 per Bbl above NYMEX to approximately $25 per Bbl below NYMEX.  On a corporate-wide basis, our NYMEX differentials over the last few years have ranged from approximately $11 per Bbl above NYMEX oil prices to approximately $5 per Bbl below NYMEX oil prices.  These variances have been due to various factors and are difficult to forecast or anticipate, but they have a direct impact on the net oil price we receive. In recent years we have benefited from the favorable differential for sales based upon the LLS index relative to NYMEX prices, but market dynamics of the region over the past year suggest that these differentials to NYMEX are unlikely to return to the more favorable levels seen previously due to the influx of light sweet crude and condensate from producing regions outside of the Gulf Coast region. See Significant Oil and Gas Purchasers and Product Marketing and

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Management's Discussion and Analysis of Financial Condition and Results of Operations – Results of Operations –Oil and Natural Gas Revenues for further discussion.

A financial downturn in one or more of the world's major markets could negatively affect our liquidity, business and financial condition.

Liquidity is essential to our business.  Our liquidity could be substantially negatively affected by an inability to obtain capital in the long-term or short-term debt capital markets or equity capital markets or an inability to access bank financing.  A prolonged credit crisis, including a severe economic contraction in Europe or turmoil in the global financial system, could materially affect our liquidity, business and financial condition.  In the past, such conditions have adversely impacted financial markets and have created substantial volatility and uncertainty with the related negative impact on global economic activity. Negative credit market conditions could inhibit our lenders from fully funding our bank credit facility or cause them to make the terms of our bank credit facility more costly and more restrictive.  Negative economic conditions could also adversely affect the collectability of our trade receivables or performance by our suppliers or cause our commodity hedging arrangements to be ineffective if our counterparties are unable to perform their obligations or otherwise seek bankruptcy protection.

Our production will decline if our access to sufficient amounts of carbon dioxide is limited.

Our long-term strategy is primarily focused on our CO₂ tertiary recovery operations. The crude oil production from our tertiary recovery projects depends, in large part, on having access to sufficient amounts of CO₂.  Our ability to produce oil from these projects would be hindered if our supply of CO₂ was limited due to, among other things, problems with our current CO₂ producing wells and facilities, including compression equipment, or catastrophic pipeline failure.  This could have a material adverse effect on our financial condition, results of operations and cash flows. Our anticipated future crude oil production from tertiary operations is also dependent on the timing, volumes and location of CO₂ injections and, in particular, on our ability to increase our combined purchased and produced volumes of CO₂ and inject adequate amounts of CO₂ into the proper formation and area within each of our tertiary oil fields.

The development of our principal CO₂ source at Jackson Dome involves the drilling of wells to increase and extend the CO₂ reserves available for use in our tertiary fields. These drilling activities are subject to many of the same drilling and geological risks of drilling and producing oil and gas wells (see Oil and natural gas development and producing operations involve various risks below). Recent market conditions may well cause the delay or cancellation of construction of plants that produce CO₂ as a byproduct that we can purchase, thus limiting the amount of industrial-source CO₂ available for our use in our tertiary operations.

Our level of indebtedness may adversely affect operations and limit our growth.

As of December 31, 2014, our outstanding senior indebtedness consisted of $2.9 billion principal amount of subordinated notes, virtually all of which have maturity dates between 2021 and 2023 at interest rates ranging from 4.625% to 6.375% per annum at a weighted average interest rate of 5.26% per annum, and $395.0 million principal amount outstanding under our bank credit facility.  We currently have a borrowing base of $3.0 billion and total lender commitments of $1.6 billion under our bank credit facility and, at December 31, 2014, availability with respect to such commitments of $1.2 billion.  Our bank borrowing base is adjusted annually and upon requested unscheduled special redeterminations, in each case at the banks' discretion, and the amount is established and based, in part, upon certain external factors, such as commodity prices.  We do not know, nor can we control, the results of such redeterminations or the effect of then-current oil and natural gas prices on any such redetermination. A future redetermination lowering our borrowing base could limit availability under our bank credit facility. If the outstanding debt under our bank credit facility exceeds the then-effective and redetermined borrowing base, we will be required to repay the excess amount over a period not to exceed six months.

The level of our indebtedness could have important consequences, including but not limited to the following:

• impairing our ability to obtain additional financing in the future for working capital, capital expenditures, acquisitions or general corporate and other purposes;

• potentially restricting us from making acquisitions or exploiting business opportunities;

• lowering our available cash flow if market interest rates increase or if the level of our indebtedness significantly increases;

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• requiring dedication of a substantial portion of our cash flows from operations to servicing our indebtedness (so that such cash flows would not be available for capital expenditures or other purposes); and

• limiting our ability to borrow additional funds, dispose of assets, pay dividends, fund share repurchases and make certain investments.

The debt covenants contained in the agreements governing our outstanding indebtedness may also affect our flexibility in reacting to changes in the economy and in our industry. For example, as our cash flow from operations is highly dependent on the prices that we receive for oil and natural gas, if oil and natural gas prices remain at depressed levels for an extended period of time, our degree of leverage could increase significantly or our leverage metrics could deteriorate, potentially causing us to not be in compliance with our bank credit facility's maximum permitted ratio of consolidated total net debt to consolidated EBITDAX (as defined in the bank credit facility) of not more than 4.25 to 1.0 (see Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations – Capital Resources and Liquidity – Bank Credit Facility). If we are unable to generate sufficient cash flows or otherwise obtain funds necessary to make required payments on our indebtedness, or if we otherwise fail to comply with the various covenants related to such indebtedness, including covenants in our bank credit facility, we would be in default under our debt instruments. Any such default, if not cured or waived, could permit the holders of such indebtedness to accelerate the maturity of such indebtedness and could cause defaults under other indebtedness, which could have a material adverse effect on us. Our ability to meet our obligations under our debt instruments will depend, in part, upon our future performance, which will be subject to prevailing economic conditions, commodity prices, and financial, business and other factors, including factors beyond our control.

Our planned tertiary operations and the related construction of necessary CO₂ pipelines could be delayed by difficulties in obtaining pipeline rights-of-way and/or permits, and/or by the listing of certain species as threatened or endangered.

The production of crude oil from our planned tertiary operations is dependent upon having access to pipelines to transport available CO₂ to our oil fields at a cost that is economically viable.  Our current and future construction of CO₂ pipelines will require us to obtain rights-of-way from private landowners and from the federal government in certain areas.  Certain states where we operate have considered or may again consider the adoption of laws or regulations that could limit or eliminate the ability of a state, state's legislature or its administrative agencies to exercise eminent domain over private property, in addition to possible judicially imposed constraints on, and additional requirements for, the exercise of eminent domain.  We also conduct operations on federal and other oil and natural gas leases inhabited by species, such as the sage grouse, that could be listed as threatened or endangered under the Endangered Species Act, which listing could lead to tighter restrictions as to federal land use.  These laws and regulations, together with any other changes in law related to the use of eminent domain or the listing of certain species as threatened or endangered, could inhibit or eliminate our ability to secure rights-of-way or otherwise access land for current or future pipeline construction projects.  As a result, obtaining rights-of-way or other means of access may require additional regulatory and environmental compliance, and increased costs in connection therewith, which could delay our CO₂ pipeline construction schedule and initiation of our pipeline operations, and/or increase the costs of constructing our pipelines.

Oil and natural gas development and producing operations involve various risks.

Our operations are subject to all the risks normally incident and inherent to the operation and development of oil and natural gas properties and the drilling of oil and natural gas wells, including, without limitation, well blowouts; cratering and explosions; pipe failure; fires; formations with abnormal pressures; uncontrollable flows of oil, natural gas, brine or well fluids; release of contaminants into the environment and other environmental hazards and risks. In addition, our operations are sometimes near populated commercial or residential areas, which add additional risks. The nature of these risks is such that some liabilities could exceed our insurance policy limits or otherwise be excluded from, or limited by, our insurance coverage, as in the case of environmental fines and penalties, for example, which are excluded from coverage as they cannot be insured.

We could incur significant costs related to these risks that could have a material adverse effect on our results of operations, financial condition and cash flows. Our CO₂ tertiary recovery projects require a significant amount of electricity to operate the related facilities, which is our largest single cost related to the projects.  If these costs or others were to increase significantly, it could have an adverse effect upon the profitability of these operations.  Additionally, a portion of our production activities involves CO₂ injections into fields with wells plugged and abandoned by prior operators.  Although it is often difficult (or impracticable) to determine whether a well has been properly plugged prior to commencing injections and pressuring the oil reservoirs, we have budgeted $45 million for this effort for 2015. We may incur significant costs in connection with remedial plugging operations to

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prevent environmental contamination and to otherwise comply with federal, state and local regulation relative to the plugging and abandoning of our oil, natural gas and CO₂ wells.  In addition to the increased costs, if wells have not been properly plugged, modification to those wells may delay our operations and reduce our production.

While mitigated somewhat by our significant emphasis on tertiary recovery operations in fields and reservoirs that have historically produced substantial volumes of oil under primary production, development activities are subject to many risks, including the risk that we will not recover all or any portion of our investment in such wells.  Drilling for oil and natural gas may involve unprofitable efforts, not only from dry wells, but also from wells that are productive but do not produce sufficient net reserves to return a profit after deducting drilling, operating and other costs.  The cost of drilling, completing and operating a well is often uncertain, and cost factors can adversely affect the economics of a project. Further, our drilling operations may be curtailed, delayed or canceled as a result of numerous factors, including:

• unexpected drilling conditions;

• title problems;

• pressure or irregularities in formations;

• equipment failures or accidents;

• adverse weather conditions, including hurricanes and tropical storms in and around the Gulf of Mexico that can damage oil and natural gas facilities and delivery systems and disrupt operations, and winter conditions and forest fires in the Rocky Mountain region that can delay or impede operations;

• compliance with environmental and governmental requirements; and

• the cost of, or shortages or delays in the availability of, drilling rigs, equipment, pipelines and services.

Estimating our reserves, production and future net cash flows is difficult to do with any certainty.

Estimating quantities of proved oil and natural gas reserves is a complex process.  It requires interpretations of available technical data and various assumptions, including assumptions relating to economic factors such as future commodity prices, production costs, severance and excise taxes, capital expenditures and workover and remedial costs, and the assumed effect of governmental rules and regulations.  There are numerous uncertainties about when a property may have proved reserves as compared to potential or probable reserves, particularly relating to our tertiary recovery operations.  Forecasting the amount of oil reserves recoverable from tertiary operations, and the production rates anticipated therefrom, requires estimates, one of the most significant being the oil recovery factor.  Actual results most likely will vary from our estimates.  Also, the use of a 10% discount factor for reporting purposes, as prescribed by the SEC, may not necessarily represent the most appropriate discount factor, given actual interest rates and risks to which our business, and the oil and natural gas industry in general, are subject.  Any significant inaccuracies in these interpretations or assumptions, or changes of conditions, could result in a revision of the quantities and net present value of our reserves.

The reserves data included in documents incorporated by reference represent estimates only.  Quantities of proved reserves are estimated based on economic conditions, including first-day-of-the-month average oil and natural gas prices for the 12-month period preceding the date of the assessment.  The representative oil and natural gas prices used in estimating our December 31, 2014 reserves were $94.99 per Bbl for crude oil and $4.30 per MMBtu for natural gas, both of which were adjusted for market differentials by field. This prescribed methodology does not reflect significant crude oil price declines in late 2014 and early 2015, when oil prices dropped rapidly, declining to below $45 per Bbl in January 2015. In response to these price decreases, we have deferred our development spending for certain projects in 2015, which has been reflected in our December 31, 2014 reserve report. Sustained prices at late 2014 or early 2015 levels would result in a significant decrease in our proved reserve value, and to a lesser degree, a reduction in our proved reserve volumes, which may cause us to begin recording write-downs due to the full cost ceiling test in the first or second quarter of 2015, and also in subsequent quarterly periods if prices remain low. Our reserves and future cash flows may be subject to revisions based upon changes in economic conditions, including oil and natural gas prices, as well as due to production results, results of future development, operating and development costs, and other factors.  Downward revisions of our reserves could have an adverse effect on our financial condition and operating results.  Actual future prices and costs may be materially higher or lower than the prices and costs used in our estimates.

As of December 31, 2014, approximately 23% of our estimated proved reserves were undeveloped.  Recovery of undeveloped reserves requires significant capital expenditures and may require successful drilling operations.  The reserves data assumes that

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we can and will make these expenditures and conduct these operations successfully, but these assumptions may not be accurate, and these expenditures and operations may not occur.

There are no assurances of our ability to pay dividends in the future and at what level.

During 2014, we declared a regular quarterly dividend of $0.0625 per outstanding common share, and have declared a similar dividend for the first quarter of 2015. While we currently intend to continue to pay regular quarterly cash dividends, our ability to pay dividends may be adversely affected if certain of the other risks described herein were to occur. Our payment of dividends is subject to, and conditioned upon, among other things, compliance with the covenants and restrictions contained in our bank credit facility and the indentures governing our subordinated notes. All dividends will be paid at the discretion of our Board of Directors and will depend upon many factors, including oil prices and their impact on our cash flows, financial condition and such other factors as our Board of Directors may deem relevant from time to time. There are no assurances as to our ability to pay dividends in the future or the level thereof.

Our future performance and growth rate depend upon our ability to find or acquire additional oil and natural gas reserves that are economically recoverable.

Unless we can successfully replace the reserves that we produce, our reserves will decline, resulting eventually in a decrease in oil and natural gas production and lower revenues and cash flows from operations.  We have historically replaced reserves through both acquisitions and internal organic growth activities.  For internal organic growth activities, the magnitude of proved reserves that we can book in any given year depends on our progress with new floods and the timing of the production response; there were no significant additions to our oil and natural gas reserves in 2014, as we initiated no new floods in 2014. In the future, we may not be able to continue to replace reserves at acceptable costs.  The business of exploring for, developing or acquiring reserves is capital intensive.  We may not be able to make the necessary capital investment to maintain or expand our oil and natural gas reserves if our cash flows from operations are reduced, whether due to lower oil or natural gas prices or otherwise, or if external sources of capital become limited or unavailable.  Further, the process of using CO₂ for tertiary recovery, and the related infrastructure, requires significant capital investment up to five yearsprior to any resulting and associated production and cash flows from these projects, heightening potential capital constraints.  If we do not continue to make significant capital expenditures, or if outside capital resources become limited, we may not be able to maintain our growth rate or otherwise meet expectations.

During the last few years, we have acquired several fields at a substantial cost because we believe that they have significant additional production potential through tertiary flooding, and we may have the opportunity to acquire other oil fields that we believe are tertiary flood candidates, requiring significant amounts of capital.  If we are unable to successfully develop and produce the potential oil in any acquired fields, it would negatively affect our return on investment relative to these acquisitions and could significantly reduce our ability to obtain additional capital for the future or fund future acquisitions, and also negatively affect our financial results to a significant degree.

Commodity derivative contracts may expose us to potential financial loss.

To reduce our exposure to fluctuations in the prices of oil and natural gas, we enter into commodity derivative contracts in order to economically hedge a substantial portion of our forecasted oil and natural gas production.  Derivative contracts expose us to risk of financial loss in some circumstances, including when there is a change in the expected differential between the underlying price in the hedging agreement and actual prices received, when the cash benefit from hedges including a sold put is limited to the extent oil prices fall below the price of our sold puts, or when the counterparty to the derivative contract is financially constrained and defaults on its contractual obligations. In addition, these derivative contracts may limit the benefit we would otherwise receive from increases in the prices for oil and natural gas. Information as to these activities is set forth under Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations – Market Risk Management – Oil and Natural Gas Derivative Contracts, and in Note 9, Commodity Derivative Contracts, to the Consolidated Financial Statements.

Shortages of oil field equipment, services and qualified personnel could reduce our cash flow and adversely affect results of operations.

The demand for qualified and experienced field personnel, geologists, geophysicists, engineers and other professionals in the oil and natural gas industry can fluctuate significantly, often in correlation with oil and natural gas prices, causing periodic shortages

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in such personnel.  In recent years, the competition for qualified technical personnel has been fierce, and our personnel costs have been escalating at a rate higher than general inflation, although it is anticipated that recent oil price declines may slacken this personnel shortage to some degree. In the past, during periods of high oil and natural gas prices, we have experienced shortages of oil field and other necessary equipment, including drilling rigs, along with increased prices for such equipment, services and associated personnel.  These types of shortages or price increases could significantly decrease our profit margin, cash flow and operating results and/or restrict or delay our ability to drill wells and conduct our operations, possibly causing us to miss our forecasts and projections.

The marketability of our production is dependent upon transportation lines and other facilities, certain of which we do not control. When these facilities are unavailable, our operations can be interrupted and our revenues reduced.

The marketability of our oil and natural gas production depends, in part, upon the availability, proximity and capacity of transportation lines owned by third parties. In general, we do not control these transportation facilities, and our access to them may be limited or denied. A significant disruption in the availability of, and access to, these transportation lines or other production facilities could adversely impact our ability to deliver to market or produce our oil and thereby cause a significant interruption in our operations.

Governmental laws and regulations relating to environmental protection are costly and stringent.

Our exploration, production, and marketing operations are subject to complex and stringent federal, state, and local laws and regulations governing, among other things, the discharge of substances into the environment or otherwise relating to environmental protection, including the protection of endangered species. These laws and regulations and related public policy considerations affect the costs, manner, and feasibility of our operations and require us to make significant expenditures in order to comply. Failure to comply with these laws and regulations may result in the assessment of administrative, civil, and criminal penalties, the imposition of investigatory and remedial obligations, and the issuance of injunctions that could limit or prohibit our operations. In addition, some of these laws and regulations may impose joint and several, strict liability for contamination resulting from spills, discharges, and releases of substances, including petroleum hydrocarbons and other wastes, without regard to fault, or the legality of the original conduct. Under such laws and regulations, we could be required to remove or remediate previously disposed substances and property contamination, including wastes disposed or released by prior owners or operators. Changes in, or additions to, environmental laws and regulations occur frequently, and any changes or additions that result in more stringent and costly waste handling, storage, transport, disposal, cleanup or other environmental protection requirements could have a material adverse effect on our operations and financial position.

Enactment of legislative or regulatory proposals under consideration could negatively affect our business.

Numerous legislative and regulatory proposals affecting the oil and gas industry have been introduced, are anticipated to be introduced, or are otherwise under consideration, by Congress, state legislatures and various federal and state agencies.  Among these proposals are: (1) climate change/carbon tax legislation introduced in Congress, and EPA regulations to reduce greenhouse gas emissions; (2) proposals contained in the President's budget, along with legislation introduced in Congress (none of which have passed), to impose new taxes on, or repeal various tax deductions available to, oil and gas producers, such as the current tax deductions for intangible drilling and development costs and qualified tertiary injectant expenses which deductions, if eliminated, could raise the cost of energy production, reduce energy investment and affect the economics of oil and gas exploration and production activities; (3) legislation previously considered by Congress (but not adopted) that would subject the process of hydraulic fracturing to federal regulation under the Safe Drinking Water Act, and new, proposed or anticipated Department of Interior and EPA regulations to impose new and more stringent regulatory requirements on hydraulic fracturing activities, particularly those performed on federal lands, and to require disclosure of the chemicals used in the fracturing process; and (4) the Pipeline Safety, Regulatory Certainty, and Job Creation Act enacted in 2011, which increases penalties, grants new authority to impose damage prevention and incident notification requirements, and directs the PHMSA to prescribe minimum safety standards for CO₂ pipelines. Any of the foregoing described proposals could affect our operations and the costs thereof.  The trend toward stricter standards, increased oversight and regulation and more extensive permit requirements, along with any future laws and regulations, could result in increased costs or additional operating restrictions that could have an effect on demand for oil and natural gas or prices at which it can be sold.  However, until such legislation or regulations are enacted or adopted into law and thereafter implemented, it is not possible to gauge their impact on our future operations or our results of operations and financial condition.

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Certain federal income tax deductions currently available with respect to natural gas and oil exploration and development may be eliminated, and additional state taxes on natural gas extraction may be imposed, as a result of future legislation.

In recent years, legislation has been proposed that would, if enacted into law, make significant changes to U.S. federal income tax laws, including the elimination of certain U.S. federal income tax benefits and deductions currently available to oil and gas companies. Such changes include, but are not limited to, (1) the repeal of the percentage depletion allowance for oil and gas properties, (2) the increase of the amortization period of geological and geophysical expenses, (3) the elimination of current deductions for intangible drilling and development costs and qualified tertiary injectant expenses, and (4) the elimination of the deduction for certain U.S. production activities. It is currently unclear whether any such proposals will be enacted into law and, if so, what form such laws might possibly take or impact they may have; however, the passage of such legislation or any other similar change in U.S. federal income tax law could eliminate, reduce or postpone certain tax deductions that are currently available to us, and any such legislation or change could negatively affect the after-tax returns generated on our oil and gas investments and our financial condition and results of operations.

The derivatives market regulations promulgated under the Dodd-Frank Act could have an adverse effect on our ability to hedge risks associated with our business.

The Dodd-Frank Act requires the Commodities Futures Trading Commission ("CFTC") and the SEC to promulgate rules and regulations establishing federal oversight and regulation of the over-the-counter derivatives market and entities that participate in that market, including swap clearing and trade execution requirements. Our derivative transactions are not currently subject to such swap clearing and trade execution requirements; however, in the event our derivative transactions potentially become subject to such requirements, we believe that our derivative transactions would qualify for the "end-user" exception. New or modified rules, regulations or requirements may increase the cost to our counterparties of their hedging and swap positions that they can provide or lower their availability. In addition, for uncleared swaps, the CFTC or federal banking regulators may require end-users to enter into credit support documentation or post margin collateral. Any changes in the regulations of swaps may result in certain market participants deciding to curtail or cease their derivative activities.

While many rules and regulations have been promulgated and are already in effect, other rules and regulations remain to be finalized or effectuated; therefore, the impact of those rules and regulations on us is uncertain at this time. The Dodd-Frank Act, and the rules promulgated thereunder, could (1) significantly increase the cost, or decrease the liquidity, of energy-related derivatives we use to hedge against commodity price fluctuations (including through requirements to post collateral), (2) materially alter the terms of derivative contracts, (3) reduce the availability of derivatives to protect against risks we encounter, and (4) increase our exposure to less creditworthy counterparties. If we reduce our use of derivatives as a result of the Dodd-Frank Act and applicable rules and regulations, our cash flows may become more volatile and less predictable, which could adversely affect our ability to plan for and fund capital expenditures.

The loss of one or more of our large oil and natural gas purchasers could have an adverse effect on our operations.

For the year ended December 31, 2014, three purchasers individually accounted for 10% or more of our oil and natural gas revenues and, in the aggregate, for 56% of such revenues.  The loss of a large single purchaser could adversely impact the prices we receive or the transportation costs we incur.

Certain of our operations may be limited during certain periods due to severe weather conditions and other regulations.

Certain of our operations in North Dakota, Montana and Wyoming, including the construction of CO₂ pipelines, the drilling of new wells and production from existing wells, are conducted in areas subject to extreme weather conditions, including severe cold, snow and rain, which conditions may cause such operations to be hindered or delayed, or otherwise require that they be conducted only during non-winter months, and depending on the severity of the weather, could have a negative effect on our results of operations in these areas. Further, certain of our operations in these areas are confined to certain time periods due to environmental regulations, federal restrictions on when drilling can take place on federal lands, and lease stipulations designed to protect certain wildlife, which regulations, restrictions and limitations could slow down our operations, cause delays, increase costs and have a negative effect on our results of operations.

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Our results of operations could be negatively affected as a result of goodwill or long-lived asset impairments.

At December 31, 2014, our goodwill balance totaled $1.3 billion and our net property and equipment balance totaled $10.4 billion, representing approximately 10% and 81%, respectively, of our total assets. Goodwill is not amortized; rather it is tested for impairment annually during the fourth quarter and when facts or circumstances indicate that the carrying value of our goodwill may be impaired, requiring an estimate of the fair values of the reporting unit's assets and liabilities. Our oil and natural gas properties balance is subject to our quarterly full cost pool ceiling test, and other long-lived assets are required to be tested for impairment when events or circumstances indicate the carrying value may not be recoverable. An impairment of goodwill or long-lived assets could significantly reduce earnings during the period in which the impairment occurs and would result in a corresponding reduction to goodwill or long-lived assets and equity. See Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations– Critical Accounting Policies and Estimates – Impairment Assessment of Goodwill.

We may lose executive officers or other key management personnel, which could endanger the future success of our operations.

Our success depends to a significant degree upon the continued contributions of our executive officers and other key management personnel. Our employees, including our executive officers, are employed at will and do not have employment agreements. If one or more members of our management team dies, becomes disabled or voluntarily terminates employment with us, there is no assurance that we will find a suitable or comparable substitute. We believe that our future success depends, in large part, upon our ability to hire and retain highly skilled managerial personnel. Competition for persons with these skills is intense, and we cannot assure that we will be successful in attracting and retaining such skilled personnel. For example, we are currently conducting a search to fill two vacant executive-level operations positions, but there is no guarantee we can quickly fill them with personnel of our desired skill set. The continued vacancy in these positions or an additional loss of any of our management personnel could adversely affect our operations.

A cyber incident could occur and result in information theft, data corruption, operational disruption, and/or financial loss.

Our business has become increasingly dependent on digital technologies to conduct day-to-day operations, including certain of our exploration, development and production activities.  We depend on digital technology to estimate quantities of oil and gas reserves, process and record financial and operating data, analyze seismic and drilling information and in many other activities related to our business.  Our technologies, systems and networks may become the target of cyber attacks or information security breaches that could result in the disruption of our business operations.  For example, unauthorized access to our seismic data, reserves information or other proprietary information could lead to data corruption, communication interruption, or other operational disruptions in our drilling or production operations, which could cause financial loss.

Although we utilize various procedures and controls to monitor and protect against these threats and to mitigate our exposure to such threats, there can be no assurance that these procedures and controls will be sufficient in preventing security threats from materializing and causing us to suffer such losses in the future.  As cyber threats continue to evolve, we may be required to expend significant additional resources to continue to modify or enhance our procedures and controls or to investigate and remediate any cyber vulnerabilities.

Item 1B.  Unresolved Staff Comments

There are no unresolved written SEC staff comments regarding our periodic or current reports under the Securities Exchange Act of 1934 received 180 days or more before the end of the fiscal year to which this annual report on Form 10-K relates.

Item 2.  Properties

Information regarding the Company's properties called for by this item is included in Item 1, Business and Properties – Oil and Natural Gas Operations.  We also have various operating leases for rental of office space, office and field equipment, and vehicles.  See Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations – Capital Resources and Liquidity – Off-Balance Sheet Agreements, and Note 11, Commitments and Contingencies, to the Consolidated Financial Statements for the future minimum rental payments.  Such information is incorporated herein by reference.

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Denbury Resources Inc.

Item 3.  Legal Proceedings

We are involved in various lawsuits, claims and regulatory proceedings incidental to our businesses.  While we currently believe that the ultimate outcome of these proceedings, individually and in the aggregate, will not have a material adverse effect on our consolidated financial position or overall trends in results of operations or cash flows, litigation is subject to inherent uncertainties.  If an unfavorable ruling in one of these lawsuits or proceedings were to occur, there exists the possibility of a material adverse impact on our net income in the period in which the ruling occurs.  We provide accruals of probable losses for litigation and claims if we determine that we may have a range of legal exposure that would require accrual.

Item 4.  Mine Safety Disclosures

Not applicable.

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Denbury Resources Inc.

PART II

Item 5.  Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Common Stock Trading Summary

The following table summarizes the high and low reported sales prices on days in which there were trades of Denbury's common stock on the New York Stock Exchange ("NYSE") for each quarterly period for the last two fiscal years, as well as dividends declared within those periods.  Prior to 2014, we had not historically declared or paid dividends on our common stock. As of January 31, 2015, based on information from the Company's transfer agent, American Stock Transfer and Trust Company, the number of holders of record of Denbury's common stock was 1,772.  On February 26, 2015, the last reported sale price of Denbury's common stock, as reported on the NYSE, was $8.38 per share.

	2014						2013
	High		Low		Dividends Declared Per Share		High		Low		Dividends Declared Per Share
First Quarter	$	16.44	$	15.33	$	0.0625	$	19.11	$	16.50	$	—
Second Quarter	18.31		16.14		0.0625		19.48		16.68		—
Third Quarter	18.12		14.93		0.0625		18.55		16.90		—
Fourth Quarter	14.41		6.34		0.0625		19.44		15.98		—

On January 27, 2015, the Board of Directors declared a dividend of $0.0625 per share on our common stock, payable on March 31, 2015, to stockholders of record at the close of business on February 24, 2015. While we currently expect to continue to pay a regular quarterly dividend on our common stock, the declaration and payment of future dividends are at the discretion of our Board of Directors, and the amount thereof will depend on our results of operations, financial condition, capital requirements, level of indebtedness, market conditions, and other factors deemed relevant by the Board of Directors. Our Bank Credit Agreement and senior subordinated note indentures require us to meet certain financial covenants at the time dividend payments are made. For further discussion, see Note 5, Long-Term Debt, to the Consolidated Financial Statements.  No unregistered securities were sold by the Company during 2014.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Month	Total Number of Shares Purchased (1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs  (in millions) (2)
October 2014	3,737	$	12.89	—	$	221.9
November 2014	5,359	10.79		—	221.9
December 2014	66,602	8.25		—	221.9
Total	75,698			—

(1) Stock repurchases during the fourth quarter of 2014 were made in connection with delivery by our employees of shares to us to satisfy their tax withholding requirements related to the vesting of restricted shares and the exercise of stock appreciation rights.

(2) In October 2011, the Company's Board of Directors approved a common share repurchase program for up to $500 million of Denbury's common stock. During 2012 and 2013, the Board of Directors increased the dollar amount of Denbury common shares that could be purchased under the program to an aggregate of up to $1.162 billion. The program has no pre-established ending date and may be suspended or discontinued at any time.  In November 2014, the Company's Board of Directors suspended the common share repurchase program in light of commodity price uncertainty in order to protect our financial

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Denbury Resources Inc.

strength and preserve liquidity. We are not obligated to repurchase any dollar amount or specific number of shares of our common stock under the program.

Between early October 2011, when we announced the commencement of a common share repurchase program, and December 31, 2014, we repurchased 60.0 million shares of Denbury common stock (approximately 14.9% of our outstanding shares of common stock at September 30, 2011) for $940.0 million, or $15.68 per share.

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Denbury Resources Inc.

Share Performance Graph

The following Performance Graph and related information shall not be deemed "soliciting material" or to be "filed" with the SEC, nor shall such information be incorporated by reference into any future filings under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that the Company specifically incorporates it by reference into such filings.

The following graph illustrates changes over the five-year period ended December 31, 2014, in cumulative total stockholder return on our common stock as measured against the cumulative total return of the S&P 500 Index and the Dow Jones U.S. Exploration and Production Index.  The graph tracks the performance of a $100 investment in our common stock and in each index (with the reinvestment of all dividends for the index securities) from December 31, 2009, to December 31, 2014.

COMPARISON OF 5-YEAR CUMULATIVE TOTAL RETURN

	December 31,
	2009		2010		2011		2012		2013		2014
Denbury Resources Inc.	$	100	$	129	$	102	$	109	$	111	$	56
S&P 500 (1)	100		115		117		136		180		205
Dow Jones U.S. Exploration & Production (2)	100		117		112		118		156		139

(1) Copyright© 2015 S&P, a division of The McGraw-Hill Companies Inc. All rights reserved.

(2) Copyright© 2015 Dow Jones & Co. All rights reserved.

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Denbury Resources Inc.

Item 6. Selected Financial Data

	Year Ended December 31,
In thousands, except per-share data or otherwise noted	2014			2013			2012			2011			2010 (1)
Consolidated Statements of Operations data
Revenues and other income
Oil, natural gas, and related product sales	$	2,372,473		$	2,466,234		$	2,409,867		$	2,269,151		$	1,793,292
Other	62,732			50,893			46,605			40,173			128,499
Total revenues and other income	$	2,435,205		$	2,517,127		$	2,456,472		$	2,309,324		$	1,921,791
Net income attributable to Denbury stockholders	635,491			409,597			525,360			573,333			271,723
Net income per common share
Basic	1.82			1.12			1.36			1.45			0.73
Diluted	1.81			1.11			1.35			1.43			0.72
Dividends declared per common share	0.25			—			—			—			—
Weighted average number of common shares outstanding
Basic	348,962			366,659			385,205			396,023			370,876
Diluted	351,167			369,877			388,938			400,958			376,255
Consolidated Statements of Cash Flows data
Cash provided by (used in)
Operating activities	$	1,222,825		$	1,361,195		$	1,410,891		$	1,204,814		$	855,811
Investing activities	(1,076,755		)	(1,275,309		)	(1,376,841		)	(1,605,958		)	(354,780		)
Financing activities	(135,104		)	(172,210		)	45,768			37,968			(139,753		)
Production (average daily)
Oil (Bbls)	70,606			66,286			66,837			60,736			59,918
Natural gas (Mcf)	22,955			23,742			29,109			29,542			78,057
BOE (6:1)	74,432			70,243			71,689			65,660			72,927
Unit sales prices – excluding impact of derivative settlements
Oil (per Bbl)	$	90.74		$	100.67		$	97.18		$	100.03		$	75.97
Natural gas (per Mcf)	4.07			3.53			3.05			4.79			4.63
Unit sales prices – including impact of derivative settlements
Oil (per Bbl)	$	90.82		$	100.64		$	96.77		$	98.90		$	71.69
Natural gas (per Mcf)	3.99			3.53			5.67			7.34			6.45
Costs per BOE
Lease operating expenses (2)	$	23.84		$	28.50		$	20.29		$	21.17		$	17.67
Taxes other than income	6.25			6.87			6.10			6.16			4.53
General and administrative expenses	5.83			5.66			5.49			5.24			5.04
Depletion, depreciation, and amortization	21.83			19.89			19.34			17.07			16.32
Proved oil and natural gas reserves (3)
Oil (MBbls)	362,335			386,659			329,124			357,733			338,276
Natural gas (MMcf)	452,402			489,954			481,641			625,208			357,893
MBOE (6:1)	437,735			468,318			409,398			461,934			397,925

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Denbury Resources Inc.

	Year Ended December 31,
In thousands, except per-share data or otherwise noted	2014		2013		2012		2011		2010 (1)
Proved carbon dioxide reserves
Gulf Coast region (MMcf) (4)	5,697,642		6,070,619		6,073,175		6,685,412		7,085,131
Rocky Mountain region (MMcf) (5)	3,035,286		3,272,428		3,495,534		2,195,534		2,189,756
Proved helium reserves associated with Denbury's production rights (6)
Rocky Mountain region (MMcf)	13,231		13,251		12,712		12,004		7,159
Consolidated Balance Sheets data
Total assets	$	12,727,802	$	11,788,737	$	11,139,342	$	10,184,424	$	9,065,063
Total long-term liabilities	6,383,821		5,812,132		5,408,032		4,716,659		4,105,011
Stockholders' equity	5,703,856		5,301,406		5,114,889		4,806,498		4,380,707

(1) On March 9, 2010, we acquired Encore Acquisition Company ("Encore").  We consolidated Encore's results of operations beginning March 9, 2010.

(2) If lease operating expenses and related insurance recoveries recorded in 2013 and 2014 to remediate an area of Delhi Field were excluded, lease operating expenses would have totaled $654.7 million and $616.6 million for the years ended December 31, 2014 and 2013, respectively, and lease operating expenses per BOE would have averaged $24.10 and $24.05 for the years ended December 31, 2014 and 2013, respectively (see Management's Discussion and Analysis of Financial Condition and Results of Operations –Capital Resourcesand Liquidity – Insurance Recoveries to Cover Costs of 2013 Delhi Field Release).

(3) Estimated proved reserves as of December 31, 2012, reflect the disposition of reserves associated with our Bakken area assets sold in late 2012 (approximately 109 MMBOE), but do not include then-estimated reserves of approximately 42.2 MMBOE related to the CCA acquisition from ConocoPhillips, which closed during the first quarter of 2013. See Note 2, Acquisition, to the Consolidated Financial Statements for further discussion of the CCA acquisition.

(4) Proved CO₂ reserves in the Gulf Coast region consist of reserves from our reservoirs at Jackson Dome and are presented on a gross or 8/8ths working interest basis, of which our net revenue interest was approximately 4.5 Tcf, 4.8 Tcf, 4.8 Tcf, 5.3 Tcf and 5.6 Tcf at December 31, 2014, 2013, 2012, 2011 and 2010, respectively, and include reserves dedicated to volumetric production payments of 9.3 Bcf, 28.9 Bcf, 57.1 Bcf, 84.7 Bcf and 100.2 Bcf at December 31, 2014, 2013, 2012, 2011 and 2010, respectively.  (See Supplemental CO₂and Helium Disclosures (Unaudited) to the Consolidated Financial Statements.)

(5) Proved CO₂ reserves in the Rocky Mountain region consist of our reserves at Riley Ridge (presented on a gross working interest basis) and our overriding royalty interest in LaBarge Field, of which our net revenue interest was approximately 2.6 Tcf, 2.9 Tcf, 2.9 Tcf, 1.6 Tcf and 0.9 Tcf at December 31, 2014, 2013, 2012, 2011 and 2010, respectively.

(6) Reserves associated with helium production rights include helium reserves located in the acreage in the Rocky Mountain region for which we have the contractual right to extract the helium on behalf of the U.S. government, which owns the helium. Our extraction agreement with the U.S. government gives us the ability to produce the helium on behalf of the U.S. government in exchange for a fee, which amount fluctuates based upon the realized sales proceeds we receive for the helium.  The estimate of helium reserves is reduced to reflect the estimated fee we will remit to the U.S. government. Our extraction agreement with the U.S. government has a minimum term extending 20 years from first production and continuing thereafter until either party terminates the contract. Reserve volumes presented herein assume that the term of this helium extraction agreement continues beyond 20 years, given the benefit to both parties to the agreement. As of December 31, 2014, there was no helium production at Riley Ridge, as the Riley Ridge gas processing facility is shut-in, which we currently expect will continue until 2016.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis should be read in conjunction with our Consolidated Financial Statements and Notes thereto included in Item 8, Financial Statements and Supplementary Information.  Our discussion and analysis includes forward-looking information that involves risks and uncertainties and should be read in conjunction with Risk Factors under Item 1A of this Form 10-K, along with Forward-Looking Information at the end of this section for information on the risks and uncertainties that could cause our actual results to be materially different from our forward-looking statements.

OVERVIEW

Denbury is an independent oil and natural gas company with operations focused in two key operating areas: the Gulf Coast and Rocky Mountain regions. Our goal is to increase the value of our properties through a combination of exploitation, drilling and proven engineering extraction practices, with the most significant emphasis relating to CO₂ enhanced oil recovery operations.

2014 Operating Highlights. During 2014, we recognized net income of $635.5 million, or $1.81 per diluted common share, compared to net income of $409.6 million, or $1.11 per diluted common share, during 2013.  This increase in net income between the comparative periods was principally due to a $596.3 million (pre-tax) positive change in commodity derivatives expense (income) between the two periods (principally due to a $594.2 million noncash increase in the fair value of our derivatives). Our higher income in 2014 is further attributable to an $83.0 million (pre-tax) decrease in lease operating expenses, as 2013 included Delhi remediation charges of $114.0 million (pre-tax), compared to a net reduction of lease operating expenses of $7.1 million (pre-tax) in 2014 due primarily to partial insurance recoveries received related to the same remediation. Partially offsetting these favorable items was a $93.8 million (pre-tax) decrease in oil, natural gas, and related product sales, driven by a 10% decrease in our realized oil price between the two periods offset in part by a 6% increase in production, a $69.3 million (pre-tax) increase in the loss on early extinguishment of debt, and a $42.3 million (pre-tax) increase in interest expense, primarily driven by a decrease in capitalized interest. These matters are further described throughout this Management's Discussion and Analysis.

During 2014, our oil and natural gas production, which was 95% oil, averaged 74,432 BOE/d, compared to an average of 70,243 BOE/d produced during 2013.  This 6% increase in production was primarily due to a 7% increase in our tertiary oil production in 2014 and our receiving only nine months of production in 2013 from the purchase of additional interests in the Cedar Creek Anticline ("CCA") in late March 2013.

Our average realized oil price per barrel, excluding the impact of commodity derivative contracts, was $90.74 per Bbl during 2014, a decrease of 10% compared to $100.67 per Bbl realized during 2013.  The oil price we realized relative to NYMEX oil prices (our NYMEX oil price differential) was $2.21 per Bbl below NYMEX prices during 2014, a $4.83 per Bbl decrease compared to prices of $2.62 per Bbl above NYMEX in 2013, driven by a decrease in the Light Louisiana Sweet ("LLS") index premium in 2014 and an increase in the Rocky Mountain region discount in 2014 relative to NYMEX oil prices.

In recent years, and particularly during 2013, we have experienced gradually rising costs. As a result, one of our primary focuses in 2014 was to reduce costs throughout the organization, through a number of internal initiatives. For example, excluding Delhi remediation costs and insurance reimbursements and unplanned Riley Ridge well workovers, our recurring lease operating expenses per BOE decreased each sequential quarter in 2014 and decreased a total of 14% between the fourth quarter of 2013 and the fourth quarter of 2014, with the decrease in workover costs the primary component of lease operating expense cost reductions. Our goal is to continue to reduce both capital project costs and per-barrel operating costs, and we believe such reductions are possible, especially in light of the recent decline in oil prices.

Proved Oil and Natural Gas Reserves. Our estimated proved oil and gas reserves were 437.7 MMBOE as of December 31, 2014, compared to 468.3 MMBOE at December 31, 2013. The net reduction of total proved reserves of 30.6 MMBOE during 2014 was primarily the result of 27.2 MMBOE of current-year production and the absence of any meaningful reserve extensions or discoveries in 2014, as there were no significant new CO₂ EOR floods initiated in 2014.

April 2014 Debt Refinancing. On April 30, 2014, we issued $1.25 billion of 5½% Senior Subordinated Notes due 2022 (the "5½% Notes"). The net proceeds of $1.23 billion were used to repurchase and redeem all $996.3 million of our outstanding 8¼% Senior Subordinated Notes due 2020 (the "8¼% Notes"), which were issued in 2010, and to pay down approximately $150

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

million of outstanding borrowings on our bank credit facility. This refinancing provides for ongoing net annual interest savings of approximately $17 million. Due to the refinancing, we recognized a loss on extinguishment of debt of $113.9 million (principally related to the tender or redemption premium on the 8¼% Notes repurchased) during the second quarter of 2014.

Recent Oil Price Decline and Impact on Our Business. Although oil prices have historically been volatile, during the second half of 2014 and continuing into 2015, oil prices dropped rapidly, with NYMEX prices declining from $107 per Bbl in June 2014 to less than $54 per Bbl in late December 2014, and further declining to below $45 per Bbl in January 2015.In response to the decline in oil prices during the latter part of 2014, in November 2014 we announced a significant reduction in our capital spending plans, reducing projected 2015 capital spending to $550 million, or roughly half of 2014 levels, and decreasing our estimated dividend rate for 2015 to $0.40 per common share on an annualized basis, from the previous projection of a rate ranging between $0.50 per common share to $0.60 per common share on an annualized basis. At the same time, we announced that our share repurchase program was being suspended in order to protect our financial health and preserve liquidity amid a period of declining oil prices and overall oil price uncertainty. As a result of further oil price declines in late 2014 and early 2015, in January 2015, we announced another change in our planned 2015 dividend rate, as the Company's Board of Directors declared a dividend of $0.0625 per common share for the first quarter of 2015, or $0.25 per common share on an annualized basis, a level consistent with our 2014 dividend rate.

Oil prices generally constitute the largest single variable in our operating results. For the past several years, we have employed a strategy of hedging a substantial portion of our forecasted production, approximately 18 months to two years into the future (from the then-current quarter), to mitigate the risks associated with fluctuations during periods of oil price declines. For 2015, we have hedges covering approximately 70% to 75% of our forecasted oil production, which will help to diminish the impact of the significant oil price drop on our 2015 cash flows and operating results; however, to the extent our production is unhedged, we are fully exposed to the decline in oil prices. For the fourth quarter of 2015 and 2016, we have significantly fewer hedges, and thus, the impact of low oil prices on our cash flows and operating results will be more impactful unless oil prices increase. See Results of Operations – Commodity Derivative Contracts and Note 9, Commodity Derivative Contracts, to the Consolidated Financial Statements for additional information regarding our commodity derivative contracts.

CAPITAL RESOURCES AND LIQUIDITY

Overview. Our primary sources of capital and liquidity are our cash flows from operations and availability for borrowings under our bank credit facility. Our business is capital intensive, and it is common for oil and natural gas companies our size to reinvest most or all of their cash flow into developing new assets. We generally attempt to balance our capital expenditures and dividends with cash flows from operations, and during 2014, we spent a combined $1.2 billion on capital expenditures and dividends while generating $1.2 billion of cash flows from operations. Our 2014 cash flow from operations was lower than the $1.4 billion generated in 2013, due primarily to lower oil prices, which caused a decrease in oil revenues and changes in working capital items.

As discussed in the Overview above, we have been proactive in adjusting our 2015 capital spending and dividend plans in connection with the current lower oil price environment. We project that we will have adequate capital resources and liquidity for the foreseeable future because (1) we have significant borrowing capacity on our bank line and recently extended its maturity to December 2019; (2) we have commodity derivative contracts in place to cover a significant portion of our forecasted oil production for 2015 that will lessen the impact of the current lower oil price environment (see Note 9, Commodity Derivative Contracts, to the Consolidated Financial Statements for further details regarding the prices and volumes of our commodity derivative contracts); (3) generally, we plan to fund both our projected capital expenditures and dividends with cash flows from operations; (4) we can significantly reduce our capital expenditures for extended periods of time if necessary, due to lower cash flows, and still maintain relatively flat or slightly lower production levels as a result of the unique characteristics of CO₂ EOR operations; and (5) the maturity dates of all but a minor amount of our senior subordinated notes extend seven years or more, including the new 5½% Notes issued in connection with the April 2014 debt refinancing (discussed above), and carry attractive fixed interest rates ranging between 4⅝% and 6⅜%.

If oil prices remain at relatively low levels beyond 2015, our cash flows from operations will likely be significantly lower than current levels, as our oil hedges presently in place for 2016 cover significantly less forecasted oil production. Therefore, we are currently focused on reducing our operating costs so as to preserve as much of our operating margin as possible in this lower oil price environment, and if this low oil price environment persists, we intend to continue to make adjustments to our capital

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

spending plans to preserve our financial health. Fortunately, some of our costs, such as our CO₂ purchases, adjust proportionally with changes in the price of oil. We also expect that our cost of services and equipment will come down in this lower oil price environment, but this may take time and may not reflect as large a percentage decrease as the decrease in the price of oil. Although we can reduce capital spending and maintain production at relatively flat or slightly lower production levels for some time, we can do this for only a limited period of time before our production will begin to decline significantly, which will further lower our cash flow from operations. Further, if this lower oil price environment continues into 2016, we may be required to amend our debt to EBITDAX covenant under our bank credit agreement, which amendment we believe we can obtain, although it may restrict some of the financial flexibility we currently have (see further discussion in Note 5, Long-Term Debt, to the Consolidated Financial Statements and Bank Credit Facility below).

2015 Capital Spending. We anticipate that our 2015 capital budget, excluding acquisitions, will be $550 million, which includes approximately $85 million in capitalized internal acquisition, exploration and development costs; capitalized interest; and pre-production startup costs associated with new tertiary floods.  This combined 2015 capital budget amount, excluding acquisitions, compares to combined 2014 capital spending of $1.1 billion (see Capital Expenditure Summary below for a summary of actual 2014 expenditures). The 2015 capital budget is comprised of the following:

• $320 million allocated for tertiary oil field expenditures;

• $100 million allocated for other areas, primarily non-tertiary oil field expenditures;

• $30 million to be spent on CO₂ sources;

• $15 million for pipeline construction; and

• $85 million for other capital items such as capitalized internal acquisition, exploration and development costs; capitalized interest; and pre-production startup costs associated with new tertiary floods.

Based on oil and natural gas commodity futures prices in early February 2015, our current production forecast, and our commodity derivative contracts covering a substantial portion of our anticipated 2015 production, we believe our anticipated 2015 cash flows from operations should be adequate to cover our combined 2015 capital budget and currently planned dividend payments. If prices were to decrease further or changes in operating results were to cause us to have a reduction in anticipated 2015 cash flows below our currently forecasted operating cash flows, we would likely further reduce our capital expenditures or reduce our targeted dividend payment, with ample availability on our bank credit facility to cover any potential shortfall. If we further reduce our capital spending due to lower cash flows, any sizeable reduction could lower our anticipated production levels in future years.

Stock Repurchase Program. In November 2014, the Company's Board of Directors suspended our common share repurchase program in light of commodity price uncertainty and in order to protect our financial strength and preserve liquidity.  As of December 31, 2014, we had spent $940.0 million since inception of this program to repurchase 60.0 million shares of our common stock under this program (approximately 14.9% of our outstanding shares at September 30, 2011). See Note 7, Stockholders' Equity, to the Consolidated Financial Statements for further discussion.

Dividends. During 2014 we paid aggregate cash dividends of $87.0 million to holders of our outstanding common stock at a quarterly rate of $0.0625 per outstanding common share, or an annual rate of $0.25 per common share. See Note 14, Subsequent Events, to the Consolidated Financial Statements for details regarding the dividend declared in the first quarter of 2015. The declaration and payment of future dividends are at the discretion of our Board of Directors, and the amount thereof will depend on our results of operations, financial condition, capital requirements, level of indebtedness, market conditions, and other factors deemed relevant by the Board of Directors.

Insurance Recoveries to Cover Costs of 2013 Delhi Field Release. We completed our remediation efforts related to the release of well fluids at the Denbury-operated Delhi Field during the fourth quarter of 2013. During the year ended December 31, 2014, we recorded an additional $16.8 million of lease operating expenses related to this release and its remediation in our Consolidated Statements of Operations, which brings our total cost estimate to date with respect to these expenses to $130.8 million, of which we have paid $112.6 million. The $16.8 million of additional charges in 2014 primarily consist of our actual or estimated expenses related to third-party property and commercial damage claims that have been settled or asserted in connection with the release, which are expected to be recoverable under our insurance policies.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

We maintain insurance policies to cover certain costs, damages and claims related to releases of well fluids and remediation. In October 2014 we received a $25.0 million cost reimbursement ($23.9 million net to Denbury) related to the Delhi Field release and remediation from our insurance carrier providing the first layer of our excess insurance coverage, representing approximately 20% of our total incident costs through year-end 2014. The insurance reimbursement was recognized as a reduction to lease operating expenses in our Consolidated Statements of Operations for the year ended December 31, 2014. We have not reached any agreement with our remaining carriers as to further reimbursements, but given our belief that under our policies we are entitled to reimbursement of between approximately one-third and two-thirds of our total costs, we have filed suit to pursue further reimbursements, the ultimate outcome of which cannot be predicted.

Bank Credit Facility. We amended our bank credit facility in December 2014 to replace our previous credit agreement that was set to mature in May 2016. The amended bank credit facility has a maturity date of December 9, 2019, an initial borrowing base of $3.0 billion, and aggregate lender commitments of $1.6 billion (the "Bank Credit Facility"). The Company elected to maintain the aggregate lender commitments at $1.6 billion to be consistent with the Company's prior facility, and as of December 31, 2014, we had availability of approximately $1.2 billion with respect to such lender commitments. The Bank Credit Facility provides for an annual redetermination of the borrowing base around May 1 of each year and permits us to increase the aggregate lender commitments up to the borrowing base amount with approval and incremental commitments from the existing lenders or new lenders. The new facility reduced our borrowing costs by 25 basis points on the drawn spread and provided for a lower interest rate on the undrawn spread. Based on the current value of our proved reserves assessed by the banks using their pricing assumptions, we currently do not anticipate a near-term reduction in our borrowing base below our aggregate lender commitments of $1.6 billion. However, the borrowing base is subject to lender discretion and may be reduced in future periods depending upon future oil prices and the banks' pricing assumptions. The Bank Credit Facility is secured by a significant portion of our proved oil and natural gas properties.

Our Bank Credit Facility contains certain restrictive covenants, plus two principal financial performance covenants to maintain a ratio of consolidated total net debt to consolidated EBITDAX of not more than 4.25 to 1.0 and a current ratio of not less than 1.0 (all terms as defined in the bank credit agreement). For these financial performance covenant calculations as of December 31, 2014, our ratio of consolidated total net debt to consolidated EBITDAX was 2.52 to 1.0, and our current ratio was 2.45. Although we are currently in compliance with these financial performance covenants and project to be in compliance with the covenants through 2015 based on our current projections of production and current oil futures prices, if oil prices were to continue to decline or remain at low levels for an extended period of time, we may not be able to meet the consolidated total net debt to consolidated EBITDAX covenant in late 2015 or more likely in 2016. Failure to comply with this or other covenants could lead to a default under the Bank Credit Facility, requiring us to seek a waiver, renegotiate terms of the agreement or repay outstanding borrowings, although we believe it is likely that we could restructure our consolidated total net debt to consolidated EBITDAX covenant, if necessary, and/or receive a waiver for any default. See further discussion in Item 1A, Risk Factors.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Capital Expenditure Summary.  The following table summarizes our 2014, 2013 and 2012 capital expenditures incurred by project area, including accrued capital expenditures:

	Year Ended December 31,
In thousands	2014		2013		2012
Capital expenditures by project
Tertiary oil fields	$	629,790	$	534,878	$	449,226
Non-tertiary fields	240,187		224,556		543,162
Capitalized interest and internal costs (1)	89,716		114,197		93,663
Oil and natural gas capital expenditures	959,693		873,631		1,086,051
CO2 pipelines	45,672		57,136		181,873
CO2 sources (2)	56,460		163,710		238,613
CO2 capitalized interest and other	4,247		49,021		47,628
Capital expenditures, before acquisitions	1,066,072		1,143,498		1,554,165
Less: recoveries from sale/leaseback transactions	—		—		(35,102		)
Net capital expenditures, excluding acquisitions	1,066,072		1,143,498		1,519,063
Property acquisitions (3)	8,773		1,032,218		942,359
Capital expenditures, net of sale/leaseback transactions	$	1,074,845	$	2,175,716	$	2,461,422

(1) Includes capitalized internal acquisition, exploration and development costs; capitalized interest; and pre-production startup costs associated with new tertiary floods.

(2) Includes capital expenditures related to the Riley Ridge gas processing facility.

(3) Property acquisitions during the years ended December 31, 2013 and 2012 include capital expenditures of approximately $1.0 billion and $0.2 billion, respectively, related to acquisitions during the period that are not reflected as an Investing Activity on our Consolidated Statements of Cash Flows due to the movement of proceeds through a qualified intermediary to facilitate like-kind-exchange treatment under federal income tax rules. In addition, property acquisitions in 2012 shown above include capital expenditures of approximately $0.6 billion representing the aggregate fair value of net assets acquired, excluding cash, in the late-2012 sale and exchange transaction with Exxon Mobil Corporation and its wholly-owned subsidiary XTO Energy Inc. (the "Bakken Exchange Transaction"). See Note 2, Acquisition, to the Consolidated Financial Statements.

Our 2014 capital expenditures were fully funded with $1.2 billion of cash flow from operations. Our 2013 capital expenditures, other than those for property acquisitions, were funded with $1.4 billion of cash flow from operations, and those for property acquisitions were funded with proceeds from the Bakken Exchange Transaction. Our 2012 capital expenditures were funded primarily with $1.4 billion of cash flow from operations, and our property acquisitions were funded with proceeds from the sale of non-core assets and the Bakken Exchange Transaction.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Commitments and Obligations. A summary of our obligations at December 31, 2014, is presented in the following table:

	Payments Due by Period
In thousands	2015		2016 and 2017		2018 and 2019		Thereafter		Total
Contractual obligations
Bank Credit Agreement	$	—	$	—	$	395,000	$	—	$	395,000
Estimated interest payments on Bank Credit Facility and subordinated debt	161,268		322,145		321,159		398,417		1,202,989
Subordinated debt	485		2,250		—		2,850,000		2,852,735
Operating lease obligations	12,556		25,306		23,933		56,630		118,425
Pipeline and capital lease obligations	61,225		117,978		98,043		237,473		514,719
Other obligations (1)	73,905		190,763		185,467		658,284		1,108,419
Asset retirement obligations (2)	2,046		—		2,276		691,222		695,544
Total contractual obligations	$	311,485	$	658,442	$	1,025,878	$	4,892,026	$	6,887,831

(1) Represents future cash commitments under contracts in place as of December 31, 2014, primarily for purchase contracts for CO₂ captured from industrial sources, drilling rig services and well-related costs.  As is common in our industry, we commit to make certain expenditures on a regular basis as part of our ongoing development and exploration program.  These commitments generally relate to projects that occur during the subsequent several months and are usually part of our normal operating expenses or part of our capital budget (see 2015 Capital Spending above).  We also have recurring expenditures for such things as accounting, engineering and legal fees; software maintenance; subscriptions; and other overhead-type items.  Normally these expenditures do not change materially on an aggregate basis from year to year and are part of our general and administrative expenses.  We have not attempted to estimate the amounts of these types of recurring expenditures in this table, as most could be quickly canceled with regard to any specific vendor, even though the expense itself may be required for our ongoing normal operations. For further discussion of our long-term commitments to purchase CO₂, see Note 11, Commitments and Contingencies, to the Consolidated Financial Statements.

(2) Represents the estimated future asset retirement obligations on an undiscounted basis.  The present value of the discounted asset retirement obligation is $128.1 million, as determined under the Asset Retirement and Environmental Obligations topic of the Financial Accounting Standards Board Codification ("FASC"), and is further discussed in Note 3, Asset Retirement Obligations, to the Consolidated Financial Statements.

Off-Balance Sheet Arrangements. We have several operating leases relating to office space and other minor equipment leases.  At December 31, 2014, we had a total of $11.3 million of letters of credit outstanding under our Bank Credit Facility.  Additionally, we have obligations that are not currently recorded on our balance sheet relating to various obligations for development and exploratory expenditures that arise from our normal capital expenditure program or from other transactions common to our industry. These obligations are further described in Commitments and Obligations above. In addition, in order to recover our undeveloped proved reserves, we must also fund the associated future development costs estimated in our proved reserve reports.  For a further discussion of our future development costs, see Supplemental Oil and Natural Gas Disclosures (Unaudited) to the Consolidated Financial Statements.

FINANCIAL OVERVIEW OF TERTIARY OPERATIONS

As discussed in Item 1, Business and Properties – Oil and Natural Gas Operations – Enhanced Oil Recovery Overview above, our tertiary operations represent a significant portion of our overall operations and have become our primary strategic focus. The economics of a tertiary field and the related impact on our financial statements differ from a conventional oil and gas play and are explained further below.

While it is difficult to accurately forecast future production, we believe our tertiary recovery operations provide significant long-term production growth potential at reasonable rates of return, with relatively low risk. Our rate of return from our tertiary operations has generally been higher than our rate of return on traditional oil and gas operations. Generally, finding and development

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Management’s Discussion and Analysis of Financial Condition and Results of Operations

costs are lower and operating costs are higher than traditional oil and gas operations. We have been developing tertiary oil properties for over 15 years, and the financial impact of such operations is reflected in our historical financial statements. The summary below highlights our observations regarding how tertiary operations have impacted our financial statements.

Finding and Development Costs. We currently expect finding and development costs (including future development and abandonment costs but excluding CO₂ pipeline infrastructure capital expenditures) over the life of each field to be lower than the industry average costs for other oil properties. See the definition of finding and development costs in the Glossary and Selected Abbreviations.

Timing of Capital Costs.  There is a significant delay between the initial capital expenditures on tertiary oil fields and the resulting production increases.  We must build facilities, and often a CO₂ pipeline to the field, before CO₂ flooding can commence, and it usually takes six to twelve months before the field responds to the injection of CO₂ (i.e., oil production commences).  Further, we may spend significant amounts of capital before we can recognize any proved reserves from fields we flood and, even after a field has proved reserves, significant amounts of additional capital will usually be required to fully develop the field.

Recognition of Proved Reserves. In order to recognize proved tertiary oil reserves, we must either demonstrate production resulting from the tertiary process or the field must be analogous to an existing tertiary flood.  The magnitude of proved reserves that we can book in any given year will depend on our progress with new floods, the timing of the production response from new floods and the performance of our existing floods. Typically, a high percentage of the potential reserves for a tertiary field are recognized when a production response is initially observed, and generally only modest increases are made thereafter.

Production Rates. The production growth rate at a tertiary flood can vary from quarter to quarter, as a tertiary field's production may increase rapidly when wells respond to the CO₂, plateau temporarily, and then resume growth as additional areas of the field are developed.  During a tertiary flood life cycle, facility capacity is increased from time to time, which occasionally requires temporary shutdowns during installation, thereby causing temporary declines in production.  We also find it difficult to precisely predict when any given well will respond to the injected CO₂, as the CO₂ seldom travels through the rock consistently due to heterogeneity in the oil-bearing formations.  We find all of these fluctuations to be normal, and generally expect oil production at a tertiary field to increase over time until the field is fully developed, albeit sometimes in inconsistent patterns.  

Operating Costs. Tertiary projects may be more expensive to operate than traditional industry operations because of the cost of injecting and recycling the CO₂ (primarily due to the cost of the CO₂ and the significant energy requirements to re-compress the CO₂ back into a near-liquid state for re-injection purposes).  The costs of our CO₂ and the electricity required to recycle and inject this CO₂ comprise over half of our typical tertiary operating expenses.  Since these costs vary along with commodity and commercial electricity prices, they are highly variable and will increase in a high-commodity-price environment and decrease in a low-price environment.  Most of our CO₂ operating costs are allocated to our tertiary oil fields and recorded as lease operating expenses (following the commencement of tertiary oil production) at the time the CO₂ is injected. These costs have historically represented approximately 20% to 25% of the total operating costs for our tertiary operations.  Since we expense all of the operating costs to produce and inject our CO₂ (following the commencement of tertiary oil production), operating costs per barrel for a new flood will be higher at the inception of CO₂ injection projects because of minimal related oil production at that time.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

RESULTS OF OPERATIONS

Operating Results Table

Certain of our operating results and statistics for each of the last three years are included in the following table.

	Year Ended December 31,
In thousands, except per share and unit data	2014			2013			2012
Operating results
Net income	$	635,491		$	409,597		$	525,360
Net income per common share – basic	1.82			1.12			1.36
Net income per common share – diluted	1.81			1.11			1.35
Dividends declared per common share	0.25			—			—
Net cash provided by operating activities	1,222,825			1,361,195			1,410,891
Average daily production volumes
Bbls/d	70,606			66,286			66,837
Mcf/d	22,955			23,742			29,109
BOE/d	74,432			70,243			71,689
Operating revenues
Oil sales	$	2,338,367		$	2,435,625		$	2,377,337
Natural gas sales	34,106			30,609			32,530
Total oil and natural gas sales	$	2,372,473		$	2,466,234		$	2,409,867
Commodity derivative contracts (1)
Receipt (payment) on settlements of commodity derivatives	$	1,421		$	(662	)	$	17,880
Noncash fair value adjustments on commodity derivatives (2)	553,834			(40,362		)	(13,046		)
Commodity derivatives income (expense)	$	555,255		$	(41,024	)	$	4,834
Unit prices – excluding impact of derivative settlements
Oil price per Bbl	$	90.74		$	100.67		$	97.18
Natural gas price per Mcf	4.07			3.53			3.05
Unit prices – including impact of derivative settlements (1)
Oil price per Bbl	$	90.82		$	100.64		$	96.77
Natural gas price per Mcf	3.99			3.53			5.67
Oil and natural gas operating expenses
Lease operating expenses (3)	$	647,559		$	730,574		$	532,359
Marketing expenses, net of third-party purchases, and plant operating expenses	47,965			37,754			41,936
Production and ad valorem taxes	155,495			162,791			149,919
Oil and natural gas operating revenues and expenses per BOE
Oil and natural gas revenues	$	87.33		$	96.19		$	91.85
Lease operating expenses (3)	23.84			28.50			20.29
Marketing expenses, net of third-party purchases, and plant operating expenses	1.76			1.47			1.60
Production and ad valorem taxes	5.72			6.35			5.71
CO2 sources and helium – revenues and expenses
CO2 and helium sales and transportation fees	$	44,643		$	27,950		$	26,453
CO2 and helium discovery and operating expenses (4)	(25,222		)	(16,916		)	(14,694		)
CO2 and helium revenue and expenses, net	$	19,421		$	11,034		$	11,759

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(1) See also Commodity Derivative Contracts below and Market Risk Management for information concerning our commodity derivative transactions.

(2) Noncash fair value adjustments on commodity derivatives is a non-GAAP measure and is different from "Commodity derivatives expense (income)" in the Consolidated Statements of Operations in that the noncash fair value adjustments on commodity derivatives represent only the net change between periods of the fair market values of commodity derivative positions, and exclude the impact of settlements on commodity derivatives during the period, which were receipts (payments) on settlements of $1.4 million, ($0.7 million) and $17.9 million for the years ended December 31, 2014, 2013 and 2012, respectively. We believe that noncash fair value adjustments on commodity derivatives is a useful supplemental disclosure to "Commodity derivatives expense (income)" in order to differentiate noncash fair market value adjustments from settlements on commodity derivatives during the period. This supplemental disclosure is widely used within the industry and by securities analysts, banks and credit rating agencies in calculating EBITDA and in adjusting net income to present those measures on a comparative basis across companies, as well as to assess compliance with certain debt covenants. Noncash fair value adjustments on commodity derivatives is not a measure of financial or operating performance under GAAP, nor should it be considered in isolation or as a substitute for "Commodity derivatives expense (income)" in the Consolidated Statements of Operations. See also the Glossary and Selected Abbreviations for the definition of noncash fair value adjustments on commodity derivatives.

(3) If lease operating expenses and related insurance recoveries recorded to remediate an area of Delhi Field were excluded, lease operating expenses would have totaled $654.7 million and $616.6 million for the years ended December 31, 2014 and 2013, respectively, and lease operating expenses per BOE would have averaged $24.10 and $24.05 for the years ended December 31, 2014 and 2013, respectively (see Capital Resourcesand Liquidity – Insurance Recoveries to Cover Costs of 2013 Delhi Field Release above).

(4) Includes $0.8 million and $9.5 million of exploratory costs incurred for the years ended December 31, 2013 and 2012, respectively. We incurred no exploratory costs for the year ended December 31, 2014.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Production

Average daily production by area for 2014, 2013 and 2012, and for each of the quarters of 2014, is shown below:

	Average Daily Production (BOE/d)
	2014 Quarters				Year Ended December 31,
Operating Area	First Quarter	Second Quarter	Third Quarter	Fourth Quarter	2014	2013	2012
Tertiary oil production
Gulf Coast region
Mature properties
Brookhaven	1,877	1,818	1,767	1,579	1,759	2,223	2,692
Eucutta	2,181	2,150	2,224	1,995	2,137	2,514	2,868
Mallalieu	1,837	1,839	1,869	1,653	1,799	2,050	2,338
Other mature properties (1)	6,283	6,156	6,189	5,864	6,122	7,016	7,707
Total mature properties	12,178	11,963	12,049	11,091	11,817	13,803	15,605
Delhi (2)	4,708	4,543	4,377	3,743	4,340	5,149	4,315
Hastings	4,618	4,759	4,917	4,811	4,777	3,984	2,188
Heidelberg	5,325	5,609	5,721	6,164	5,707	4,466	3,763
Oyster Bayou	4,055	4,415	4,605	5,638	4,683	2,968	1,388
Tinsley	8,430	8,518	8,310	8,767	8,507	8,051	7,947
Total Gulf Coast region	39,314	39,807	39,979	40,214	39,831	38,421	35,206
Rocky Mountain region
Bell Creek	578	1,090	1,648	1,659	1,248	56	—
Total Rocky Mountain region	578	1,090	1,648	1,659	1,248	56	—
Total tertiary oil production	39,892	40,897	41,627	41,873	41,079	38,477	35,206
Non-tertiary oil and gas production
Gulf Coast region
Mississippi	2,513	2,319	2,346	2,099	2,318	2,695	3,930
Texas	6,444	6,508	5,537	6,677	6,290	6,540	4,737
Other	1,031	1,049	1,083	1,082	1,061	1,097	1,235
Total Gulf Coast region	9,988	9,876	8,966	9,858	9,669	10,332	9,902
Rocky Mountain region
Cedar Creek Anticline (3)	19,007	19,155	18,623	18,553	18,834	16,572	8,503
Other	4,831	5,392	4,594	4,591	4,850	4,862	3,231
Total Rocky Mountain region	23,838	24,547	23,217	23,144	23,684	21,434	11,734
Total non-tertiary production	33,826	34,423	32,183	33,002	33,353	31,766	21,636
Total continuing production	73,718	75,320	73,810	74,875	74,432	70,243	56,842
Properties disposed
Bakken area assets (4)	—	—	—	—	—	—	14,395
2012 non-core assets divestitures (5)	—	—	—	—	—	—	452
Total production	73,718	75,320	73,810	74,875	74,432	70,243	71,689

(1) Other mature properties include Cranfield, Little Creek, Lockhart Crossing, Martinville, McComb and Soso fields.

(2) The average daily Delhi Field production amounts for the fourth quarter of 2014 reflect the reversionary assignment of approximately 25% of our interest in that field effective November 1, 2014. The effectiveness, timing, and scope of the reversionary assignment are subject to ongoing litigation, the ultimate outcome of which cannot be predicted.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations

(3) Beginning March 27, 2013, amounts include production from our purchase of additional interests in the CCA on that date.

(4) Includes production from certain Bakken area assets sold in the fourth quarter of 2012.

(5) Includes production from certain non-core Gulf Coast assets sold in late February 2012 and certain non-operated assets in the Greater Aneth Field in the Paradox Basin of Utah sold in April 2012.

Total Production

Total production during 2014 averaged 74,432 BOE/d, an increase of 4,189 BOE/d (6%) compared to 2013 levels, due primarily to a 2,602 Bbl/d (7%) production increase from our tertiary oil fields in 2014 and our receiving only nine months of production in 2013 from the purchase of additional interests in CCA in late March 2013, partially offset by a decrease of 663 BOE/d in our Gulf Coast non-tertiary production.

Total production during 2013 averaged 70,243 BOE/d, a decrease of 1,446 BOE/d (2%) compared to 2012 levels, primarily due to the inclusion in 2012 of 11 months of production from our Bakken area assets (which were sold late in the fourth quarter of 2012), compared to the inclusion of only nine months of additional CCA production in our 2013 results. This decline in production due to timing of transactions was partially offset by a 9% increase in tertiary production in 2013.

Our production during 2014 was 95% oil compared to 94% for 2013 and 93% for 2012.

Tertiary Production

Oil production from our tertiary operations increased to record levels during 2014, averaging 41,079 Bbls/d, a 7%increase over our 2013 tertiary production level of 38,477 Bbls/d, primarily due to production growth in response to continued field development and expansion of facilities in our tertiary floods at Hastings, Heidelberg, Oyster Bayou, and Tinsley fields in our Gulf Coast region, and Bell Creek Field in our Rocky Mountain region. Partially offsetting these 2014 production gains were production declines in our mature tertiary fields, as well as declines at Delhi Field due to the mid-2013 incident (see Note 11, Commitments and Contingencies, to the Consolidated Financial Statements for further discussion), which slowed our development activities at Delhi Field, and the November 1, 2014, reduction in our Delhi Field interest due to the contractual reversionary assignment of approximately 25% of our interest to the seller of the field, the effectiveness, timing, and scope of which are subject to ongoing litigation.

Our fourth quarter of 2014 tertiary oil production, compared to that in the third quarter of 2014, increased slightly despite the Delhi reversionary interest assignment that reduced our fourth quarter production by approximately 750 Bbls/d. We had significant increases in fourth quarter tertiary oil production at Oyster Bayou Field (1,033 Bbls/d), Tinsley Field (457 Bbls/d) and Heidelberg Field (443 Bbls/d), which more than offset the Delhi decrease and the approximate 960 Bbl/d decrease in our mature tertiary floods. Although we have experienced appreciable production increases at Oyster Bayou and Tinsley fields during both the full year and fourth quarter of 2014, we anticipate that (1) our production at Tinsley Field has peaked and will likely start to decline sometime during 2015, and (2) our production at Oyster Bayou Field will begin to plateau in 2015. Also, with our significant reduction in capital spending in 2015, we are expecting overall production for 2015 to be relatively flat with, or slightly lower than, 2014 levels, and unless we are able to increase our capital spending in the near future, it is likely that our production levels will start to decline more significantly beginning in 2016.

Oil production from our tertiary operations during 2013 averaged 38,477 Bbls/d, a 9%increase over our 2012 tertiary production level of 35,206 Bbls/d, primarily due to production growth in 2013 in response to continued field development and expansion of facilities in our tertiary floods at Delhi, Hastings, Heidelberg, and Oyster Bayou fields.  Offsetting these 2013 production gains were production declines in our more mature tertiary fields.

Non-Tertiary Production

Production from our non-tertiary operations averaged 33,353 BOE/d during 2014, an increase of 1,587 BOE/d (5%) compared to 2013 levels. The non-tertiary production increase was primarily due to the additional three months of production in 2014 from the purchase of additional interests in the CCA in late March 2013. When comparing 2013 to 2012, continuing production from our non-tertiary operations, which excludes production from our Bakken and other non-core assets divested during 2012, increased

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to an average of 31,766 BOE/d, an increase of 10,130 BOE/d (47%) from 2012 continuing production levels. The non-tertiary continuing production increase was primarily due to production from newly acquired fields, specifically the additional interests in CCA acquired in March 2013, Webster and Hartzog Draw fields acquired in the Bakken Exchange Transaction in late 2012, and Thompson Field acquired in June 2012. With the exception of the impact of the production added from fields acquired during 2012 and 2013 and anticipated increases in production at CCA due to infill drilling and optimization work, production from our other non-tertiary properties is generally on decline. In addition, the decline is pronounced in some instances when non-tertiary wells are shut in as part of an initiation or expansion of our tertiary floods in a field or an area of a field.

Oil and Natural Gas Revenues

Oil and natural gas revenues decreased 4% between 2013 and 2014 and increased 2% between 2012 and 2013. The changes in our oil and natural gas revenues are due to changes in production quantities and commodity prices (excluding any impact of our commodity derivative contracts) as reflected in the following table:

	Year Ended December 31, 2014 vs. 2013					Year Ended December 31, 2013 vs. 2012
In thousands	Increase (Decrease) in Revenues			Percentage Increase (Decrease) in Revenues		Increase (Decrease) in Revenues			Percentage Increase (Decrease) in Revenues
Change in oil and natural gas revenues due to:
Increase (decrease) in production	$	147,093		6	%	$	(55,065	)	(2	)%
Increase (decrease) in commodity prices	(240,854		)	(10	)%	111,432			4	%
Total increase (decrease) in oil and natural gas revenues	$	(93,761	)	(4	)%	$	56,367		2	%

Excluding any impact of our commodity derivative contracts, our net realized commodity prices and NYMEX differentials were as follows during 2014, 2013 and 2012:

	Year Ended December 31,
	2014			2013			2012
Net realized prices
Oil price per Bbl	$	90.74		$	100.67		$	97.18
Natural gas price per Mcf	4.07			3.53			3.05
Price per BOE	87.33			96.19			91.85
NYMEX differentials
Oil per Bbl	$	(2.21	)	$	2.62		$	2.99
Natural gas per Mcf	(0.20		)	(0.19		)	0.23

As reflected in the table above, our average net realized oil price, excluding the impact of commodity derivative contracts, decreased 10% during 2014 compared to the average price received during 2013. Company-wide average oil price differentials were $2.21 per Bbl below NYMEX in 2014, compared to an average differential of $2.62 per Bbl above NYMEX in 2013 (a $4.83 per Bbl decrease) and $2.99 per Bbl above NYMEX in 2012. During 2014, we sold approximately 43% of our crude oil at prices based on the LLS index price, approximately 23% at prices partially tied to the LLS index price, and the balance at prices based on various other indexes tied to NYMEX prices, primarily in the Rocky Mountain region. The net differential we received was primarily impacted by positive differentials in the Gulf Coast region, offset by unfavorable differentials in the Rocky Mountain region, each of which is discussed in further detail below.

We received favorable NYMEX differentials in the Gulf Coast region during 2014, 2013 and 2012, primarily due to the favorable differential for crude oil sold under LLS index prices. During 2014, the quarterly average LLS-to-NYMEX differential (on a trade-month basis) decreased from a positive $6.06 per Bbl in the first quarter of 2014 to a positive $3.16 per Bbl in the

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fourth quarter of 2014, with the most recent quarter being more representative of longer-term historical differentials. The LLS-to-NYMEX differential (on a trade-month basis) averaged $11.10 per Bbl and $16.44 per Bbl in 2013 and 2012, respectively.

NYMEX oil differentials in the Rocky Mountain region averaged $10.19 per Bbl below NYMEX during 2014 compared to an average differential of $8.10 per Bbl below NYMEX in 2013 and $11.86 per Bbl below NYMEX in 2012. Differentials in the Rocky Mountain region can move significantly over short periods of time due to refinery and transportation issues, but generally have become more stable over the last couple of years as infrastructure and takeaway capacity has improved in the area. The change in the differential between 2012 and 2013 was largely impacted by the sale of our Bakken area assets in the fourth quarter of 2012, since oil from the Bakken area assets generally sold at a higher discount to NYMEX than the CCA production acquired in early 2013.

Prices received in a regional market fluctuate frequently and can differ from NYMEX pricing due to a variety of reasons, including supply and/or demand factors and location differentials. Although the LLS and Rocky Mountain differentials improved somewhat in 2014 compared to the levels in the fourth quarter of 2013, we do not expect the LLS-to-NYMEX differential in the Gulf Coast region to return to the significantly elevated levels we experienced during most of 2013 and 2012.

Our natural gas NYMEX differentials are generally caused by movement in the NYMEX natural gas prices during the month, as most of our natural gas is sold on an index price that is set near the first of each month.  While the percentage change in NYMEX natural gas differentials can be quite large, the absolute impact of these changes on our results has historically been minor, as natural gas sales represented only approximately 1% of our oil and natural gas revenues during 2014.

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Management’s Discussion and Analysis of Financial Condition and Results of Operations

Commodity Derivative Contracts

From time to time, we enter into oil and natural gas derivative contracts to provide an economic hedge of our exposure to commodity price risk associated with anticipated future oil and natural gas production.  These contracts have historically consisted of price floors, collars, three-way collars, fixed-price swaps, and fixed-price swaps enhanced with a sold put. The following table summarizes the impact our oil and natural gas derivative contracts had on our operating results for 2014, 2013 and 2012:

	Noncash Fair Value Gain/(Loss) (1)									Receipt/(Payment) on Settlements
In thousands	2014			2013			2012			2014			2013			2012
Crude oil derivative contracts
First quarter	$	(48,854	)	$	(11,929	)	$	(42,445	)	$	(26,559	)	$	—		$	(8,230	)
Second quarter	(124,865		)	45,501			140,923			(49,895		)	—			(709		)
Third quarter	276,240			(79,784		)	(60,726		)	(25,016		)	(662		)	(641		)
Fourth quarter	448,365			5,854			(26,848		)	103,555			—			(411		)
Full Year	$	550,886		$	(40,358	)	$	10,904		$	2,085		$	(662	)	$	(9,991	)
Natural gas derivative contracts
First quarter	$	(646	)	$	—		$	(1,640	)	$	(610	)	$	—		$	7,040
Second quarter	266			—			(9,096		)	(277		)	—			7,991
Third quarter	939			—			(7,174		)	102			—			6,910
Fourth quarter	2,389			(4		)	(6,040		)	121			—			5,930
Full Year	$	2,948		$	(4	)	$	(23,950	)	$	(664	)	$	—		$	27,871
Total commodity derivative contracts
First quarter	$	(49,500	)	$	(11,929	)	$	(44,085	)	$	(27,169	)	$	—		$	(1,190	)
Second quarter	(124,599		)	45,501			131,827			(50,172		)	—			7,282
Third quarter	277,179			(79,784		)	(67,900		)	(24,914		)	(662		)	6,269
Fourth quarter	450,754			5,850			(32,888		)	103,676			—			5,519
Full Year	$	553,834		$	(40,362	)	$	(13,046	)	$	1,421		$	(662	)	$	17,880

(1) Noncash fair value adjustments on commodity derivatives is a non-GAAP measure. See Operating Results Table above for a discussion of the reconciliation between noncash fair value adjustments on commodity derivatives to "Commodity derivatives expense (income)" in the Consolidated Financial Statements. See also the Glossary and Selected Abbreviations for the definition of noncash fair value adjustments on commodity derivatives.

During 2014, in order to provide greater certainty to the range of our anticipated operating cash flows as we transitioned to a dividend-paying company, we utilized more fixed-price swaps than we have historically. Prior to 2014, most of our derivative contracts were collars that had a floor and ceiling price that provided price protection at a lower level, but also a wider range of variability in operating cash flows than if we had used fixed-price swap contracts. For 2015, we have entered into a combination of enhanced swaps, collars, and three-way collars covering a total of 58,000 Bbls/d for the first three quarters of 2015 and 38,000 Bbls/d for the fourth quarter of 2015. Roughly half of these 2015 derivative contracts are collars and three-way collars, so the variability in potential cash flows from these types of hedges exposes us to more downside price risk than our 2014 fixed-price swaps. These 2015 collars and three-way collars, which include both NYMEX and LLS hedges, have a weighted average floor of approximately $82 per Bbl (approximately $81 per Bbl and $86 per Bbl for NYMEX and LLS hedges, respectively) and a weighted average ceiling price of approximately $97 per Bbl (approximately $96 per Bbl and $101 per Bbl for NYMEX and LLS hedges, respectively). Our three-way collars and enhanced swaps all include sold puts that have a weighted average price of approximately $67 per Bbl. The sold puts for our three-way collars and enhanced swaps limit the benefit that our hedges provide

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

us to the extent that oil prices fall below the price of our sold puts. Likewise, our 2016 commodity derivative contracts all include sold puts, similarly limiting our potential cash flows from these instruments to the extent that oil prices are below the prices of our sold puts.

Changes in commodity prices and the expiration of contracts cause fluctuations in the estimated fair value of our oil and natural gas derivative contracts.  Because we do not utilize hedge accounting for our commodity derivative contracts, the period-to-period changes in the fair value of these contracts, as outlined above, are recognized in our statements of operations. The details of our outstanding commodity derivative contracts at December 31, 2014, are included in Note 9, Commodity Derivative Contracts, to the Consolidated Financial Statements.

Production Expenses

Lease operating expense

	Year Ended December 31,
In thousands, except per BOE data	2014			2013		2012
Lease operating expense
Tertiary – excluding Delhi Field remediation	$	385,080		$	358,281	$	307,686
Tertiary – Delhi Field remediation	(7,134		)	114,000		—
Non-tertiary	269,613			258,293		224,673
Total lease operating expense	$	647,559		$	730,574	$	532,359
Lease operating expense per BOE
Tertiary – excluding Delhi Field remediation	$	25.68		$	25.51	$	23.88
Tertiary – Delhi Field remediation	(0.47		)	8.12		—
Non-tertiary	22.15			22.28		16.83
Total lease operating expense per BOE (1)	23.84			28.50		20.29

(1) Excluding estimated costs and related insurance recoveries recorded to remediate an area of Delhi Field, total operating expense per BOE averaged $24.10 and $24.05 during the years ended December 31, 2014 and 2013, respectively. See Capital Resources and Liquidity – Insurance Recoveries to Cover Costs of 2013 Delhi Field Release and Note 11, Commitments and Contingencies, to the Consolidated Financial Statements for further discussion of this matter.

Total lease operating expenses decreased $83.0 million (11%) on an absolute-dollar basis or $4.66 (16%) on a per-BOE basis during 2014 compared to 2013 levels, primarily due to Delhi remediation charges of $114.0 million during 2013, compared to a net reduction of lease operating expenses of $7.1 million in 2014 (see Capital Resources and Liquidity – Insurance Recoveries to Cover Costs of 2013 Delhi Field Release and Note 11, Commitments and Contingencies, to the Consolidated Financial Statements for further discussion of the Delhi remediation costs and insurance reimbursements). Excluding Delhi Field remediation costs and insurance reimbursements, total lease operating expenses increased $38.1 million (6%) on an absolute-dollar basis or $0.05 on a per-BOE basis during 2014 compared to 2013 levels, due primarily to (1) costs associated with expansion of tertiary floods, including a full year of lease operating expense at Bell Creek Field which increased our operating expenses by approximately $19 million from 2013 levels, (2) a full year of operating expenses associated with our acquisition of additional interests in CCA in late March 2013 as compared to only approximately nine months of expenses associated with our additional interests in CCA in 2013, which increased operating expense by approximately $10 million, (3) higher power costs in 2014 due in part to higher natural gas prices, and (4) the impact of a large unplanned well workover at Riley Ridge, which increased operating expenses by approximately $12 million in 2014. Offsetting some of these increases were savings associated with our more efficient utilization of CO₂, which allowed us to reduce injections at some of our fields and lower workover costs across many of our fields, which was a primary focus for us in 2014. On a quarterly basis, excluding Delhi remediation costs and insurance reimbursements and unplanned Riley Ridge well workovers, our lease operating expense per BOE decreased each sequential quarter in 2014 and decreased a total of 14% between the fourth quarter of 2013 and the fourth quarter of 2014, due largely to lower workover costs.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Lease operating expense increased $198.2 million (37%) on an absolute-dollar basis or $8.21 (40%) on a per-BOE basis during 2013 compared to 2012 levels, primarily due to the Delhi remediation charges of $114.0 million during 2013. Excluding these remediation charges, lease operating expenses increased $84.2 million (16%) or $3.76 per BOE during 2013 compared to 2012 levels, due primarily to increased expenses resulting from the expansion of our tertiary floods, including our tertiary flood at Bell Creek Field; increases in the cost and utilization of CO₂ between the comparative periods; and higher lease operating expenses at the fields we acquired in the Bakken Exchange Transaction relative to the Bakken assets we sold late in the fourth quarter of 2012.

Tertiary lease operating expenses decreased $94.3 million (20%) on an absolute-dollar basis or $8.42 (25%) on a per-Bbl basis during 2014 compared to 2013 levels, primarily due to the Delhi remediation charges noted above. Excluding Delhi remediation costs and insurance reimbursements, tertiary lease operating expenses increased $26.8 million (7%) on an absolute-dollar basis and $0.17 on a per-Bbl basis during 2014 compared to 2013 levels, due primarily to additional costs associated with our newest tertiary flood at Bell Creek Field which had initial production and operating expense in the third quarter of 2013, as well as its production being low relative to operating costs because production is still ramping up, resulting in high per-barrel operating costs, which is typical when we startup a new tertiary flood. The increase between periods is further impacted by higher power costs due to higher rates and usage during 2014. Although there was an overall increase in the cost of CO₂ due to our newest tertiary flood at Bell Creek Field in the Rocky Mountain region, CO₂ utilization in the Gulf Coast region decreased between 2013 and 2014 as a result of improved efficiency and utilization of CO₂ for those fields. During 2013, tertiary lease operating expense, excluding Delhi remediation costs and insurance reimbursements, increased $50.6 million (16%) on an absolute-dollar basis or $1.63 on a per-Bbl basis compared to 2012, primarily as a result of the expansion of our tertiary floods and increased CO₂ expenses due to increases in the cost of CO₂ and an increase in CO₂ volumes injected into tertiary floods between years. For any specific field, we expect our tertiary lease operating expense per barrel to be high initially, as we experienced in 2013 and 2014 with our Bell Creek flood, and then decrease as production increases, ultimately leveling off until production begins to decline in the later life of the field, when operating expense per barrel will again increase. One of our most substantial costs in our tertiary operations is our cost for fuel and utilities, averaging $7.46 per Bbl in 2014, $6.64 per Bbl in 2013 and $6.51 per Bbl in 2012, which has increased on a per-barrel basis due to the higher cost of these items and the continued expansion of our tertiary floods.

Currently, our CO₂ expense comprises approximately one-fourth of our typical tertiary lease operating expenses, and for the CO₂ reserves we already own, consists of our CO₂ production expenses, and for the CO₂ reserves we do not own, consists of our purchase of CO₂ from royalty and working interest owners and industrialsources. During the year ended December 31, 2014, approximately 65% of the CO₂ utilized in our CO₂ floods consisted of CO₂ owned and produced by us, and we purchased the remaining portion from third-party owners (primarily royalty owners). The price we pay others for CO₂ varies by source and is generally indexed to oil prices. When combining the production cost of the CO₂ we own with what we pay third parties for CO₂, our average cost of CO₂ during 2014 was approximately $0.37 per Mcf, including taxes paid on CO₂ production but excluding depletion and depreciation of capital. This rate during 2014 was higher than the $0.36 per Mcf comparable measure during 2013 and $0.26 per Mcf spent during 2012, primarily due to fluctuations in pricing of our Rocky Mountain region CO₂ and increased volumes purchased from industrial sources during 2014. Including the cost of depreciation and amortization of capital expended at our CO₂ source fields and industrial sources, but excluding depreciation of our CO₂ pipelines, our cost of CO₂ was $0.48 per Mcf in 2014, $0.44 per Mcf in 2013 and $0.33 per Mcf in 2012.

Non-tertiary lease operating expenses increased$11.3 million (4%) on an absolute-dollar basis during 2014 compared to 2013 levels, primarily due to workover costs at Riley Ridge of approximately $12 million, as well as our late-March 2013 purchase of additional interests in CCA, which caused an increase in costs, but which properties generally have a lower operating cost on a per-BOE basis than our other non-tertiary properties. Non-tertiary lease operating expenses increased 15% on an absolute-dollar basis from 2012 to 2013, as declines resulting from the sale of our Bakken area assets were more than offset by increases in newly acquired fields, including Thompson field acquired in the second quarter of 2012, Webster and Hartzog Draw fields acquired in the Bakken Exchange Transaction in late 2012, and additional interests in CCA acquired in the first quarter of 2013. On a per-BOE basis, non-tertiary lease operating expense increased32% from 2012 to 2013 due to increases in newly acquired fields, which have a higher per-BOE operating cost than the properties disposed in the Bakken Exchange Transaction.

Marketing and plant operating expenses

Marketing and plant operating expenses primarily consist of amounts incurred related to the marketing, processing, and transportation of oil and natural gas production, as well as expenses related to our Riley Ridge gas processing facility. Marketing

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Management’s Discussion and Analysis of Financial Condition and Results of Operations

and plant operating expenses increased$15.1 million between 2013 and 2014 and decreased$3.6 million between 2012 and 2013. The increase during 2014 is primarily related to the Riley Ridge gas processing facility, which was placed into service in the fourth quarter of 2013, slightly offset by other decreases.

Taxes other than income

Taxes other than income includes ad valorem, production and franchise taxes. Taxes other than income decreased$6.5 million between 2013 and 2014 and increased$16.2 million between 2012 and 2013. The levels of taxes other than income during most periods are generally aligned with fluctuations in oil and natural gas revenues. The decrease during 2014 is also impacted by cumulative reductions in severance taxes during 2014 at Hastings Field ($7.5 million) and Oyster Bayou Field ($7.4 million) for state-approved enhanced oil recovery project exemptions, which will also reduce severance taxes for those fields for approximately the next seven years, but to a much lesser degree on an annual basis, as these state-approved exemptions were carried back to certain prior years, with the full impact recorded in 2014. The changes are further impacted by the change in the mix of properties subject to production and ad valorem taxes as a result of the Bakken Exchange Transaction in late 2012 and the CCA acquisition in March 2013.

General and Administrative Expenses ("G&A")

	Year Ended December 31,
In thousands, except per BOE data and employees	2014			2013			2012
Gross cash compensation and administrative costs	$	352,651		$	324,580		$	296,696
Gross stock-based compensation	39,532			42,091			37,897
Operator labor and overhead recovery charges	(171,661		)	(166,012		)	(141,358		)
Capitalized exploration and development costs	(62,179		)	(55,448		)	(49,216		)
Net G&A expense	$	158,343		$	145,211		$	144,019
G&A per BOE
Net administrative costs	$	4.81		$	4.47		$	4.48
Net stock-based compensation	1.02			1.19			1.01
Net G&A expense	$	5.83		$	5.66		$	5.49
Employees as of December 31	1,523			1,501			1,432

Gross cash compensation and administrative costs on an absolute-dollar basis increased $28.1 million (9%) between 2013 and 2014 and $27.9 million (9%) between 2012 and 2013.  The increase in both comparative periods is due primarily to higher compensation-related costs from increases in headcount and wage increases we consider necessary to remain competitive in our industry, insurance, and professional services. The increase during 2014 was further impacted by the 2013 period including a $1.9 million insurance reimbursement.

Net G&A expense on a per-BOE basis increased 3% between 2013 and 2014 and 3% between 2012 and 2013. The increase between both comparative periods was primarily due to higher compensation-related costs, partially offset by an increase in operator labor and overhead recovery charges and capitalized exploration and development costs. The 2014 period was further impacted by an increase in production in 2014 and the 2013 period including a $1.9 million insurance reimbursement.

Gross stock-based compensation costs decreased in 2014 compared to 2013, primarily due to a shift in the mix of long-term incentive compensation for employees. Gross stock-based compensation increased in 2013 compared to 2012 due to the increased number of employees during 2013 compared to 2012. Stock-based compensation, net of amounts capitalized or reclassified to field operations, was $27.8 million, $30.4 million and $26.5 million during the years ended December 31, 2014, 2013 and 2012, respectively.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Our well operating agreements allow us, when we are the operator, to charge a well with a specified overhead rate during the drilling phase and also to charge a monthly fixed overhead rate for each producing well.  In addition, salaries associated with field personnel are initially recorded as gross cash compensation and administrative costs and subsequently reclassified to lease operating expenses or capitalized to field development costs to the extent those individuals are dedicated to oil and natural gas production, exploration, and development activities.  As a result of additional operated wells, increased compensation expense and an increase in the COPAS overhead rate, the amount we recovered as operator labor and overhead recovery charges increased3% between 2013 and 2014, and 17% between 2012 and 2013.  Capitalized exploration and development costs also increased between the periods, primarily due to increased compensation costs subject to capitalization.

Interest and Financing Expenses

	Year Ended December 31,
In thousands, except per BOE data and interest rates	2014			2013			2012
Cash interest expense	$	193,729		$	205,938		$	216,205
Noncash interest expense	13,476			14,024			14,808
Less: Capitalized interest	(24,202		)	(79,253		)	(77,432		)
Interest expense, net	$	183,003		$	140,709		$	153,581
Interest expense, net per BOE	$	6.74		$	5.49		$	5.85
Average debt outstanding	$	3,597,646		$	3,257,686		$	2,935,485
Average interest rate (1)	5.4		%	6.3		%	7.4		%

(1) Includes commitment fees but excludes debt issue costs and amortization of discount or premium.

As reflected in the table above, our average interest rate decreased each year in the period between 2012 and 2014.  The lower rate in 2014 includes the impact of our April 2014 long-term debt refinancing, whereby we issued $1.25 billion of 5½% Notes to replace our $996.3 million of 8¼% Notes (see Overview – April 2014 Debt Refinancing above). The lower rates in 2014 and 2013 further reflect our refinancing in February 2013 of certain senior subordinated notes, which had interest rates of 9½% and 9¾%, with our 4⅝% Senior Subordinated Notes due 2023. In conjunction with these two refinancing transactions, we estimate that we will save approximately $60 million annually in cash interest expense on the principal amount of the refinanced notes; however, our savings will be partially offset by the incremental principal amount of the newly issued senior subordinated notes, some of which was used to repay lower rate bank debt. Although our cash interest costs are lower, as a result of completing major projects on which we had been previously capitalizing interest, specifically the Riley Ridge gas processing facility, Greencore Pipeline and the tertiary flood at Bell Creek Field, our capitalized interest during 2014 decreased significantly, contributing to an increase in net interest expense of $42.3 million (30%) between 2013 and 2014.

Interest expense, net decreased8% between 2012 and 2013, largely due to a lower average interest rate and higher capitalized interest, partially offset by higher average debt outstanding.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Depletion, Depreciation, and Amortization ("DD&A")

	Year Ended December 31,
In thousands, except per BOE data	2014		2013		2012
Depletion and depreciation of oil and natural gas properties	$	460,726	$	392,603	$	420,094
Depletion and depreciation of CO2 properties	30,986		27,783		23,843
Asset retirement obligations	8,870		8,450		7,228
Depreciation of pipelines, plants and other property and equipment	92,390		81,107		56,373
Total DD&A	$	592,972	$	509,943	$	507,538
DD&A per BOE
Oil and natural gas properties	$	17.29	$	15.64	$	16.28
CO2 properties, pipelines, plants and other property and equipment	4.54		4.25		3.06
Total DD&A expense per BOE	$	21.83	$	19.89	$	19.34

We adjust our DD&A rate each quarter for significant changes in our estimates of oil and natural gas reserves and costs. In addition, under full cost accounting rules, the divestiture of oil and natural gas properties generally does not result in gain or loss recognition; instead, the proceeds of the disposition reduce the full cost pool. As such, our DD&A rate has changed significantly over time, and it may continue to change in the future.  Depletion and depreciation of oil and natural gas properties and asset retirement obligations increased17% on an absolute-dollar basis between 2013 and 2014. The increase on an absolute-dollar basis was due to both higher production volumes and a higher depletion rate per BOE compared to 2013. The DD&A rate per BOE for oil and natural gas properties increased 11% in 2014, compared to levels in 2013, primarily due to the recognition in late 2013 of proved reserves at Bell Creek Field and the related reclassification of costs from unevaluated to evaluated, and higher average forecasted future development costs throughout the year. Our depletion and depreciation rate of oil and natural gas properties increased to $18.17 per BOE for the fourth quarter of 2014, primarily the result of additional capitalized costs from current-year capital expenditures and lower year-end proved reserve volumes.

Depletion and depreciation of oil and natural gas properties and asset retirement obligations decreased6% on an absolute-dollar basis and 4% on a per-BOE basis between 2012 and 2013. These decreases were primarily due to the Bakken Exchange Transaction in late 2012, which resulted in a decrease in capitalized costs relating to the sales proceeds credited to the full cost pool and a significant reduction in future development costs relating to the sold proved reserves, partially offset by the reduction in total proved reserves. This decrease in DD&A was partially offset by the impact of the CCA acquisition in the first quarter of 2013 and the movement of Bell Creek reserves from unevaluated to proved reserves during the fourth quarter of 2013.

Depletion and depreciation of our CO₂ properties, pipelines, plants and other property and equipment increased on an absolute-dollar and per-BOE basis during 2014 from 2013 levels, primarily due to the startup of the Riley Ridge gas processing facility in late 2013 and additional pipelines and CO₂ properties placed in service. Depletion and depreciation of our CO₂ properties, pipelines, plants and other property and equipment increased on an absolute-dollar and per-BOE basis in 2013 compared to 2012 due to an increase in CO₂ properties, pipelines and plants subject to depreciation as a result of continued development. The increase on a per-BOE basis in 2013 was further impacted by lower oil and natural gas production during 2013.

Under full cost accounting rules, we are required each quarter to perform a ceiling test calculation.  Under these rules, the full cost ceiling value is calculated using the average first-day of the month oil and natural gas price for each month during a 12-month rolling period ended as of each quarterly reporting period.  We did not have a ceiling test write-down during 2014, 2013 or 2012. The representative oil and natural gas prices used to calculate the December 31, 2014, full cost ceiling value were $94.99 per Bbl for crude oil and $4.30 per MMBtu for natural gas, both of which were adjusted for market differentials by field. This prescribed methodology does not reflect significant crude oil price declines in late 2014 and early 2015, when oil prices dropped rapidly, declining to below $45 per Bbl in January 2015. If oil prices were to remain at or near these late 2014 and early 2015 levels in subsequent periods, we would likely begin recording write-downs due to the full cost pool ceiling test in either the first or second quarter of 2015, and also in subsequent quarterly periods if prices remain low, as the 12-month average price used in the full cost

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

ceiling value would continue to decline during each rolling quarterly period in 2015.  The possibility and amount of any future write-down or impairment is difficult to predict, and will depend, in part, upon oil and natural gas prices, the incremental proved reserves that may be added each period, revisions to previous reserve estimates and future capital expenditures and operating costs. See Item 1A, Risk Factors, and Critical Accounting Policies and Estimates –Full Cost Method of Accounting, Depletion and Depreciation and Oil and Natural Gas Properties for further discussion.

Income Taxes

	Year Ended December 31,
In thousands, except per BOE amounts and tax rates	2014			2013			2012
Current income tax expense (benefit)	$	(42,907	)	$	10,257		$	75,754
Deferred income tax expense	429,973			222,526			255,743
Total income tax expense	$	387,066		$	232,783		$	331,497
Average income tax expense per BOE	$	14.25		$	9.08		$	12.63
Effective tax rate	37.9		%	36.2		%	38.7		%
Total net deferred tax liability	$	2,776,569		$	2,346,540		$	2,124,296

Our income tax provisions for 2014 and 2013 were based on an estimated statutory rate of approximately 38%, while the 2012 tax provision was based on an estimated statutory rate of approximately 38.5%.  The fluctuation in our statutory rate is significantly driven by a shift in the amount of revenues we earn in each state due to acquisitions and divestitures and other production changes. Our effective tax rate was consistent with our estimated statutory rates in 2014 and 2012, while our 2013 effective tax rate was lower than our statutory rate due to the revaluation of our deferred taxes as a result of the lower overall statutory rate compared to 2012, as well as the inclusion of differences between our 2012 tax provision and our 2012 filed tax returns.

We recorded current income tax benefits in 2014 in recognition of reinstated bonus depreciation becoming available in December 2014, along with an increase in certain tax preference items. We expect this benefit to be carried back to our filed tax returns in prior years. Current income tax expense during 2013 is primarily related to state income taxes. The higher level of current income tax expense during 2012 included $42 million of current taxes resulting from the taxable gain recognized in the Bakken Exchange Transaction that we were unable to defer through a like-kind exchange transaction.

As of December 31, 2014, we had an estimated $42.8 million of enhanced oil recovery credits to carry forward related to our tertiary operations and $34.8 million of alternative minimum tax credits that can be utilized to reduce our current income taxes during 2015 or future years.  These enhanced oil recovery credits do not begin to expire until 2024.  Since the ability to earn additional enhanced oil recovery credits is based upon the level of oil prices, we would not currently expect to earn additional enhanced oil recovery credits unless oil prices were to continue to deteriorate.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Per-BOE Data

The following table summarizes our cash flow, DD&A and results of operations on a per-BOE basis for the comparative periods.  Each of the individual components is discussed above.

	Year Ended December 31,
Per-BOE data	2014			2013			2012
Oil and natural gas revenues	$	87.33		$	96.19		$	91.85
Receipt (payment) on settlements of commodity derivatives	0.05			(0.03		)	0.68
Lease operating expenses – excluding Delhi Field remediation	(24.10		)	(24.05		)	(20.29		)
Lease operating expenses – Delhi Field remediation	0.26			(4.45		)	—
Production and ad valorem taxes	(5.72		)	(6.35		)	(5.71		)
Marketing expenses, net of third-party purchases, and plant operating expenses	(1.76		)	(1.47		)	(1.60		)
Production netback	56.06			59.84			64.93
CO2 and helium sales, net of operating and exploration expenses	0.71			0.43			0.45
General and administrative expenses	(5.83		)	(5.66		)	(5.49		)
Interest expense, net	(6.74		)	(5.49		)	(5.85		)
Other	2.50			0.48			(1.44		)
Changes in assets and liabilities relating to operations	(1.69		)	3.49			1.17
Cash flow from operations	45.01			53.09			53.77
DD&A	(21.83		)	(19.89		)	(19.34		)
Deferred income taxes	(15.83		)	(8.68		)	(9.75		)
Loss on early extinguishment of debt	(4.19		)	(1.74		)	—
Noncash fair value adjustments on commodity derivatives	20.39			(1.57		)	(0.50		)
Impairment of assets	—			—			(0.67		)
Other noncash items	(0.16		)	(5.23		)	(3.49		)
Net income	$	23.39		$	15.98		$	20.02

MARKET RISK MANAGEMENT

Debt

We finance some of our acquisitions and other expenditures with fixed and variable rate debt.  These debt agreements expose us to market risk related to changes in interest rates.  At December 31, 2014, we had $395.0 million in outstanding borrowings on our Bank Credit Facility.  None of our existing debt has any triggers or covenants regarding our debt ratings with rating agencies, although under the NEJD financing lease, in the event of significant downgrades of our corporate credit rating by the rating agencies, certain credit enhancements can be required from us, and possibly other remedies made available under the lease.  In addition, our credit rating can potentially reduce our drawn borrowing costs under our Bank Credit Facility during an "investment grade period," though we do not anticipate having the ability to make such an election in the foreseeable future. The fair value of our senior subordinated debt is based on quoted market prices.  The following table presents the principal cash flows and fair values of our outstanding debt at December 31, 2014:

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Management’s Discussion and Analysis of Financial Condition and Results of Operations

In thousands	2015		2017		2019		2021		2022		2023		Total		Fair Value
Variable rate debt
Bank Credit Facility (weighted average interest rate of 1.9% at December 31, 2014)	$	—	$	—	$	395,000	$	—	$	—	$	—	$	395,000	$	395,000
Fixed rate debt
6⅜% Senior Subordinated Notes due 2021	—		—		—		400,000		—		—		400,000		381,000
5½% Senior Subordinated Notes due 2022	—		—		—		—		1,250,000		—		1,250,000		1,121,875
4⅝% Senior Subordinated Notes due 2023	—		—		—		—		—		1,200,000		1,200,000		1,038,000
Other Subordinated Notes	485		2,250		—		—		—		—		2,735		2,735

See Note 5, Long-Term Debt, to the Consolidated Financial Statements for details regarding our long-term debt, including information regarding our April 2014 debt issuance (at a lower interest rate and for a longer term) and repurchase and redemption of our outstanding 8¼% Senior Subordinated Notes due 2020.

Oil and Natural Gas Derivative Contracts

From time to time, we enter into oil and natural gas derivative contracts to provide an economic hedge of our exposure to commodity price risk associated with anticipated future oil and natural gas production.  These contracts have historically consisted of price floors, collars, three-way collars, fixed-price swaps, and fixed-price swaps enhanced with a sold put.  We do not hold or issue derivative financial instruments for trading purposes.  The production that we hedge has varied from year to year depending on our levels of debt, financial strength, and expectation of future commodity prices.  During 2014, in order to provide greater certainty to the range of our anticipated operating cash flows as we transitioned to a dividend-paying company, we utilized more fixed-price swaps than we had historically. For 2015, we have entered into a combination of enhanced swaps, collars, and three-way collars covering a total of 58,000 Bbls/d for the first three quarters of 2015 and 38,000 Bbls/d for the fourth quarter of 2015. Roughly half of these 2015 derivative contracts are collars and three-way collars, so the variability in potential cash flows from these types of hedges exposes us to more downside price risk than our 2014 fixed-price swaps. In addition, the sold puts that are part of our three-way collars and enhanced swaps limit the benefit that our hedges provide us to the extent that oil prices fall below the price of our sold puts. We anticipate that we may use more fixed-price swaps in the future or a combination of fixed-price swaps and collars as we look to provide more certainty around our cash flows in order to execute on our capital development plans, pay dividends and retain a healthy balance sheet. See Note 9, Commodity Derivative Contracts, to the Consolidated Financial Statements for additional information regarding our commodity derivative contracts.

All of the mark-to-market valuations used for our oil and natural gas derivatives are provided by external sources.  We manage and control market and counterparty credit risk through established internal control procedures that are reviewed on an ongoing basis.  We attempt to minimize credit risk exposure to counterparties through formal credit policies, monitoring procedures and diversification.  All of our commodity derivative contracts are with parties that are lenders under our Bank Credit Facility (or affiliates of such lenders).  We have included an estimate of nonperformance risk in the fair value measurement of our oil and natural gas derivative contracts, which we have measured for nonperformance risk based upon credit default swaps or credit spreads.

For accounting purposes, we do not apply hedge accounting to our oil and natural gas derivative contracts.  This means that any changes in the fair value of these commodity derivative contracts will be charged to earnings on a quarterly basis instead of charging the effective portion to other comprehensive income and the ineffective portion to earnings.

At December 31, 2014, our commodity derivative contracts were recorded at their fair value, which was a net asset of approximately $506.5 million, a $553.8 million increase from the $47.3 million net liability recorded at December 31, 2013.  This change is primarily related to the expiration of commodity derivative contracts during 2014, new commodity derivative contracts we entered into during 2014 for future periods, and the changes in oil and natural gas futures prices between December 31, 2013 and 2014.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Commodity Derivative Sensitivity Analysis

Based on NYMEX and LLS crude oil futures prices and natural gas futures prices as of December 31, 2014, and assuming both a 10% increase and decrease thereon, we would expect to receive payments on our crude oil and natural gas derivative contracts as shown in the following table:

	Receipt / (Payment)
In thousands	Crude Oil Derivative Contracts		Natural Gas Derivative Contracts
Based on:
NYMEX futures prices as of December 31, 2014	$	626,879	$	2,703
10% increase in prices	575,264		1,882
10% decrease in prices	674,812		3,527

Our commodity derivative contracts are used as an economic hedge of our exposure to commodity price risk associated with anticipated future production. As a result, changes in receipts or payments of our commodity derivative contracts due to changes in commodity prices as reflected in the above table would be mostly offset by a corresponding increase or decrease in the cash receipts on sales of our oil and natural gas production to which those commodity derivative contracts relate. In addition to the analysis performed in the table above, if NYMEX and LLS crude oil futures prices remained flat at $50 per Bbl during 2015 and 2016, we would expect to receive total payments on our crude oil and natural gas derivative contracts of approximately $560 million in 2015 and $121 million in 2016.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The preparation of financial statements in accordance with generally accepted accounting principles requires that we select certain accounting policies and make certain estimates and judgments regarding the application of those policies.  Our significant accounting policies are included in Note 1, Significant Accounting Policies, to the Consolidated Financial Statements.  These policies, along with the underlying assumptions and judgments by our management in their application, have a significant impact on our consolidated financial statements.  Following is a discussion of our most critical accounting estimates, judgments and uncertainties that are inherent in the preparation of our financial statements.

Full Cost Method of Accounting, Depletion and Depreciation and Oil and Natural Gas Properties

Businesses involved in the production of oil and natural gas are required to follow accounting rules that are unique to the oil and gas industry.  We apply the full cost method of accounting for our oil and natural gas properties.  Another acceptable method of accounting for oil and natural gas production activities is the successful efforts method of accounting.  In general, the primary differences between the two methods are related to the capitalization of costs and the evaluation for asset impairment.  Under the full cost method, all geological and geophysical costs, exploratory dry holes and delay rentals are capitalized to the full cost pool, whereas under the successful efforts method such costs are expensed as incurred.  In the assessment of impairment of oil and natural gas properties, the successful efforts method follows the Accounting for the Impairment or Disposal of Long-Lived Assets topic of the FASC, under which the net book value of assets is measured for impairment against the undiscounted future cash flows using commodity prices consistent with management expectations.  Under the full cost method, the full cost pool (net book value of oil and natural gas properties) is measured against future cash flows discounted at 10% using the average first-day-of-the-month oil and natural gas price for each month during a 12-month rolling period ended as of each quarterly reporting period.  The financial results for a given period could be substantially different depending on the method of accounting that an oil and gas entity applies.  Further, we do not designate our oil and natural gas derivative contracts as hedge instruments for accounting purposes under the Derivatives and Hedging topic of the FASC (see below), and as a result, these contracts are not considered in the full cost ceiling test.

We make significant estimates at the end of each period related to accruals for oil and natural gas revenues, production, capitalized costs and operating expenses.  We calculate these estimates with our best available data, which includes, among other

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

things, production reports, price posting, information compiled from daily drilling reports and other internal tracking devices, and analysis of historical results and trends.  While management is not aware of any required revisions to its estimates, there will likely be future adjustments resulting from such things as revisions in estimated oil and natural gas volumes, changes in ownership interests, payouts, joint venture audits, re-allocations by the purchasers or pipelines, or other corrections and adjustments common in the oil and gas industry, many of which will require retroactive application.  These types of adjustments cannot be currently estimated or determined and will be recorded in the period during which the adjustment occurs.

Under full cost accounting, the estimated quantities of proved oil and natural gas reserves used to compute depletion and the related present value of estimated future net cash flows therefrom used to perform the full cost ceiling test have a significant impact on the underlying financial statements.  The process of estimating oil and natural gas reserves is very complex, requiring significant decisions in the evaluation of all available geological, geophysical, engineering and economic data.  The data for a given field may also change substantially over time as a result of numerous factors, including additional development activity, evolving production history and continued reassessment of the viability of production under varying economic conditions.  As a result, material revisions to existing reserve estimates may occur from time to time.  Although every reasonable effort is made to ensure that the reported reserve estimates represent the most accurate assessments possible, including the hiring of independent engineers to prepare reported estimates, the subjective decisions and variances in available data for various fields make these estimates generally less precise than other estimates included in our financial statement disclosures.  Over the last four years, annual revisions to our reserve estimates have averaged approximately 1.5% of the previous year's estimates and have been both positive and negative.

Changes in commodity prices also affect our reserve quantities.  Between 2012 and 2013, oil and natural gas prices used to calculate reserve quantities in our year-end proved reserve report increased, resulting in an increase in our proved reserves of 3.0 MMBOE.  Between 2013 and 2014, oil and natural gas prices used to calculate year-end proved reserves decreased, resulting in a decrease in our proved reserves of 0.7 MMBOE. These changes in quantities affect our DD&A rate, and the combined effect of changes in quantities and commodity prices impacts our full cost ceiling test calculation.  For example, we estimate that a 5% increase in our estimate of proved reserves quantities would have lowered our fourth quarter 2014 DD&A rate from $18.17 per BOE to approximately $17.33 per BOE, and a 5% decrease in our proved reserve quantities would have increased our DD&A rate to approximately $19.09 per BOE.  Also, reserve quantities and their ultimate values, determined solely by our lenders, are the primary factors in determining the maximum borrowing base under our Bank Credit Facility.

Under full cost accounting rules, we are required each quarter to perform a ceiling test calculation.  The net capitalized costs of oil and natural gas properties are limited to the lower of unamortized cost or the cost center ceiling.  The cost center ceiling is defined as (1) the present value of estimated future net revenues from proved reserves before future abandonment costs (discounted at 10%), based on the average first-day-of-the-month oil and natural gas price for each month during a 12-month rolling period; plus (2) the cost of properties not being amortized; plus (3) the lower of cost or estimated fair value of unproved properties included in the costs being amortized, if any; less (4) related income tax effects.  Our future net revenues from proved reserves are not reduced for development costs related to the cost of drilling for and developing CO₂ reserves nor for those related to the cost of constructing CO₂ pipelines, as those costs have already been incurred by the Company.  Therefore, we include in the ceiling test, as a reduction of future net revenues, that portion of our capitalized CO₂ costs related to CO₂ reserves and CO₂ pipelines that we estimate will be consumed in the process of producing our proved oil and natural gas reserves.  The fair value of our oil and natural gas derivative contracts is not included in the ceiling test, as we do not designate these contracts as hedge instruments for accounting purposes.

We did not have a full cost pool ceiling test write-down in 2014, 2013 or 2012.  However, a decline of approximately 15% or more in the value of the cost center ceiling would have resulted in an impairment during the year ended December 31, 2014.Crude oil prices increased between 2012 and 2013 and decreased during 2014. Although NYMEX prices decreased precipitously in the fourth quarter of 2014, ending the year at approximately $53 per Bbl, first-day-of-the-month NYMEX oil prices during 2014 averaged $94.99 per Bbl during the year. First-day-of-the-month unweighted average NYMEX natural gas prices during 2014 of $4.30 per MMBtu were higher than unweighted average natural gas prices for 2013. Commodity prices have historically been volatile and are expected to continue to be so in the future.  If oil and natural gas prices were to remain at or near these late 2014 and early 2015 levels in subsequent periods, we would likely begin recording write-downs due to the full cost ceiling test in the first or second quarter of 2015, and also in subsequent quarterly periods if prices remain low.  The possibility and amount of any

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

future write-down is difficult to predict, and will depend, in part, upon the oil and natural gas prices utilized in the ceiling test, the incremental proved reserves that might be added during each period, and future capital expenditures and operating costs.

We exclude certain unevaluated costs from the amortization base and full cost ceiling test pending the determination of whether proved reserves can be assigned to such properties. These costs are transferred to the full cost amortization base in the course of these properties being developed, tested and evaluated. At least annually, we test these assets for impairment based on an evaluation of management's expectations of future pricing, evaluation of lease expiration terms, and planned project development activities. We did not have an impairment of our unevaluated costs for the years ended December 31, 2014, 2013 or 2012.

Tertiary Injection Costs

Our tertiary operations are conducted in reservoirs that have already produced significant amounts of oil over many years; however, in accordance with the rules for recording proved reserves, we cannot recognize proved reserves associated with enhanced recovery techniques such as CO₂ injection until we can demonstrate production resulting from the tertiary process or unless the field is analogous to an existing flood.  Our costs associated with the CO₂ we produce (or acquire) and inject are principally our cash out-of-pocket costs of production, transportation and acquisition, and to pay royalties.

We capitalize, as a development cost, injection costs in fields that are in their development stage, which means we have not yet seen incremental oil production due to the CO₂ injections (i.e., a production response).  These capitalized development costs will be included in our unevaluated property costs if there are not already proved tertiary reserves in that field.  After we see a production response to the CO₂ injections (i.e., the production stage), injection costs will be expensed as incurred, and any previously deferred unevaluated development costs will become subject to depletion upon recognition of proved tertiary reserves.  During 2014, 2013 and 2012, we capitalized $20.7 million, $38.7 million and $36.8 million, respectively, of tertiary injection costs associated with our tertiary projects.

Income Taxes

We make certain estimates and judgments in determining our income tax expense for financial reporting purposes.  These estimates and judgments occur in the calculation of certain tax assets and liabilities that arise from differences in the timing and recognition of revenue and expense for tax and financial reporting purposes.  Our federal and state income tax returns are generally not prepared or filed before the consolidated financial statements are prepared; therefore, we estimate the tax basis of our assets and liabilities at the end of each period as well as the effects of tax rate changes, tax credits and net operating loss carryforwards.  Adjustments related to these estimates are recorded in our tax provision in the period in which we finalize our income tax returns.  Further, we must assess the likelihood that we will be able to recover or utilize our deferred tax assets (primarily our enhanced oil recovery credits and state loss carryforwards).  If recovery is not likely, we must record a valuation allowance against such deferred tax assets for the amount we would not expect to recover, which would result in an increase to our income tax expense.  As of December 31, 2014, we believe that all of our recognized deferred tax assets will ultimately be recovered.  If our estimates and judgments change regarding our ability to utilize our deferred tax assets, our tax provision would increase in the period it is determined that recovery is not likely.  A 1% increase in our effective tax rate would have increased our calculated income tax expense by approximately $10.2 million, $6.4 million and $8.6 million for the years ended December 31, 2014, 2013 and 2012, respectively.  See Note 6, Income Taxes, to the Consolidated Financial Statements and Results of Operations – Income Taxes above for further information concerning our income taxes.

Fair Value Estimates

The FASC defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. It does not require us to make any new fair value measurements, but rather establishes a fair value hierarchy that prioritizes the inputs to the valuation techniques used to measure fair value. Level 1 inputs are given the highest priority in the fair value hierarchy, as they represent observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of the reporting date, while Level 3 inputs are given the lowest priority, as they represent unobservable inputs that are not corroborated by market data. Valuation techniques that maximize the use of observable inputs are favored. See Note 10, Fair Value Measurements, to the Consolidated Financial Statements for disclosures regarding our recurring fair value measurements.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Significant uses of fair value measurements include:

• allocation of the purchase price paid to acquire businesses to the assets acquired and liabilities assumed in those acquisitions;

• assessment of impairment of long-lived assets;

• assessment of impairment of goodwill; and

• recorded value of commodity derivative instruments.

Acquisitions

Under the acquisition method of accounting for business combinations, the purchase price paid to acquire a business is allocated to its assets and liabilities based on the estimated fair values of the assets acquired and liabilities assumed as of the date of acquisition.  The FASC Fair Value Measurement topic defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (often referred to as the "exit price"). A fair value measurement is based on the assumptions of market participants and not those of the reporting entity.  Therefore, entity-specific intentions do not impact the measurement of fair value unless those assumptions are consistent with market participant views.

The excess of the purchase price over the fair value (as defined by the FASC Fair Value Measurement topic) of the net tangible and identifiable intangible assets acquired is recorded as goodwill.  A significant amount of judgment is involved in estimating the individual fair values involving long-term tangible assets, identifiable intangible assets and long-term asset retirement obligations.  We use all available information to estimate the fair values of assets acquired and liabilities assumed in an acquisition and engage a third-party consultant to review certain assumptions utilized in our valuations.

Specifically, the FASC Fair Value Measurement topic requires us to value oil properties recoverable through enhanced oil recovery by estimating the cost a third-party market participant would pay for CO₂. A third party's economics and access to CO₂ are substantially different in our operating regions than our own, as CO₂ is limited and there may be no known CO₂ available in a given area except through our own sources. These factors generally result in our estimation of the cost of CO₂ to a market participant being higher than our cost. Because of our strategic advantage relating to CO₂ supply and associated infrastructure, a third party's economics (the required basis for allocating values) for a potential EOR flood will be less than ours. Therefore, we cannot attribute much, if any, of our purchase price relating to the future EOR flood to unevaluated properties, even though we may have attributed value to the future flood when we made the purchase decision. As such, we must attribute the unallocated purchase price to goodwill, which has resulted in our recognition of more goodwill than most of our industry peers.

The fair values used to allocate the purchase price of an acquisition are often estimated using the expected present value of future cash flows method, which requires us to project related future cash inflows and outflows and apply an appropriate discount rate.  The estimates used in determining fair values are based on assumptions believed to be reasonable but that are inherently uncertain. Accordingly, actual results may differ from the projected results used to determine fair value.

Impairment Assessment of Goodwill

We test goodwill for impairment annually during the fourth quarter, or between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount.  The need to test for impairment can be based on several indicators, including a significant reduction in prices of oil or natural gas, a full-cost ceiling write-down of oil and natural gas properties, unfavorable adjustments to reserves, significant changes in the expected timing of production, other changes to contracts or changes in the regulatory environment.

Goodwill is tested for impairment at the reporting unit level.  Denbury applies SEC full cost accounting rules, under which the acquisition cost of oil and gas properties is recognized on a cost center basis (country), of which Denbury has only one cost center (United States).  Goodwill is assigned to this single reporting unit.

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

In each period that a goodwill impairment test is performed, we have the option to assess qualitative factors to determine if it is more likely than not that our reporting unit's fair value is less than its carrying amount.  The following events and circumstances are certain of the qualitative factors we consider in evaluating whether it is more likely than not the fair value of our reporting unit is less than its carrying amount:

• Macroeconomic conditions, such as deterioration in general economic conditions, limitations on accessing capital, or other developments in equity and credit markets;

• Industry and market conditions, such as deterioration in the environment in which we operate, including significant declines in oil prices, inability to access oil field equipment and/or qualified personnel and regulations impacting the oil and natural gas industry, among others;

• Cost factors, such as increases in power and labor costs;

• Overall financial performance, such as negative or declining cash flows or a decline in actual or forecasted revenues or earnings;

• Other relevant Company-specific events, such as material changes in management or key personnel, a change in strategy or litigation;

• Material events, such as a change in the composition or carrying amount of our reporting unit's net assets, including acquisitions and dispositions; and

• Consideration of the relationship of our market capitalization to our book value, as well as a sustained decrease in our share price.

If we determine that it is more likely than not that our reporting unit's fair value is less than its carrying amount, we will proceed to step one of the two-step quantitative goodwill assessment, in which we perform a calculation to compare the fair value of our reporting unit to its carrying cost.  In any given period, we have the option to bypass the qualitative assessment and proceed directly to step one of the two-step quantitative goodwill impairment test.

We performed our goodwill impairment assessment as of December 31, 2014. Because our enterprise value (combined market capitalization plus a control premium of 10% and the fair value of our long-term debt) was below the combined book value of our stockholders' equity and long-term debt as of December 31, 2014, we were required to proceed to step two of the goodwill impairment test. A key factor resulting in the deficit of enterprise value to book value is pricing utilized in assessing impairment of our oil and natural gas properties through the full cost pool ceiling test. As prescribed by FASC Topic 932, Extractive Industries – Oil and Gas, the ceiling test was calculated using the first-day-of-the-month unweighted average of NYMEX oil prices of $94.99 per Bbl during 2014, rather than oil and natural gas prices as of December 31, 2014. If the ceiling test had been performed using December 31, 2014, oil and natural gas prices, our oil and natural gas properties balance would have reflected a write-down, reducing the amount by which our book value of stockholders' equity and long-term debt would have exceeded our enterprise value.

As a result, we performed the step two quantitative assessment to assign the fair value of the reporting unit (enterprise value) to its assets and liabilities and calculate the implied fair value of goodwill as the excess of fair value of the reporting unit over the amounts assigned to the asset and liabilities. We based our fair value estimates on projected financial information that we believe to be reasonable.  However, actual results may differ from those projections.

Oil and natural gas reserves, which represent the most significant assets requiring valuation, were estimated using the expected present value of future cash flows method based on December 31, 2014, NYMEX oil and natural gas futures prices for the next five years, which ranged from approximately $56 per Bbl to $70 per Bbl for oil and $3 per MMBtu to $4 per MMBtu for natural gas, adjusted for current price differentials. Projections of future cash flows were based on non-pricing assumptions used in our 2014 year-end reserves process, adjusted where applicable for the December 31, 2014, oil and natural gas futures prices used in the goodwill impairment assessment and the inclusion of cash flows associated with probable and possible oil and natural gas reserves. More specifically, projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs (including our announced reduction in planned 2015 capital spending), projected CO₂ availability (including current and potential future industrial sources of CO₂) and cost of CO₂ (adjusted for changes in oil prices for those contracts tied to oil prices), risk adjustment factors applied to probable and possible oil and natural gas reserve cash flows, projected recovery factors of oil and natural gas reserves, and a weighted-average cost of capital rate of 9% per annum applied to all cash flows are key assumptions impacting our estimate of future cash flows. Consistent

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Denbury Resources Inc.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

with a market participant view, we did not assign a separate value to CO₂ properties and pipelines from the value assigned to oil and natural gas properties other than CO₂ reserves associated with existing third-party sales contracts, because CO₂ properties and pipelines are expected to be dedicated to the tertiary flood operations and the lower cost of utilizing our owned assets is reflected in the tertiary oil reserve cash flows.

The implied fair value of goodwill calculated in this quantitative assessment significantly exceeded the corresponding book value of goodwill. Therefore, we did not record any goodwill impairment during 2014, nor have we recorded a goodwill impairment historically. The cushion between the implied fair value of goodwill and book value of goodwill is due to our enterprise value declining at a slower rate than NYMEX oil futures prices, which were used in the step-two valuation of our oil reserves. A significant change in the assumptions noted above, including future oil and natural gas prices, or a significant decrease in our enterprise value could lead to an impairment of goodwill in future periods. For example, calculations based upon future oil and natural gas prices approximately 20% higher than those at December 31, 2014, without a change in enterprise value or change in other cash flow assumptions, likely would have required a partial impairment of goodwill at December 31, 2014.

Impairment Assessment of Long-lived Assets

We test long-lived assets for impairment that are not subject to our quarterly full cost pool ceiling test, including a portion of our capitalized CO₂ properties and pipelines, the Riley Ridge gas processing facility and our related intangible assets, whenever events or changes in circumstances indicate that the carrying value may not be recoverable. The factors we assess to determine if a long-lived asset impairment test is necessary include, among other factors, a significant adverse change in the business climate that could affect the value of a long-lived asset, a significant decrease in the market price of an asset group, a significant adverse change in the extent or manner in which a long-lived asset (asset group) is being used or in its physical condition, or a current-period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset (asset group).

We perform our long-lived asset impairment test by comparing the net carrying costs of our two long-lived asset groups ((1) Gulf Coast region and (2) Rocky Mountain region) to the respective expected future undiscounted net cash flows that are supported by these long-lived assets, which include (1) the production of our probable and possible oil and natural gas reserves and (2) the sale of non-hydrocarbons (CO₂ and helium) to third parties. If the undiscounted net cash flows are below the net carrying costs for an asset group, the Company must record an impairment loss by the amount, if any, that net carrying costs exceed the fair value of the long-lived asset group.

Significant assumptions impacting expected future undiscounted net cash flows include projections of future oil and natural gas prices (management's assumption of oil prices of $75 per Bbl and gas futures pricing were used for the December 31, 2014, analysis), projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs, projected availability and cost of CO₂, projected recovery factors of tertiary reserves and risk-adjustment factors applied to the cash flows. Given the significant decline in oil prices in the fourth quarter of 2014, we performed step one of the long-lived asset impairment test for both asset groups. The undiscounted net cash flows for our asset groups significantly exceeded the net carrying costs; thus, step two of the impairment test was not required and no impairment was recorded. Changes in the assumptions noted above or changes in management's intended use of assets or asset groups could cause step two of the long-lived asset impairment test to be performed, which could result in the recording of long-lived asset impairments.

Oil and Natural Gas Derivative Contracts

We enter into oil and natural gas derivative contracts to mitigate our exposure to commodity price risk associated with future oil and natural gas production.  These contracts have historically consisted of options, in the form of price floors, collars or three-way collars, fixed-price swaps and fixed-price swaps enhanced with a sold put.  Our derivative financial instruments are recorded on the balance sheet as either an asset or liability measured at fair value. The valuation methods used to measure the fair values of these assets and liabilities require considerable management judgment and estimates to derive the inputs necessary to determine fair value estimates, such as forward prices for commodities, interest rates, volatility factors and credit worthiness, as well as other relevant economic measures. We do not apply hedge accounting to our commodity derivative contracts under the FASC Derivatives and Hedging topic; accordingly, changes in the fair value of these instruments are recognized in earnings on a quarterly basis

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Management’s Discussion and Analysis of Financial Condition and Results of Operations

instead of charging the effective portion to other comprehensive income and the balance to earnings.  While we may experience more volatility in our net income than if we were to apply hedge accounting treatment as permitted by the FASC Derivatives and Hedging topic, we believe that for us, the benefits associated with applying hedge accounting do not outweigh the cost, time and effort to comply with hedge accounting.

Environmental and Litigation Contingencies

The Company makes judgments and estimates in recording liabilities for contingencies such as environmental remediation or ongoing litigation. Liabilities are recorded when it is both probable that a loss has been incurred and such loss is reasonably estimable. Assessments of liabilities are based on information obtained from independent and in-house experts, loss experience in similar situations, actual costs incurred, and other case-by-case factors. Actual costs can vary from such estimates for a variety of reasons. The costs of environmental remediation or litigation can vary from estimates due to new developments regarding the facts and circumstances of each event, including in the case of environmental remediation, the timing of remediation, our understanding of the environmental impact, remediation methods available, and regulatory requirements, and in the case of litigation, differing interpretations of laws and facts and assessments of damages asserted and/or incurred.

Use of Estimates

See Note 1, Significant Accounting Policies, to the Consolidated Financial Statements for a discussion of our use of estimates.

Recent Accounting Pronouncements

See Note 1, Significant Accounting Policies, to the Consolidated Financial Statements for a discussion of recent accounting pronouncements.

FORWARD-LOOKING INFORMATION

The statements contained in this Annual Report on Form 10-K that are not historical facts, including, but not limited to, statements found in the sections entitled "Business and Properties" and "Management's Discussion and Analysis of Financial Condition and Results of Operations," are forward-looking statements, as that term is defined in Section 21E of the Securities and Exchange Act of 1934, as amended, that involve a number of risks and uncertainties.  Such forward-looking statements may be or may concern, among other things, projected future hydrocarbon prices, the length or severity of the oil price downturn in late 2014 and early 2015, assumptions based on current and projected oil and gas costs, liquidity, availability of capital, borrowing capacity, estimated future cash flows, predicted availability of advantageous commodity derivative contracts or the cash flow benefits therefrom, forecasted capital expenditures, drilling activity or methods including the timing and location thereof, estimated timing of commencement of CO₂ flooding of particular fields or areas, or the timing of pipeline construction or completion or the cost thereof, dates of completion of to-be-constructed industrial plants and the initial date of capture of CO₂ from such plants, timing of CO₂ injections and initial production responses in tertiary flooding projects, acquisition plans and proposals and dispositions, development activities, finding costs, cost savings, capital budgets, production rates and volumes or forecasts thereof, assumptions regarding payment of future cash dividends to shareholders, the rate thereof, or the sustainability or growth of future payments, hydrocarbon reserve quantities and values, CO₂ reserves, helium reserves, potential reserves, percentages of recoverable original oil in place, regulatory matters, prospective legislation affecting the oil and gas industry, mark-to-market values, possible asset impairments, competition, long-term forecasts of production, finding costs, rates of return, estimated costs, or changes in costs, future capital expenditures and overall economics and other variables surrounding our operations and future plans.  Such forward-looking statements generally are accompanied by words such as "plan," "estimate," "expect," "predict," "anticipate," "projected," "should," "assume," "believe," "target" or other words that convey the uncertainty of future events or outcomes.  Such forward-looking information is based upon management's current plans, expectations, estimates and assumptions and is subject to a number of risks and uncertainties that could significantly affect current plans, anticipated actions, the timing of such actions and our financial condition and results of operations.  As a consequence, actual results may differ materially from expectations, estimates or assumptions expressed in or implied by any forward-looking statements made by us or on our behalf.  Among the factors that could cause actual results to differ materially are fluctuations of the prices received or demand for our oil and natural gas; effects of our indebtedness; success of our risk management techniques; inaccurate cost estimates; availability of and fluctuations in the prices of goods and services; the uncertainty of drilling results and reserve estimates; operating hazards; disruption

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Management’s Discussion and Analysis of Financial Condition and Results of Operations

of operations and damages from hurricanes or tropical storms; acquisition risks; requirements for capital or its availability; conditions in the financial and credit markets; general economic conditions; competition and government regulations; and unexpected delays, as well as the risks and uncertainties inherent in oil and gas drilling and production activities or that are otherwise discussed in this annual report, including, without limitation, the portions referenced above, and the uncertainties set forth from time to time in our other public reports, filings and public statements.

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Denbury Resources Inc.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

The information required by Item 7A is set forth under Market Risk Management in Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations.

Item 8. Financial Statements and Supplementary Information

		Page
Report of Independent Registered Public Accounting Firm		72
Consolidated Balance Sheets		73
Consolidated Statements of Operations		74
Consolidated Statements of Comprehensive Operations		75
Consolidated Statements of Cash Flows		76
Consolidated Statements of Changes in Stockholders’ Equity		77
Notes to Consolidated Financial Statements
1.	Significant Accounting Policies	78
2.	Acquisition	85
3.	Asset Retirement Obligations	86
4.	Property and Equipment	87
5.	Long-Term Debt	88
6.	Income Taxes	92
7.	Stockholders' Equity	94
8.	Stock Compensation Plans	95
9.	Commodity Derivative Contracts	99
10.	Fair Value Measurements	101
11.	Commitments and Contingencies	103
12.	Additional Balance Sheet Details	106
13.	Supplemental Cash Flow Information	107
14.	Subsequent Events	107
Supplemental Oil and Natural Gas Disclosures (Unaudited)		108
Supplemental CO2 and Helium Disclosures (Unaudited)		112
Unaudited Quarterly Information		113

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of Denbury Resources Inc.:

In our opinion, the consolidated financial statements listed in the accompanying index present fairly, in all material respects, the financial position of Denbury Resources Inc. and its subsidiaries at December 31, 2014 and 2013, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2014 in conformity with accounting principles generally accepted in the United States of America.  Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2014, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).  The Company's management is responsible for these financial statements, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Report on Internal Control over Financial Reporting appearing under Item 9A.  Our responsibility is to express opinions on these financial statements and on the Company's internal control over financial reporting based on our integrated audits.  We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).  Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects.  Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation.  Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk.  Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.  A company's internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.  Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Dallas, Texas

February 27, 2015

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Denbury Resources Inc.

Consolidated Balance Sheets

(In thousands, except par value and share data)

	December 31,
	2014			2013
Assets
Current assets
Cash and cash equivalents	$	23,153		$	12,187
Accrued production receivable	181,761			262,047
Trade and other receivables, net	156,955			78,295
Derivative assets	440,359			5
Deferred tax assets	—			52,754
Other current assets	10,452			9,271
Total current assets	812,680			414,559
Property and equipment
Oil and natural gas properties (using full cost accounting)
Proved properties	9,782,337			8,945,326
Unevaluated properties	918,406			780,481
CO2 properties	1,162,538			1,117,167
Pipelines and plants	2,269,564			2,209,560
Other property and equipment	468,051			466,969
Less accumulated depletion, depreciation, amortization and impairment	(4,248,652		)	(3,668,225		)
Net property and equipment	10,352,244			9,851,278
Derivative assets	66,187			9,942
Goodwill	1,283,590			1,283,590
Other assets	213,101			229,368
Total assets	$	12,727,802		$	11,788,737
Liabilities and Stockholders' Equity
Current liabilities
Accounts payable and accrued liabilities	$	394,758		$	410,543
Oil and gas production payable	128,170			174,677
Derivative liabilities	—			53,822
Deferred tax liabilities	81,727			—
Current maturities of long-term debt	35,470			36,157
Total current liabilities	640,125			675,199
Long-term liabilities
Long-term debt, net of current portion	3,535,900			3,260,625
Asset retirement obligations	126,411			119,888
Derivative liabilities	—			3,413
Deferred tax liabilities	2,694,842			2,399,294
Other liabilities	26,668			28,912
Total long-term liabilities	6,383,821			5,812,132
Commitments and contingencies (Note 11)
Stockholders' equity
Preferred stock, $.001 par value, 25,000,000 shares authorized, none issued and outstanding	—			—
Common stock, $.001 par value, 600,000,000 shares authorized; 411,779,911 and 409,215,573 shares issued, respectively	412			409
Paid-in capital in excess of par	3,230,418			3,186,714
Retained earnings	3,392,465			2,844,432
Accumulated other comprehensive loss	(209		)	(276		)
Treasury stock, at cost, 58,415,507 and 46,710,896 shares, respectively	(919,230		)	(729,873		)
Total stockholders' equity	5,703,856			5,301,406
Total liabilities and stockholders' equity	$	12,727,802		$	11,788,737

See accompanying Notes to Consolidated Financial Statements.

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Denbury Resources Inc.

Consolidated Statements of Operations

(In thousands, except per share data)

	Year Ended December 31,
	2014			2013		2012
Revenues and other income
Oil, natural gas, and related product sales	$	2,372,473		$	2,466,234	$	2,409,867
CO2 and helium sales and transportation fees	44,643			27,950		26,453
Interest income and other income	18,089			22,943		20,152
Total revenues and other income	2,435,205			2,517,127		2,456,472
Expenses
Lease operating expenses	647,559			730,574		532,359
Marketing and plant operating expenses	64,379			49,246		52,836
CO2 and helium discovery and operating expenses	25,222			16,916		14,694
Taxes other than income	169,701			176,231		160,016
General and administrative expenses	158,343			145,211		144,019
Interest, net of amounts capitalized of $24,202, $79,253 and $77,432, respectively	183,003			140,709		153,581
Depletion, depreciation, and amortization	592,972			509,943		507,538
Commodity derivatives expense (income)	(555,255		)	41,024		(4,834		)
Loss on early extinguishment of debt	113,908			44,651		—
Impairment of assets	—			—		17,515
Other expenses	12,816			20,242		21,891
Total expenses	1,412,648			1,874,747		1,599,615
Income before income taxes	1,022,557			642,380		856,857
Income tax provision	387,066			232,783		331,497
Net Income	$	635,491		$	409,597	$	525,360
Net income per common share
Basic	$	1.82		$	1.12	$	1.36
Diluted	$	1.81		$	1.11	$	1.35
Dividends declared per common share	$	0.25		$	—	$	—
Weighted average common shares outstanding
Basic	348,962			366,659		385,205
Diluted	351,167			369,877		388,938

See accompanying Notes to Consolidated Financial Statements.

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Denbury Resources Inc.

Consolidated Statements of Comprehensive Operations

(In thousands)

	Year Ended December 31,
	2014		2013		2012
Net income	$	635,491	$	409,597	$	525,360
Other comprehensive income, net of income tax
Interest rate lock derivative contracts reclassified to income, net of tax of $45, $40 and $43, respectively	67		72		70
Total other comprehensive income	67		72		70
Comprehensive income	$	635,558	$	409,669	$	525,430

See accompanying Notes to Consolidated Financial Statements.

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Denbury Resources Inc.

Consolidated Statements of Cash Flows

(In thousands)

	Year Ended December 31,
	2014			2013			2012
Cash flows from operating activities
Net income	$	635,491		$	409,597		$	525,360
Adjustments to reconcile net income to cash flows from operating activities
Depletion, depreciation, and amortization	592,972			509,943			507,538
Deferred income taxes	429,973			222,526			255,743
Stock-based compensation	30,513			33,003			29,310
Commodity derivatives expense (income)	(555,255		)	41,024			(4,834		)
Settlements of commodity derivatives	1,421			(662		)	17,880
Loss on early extinguishment of debt	113,908			44,651			—
Amortization of debt issuance costs and discounts	13,476			14,023			14,695
Impairment of assets	—			—			17,515
Other, net	6,311			(2,318		)	16,917
Changes in assets and liabilities, net of effects from acquisitions
Accrued production receivable	80,285			(15,085		)	36,234
Trade and other receivables	(78,469		)	4,981			45,836
Other current and long-term assets	3,174			10,462			7,688
Accounts payable and accrued liabilities	501			91,816			5,828
Oil and natural gas production payable	(46,506		)	12,731			(23,460		)
Other liabilities	(4,970		)	(15,497		)	(41,359		)
Net cash provided by operating activities	1,222,825			1,361,195			1,410,891
Cash flows from investing activities
Oil and natural gas capital expenditures	(946,846		)	(900,221		)	(1,122,615		)
Acquisitions of oil and natural gas properties	(8,773		)	(9,243		)	(156,082		)
Bakken exchange transaction	—			(10,385		)	281,669
CO2 capital expenditures	(48,134		)	(93,744		)	(131,043		)
Pipelines and plants capital expenditures	(72,151		)	(184,286		)	(330,417		)
Purchases of other assets	(3,197		)	(65,987		)	(25,765		)
Net proceeds from sales of oil and natural gas properties and equipment	3,453			8,037			34,750
Net proceeds from sale of short-term investments	—			—			83,545
Other	(1,107		)	(19,480		)	(10,883		)
Net cash used in investing activities	(1,076,755		)	(1,275,309		)	(1,376,841		)
Cash flows from financing activities
Bank repayments	(2,609,000		)	(1,550,000		)	(1,555,000		)
Bank borrowings	2,664,000			1,190,000			1,870,000
Repayment of senior subordinated notes	(997,345		)	(651,270		)	—
Premium paid on repayment of senior subordinated notes	(101,342		)	(36,475		)	—
Net proceeds from issuance of senior subordinated notes	1,250,000			1,200,000			—
Costs of debt financing	(24,407		)	(20,161		)	(34		)
Common stock repurchase program	(211,356		)	(281,958		)	(251,480		)
Cash dividends paid	(87,044		)	—			—
Other	(18,610		)	(22,346		)	(17,718		)
Net cash provided by (used in) financing activities	(135,104		)	(172,210		)	45,768
Net increase (decrease) in cash and cash equivalents	10,966			(86,324		)	79,818
Cash and cash equivalents at beginning of year	12,187			98,511			18,693
Cash and cash equivalents at end of year	$	23,153		$	12,187		$	98,511

 See accompanying Notes to Consolidated Financial Statements.

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Denbury Resources Inc.

Consolidated Statements of Changes in Stockholders’ Equity

(Dollar amounts in thousands)

	Common Stock ($.001 Par Value)			Paid-In Capital in Excess of Par			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock (at cost)					Total Equity
	Shares	Amount											Shares		Amount
Balance – December 31, 2011	402,946,070	$	403	$	3,090,374		$	1,909,475		$	(418	)	13,965,673		$	(193,336	)	$	4,806,498
Stock Repurchase Program	—	—		—			—			—			16,978,008		(266,657		)	(266,657		)
Issued or purchased pursuant to employee stock compensation plans	3,197,476	3		6,021			—			—			—		—			6,024
Issued pursuant to employee stock purchase plan	—	—		1,607			—			—			(815,385	)	11,653			13,260
Issued pursuant to directors' compensation plan	19,648	—		321			—			—			—		—			321
Stock-based compensation	—	—		37,897			—			—			—		—			37,897
Income tax benefit from equity awards	—	—		241			—			—			—		—			241
Tax withholding – stock compensation	—	—		—			—			—			472,966		(8,125		)	(8,125		)
Derivative contracts, net	—	—		—			—			70			—		—			70
Net income	—	—		—			525,360			—			—		—			525,360
Balance – December 31, 2012	406,163,194	406		3,136,461			2,434,835			(348		)	30,601,262		(456,465		)	5,114,889
Stock Repurchase Program	—	—		—			—			—			16,468,648		(277,768		)	(277,768		)
Issued or purchased pursuant to employee stock compensation plans	3,038,767	3		5,486			—			—			—		—			5,489
Issued pursuant to employee stock purchase plan	—	—		1,844			—			—			(860,901	)	13,260			15,104
Issued pursuant to directors' compensation plan	13,612	—		344			—			—			—		—			344
Stock-based compensation	—	—		42,091			—			—			—		—			42,091
Income tax benefit from equity awards	—	—		488			—			—			—		—			488
Tax withholding – stock compensation	—	—		—			—			—			501,887		(8,900		)	(8,900		)
Derivative contracts, net	—	—		—			—			72			—		—			72
Net income	—	—		—			409,597			—			—		—			409,597
Balance – December 31, 2013	409,215,573	409		3,186,714			2,844,432			(276		)	46,710,896		(729,873		)	5,301,406
Stock Repurchase Program	—	—		—			—			—			12,398,017		(200,369		)	(200,369		)
Issued or purchased pursuant to employee stock compensation plans	2,541,809	3		7,020			—			—			—		—			7,023
Issued pursuant to employee stock purchase plan	—	—		(3,272		)	—			—			(1,247,156	)	19,630			16,358
Issued pursuant to directors' compensation plan	22,529	—		412			—			—			—		—			412
Stock-based compensation	—	—		39,532			—			—			—		—			39,532
Income tax benefit from equity awards	—	—		12			—			—			—		—			12
Tax withholding – stock compensation	—	—		—			—			—			553,750		(8,618		)	(8,618		)
Derivative contracts, net	—	—		—			—			67			—		—			67
Cash dividends declared ($0.25 per common share)	—	—		—			(87,458		)	—			—		—			(87,458		)
Net income	—	—		—			635,491			—			—		—			635,491
Balance – December 31, 2014	411,779,911	$	412	$	3,230,418		$	3,392,465		$	(209	)	58,415,507		$	(919,230	)	$	5,703,856

 See accompanying Notes to Consolidated Financial Statements.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 1. Significant Accounting Policies

Organization and Nature of Operations

Denbury Resources Inc., a Delaware corporation, is an independent oil and natural gas company with operations focused in two key operating areas: the Gulf Coast and Rocky Mountain regions. Our goal is to increase the value of our properties through a combination of exploitation, drilling and proven engineering extraction practices, with the most significant emphasis relating to CO₂ enhanced oil recovery operations.

Principles of Reporting and Consolidation

The consolidated financial statements herein have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and include the accounts of Denbury and entities in which we hold a controlling financial interest.  Undivided interests in oil and gas joint ventures are consolidated on a proportionate basis.  All intercompany balances and transactions have been eliminated.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amount of certain assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during each reporting period.  Management believes its estimates and assumptions are reasonable; however, such estimates and assumptions are subject to a number of risks and uncertainties that may cause actual results to differ materially from such estimates.  Significant estimates underlying these financial statements include (1) the fair value of financial derivative instruments; (2) the estimated quantities of proved oil and natural gas reserves used to compute depletion of oil and natural gas properties, the related present value of estimated future net cash flows therefrom and the ceiling test; (3) future net cash flow estimates used in the impairment assessment of goodwill and long-lived assets; (4) the estimated quantities of proved and probable CO₂ reserves used to compute depletion of CO₂ properties; (5) accruals related to oil and natural gas sales volumes and revenues, capital expenditures and lease operating expenses; (6) the estimated costs and timing of future asset retirement obligations; (7) estimates made in the calculation of income taxes; and (8) estimates made in determining the fair values for purchase price allocations, including goodwill.  While management is not aware of any significant revisions to any of its estimates, there will likely be future revisions to its estimates resulting from matters such as revisions in estimated oil and natural gas volumes, changes in ownership interests, payouts, joint venture audits, re-allocations by purchasers or pipelines, or other corrections and adjustments common in the oil and natural gas industry, many of which require retroactive application.  These types of adjustments cannot be currently estimated and will be recorded in the period in which the adjustment occurs.

Cash Equivalents

We consider all highly liquid investments to be cash equivalents if they have maturities of three months or less at the date of purchase.

Oil and Natural Gas Properties

Capitalized Costs.  We follow the full cost method of accounting for oil and natural gas properties.  Under this method, all costs related to the acquisition, exploration and development of oil and natural gas reserves are capitalized and accumulated in a single cost center representing our activities, which are undertaken exclusively in the United States.  Such costs include lease acquisition costs, geological and geophysical expenditures, lease rentals on undeveloped properties, costs of drilling both productive and nonproductive wells, capitalized interest on qualifying projects, and general and administrative expenses directly related to exploration and development activities, and do not include any costs related to production, general corporate overhead or similar activities.  We assign the purchase price of oil and natural gas properties we acquire to proved and unevaluated properties based on the estimated fair values as defined in the Financial Accounting Standards Board Codification ("FASC") Fair Value Measurement topic.  Proceeds received from disposals are credited against accumulated costs except when the sale represents a significant

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

disposal of reserves, in which case a gain or loss would be recognized. A disposal of 25% or more of our proved reserves would be considered significant.

Depletion and Depreciation.  The costs capitalized, including production equipment and future development costs, are depleted or depreciated using the unit-of-production method, based on proved oil and natural gas reserves as determined by independent petroleum engineers.  Oil and natural gas reserves are converted to equivalent units on a basis of 6,000 cubic feet of natural gas to one barrel of crude oil.

Under full cost accounting, we may exclude certain unevaluated costs from the amortization base pending determination of whether proved reserves can be assigned to such properties.  The costs classified as unevaluated are transferred to the full cost amortization base as the properties are developed, tested and evaluated.

Ceiling Test. The net capitalized costs of oil and natural gas properties are limited to the lower of unamortized cost or the cost center ceiling.  The cost center ceiling is defined as (1) the present value of estimated future net revenues from proved oil and natural gas reserves before future abandonment costs (discounted at 10%), based on the average first-day-of-the-month oil and natural gas price for each month during a 12-month rolling period prior to the end of a particular reporting period; plus (2) the cost of properties not being amortized; plus (3) the lower of cost or estimated fair value of unproved properties included in the costs being amortized, if any; less (4) related income tax effects.  Our future net revenues from proved oil and natural gas reserves are not reduced for development costs related to the cost of drilling for and developing CO₂ reserves nor those related to the cost of constructing CO₂ pipelines, as those costs have previously been incurred by the Company.  Therefore, we include in the ceiling test, as a reduction of future net revenues, that portion of our capitalized CO₂ costs related to CO₂ reserves and CO₂ pipelines that we estimate will be consumed in the process of producing our proved oil and natural gas reserves.  The fair value of our oil and natural gas derivative contracts is not included in the ceiling test, as we do not designate these contracts as hedge instruments for accounting purposes.  The cost center ceiling test is prepared quarterly.  We did not have a ceiling test write-down during the years ended December 31, 2014, 2013 or 2012. If oil and natural gas prices were to remain at or near late 2014 and early 2015 levels in subsequent periods, which are significantly lower than our 2014 average first-day-of-the-month oil and natural gas prices, we would likely begin recording write-downs due to the full cost ceiling test in the first or second quarter of 2015, and also in subsequent quarterly periods if prices remain low.

Joint Interest Operations.  Substantially all of our oil and natural gas exploration and production activities are conducted jointly with others.  These financial statements reflect only our proportionate interest in such activities, and any amounts due from other partners are included in trade receivables.

Tertiary Injection Costs.  Our tertiary operations are conducted in reservoirs that have already produced significant amounts of oil over many years; however, in accordance with the SEC rules and regulations for recording proved reserves, we cannot recognize proved reserves associated with enhanced recovery techniques, such as CO₂ injection, until we can demonstrate production resulting from the tertiary process or unless the field is analogous to an existing flood.  

We capitalize, as a development cost, injection costs in fields that are in their development stage, which means we have not yet seen incremental oil production due to the CO₂ injections (i.e., a production response).  These capitalized development costs are included in our unevaluated property costs if there are not already proved tertiary reserves in that field.  After we see a production response to the CO₂ injections (i.e., the production stage), injection costs are expensed as incurred, and once proved reserves are recognized, previously deferred unevaluated development costs become subject to depletion.

CO₂ Properties

We own and produce CO₂ reserves, a non-hydrocarbon resource, that are used in our tertiary oil recovery operations on our own behalf and on behalf of other interest owners in enhanced recovery fields, with a portion sold to third-party industrial users.  We record revenue from our sales of CO₂ to third parties when it is produced and sold.  Expenses related to the production of CO₂ are allocated between volumes sold to third parties and volumes consumed internally that are directly related to our tertiary production.  The expenses related to third-party sales are recorded in "CO₂ and helium discovery and operating expenses," and the expenses related to internal use are recorded in "Lease operating expenses" in the Consolidated Statements of Operations or

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

are capitalized as oil and gas properties in our Consolidated Balance Sheets, depending on the stage of the tertiary flood that is receiving the CO₂ (see Tertiary Injection Costs above for further discussion).

Costs incurred to search for CO₂ are expensed as incurred until proved or probable reserves are established.  Once proved or probable reserves are established, costs incurred to obtain those reserves are capitalized and classified as "CO₂ properties" on our Consolidated Balance Sheets.  Capitalized CO₂ costs are aggregated by geologic formation and depleted on a unit-of-production basis over proved and probable reserves.

We own certain interests in the Riley Ridge Federal Unit in Wyoming ("Riley Ridge"), which contains helium and CO₂ reserves (non-hydrocarbon resources) as well as natural gas reserves (a hydrocarbon resource).  It is not possible to separately identify the capitalized costs related to the development of each product in the commingled gas stream; thus, these costs are allocated to each product based on the relative future revenue value of each product line and classified accordingly on the Consolidated Balance Sheets.

Pipelines and Plants

CO₂ used in our tertiary floods is transported to our fields through CO₂ pipelines.  Costs of CO₂ pipelines under construction are not depreciated until the pipelines are placed into service.  Pipelines are depreciated on a straight-line basis over their estimated useful lives, which range from 15 to 50 years.

Pipelines and plants include the Riley Ridge gas processing facility in southwestern Wyoming. Individual components of the Riley Ridge gas processing facility are depreciated on a straight-line basis over their estimated useful lives, which range from 20 to 50 years.

Property and Equipment – Other

Other property and equipment, which includes furniture and fixtures, vehicles, computer equipment and software, and capitalized leases, is depreciated principally on a straight-line basis over each asset's estimated useful life.  Vehicles and furniture and fixtures are generally depreciated over a useful life of five to ten years, and computer equipment and software are generally depreciated over a useful life of three to five years.  Leasehold improvements are amortized over the shorter of the estimated useful life or the remaining lease term.

Leased property meeting certain capital lease criteria is capitalized, and the present value of the related lease payments is recorded as a liability.  Amortization of capitalized leased assets is computed using the straight-line method over the shorter of the estimated useful life or the initial lease term.

Maintenance and repair costs that do not extend the useful life of the property or equipment are charged to expense as incurred.

Goodwill and Other Intangible Assets

Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in the acquisition of a business. Goodwill is not amortized; rather, it is tested for impairment annually during the fourth quarter and when events or changes in circumstances indicate that it is more likely than not the fair value of a reporting unit with goodwill has been reduced below its carrying value. The impairment test requires allocating goodwill and other assets and liabilities to reporting units.  However, we have only one reporting unit.  To assess impairment, we have the option to qualitatively assess if it is more likely than not that the fair value of the reporting unit is less than the carrying value.  Absent a qualitative assessment, or, through the qualitative assessment, if we determine it is more likely than not that the fair value of the reporting unit is less than the carrying value, a quantitative assessment is prepared to calculate the fair market value of the reporting unit.  If it is determined that the fair value of the reporting unit is less than the carrying value, the recorded goodwill is impaired to its implied fair value with a charge to operating expense.  We performed our goodwill impairment assessment as of December 31, 2014. Because our enterprise value (combined market capitalization plus a control premium of 10% and the fair value of our long-term debt) was below the book value of our stockholders' equity and long-term debt as of December 31, 2014, we were required to proceed to step two of the goodwill impairment test.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

In the step two quantitative assessment, we assigned the fair value of the reporting unit (enterprise value) to its assets and liabilities and calculated the implied fair value of goodwill as the excess of fair value of the reporting unit over the amounts assigned to the assets and liabilities. Oil and natural gas reserves, which represent the most significant assets requiring valuation, were estimated using the expected present value of future net cash flows method based on December 31, 2014, NYMEX oil and natural gas futures prices for the next five years, adjusted for current price differentials. In addition to future oil and natural gas pricing, the most significant assumptions impacting the projections of future net cash flows include projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs, projected availability and cost of CO₂, risk adjustment factors applied to probable and possible oil and natural gas reserve cash flows, projected recovery factors of oil and natural gas reserves, and a weighted-average cost of capital discount rate applied to all cash flows. The implied fair value of goodwill calculated in this quantitative assessment significantly exceeded the corresponding book value of goodwill. Therefore, we did not record any goodwill impairment during 2014, nor have we recorded a goodwill impairment historically.

Our intangible assets subject to amortization primarily consist of amounts assigned in purchase accounting to helium production rights at Riley Ridge and a CO₂ purchase contract with ConocoPhillips to offtake CO₂ from the Lost Cabin gas plant in Wyoming and are included in our Consolidated Balance Sheets under the caption "Other assets." We amortize our helium production rights on a unit-of-production basis over the life of the estimated helium reserves and amortize the CO₂ contract intangible asset on a straight-line basis over the contract term. Total amortization expense related to these assets was $2.3 million and $1.3 million during the years ended December 31, 2014 and 2013, respectively. The following table summarizes the carrying values of our intangible assets as of December 31, 2014 and 2013:

In thousands	Helium Production Rights			CO2 Purchase Contract			Total
December 31, 2014
Intangible asset value	$	55,266		$	34,341		$	89,607
Accumulated amortization	(15		)	(3,625		)	(3,640		)
Net book value as of December 31, 2014	$	55,251		$	30,716		$	85,967
December 31, 2013
Intangible asset value	$	55,266		$	33,931		$	89,197
Accumulated amortization	—			(1,319		)	(1,319		)
Net book value as of December 31, 2013	$	55,266		$	32,612		$	87,878

At December 31, 2014, our estimated amortization expense for our intangible assets subject to amortization over the next five years is as follows:

In thousands
2015	$	2,289
2016	2,488
2017	2,788
2018	2,858
2019	2,833

Impairment Assessment of Long-Lived Assets

The portion of our capitalized CO₂ costs related to CO₂ reserves, CO₂ pipelines, and the Riley Ridge gas processing facility that we estimate will be consumed in the process of producing our proved oil and natural gas reserves is included in the full cost pool ceiling test as a reduction to future net revenues.  The remaining net capitalized costs that are not included in the full cost

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

pool ceiling test, and related intangible assets, are subject to long-lived asset impairment testing whenever events or changes in circumstances indicate that the carrying value may not be recoverable.

We perform our long-lived asset impairment test by comparing the net carrying costs of our two long-lived asset groups ((1) Gulf Coast region and (2) Rocky Mountain region) to the respective expected future undiscounted net cash flows that are supported by these long-lived assets which include (1) the production of our probable and possible oil and natural gas reserves and (2) the sale of non-hydrocarbons (CO₂ and helium) to third parties. If the undiscounted net cash flows are below the net carrying costs for an asset group, we must record an impairment loss by the amount, if any, that net carrying costs exceed the fair value of the long-lived asset group.

Given the significant decline in oil prices in the fourth quarter of 2014, we performed a long-lived asset impairment test for both asset groups. Significant assumptions impacting expected future undiscounted net cash flows include projections of future oil and natural gas prices, projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs, projected availability and cost of CO₂, projected recovery factors of tertiary reserves and risk-adjustment factors applied to the cash flows. The undiscounted net cash flows for our asset groups significantly exceeded the net carrying costs; thus, step two of the impairment test was not required and no impairment was recorded.

Asset Retirement Obligations

In general, our future asset retirement obligations relate to future costs associated with plugging and abandoning our oil, natural gas and CO₂ wells, removing equipment and facilities from leased acreage, and returning land to its original condition.  The fair value of a liability for an asset retirement obligation is recorded in the period in which it is incurred, discounted to its present value using our credit-adjusted-risk-free interest rate, and a corresponding amount capitalized by increasing the carrying amount of the related long-lived asset.  The liability is accreted each period, and the capitalized cost is depreciated over the useful life of the related asset.  Revisions to estimated retirement obligations will result in an adjustment to the related capitalized asset and corresponding liability.  If the liability for an oil or natural gas well is settled for an amount other than the recorded amount, the difference is recorded to the full cost pool, unless significant.

Asset retirement obligations are estimated at the present value of expected future net cash flows.  We utilize unobservable inputs in the estimation of asset retirement obligations that include, but are not limited to, costs of labor and materials, profits on costs of labor and materials, the effect of inflation on estimated costs, and the discount rate.  Accordingly, asset retirement obligations are considered a Level 3 measurement under the FASC Fair Value Measurement topic.

Commodity Derivative Contracts

We utilize oil and natural gas derivative contracts to mitigate our exposure to commodity price risk associated with our future oil and natural gas production.  These derivative contracts have historically consisted of options, in the form of price floors, collars or three-way collars, fixed-price swaps and fixed-price swaps enhanced with a sold put.  Our derivative financial instruments are recorded on the balance sheet as either an asset or a liability measured at fair value.  We do not apply hedge accounting to our commodity derivative contracts; accordingly, changes in the fair value of these instruments are recognized in our Consolidated Statements of Operations in the period of change.

Concentrations of Credit Risk

Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash equivalents, trade and accrued production receivables, and the derivative instruments discussed above.  Our cash equivalents represent high-quality securities placed with various investment-grade institutions.  This investment practice limits our exposure to concentrations of credit risk.  Our trade and accrued production receivables are dispersed among various customers and purchasers; therefore, concentrations of credit risk are limited.  We evaluate the credit ratings of our purchasers, and if customers are considered a credit risk, letters of credit are the primary security obtained to support lines of credit.  We attempt to minimize our credit risk exposure to the counterparties of our oil and natural gas derivative contracts through formal credit policies, monitoring procedures and

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

diversification.  All of our derivative contracts are with parties that are lenders under our bank credit facility (or affiliates of such lenders).  There are no margin requirements with the counterparties of our derivative contracts.

Oil and natural gas sales are made on a day-to-day basis or under short-term contracts at the current area market price.  We would not expect the loss of any purchaser to have a material adverse effect upon our operations.  For the year ended December 31, 2014, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (31%), Plains Marketing LP (13%), and ConocoPhillips (12%). For the year ended December 31,2013, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (33%), Plains Marketing LP (15%), and Eighty-Eight Oil LLC (10%). For the year ended December 31,2012, two purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (39%) and Plains Marketing LP (17%).

Revenue Recognition

Revenue Recognition. Revenue is recognized at the time oil and natural gas is produced and sold.  Any amounts due from purchasers of oil and natural gas are included in accrued production receivable.

We follow the sales method of accounting for our oil and natural gas revenue, whereby we recognize revenue on oil or natural gas sold to our purchasers regardless of whether the sales are proportionate to our ownership in the property.  A receivable or liability is recognized only to the extent that we have an imbalance on a specific property greater than the expected remaining proved reserves.  As of December 31, 2014 and 2013, our aggregate oil and natural gas imbalances were not material to our consolidated financial statements.

We recognize revenue and expenses of purchased producing properties at the time we assume effective control, commencing from either the closing or purchase agreement date, depending on the underlying terms and agreements.  We follow the same methodology in reverse when we sell properties by recognizing revenue and expenses of the sold properties until the closing date.

Income Taxes

Income taxes are accounted for using the asset and liability method, under which deferred income taxes are recognized for the future tax effects of temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities using the enacted statutory tax rates in effect at year end.  The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the enactment date.  A valuation allowance for deferred tax assets is recorded when it is more likely than not that the benefit from the deferred tax asset will not be realized.

We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained upon examination by the taxing authorities, based on the technical merits of the position.  The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement.

Net Income Per Common Share

Basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period.  Diluted net income per common share is calculated in the same manner, but includes the impact of potentially dilutive securities. Potentially dilutive securities consist of stock options, stock appreciation rights ("SARs"), nonvested restricted stock and nonvested performance-based equity awards. For each of the three years in the period ended December 31, 2014, there were no adjustments to net income for purposes of calculating basic and diluted net income per common share.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

The following is a reconciliation of the weighted average shares used in the basic and diluted net income per common share calculations for the periods indicated:

	Year Ended December 31,
In thousands	2014	2013	2012
Basic weighted average common shares outstanding	348,962	366,659	385,205
Potentially dilutive securities
Restricted stock, stock options, SARs and performance-based equity awards	2,205	3,218	3,733
Diluted weighted average common shares outstanding	351,167	369,877	388,938

Basic weighted average common shares exclude shares of nonvested restricted stock. As these restricted shares vest, they will be included in the shares outstanding used to calculate basic net income per common share (although all non-performance-based restricted stock is issued and outstanding upon grant).  For purposes of calculating diluted weighted average common shares, the nonvested restricted stock, stock options, SARs, and performance-based equity awards are included in the computation using the treasury stock method, with the deemed proceeds equal to the average unrecognized compensation during the period, the purchase price that the grantee will pay in the future for stock options, and any estimated future tax consequences recognized directly in equity. Stock options and SARs of 4.8 million, 3.6 million and 4.1 million shares for the years ended December 31, 2014, 2013 and 2012, respectively, could potentially dilute earnings per share in the future, but were excluded from the computation of diluted net income per share as their effect would have been antidilutive.

Environmental and Litigation Contingencies

The Company makes judgments and estimates in recording liabilities for contingencies such as environmental remediation or ongoing litigation.  Liabilities are recorded when it is both probable that a loss has been incurred and such loss is reasonably estimable.  Assessments of liabilities are based on information obtained from independent and in-house experts, loss experience in similar situations, actual costs incurred, and other case-by-case factors.  Any related insurance recoveries are recognized in our financial statements during the period received or at the time receipt is determined to be virtually certain.

Recent Accounting Pronouncements

Revenue Recognition. In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). ASU 2014-09 amends the guidance for revenue recognition to replace numerous, industry-specific requirements. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU implements a five-step process for customer contract revenue recognition that focuses on transfer of control, as opposed to transfer of risk and rewards. The amendment also requires enhanced disclosures regarding the nature, amount, timing and uncertainty of revenues and cash flows arising from contracts with customers. The amendments in this ASU are effective for reporting periods beginning after December 15, 2016, and early adoption is prohibited. Entities can transition to the standard either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. Management is currently assessing the impact the adoption of ASU 2014-09 will have on our consolidated financial statements.

Discontinued Operations. In April 2014, the FASB issued ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity ("ASU 2014-08"). ASU 2014-08 amends the definition of a discontinued operation under the Discontinued Operations subtopic of the FASC and requires entities to disclose additional information about discontinued operations and disposal transactions that do not meet the discontinued operations criteria. ASU 2014-08 will be applied prospectively for disposals of components of an entity and businesses or nonprofit activities that meet the criteria to be classified as held for sale and occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. The adoption of ASU 2014-08 is currently not expected to have a material effect on our consolidated financial statements.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 2. Acquisition

Fair Value

The FASC Fair Value Measurement topic defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (often referred to as the "exit price"). The fair value measurement is based on the assumptions of market participants and not those of the reporting entity. Therefore, entity-specific intentions do not impact the measurement of fair value unless those assumptions are consistent with market participant views.

The fair value of oil and natural gas properties is based on significant inputs not observable in the market, which the FASC Fair Value Measurement topic defines as Level 3 inputs.  Key assumptions may include (1) NYMEX oil and natural gas futures prices (this input is observable); (2) dollar-per-acre values of recent sale transactions (this input is observable); (3) projections of the estimated quantities of oil and natural gas reserves, including those classified as proved, probable and possible; (4) estimated oil and natural gas pricing differentials; (5) projections of future rates of production; (6) timing and amount of future development and operating costs; (7) projected costs of CO₂ (to a market participant); (8) projected reserve recovery factors; and (9) risk-adjusted discount rates.

2013 Acquisition

On March 27, 2013, we acquired producing assets in the Cedar Creek Anticline ("CCA") of Montana and North Dakota from a wholly-owned subsidiary of ConocoPhillips for $1.0 billion after final closing adjustments. This acquisition was not reflected as an Investing Activity on our Consolidated Statement of Cash Flows for the year ended December 31, 2013 due to the movement of the cash used to acquire these assets through a qualified intermediary to facilitate a like-kind-exchange treatment under federal income tax rules. This acquisition meets the definition of a business under the FASC Business Combinations topic. The fair value of assets acquired and liabilities assumed in this acquisition have been finalized, and no adjustments have been made to fair value amounts previously disclosed in our financial statements for the year ended December 31, 2013. The following table presents a summary of the fair value of assets acquired and liabilities assumed in the CCA acquisition:

In thousands
Consideration
Cash consideration (1)	$	1,001,707
Fair value of assets acquired and liabilities assumed
Oil and natural gas properties
Proved properties	783,507
Unevaluated properties	222,820
Other assets	2,589
Asset retirement obligations	(7,209		)
	$	1,001,707

(1) See Note 6, Income Taxes, for additional information regarding the like-kind-exchange transaction utilized to fund this purchase and Note 13, Supplemental Cash Flow Information, for supplemental cash flow information regarding the cash payment.

For the period from March 27, 2013, to December 31, 2013, we recognized $268.3 million of oil, natural gas, and related product sales from the property interests acquired in the CCA acquisition; during that same period, we recognized $194.2 million of net field operating income (defined as oil, natural gas, and related product sales less lease operating expenses, production and ad valorem taxes, and marketing expenses) related to the CCA acquisition.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Unaudited Pro Forma Acquisition Information.  The following combined pro forma total revenues and other income and net income are presented as if the previously discussed CCA acquisition had occurred on January 1, 2013:

	Year Ended
In thousands, except per-share data	December 31, 2013
Pro forma total revenues and other income	$	2,599,301
Pro forma net income	439,801
Pro forma net income per common share
Basic	$	1.20
Diluted	1.19

Note 3. Asset Retirement Obligations

The following table summarizes the changes in our asset retirement obligations for the years ended December 31, 2014 and 2013:

	Year Ended December 31,
In thousands	2014			2013
Beginning asset retirement obligations	$	126,301		$	106,430
Liabilities incurred and assumed during period	7,798			22,216
Revisions in estimated retirement obligations	(1,298		)	4,730
Liabilities settled and sold during period	(13,576		)	(15,523		)
Accretion expense	8,870			8,448
Ending asset retirement obligations	128,095			126,301
Less: current asset retirement obligations (1)	(1,684		)	(6,413		)
Long-term asset retirement obligations	$	126,411		$	119,888

(1) Included in "Accounts payable and accrued liabilities" in our Consolidated Balance Sheets.

Liabilities incurred during 2014 and 2013 generally relate to the drilling of incremental wells, and liabilities assumed during 2013 include the purchase of additional interests in the CCA.

We have escrow accounts that are legally restricted for certain of our asset retirement obligations.  The balances of these escrow accounts were $37.1 million and $36.0 million at December 31, 2014 and 2013, respectively.  These balances are primarily invested in U.S. Treasury bonds, are recorded at amortized cost and are included in "Other assets" in our Consolidated Balance Sheets.  The carrying value of these investments approximates their estimated fair market value at December 31, 2014 and 2013.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 4. Property and Equipment

The following table presents a summary of our net property and equipment balances as of December 31, 2014 and 2013:

	December 31,
In thousands	2014			2013
Oil and natural gas properties
Proved properties	$	9,782,337		$	8,945,326
Unevaluated properties	918,406			780,481
Total	10,700,743			9,725,807
Accumulated depletion and depreciation	(3,679,883		)	(3,219,500		)
Net oil and natural gas properties	7,020,860			6,506,307
CO2 properties
CO2 properties	1,162,538			1,117,167
Accumulated depletion and depreciation	(183,646		)	(150,968		)
Net CO2 properties	978,892			966,199
Pipelines and plants
CO2 pipelines (1)	1,733,562			1,681,774
Plants	536,002			527,786
Total	2,269,564			2,209,560
Accumulated depletion and depreciation	(182,385		)	(134,697		)
Net plants and pipelines	2,087,179			2,074,863
Other property and equipment
Other property and equipment	468,051			466,969
Accumulated depletion and depreciation	(202,738		)	(163,060		)
Net other property and equipment	265,313			303,909
Net property and equipment	$	10,352,244		$	9,851,278

(1) Amount includes $98.5 million of CO₂ pipelines at December 31, 2014 that were under construction and not subject to depreciation during 2014.

A summary of the unevaluated property costs excluded from oil and natural gas properties being amortized at December 31, 2014, and the year in which the costs were incurred follows:

	December 31, 2014
	Costs Incurred During:
In thousands	2014		2013		2012		2011 and Prior		Total
Property acquisition costs	$	6,500	$	215,822	$	102,377	$	329,840	$	654,539
Exploration and development	125,783		40,835		22,080		10,361		199,059
Capitalized interest	21,807		24,898		12,084		6,019		64,808
Total	$	154,090	$	281,555	$	136,541	$	346,220	$	918,406

Our 2013 property acquisition costs were primarily related to the fair value allocated to the purchase of additional interests in the CCA. Our 2012 property acquisition costs were primarily related to the fair value allocated to our Hartzog Draw and Thompson fields.  Property acquisition costs for 2011 and prior were primarily related to the fair value allocated to CO₂ tertiary potential at our CCA properties, acquired as part of the merger with Encore Acquisition Company ("Encore"), as well as CO₂

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

tertiary potential at Conroe Field. Exploration and development costs shown as unevaluated properties are primarily associated with our tertiary oil fields that are under development but did not have proved reserves at December 31, 2014.  The most significant development costs incurred during 2014 relate to development in preparation for the CO₂ floods at Webster and Grieve fields, with the more significant development costs incurred during 2013, 2012 and 2011 relating to development in preparation for the CO₂ flood at Grieve field. We have not yet recognized proved reserves in these fields.

Costs are transferred into the amortization base on an ongoing basis as projects are evaluated and proved reserves established or impairment determined.  We review the excluded properties for impairment at least annually.  We currently estimate that evaluation of the majority of these properties and the inclusion of their costs in the amortization base is expected to be completed withinfivetotenyears.  Until we are able to determine whether there are any proved reserves attributable to the above costs, we are not able to assess the future impact on the amortization rate of the full cost pool.

Note 5. Long-Term Debt

The following long-term debt and capital lease obligations were outstanding as of December 31, 2014 and 2013:

	December 31,
In thousands	2014			2013
Bank Credit Agreement	$	395,000		$	340,000
8¼% Senior Subordinated Notes due 2020	—			996,273
6⅜% Senior Subordinated Notes due 2021	400,000			400,000
5½% Senior Subordinated Notes due 2022	1,250,000			—
4⅝% Senior Subordinated Notes due 2023	1,200,000			1,200,000
Other Senior Subordinated Notes, including premium of $11 and $16, respectively	2,746			3,823
Pipeline financings	220,583			228,167
Capital lease obligations	103,041			128,519
Total	3,571,370			3,296,782
Less: current obligations	(35,470		)	(36,157		)
Long-term debt and capital lease obligations	$	3,535,900		$	3,260,625

The ultimate parent company in our corporate structure, Denbury Resources Inc. ("DRI"), is the sole issuer of all of our outstanding senior subordinated notes.  DRI has no independent assets or operations.  Each of the subsidiary guarantors of such notes is 100% owned, directly or indirectly, by DRI, and the guarantees of such notes are full and unconditional and joint and several; any subsidiaries of DRI that are not subsidiary guarantors of such notes are minor subsidiaries.

Bank Credit Facility

In December 2014, we entered into an Amended and Restated Credit Agreement with JPMorgan Chase Bank, N.A. ("JPMorgan"), as administrative agent, and other lenders party thereto (the "Bank Credit Agreement") to replace our previous credit agreement that was set to mature in May 2016 (the "Previous Bank Credit Agreement"). The Bank Credit Agreement is a senior secured revolving credit facility with an initial borrowing base of $3.0 billion and aggregate lender commitments of $1.6 billion, and reduces our borrowing costs on the drawn spread. The $1.6 billion of aggregate lender commitments is consistent with the Previous Bank Credit Agreement and may be increased up to the borrowing base amount with approval and incremental commitments from the existing lenders or new lenders. Additionally, under the Bank Credit Agreement, letters of credit are available in an aggregate amount not to exceed $50 million, and short-term swingline loans are available in an aggregate amount not to exceed $25 million, each subject to the available commitments under the Bank Credit Agreement. Availability under the Bank Credit Agreement is subject to a borrowing base, which is redetermined annually beginning May 1, 2015. The borrowing base is adjusted at the lenders' discretion and is based, in part, upon external factors over which we have no control (including approval by the lenders party to the Bank Credit Agreement). The lenders may also reduce the borrowing base if between scheduled annual redeterminations we sell borrowing base properties and/or cancel commodity derivative positions with an aggregate value

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

in excess of 10% of the then-effective borrowing base. If our outstanding debt under the Bank Credit Agreement exceeds the then-effective borrowing base, we would be required to repay the excess amount over a period not to exceed six months. Loans under the Bank Credit Agreement mature in December 2019.

Our obligations under the Bank Credit Agreement are guaranteed jointly and severally by each subsidiary of DRI that is 100% owned, directly or indirectly, by DRI. In addition, the Bank Credit Agreement is secured by (1) a significant portion of our proved oil and natural gas properties, which are held through its restricted subsidiaries; (2) the pledge of equity interests of such subsidiaries; and (3) a pledge of commodity derivative agreements of DRI and such subsidiaries (as applicable).

The Bank Credit Agreement contains several restrictive covenants including, among others:

• a requirement to maintain a maximum permitted ratio of consolidated total net debt to consolidated EBITDAX (as defined in the Bank Credit Agreement) of DRI and its wholly-owned subsidiaries of not more than 4.25 to 1.0;

• a requirement to maintain a current ratio, as determined under the Bank Credit Agreement, of not less than 1.0 to 1.0; and

• a limit on our ability to, among other things, incur indebtedness; grant liens; engage in certain mergers, consolidations, liquidations and dissolutions; engage in sales of assets; make acquisitions and investments; make distributions and dividends; and enter into commodity derivative agreements, in each case subject to customary exceptions.

As of December 31, 2014, we were in compliance with all debt covenants under the Bank Credit Agreement. Under the Bank Credit Agreement, we are permitted to make unlimited distributions in the form of repurchases of Denbury common stock and payments of cash dividends on Denbury common stock, provided that (1) prior to and after making any such distribution, no event of default exists and (2) we have minimum availability of at least 10% of the "loan limit" under the Bank Credit Agreement (currently the aggregate lender commitments of $1.6 billion) on the date such distribution is made (calculated on a pro forma basis after giving effect to the making of any such distribution).

Loans under the Bank Credit Agreement are subject to varying rates of interest based on either (1) for ABR Loans, a base rate determined under the Bank Credit Agreement (the "ABR") plus an applicable margin ranging from 0.25% to 1.25% per annum, or (2) for LIBOR Loans, the LIBOR rate plus an applicable margin ranging from 1.25% to 2.25% per annum (capitalized terms as defined in the Bank Credit Agreement).  The weighted average interest rate on borrowings outstanding as of December 31, 2014 under the Bank Credit Agreement was 1.9%. The undrawn portion of the aggregate lender commitments under the Bank Credit Agreement is subject to a commitment fee ranging from 0.3% to 0.375% per annum.

Senior Subordinated Notes

2014 Repurchase and Redemption of 8¼% Senior Subordinated Notes due 2020. On April 30, 2014, we completed a cash tender offer for our 8¼% Senior Subordinated Notes due 2020 (the "8¼% Notes") and purchased a total of $815.2 million principal amount of these notes. We received sufficient consents in the solicitation to amend the indenture governing the 8¼% Notes by entering into a supplemental indenture, which eliminated most of the restrictive covenants and certain events of default. The purchase under this tender offer was funded by a portion of the proceeds from the issuance of our 5½% Notes (defined below). On April 30, 2014, we issued a notice of redemption and fully funded the redemption of all of the remaining outstanding 8¼% Notes ($181.1 million principal amount) at an amount equal to 100% of their principal amount plus the required make-whole premium and accrued interest up to, but excluding, the May 30, 2014, redemption date, resulting in a satisfaction and discharge of the indenture for the 8¼% Notes.

We recognized a $113.9 million loss associated with the debt repurchases during the second quarter of 2014, which loss consists of both premium payments made to repurchase or redeem the 8¼% Notes and the elimination of unamortized debt issuance costs related to these notes. The loss is included in our Consolidated Statements of Operations under the caption "Loss on early extinguishment of debt," and premium payments made to repurchase the notes are classified as a financing cash outflow on our Consolidated Statements of Cash Flows under the caption "Premium paid on repayment of senior subordinated notes."

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

6⅜% Senior Subordinated Notes due 2021. In February 2011, we issued $400 million of 6⅜% Senior Subordinated Notes due 2021 (the "6⅜% Notes").  The 6⅜% Notes, which bear interest at a rate of 6.375% per annum, were sold at par.

The 6⅜% Notes mature on August 15, 2021, and interest is payable on February 15 and August 15 of each year.  We may redeem the 6⅜% Notes in whole or in part at our option beginning August 15, 2016, at a redemption price of 103.188% of the principal amount, and at declining redemption prices thereafter, as specified in the indenture. Prior to August 15, 2016, we may redeem 100% of the principal amount of the 6⅜% Notes at a price equal to 100% of the principal amount plus a "make-whole" premium and accrued and unpaid interest.  The 6⅜% Notes are not subject to any sinking fund requirements.

5½% Senior Subordinated Notes due 2022. In April 2014, we issued $1.25 billion of 5½% Senior Subordinated Notes due 2022 (the "5½% Notes"). The 5½% Notes, which bear interest at a rate of 5.5% per annum, were sold at par. The net proceeds, after issuance costs, of $1.23 billion were used to repurchase or redeem our outstanding 8¼% Notes, which were issued in 2010 (see 2014 Repurchase and Redemption of 8¼% Senior Subordinated Notes due 2020 above), and to pay down a portion of outstanding borrowings under our Previous Bank Credit Agreement.

The 5½% Notes mature on May 1, 2022, and interest is payable on May 1 and November 1 of each year. We may redeem the 5½% Notes in whole or in part at our option beginning May 1, 2017, at a redemption price of 104.125% of the principal amount, and at declining redemption prices thereafter, as specified in the indenture. Prior to May 1, 2017, we may at our option redeem up to an aggregate of 35% of the principal amount of the 5½% Notes at a price of 105.5% of par with the proceeds of certain equity offerings. In addition, at any time prior to May 1, 2017, we may redeem 100% of the principal amount of the 5½% Notes at a price equal to 100% of the principal amounts plus a "make-whole" premium and accrued and unpaid interest. The 5½% Notes are not subject to any sinking fund requirements.

4⅝% Senior Subordinated Notes due 2023. In February 2013, we issued $1.2 billion of 4⅝% Senior Subordinated Notes due 2023 (the "4⅝% Notes"). The 4⅝% Notes, which bear interest at a rate of 4.625% per annum, were sold at par. The net proceeds, after issuance costs, of $1.18 billion were used to repurchase or redeem our 9½% Senior Subordinated Notes due 2016 (the "9½% Notes") and 9¾% Senior Subordinated Notes due 2016 (the "9¾% Notes") (see 2013 Repurchase and Redemption of 9½% Notes and 9¾% Notes below) and to pay down a portion of outstanding borrowings under our Previous Bank Credit Agreement.

The 4⅝% Notes mature on July 15, 2023, and interest is payable on January 15 and July 15 of each year. We may redeem the 4⅝% Notes in whole or in part at our option beginning January 15, 2018, at a redemption price of 102.313% of the principal amount, and at declining redemption prices thereafter, as specified in the indenture. Prior to January 15, 2016, we may at our option redeem up to an aggregate of 35% of the principal amount of the 4⅝% Notes at a redemption price of 104.625% of par with the proceeds of certain equity offerings. In addition, at any time prior to January 15, 2018, we may redeem 100% of the principal amount of the 4⅝% Notes at a redemption price equal to 100% of the principal amount plus a "make-whole" premium and accrued and unpaid interest. The 4⅝% Notes are not subject to any sinking fund requirements.

Restrictive Covenants in Indentures for Senior Subordinated Notes. Each of the indentures for the 6⅜% Notes, 5½% Notes and 4⅝% Notes contains certain covenants that are generally consistent and that restrict our ability and the ability of our restricted subsidiaries to take or permit certain actions, including restrictions on our ability and the ability of our restricted subsidiaries to (1) incur additional debt; (2) make investments; (3) create liens on our assets or the assets of our restricted subsidiaries; (4) create restrictions on the ability of our restricted subsidiaries to pay dividends or make other payments to DRI or other restricted subsidiaries; (5) engage in transactions with our affiliates; (6) transfer or sell assets or subsidiary stock; (7) consolidate, merge or transfer all or substantially all of our assets and the assets of our restricted subsidiaries; and (8) make restricted payments (which includes paying dividends on our common stock or redeeming, repurchasing or retiring such stock or subordinated debt), provided that the restricted payments covenant in the indentures for the 5½% and 4⅝% Notes (the "5½% and 4⅝% Indentures") permits us in certain circumstances to make unlimited restricted payments so long as we maintain a ratio of total debt to EBITDA (both as defined in the 5½% and 4⅝% Indentures) of at least 2.5 to 1.0 (both before and after giving effect to any restricted payment), although we will not be able to realize the practical benefit of the restricted payment covenant flexibility in the 5½% and 4⅝% Indentures until the 6⅜% Notes have been redeemed or retired. As of December 31, 2014, we were in compliance with all debt covenants under the indentures related to our senior subordinated notes.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

2013 Repurchase and Redemption of 9½% Notes and 9¾% Notes. Pursuant to cash tender offers, during 2013, we repurchased $426.4 million in principal of our 9¾% Notes and $224.9 million in principal of our 9½% Notes. We recognized a $44.7 million loss during the year ended December 31, 2013, associated with the debt repurchases, consisting of both premium payments made to repurchase or redeem the 9½% Notes and 9¾% Notes and the elimination of unamortized debt issuance costs, discounts and premiums related to these notes. The loss is included in our Consolidated Statements of Operations under the caption "Loss on early extinguishment of debt," and premium payments made to repurchase the notes are classified as a financing cash outflow on our Consolidated Statements of Cash Flows under the caption "Premium paid on repayment of senior subordinated notes."

Pipeline Financings

In May 2008, we closed two transactions with Genesis Energy, L.P. ("Genesis") involving two of our pipelines.  The NEJD Pipeline system included a 20-year financing lease, and the Free State Pipeline included a long-term transportation service agreement.  These transactions are both accounted for as financing leases.

Debt Issuance Costs

In connection with the issuance of our outstanding long-term debt, we have incurred debt issuance costs, which are being amortized to interest expense using the straight line or effective interest method over the term of each related facility or borrowing.  Remaining unamortized debt issuance costs were $57.3 million and $58.9 million at December 31, 2014 and 2013, respectively.  These balances are included in "Other assets" in our Consolidated Balance Sheets.

Indebtedness Repayment Schedule

At December 31, 2014, our indebtedness, including our capital and financing lease obligations but excluding the discount and premium on our senior subordinated debt, is payable over the next five years and thereafter as follows:

In thousands
2015	$	35,470
2016	38,517
2017	37,087
2018	33,885
2019	422,879
Thereafter	3,003,521
Total indebtedness	$	3,571,359

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 6. Income Taxes

Our income tax provision (benefit) is as follows:

	Year Ended December 31,
In thousands	2014			2013			2012
Current income tax expense (benefit)
Federal	$	(42,500	)	$	393		$	57,720
State	(407		)	9,864			18,034
Total current income tax expense (benefit)	(42,907		)	10,257			75,754
Deferred income tax expense (benefit)
Federal	400,544			222,559			239,862
State	29,429			(33		)	15,881
Total deferred income tax expense	429,973			222,526			255,743
Total income tax expense	$	387,066		$	232,783		$	331,497

At December 31, 2014, we had tax-effected federal net operating loss carryforwards ("NOLs") totaling $44.1 million, state NOLs totaling $43.3 million, an estimated $42.8 million of enhanced oil recovery credits to carry forward related to our tertiary operations, and $34.8 million of alternative minimum tax credits.  Our state NOLs expire in various years, starting in 2020, although most do not begin to expire until 2024. Our enhanced oil recovery credits will begin to expire in 2024.

At December 31, 2014, we had $13.5 million of excess tax benefits related to stock-based compensation that were not recorded as an increase to additional paid-in capital in the period that the stock award vested and/or was exercised. At the time these excess tax benefits reduce current taxes payable and, thus, are deemed to be realized by the Company, a corresponding increase to additional paid-in capital will be recognized.

Deferred income taxes reflect the available tax carryforwards and the temporary differences based on tax laws and statutory rates in effect at the December 31, 2014 and 2013 balance sheet dates.  We believe that we will be able to realize all of our deferred tax assets at December 31, 2014, and, therefore, have provided no valuation allowance against our deferred tax assets.

For federal income tax purposes, we structured the 2012 divestitures of our Bakken area assets and certain non-core assets as like-kind-exchange transactions for interests acquired in Thompson, Webster, Hartzog Draw and LaBarge fields in 2012 and the CCA acquisition in 2013 (see Note 2, Acquisition), thereby deferring the majority of the taxable gain on those divestitures. The higher level of current taxes during 2012 is primarily due to the taxable gain recognized in the late-2012 sale and exchange transaction with Exxon Mobil Corporation and its wholly-owned subsidiary XTO Energy Inc. (the "Bakken Exchange Transaction") that we were unable to defer through a like-kind-exchange transaction.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Significant components of our deferred tax assets and liabilities as of December 31, 2014 and 2013 are as follows:

	December 31,
In thousands	2014			2013
Deferred tax assets
Loss carryforwards – federal	$	44,076		$	20,247
Loss carryforwards – state	43,270			41,379
Tax credit carryover	34,837			34,837
Derivative contracts	—			21,341
Enhanced oil recovery credit carryforwards	42,817			14,974
Stock-based compensation	29,994			34,635
Other	32,656			37,679
Total deferred tax assets	227,650			205,092
Deferred tax liabilities
Property and equipment	(2,806,850		)	(2,541,426		)
Derivative contracts	(185,385		)	—
Other	(11,984		)	(10,206		)
Total deferred tax liabilities	(3,004,219		)	(2,551,632		)
Total net deferred tax liability	$	(2,776,569	)	$	(2,346,540	)

Our reconciliation of income tax expense computed by applying the U.S. federal statutory rate and the reported effective tax rate on income from continuing operations is as follows:

	Year Ended December 31,
In thousands	2014			2013			2012
Income tax provision calculated using the federal statutory income tax rate	$	357,895		$	224,833		$	299,900
State income taxes, net of federal income tax benefit	25,368			13,518			30,955
Effect of statutory rate change	4,225			(4,178		)	(429		)
Other	(422		)	(1,390		)	1,071
Total income tax expense	$	387,066		$	232,783		$	331,497

We file consolidated and separate income tax returns in the U.S. federal jurisdiction and in many state jurisdictions.  The statutes of limitation for our income tax returns for tax years ending prior to 2011 have lapsed and therefore are not available for examination by respective taxing authorities. We have not paid any significant interest or penalties associated with our income taxes.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 7. Stockholders' Equity

Dividends

During 2014, we paid aggregate cash dividends of $87.0 million to holders of our outstanding common stock at a quarterly rate of $0.0625 per outstanding common share, or an annual rate of $0.25 per common share. See Note 14, Subsequent Events, for details regarding the dividend declared in the first quarter of 2015.

Stock Repurchase Program

In October 2011, we commenced a common share repurchase program for up to $500 million of Denbury common shares, as approved by the Company's Board of Directors.  During 2012 and 2013, the Board of Directors increased the dollar amount of Denbury common shares that could be purchased under the program to an aggregate of up to $1.162 billion. The program has no pre-established ending date and may be suspended or discontinued at any time.  In November 2014, the Company's Board of Directors suspended the common share repurchase program in light of commodity price uncertainty and to maintain our solid financial position. We are not obligated to repurchase any dollar amount or specific number of shares of our common stock under the program.  The following table presents a summary of repurchases under our share repurchase program:

	Total Repurchases Since Inception		Year Ended December 31,
In thousands, except per-share data			2014		2013		2012
Total amount repurchased	$	940,021	$	200,369	$	277,768	$	266,657
Weighted average price per share	$	15.68	$	16.16	$	16.87	$	15.71
Denbury common stock repurchased (shares)	59,957		12,398		16,469		16,978

As of December 31, 2014, an additional $221.9 million remains authorized for purchases of common stock under this repurchase program (but subject to the current suspension of this program by the Company's Board of Directors in November 2014). We account for treasury stock using the cost method and include treasury stock as a component of stockholders' equity.

Employee Stock Purchase Plan

We have an Employee Stock Purchase Plan that is authorized to issue up to 11,900,000 shares of common stock.  As of December 31, 2014, there were 354,074 authorized shares remaining to be issued under the plan.  We intend to increase the number of shares authorized for issuance under this plan, subject to shareholder approval at our 2015 annual meeting. In accordance with the plan, eligible employees may contribute up to 10% of their base salary, and we match 75% of their contribution.  The combined funds are used to purchase previously unissued Denbury common stock or treasury stock that we purchased in the open market for that purpose, in either case, based on the market value of our common stock at the end of each quarter.  We recognize compensation expense for the Company match portion, which totaled $7.0 million, $6.5 million and $5.7 million for the years ended December 31, 2014, 2013 and 2012, respectively.  This plan is administered by the Compensation Committee of our Board of Directors.

401(k) Plan

We offer a 401(k) plan to which employees may contribute tax-deferred earnings subject to IRS limitations.  We match 100% of an employee's contribution, up to 6% of compensation, as defined by the plan, which is vested immediately.  During 2014, 2013 and 2012, our matching contributions to the 401(k) Plan were approximately $9.9 million, $9.0 million and $8.0 million, respectively.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 8. Stock Compensation Plans

Stock Incentive Plans

We have two stock compensation plans.  The first plan (providing only for the issuance of stock options) has been in existence since 1995 (the "1995 Plan") and expired in August 2005 (although options granted under the 1995 Plan prior to that time can remain outstanding for up to 10 years).  The second plan, the 2004 Omnibus Stock and Incentive Plan (the "2004 Plan"), was approved by the stockholders in May 2004 and will expire in May 2024.  The 2004 Plan provides for the issuance of incentive and non-qualified stock options, restricted stock awards, restricted stock units, SARs settled in stock, and performance-based awards that may be issued to officers, employees, directors and consultants.  Awards covering a total of 34.5 million shares of common stock have been authorized for issuance pursuant to the 2004 Plan, of which awards covering no more than 27.2 million shares may be issued in the form of restricted stock or performance-based awards.  At December 31, 2014, 9.7 million shares were available under the 2004 Plan for future issuance of awards, all of which could be issued in the form of restricted stock or performance-based awards.  Our incentive compensation program is administered by the Compensation Committee of our Board of Directors.

Prior to January 1, 2006, we granted incentive and non-qualified stock options to our employees.  Effective January 1, 2006, we completely replaced the use of stock options for employees with SARs settled in stock, as SARs are less dilutive to our stockholders while providing an employee with essentially the same economic benefits as stock options.  The stock options and SARs generally become exercisable over a three- or four-year vesting period, with the specific terms of vesting determined at the time of grant based on guidelines established by the Compensation Committee of the Board of Directors.  The stock options and SARs expire over terms not to exceed 10 years from the date of grant, 90 days after termination of employment, 90 days or one year after permanent disability, depending on the plan, or one year after the death of the optionee.  The stock options and SARs are granted with a strike price equal to the fair market value at the time of grant, which is defined in the 2004 Plan as the closing price on the NYSE on the date of grant.

Holders of non-performance-based restricted stock awards have the rights and privileges of owning the shares (including voting rights) except that the holders are not entitled to delivery of a portion thereof until certain requirements are met.  Beginning in 2014, non-performance-based restricted stock awards granted by the Company provide the holders with forfeitable dividend rights until the award vests. Non-performance-based restricted stock awards vest over three-to-four-year vesting periods, with the specific terms of vesting determined at the time of grant.

Annually, the Board of Directors grants performance-based equity awards to officers of Denbury.  These performance-based awards generally vest over 1.25 to 3.25 years, and the number of performance-based shares earned (and eligible to vest) during the performance period will depend upon two sets of factors: (1) our level of success in achieving specifically identified performance targets ("Performance-Based Operational Awards") and (2) performance of our stock relative to that of a designated peer group ("Performance-Based TSR Awards").  Generally, one-half of the maximum number of shares that could be earned under the performance-based awards will be earned for performance at the designated target levels (100% target vesting levels) or upon any earlier change of control, and twice the target number of shares will be earned if the maximum target levels are met.  If performance is below the designated minimum levels for all performance targets, no performance-based shares will be earned.  Performance-Based Operational Awards are valued using the fair market value of Denbury stock on the grant date, and Performance-Based TSR Awards are valued using a Monte Carlo simulation.

Stock-based compensation expense associated with our field employees is included in "Lease operating expenses," while such expense associated with non-field employees is included in "General and administrative expenses" in the Consolidated Statements of Operations.  Stock-based compensation associated with our employees involved in exploration and drilling activities is capitalized as part of "Oil and natural gas properties" in the Consolidated Balance Sheets.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Stock-based compensation costs for the years ended December 31, 2014, 2013 and 2012, are as follows:

	Year Ended December 31,
In thousands	2014		2013		2012
Stock-based compensation expensed
General and administrative expenses	$	27,789	$	30,429	$	26,463
Lease operating expenses	2,724		2,574		2,847
Total stock-based compensation expensed	30,513		33,003		29,310
Stock-based compensation capitalized	9,019		9,088		8,587
Total cost of stock-based compensation arrangements	$	39,532	$	42,091	$	37,897
Income tax benefit recognized for stock-based compensation arrangements	$	11,595	$	12,541	$	11,284

Stock Options and SARs

The fair value of each SAR award is estimated on the date of grant using the Black-Scholes option pricing model with the assumptions noted in the following table.  The risk-free rate for periods within the contractual life of the SAR is based on the U.S. Treasury yield curve in effect at the time of grant.  The expected life of SARs granted was derived from examination of our historical SAR grants and subsequent exercises.  The contractual terms (cliff vesting and graded vesting) are evaluated separately for the expected life, as the exercise behavior for each is different.  Expected volatilities are based on the historical volatility of our common stock.

	Year Ended December 31,
	2014			2013			2012
Weighted average fair value of SARs granted	$	3.55		$	6.72		$	8.90
Risk-free interest rate	1.31		%	0.67		%	0.79		%
Expected life	3.8 to 4.0 years			3.6 to 4.8 years			4.0 to 5.0 years
Expected volatility	38.0		%	50.4		%	64.9		%
Dividend yield	3.10		%	—		%	—		%

The following is a summary of our stock option and SAR activity:

	Number of Awards		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2013	8,986,915		$	16.00
Granted	555,786		14.60
Exercised	(1,612,822	)	10.23
Forfeited	(136,493	)	17.03
Expired	(324,653	)	21.02
Outstanding at December 31, 2014	7,468,733		16.90		2.8	$	178
Exercisable at end of period	5,846,933		$	17.05	2.2	$	74

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

The following is a summary of the total intrinsic value of stock options and SARs exercised and grant-date fair value of stock options and SARs vested:

	Year Ended December 31,
In thousands	2014		2013		2012
Intrinsic value of stock options and SARs exercised	$	7,985	$	17,287	$	17,315
Grant-date fair value of stock options and SARs vested	9,998		12,852		26,391

As of December 31, 2014, there was $3.5 million of total compensation cost to be recognized in future periods related to nonvested share-based SAR compensation arrangements.  The cost is expected to be recognized over a weighted-average period of 1.6 years.  The following is a summary of cash received from stock option exercises under share-based payment arrangements and tax benefits realized from the exercises of stock options and SARs:

	Year Ended December 31,
In thousands	2014		2013		2012
Cash received from stock option exercises	$	7,022	$	5,487	$	6,022
Tax benefit realized for the exercises of stock options and SARs	212		437		458

Restricted Stock – 2004 Plan

As of December 31, 2014, there was $27.7 million of unrecognized compensation expense related to nonvested non-performance-based restricted stock grants.  This unrecognized compensation cost is expected to be recognized over a weighted-average period of 1.8 years.  The following is a summary of the total vesting date fair value of non-performance-based restricted stock under the 2004 Plan:

	Year Ended December 31,
In thousands	2014		2013		2012
Fair value of restricted stock vested	$	24,780	$	21,529	$	22,332

A summary of the status of our nonvested non-performance-based restricted stock grants issued under our 2004 Plan and the changes during the year ended December 31, 2014, is presented below:

	Number of Shares		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	3,761,084		$	15.98
Granted	2,001,148		16.34
Vested	(1,512,407	)	16.91
Forfeited	(510,791	)	13.27
Nonvested at December 31, 2014	3,739,034		16.17

Restricted Stock – Legacy Encore Plan

In February 2010, prior to the consummation of the merger with Encore, Encore issued a restricted stock grant to its employees under the Encore Acquisition Company 2008 Incentive Stock Plan ("Encore Plan").  At the time of the merger with Encore, the shares were converted into shares of Denbury restricted stock.  The shares vest ratably over a four-year graded vesting period; however, legacy Encore employees who terminated their employment for Good Reason, as defined by Encore's legacy Employee Severance Protection Plan, automatically vested in their awards upon termination.  The remaining nonvested restricted stock issued

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

under the Encore Plan vested during the first quarter of 2014. The following is a summary of the total vesting date fair value of restricted stock under the Encore Plan:

	Year Ended December 31,
In thousands	2014		2013		2012
Fair value of restricted stock vested	$	340	$	512	$	584

A summary of the status of the vested restricted stock grants under the Encore Plan and the changes during the year ended December 31, 2014, is presented below:

	Number of Shares		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	21,741		$	15.43
Vested	(21,078	)	15.43
Forfeited	(663	)	15.43
Nonvested at December 31, 2014	—		—

Performance-Based Equity Awards

During 2014 and 2013, we granted Performance-Based Operational Awards and Performance-Based TSR Awards to our officers. As of December 31, 2014, there was $5.3 million of unrecognized compensation expense related to nonvested performance-based equity awards.  This unrecognized compensation cost is expected to be recognized over a weighted-average period of 1.9 years.  The range of assumptions used in the Monte Carlo simulation valuation approach for Performance-Based TSR Awards (presented at the target level) are as follows:

	Year Ended December 31,
	2014			2013			2012
Weighted average fair value of Performance-Based TSR Awards granted	$	19.81		$	20.08		$	24.68
Risk-free interest rate	0.80		%	0.41		%	0.42		%
Expected life	3.0 years			3.0 years			2.8 years
Expected volatility	39.4		%	42.3		%	45.2		%
Dividend yield	2.50		%	—		%	—		%

A summary of the status of the nonvested performance-based equity awards (presented at the target level) during the year ended December 31, 2014, is as follows:

	Performance-Based Operational Awards				Performance-Based TSR Awards
	Number of Awards		Weighted Average Grant-Date Fair Value		Number of Awards		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	209,474		$	16.77	296,391		$	21.43
Granted	275,870		16.55		275,870		19.81
Forfeited	(33,946	)	16.64		(38,650	)	20.50
Nonvested at December 31, 2014	451,398		16.65		533,611		20.66

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

The following is a summary of the total vesting date fair value of performance-based equity awards:

	Year Ended December 31,
In thousands	2014		2013		2012
Vesting date fair value of Performance-Based Operational Awards	$	—	$	2,541	$	2,191

Note 9. Commodity Derivative Contracts

We do not apply hedge accounting treatment to our oil and natural gas derivative contracts; therefore, the changes in the fair values of these instruments are recognized in income in the period of change.  These fair value changes, along with the settlements of expired contracts, are shown under "Commodity derivatives expense (income)" in our Consolidated Statements of Operations.

From time to time, we enter into various oil and natural gas derivative contracts to provide an economic hedge of our exposure to commodity price risk associated with anticipated future oil and natural gas production.  We do not hold or issue derivative financial instruments for trading purposes.  These contracts have historically consisted of price floors, collars, three-way collars, fixed-price swaps, and fixed-price swaps enhanced with a sold put.  The production that we hedge has varied from year to year depending on our levels of debt and financial strength and expectation of future commodity prices.  For the past several years, we have employed a strategy to hedge a substantial portion of our forecasted production approximately 18 months to two years in the future (from the then-current quarter), as we believe it is important to protect our future cash flow to provide a level of assurance for our capital spending and dividends in those future periods. With the decline in commodity futures prices in late 2014 and early 2015, as of late February 2015, we have deferred entering into new oil derivative contracts since the third quarter of 2014. Therefore, as of February 19, 2015, the percentage of our forecasted oil production that is currently hedged for the fourth quarter of 2015 and calendar 2016 is less than the percentage hedged in recent years. During periods of lower oil prices, we may defer entering into new contracts until futures prices return to levels that we consider economically conducive to our doing so.

We manage and control market and counterparty credit risk through established internal control procedures that are reviewed on an ongoing basis. We attempt to minimize credit risk exposure to counterparties through formal credit policies, monitoring procedures, and diversification, and all of our commodity derivative contracts are with parties that are lenders under our Bank Credit Agreement (or affiliates of such lenders). As of December 31, 2014, all of our outstanding derivative contracts were subject to enforceable master netting arrangements whereby payables on those contracts can be offset against receivables from separate derivative contracts with the same counterparty. It is our policy to classify derivative assets and liabilities on a gross basis on our balance sheets, even if the contracts are subject to enforceable master netting arrangements.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

The following table summarizes our commodity derivative contracts, none of which are classified as hedging instruments in accordance with the FASC Derivatives and Hedging topic:

Months	Index Price	Volume (2)	Contract Prices (1)
			Range (3)				Weighted Average Price
							Swap		Sold Put		Floor		Ceiling
Oil Contracts:
2015 Enhanced Swaps(4)
Jan – Mar	NYMEX	14,000	$	90.00	–	90.30	$	90.06	$	65.21	$	—	$	—
Jan – Mar	LLS	16,000		93.20	–	94.00	93.63		68.00		—		—
Apr – June	NYMEX	8,000		90.00	–	90.00	90.00		65.75		—		—
Apr – June	LLS	16,000		93.20	–	94.00	93.65		68.00		—		—
July – Sept	NYMEX	10,000		90.00	–	90.10	90.02		65.30		—		—
July – Sept	LLS	16,000		93.20	–	94.00	93.65		68.00		—		—
Oct – Dec	NYMEX	12,000		91.15	–	94.00	92.42		68.00		—		—
Oct – Dec	LLS	8,000		93.80	–	96.50	94.94		68.00		—		—
2015 Collars
Jan – Mar	NYMEX	24,000	$	80.00	–	100.90	$	—	$	—	$	80.00	$	96.75
Jan – Mar	LLS	4,000		85.00	–	102.20	—		—		85.00		102.10
Apr – June	NYMEX	30,000		80.00	–	95.25	—		—		80.00		94.72
Apr – June	LLS	4,000		85.00	–	102.50	—		—		85.00		101.75
July – Sept	NYMEX	28,000		80.00	–	95.25	—		—		80.00		95.05
July – Sept	LLS	4,000		85.00	–	100.00	—		—		85.00		99.50
2015 Three-Way Collars(5)
Oct – Dec	NYMEX	10,000	$	85.00	–	102.00	$	—	$	68.00	$	85.00	$	99.00
Oct – Dec	LLS	8,000		88.00	–	104.25	—		68.00		88.00		100.99
2016 Enhanced Swaps(4)
Jan – Mar	NYMEX	12,000	$	90.65	–	93.35	$	92.43	$	68.00	$	—	$	—
Jan – Mar	LLS	8,000		93.70	–	95.45	94.81		68.50		—		—
Apr – June	NYMEX	2,000		90.35	–	90.35	90.35		68.00		—		—
Apr – June	LLS	6,000		93.30	–	93.50	93.38		70.00		—		—
2016 Three-Way Collars(5)
Jan – Mar	NYMEX	10,000	$	85.00	–	101.25	$	—	$	68.00	$	85.00	$	99.85
Jan – Mar	LLS	6,000		88.00	–	103.15	—		68.00		88.00		102.10
Apr – June	NYMEX	2,000		85.00	–	95.50	—		68.00		85.00		95.50
Apr – June	LLS	2,000		88.00	–	98.25	—		70.00		88.00		98.25
Natural Gas Contracts:
2015 Collars
Jan – Dec	NYMEX	8,000	$	4.00	–	4.53	$	—	$	—	$	4.00	$	4.51

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

(1) Contract prices are stated in $/Bbl and $/MMBtu for oil and natural gas contracts, respectively.

(2) Contract volumes are stated in Bbls/d and MMBtus/d for oil and natural gas contracts, respectively.

(3) Ranges presented for enhanced swaps represent the lowest and highest fixed prices of all open contracts for the period presented. For collars and three-way collars, ranges represent the lowest floor price and highest ceiling price for all open contracts for the period presented.

(4) An enhanced swap is a fixed-price swap contract combined with a sold put feature (at a lower price) with the same counterparty. The value associated with the sold put is used to increase or enhance the fixed price of the swap. At the contract settlement date, (1) if the index price is higher than the swap price, we pay the counterparty the difference between the index price and swap price for the contracted volumes, (2) if the index price is lower than the swap price but at or above the sold put price, the counterparty pays us the difference between the index price and the swap price for the contracted volumes, and (3) if the index price is lower than the sold put price, the counterparty pays us the difference between the swap price and the sold put price for the contracted volumes.

(5) A three-way collar is a costless collar contract combined with a sold put feature (at a lower price) with the same counterparty. The value received for the sold put is used to enhance the contracted floor and ceiling price of the related collar. At the contract settlement date, (1) if the index price is higher than the ceiling price, we pay the counterparty the difference between the index price and ceiling price for the contracted volumes, (2) if the index price is between the floor and ceiling price, no settlements occur, (3) if the index price is lower than the floor price but at or above the sold put price, the counterparty pays us the difference between the index price and the floor price for the contracted volumes, and (4) if the index price is lower than the sold put price, the counterparty pays us the difference between the floor price and the sold put price for the contracted volumes.

Note 10. Fair Value Measurements

The FASC Fair Value Measurement topic defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (often referred to as the "exit price").  We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique.  These inputs can be readily observable, market corroborated or generally unobservable.  We primarily apply the income approach for recurring fair value measurements and endeavor to utilize the best available information.  Accordingly, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs.  We are able to classify fair value balances based on the observability of those inputs.  The FASC establishes a fair value hierarchy that prioritizes the inputs used to measure fair value.  The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement).  The three levels of the fair value hierarchy are as follows:

• Level 1 — Quoted prices in active markets for identical assets or liabilities as of the reporting date.

• Level 2 — Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reported date.  Level 2 includes those financial instruments that are valued using models or other valuation methodologies.  Instruments in this category include non-exchange-traded oil and natural gas derivatives that are based on NYMEX pricing.  Our costless collars and the sold put features of our enhanced oil swaps and three-way collars are valued using the Black-Scholes model, an industry standard option valuation model that takes into account inputs such as contractual prices for the underlying instruments, including maturity, quoted forward prices for commodities, interest rates, volatility factors and credit worthiness, as well as other relevant economic measures.  Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

• Level 3 — Pricing inputs include significant inputs that are generally less observable.  These inputs may be used with internally developed methodologies that result in management's best estimate of fair value.  At December 31, 2014, instruments in this category include non-exchange-traded oil derivatives that are based on regional pricing other than NYMEX (e.g., Light Louisiana Sweet). The valuation models utilized for enhanced swaps, costless collars and three-way collars are consistent with the methodologies described above; however, since the instruments are based on regional pricing other than NYMEX, certain inputs to the valuation are less observable. Implied volatilities utilized in the valuation of Level 3 instruments are developed using a benchmark, which is considered a significant unobservable input. A one

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

percent increase or decrease in implied volatility would result in a change of approximately $1.4 million in the fair value of these instruments as of December 31, 2014.

We adjust the valuations from the valuation model for nonperformance risk, using our estimate of the counterparty's credit quality for asset positions and our credit quality for liability positions.  We use multiple sources of third-party credit data in determining counterparty nonperformance risk, including credit default swaps.

The following table sets forth by level within the fair value hierarchy our financial assets and liabilities that were accounted for at fair value on a recurring basis as of December 31, 2014 and 2013:

	Fair Value Measurements Using:
	Quoted Prices in Active Markets		Significant Other Observable Inputs			Significant Unobservable Inputs
In thousands	(Level 1)		(Level 2)			(Level 3)			Total
December 31, 2014
Assets
Oil and natural gas derivative contracts – current	$	—	$	283,238		$	157,121		$	440,359
Oil and natural gas derivative contracts – long-term	—		34,862			31,325			66,187
Total Assets	$	—	$	318,100		$	188,446		$	506,546
December 31, 2013
Assets
Oil and natural gas derivative contracts – current	$	—	$	5		$	—		$	5
Oil and natural gas derivative contracts – long-term	—		3,034			6,908			9,942
Total Assets	$	—	$	3,039		$	6,908		$	9,947
Liabilities
Oil and natural gas derivative contracts – current	$	—	$	(53,822	)	$	—		$	(53,822	)
Oil and natural gas derivative contracts – long-term	—		(3,214		)	(199		)	(3,413		)
Total Liabilities	$	—	$	(57,036	)	$	(199	)	$	(57,235	)

Since we do not apply hedge accounting for our commodity derivative contracts, any gains and losses on our assets and liabilities are included in "Commodity derivatives expense (income)" in the accompanying Consolidated Statements of Operations.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Level 3 Fair Value Measurements

The following table summarizes the changes in the fair value of our Level 3 assets and liabilities for the years ended December 31, 2014 and 2013:

	Year Ended December 31,
In thousands	2014		2013
Fair value of Level 3 instruments, beginning of year	$	6,709	$	—
Fair value adjustments on commodity derivatives	181,737		6,709
Fair value of Level 3 instruments, end of year	$	188,446	$	6,709
The amount of total gains for the period included in earnings attributable to the change in unrealized gains relating to assets still held at the reporting date	$	181,737	$	6,709

We utilize an income approach to value our Level 3 enhanced swaps, costless collars and three-way collars. We obtain and ensure the appropriateness of the significant inputs to the calculation, including contractual prices for the underlying instruments, maturity, forward prices for commodities, interest rates, volatility factors and credit worthiness, and the fair value estimate is prepared and reviewed on a quarterly basis. The following table details fair value inputs related to implied volatilities utilized in the valuation of our Level 3 oil derivative contracts:

	Fair Value at 12/31/2014 (in thousands)		Valuation Technique	Unobservable Input	Range
Oil derivative contracts	$	188,446	Discounted cash flow / Black-Scholes	Volatility of Light Louisiana Sweet for settlement periods beginning after January 1, 2015	29.3% – 44.2%

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During 2012, we recorded a $15.1 million impairment charge for an investment in the preferred stock of an entity that was created to develop a gasification plant (in which we would offtake its CO₂ to use in our tertiary oil operations) as a result of this project not moving forward. This charge is classified as "Impairment of assets" in the Consolidated Statement of Operations for the year ended December 31, 2012.

Other Fair Value Measurements

The carrying value of our loans under our Bank Credit Agreement approximate fair value as they are subject to short-term floating interest rates that approximate the rates available to us for those periods.  We use a market approach to determine fair value of our fixed-rate long-term debt using observable market data. The fair values of our senior subordinated notes are based on quoted market prices.  The estimated fair value of our debt as of December 31, 2014 and 2013, excluding pipeline financing and capital lease obligations, is $2,938.6 million and $2,957.9 million, respectively.  We have other financial instruments consisting primarily of cash, cash equivalents, short-term receivables and payables that approximate fair value due to the nature of the instrument and the relatively short maturities.

Note 11. Commitments and Contingencies

Leases

We lease office space, equipment and vehicles that have non-cancelable lease terms.  Currently, our outstanding leases have terms up to 11 years.  We have subleased part of the office space included in our operating leases for which we received rental payments. The following table summarizes operating lease payments paid and sublease rentals received during the periods indicated:

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

	Year Ended December 31,
In thousands	2014		2013		2012
Operating lease payments	$	43,333	$	37,211	$	33,606
Sublease rental receipts	2,347		2,237		2,685

The following tables summarize by year the remaining non-cancelable future payments under our leases as of December 31, 2014:

In thousands	Pipeline and Capital Leases
2015	$	61,225
2016	61,906
2017	56,072
2018	53,083
2019	44,960
Thereafter	237,473
Total minimum lease payments	514,719
Less: Amount representing interest	(191,095		)
Present value of minimum lease payments	$	323,624

In thousands	Operating Leases
2015	$	12,556
2016	12,532
2017	12,774
2018	12,730
2019	11,203
Thereafter	56,630
Total minimum lease payments	$	118,425

In addition, we expect to receive approximately $12.4 million for 2015 through 2019 under our sublease agreements.

Commitments

We have entered into long-term commitments to purchase CO₂ that are either non-cancelable or cancelable only upon the occurrence of specified future events.  The commitments continue for up to 17 years.  The price we will pay for CO₂ generally varies depending on the amount of CO₂ delivered and the price of oil.  Once all commitments have commenced (currently expected in 2016), our annual commitment under these contracts could range from $47 million to $67 million per year, assuming a $60 per Bbl NYMEX oil price.

We are party to long-term contracts that require us to deliver CO₂ to our industrial CO₂ customers at various contracted prices, plus we have a CO₂ delivery obligation to Genesis related to two CO₂ volumetric production payments ("VPPs"). Based upon the maximum amounts deliverable as stated in the industrial contracts and the VPPs, we estimate that we may be obligated to deliver up to 273 Bcf of CO₂ to these customers over the next 14 years. The maximum volume required in any given year is approximately

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

74 MMcf/d, which we judge to be minor given the size of our Jackson Dome proven CO₂ reserves at December 31, 2014, our current production capabilities and our projected levels of CO₂ usage for our own tertiary flooding program.

In conjunction with the August 2011 Riley Ridge acquisition, we assumed the 20-year helium supply contract under which the original participants in Riley Ridge agreed to supply helium to a third-party purchaser.  After the commencement date, the contract provides for the delivery of a minimum contracted quantity of helium, subject to adjustment after startup of the Riley Ridge gas processing facility, which, if not supplied in accordance with the terms of the contract, may obligate us to compensate the third-party helium purchaser for the amount of the shortfall in an amount not to exceed $8.0 million per year, or $46.0 million over the term of the contract.

Delhi Field Release

In June 2013, a release of well fluids, consisting of a mixture of carbon dioxide, saltwater, natural gas and oil, was discovered (and reported) within an area of the Denbury-operated Delhi Field located in northern Louisiana.  We completed our remediation efforts with respect to such release during the fourth quarter of 2013; however, we continue to monitor the impacted area to confirm the effectiveness of the remediation efforts. During the years ended December 31, 2014 and 2013, we recorded $16.8 million and $114.0 million, respectively, of lease operating expenses related to this release and its remediation in our Consolidated Statements of Operations, which brings our total cost estimate to date with respect to these expenses to $130.8 million, of which we have paid $112.6 million. The $16.8 million of additional charges in 2014 primarily consist of our actual or estimated expenses related to third-party property and commercial damage claims that have been settled or asserted in connection with the release, which are expected to be recoverable under our insurance policies.

We maintain insurance policies to cover certain costs, damages and claims related to releases of well fluids and remediation. We received a $25.0 million cost reimbursement ($23.9 million net to Denbury) in October 2014 related to the Delhi Field release and remediation from our insurance carrier providing the first layer of our excess insurance coverage, representing approximately 20% of our total incident costs through year-end 2014. The insurance reimbursement was recognized as a reduction to lease operating expenses in our Consolidated Statement of Operations for the year ended December 31, 2014. We have not reached any agreement with our remaining carriers as to further reimbursements, but given our belief that under our policies we are entitled to reimbursement of between approximately one-third and two-thirds of our total costs, we have filed suit to pursue further reimbursements, the ultimate outcome of which cannot be predicted.

Litigation

We are involved in various lawsuits, claims and regulatory proceedings incidental to our businesses.  While we currently believe that the ultimate outcome of these proceedings, individually and in the aggregate, will not have a material adverse effect on our financial position, results of operations or cash flows, litigation is subject to inherent uncertainties.  If an unfavorable ruling were to occur, there exists the possibility of a material adverse impact on our net income in the period in which the ruling occurs.  We provide accruals of probable losses for litigation and claims if we determine that a loss is probable and the amount can be reasonably estimated.

Other Contingencies

We are subject to audits for various taxes (income, sales and use, and severance) in the various states in which we operate, and from time to time receive assessments for potential taxes that we may owe.  In the past, settlement of these matters has not had a material adverse financial impact on us, and currently we have no material assessments for potential taxes.

We are subject to various possible contingencies that arise primarily from interpretation of federal and state laws and regulations affecting the oil and natural gas industry.  Such contingencies include differing interpretations as to the prices at which oil and natural gas sales may be made, the prices at which royalty owners may be paid for production from their leases, environmental issues and other matters.  Although we believe that we have complied with the various laws and regulations, administrative rulings and interpretations thereof, adjustments could be required as new interpretations and regulations are issued.  In addition, production rates, marketing and environmental matters are subject to regulation by various federal and state agencies.

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 12. Additional Balance Sheet Details

Trade and Other Receivables, Net

	December 31,
In thousands	2014		2013
Commodity derivatives settlement receivables	$	59,755	$	—
Trade accounts receivable, net	45,407		53,737
Federal income tax receivable, net	37,652		—
Other receivables	14,141		24,558
Total	$	156,955	$	78,295

Allowance for Doubtful Accounts

We record an allowance for doubtful accounts for receivables that we determine to be uncollectible based on the specific identification basis. The allowance for doubtful accounts, which is netted against "Trade and other receivables" on the Consolidated Balance Sheets, was $0.4 million and $0.3 million at December 31, 2014 and 2013, respectively.

Accounts Payable and Accrued Liabilities

	December 31,
In thousands	2014		2013
Accrued exploration and development costs	$	90,939	$	100,564
Accounts payable	64,604		63,263
Accrued compensation	62,513		55,043
Accrued lease operating expenses	56,798		59,762
Accrued interest	48,255		68,871
Taxes payable	39,816		28,019
Other	31,833		35,021
Total	$	394,758	$	410,543

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Denbury Resources Inc.

Notes to Consolidated Financial Statements

Note 13. Supplemental Cash Flow Information

Supplemental Cash Flow Information

	Year Ended December 31,
In thousands	2014			2013			2012
Supplemental cash flow information
Cash paid for interest, expensed	$	185,140		$	117,442		$	137,950
Cash paid for interest, capitalized	24,202			79,253			77,432
Cash paid for income taxes	5,033			28,895			99,194
Cash received from income tax refunds	(13,193		)	(17,087		)	(38,004		)
Noncash investing activities
Increase in asset retirement obligations	6,500			26,946			56,290
Increase (decrease) in liabilities for capital expenditures	215			(18,321		)	(26,882		)
Increase in restricted cash (1)	—			—			1,262,559
Decrease in restricted cash (2)	—			1,050,328			212,544

(1) During 2012, $212.5 million of proceeds from the sale of certain non-core assets in the Gulf Coast Region and $1.05 billion of the cash proceeds from the Bakken Exchange Transaction were paid by the respective purchaser directly to a qualified intermediary to facilitate a like-kind-exchange transaction for federal income tax purposes.

(2) During 2012 and 2013, proceeds from the sales of our oil and natural gas property dispositions in 2012, which were held by a qualified intermediary, were released in 2012 to fund the Thompson Field acquisition and in 2013 primarily to fund a portion of the CCA acquisition and certain post-closing costs under the Bakken Exchange Transaction.

Note 14. Subsequent Events

Equity Award Grant

The Compensation Committee of our Board of Directors granted long-term equity incentive awards to our employees under the 2004 Plan on January 9, 2015.  The grants included 3,453,425 shares of restricted stock valued at $7.31 per share (the closing price of Denbury's common stock on January 9, 2015). The awards generally vest 33% per year over a three-year period.

Dividend Declaration

On January 27, 2015, the Board of Directors declared a dividend of $0.0625 per share on our outstanding common stock, payable on March 31, 2015, to stockholders of record at the close of business on February 24, 2015.

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Denbury Resources Inc.

Unaudited Supplementary Information

SUPPLEMENTAL OIL AND NATURAL GAS DISCLOSURES (UNAUDITED)

Costs Incurred

The following table summarizes costs incurred and capitalized in oil and natural gas property acquisition, exploration and development activities.  Property acquisition costs are those costs incurred to purchase, lease or otherwise acquire property, including both undeveloped leasehold and the purchase of reserves in place.  Exploration costs include costs of identifying areas that may warrant examination and examining specific areas that are considered tohave prospects containing oil and natural gas reserves, including costs of drilling exploratory wells, geological and geophysical costs, and carrying costs on undeveloped properties.  Development costs are incurred to obtain access to proved reserves, including the cost of drilling development wells, and to provide facilities for extracting, treating, gathering and storing the oil and natural gas, and the cost of improved recovery systems.

We capitalize interest on unevaluated oil and natural gas properties that have ongoing development activities.  Included in costs incurred in the table below is capitalized interest of $21.8 million in 2014, $41.3 million in 2013 and $36.5 million in 2012.  Costs incurred also include new asset retirement obligations established, as well as changes to asset retirement obligations resulting from revisions in cost estimates or abandonment dates.  Asset retirement obligations included in the table below were $4.9 million in 2014, $17.1 million in 2013 and $38.8 million in 2012.  See Note 3, Asset Retirement Obligations, for additional information.

Costs incurred in oil and natural gas activities were as follows:

	Year Ended December 31,
In thousands	2014		2013		2012
Property acquisitions
Proved	$	3,801	$	803,837	$	491,041
Unevaluated	8,028		221,173		115,270
Exploration	5,493		2,103		12,019
Development	964,726		913,093		1,111,314
Total costs incurred (1)	$	982,048	$	1,940,206	$	1,729,644

(1) Capitalized general and administrative costs that directly relate to exploration and development activities were $62.2 million, $55.4 million and $49.2 million for the years ended December 31, 2014, 2013 and 2012, respectively.

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Denbury Resources Inc.

Unaudited Supplementary Information

Oil and Natural Gas Operating Results

Results of operations from oil and natural gas producing activities, excluding corporate overhead and interest costs, were as follows:

	Year Ended December 31,
In thousands, except per BOE data	2014			2013		2012
Oil, natural gas, and related product sales	$	2,372,473		$	2,466,234	$	2,409,867
Lease operating costs	647,559			730,574		532,359
Marketing expenses, net of third-party purchases, and plant operating expenses	47,965			37,754		41,936
Production and ad valorem taxes	155,495			162,791		149,919
Depletion, depreciation, and amortization	494,402			426,668		448,424
CO2 properties and pipelines depletion and depreciation (1)	58,759			52,932		42,064
Commodity derivatives expense (income)	(555,255		)	41,024		(4,834		)
Net operating income	1,523,548			1,014,491		1,199,999
Income tax provision	578,948			385,507		462,000
Results of operations from oil and natural gas producing activities	$	944,600		$	628,984	$	737,999
Depletion, depreciation, and amortization per BOE	$	20.36		$	18.71	$	18.69

(1) Represents an allocation of the depletion, depreciation, and amortization of our CO₂ properties and pipelines associated with our tertiary oil producing activities.

Oil and Natural Gas Reserves

Net proved oil and natural gas reserve estimates for all years presented were prepared by DeGolyer and MacNaughton, independent petroleum engineers located in Dallas, Texas.  These oil and natural gas reserve estimates do not include any value for probable or possible reserves that may exist, nor do they include any value for undeveloped acreage.  The reserve estimates represent our net revenue interest in our properties.  See Standardized Measure of Discounted Future Net Cash Flows and Changes Therein Relating to Proved Oil and Natural Gas Reserves below for a discussion of the effect of the different prices on reserve quantities and values.  Operating costs, production and ad valorem taxes, and future development costs were based on current costs as of December 31, 2014.

There are numerous uncertainties inherent in estimating quantities of proved reserves and in projecting the future rates of production and timing of development expenditures.  The following reserve data represents estimates only and should not be construed as being exact.  Moreover, the present values should not be construed as the current market value of our oil and natural gas reserves or the costs that would be incurred to obtain equivalent reserves.  Estimates of reserves as of year-end 2014, 2013 and 2012 were prepared using an average price equal to the unweighted arithmetic average of hydrocarbon prices received on a field-by-field basis on the first day of each month within the applicable fiscal 12-month period.  All of our reserves are located in the United States.

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Denbury Resources Inc.

Unaudited Supplementary Information

Estimated Quantities of Proved Reserves

	Year Ended December 31,
	2014						2013						2012
	Oil (MBbl)		Gas (MMcf)		Total (MBOE)		Oil (MBbl)		Gas (MMcf)		Total (MBOE)		Oil (MBbl)		Gas (MMcf)		Total (MBOE)
Balance at beginning of year	386,659		489,954		468,318		329,124		481,641		409,398		357,733		625,208		461,934
Revisions of previous estimates	2,132		(36,796	)	(4,000	)	4,704		60		4,714		(7,099	)	(16,720	)	(9,886	)
Revisions due to change in sales prices	(1,971	)	7,789		(673	)	665		14,100		3,015		(401	)	(37,969	)	(6,729	)
Extensions and discoveries	—		—		—		118		—		118		14,910		10,005		16,579
Improved recovery (1)	1,468		—		1,468		34,015		—		34,015		69,543		—		69,543
Production	(25,771	)	(8,379	)	(27,168	)	(24,194	)	(8,666	)	(25,639	)	(24,462	)	(10,654	)	(26,238	)
Acquisition of minerals in place	—		—		—		42,227		2,819		42,697		24,677		20,598		28,110
Sales of minerals in place	(182	)	(166	)	(210	)	—		—		—		(105,777	)	(108,827	)	(123,915	)
Balance at end of year	362,335		452,402		437,735		386,659		489,954		468,318		329,124		481,641		409,398
Proved Developed Reserves
Balance at beginning of year	276,392		72,095		288,408		236,009		64,191		246,708		239,741		125,970		260,736
Balance at end of year	269,377		416,421		338,780		276,392		72,095		288,408		236,009		64,191		246,708

(1) Improved recovery reflects reserve additions that result from the application of secondary recovery methods such as water flooding, or tertiary recovery methods such as CO₂ flooding.  In order to recognize proved tertiary oil reserves, we must either have an oil production response to CO₂ injections or the field must be analogous to an existing tertiary flood. The magnitude of proved reserves that we can book in any given year will depend on our progress with new floods and the timing of the production response.

There were no significant additions to our oil and natural gas reserves in 2014, as the magnitude of proved reserves that we can book in any given year depends on our progress with new floods and the timing of the production response, and we initiated no new floods in 2014. Revisions of previous estimates in 2014 primarily relate to natural gas reserves at Riley Ridge and Delhi fields previously classified as proved, which are now planned to be consumed as fuel.

Acquisitions of minerals in place during 2013 were primarily related to the acquisition of additional interests in certain of our existing operated fields in CCA, as well as operating interests in other CCA fields. Reserves added as a result of improved recovery represent initial proved tertiary oil reserves at Bell Creek Field.

We added 114.2 MMBOE of estimated proved reserves during 2012, including tertiary reserves of 69.5 MMBbls, primarily at Hastings and Oyster Bayou fields; 25.9 MMBOE from the acquisition of interests in the Thompson, Webster and Hartzog Draw fields; and 11.5 MMBOE from our Bakken area assets prior to their sale in the fourth quarter of 2012. These increases were offset by the disposition of 123.9 MMBOE of reserves associated with disposed properties, including our Bakken area assets, and non-core assets in the Gulf Coast region and Paradox Basin in Utah.

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Denbury Resources Inc.

Unaudited Supplementary Information

Standardized Measure of Discounted Future Net Cash Flows and Changes Therein Relating to Proved Oil and Natural Gas Reserves

The Standardized Measure of Discounted Future Net Cash Flows and Changes Therein Relating to Proved Oil and Natural Gas Reserves ("Standardized Measure") does not purport to present the fair market value of our oil and natural gas properties.  An estimate of such value should consider, among other factors, anticipated future prices of oil and natural gas, the probability of recoveries in excess of existing proved reserves, the value of probable reserves and acreage prospects, and perhaps different discount rates.  It should be noted that estimates of reserve quantities, especially from new discoveries, are inherently imprecise and subject to substantial revision.

Under the Standardized Measure, future cash inflows were estimated by applying a first-day-of-the-month 12-month average price to the estimated future production of year-end proved reserves.  The product prices used to calculate these reserves have varied widely during the three-year period.  These prices have a significant impact on both the quantities and value of the proved reserves, as reductions in oil and natural gas prices can cause wells to reach the end of their economic life much sooner and can make certain proved undeveloped locations uneconomical, both of which reduce the reserves.  The following representative oil and natural gas prices were used in the Standardized Measure.  These prices were adjusted by field to arrive at the appropriate corporate net price.

	December 31,
	2014		2013		2012
Oil (NYMEX price per Bbl)	$	94.99	$	96.94	$	94.71
Natural Gas (Henry Hub price per MMBtu)	4.30		3.67		2.85

The representative oil prices in the table above are not reflective of late 2014 and early 2015 significant crude oil price declines. In late 2014 and early 2015, oil prices dropped rapidly, declining to below $45 per Bbl in January 2015. In response to these price decreases, we have deferred our development spending for certain projects in 2015, which has been reflected in our December 31, 2014 reserve report. Sustained prices at these recent levels would result in a significant decrease in the future cash inflows associated with our proved reserve value, and to a lesser degree, a reduction in proved reserve volumes. The decrease in the Standardized Measure of discounted future net cash flows during 2014 in the tables that follow was significantly impacted by the decline in oil prices we received relative to NYMEX oil prices (our NYMEX oil price differential) between 2013 and 2014. The weighted-average oil price differentials utilized were $3.10 per Bbl below representative NYMEX oil prices as of December 31, 2014, compared to $3.41 per Bbl and $7.57 per Bbl above representative NYMEX oil prices as of December 31, 2013 and 2012, respectively.

Future cash inflows were reduced by estimated future production, development and abandonment costs based on current cost, with no escalation to determine pre-tax cash inflows.  Our future net inflows do not include a reduction for cash previously expended on our capitalized CO₂ assets that will be consumed in the production of proved tertiary reserves.  Future income taxes were computed by applying the statutory tax rate to the excess of net cash inflows over our tax basis in the associated proved oil and natural gas properties.  Tax credits and net operating loss carryforwards were also considered in the future income tax calculation.  Future net cash inflows after income taxes were discounted using a 10% annual discount rate to arrive at the Standardized Measure.

	December 31,
In thousands	2014			2013			2012
Future cash inflows	$	34,761,067		$	40,065,019		$	34,779,549
Future production costs	(14,563,782		)	(16,053,734		)	(13,114,740		)
Future development costs	(2,319,727		)	(2,552,194		)	(2,034,174		)
Future income taxes	(5,711,897		)	(6,937,773		)	(6,672,857		)
Future net cash flows	12,165,661			14,521,318			12,957,778
10% annual discount for estimated timing of cash flows	(6,257,533		)	(7,392,574		)	(6,543,398		)
Standardized measure of discounted future net cash flows	$	5,908,128		$	7,128,744		$	6,414,380

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Unaudited Supplementary Information

The following table sets forth an analysis of changes in the Standardized Measure of Discounted Future Net Cash Flows from proved oil and natural gas reserves:

	Year Ended December 31,
In thousands	2014			2013			2012
Beginning of year	$	7,128,744		$	6,414,380		$	7,007,605
Sales of oil and natural gas produced, net of production costs (1)	(1,521,529		)	(1,649,113		)	(1,673,253		)
Net changes in prices and production costs	(1,415,154		)	(170,571		)	(597,512		)
Extensions and discoveries, less applicable future development and production costs	—			4,902			291,558
Improved recovery (2)	51,793			739,019			1,901,109
Previously estimated development costs incurred	472,154			393,537			376,199
Change in future development costs	(289,622		)	(301,162		)	(454,140		)
Revisions due to timing and other	(205,912		)	(446,586		)	(330,849		)
Accretion of discount	1,020,008			1,072,113			875,383
Acquisition of minerals in place	—			1,082,050			767,267
Sales of minerals in place	2,549			—			(1,805,309		)
Net change in income taxes	665,097			(9,825		)	56,322
End of year	$	5,908,128		$	7,128,744		$	6,414,380

(1) Production costs exclude a net reduction of $7.1 million in lease operating expenses recorded during the year ended December 31, 2014, related to the Delhi Field release, and a charge of $114.0 million of lease operating expenses recorded during the year ended December 31, 2013, related to that release.

(2) Improved recovery additions result from the application of secondary recovery methods such as water flooding or tertiary recovery methods such as CO₂ flooding.

SUPPLEMENTAL CO₂ AND HELIUM DISCLOSURES (UNAUDITED)

Based on engineering reports prepared by DeGolyer and MacNaughton, proved CO₂ reserves, and helium reserves associated with our helium production rights, were estimated as follows (in MMcf):

	Year Ended December 31,
	2014	2013	2012
CO2 reserves
Gulf Coast region (1)	5,697,642	6,070,619	6,073,175
Rocky Mountain region (2)	3,035,286	3,272,428	3,495,534
Helium reserves associated with Denbury's production rights
Rocky Mountain region (3)	13,231	13,251	12,712

(1) Proved CO₂ reserves in the Gulf Coast region consist of reserves from our reservoirs at Jackson Dome and are presented on a gross working interest (8/8ths) basis, of which our net revenue interest was approximately 4.5 Tcf, 4.8 Tcf and 4.8 Tcf at December 31, 2014, 2013 and 2012, respectively, and include reserves dedicated to volumetric production payments of 9.3 Bcf, 28.9 Bcf and 57.1 Bcf at December 31, 2014, 2013 and 2012, respectively.

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Denbury Resources Inc.

Unaudited Supplementary Information

(2) Proved CO₂ reserves in the Rocky Mountain region consist of our reserves at Riley Ridge (presented on a gross working interest (8/8ths) basis) and our overriding royalty interest in LaBarge Field, of which our net revenue interest was approximately 2.6 Tcf, 2.9 Tcf and 2.9 Tcf at December 31, 2014, 2013 and 2012, respectively.

(3) Reserves associated with helium production rights include helium reserves located in acreage in the Rocky Mountain region for which we have the contractual right to extract the helium on behalf of the U.S. government, which owns the helium. Our extraction agreement with the U.S. government gives us the ability to produce the helium on behalf of the U.S. government in exchange for a fee, which amount fluctuates based upon the realized sales proceeds we receive for the helium. The estimate of helium reserves is reduced to reflect the estimated fee we will remit to the U.S. government. Our extraction agreement with the U.S. government has a minimum term extending 20 years from first production and continuing thereafter until either party terminates the contract. Reserve volumes presented herein assume that the term of this helium extraction agreement continues beyond 20 years, given the benefit to both parties to the agreement.

UNAUDITED QUARTERLY INFORMATION

In thousands, except per-share data	March 31			June 30			September 30			December 31
2014
Revenues and other income	$	641,744		$	672,120		$	637,657		$	483,684
Commodity derivatives expense (income)	76,669			174,771			(252,265		)	(554,430		)
Loss on early extinguishment of debt	—			113,908			—			—
Other expenses (1)	471,972			471,505			453,604			456,914
Net income (loss)	58,310			(55,200		)	268,748			363,633
Net income (loss) per common share:
Basic	0.17			(0.16		)	0.77			1.04
Diluted	0.17			(0.16		)	0.77			1.04
Dividends declared per common share	0.0625			0.0625			0.0625			0.0625
Cash flow provided by operating activities	214,858			329,847			340,392			337,728
Cash flow used in investing activities	(236,754		)	(280,148		)	(272,021		)	(287,832		)
Cash flow provided by (used in) financing activities	17,601			(45,545		)	(60,981		)	(46,179		)
2013
Revenues and other income	$	583,086		$	650,084		$	684,835		$	599,122
Commodity derivatives expense (income)	11,929			(45,501		)	80,446			(5,850		)
Loss on early extinguishment of debt	44,223			428			—			—
Other expenses (1)	384,999			483,851			445,024			475,198
Net income	87,571			129,980			102,054			89,992
Net income per common share:
Basic	0.24			0.35			0.28			0.25
Diluted	0.23			0.35			0.28			0.25
Cash flow provided by operating activities	269,176			437,568			305,465			348,986
Cash flow used in investing activities	(320,646		)	(344,927		)	(286,130		)	(323,606		)
Cash flow provided by (used in) financing activities	15,228			(79,045		)	(68,652		)	(39,741		)

(1) Includes $2.8 million, ($9.9 million), $16.0 million, $28.0 million, and $70.0 million related to Delhi remediation charges, net of insurance reimbursements during the three months ended in December 31, 2014, September 30, 2014, December 31, 2013, September 30, 2013, and June 30, 2013, respectively.

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Denbury Resources Inc.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) was performed under the supervision and with the participation of management, including our Chief Executive Officer and our Chief Financial Officer.  Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of December 31, 2014, to ensure that information that is required to be disclosed in the reports the Company files and submits under the Securities Exchange Act of 1934 is recorded; that it is processed, summarized and reported within the time periods specified in the SEC's rules and forms; and that information that is required to be disclosed under the Exchange Act is accumulated and communicated to management, including our Chief Executive Officer and our Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Evaluation of Changes in Internal Control over Financial Reporting

Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, we have determined that, during the fourth quarter of fiscal 2014, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management's Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) of the Securities Exchange Act of 1934, as amended.  Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, we assessed the effectiveness of our internal control over financial reporting as of the end of the period covered by this report based on the framework in "Internal Control – Integrated Framework" (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.  Based on that assessment, our Chief Executive Officer and our Chief Financial Officer concluded that our internal control over financial reporting was effective to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of our financial statements for external purposes in accordance with U.S. generally accepted accounting principles.

The effectiveness of our internal control over financial reporting as of December 31, 2014, has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in the report that appears herein.

Important Considerations

The effectiveness of our disclosure controls and procedures and our internal control over financial reporting is subject to various inherent limitations, including cost limitations, judgments used in decision making, assumptions about the likelihood of future events, the soundness of our systems, the possibility of human error, and the risk of fraud.  Moreover, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions and the risk that the degree of compliance with policies or procedures may deteriorate over time.  Because of these limitations, there can be no assurance that any system of disclosure controls and procedures or internal control over financial reporting will be successful in preventing all errors or fraud or in making all material information known in a timely manner to the appropriate levels of management.

Item 9B. Other Information

None.

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Denbury Resources Inc.

PART III

Item 10. Directors, Executive Officers and Corporate Governance

Except as disclosed below, information as to Item 10 will be set forth in the Proxy Statement ("Proxy Statement") for the Annual Meeting of Shareholders to be held May 19, 2015 ("Annual Meeting") and is incorporated herein by reference.

Code of Ethics

We have adopted a Code of Ethics for Senior Financial Officers and the Principal Executive Officer.  This Code of Ethics, including any amendments or waivers, is posted on our website at www.denbury.com.

Item 11. Executive Compensation

Information as to Item 11 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Information as to Item 12 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence

Information as to Item 13 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.

Item 14. Principal Accountant Fees and Services

Information as to Item 14 will be set forth in the Proxy Statement for the Annual Meeting and is incorporated herein by reference.

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Denbury Resources Inc.

PART IV

Item 15. Exhibits and Financial Statement Schedules

Financial Statements and Schedules.  Financial statements and schedules filed as a part of this report are presented on page 71.  All financial statement schedules have been omitted because they are not applicable, or the required information is presented in the financial statements or the notes to consolidated financial statements.

Exhibits.  The following exhibits are included as part of this report.

Exhibit No.	Exhibit
2(a)	Exchange Agreement, dated as of September 19, 2012, by and among Denbury Onshore, LLC, XTO Energy Inc., and Exxon Mobil Corporation (incorporated by reference to Exhibit 2.1 of Form 8-K filed by the Company on September 25, 2012, File No. 001-12935).
2(b)	Closing Agreement and Amendment, dated as of November 30, 2012, by and among Denbury Onshore, LLC, XTO Energy Inc., and Exxon Mobil Corporation (incorporated by reference to Exhibit 2.2 of Form 8-K filed by the Company on December 6, 2012, File No. 001-12935).
2(c)	Second Closing Agreement and Amendment, dated as of December 21, 2012, by and among Denbury Onshore, LLC, XTO Energy Inc., and Exxon Mobil Corporation (incorporated by reference to Exhibit 2.1 of Form 8-K filed by the Company on December 26, 2012, File No. 001-12935).
2(d)	Purchase and Sale Agreement, dated as of January 14, 2013, by and between Burlington Resources Oil & Gas Company LP and Denbury Onshore, LLC (incorporated by reference to Exhibit 2.1 of Form 8-K filed by the Company on January 15, 2013, File No. 001-12935).
3(a)	Second Restated Certificate of Incorporation of Denbury Resources Inc. filed with the Delaware Secretary of State on October 30, 2014 (incorporated by reference to Exhibit 3(a) of Form 10-Q filed by the Company on November 7, 2014, File No. 001-12935).
3(b)	Second Amended and Restated Bylaws of Denbury Resources Inc. as of November 4, 2014 (incorporated by reference to Exhibit 3(b) of Form 10-Q filed by the Company on November 7, 2014, File No. 001-12935).
4(a)	Indenture for 8¼% Senior Subordinated Notes due 2020, dated as of February 10, 2010, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1 of Form 8-K filed by the Company on February 12, 2010, File No. 001-12935).
4(b)	First Supplemental Indenture for 8¼% Senior Subordinated Notes due 2020, dated as of March 9, 2010, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.7 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(c)	Second Supplemental Indenture for 8¼% Senior Subordinated Notes due 2020, dated as of February 3, 2011, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4(s) of Form 10-K filed by the Company on March 1, 2011, File No. 001-12935).
4(d)	Third Supplemental Indenture for 8¼% Senior Subordinated Notes due 2020, dated as of April 30, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3 of Form 8-K filed by the Company on May 1, 2014, File No. 001-12935).

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Denbury Resources Inc.

Exhibit No.	Exhibit
4(e)	Indenture for 6.25% Senior Subordinated Notes Due 2014, dated as of April 2, 2004, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1.1 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(f)	First Supplemental Indenture for 6.25% Senior Subordinated Notes Due 2014, dated as of January 2, 2008, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1.2  of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(g)	Second Supplemental Indenture for 6.25% Senior Subordinated Notes Due 2014, dated as of January 27, 2010, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1.3 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(h)	Third Supplemental Indenture for 6.25% Senior Subordinated Notes Due 2014, dated as of March 10, 2010, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1.4 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(i)	Fourth Supplemental Indenture for 6.25% Senior Subordinated Notes Due 2014, dated as of February 3, 2011, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4(x) of Form 10-K filed by the Company on March 1, 2011, File No. 001-12935).
4(j)	Indenture for 6.0% Senior Subordinated Notes due 2015, dated as of July 13, 2005, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.2.1 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(k)	First Supplemental Indenture for 6.0% Senior Subordinated Notes due 2015, dated as of January 2, 2008, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.2.2 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(l)	Second Supplemental Indenture for 6.0% Senior Subordinated Notes due 2015, dated as of January 27, 2010, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.2.3 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(m)	Third Supplemental Indenture for 6.0% Senior Subordinated Notes due 2015, dated as of March 10, 2010, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.2.4 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(n)	Fourth Supplemental Indenture for 6.0% Senior Subordinated Notes due 2015, dated as of February 3, 2011, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4(cc) of Form 10-K filed by the Company on March 1, 2011, File No. 001-12935).
4(o)	Indenture for Subordinated Debt Securities, dated as of November 16, 2005, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3.1 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).

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Denbury Resources Inc.

Exhibit No.	Exhibit
4(p)	First Supplemental Indenture for 7.25% Senior Subordinated Notes due 2017, dated as of November 23, 2005, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3.2 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(q)	Second Supplemental Indenture for 7.25% Senior Subordinated Notes due 2017, dated as of January 2, 2008, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3.3 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(r)	Third Supplemental Indenture for 9.5% Senior Subordinated Notes due 2016, dated as of April 27, 2009, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3.4 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(s)	Fourth Supplemental Indenture for Senior Subordinated Notes, dated as of January 27, 2010, by and among Encore Acquisition Company, certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3.5 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(t)	Fifth Supplemental Indenture for Senior Subordinated Notes, dated as of March 10, 2010, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3.6 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
4(u)	Sixth Supplemental Indenture for Senior Subordinated Notes, dated as of February 3, 2011, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4(jj) of Form 10-K filed by the Company on March 1, 2011, File No. 001-12935).
4(v)	Seventh Supplemental Indenture for Senior Subordinated Notes, dated as of February 5, 2013, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.2 of Form 8-K filed by the Company on February 5, 2013, File No. 001-12935).
4(w)	Indenture for 6⅜% Senior Subordinated Notes due 2021, dated as of February 17, 2011, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1 of Form 8-K filed by the Company on February 22, 2011, File No. 001-12935).
4(x)*	First Supplemental Indenture for 6⅜% Senior Subordinated Notes due 2021, dated as of December 31, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee.
4(y)	Indenture for 4⅝% Senior Subordinated Notes due 2023, dated as of February 5, 2013, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1 of Form 8-K filed by the Company on February 5, 2013, File No. 001-12935).
4(z)*	First Supplemental Indenture for 4⅝% Senior Subordinated Notes due 2023, dated as of December 31, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee.
4(aa)	Indenture for 5½% Senior Subordinated Notes due 2022, dated as of April 30, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1 of Form 8-K filed by the Company on May 1, 2014, File No. 001-12935).

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Denbury Resources Inc.

Exhibit No.	Exhibit
4(bb)*	First Supplemental Indenture for 5½% Senior Subordinated Notes due 2022, dated as of December 31, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee.
10(a)	Credit Agreement, dated as of March 9, 2010, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10.1 of Form 8-K filed by the Company on March 12, 2010, File No. 001-12935).
10(b)	First Amendment to Credit Agreement, dated as of May 13, 2010, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10.1 of Form 8-K filed by the Company on May 19, 2010, File No. 001-12935).
10(c)	Second Amendment to Credit Agreement, dated as of September 30, 2010, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10.1 of Form 10-Q filed by the Company on November 9, 2010, File No. 001-12935).
10(d)	Third Amendment to Credit Agreement, dated as of December 17, 2010, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10(d) of Form 10-K filed by the Company on March 1, 2011, File No. 001-12935).
10(e)	Fourth Amendment to Credit Agreement, dated as of February 1, 2011, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10(e) of Form 10-K filed by the Company on March 1, 2011, File No. 001-12935).
10(f)	Fifth Amendment to Credit Agreement, dated as of May 19, 2011, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 99.1 of Form 8-K filed by the Company on May 20, 2011, File No. 001-12935).
10(g)	Sixth Amendment to Credit Agreement, dated as of September 1, 2011, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10.1 of Form 8-K filed by the Company on September 8, 2011, File No. 001-12935).
10(h)	Seventh Amendment to Credit Agreement, dated as of April 11, 2012, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 4(a) of Form 10-Q filed by the Company on May 10, 2012, File No. 001-12935).
10(i)	Eighth Amendment to Credit Agreement, dated as of July 26, 2012, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 4(a) of Form 10-Q filed by the Company on August 8, 2012, File No. 001-12935).
10(j)	Ninth Amendment to Credit Agreement, dated as of November 2, 2012, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10(a) of Form 10-Q filed by the Company on November 8, 2012, File No. 001-12935).

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Denbury Resources Inc.

Exhibit No.	Exhibit
10(k)	Tenth Amendment to Credit Agreement, dated as of January 18, 2013, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10(k) of Form 10-K filed by the Company on February 28, 2013, File No. 001-12935).
10(l)	Eleventh Amendment to Credit Agreement and First Amendment to Facility Guarantees, dated as of November 8, 2013, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10(l) of Form 10-K filed by the Company on February 28, 2014, File No. 001-12935).
10(m)	Twelfth Amendment to Credit Agreement, dated as of April 15, 2014, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the financial institutions party thereto (incorporated by reference to Exhibit 10.1 of Form 8-K filed by the Company on April 17, 2014, File No. 001-12935).
10(n)	Amended and Restated Credit Agreement, dated as of December 9, 2014, by and among Denbury Resources Inc., as Borrower, JPMorgan Chase Bank, N.A., as Administrative Agent, and the lending institutions party thereto (incorporated by reference to Exhibit 10.1 of Form 8-K filed by the Company on December 15, 2014, File No. 001-12935).
10(o)	Pipeline Financing Lease Agreement, dated as of May 30, 2008, by and between Genesis NEJD Pipeline, LLC, as Lessor, and Denbury Onshore, LLC, as Lessee (incorporated by reference to Exhibit 99.1 of Form 8-K filed by the Company on June 5, 2008, File No. 001-12935).
10(p)	Transportation Services Agreement, dated as of May 30, 2008, by and between Genesis Free State Pipeline, LLC and Denbury Onshore, LLC (incorporated by reference to Exhibit 99.2 of Form 8-K filed by the Company on June 5, 2008, File No. 001-12935).
10(q)**	Denbury Resources Inc. Amended and Restated Stock Option Plan, effective as of December 5, 2007 (incorporated by reference to Exhibit 99.2 of Form 8-K filed by the Company on December 11, 2007, File No. 001-12935).
10(r)**	Denbury Resources Inc. Amended and Restated Employee Stock Purchase Plan, effective as of May 22, 2013 (incorporated by reference to Exhibit 10.1 of Form 8-K filed by the Company on May 28, 2013, File No. 001-12935).
10(s)**	Form of Indemnification Agreement, dated as of July 28, 1999, by and between Denbury Resources Inc. and its officers and directors (incorporated by reference to Exhibit 10 of Form 10-Q filed by the Company on August 11, 1999, File No. 001-12935).
10(t)**	Denbury Resources Inc. Director Deferred Compensation Plan, as amended and restated effective as of December 12, 2013 (incorporated by reference to Exhibit 10(r) of Form 10-K filed by the Company on February 28, 2014, File No. 001-12935).
10(u)**	Denbury Resources Inc. Severance Protection Plan, as amended and restated effective as of December 13, 2012 (incorporated by reference to Exhibit 10(v) of Form 10-K filed by the Company on February 28, 2013, File No. 001-12935).
10(v)**	Denbury Resources Inc. 2004 Omnibus Stock and Incentive Plan, as amended and restated as of December 12, 2013 (incorporated by reference to Exhibit 10(t) of Form 10-K filed by the Company on February 28, 2014, File No. 001-12935).
10(w)**	2004 Form of Restricted Stock Award that vests on retirement for grants to officers pursuant to the 2004 Omnibus Stock and Incentive Plan for Denbury Resources Inc. (incorporated by reference to Exhibit 10(l) of Form 10-K filed by the Company on March 15, 2005, File No. 001-12935).

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Denbury Resources Inc.

Exhibit No.	Exhibit
10(x)**	2012 Form of Performance Stock Award pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(a) of Form 10-Q filed by the Company on May 10, 2012, File No. 001-12935).
10(y)**	2012 Form of Performance Cash Award pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(b) of Form 10-Q filed by the Company on May 10, 2012, File No. 001-12935).
10(z)**	2012 Form of TSR Performance Award pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(c) of Form 10-Q filed by the Company on May 10, 2012, File No. 001-12935).
10(aa)**	2013 Form of Performance Share Award pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(a) of Form 10-Q filed by the Company on May 10, 2013, File No. 001-12935).
10(bb)**	2013 Form of Performance Cash Award pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(b) of Form 10-Q filed by the Company on May 10, 2013, File No. 001-12935).
10(cc)**	2013 Form of TSR Performance Award pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(c) of Form 10-Q filed by the Company on May 10, 2013, File No. 001-12935).
10(dd)**	2013 Form of Stock Appreciation Rights Agreement pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(e) of Form 10-Q filed by the Company on May 10, 2013, File No. 001-12935).
10(ee)**	2013 Form of Restricted Share Award to officers pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(d) of Form 10-Q filed by the Company on May 10, 2013, File No. 001-12935).
10(ff)**	2013 Form of Restricted Share Award to non-employee directors pursuant to the 2004 Omnibus Stock and Incentive Plan (incorporated by reference to Exhibit 10(c) of Form 10-Q filed by the Company on August 6, 2013, File No. 001-12935).
10(gg)**	2013 Form of Deferred Stock Unit Award pursuant to the Director Deferred Compensation Plan (with respect to deferred long-term incentive awards) (incorporated by reference to Exhibit 10(d) of Form 10-Q filed by the Company on August 6, 2013, File No. 001-12935).
10(hh)**	2013 Form of Deferred Stock Unit Agreement pursuant to the Director Deferred Compensation Plan (with respect to deferred director fees) (incorporated by reference to Exhibit 10(e) of Form 10-Q filed by the Company on August 6, 2013, File No. 001-12935).
10(ii)**	Officer Resignation Agreement, effective as of December 31, 2013, by and between Denbury Resources Inc. and Robert L. Cornelius (incorporated by reference to Exhibit 10(z) of Form 10-K filed by the Company on February 28, 2014, File No. 001-12935).
10(jj)**	2014 Form of Performance Cash Award under the 2004 Omnibus Stock and Incentive Plan for Denbury Resources Inc. (incorporated by reference to Exhibit 10(a) of Form 10-Q filed by the Company on May 12, 2014, File No. 001-12935).
10(kk)**	2014 Form of TSR Performance Award under the 2004 Omnibus Stock and Incentive Plan for Denbury Resources Inc. (incorporated by reference to Exhibit 10(b) of Form 10-Q filed by the Company on May 12, 2014, File No. 001-12935).
10(ll)**	2014 Form of Performance Capital Efficiency Share Award under the 2004 Omnibus Stock and Incentive Plan for Denbury Resources Inc. (incorporated by reference to Exhibit 10(c) of Form 10-Q filed by the Company on May 12, 2014, File No. 001-12935).

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Denbury Resources Inc.

Exhibit No.	Exhibit
10(mm)**	2014 Form of Growth and Income Performance Share Award under the 2004 Omnibus Stock and Incentive Plan for Denbury Resources Inc. (incorporated by reference to Exhibit 10(d) of Form 10-Q filed by the Company on May 12, 2014, File No. 001-12935).
10(nn)**	2014 Form of Restricted Share Award Cliff Vesting Awards under the 2004 Omnibus Stock and Incentive Plan for Denbury Resources Inc. (incorporated by reference to Exhibit 10(e) of Form 10-Q filed by the Company on May 12, 2014, File No. 001-12935).
10(oo)* **	Officer Resignation Agreement, effective as of November 14, 2014, by and between Denbury Resources Inc. and K. Craig McPherson.
10(pp)* **	Officer Resignation Agreement, effective as of November 14, 2014, by and between Denbury Resources Inc. and Charles E. Gibson.
21*	List of subsidiaries of Denbury Resources Inc.
23(a)*	Consent of PricewaterhouseCoopers LLP.
23(b)*	Consent of DeGolyer and MacNaughton.
31(a)*	Certification of Chief Executive Officer Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
31(b)*	Certification of Chief Financial Officer Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
32*	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
99*	The summary of DeGolyer and MacNaughton's Report as of December 31, 2014, on oil and gas reserves (SEC Case) dated January 27, 2015.

*   Included herewith.

** Compensation arrangements.

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Denbury Resources Inc.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, Denbury Resources Inc. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	DENBURY RESOURCES INC.
February 27, 2015	/s/ Mark C. Allen
	Mark C. Allen Sr. Vice President and Chief Financial Officer
February 27, 2015	/s/ Alan Rhoades
	Alan Rhoades Vice President and Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of Denbury Resources Inc. and in the capacities and on the dates indicated.

February 27, 2015	/s/ Phil Rykhoek
	Phil Rykhoek Director, President and Chief Executive Officer (Principal Executive Officer)
February 27, 2015	/s/ Mark C. Allen
	Mark C. Allen Sr. Vice President and Chief Financial Officer (Principal Financial Officer)
February 27, 2015	/s/ Alan Rhoades
	Alan Rhoades Vice President and Chief Accounting Officer (Principal Accounting Officer)
February 27, 2015	/s/ Wieland F. Wettstein
	Wieland F. Wettstein Director
February 27, 2015	/s/ Michael L. Beatty
	Michael L. Beatty Director
February 27, 2015	/s/ Michael B. Decker
	Michael B. Decker Director
February 27, 2015	/s/ John P. Dielwart
	John P. Dielwart Director

February 27, 2015	/s/ Ronald G. Greene
	Ronald G. Greene Director
February 27, 2015	/s/ Gregory L. McMichael
	Gregory L. McMichael Director
February 27, 2015	/s/ Kevin O. Meyers
	Kevin O. Meyers Director
February 27, 2015	/s/ Randy Stein
	Randy Stein Director
February 27, 2015	/s/ Laura A. Sugg
	Laura A. Sugg Director

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Denbury Resources Inc.

INDEX TO EXHIBITS

Exhibit No.	Exhibit
4(x)	First Supplemental Indenture for 6⅜% Senior Subordinated Notes due 2021, dated as of December 31, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee.
4(z)	First Supplemental Indenture for 4⅝% Senior Subordinated Notes due 2023, dated as of December 31, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee.
4(bb)	First Supplemental Indenture for 5½% Senior Subordinated Notes due 2022, dated as of December 31, 2014, by and among Denbury Resources Inc., certain of its subsidiaries, and Wells Fargo Bank, National Association, as Trustee.
10(oo)	Officer Resignation Agreement, effective as of November 14, 2014, by and between Denbury Resources Inc. and K. Craig McPherson.
10(pp)	Officer Resignation Agreement, effective as of November 14, 2014, by and between Denbury Resources Inc. and Charles E. Gibson.
21	List of subsidiaries of Denbury Resources Inc.
23(a)	Consent of PricewaterhouseCoopers LLP.
23(b)	Consent of DeGolyer and MacNaughton.
31(a)	Certification of Chief Executive Officer Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
31(b)	Certification of Chief Financial Officer Pursuant to Section 302 of Sarbanes-Oxley Act of 2002.
32	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
99	The summary of DeGolyer and MacNaughton's Report as of December 31, 2014, on oil and gas reserves (SEC Case) dated January 27, 2015.

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EX-4.X

	
		
		
		DNR - 2014.12.31 - EX 4x
	
	

EX-4.Z

Exhibit 4(z)

FIRST SUPPLEMENTAL INDENTURE

FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of December 31, 2014 among DENBURY RESOURCES INC., a Delaware corporation (the “Company”), on behalf of itself and the Subsidiary Guarantors under the Indenture referred to below (the “Existing Subsidiary Guarantors”), WELLS FARGO BANK, NATIONAL ASSOCIATION, as trustee under the Indenture referred to below (the “Trustee”), and the following indirect, wholly-owned subsidiaries of the Company (referred to herein collectively as the “New Subsidiary Guarantors”): (1) Denbury Green Pipeline - Montana, LLC, a Delaware limited liability company, (2) Denbury Green Pipeline - Riley Ridge, LLC, a Delaware limited liability company, (3) Denbury Thompson Pipeline, LLC, a Delaware limited liability company, (4) Encore Partners GP Holdings LLC, a Delaware limited liability company, and (5) Plain Energy Holdings, LLC, a Delaware limited liability company.

W I T N E S S E T H:

WHEREAS the Company has heretofore executed and delivered to the Trustee an Indenture dated as of February 5, 2013 (the “Indenture”), providing for the issuance of 4 5/8% Senior Subordinated Notes due 2023 (the “Securities”);

WHEREAS the Company desires to cause the New Subsidiary Guarantors to execute and deliver to the Trustee a supplemental indenture pursuant to which the New Subsidiary Guarantors shall fully and unconditionally guarantee all of the obligations of the Company under the Securities pursuant to a Subsidiary Guarantee on the terms and conditions set forth herein; and

WHEREAS pursuant to Section 9.01 of the Indenture, the Trustee, the Company and Existing Subsidiary Guarantors are authorized to execute and deliver this Supplemental Indenture;

NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Subsidiary Guarantors, the Company, the Existing Subsidiary Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the holders of the Securities as follows:

1.Definitions. (a) Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

(b)    For all purposes of this Supplemental Indenture, except as otherwise herein expressly provided or unless the context otherwise requires: (i) the terms and expressions used herein shall have the same meanings as corresponding terms and expressions used in the Indenture; and (ii) the words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof.

2.Agreement to Guarantee. Each New Subsidiary Guarantor hereby agrees, jointly and severally with all other Existing Subsidiary Guarantors, to guarantee all of the obligations of the Company under the Securities on the terms and subject to the conditions set

forth in Article 11 of the Indenture and to be bound by all other applicable provisions of the Indenture. The Obligations of the New Subsidiary Guarantors shall be subordinated to all existing and future Senior Indebtedness of such Subsidiary Guarantors as set forth in Article 12 of the Indenture.

3.Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every holder of Securities heretofore or hereafter authenticated and delivered shall be bound hereby.

4.Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

5.Trustee Makes No Representation. The Trustee makes no representation as to the validity or sufficiency of this Supplemental Indenture.

6.Counterparts. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

7.Effect of Headings. The Section headings herein are for convenience only and shall not effect the construction thereof.

[signature page follows]

IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed as of the date first above written.

DENBURY GREEN PIPELINE – MONTANA, LLC
DENBURY GREEN PIPELINE – RILEY RIDGE, LLC
DENBURY THOMPSON PIPELINE, LLC
ENCORE PARTNERS GP HOLDINGS LLC
PLAIN ENERGY HOLDINGS, LLC
each as a New Subsidiary Guarantor
	By:	/s/ Mark C. Allen
	Name:	Mark C. Allen
	Title:	Senior Vice President and Chief Financial Officer

DENBURY RESOURCES INC., on behalf of itself and the
Existing Subsidiary Guarantors
	By:	/s/ Mark C. Allen
	Name:	Mark C. Allen
	Title:	Senior Vice President and Chief Financial Officer

WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee
	By:	/s/ John C. Stohlmann
	Name:	John C. Stohlmann
	Title:	Vice President

EX-4.BB

Exhibit 4(bb)

FIRST SUPPLEMENTAL INDENTURE

FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of December 31, 2014 among DENBURY RESOURCES INC., a Delaware corporation (the “Company”), on behalf of itself and the Subsidiary Guarantors under the Indenture referred to below (the “Existing Subsidiary Guarantors”), WELLS FARGO BANK, NATIONAL ASSOCIATION, as trustee under the Indenture referred to below (the “Trustee”), and the following indirect, wholly-owned subsidiaries of the Company (referred to herein collectively as the “New Subsidiary Guarantors”): (1) Denbury Green Pipeline - Montana, LLC, a Delaware limited liability company, (2) Denbury Green Pipeline - Riley Ridge, LLC, a Delaware limited liability company, (3) Denbury Thompson Pipeline, LLC, a Delaware limited liability company, (4) Encore Partners GP Holdings LLC, a Delaware limited liability company, and (5) Plain Energy Holdings, LLC, a Delaware limited liability company.

W I T N E S S E T H:

WHEREAS the Company has heretofore executed and delivered to the Trustee an Indenture dated as of April 30, 2014 (the “Indenture”), providing for the issuance of 5½% Senior Subordinated Notes due 2022 (the “Securities”);

WHEREAS the Company desires to cause the New Subsidiary Guarantors to execute and deliver to the Trustee a supplemental indenture pursuant to which the New Subsidiary Guarantors shall fully and unconditionally guarantee all of the obligations of the Company under the Securities pursuant to a Subsidiary Guarantee on the terms and conditions set forth herein; and

WHEREAS pursuant to Section 9.01 of the Indenture, the Trustee, the Company and Existing Subsidiary Guarantors are authorized to execute and deliver this Supplemental Indenture;

NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Subsidiary Guarantors, the Company, the Existing Subsidiary Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the holders of the Securities as follows:

1.Definitions. (a) Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

(b)    For all purposes of this Supplemental Indenture, except as otherwise herein expressly provided or unless the context otherwise requires: (i) the terms and expressions used herein shall have the same meanings as corresponding terms and expressions used in the Indenture; and (ii) the words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof.

2.Agreement to Guarantee. Each New Subsidiary Guarantor hereby agrees, jointly and severally with all other Existing Subsidiary Guarantors, to guarantee all of the obligations of the Company under the Securities on the terms and subject to the conditions set

forth in Article 11 of the Indenture and to be bound by all other applicable provisions of the Indenture. The Obligations of the New Subsidiary Guarantors shall be subordinated to all existing and future Senior Indebtedness of such Subsidiary Guarantors as set forth in Article 12 of the Indenture.

3.Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every holder of Securities heretofore or hereafter authenticated and delivered shall be bound hereby.

4.Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

5.Trustee Makes No Representation. The Trustee makes no representation as to the validity or sufficiency of this Supplemental Indenture.

6.Counterparts. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

7.Effect of Headings. The Section headings herein are for convenience only and shall not effect the construction thereof.

[signature page follows]

IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed as of the date first above written.

DENBURY GREEN PIPELINE – MONTANA, LLC
DENBURY GREEN PIPELINE – RILEY RIDGE, LLC
DENBURY THOMPSON PIPELINE, LLC
ENCORE PARTNERS GP HOLDINGS LLC
PLAIN ENERGY HOLDINGS, LLC
each as a New Subsidiary Guarantor
	By:	/s/ Mark C. Allen
	Name:	Mark C. Allen
	Title:	Senior Vice President and Chief Financial Officer

DENBURY RESOURCES INC., on behalf of itself and the
Existing Subsidiary Guarantors
	By:	/s/ Mark C. Allen
	Name:	Mark C. Allen
	Title:	Senior Vice President and Chief Financial Officer

WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee
	By:	/s/ John C. Stohlmann
	Name:	John C. Stohlmann
	Title:	Vice President

EX-10.OO

Exhibit 10(oo)

OFFICER RESIGNATION AGREEMENT

THIS OFFICER RESIGNATION AGREEMENT (this “Agreement”) is entered into by and between Denbury Resources Inc., a Delaware corporation (“DRI,” and together with its subsidiaries, collectively, the “Company”), and K. Craig McPherson (“McPherson”), and is effective as of the end of the business day on November 14, 2014 (the “Effective Date”), unless revoked by McPherson pursuant to, and in accordance with, Section 9(c).

WITNESSETH:

WHEREAS, McPherson has been employed by DRI since May of 2011 and has served as an officer of the Company since commencement of his employment, currently serving as DRI’s Senior Vice President and Chief Operating Officer;

WHEREAS, DRI and McPherson have reached certain agreements as to the terms and conditions of McPherson’s resignation as an officer, director, member and/or manager of the Company, and his continued employment (as a non-officer employee) related to operational and engineering matters; and

WHEREAS, McPherson has been in a position of special responsibility and trust with the Company during his employment, with access to highly sensitive, valuable, confidential and proprietary information regarding, among other things, the Company’s methods of operations, current and future business plans and strategies, personnel and finances, and other confidential and/or non-public information of the Company;

NOW, THEREFORE, in consideration of the premises and mutual covenants herein contained, and other valuable consideration, the receipt and sufficiency of which is hereby acknowledged, DRI and McPherson agree as follows:

1.Resignation as Officer. McPherson and DRI agree that effective as of the end of business on the Effective Date, McPherson shall resign as (a) Senior Vice President and Chief Operating Officer of DRI and (b) an officer, director, member and/or manager of all other DRI subsidiaries, and McPherson shall not thereafter serve the Company in an officer’s, director’s, member’s or manager’s capacity. In accordance with the terms of DRI’s Bylaws, McPherson agrees to provide a letter of resignation to DRI’s Secretary further evidencing his resignation as an officer, director, member and/or manager as provided in this Section 1.

2.Resignation Consideration. In exchange for, and in reliance on, the promises and covenants McPherson makes in this Agreement, the Company covenants and agrees to pay or provide McPherson with the following resignation compensation (the “Resignation Benefits”):

(a)the lump sum amount of $832,761.00 in cash (the “Lump Sum Amount”); provided, that, on or immediately prior to the date on which any payment of such Lump Sum Amount (whether in whole or in part) is to be made to McPherson or, if earlier, the date on which an amount is required to be included in the income of McPherson as a result of such payment, McPherson shall be required to pay to the Company, in cash, or the Company shall otherwise withhold from the payment of such Lump Sum Amount to McPherson, the amount which the Company reasonably determines to be necessary in order for the Company to comply with applicable federal or state tax withholding and the collection of employment taxes.

(b)during the Continuation Period (as defined below), the applicable premium payment under COBRA, when due, for McPherson and his qualified beneficiaries for the cost of benefit continuation under the Company’s major medical benefit plan, dental plan and vision insurance program, but excluding coverage under the Company’s flexible spending account plan and other insurance or other benefits provided by the Company (“COBRA Benefits”) in which McPherson has enrolled for the 2015 plan year, as such COBRA Benefits change as permitted by COBRA, beginning on December 1, 2014 and continuing and ending on May 31, 2016 (the “Continuation Period”); provided, that, the payment of such premium(s) shall be subject to the Company’s compliance with applicable federal or state tax withholding and the collection of employment taxes; provided, further, that, if McPherson does not properly elect COBRA coverage in accordance with the applicable benefit plans, McPherson will not receive the COBRA Benefits. For purposes of clarity, the COBRA Benefits provided pursuant to this Section 2(b) will run concurrently with any period of COBRA coverage McPherson may be

- 1 -

entitled to receive under applicable law and the applicable benefit plans, determined without regard to this Section 2(b).

The Company’s payment of the Resignation Benefits is subject to applicable federal, state, and local taxes and withholding, specifically including the withholding from any benefits payable under Sections 2(a) and 2(b). Without limitation of the foregoing, the Resignation Benefits provided under Section 2(b) shall also be reported as additional taxable compensation to McPherson, and McPherson shall be required to pay to the Company, in cash, or the Company shall otherwise withhold from the payment of such benefits to, or on behalf of, McPherson, the amount which the Company reasonably determines to be necessary in order for the Company to comply with applicable federal or state tax withholding and the collection of employment taxes.

Unless otherwise agreed by the parties, including with respect to the timing and payment of the Lump Sum Amount (which may be made in one or more payments if separately agreed by the parties), payment of the Lump Sum Amount will be made, if possible, on the next regularly-scheduled payroll date following the Effective Date (provided, that, such date is subsequent to the expiration of the revocation period set forth in Section 9(c), and McPherson has not otherwise revoked this Agreement pursuant to, and in accordance with, such Section 9(c)), but in no event later than March 15, 2015. Notwithstanding anything to the contrary contained herein, no Resignation Benefits or any other amounts shall be due or otherwise payable or commence under this Agreement if this Agreement is revoked pursuant to, and in accordance with, Section 9(c).

3.Equity Awards; Cash Awards. Those equity awards (consisting of Performance Share Awards, a Total Shareholder Return Performance Award, a Restricted Share Award, and awards under and pursuant to a Stock Appreciation Rights Agreement) and cash awards (consisting of a Performance Cash Award) to the extent held by McPherson immediately prior to the Effective Date shall be treated, governed and interpreted according to the terms of such awards, and as applicable, of DRI’s equity compensation plans under which they have been issued, including the vesting provisions thereof, and in a manner which accommodates both (a) McPherson’s transition from a full-time employee to a part-time employee under the terms of Section 4 below, and (b) McPherson no longer being an officer of the Company as provided in Section 1 above. The parties agree that (i) the payment or settlement of any applicable awards may be made and effectuated in a manner that the parties agree upon to, among other things, accommodate tax treatment and/or planning with respect to either party, and (ii) if, as a result of any applicable modifications implemented or otherwise provided by this Agreement, any of the applicable foregoing described non-performance based equity awards are treated as no longer being subject to a substantial risk of forfeiture, the settlement of any such awards that are treated as vested shall be delayed to a date which is at least six (6) months following McPherson’s “separation from service” within the meaning of Treasury Regulation Section 1.409A-1(h)(ii).

4.Continued Employment. McPherson shall be employed by the Company on a part-time basis for work on requested operational and engineering matters for the period (the “Employment Period”) commencing on the Effective Date and ending on April 1, 2015, and in lieu of and in replacement of McPherson’s current salary, during the Employment Period McPherson shall be paid a salary at the rate of $24,000.00 per year (pro-rated as applicable for the Employment Period) in accordance with, and subject to, the Company’s payroll policies that apply to other employees of the Company. McPherson’s employment shall not require him to render services to the Company on a full-time basis, but consistent with the provisions of Section 6(d) hereof, on a basis as requested from time to time by DRI’s Chief Executive Officer or Chief Financial Officer, at such places as may reasonably be agreed upon. In the event that McPherson is requested to work more than five (5) full days during any calendar month during the Employment Period, McPherson shall be entitled to be paid an additional $1,000.00 per day for each additional full day worked, or a commensurate proportion of such $1,000.00 amount for less than a full day’s work. In connection with McPherson’s part-time employment by the Company during the Employment Period, McPherson shall be entitled to reimbursement for reasonable and necessary expenses incurred in furtherance of the Company’s business in accordance with this Section 4 and Section 6(d), and otherwise in accordance with the Company’s policies, and upon presentation of documentation in accordance with the expense reimbursement policies of the Company as they may exist from time to time, and submission to the Company of adequate documentation in accordance with federal income tax regulations.

5.Non-Eligibility for Company Plans. Other than as expressly set forth herein, after the Effective Date McPherson will not be eligible to receive awards under DRI’s equity compensation plans made available to employees, nor will he be eligible to receive any severance benefits under the terms of any of DRI’s severance protection plans.

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6.McPherson’s Non-Competition and Other Covenants and Agreements. In consideration of the compensation paid and/or to be paid to McPherson, to which McPherson acknowledges he is not otherwise entitled, and the other agreements and consideration of DRI which are contained herein, McPherson agrees to the following covenants as reasonable and necessary for the protection of the Company’s business interests:

(a)    Definitions:

“Competing Business” means any person or entity that competes with or would compete with or displace, or that engages in any other activities so similar in nature or purpose to those of the Company set forth below so as to compete with, or displace or attempt to compete with or displace (i) in those geographic areas where the Company currently has activities as of the Effective Date or where it anticipates doing future business as part of the Company’s business plans disclosed to or developed by or in consultation with McPherson prior to the Effective Date, any of the activities of the Company which involve or encompass the purchase, ownership or development of CO₂, in natural, anthropogenic or any other form, CO₂ pipelines, or the injection of CO₂ into previously producing oil fields for the purpose of tertiary recovery of remaining oil, or (ii) in the Gulf Coast and Rocky Mountain regions where the Company currently has activities as of the Effective Date, the purchase, ownership or development of oil fields with the intent of CO₂ enhanced oil recovery operations.

“Covered Persons” means any person employed by the Company either as an employee, consultant or advisor as of the Effective Date, or hired by the Company prior to the Non-Competition Termination Date (as defined in Section 6(b) below).

(b)No Unfair Competition; Non-Solicitation Agreement. McPherson covenants and agrees that he will not, either directly or indirectly (whether personally or through another business, entity or person), for the period commencing on the Effective Date and ending on April 1, 2016 (the “Non-Competition Termination Date”):

(i)    work for, supervise, assist or participate in, a Competing Business in any capacity (as owner, employee, consultant, advisor, contractor, officer, director, lender, investor, agent, or otherwise) or otherwise engage in any Competing Business, or

(ii)    (1) recruit, solicit, or induce, (2) attempt to recruit, solicit or induce, or (3) encourage others to recruit, solicit or induce, any Covered Person to diminish, curtail, divert, or cancel its or their business relationship with, or employment by, the Company, specifically including providing, directly or indirectly, a reference to a recruiter, acquaintance or competitor that an employee, consultant or advisor to the Company may be amenable to recruitment from a third party.

This Section 6(b) creates a narrowly tailored restraint in order to avoid unfair competition and irreparable harm to the Company and is not intended or to be construed as a general restraint from McPherson engaging in a lawful profession or a general covenant against competition in the oil and gas industry through the Non-Competition Termination Date. To this end, within the constraints of the preceding provisions of this Section 6(b), DRI agrees that this Section 6(b) will not prohibit McPherson’s work, engagement, or investment in the oil and gas industry (the “Activities”) so long as the Activities do not involve McPherson or entities, persons or groups for whom McPherson works, consults or invests (x) competing with or displacing the specified activities of the Company in those geographic areas or regions enumerated above in Section 6(a), or (y) using the Company’s data or non-public business plans disclosed or known to McPherson during his employment by the Company, in both cases provided that McPherson obtains the prior express written approval of DRI’s Chief Executive Officerof any such work, engagement or investment in such Activities; provided, that, nothing in this Section 6 will prohibit the ownership of less than 10% of the publicly traded capital stock of an entity so long as this is not a controlling interest or mutual fund investment.

If McPherson wishes to pursue Activities prior to the Non-Competition Termination Date, he agrees to present to the Chief Executive Officer of DRI a written request and description of any such proposed Activities, which written request and description shall include, among other things and as applicable, (i) the geographical

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area within which McPherson desires to pursue the Activities, (ii) the general terms of any proposed acquisition of properties or leases, and (iii) a geological review of the proposal. DRI agrees to respond in writing to McPherson’s request within 10 business days of receipt of such written request and description, at the address provided in Section 11 below, stating DRI’s approval (which can only be provided by DRI’s Chief Executive Officer and which may be granted (if at all) subject to the satisfaction of various conditions) or disapproval of such request and Activities, and the specific reasons for any applicable disapproval (which may include, without limitation, the lack of appropriate information and detail upon which to adequately analyze, assess and/or otherwise approve any such proposal) to the extent DRI can do so without disclosing to McPherson otherwise non-public information.

(c)No Personal Use of CompanyOil and Gas Resources. McPherson covenants and agrees that in conjunction with his continuing employment by the Company or otherwise, he will not utilize Company oil and gas resources, including, but not limited to, maps, seismic information, feasibility studies, personnel, computers, software, books and records, or any other corporate assets, in connection with the Activities for his own account or the account of any entity, persons or groups for whom he works or consults or in which he invests, unless DRI’s Chief Executive Officer provides his prior express written consent.

(d)Cooperation and Assistance.In exchange for the compensation, covenants, and other good and valuable consideration provided by DRI herein, McPherson covenants and agrees that he will, until the Non-Competition Termination Date, (i) provide whatever cooperation and/or assistance is needed for any legal matters, proceedings or issues the Company may face, and (ii) cooperate with, and assist the Company and its employees in effecting, an orderly transition of all functions, duties and responsibilities of McPherson as an officer, director and manager to one or more other employees of the Company, as the Company shall reasonably request. Additionally, McPherson agrees to provide such assistance in a professional manner, and in no event take any action that does, or could reasonably, create a conflict of interest between himself and the Company, or that could subject either him or the Company to civil or criminal liability or is contrary to the policies or procedures of the Company.

(e)Nondisparagement. The parties hereto agree that they will refrain from engaging in any conduct, verbal or otherwise, that would disparage or harm the reputation of the other or, insofar as this Agreement pertains to DRI, its former and present parents, subsidiaries, and/or affiliates, along with its predecessors, successors and/or assigns, if any, as well as their respective former and present directors, officers, managers, general or limited partners, representatives, agents, employees and/or attorneys, if any, jointly and severally (collectively, the “DRI Released Parties”), and McPherson further covenants and agrees that he will not say anything of a disparaging nature about the operations, management, or performance of the DRI Released Parties. Such restricted conduct shall include, but not be limited to, any negative statements made orally or in writing by either of the parties about the other or any of the DRI Released Parties.

Nothing in this Agreement shall prohibit McPherson from providing testimony in response to a valid subpoena, court order, regulatory request or other judicial, administrative or legal process or otherwise as required by law. To the fullest extent permitted by law, McPherson agrees to notify the Company as promptly as practicable after receiving any request for testimony or information in response to a subpoena, court order, regulatory request or other judicial, administrative or legal process or otherwise as required by law.

(f)Confidential Information and Property. Other than the Company-issued laptop computer, iPad and cell-phone which McPherson is currently using and entitled to retain (subject to the Company’s policies and procedures), McPherson covenants and agrees that he has returned, or within three (3) days after the Effective Date will return, to the Company any and all Company property, equipment and other tangible items, including, without limitation, keys, building access cards and corporate credit cards, and any and all originals and/or copies of documents relating to the business of the Company or any of the other DRI Released Parties. McPherson further covenants and agrees that he will not directly or indirectly disclose to anyone, or use for his own benefit or the benefit of anyone other than the Company, any confidential information that he has received through his employment with the Company. “Confidential information” shall include any information that has been disclosed or made available to, or created by, McPherson, and which was at the time of disclosure, availability or creation confidential or proprietary to the Company, and involves or relates to the Company’s current and

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future business plans and strategies, methods of operations or operational techniques, financial, management and/or employee information, information regarding the Company’s practices and processes, or any other non-public information. McPherson further agrees that in the event it appears that he will be compelled by law or judicial process to disclose any such confidential information to avoid potential liability, he will notify the Company in writing immediately upon his receipt of a subpoena or other legal process.

7.Mutually Dependent. The provisions of Section 4 above regarding McPherson’s continued employment related to operational and engineering matters and DRI’s continuing obligations to McPherson which are related thereto, and the covenants and agreements of McPherson set forth in Section 6 above, are mutually dependent, and McPherson understands and agrees that a violation of any of the provisions of Section 6 above will be considered a material breach of this Agreement, and further acknowledges and agrees that irreparable harm to the Company would result from breach by him of any such provisions. Accordingly, notwithstanding any provision of this Agreement to the contrary, McPherson will permanently forfeit any rights to continued employment by the Company as set out under the provisions of Section 4 above, and the Company may immediately terminate such employment, beginning on the date that either (i) McPherson violates any provision of Section 6 above, or (ii) all or any part of, or the application of, Section 6 above is held or found invalid or unenforceable for any reason whatsoever by a court of competent jurisdiction in an action between McPherson and DRI, and on such date any continuing obligations of the Company to McPherson tied to his continued employment shall be extinguished.

8.Release and Waiver by Parties. For and in consideration of the payments provided to be made under the provisions of Section 2 above, and the continued employment of McPherson under the provisions of Section 4 hereof, as well as the covenants and other consideration of DRI contained herein, the receipt and sufficiency of which are hereby acknowledged by McPherson, McPherson, on behalf of himself and his family, assigns, representatives, agents, and/or heirs, if any (collectively with McPherson, the “McPherson Parties”), hereby covenants not to sue and fully, finally and forever releases, acquits and discharges the DRI Released Parties, and/or any one of them, from any and all claims, demands, actions or liabilities of whatever kind or character, whether known or unknown, which the McPherson Parties, or any one of them, has or might claim to have against the DRI Released Parties, and/or any one of them, for any and all injuries, damages (actual or punitive), losses or attorneys’ fees, if any, incurred by any McPherson Party arising out of or in connection with any occurrence which transpired prior to the Effective Date, including, without limitation:

(a)All claims and causes of action arising under contract, tort, statute, or other common law, including, without limitation, breach of contract, fraud, estoppel, misrepresentation, express or implied duties of good faith and fair dealing, wrongful discharge, discrimination, retaliation, harassment, negligence, gross negligence, false imprisonment, assault and battery, conspiracy, intentional or negligent infliction of emotional distress, slander, libel, defamation, refusal to perform an illegal act and invasion of privacy.

(b)All claims and causes of action arising under any federal, state, or local law, regulation, or ordinance, including, without limitation, claims under the AGE DISCRIMINATION IN EMPLOYMENT ACT, as amended, the Civil Rights Act of 1964, as amended, the Civil Rights Act of 1866, the Americans With Disabilities Act, the Fair Labor Standards Act, the Family and Medical Leave Act, the Employee Retirement Income Security Act as amended (except for vested benefits to which he is entitled), the Texas Commission on Human Rights Act, the Texas Labor Code, the Texas Government Code, as well as any claims for compensation of any nature whatsoever, employee benefits, vacation pay (except as otherwise provided by Company policy), expense reimbursement, consulting, equity awards, severance pay, pension or profit sharing benefits, health or welfare benefits, bonus compensation, commissions, deferred compensation or other remuneration, or employment benefits or compensation, except as specifically set forth in Section 2, “Resignation Consideration,” Section 3, “Equity Awards; Cash Awards,” and Section 4, “Continued Employment.”

(c)All claims and causes of action for past or future loss of pay or benefits, expenses, damages for pain and suffering, mental anguish or emotional distress damages, liquidated damages, punitive damages, compensatory damages, injunctive relief, attorneys’ fees, interest, court costs, physical or mental injury, damage to reputation, and any other injury, loss, damage or expense or any other legal or equitable remedy of any kind whatsoever.

(d)All claims and causes of action arising out of or in any way connected with, directly or indirectly, McPherson’s employment with the Company, or any incident thereof, including, without limitation, (i) his

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treatment by the Company, (ii) the terms and conditions of his employment, (iii) the manner or amounts in which McPherson was paid or compensated by the Company, and (iv) the separation of McPherson’s employment.

(e)All claims and causes of action of any kind or character which could have been alleged in any lawsuit or administrative charge, claim or proceeding that could have been filed against the DRI Released Parties (or any one of them) by any McPherson Party on its own behalf or on behalf of any other person.

Nothing in this Agreement will prevent McPherson from filing a charge or complaint with the Equal Employment Opportunity Commission or any other federal or state administrative agency, or participating in any investigation conducted by any federal or state administrative agency; provided, however, that, McPherson agrees that any right to personal legal or equitable relief he may have in connection with such charge, complaint or investigation are hereby barred.

McPherson acknowledges and agrees that the compensation referenced in Section 2 above does not constitute monies to which he would otherwise be entitled as a result of his prior or current employment with the Company, and that these monies constitute fair and adequate compensation for the promises and covenants of McPherson set forth in this Agreement. McPherson agrees and acknowledges that no further amounts are due to him for cash compensation of any nature whatsoever, including salary, severance pay, performance cash or bonuses, or for equity awards, employee benefits, deferred compensation, commissions, vacation pay (except as otherwise provided by Company policy), pension, profit sharing benefits, health or welfare benefits, expense reimbursement, consulting, outplacement services, attorneys’ fees, pay in lieu of notice, or for any other amounts, except as specifically set forth in Section 2, “Resignation Consideration,” Section 3, “Equity Awards; Cash Awards” and Section 4, “Continued Employment.”

DRI also agrees not to sue and fully, finally and forever releases, acquits and discharges McPherson from any and all claims, demands, actions or liabilities of whatever kind or character, whether known or unknown as of the Effective Date, which DRI or anyone acting on its behalf has or might claim to have against McPherson for any and all injuries, damages (actual and punitive), losses, or attorneys’ fees, if any, incurred by DRI. For the avoidance of doubt, and notwithstanding anything to the contrary contained in this Agreement, DRI acknowledges that the Indemnification Agreement dated May 2, 2011 by and between DRI and McPherson shall continue in full force and effect pursuant to the terms set forth, and for all purposes contemplated, therein.

9.Consultation with Attorney and Review Period.

(a)McPherson is advised, and acknowledges that he has been advised, to consult with an attorney prior to executing this Agreement concerning the meaning, import, and legal significance of this Agreement. McPherson acknowledges that he has read this Agreement, as signified by his signature below, and is voluntarily executing the same after, if sought, advice of counsel for the purposes and consideration herein expressed.

(b)McPherson affirms, acknowledges and agrees that (i) he has read and understands the terms of this Agreement, (ii) he is over the age of eighteen (18) years and is otherwise competent to execute this Agreement, (iii) he was given this Agreement on November 16, 2014 (including the disclosure information which is contained in Exhibit A attached to this Agreement and provided pursuant to the Older Workers Benefit Protection Act), and has been given and provided the opportunity to consider and accept this Agreement until 5:00 p.m. (CST) on December 31, 2014 (a period of not less than forty-five (45) days following the date McPherson was provided this Agreement and the above referenced disclosure attached as Exhibit A) by signing it and returning it to James S. Matthews, Senior Vice President and General Counsel of DRI, at the address provided in Section 11 below, after which time it would have expired and be void if not received, (iv) any changes to this Agreement from the one that was initially presented on November 16, 2014 as a result of negotiation between him and the Company, whether material or immaterial, did not restart or extend the running of the applicable 45-day period of time in which he had to sign this Agreement, (v) he is entering into this Agreement knowingly and voluntarily and without any undue influence or pressures, and (vi) this Agreement represents and constitutes a full and final resolution of any and all claims, if any, which the McPherson Parties (or any one of them) may have against the DRI Released Parties (or any one of them).

(c)McPherson acknowledges that he shall be entitled to revoke this Agreement at any time prior to the expiration of seven (7) days after the date of execution of this Agreement by McPherson by providing

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written notice of such revocation to James S. Matthews, Senior Vice President and General Counsel of DRI, at the address provided in Section 11 below.

10.Governing Law. This Agreement shall be governed by, and construed under, the laws of the State of Texas.

11.Notice. Any notice, payment, demand or communication required or permitted to be given by this Agreement shall be deemed to have been sufficiently given or served for all purposes if delivered personally to and signed for by the party or to any officer of the party to whom the same is directed, or if sent by registered or certified mail, return receipt requested, postage and charges prepaid, addressed to such party at the address set forth below or to such other address as shall have been furnished in writing by such party for whom the communication is intended. Any such notice shall be deemed to be given on the date so delivered.

Denbury Resources Inc.

5320 Legacy Drive

Plano, Texas 75024

Attention: James S. Matthews

SVP and General Counsel

K. Craig McPherson

8708 Baultusrol Drive

Flower Mound, Texas 75022

12.Severability. In the event that any one or more of the provisions contained in this Agreement is for any reason held to be unenforceable in any respect under the laws of any applicable State or of the United States of America, such unenforceability will not affect any other provision of this Agreement, but with respect only to the jurisdiction holding the provision to be unenforceable, this Agreement will then be construed as if such unenforceable provision or provisions had never been contained herein.

13.Entire Agreement. This Agreement constitutes the sole agreement between the parties and supersedes any and all other agreements, oral or written, relating to the subject matter covered by the Agreement, with the exception of (i) any indemnity agreement which may exist between DRI and McPherson, and which indemnity agreement shall remain in force subject to its terms and independent of this Agreement, and (ii) the terms of DRI’s equity compensation plans and the award agreements made thereunder which are not otherwise specifically addressed in this Agreement.

14.Waiver. Any waiver or breach of any of the terms or conditions of this Agreement shall not operate as a waiver of any other breach of such terms or conditions, or any other terms or conditions, nor shall any failure to enforce any provision hereof operate as a waiver of such provision or any other provision hereof.

15.Assignment. This Agreement is personal to McPherson and the rights and interests of McPherson hereunder may not be sold, transferred, assigned or pledged.

16.Successors. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective heirs, representatives, successors (including specifically any successor to DRI by merger, reorganization or otherwise).

17.Disputes.

(a)If a dispute arises under this Agreement arising out of, related to or in connection with, the payment of amounts provided hereunder to be paid by DRI to McPherson, the timing of such payments or their calculation, or questions regarding the breach of the terms hereof or the issue of arbitrability (a “Dispute”), and the Dispute cannot be settled through direct discussions by the parties within a reasonable amount of time, DRI and McPherson agree that such Disputes shall be referred to and finally resolved by binding arbitration in accordance with the provisions of Exhibit B hereto. DRI and McPherson will split on an equal basis the actual fees and expenses of the arbitrators, and the parties shall bear equally all other expenses of such arbitration, unless the arbitrators determine that a different

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allocation would be more equitable. The award of the arbitrators will be the exclusive remedy of the parties for such Disputes.

(b)Jurisdiction and venue of any action relating to this Agreement or McPherson’s employment by the Company (subject to the provisions of Section 17(a) hereof) shall be in the federal or state courts sitting in, or having jurisdiction over, Plano, Collin County, Texas.

18.Consequences of Breach. Without limitation of the terms and provisions of this Agreement, including, without limitation, Section 8 hereof, (a) DRI agrees that it will indemnify and hold each of the McPherson Parties harmless from any loss, cost, damage, or expense (including attorneys’ fees, except as prohibited by law) incurred by any of them arising out of DRI’s breach of any portion of this Agreement, and (b) McPherson (i) agrees that he will indemnify and hold each of the DRI Released Parties harmless from any loss, cost, damage, or expense (including attorneys’ fees, except as prohibited by law) incurred by any of them arising out of McPherson’s breach of any portion of this Agreement, (ii) agrees and understands that his entitlement to and retention of the Resignation Benefits that the Company has agreed to provide him herein is expressly conditioned upon McPherson’s ongoing fulfillment of his promises, covenants and obligations herein, and (iii) agrees, to the extent permitted by law, to immediately return or repay the amounts he has received from the Company in connection with this Agreement in excess of $500.00 upon a finding or ruling by a court of competent jurisdiction that McPherson breached a provision of this Agreement. In the event DRI concludes or, in good faith, suspects that McPherson has breached this Agreement, no additional payments will be provided under this Agreement unless and until the Company is so ordered to make such payment by a court of competent jurisdiction.

19.Amendments. Any modification of this Agreement or additional obligation assumed by any party in connection with this Agreement shall be binding only if evidenced in writing signed by both parties to this Agreement or an authorized representative of each party. Additionally, this Agreement cannot be changed or terminated orally, but may be changed only through written addendum or amendment executed by both parties.

20.Remedies. In addition to the other remedies provided herein or by applicable law, any breach by either party of any of the terms and/or conditions contained in this Agreement applicable to such party shall give the other party the right to discontinue the performance of any of its unperformed duties and obligations under this Agreement to the extent permitted by applicable law. In the event either party breaches any term or condition of this Agreement, any delay by the other party to enforce this Agreement (or any term or condition hereof) shall not be deemed a waiver, acceptance, or acquiescence. Without limitation of any other provision of this Agreement, including, without limitation, Section 14 hereof, no waiver granted by either party hereunder shall bind such party unless supported by consideration, executed in writing, and delivered to the other party by an authorized officer of the granting party.

21.Counterparts; Signatures. This Agreement may be executed in several counterparts, each of which shall be deemed an original and all of which shall constitute one Agreement; it being understood that the parties need not sign the same counterparts. The exchange of copies of this Agreement and of signature pages by facsimile transmission, by electronic mail in “portable document format” (“.pdf”') form, or by any other electronic means, or by combination of such means, shall constitute effective execution and delivery of this Agreement as to the parties and may be used in lieu of the original Agreement for all purposes. Signatures of the parties transmitted by any means shall be deemed to be their original signatures for all purposes.

[Signature Page to Follow]

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IN WITNESS WHEREOF, the parties hereto affixed their signatures hereunder as of the date set forth below their signature blocks, to be effective as of the Effective Date.

DENBURY RESOURCES INC.
By:	/s/ James S. Matthews
Name:	James S. Matthews
Title:	Senior Vice President and General Counsel
Date:	November 25, 2014

K. CRAIG MCPHERSON
/s/ K. Craig McPherson
Date:	November 25, 2014

[Signature Page]

EXHIBIT A

The following information is provided in accordance with the Age Discrimination in Employment Act (“ADEA”) and the Older Workers Benefit Protection Act:

1. The class, unit, or group of individuals covered by the program (the “Decisional Unit”) includes certain Senior Vice Presidents and a regional Vice President, each of whom had an office at the Plano, Texas corporate headquarters of Denbury Resources Inc. (the “Company”).

2. The eligibility factors used to select employees for termination within the Decisional Unit include relative functional performance and responsibilities.

3. All employees in the Decisional Unit who are being offered consideration under a waiver agreement and asked to waive claims under the ADEA must sign the agreement and return it to the Company within 45 days after receiving the waiver agreement. Once the signed waiver agreement is returned to the Company, the employee has seven (7) days to revoke the waiver agreement.

4. The following is a listing of the ages and job titles of employees in the Decisional Unit who were and were not selected for termination and offered consideration for signing a waiver:

Job Title	Age	Selected	Not Selected
SVP and Chief Operating Officer	56	X
SVP – Production Operations	56	X
Vice President – East Region	56	X

A-1

EXHIBIT B

DISPUTE RESOLUTION PROCEDURES

1.Applicable Law/Arbitration. Venue for the arbitration provided under Section 17(a) of the Agreement shall be in Plano, Collin County, Texas. Except for the limited rights described in Section 9 below, the parties waive their right to file a lawsuit in a court of law to prosecute any Dispute.

2.Negotiation. When a Dispute has arisen and negotiations have reached an impasse, either party may give the other party written notice of the Dispute. In the event such notice is given, the parties shall attempt to resolve the Dispute promptly by negotiation. Within ten (10) days after delivery of the notice, the receiving party shall submit to the other a written response. Thereafter, the parties shall promptly attempt to resolve the Dispute. All reasonable requests for information made by one party to the other will be honored.

3.Confidentiality of Settlement Negotiations. All negotiations and proceedings pursuant to Section 2 above are confidential and shall be treated as compromise and settlement negotiations for purposes of applicable rules of evidence and any additional confidentiality protections provided by applicable law.

4.Commencement of Arbitration. If the Dispute has not been resolved by negotiation within fifteen (15) days of the disputing party’s notice, or if the parties have failed to confer within fifteen (15) days after delivery of the notice, either party may then initiate arbitration by providing written notice of arbitration to the other party. In order to be valid, the notice shall contain a precise and complete statement of the Dispute. Within fifteen (15) days of receipt of the notice initiating arbitration, the receiving party shall respond by providing a written response which shall include its precise and complete response to the Dispute, and which includes any counter Dispute that the responding party may have.

5.Selection of Arbitrator(s). The arbitration may be conducted and decided by a single person that is mutually agreeable to the parties and knowledgeable and experienced in the type of matter that is the subject of the Dispute if a single arbitrator can be agreed upon by the parties. If the parties cannot agree on a single arbitrator within ten (10) days of the date of the response to the notice of arbitration, then the arbitration shall be determined by a panel of three (3) arbitrators. To select the three arbitrators, each party shall, within ten (10) days of the expiration of the foregoing ten day period, select a person that it believes has the qualifications set forth above as its designated arbitrator, and such arbitrators so designated shall mutually agree upon a similarly qualified third person to complete the arbitration panel and serve as its chairman. In the event that the persons selected by the parties are unable to agree upon a third member of the arbitration panel within ten (10) days after the selection of the latter of the two arbitrators, then he/she shall be selected from the CPR (as defined below) panel using the CPR rules. Once selected, no arbitrator shall have any ex parte communications with either party.

6.Arbitration Process. The arbitration hearing shall commence within a reasonable time after the selection of the arbitrator(s), as set by the arbitrator(s). The arbitrator(s), shall allow the parties to engage in pre-hearing discovery, to include exchanging (i) requests for and production of relevant documents, (ii) up to fifteen (15) interrogatories, (iii) up to fifteen (15) requests for admissions, and producing for deposition and at the arbitration hearing, up to four (4) persons within each parties’ control. Any additional discovery shall only occur by agreement of the parties or as ordered by the arbitrator(s) upon a finding of good cause. The arbitration shall be conducted under the rules of the CPR International Institute for Conflict Prevention & Resolution (“CPR”) in effect on the date of notice of the Dispute for dispute resolution rules for non-administered arbitration of business disputes. The parties may agree on such other rules to govern the arbitration that are not set out in this provision as they may mutually deem necessary.

7.Arbitration Decision. The arbitrator(s) shall have the power to award interim relief, and to grant specific performance. The arbitrator(s) may award interest at the “prime rate” as listed under “Market Data” in the Wall Street Journal on the date of any such award. Except as may be specifically limited elsewhere in this Exhibit B, the arbitrator’s decision may be based on such factors and evidence as the arbitrator(s) deems fit. The arbitrator(s) shall be required to render a written decision to the parties no later than fifteen (15) days after the completion of the hearing.

8.Arbitration Award. The award of a majority of the arbitrator(s) shall be final, conclusive and binding. The award rendered by the arbitrator(s) may be entered in any court having jurisdiction in respect thereof, including any court in which an injunction may have been sought.

B-1

9.Injunctive Relief. With respect to the Dispute, controversy or claim between the parties, nothing in this Exhibit B shall prevent a party from immediately seeking injunctive relief in a court to maintain the status quo during the arbitration.

B-2

EX-10.PP

Exhibit 10(pp)

OFFICER RESIGNATION AGREEMENT

THIS OFFICER RESIGNATION AGREEMENT (this “Agreement”) is entered into by and between Denbury Resources Inc., a Delaware corporation (“DRI,” and together with its subsidiaries, collectively, the “Company”), and Charles E. Gibson (“Gibson”), and is effective as of the end of the business day on November 14, 2014 (the “Effective Date”), unless revoked by Gibson pursuant to, and in accordance with, Section 9(c).

WITNESSETH:

WHEREAS, Gibson has been employed by DRI since September of 2002 and is currently serving as DRI’s Senior Vice President - Production Operations;

WHEREAS, DRI and Gibson have reached certain agreements as to the terms and conditions of Gibson’s resignation as an officer of the Company, and his continued employment (as a non-officer employee) related to operational and engineering matters; and

WHEREAS, Gibson has been in a position of special responsibility and trust with the Company during his employment, with access to highly sensitive, valuable, confidential and proprietary information regarding, among other things, the Company’s methods of operations, current and future business plans and strategies, personnel and finances, and other confidential and/or non-public information of the Company;

NOW, THEREFORE, in consideration of the premises and mutual covenants herein contained, and other valuable consideration, the receipt and sufficiency of which is hereby acknowledged, DRI and Gibson agree as follows:

1.Resignation as Officer. Gibson and DRI agree that effective as of the end of business on the Effective Date, Gibson shall resign as (a) Senior Vice President - Production Operations of DRI and (b) an officer of all other DRI subsidiaries, and Gibson shall not thereafter serve the Company in an officer’s capacity. In accordance with the terms of DRI’s Bylaws, Gibson agrees to provide a letter of resignation to DRI’s Secretary further evidencing his resignation as an officer as provided in this Section 1.

2.Resignation Consideration. In exchange for, and in reliance on, the promises and covenants Gibson makes in this Agreement, the Company covenants and agrees to pay or provide Gibson with the following resignation compensation (the “Resignation Benefits”):

(a)the lump sum amount of $521,267.00 in cash (the “Lump Sum Amount”); provided, that, on or immediately prior to the date on which any payment of such Lump Sum Amount (whether in whole or in part) is to be made to Gibson or, if earlier, the date on which an amount is required to be included in the income of Gibson as a result of such payment, Gibson shall be required to pay to the Company, in cash, or the Company shall otherwise withhold from the payment of such Lump Sum Amount to Gibson, the amount which the Company reasonably determines to be necessary in order for the Company to comply with applicable federal or state tax withholding and the collection of employment taxes.

(b)during the Continuation Period (as defined below), the applicable premium payment under COBRA, when due, for Gibson and his qualified beneficiaries for the cost of benefit continuation under the Company’s major medical benefit plan, dental plan and vision insurance program, but excluding coverage under the Company’s flexible spending account plan and other insurance or other benefits provided by the Company (“COBRA Benefits”) in which Gibson has enrolled for the 2015 plan year, as such COBRA Benefits change as permitted by COBRA, beginning on December 1, 2014 and continuing and ending on May 31, 2016 (the “Continuation Period”); provided, that, the payment of such premium(s) shall be subject to the Company’s compliance with applicable federal or state tax withholding and the collection of employment taxes; provided, further, that, if Gibson does not properly elect COBRA coverage in accordance with the applicable benefit plans, Gibson will not receive the COBRA Benefits. For purposes of clarity, the COBRA Benefits provided pursuant

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to this Section 2(b) will run concurrently with any period of COBRA coverage Gibson may be entitled to receive under applicable law and the applicable benefit plans, determined without regard to this Section 2(b).

The Company’s payment of the Resignation Benefits is subject to applicable federal, state, and local taxes and withholding, specifically including the withholding from any benefits payable under Sections 2(a) and 2(b). Without limitation of the foregoing, the Resignation Benefits provided under Section 2(b) shall also be reported as additional taxable compensation to Gibson, and Gibson shall be required to pay to the Company, in cash, or the Company shall otherwise withhold from the payment of such benefits to, or on behalf of, Gibson, the amount which the Company reasonably determines to be necessary in order for the Company to comply with applicable federal or state tax withholding and the collection of employment taxes.

Unless otherwise agreed by the parties, including with respect to the timing and payment of the Lump Sum Amount (which may be made in one or more payments if separately agreed by the parties), payment of the Lump Sum Amount will be made, if possible, on the next regularly-scheduled payroll date following the Effective Date (provided, that, such date is subsequent to the expiration of the revocation period set forth in Section 9(c), and Gibson has not otherwise revoked this Agreement pursuant to, and in accordance with, such Section 9(c)), but in no event later than March 15, 2015. Notwithstanding anything to the contrary contained herein, no Resignation Benefits or any other amounts shall be due or otherwise payable or commence under this Agreement if this Agreement is revoked pursuant to, and in accordance with, Section 9(c).

3.Equity Awards; Cash Awards. Those equity awards (consisting of Performance Share Awards, a Total Shareholder Return Performance Award, a Restricted Share Award, and awards under and pursuant to a Stock Appreciation Rights Agreement) and cash awards (consisting of a Performance Cash Award and a Deferred Cash Award) to the extent held by Gibson immediately prior to the Effective Date shall be treated, governed and interpreted according to the terms of such awards, and as applicable, of DRI’s equity compensation plans under which they have been issued, including the vesting provisions thereof, and in a manner which accommodates both (a) Gibson’s transition from a full-time employee to a part-time employee under the terms of Section 4 below, and (b) Gibson no longer being an officer of the Company as provided in Section 1 above. The parties agree that (i) the payment of any applicable cash awards may be made and effectuated in a manner that the parties agree upon to, among other things, accommodate tax treatment and/or planning with respect to either party, and (ii) if, as a result of any applicable modifications implemented or otherwise provided by this Agreement, any of the applicable foregoing described non-performance based equity awards are treated as no longer being subject to a substantial risk of forfeiture, the settlement of any such awards that are treated as vested shall be delayed to a date which is at least six (6) months following Gibson’s “separation from service” within the meaning of Treasury Regulation Section 1.409A-1(h)(ii).

4.Continued Employment. Gibson shall be employed by the Company on a part-time basis for work on requested operational and engineering matters for the period (the “Employment Period”) commencing on the Effective Date and ending on April 1, 2015, and in lieu of and in replacement of Gibson’s current salary, during the Employment Period Gibson shall be paid a salary at the rate of $20,000.00 per year (pro-rated as applicable for the Employment Period) in accordance with, and subject to, the Company’s payroll policies that apply to other employees of the Company. Gibson’s employment shall not require him to render services to the Company on a full-time basis, but consistent with the provisions of Section 6(d) hereof, on a basis as requested from time to time by DRI’s Chief Executive Officer or Chief Financial Officer, at such places as may reasonably be agreed upon. In the event that Gibson is requested to work more than five (5) full days during any calendar month during the Employment Period, Gibson shall be entitled to be paid an additional $800.00 per day for each additional full day worked, or a commensurate proportion of such $800.00 amount for less than a full day’s work. In connection with Gibson’s part-time employment by the Company during the Employment Period, Gibson shall be entitled to reimbursement for reasonable and necessary expenses incurred in furtherance of the Company’s business in accordance with this Section 4 and Section 6(d), and otherwise in accordance with the Company’s policies, and upon presentation of documentation in accordance with the expense reimbursement policies of the Company as they may exist from time to time, and submission to the Company of adequate documentation in accordance with federal income tax regulations.

5.Non-Eligibility for Company Plans. Other than as expressly set forth herein, after the Effective Date Gibson will not be eligible to receive awards under DRI’s equity compensation plans made available to employees, nor will he be eligible to receive any severance benefits under the terms of any of DRI’s severance protection plans.

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6.Gibson’s Non-Competition and Other Covenants and Agreements. In consideration of the compensation paid and/or to be paid to Gibson, to which Gibson acknowledges he is not otherwise entitled, and the other agreements and consideration of DRI which are contained herein, Gibson agrees to the following covenants as reasonable and necessary for the protection of the Company’s business interests:

(a)Definitions:

“Competing Business” means any person or entity that competes with or would compete with or displace, or that engages in any other activities so similar in nature or purpose to those of the Company set forth below so as to compete with, or displace or attempt to compete with or displace (i) in those geographic areas where the Company currently has activities as of the Effective Date or where it anticipates doing future business as part of the Company’s business plans disclosed to or developed by or in consultation with Gibson prior to the Effective Date, any of the activities of the Company which involve or encompass the purchase, ownership or development of CO₂, in natural, anthropogenic or any other form, CO₂ pipelines, or the injection of CO₂ into previously producing oil fields for the purpose of tertiary recovery of remaining oil, or (ii) in the Gulf Coast and Rocky Mountain regions where the Company currently has activities as of the Effective Date, the purchase, ownership or development of oil fields with remaining oil potentially recoverable through CO₂ enhanced oil recovery operations.

“Covered Persons” means any person employed by the Company either as an employee, consultant or advisor as of the Effective Date, or hired by the Company prior to the Non-Competition Termination Date (as defined in Section 6(b) below).

(b)No Unfair Competition; Non-Solicitation Agreement. Gibson covenants and agrees that he will not, either directly or indirectly (whether personally or through another business, entity or person), for the period commencing on the Effective Date and ending on April 1, 2016 (the “Non-Competition Termination Date”):

(i)    work for, supervise, assist or participate in, a Competing Business in any capacity (as owner, employee, consultant, advisor, contractor, officer, director, lender, investor, agent, or otherwise) or otherwise engage in any Competing Business, or

(ii)    (1) recruit, solicit, or induce, (2) attempt to recruit, solicit or induce, or (3) encourage others to recruit, solicit or induce, any Covered Person to diminish, curtail, divert, or cancel its or their business relationship with, or employment by, the Company, specifically including providing, directly or indirectly, a reference to a recruiter, acquaintance or competitor that an employee, consultant or advisor to the Company may be amenable to recruitment from a third party.

This Section 6(b) creates a narrowly tailored restraint in order to avoid unfair competition and irreparable harm to the Company and is not intended or to be construed as a general restraint from Gibson engaging in a lawful profession or a general covenant against competition in the oil and gas industry through the Non-Competition Termination Date. To this end, within the constraints of the preceding provisions of this Section 6(b), DRI agrees that this Section 6(b) will not prohibit Gibson’s work, engagement, or investment in the oil and gas industry (the “Activities”) so long as the Activities do not involve Gibson or entities, persons or groups for whom Gibson works, consults or invests (x) competing with or displacing the specified activities of the Company in those geographic areas or regions enumerated above in Section 6(a), or (y) using the Company’s data or non-public business plans disclosed or known to Gibson during his employment by the Company, in both cases provided that Gibson obtains the prior express written approval of DRI’s Chief Executive Officerof any such work, engagement or investment in such Activities; provided, that, nothing in this Section 6 will prohibit the ownership of less than 10% of the publicly traded capital stock of an entity so long as this is not a controlling interest or mutual fund investment.

If Gibson wishes to pursue Activities prior to the Non-Competition Termination Date, he agrees to present to the Chief Executive Officer of DRI a written request and description of any such proposed Activities,

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which written request and description shall include, among other things and as applicable, (i) the geographical area within which Gibson desires to pursue the Activities, (ii) the terms of any proposed acquisition of properties or leases, and (iii) a complete geological review of the proposal. DRI agrees to respond in writing to Gibson’s request within 10 business days of receipt of such written request and description, at the address provided in Section 11 below, stating DRI’s approval (which can only be provided by DRI’s Chief Executive Officer and which may be granted (if at all) subject to the satisfaction of various conditions) or disapproval of such request and Activities, and the specific reasons for any applicable disapproval (which may include, without limitation, the lack of appropriate information and detail upon which to adequately analyze, assess and/or otherwise approve any such proposal) to the extent DRI can do so without disclosing to Gibson otherwise non-public information.

(c)No Personal Use of CompanyOil and Gas Resources. Gibson covenants and agrees that in conjunction with his continuing employment by the Company or otherwise, he will not utilize Company oil and gas resources, including, but not limited to, maps, seismic information, feasibility studies, personnel, computers, software, books and records, or any other corporate assets, in connection with the Activities for his own account or the account of any entity, persons or groups for whom he works or consults or in which he invests, unless DRI’s Chief Executive Officer provides his prior express written consent.

(d)Cooperation and Assistance.In exchange for the compensation, covenants, and other good and valuable consideration provided by DRI herein, Gibson covenants and agrees that he will, until the Non-Competition Termination Date, (i) provide whatever cooperation and/or assistance is needed for any legal matters, proceedings or issues the Company may face, and (ii) cooperate with, and assist the Company and its employees in effecting, an orderly transition of all functions, duties and responsibilities of Gibson as an officer, director and manager to one or more other employees of the Company, as the Company shall reasonably request. Additionally, Gibson agrees to provide such assistance in a professional manner, and in no event take any action that does, or could reasonably, create a conflict of interest between himself and the Company, or that could subject either him or the Company to civil or criminal liability or is contrary to the policies or procedures of the Company.

(e)Nondisparagement. The parties hereto agree that they will refrain from engaging in any conduct, verbal or otherwise, that would disparage or harm the reputation of the other or, insofar as this Agreement pertains to DRI, its former and present parents, subsidiaries, and/or affiliates, along with its predecessors, successors and/or assigns, if any, as well as their respective former and present directors, officers, managers, general or limited partners, representatives, agents, employees and/or attorneys, if any, jointly and severally (collectively, the “DRI Released Parties”), and Gibson further covenants and agrees that he will not say anything of a disparaging nature about the operations, management, or performance of the DRI Released Parties. Such restricted conduct shall include, but not be limited to, any negative statements made orally or in writing by either of the parties about the other or any of the DRI Released Parties.

Nothing in this Agreement shall prohibit Gibson from providing testimony in response to a valid subpoena, court order, regulatory request or other judicial, administrative or legal process or otherwise as required by law. To the fullest extent permitted by law, Gibson agrees to notify the Company as promptly as practicable after receiving any request for testimony or information in response to a subpoena, court order, regulatory request or other judicial, administrative or legal process or otherwise as required by law.

(f)Confidential Information and Property. Other than the Company-issued laptop computer, iPad and cell-phone which Gibson is currently using and entitled to retain (subject to the Company’s policies and procedures), Gibson covenants and agrees that he has returned, or within three (3) days after the Effective Date will return, to the Company any and all Company property, equipment and other tangible items, including, without limitation, keys, building access cards and corporate credit cards, and any and all originals and/or copies of documents relating to the business of the Company or any of the other DRI Released Parties. Gibson further covenants and agrees that he will not directly or indirectly disclose to anyone, or use for his own benefit or the benefit of anyone other than the Company, any confidential information that he has received through his employment with the Company. “Confidential information” shall include any information that has been disclosed or made available to, or created by, Gibson, and which was at the time of disclosure, availability or creation confidential or proprietary to the Company, and involves or relates to the Company’s current and future

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business plans and strategies, methods of operations or operational techniques, financial, management and/or employee information, information regarding the Company’s practices and processes, or any other non-public information. Gibson further agrees that in the event it appears that he will be compelled by law or judicial process to disclose any such confidential information to avoid potential liability, he will notify the Company in writing immediately upon his receipt of a subpoena or other legal process.

7.Mutually Dependent. The provisions of Section 4 above regarding Gibson’s continued employment related to operational and engineering matters and DRI’s continuing obligations to Gibson which are related thereto, and the covenants and agreements of Gibson set forth in Section 6 above, are mutually dependent, and Gibson understands and agrees that a violation of any of the provisions of Section 6 above will be considered a material breach of this Agreement, and further acknowledges and agrees that irreparable harm to the Company would result from breach by him of any such provisions. Accordingly, notwithstanding any provision of this Agreement to the contrary, Gibson will permanently forfeit any rights to continued employment by the Company as set out under the provisions of Section 4 above, and the Company may immediately terminate such employment, beginning on the date that either (i) Gibson violates any provision of Section 6 above, or (ii) all or any part of, or the application of, Section 6 above is held or found invalid or unenforceable for any reason whatsoever by a court of competent jurisdiction in an action between Gibson and DRI, and on such date any continuing obligations of the Company to Gibson tied to his continued employment shall be extinguished.

8.Release and Waiver by Parties. For and in consideration of the payments provided to be made under the provisions of Section 2 above, and the continued employment of Gibson under the provisions of Section 4 hereof, as well as the covenants and other consideration of DRI contained herein, the receipt and sufficiency of which are hereby acknowledged by Gibson, Gibson, on behalf of himself and his family, assigns, representatives, agents, and/or heirs, if any (collectively with Gibson, the “Gibson Parties”), hereby covenants not to sue and fully, finally and forever releases, acquits and discharges the DRI Released Parties, and/or any one of them, from any and all claims, demands, actions or liabilities of whatever kind or character, whether known or unknown, which the Gibson Parties, or any one of them, has or might claim to have against the DRI Released Parties, and/or any one of them, for any and all injuries, damages (actual or punitive), losses or attorneys’ fees, if any, incurred by any Gibson Party arising out of or in connection with any occurrence which transpired prior to the Effective Date, including, without limitation:

(a)All claims and causes of action arising under contract, tort, statute, or other common law, including, without limitation, breach of contract, fraud, estoppel, misrepresentation, express or implied duties of good faith and fair dealing, wrongful discharge, discrimination, retaliation, harassment, negligence, gross negligence, false imprisonment, assault and battery, conspiracy, intentional or negligent infliction of emotional distress, slander, libel, defamation, refusal to perform an illegal act and invasion of privacy.

(b)All claims and causes of action arising under any federal, state, or local law, regulation, or ordinance, including, without limitation, claims under the AGE DISCRIMINATION IN EMPLOYMENT ACT, as amended, the Civil Rights Act of 1964, as amended, the Civil Rights Act of 1866, the Americans With Disabilities Act, the Fair Labor Standards Act, the Family and Medical Leave Act, the Employee Retirement Income Security Act as amended (except for vested benefits to which he is entitled), the Texas Commission on Human Rights Act, the Texas Labor Code, the Texas Government Code, as well as any claims for compensation of any nature whatsoever, employee benefits, vacation pay (except as otherwise provided by Company policy), expense reimbursement, consulting, equity awards, severance pay, pension or profit sharing benefits, health or welfare benefits, bonus compensation, commissions, deferred compensation or other remuneration, or employment benefits or compensation, except as specifically set forth in Section 2, “Resignation Consideration,” Section 3, “Equity Awards; Cash Awards,” and Section 4, “Continued Employment.”

(c)All claims and causes of action for past or future loss of pay or benefits, expenses, damages for pain and suffering, mental anguish or emotional distress damages, liquidated damages, punitive damages, compensatory damages, injunctive relief, attorneys’ fees, interest, court costs, physical or mental injury, damage to reputation, and any other injury, loss, damage or expense or any other legal or equitable remedy of any kind whatsoever.

(d)All claims and causes of action arising out of or in any way connected with, directly or indirectly, Gibson’s employment with the Company, or any incident thereof, including, without limitation, (i) his treatment

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by the Company, (ii) the terms and conditions of his employment, (iii) the manner or amounts in which Gibson was paid or compensated by the Company, and (iv) the separation of Gibson’s employment.

(e)All claims and causes of action of any kind or character which could have been alleged in any lawsuit or administrative charge, claim or proceeding that could have been filed against the DRI Released Parties (or any one of them) by any Gibson Party on its own behalf or on behalf of any other person.

Nothing in this Agreement will prevent Gibson from filing a charge or complaint with the Equal Employment Opportunity Commission or any other federal or state administrative agency, or participating in any investigation conducted by any federal or state administrative agency; provided, however, that, Gibson agrees that any right to personal legal or equitable relief he may have in connection with such charge, complaint or investigation are hereby barred.

Gibson acknowledges and agrees that the compensation referenced in Section 2 above does not constitute monies to which he would otherwise be entitled as a result of his prior or current employment with the Company, and that these monies constitute fair and adequate compensation for the promises and covenants of Gibson set forth in this Agreement. Gibson agrees and acknowledges that no further amounts are due to him for cash compensation of any nature whatsoever, including salary, severance pay, performance cash or bonuses, or for equity awards, employee benefits, deferred compensation, commissions, vacation pay (except as otherwise provided by Company policy), pension, profit sharing benefits, health or welfare benefits, expense reimbursement, consulting, outplacement services, attorneys’ fees, pay in lieu of notice, or for any other amounts, except as specifically set forth in Section 2, “Resignation Consideration,” Section 3, “Equity Awards; Cash Awards” and Section 4, “Continued Employment.”

DRI also agrees not to sue and fully, finally and forever releases, acquits and discharges Gibson from any and all claims, demands, actions or liabilities of whatever kind or character, whether known or unknown as of the Effective Date, which DRI or anyone acting on its behalf has or might claim to have against Gibson for any and all injuries, damages (actual and punitive), losses, or attorneys’ fees, if any, incurred by DRI. For the avoidance of doubt, and notwithstanding anything to the contrary contained in this Agreement, DRI acknowledges that the Indemnification Agreement dated August 1, 2007 by and between DRI and Gibson shall continue in full force and effect pursuant to the terms set forth, and for all purposes contemplated, therein.

9.Consultation with Attorney and Review Period.

(a)Gibson is advised, and acknowledges that he has been advised, to consult with an attorney prior to executing this Agreement concerning the meaning, import, and legal significance of this Agreement. Gibson acknowledges that he has read this Agreement, as signified by his signature below, and is voluntarily executing the same after, if sought, advice of counsel for the purposes and consideration herein expressed.

(b)Gibson affirms, acknowledges and agrees that (i) he has read and understands the terms of this Agreement, (ii) he is over the age of eighteen (18) years and is otherwise competent to execute this Agreement, (iii) he was given this Agreement on November 16, 2014 (including the disclosure information which is contained in Exhibit A attached to this Agreement and provided pursuant to the Older Workers Benefit Protection Act), and has been given and provided the opportunity to consider and accept this Agreement until 5:00 p.m. (CST) on December 31, 2014 (a period of not less than forty-five (45) days following the date Gibson was provided this Agreement) by signing it and returning it to James S. Matthews, Senior Vice President and General Counsel of DRI, at the address provided in Section 11 below, after which time it would have expired and be void if not received, (iv) any changes to this Agreement from the one that was initially presented on November 16, 2014 as a result of negotiation between him and the Company, whether material or immaterial, did not restart or extend the running of the applicable 45-day period of time in which he had to sign this Agreement, (v) he is entering into this Agreement knowingly and voluntarily and without any undue influence or pressures, and (vi) this Agreement represents and constitutes a full and final resolution of any and all claims, if any, which the Gibson Parties (or any one of them) may have against the DRI Released Parties (or any one of them).

(c)Gibson acknowledges that he shall be entitled to revoke this Agreement at any time prior to the expiration of seven (7) days after the date of execution of this Agreement by Gibson by providing written notice of such revocation to James S. Matthews, Senior Vice President and General Counsel of DRI, at the address provided in Section 11 below.

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10.Governing Law. This Agreement shall be governed by, and construed under, the laws of the State of Texas.

11.Notice. Any notice, payment, demand or communication required or permitted to be given by this Agreement shall be deemed to have been sufficiently given or served for all purposes if delivered personally to and signed for by the party or to any officer of the party to whom the same is directed, or if sent by registered or certified mail, return receipt requested, postage and charges prepaid, addressed to such party at the address set forth below or to such other address as shall have been furnished in writing by such party for whom the communication is intended. Any such notice shall be deemed to be given on the date so delivered.

Denbury Resources Inc.

5320 Legacy Drive

Plano, Texas 75024

Attention: James S. Matthews

SVP and General Counsel

Charles E. Gibson

440 Plumwood Way

Fairview, Texas 75069

12.Severability. In the event that any one or more of the provisions contained in this Agreement is for any reason held to be unenforceable in any respect under the laws of any applicable State or of the United States of America, such unenforceability will not affect any other provision of this Agreement, but with respect only to the jurisdiction holding the provision to be unenforceable, this Agreement will then be construed as if such unenforceable provision or provisions had never been contained herein.

13.Entire Agreement. This Agreement constitutes the sole agreement between the parties and supersedes any and all other agreements, oral or written, relating to the subject matter covered by the Agreement, with the exception of (i) any indemnity agreement which may exist between DRI and Gibson, and which indemnity agreement shall remain in force subject to its terms and independent of this Agreement, and (ii) the terms of DRI’s equity compensation plans and the award agreements made thereunder which are not otherwise specifically addressed in this Agreement.

14.Waiver. Any waiver or breach of any of the terms or conditions of this Agreement shall not operate as a waiver of any other breach of such terms or conditions, or any other terms or conditions, nor shall any failure to enforce any provision hereof operate as a waiver of such provision or any other provision hereof.

15.Assignment. This Agreement is personal to Gibson and the rights and interests of Gibson hereunder may not be sold, transferred, assigned or pledged.

16.Successors. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective heirs, representatives, successors (including specifically any successor to DRI by merger, reorganization or otherwise).

17.Disputes.

(a)If a dispute arises under this Agreement arising out of, related to or in connection with, the payment of amounts provided hereunder to be paid by DRI to Gibson, the timing of such payments or their calculation, or questions regarding the breach of the terms hereof or the issue of arbitrability (a “Dispute”), and the Dispute cannot be settled through direct discussions by the parties within a reasonable amount of time, DRI and Gibson agree that such Disputes shall be referred to and finally resolved by binding arbitration in accordance with the provisions of Exhibit B hereto. DRI and Gibson will split on an equal basis the actual fees and expenses of the arbitrators, and the parties shall bear equally all other expenses of such arbitration, unless the arbitrators determine that a different allocation would be more equitable. The award of the arbitrators will be the exclusive remedy of the parties for such Disputes.

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(b)Jurisdiction and venue of any action relating to this Agreement or Gibson’s employment by the Company (subject to the provisions of Section 17(a) hereof) shall be in the federal or state courts sitting in, or having jurisdiction over, Plano, Collin County, Texas.

18.Consequences of Breach. Without limitation of the terms and provisions of this Agreement, including, without limitation, Section 8 hereof, Gibson (a) agrees that he will indemnify and hold each of the DRI Released Parties harmless from any loss, cost, damage, or expense (including attorneys’ fees, except as prohibited by law) incurred by any of them arising out of Gibson’s breach of any portion of this Agreement, (b) agrees and understands that his entitlement to and retention of the Resignation Benefits that the Company has agreed to provide him herein is expressly conditioned upon Gibson’s ongoing fulfillment of his promises, covenants and obligations herein, and (c) agrees, to the extent permitted by law, to immediately return or repay the amounts he has received from the Company in connection with this Agreement in excess of $500.00 upon a finding or ruling by a court of competent jurisdiction that Gibson breached a provision of this Agreement. In the event DRI concludes or, in good faith, suspects that Gibson has breached this Agreement, no additional payments will be provided under this Agreement unless and until the Company is so ordered to make such payment by a court of competent jurisdiction.

19.Amendments. Any modification of this Agreement or additional obligation assumed by any party in connection with this Agreement shall be binding only if evidenced in writing signed by both parties to this Agreement or an authorized representative of each party. Additionally, this Agreement cannot be changed or terminated orally, but may be changed only through written addendum or amendment executed by both parties.

20.Remedies. In addition to the other remedies provided herein or by applicable law, any breach by Gibson of any of the terms and/or conditions contained in this Agreement shall give the Company the right to discontinue the performance of any unperformed duties and obligations under this Agreement to the extent permitted by applicable law. In the event Gibson breaches any term or condition of this Agreement, any delay by DRI to enforce this Agreement (or any term or condition hereof) shall not be deemed a waiver, acceptance, or acquiescence. Without limitation of any other provision of this Agreement, including, without limitation, Section 14 hereof, no waiver shall bind DRI unless supported by consideration, executed in writing, and delivered to Gibson by an authorized officer of DRI.

21.Counterparts; Signatures. This Agreement may be executed in several counterparts, each of which shall be deemed an original and all of which shall constitute one Agreement; it being understood that the parties need not sign the same counterparts. The exchange of copies of this Agreement and of signature pages by facsimile transmission, by electronic mail in “portable document format” (“.pdf”') form, or by any other electronic means, or by combination of such means, shall constitute effective execution and delivery of this Agreement as to the parties and may be used in lieu of the original Agreement for all purposes. Signatures of the parties transmitted by any means shall be deemed to be their original signatures for all purposes.

[Signature Page to Follow]

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IN WITNESS WHEREOF, the parties hereto affixed their signatures hereunder as of the date set forth below their signature blocks, to be effective as of the Effective Date.

DENBURY RESOURCES INC.
By:	/s/ James S. Matthews
Name:	James S. Matthews
Title:	Senior Vice President and General Counsel
Date:	November 20, 2014

CHARLES E. GIBSON
/s/ Charles E. Gibson
Date:	November 20, 2014

[Signature Page]

EXHIBIT A

The following information is provided in accordance with the Age Discrimination in Employment Act (“ADEA”) and the Older Workers Benefit Protection Act:

1. The class, unit, or group of individuals covered by the program (the “Decisional Unit”) includes certain Senior Vice Presidents and a regional Vice President, each of whom had an office at the Plano, Texas corporate headquarters of Denbury Resources Inc. (the “Company”).

2. The eligibility factors used to select employees for termination within the Decisional Unit include relative functional performance and responsibilities.

3. All employees in the Decisional Unit who are being offered consideration under a waiver agreement and asked to waive claims under the ADEA must sign the agreement and return it to the Company within 45 days after receiving the waiver agreement. Once the signed waiver agreement is returned to the Company, the employee has seven (7) days to revoke the waiver agreement.

4. The following is a listing of the ages and job titles of employees in the Decisional Unit who were and were not selected for termination and offered consideration for signing a waiver:

Job Title	Age	Selected	Not Selected
SVP and Chief Operating Officer	56	X
SVP – Production Operations	56	X
Vice President – East Region	56	X

A-1

EXHIBIT B

DISPUTE RESOLUTION PROCEDURES

1.Applicable Law/Arbitration. Venue for the arbitration provided under Section 17(a) of the Agreement shall be in Plano, Collin County, Texas. Except for the limited rights described in Section 9 below, the parties waive their right to file a lawsuit in a court of law to prosecute any Dispute.

2.Negotiation. When a Dispute has arisen and negotiations have reached an impasse, either party may give the other party written notice of the Dispute. In the event such notice is given, the parties shall attempt to resolve the Dispute promptly by negotiation. Within ten (10) days after delivery of the notice, the receiving party shall submit to the other a written response. Thereafter, the parties shall promptly attempt to resolve the Dispute. All reasonable requests for information made by one party to the other will be honored.

3.Confidentiality of Settlement Negotiations. All negotiations and proceedings pursuant to Section 2 above are confidential and shall be treated as compromise and settlement negotiations for purposes of applicable rules of evidence and any additional confidentiality protections provided by applicable law.

4.Commencement of Arbitration. If the Dispute has not been resolved by negotiation within fifteen (15) days of the disputing party’s notice, or if the parties have failed to confer within fifteen (15) days after delivery of the notice, either party may then initiate arbitration by providing written notice of arbitration to the other party. In order to be valid, the notice shall contain a precise and complete statement of the Dispute. Within fifteen (15) days of receipt of the notice initiating arbitration, the receiving party shall respond by providing a written response which shall include its precise and complete response to the Dispute, and which includes any counter Dispute that the responding party may have.

5.Selection of Arbitrator(s). The arbitration may be conducted and decided by a single person that is mutually agreeable to the parties and knowledgeable and experienced in the type of matter that is the subject of the Dispute if a single arbitrator can be agreed upon by the parties. If the parties cannot agree on a single arbitrator within ten (10) days of the date of the response to the notice of arbitration, then the arbitration shall be determined by a panel of three (3) arbitrators. To select the three arbitrators, each party shall, within ten (10) days of the expiration of the foregoing ten day period, select a person that it believes has the qualifications set forth above as its designated arbitrator, and such arbitrators so designated shall mutually agree upon a similarly qualified third person to complete the arbitration panel and serve as its chairman. In the event that the persons selected by the parties are unable to agree upon a third member of the arbitration panel within ten (10) days after the selection of the latter of the two arbitrators, then he/she shall be selected from the CPR (as defined below) panel using the CPR rules. Once selected, no arbitrator shall have any ex parte communications with either party.

6.Arbitration Process. The arbitration hearing shall commence within a reasonable time after the selection of the arbitrator(s), as set by the arbitrator(s). The arbitrator(s), shall allow the parties to engage in pre-hearing discovery, to include exchanging (i) requests for and production of relevant documents, (ii) up to fifteen (15) interrogatories, (iii) up to fifteen (15) requests for admissions, and producing for deposition and at the arbitration hearing, up to four (4) persons within each parties’ control. Any additional discovery shall only occur by agreement of the parties or as ordered by the arbitrator(s) upon a finding of good cause. The arbitration shall be conducted under the rules of the CPR International Institute for Conflict Prevention & Resolution (“CPR”) in effect on the date of notice of the Dispute for dispute resolution rules for non-administered arbitration of business disputes. The parties may agree on such other rules to govern the arbitration that are not set out in this provision as they may mutually deem necessary.

7.Arbitration Decision. The arbitrator(s) shall have the power to award interim relief, and to grant specific performance. The arbitrator(s) may award interest at the “prime rate” as listed under “Market Data” in the Wall Street Journal on the date of any such award. Except as may be specifically limited elsewhere in this Exhibit B, the arbitrator’s decision may be based on such factors and evidence as the arbitrator(s) deems fit. The arbitrator(s) shall be required to render a written decision to the parties no later than fifteen (15) days after the completion of the hearing.

8.Arbitration Award. The award of a majority of the arbitrator(s) shall be final, conclusive and binding. The award rendered by the arbitrator(s) may be entered in any court having jurisdiction in respect thereof, including any court in which an injunction may have been sought.

B-1

9.Injunctive Relief. With respect to the Dispute, controversy or claim between the parties, nothing in this Exhibit B shall prevent a party from immediately seeking injunctive relief in a court to maintain the status quo during the arbitration.

B-2

EX-21

Exhibit 21

LIST OF SUBSIDIARIES

NAME OF SUBSIDIARY	JURISDICTION OF ORGANIZATION
Denbury Operating Company	Delaware
Denbury Onshore, LLC	Delaware
Denbury Pipeline Holdings, LLC	Delaware
Denbury Holdings, Inc.	Delaware
Denbury Green Pipeline – Texas, LLC	Delaware
Greencore Pipeline Company, LLC	Delaware
Denbury Gulf Coast Pipelines, LLC	Delaware

EX-23.A

Exhibit 23(a)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-01006, 333-27995, 333-55999, 333-70485, 333-39172, 333-39218, 333-39224, 333-63198, 333-90398, 333-106253, 333-116249, 333-143848, 333-160178, 333-167480, 333-175273 and 333-189438) and Form S-3 (No. 333-195305) of Denbury Resources Inc. of our report dated February 27, 2015 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

Dallas, Texas

February 27, 2015

EX-23.B

Exhibit 23(b)

DeGolyer and MacNaughton

5001 Spring Valley Road

Suite 800 East

Dallas, Texas 75244

February 26, 2015

Denbury Resources Inc.

5320 Legacy Drive

Plano, Texas 75024

Ladies and Gentlemen:

We hereby consent to the use of the name DeGolyer and MacNaughton, to references to DeGolyer and MacNaughton, to the inclusion of our Letter Report dated January 27, 2015, regarding the proved reserves of Denbury Resources, and to the inclusion of information taken from our "Appraisal Report as of December 31, 2014 on Certain Properties owned by Denbury Resources Inc. SEC Case", "Appraisal Report as of December 31, 2013 on Certain Properties owned by Denbury Resources Inc. SEC Case", and "Appraisal Report as of December 31, 2012 on Certain Properties owned by Denbury Resources Inc. SEC Case", in the Annual Report on Form 10-K of Denbury Resources Inc. for the year ended December 31, 2014.

Very truly yours,

/s/ DeGolyer and MacNaughton

DeGolyer and MacNaughton

Texas Registered Engineering Firm F-716

EX-31.A

Exhibit 31(a)

CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Phil Rykhoek, certify that:

1. I have reviewed this report on Form 10-K of Denbury Resources Inc. (the registrant);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

February 27, 2015	/s/ Phil Rykhoek
	Phil Rykhoek
	President and Chief Executive Officer

EX-31.B

Exhibit 31(b)

CERTIFICATION UNDER SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark C. Allen, certify that:

1. I have reviewed this report on Form 10-K of Denbury Resources Inc. (the registrant);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

February 27, 2015	/s/ Mark C. Allen
	Mark C. Allen
	Senior Vice President, Chief Financial Officer, Treasurer, and Assistant Secretary

EX-32

Exhibit 32

Certification of Chief Executive Officer and Chief Financial Officer

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the accompanying Annual Report on Form 10-K for the year ended December 31, 2014 (the Report) of Denbury Resources Inc. (Denbury) as filed with the Securities and Exchange Commission, each of the undersigned, in his capacity as an officer of Denbury, hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of

the Sarbanes-Oxley Act of 2002, that to his knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Denbury.

Dated:	February 27, 2015	/s/ Phil Rykhoek
		Phil Rykhoek
		President and Chief Executive Officer
Dated:	February 27, 2015	/s/ Mark C. Allen
		Mark C. Allen
		Senior Vice President, Chief Financial Officer, Treasurer, and Assistant Secretary

EX-99

Exhibit 99

DeGolyer and MacNaughton

5001 Spring Valley Road

Suite 800 East

Dallas, Texas 75244

January 27, 2015

Denbury Resources Inc.

5320 Legacy Drive

Plano, Texas 75024

Ladies and Gentlemen:

Pursuant to your request, we have conducted a reserves evaluation of the net proved crude oil, condensate, natural gas liquids (NGL), and natural gas reserves, as of December 31, 2014, of certain properties that Denbury Resources Inc. (Denbury) has represented that it owns. In addition, we have made estimates of the extent of Denbury's proved carbon dioxide reserves. We have also made estimates of certain proved helium reserves that Denbury has the right to extract and sell for a fee on behalf of the owners of the helium reserves. This evaluation was completed on January 27, 2015. The properties appraised consist of working and royalty interests located in the states of Alabama, Louisiana, Mississippi, Montana, North Dakota, Texas, and Wyoming. Denbury has represented that these properties account for 100 percent of Denbury's net proved reserves as of December 31, 2014. The net proved reserves estimates prepared by us have been prepared in accordance with the reserves definitions of Rules 4-10(a) (1)-(32) of Regulation S-X of the SEC. This report was prepared in accordance with guidelines specified in Item 1202(a)(8) of Regulation S-K and is to be used for inclusion in certain United States Securities and Exchange Commission (SEC) filings by Denbury.

While Rules 4-10(a) (1)-(32) of Regulation S-X of the SEC do not allow reporting of carbon dioxide or helium reserves, at your request we have evaluated the carbon dioxide and helium reserves using the technical and economic criteria of the SEC for petroleum reserves.

Reserves estimates included herein are expressed as net reserves. Gross reserves are defined as the total estimated petroleum to be produced from these properties after December 31, 2014. Net reserves are defined as that portion of the gross reserves attributable to the interests owned by Denbury after deducting all interests owned by others.

Estimates of oil, condensate, NGL, natural gas, carbon dioxide, and helium reserves and future net revenue should be regarded only as estimates that may change as further production history and additional information become available. Not only are such reserves and revenue estimates based on that information which is currently available, but such estimates are also subject to the uncertainties inherent in the application of judgmental factors in interpreting such information.

Data used in this evaluation were obtained from reviews with Denbury personnel, from Denbury files, from records on file with the appropriate regulatory agencies, and from public sources. In the preparation of this report we have relied, without independent verification, upon such information furnished by Denbury with respect to property interests, production from such properties, current costs of operation and development, current prices for production, agreements relating to current and future operations and sale of production, and various other information and data that were accepted as represented. A field examination of the properties was not considered necessary for the purposes of this report.

Methodology and Procedures

Estimates of reserves were prepared by the use of appropriate geologic, petroleum engineering, and evaluation principles and techniques that are in accordance with practices generally recognized by the petroleum industry as presented in the publication of the Society of Petroleum Engineers entitled "Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information (Revision as of February 19, 2007)." The method or combination of methods used in the analysis of each reservoir was tempered by experience with similar reservoirs, stage of development, quality and completeness of basic data, and production history.

- 1 -

When applicable, the volumetric method was used to estimate the original oil in place (OOIP) and the original gas in place (OGIP). Structure and isopach maps were constructed to estimate reservoir volume. Electrical logs, radioactivity logs, core analyses, and other available data were used to prepare these maps as well as to estimate representative values for porosity and water saturation. When adequate data were available and when circumstances justified, material balance and other engineering methods were used to estimate OOIP or OGIP.

Estimates of ultimate recovery were obtained after applying recovery factors to OOIP or OGIP. These recovery factors were based on consideration of the type of energy inherent in the reservoirs, analyses of the petroleum, the structural positions of the properties, and the production histories. When applicable, material balance and other engineering methods were used to estimate recovery factors. An analysis of reservoir performance, including production rate, reservoir pressure, and gas-oil ratio behavior, was used in the estimation of reserves.

For depletion-type reservoirs or those whose performance disclosed a reliable decline in producing-rate trends or other diagnostic characteristics, reserves were estimated by the application of appropriate decline curves or other performance relationships. In the analyses of production-decline curves, reserves were estimated only to the limits of economic production or to the limit of the production licenses as appropriate.

Gas quantities estimated herein are expressed as sales gas. Sales gas is defined as that portion of the total gas to be delivered into a gas pipeline for sale after separation, processing, fuel use, and flare. Gas reserves are expressed at a temperature base of 60 degrees Fahrenheit (°F) and at the legal pressure base of the state in which the interest is located. Condensate reserves estimated herein are those to be recovered by conventional lease separation. NGL reserves are those attributed to the leasehold interests according to processing agreements.

Definition of Reserves

Petroleum reserves estimated by us and included in this report are classified as proved. Only proved reserves have been evaluated for this report. Reserves classifications used by us in this report are in accordance with the reserves definitions of Rules 4-10(a) (1)-(32) of Regulation S-X of the SEC. Reserves are judged to be economically producible in future years from known reservoirs under existing economic and operating conditions and assuming continuation of current regulatory practices using conventional production methods and equipment. In the analyses of production-decline curves, reserves were estimated only to the limit of economic rates of production under existing economic and operating conditions using prices and costs consistent with the effective date of this report, including consideration of changes in existing prices provided only by contractual arrangements but not including escalations based upon future conditions. The petroleum reserves are classified as follows:

Proved oil and gas reserves - Proved oil and gas reserves are those quantities of oil and gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible-from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations-prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for the estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time.

(i) The area of the reservoir considered as proved includes:

(A) The area identified by drilling and limited by fluid contacts, if any, and (B) Adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be continuous with it and to contain economically producible oil or gas on the basis of available geoscience and engineering data.

(ii) In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known hydrocarbons (LKH) as seen in a well penetration unless geoscience, engineering, or performance data and reliable technology establishes a lower contact with reasonable certainty.

(iii) Where direct observation from well penetrations has defined a highest known oil (HKO) elevation and the potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering, or performance data and reliable technology establish the higher contact with reasonable certainty.

- 2 -

(iv) Reserves which can be produced economically through application of improved recovery techniques (including, but not limited to, fluid injection) are included m the proved classification when:

(A) Successful testing by a pilot project in an area of the reservoir with properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir or an analogous reservoir, or other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was based; and (B) The project has been approved for development by all necessary parties and entities, including governmental entities.

(v) Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. The price shall be the average price during the 12-month period prior to the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual arrangements, excluding escalations based upon future conditions.

Developed oil and gas reserves - Developed oil and gas reserves are reserves of any category that can be expected to be recovered:

(i) Through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well; and

(ii) Through installed extraction equipment and infrastructure operational at the time of the reserves estimate if the extraction is by means not involving a well.

Undeveloped oil and gas reserves - Undeveloped oil and gas reserves are reserves of any category that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion.

(i) Reserves on undrilled acreage shall be limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of economic producibility at greater distances.

(ii) Undrilled locations can be classified as having undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances justify a longer time.

(iii) Under no circumstances shall estimates for undeveloped reserves be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir, as defined in [section 210.4-10 (a) Definitions], or by other evidence using reliable technology establishing reasonable certainty.

In this report, estimates of carbon dioxide and helium reserves have been prepared consistent with the evaluation criteria of the SEC for petroleum reserves.

- 3 -

Our estimates of Denbury's net proved reserves attributable to the reviewed properties are based on the definitions of proved reserves of the SEC and are as follows, expressed in thousands of barrels (Mbbl), millions of cubic feet (MMcf), and thousands of barrels of oil equivalent (Mboe):

	Net Proved Reserves as of December 31, 2014
	Total Liquids (Mbbl)	Natural Gas (MMcf)	Oil Equivalent (MBOE)
Proved Developed	269,377	416,421	338,780
Proved Undeveloped	92,958	35,981	98,955
Total Proved	362,335	452,402	437,735

Note: Gas is converted to oil equivalent using an energy equivalent factor of 6,000 cubic feet of gas per 1 barrel of oil equivalent.

In our opinion, the information relating to estimated proved reserves, estimated future net revenue from proved reserves, and present worth of estimated future net revenue from proved reserves of oil, condensate, natural gas liquids, and gas contained in this report has been prepared in accordance with Paragraphs 932-235-50-4, 932-235-50-6, 932-235-50-7, 932-235-50-9, 932-235-50-30, and 932-235-50-31(a), (b), and (e) of the Accounting Standards Update Topic 932-235-50, Extractive Industries – Oil and Gas (Topic 932): Oil and Gas Reserve Estimation and Disclosures (January 2010) of the Financial Accounting Standards Board and Rules 4-10(a) (1)-(32) of Regulation S-X and Rules 302(b), 1201, 1202(a) (1), (2), (3), (4), (8), and 1203(a) of Regulation S-K of the Securities and Exchange Commission; provided, however, that (i) future income tax expenses have not been taken into account in estimating the future net revenue and present worth values set forth herein and (ii) estimates of the proved developed and proved undeveloped reserves are not presented at the beginning of the year.

In addition to the natural gas reserves shown in the foregoing tabulation, Denbury's net proved carbon dioxide gas reserves in Mississippi and Wyoming, as of December 31, 2014, are estimated to be 7,208,885 MMcf. This amount includes 6,694,844 MMcf of developed reserves and 514,041 MMcf of undeveloped reserves. Denbury's proved carbon dioxide gas reserves attributable to its working interest are 7,384,280 MMcf, of which 6,745,008 MMcf are developed. The gross proved carbon dioxide reserves for the appraised properties are 11,258,998 MMcf, of which 10,603,575 MMcf are developed. Net helium reserves, 92-percent developed, are estimated to be 13,231 MMcf. Denbury does not have title to helium, which is produced in conjunction with hydrocarbon and carbon dioxide fields operated by Denbury. While the U.S. Government retains title to the helium, Denbury has the right to extract and sell the helium for a fee. The helium reserves are presented net of the fee remitted to the U.S. Government. The carbon dioxide and helium reserves estimates have been prepared by applying the reserves definitions of Rules 4-10(a) (1)-(32) of Regulation S-X of the SEC as those for natural gas. No revenue estimates have been made for the carbon dioxide and helium reserves.

Primary Economic Assumptions

The following economic assumptions were used for estimating existing and future prices and costs:

Oil and Condensate Prices

Denbury has represented that the oil and condensate prices were based on a 12-month average price (reference price), calculated as the unweighted arithmetic average of the first­ day-of-the-month price for each month within the 12-month period prior to the end of the reporting period, unless prices are defined by contractual arrangements. Denbury supplied differentials by field to a NYMEX reference price of $94.99 per barrel and the prices were held constant thereafter. The volume-weighted average price was $91.89 per barrel.

- 4 -

NGL Prices

Denbury has represented that the NGL prices were based on a 12-month average price (reference price), calculated as the unweighted arithmetic average of the first-day-of-the-month price for each month within the 12-month period prior to the end of the reporting period, unless prices are defined by contractual arrangements. Denbury supplied differentials by field to a reference price of $94.99 per barrel and the prices were held constant thereafter. The volume-weighted average price was $42.21 per barrel.

Natural Gas Prices

Denbury has represented that the natural gas prices were based on a reference price, calculated as the unweighted arithmetic average of the first-day-of-the-month price for each month within the 12-month period prior to the end of the reporting period, unless prices are defined by contractual arrangements. The gas prices were calculated for each property using differentials to the NYMEX reference price of $4.295 per million British thermal units furnished by Denbury and held constant thereafter. The volume-weighted average price was $4.295 per thousand cubic feet.

Operating Expenses and Capital Costs

Operating expenses and capital costs, based on information provided by Denbury, were used in estimating future costs required to operate the properties. In certain cases, future costs, either higher or lower than existing costs, may have been used because of anticipated changes in operating conditions. These costs were not escalated for inflation.

Abandonment costs, net of salvage, were provided by Denbury for all properties.

The estimated future revenue and expenditures attributable to the production and sale of Denbury's net proved reserves of the properties appraised, as of December 31, 2014, is summarized in thousands of dollars (M$) as follows:

	Proved
	Developed Producing	Developed Nonproducing	Undeveloped	Total
Future Gross Revenue, M$	22,042,496	4,203,005	8,515,566	34,761,067
Production & Ad Valorem Taxes, M$	1,834,155	336,115	621,431	2,791,701
Operating Expenses, M$	8,262,299	1,534,479	1,975,303	11,772,081
Capital Costs, M$	263,686	187,478	1,546,582	1,997,746
Abandonment Costs, M$	321,506	475	—	321,981
Future Net Revenue, M$*	11,360,850	2,144,458	4,372,250	17,877,558
Present Worth at 10 Percent, M$*	6,474,443	761,666	1,511,961	8,748,069

* Future income tax expenses were not taken into account in the preparation of these estimates.

Estimates of crude oil, condensate, natural gas liquids, and natural gas reserves and future net revenue should be regarded only as estimates that may change as further production history and additional information become available. Not only are such reserves and revenue estimates based on that information which is currently available, but such estimates are also subject to the uncertainties inherent in the application of judgmental factors.

While the oil and gas industry may be subject to regulatory changes from time to time that could affect an industry participant's ability to recover its oil and gas reserves, we are not aware of any such governmental actions which would restrict the recovery of the December 31, 2014, estimated oil and gas reserves.

To the extent the above-enumerated rules, regulations, and statements require determinations of an accounting or legal nature, we, as engineers, are necessarily unable to express an opinion as to whether the above-described information is in accordance therewith or sufficient therefor.

- 5 -

DeGolyer and MacNaughton is an independent petroleum engineering consulting firm that has been providing petroleum consulting services throughout the world since 1936. DeGolyer and MacNaughton does not have any financial interest, including stock ownership, in Denbury. Our fees were not contingent on the results of our evaluation. This letter report has been prepared at the request of Denbury. DeGolyer and MacNaughton has used all assumptions, data, procedures,and methods that it considers necessary and appropriate to prepare this report.

Submitted,

/s/ DeGolyer and MacNaughton

DeGolyer and MacNaughton

Texas Registered Engineering Firm F-716

/s/ Paul J. Szatkowski, P.E.

Paul J. Szatkowski, P.E.

Senior Vice President

DeGolyer and MacNaughton

- 6 -

CERTIFICATE of QUALIFICATION

I, Paul J. Szatkowski, Petroleum Engineer with DeGolyer and MacNaughton,5001 Spring Valley Road, Suite 800 East, Dallas, Texas, 75244 U.S.A., hereby certify:

1. That I am a Senior Vice President with DeGolyer and MacNaughton, which company did prepare the letter report addressed to Denbury dated January 27, 2015, and that I, as Senior Vice President, was responsible for the preparation of this letter report.

2. That I attended Texas A&M University, and that I graduated with a Bachelor of Science degree in Petroleum Engineering in 1974; that I am a Registered Professional Engineer in the State of Texas; that I am a member of the International Society of Petroleum Engineers and the American Association of Petroleum Geologists; and that I have in excess of 40 years of experience in oil and gas reservoir studies and reserves evaluations.

/s/ Paul J. Szatkowski, P.E.

Paul J. Szatkowski, P.E.

Senior Vice President

DeGolyer and MacNaughton

- 7 -

XML

Significant Accounting Policies (Intangibles) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible asset value	$ 89,607	$ 89,197
Accumulated amortization	(3,640)	(1,319)
Net book value	85,967	87,878
Helium Production Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset value	55,266	55,266
Accumulated amortization	(15)	0
Net book value	55,251	55,266
CO2 Purchase Contract [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset value	34,341	33,931
Accumulated amortization	(3,625)	(1,319)
Net book value	$ 30,716	$ 32,612

XML

Long-Term Debt (Details Textuals) (USD $)	3 Months Ended	12 Months Ended			0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Feb. 28, 2011	Apr. 30, 2014	Feb. 28, 2013	May 30, 2014
Debt Instruments [Abstract]
Loss on early extinguishment of debt	$ 113,900,000	$ 113,908,000	$ 44,651,000	$ 0
Interest in guarantor subsidiaries		100.00%			100.00%
Lease period included in long term transportation service agreement		20 years
Unamortized debt issuance costs		57,300,000	58,900,000		57,300,000
Bank Credit Agreement [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Line of Credit, Borrowing Base		3,000,000,000.0			3,000,000,000.0
Line of Credit Facility, Current Borrowing Capacity		1,600,000,000.0			1,600,000,000.0
Bank Credit Agreement restriction, limitation on sale of borrowing base properties		10.00%			10.00%
Total Debt to EBITDAX Requirement		4.25
Current Ratio Requirement		1.0
Minimum Bank Credit Facility Availability Percentage To Pay Distributions		10.00%
Line of Credit Facility, Interest Rate During Period					1.90%
Bank Credit Agreement [Member] | Letter of Credit [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Line of Credit Facility, Capacity Available for Specific Purpose		50,000,000			50,000,000
Bank Credit Agreement [Member] | Swingline Loan [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Line of Credit Facility, Capacity Available for Specific Purpose		25,000,000			25,000,000
9 1/2% Senior Subordinated Notes due 2016 [Member]
Debt Instruments [Abstract]
Debt Instrument, Repurchased Face Amount			224,900,000
9 3/4% Senior Subordinated Notes due 2016 [Member]
Debt Instruments [Abstract]
Debt Instrument, Repurchased Face Amount			426,400,000
8 1/4% Senior Subordinated Notes due 2020 [Member]
Debt Instruments [Abstract]
Interest rate on senior subordinated notes		8.25%			8.25%
Debt Instrument, Repurchased Face Amount							815,200,000		181,100,000
Debt Instrument Redemption Price Percentage Exclusive of Make Whole Premium									100.00%
6 3/8% Senior Subordinated Notes due 2021 [Member]
Debt Instruments [Abstract]
Face value of senior subordinated notes						400,000,000
Interest rate on senior subordinated notes		6.375%			6.375%
Selling Price Of Debt Instrument						100.00%
6 3/8% Senior Subordinated Notes due 2021 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		103.188%
6 3/8% Senior Subordinated Notes due 2021 [Member] | Initial Redemption Period with Make-Whole Premium [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		100.00%
Debt Instrument, Percentage of Principal Amount Available To Be Redeemed		100.00%
5 1/2% Senior Subordinated Notes Due 2022 [Member]
Debt Instruments [Abstract]
Face value of senior subordinated notes							1,250,000,000.00
Interest rate on senior subordinated notes		5.50%			5.50%
Proceeds from issuance of subordinated long-term debt, net of commissions and fees							1,230,000,000
Selling Price Of Debt Instrument							100.00%
Total Debt to EBITDA Requirement		2.5
5 1/2% Senior Subordinated Notes Due 2022 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		104.125%
5 1/2% Senior Subordinated Notes Due 2022 [Member] | Initial Redemption Period with Proceeds from Equity Offering [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		105.50%
Debt Instrument, Percentage of Principal Amount Available To Be Redeemed		35.00%
5 1/2% Senior Subordinated Notes Due 2022 [Member] | Initial Redemption Period with Make-Whole Premium [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		100.00%
Debt Instrument, Percentage of Principal Amount Available To Be Redeemed		100.00%
4 5/8% Senior Subordinated Notes due 2023 [Member]
Debt Instruments [Abstract]
Face value of senior subordinated notes								1,200,000,000.0
Interest rate on senior subordinated notes		4.625%			4.625%
Proceeds from issuance of subordinated long-term debt, net of commissions and fees								$ 1,180,000,000
Selling Price Of Debt Instrument								100.00%
Total Debt to EBITDA Requirement		2.5
4 5/8% Senior Subordinated Notes due 2023 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		102.313%
4 5/8% Senior Subordinated Notes due 2023 [Member] | Initial Redemption Period with Proceeds from Equity Offering [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		104.625%
Debt Instrument, Percentage of Principal Amount Available To Be Redeemed		35.00%
4 5/8% Senior Subordinated Notes due 2023 [Member] | Initial Redemption Period with Make-Whole Premium [Member]
Debt Instruments [Abstract]
Debt Instrument, Redemption Price, Percentage		100.00%
Debt Instrument, Percentage of Principal Amount Available To Be Redeemed		100.00%
Minimum [Member] | Bank Credit Agreement [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.30%
Maximum [Member] | Bank Credit Agreement [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.375%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Bank Credit Agreement [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Interest rate margins on Bank Credit Agreement		1.25%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Bank Credit Agreement [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Interest rate margins on Bank Credit Agreement		2.25%
Base Rate [Member] | Minimum [Member] | Bank Credit Agreement [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Interest rate margins on Bank Credit Agreement		0.25%
Base Rate [Member] | Maximum [Member] | Bank Credit Agreement [Member]
$1.6 Billion Revolving Credit Agreement [Abstract]
Interest rate margins on Bank Credit Agreement		1.25%

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Asset Retirement Obligations Asset Retirement Obligations (Details Textuals) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]
Balance in escrow accounts	$ 37.1	$ 36.0

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Stock Compensation Plans (Summary of Encore Restricted Stock) (Details 9) (Encore Plan [Member], Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2014
Encore Plan [Member] | Restricted Stock [Member]
Nonvested Resticted Stock Outstanding [Line Items]
Nonvested at December 31, 2013	21,741
Weighted average grant-date fair value, December 31, 2013	$ 15.43
Vested	(21,078)
Weighted Average Grant-Date Fair Value, vested	$ 15.43
Forfeited	(663)
Weighted average grant-date fair value, forfeited	$ 15.43
Nonvested at December 31, 2014	0
Weighted average grant-date fair value, December 31, 2014	$ 0.00

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Income Taxes (Income Tax Provision (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current income tax expense (benefit)
Federal	$ (42,500)	$ 393	$ 57,720
State	(407)	9,864	18,034
Total current income tax expense (benefit)	(42,907)	10,257	75,754
Deferred income tax expense (benefit)
Federal	400,544	222,559	239,862
State	29,429	(33)	15,881
Total deferred income tax expense	429,973	222,526	255,743
Total income tax expense	$ 387,066	$ 232,783	$ 331,497

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Fair Value Measurements (Level 3 Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair value of Level 3 instruments, beginning of year	$ 6,709	$ 0
Fair value adjustments on commodity derivatives	181,737	6,709
Fair value of Level 3 instruments, end of year	188,446	6,709
The amount of total gains for the period included in earnings attributable to the change in unrealized gains relating to assets still held at the reporting date	$ 181,737	$ 6,709

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Acquisitions and Divestitures (Details Textuals) (USD $)	0 Months Ended		9 Months Ended
	Mar. 27, 2013		Dec. 31, 2013
Business Combinations [Abstract]
Payments to Acquire Businesses, Gross	$ 1,001,707,000	[1]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			268,300,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			$ 194,200,000

[1] See Note 6, Income Taxes, for additional information regarding the like-kind-exchange transaction utilized to fund this purchase and Note 13, Supplemental Cash Flow Information, for supplemental cash flow information regarding the cash payment.

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Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2014

Stock Compensation Plans [Line Items]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Stock-based compensation costs for the years ended December 31, 2014, 2013 and 2012, are as follows:

	Year Ended December 31,
In thousands	2014		2013		2012
Stock-based compensation expensed
General and administrative expenses	$	27,789	$	30,429	$	26,463
Lease operating expenses	2,724		2,574		2,847
Total stock-based compensation expensed	30,513		33,003		29,310
Stock-based compensation capitalized	9,019		9,088		8,587
Total cost of stock-based compensation arrangements	$	39,532	$	42,091	$	37,897
Income tax benefit recognized for stock-based compensation arrangements	$	11,595	$	12,541	$	11,284

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

	Year Ended December 31,
	2014			2013			2012
Weighted average fair value of SARs granted	$	3.55		$	6.72		$	8.90
Risk-free interest rate	1.31		%	0.67		%	0.79		%
Expected life	3.8 to 4.0 years			3.6 to 4.8 years			4.0 to 5.0 years
Expected volatility	38.0		%	50.4		%	64.9		%
Dividend yield	3.10		%	—		%	—		%

Summary of stock option and SARs activity

The following is a summary of our stock option and SAR activity:

	Number of Awards		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2013	8,986,915		$	16.00
Granted	555,786		14.60
Exercised	(1,612,822	)	10.23
Forfeited	(136,493	)	17.03
Expired	(324,653	)	21.02
Outstanding at December 31, 2014	7,468,733		16.90		2.8	$	178
Exercisable at end of period	5,846,933		$	17.05	2.2	$	74

Disclosure of intrinsic value of stock options exercised and grant-date fair value of awards vested

The following is a summary of the total intrinsic value of stock options and SARs exercised and grant-date fair value of stock options and SARs vested:

	Year Ended December 31,
In thousands	2014		2013		2012
Intrinsic value of stock options and SARs exercised	$	7,985	$	17,287	$	17,315
Grant-date fair value of stock options and SARs vested	9,998		12,852		26,391

Schedule of Cash Proceeds Received from Share-based Payment Awards

The following is a summary of cash received from stock option exercises under share-based payment arrangements and tax benefits realized from the exercises of stock options and SARs:

	Year Ended December 31,
In thousands	2014		2013		2012
Cash received from stock option exercises	$	7,022	$	5,487	$	6,022
Tax benefit realized for the exercises of stock options and SARs	212		437		458

Performance equity awards [Member]

Stock Compensation Plans [Line Items]

Schedule of Nonvested Performance-based Units Activity

A summary of the status of the nonvested performance-based equity awards (presented at the target level) during the year ended December 31, 2014, is as follows:

	Performance-Based Operational Awards				Performance-Based TSR Awards
	Number of Awards		Weighted Average Grant-Date Fair Value		Number of Awards		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	209,474		$	16.77	296,391		$	21.43
Granted	275,870		16.55		275,870		19.81
Forfeited	(33,946	)	16.64		(38,650	)	20.50
Nonvested at December 31, 2014	451,398		16.65		533,611		20.66

Performance-based TSR Awards [Member]

Stock Compensation Plans [Line Items]

Summary of Share-Based Award Valuation Assumptions

The range of assumptions used in the Monte Carlo simulation valuation approach for Performance-Based TSR Awards (presented at the target level) are as follows:

	Year Ended December 31,
	2014			2013			2012
Weighted average fair value of Performance-Based TSR Awards granted	$	19.81		$	20.08		$	24.68
Risk-free interest rate	0.80		%	0.41		%	0.42		%
Expected life	3.0 years			3.0 years			2.8 years
Expected volatility	39.4		%	42.3		%	45.2		%
Dividend yield	2.50		%	—		%	—		%

Performance-based Operational Award [Member]

Stock Compensation Plans [Line Items]

Summary of Vesting Date Fair Value Of Awards

The following is a summary of the total vesting date fair value of performance-based equity awards:

	Year Ended December 31,
In thousands	2014		2013		2012
Vesting date fair value of Performance-Based Operational Awards	$	—	$	2,541	$	2,191

2004 Omnibus Stock and Incentive Plan | Restricted Stock [Member]

Stock Compensation Plans [Line Items]

Summary of Vesting Date Fair Value Of Awards

The following is a summary of the total vesting date fair value of non-performance-based restricted stock under the 2004 Plan:

	Year Ended December 31,
In thousands	2014		2013		2012
Fair value of restricted stock vested	$	24,780	$	21,529	$	22,332

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of the status of our nonvested non-performance-based restricted stock grants issued under our 2004 Plan and the changes during the year ended December 31, 2014, is presented below:

	Number of Shares		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	3,761,084		$	15.98
Granted	2,001,148		16.34
Vested	(1,512,407	)	16.91
Forfeited	(510,791	)	13.27
Nonvested at December 31, 2014	3,739,034		16.17

Encore Plan [Member] | Restricted Stock [Member]

Stock Compensation Plans [Line Items]

Summary of Vesting Date Fair Value Of Awards

The following is a summary of the total vesting date fair value of restricted stock under the Encore Plan:

	Year Ended December 31,
In thousands	2014		2013		2012
Fair value of restricted stock vested	$	340	$	512	$	584

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of the status of the vested restricted stock grants under the Encore Plan and the changes during the year ended December 31, 2014, is presented below:

	Number of Shares		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	21,741		$	15.43
Vested	(21,078	)	15.43
Forfeited	(663	)	15.43
Nonvested at December 31, 2014	—		—

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Fair Value Measurements (Level 3 Valuation Techniques) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	188,446	$ 6,709	$ 0
Income Approach Valuation Technique [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	188,446
Income Approach Valuation Technique [Member] | Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Expected Volatility Rate	29.30%
Income Approach Valuation Technique [Member] | Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Expected Volatility Rate	44.20%

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Stock Compensation Plans (Summary of Vesting Date Fair Value of Awards) (Details 12) (Performance-based Operational Award [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Performance-based Operational Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting date fair value of Performance-Based Operational Awards	$ 0	$ 2,541	$ 2,191

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Additional Balance Sheet Details (Detail Textuals) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Allowance for doubtful accounts	$ 0.4	$ 0.3

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Income Taxes (Schedule of Effective Tax Rate Reconciliation) (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax provision calculated using the federal statutory income tax rate	$ 357,895	$ 224,833	$ 299,900
State income taxes, net of federal income tax benefit	25,368	13,518	30,955
Effect of statutory rate change	4,225	(4,178)	(429)
Other	(422)	(1,390)	1,071
Total income tax expense	$ 387,066	$ 232,783	$ 331,497

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Commodity Derivative Contracts (Details Textuals)	12 Months Ended
	Dec. 31, 2014
Minimum [Member]
Derivative [Line Items]
Derivative, Average Remaining Maturity	18 months
Maximum [Member]
Derivative [Line Items]
Derivative, Average Remaining Maturity	2 years

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Commitments and Contingencies (Delhi Field Release) (Details Textuals 3) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended		19 Months Ended
	Oct. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014
Loss Contingencies [Line Items]
Environmental remediation expense		$ 16.8	$ 114.0	$ 130.8
Environmental remediation expense incurred to date				112.6
Gross proceeds from insurance settlement, operating activities	25.0
Net proceeds from insurance settlement, operating activities	$ 23.9
Insurance reimbursement as a percentage of total cost estimate				20.00%
Maximum [Member]
Loss Contingencies [Line Items]
Estimated percentage of environmental remediation expense estimate to be recovered through insurance proceeds		66.66667%		66.66667%
Minimum [Member]
Loss Contingencies [Line Items]
Estimated percentage of environmental remediation expense estimate to be recovered through insurance proceeds		33.33333%		33.33333%

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Commitments and Contingencies (Summary of Operating Lease Payments Paid and Received (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Operating lease payments	$ 43,333	$ 37,211	$ 33,606
Sublease rental receipts	$ 2,347	$ 2,237	$ 2,685

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Additional Balance Sheet Details (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Commodity derivatives settlement receivables	$ 59,755	$ 0
Trade accounts receivable, net	45,407	53,737
Federal income tax receivable, net	37,652	0
Other receivables	14,141	24,558
Total	$ 156,955	$ 78,295

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Fair Value Measurements (Fair Value Hierarchy) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Current	$ 440,359	$ 5
Derivative Asset, Noncurrent	66,187	9,942
Total Assets	506,546	9,947
Derivative Liability, Current		(53,822)
Derivative Liability, Noncurrent		(3,413)
Total Liabilities		(57,235)
Quoted Prices in Active Markets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Current	0	0
Derivative Asset, Noncurrent	0	0
Total Assets	0	0
Derivative Liability, Current		0
Derivative Liability, Noncurrent		0
Total Liabilities		0
Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Current	283,238	5
Derivative Asset, Noncurrent	34,862	3,034
Total Assets	318,100	3,039
Derivative Liability, Current		(53,822)
Derivative Liability, Noncurrent		(3,214)
Total Liabilities		(57,036)
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Current	157,121	0
Derivative Asset, Noncurrent	31,325	6,908
Total Assets	188,446	6,908
Derivative Liability, Current		0
Derivative Liability, Noncurrent		(199)
Total Liabilities		$ (199)

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Stock Compensation Plans (TSR Award Assumptions) (Details 10) (Performance-based TSR Awards [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Performance-based TSR Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of Performance-Based TSR Award granted	$ 19.81	$ 20.08	$ 24.68
Risk-free interest rate	0.80%	0.41%	0.42%
Expected life	3 years	3 years	2 years 9 months
Expected volatility	39.40%	42.30%	45.20%
Dividend yield	2.50%	0.00%	0.00%

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Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Organization and Nature of Operations

Organization and Nature of Operations

Denbury Resources Inc., a Delaware corporation, is an independent oil and natural gas company with operations focused in two key operating areas: the Gulf Coast and Rocky Mountain regions. Our goal is to increase the value of our properties through a combination of exploitation, drilling and proven engineering extraction practices, with the most significant emphasis relating to CO₂ enhanced oil recovery operations.

Principles of Reporting and Consolidation

Principles of Reporting and Consolidation

The consolidated financial statements herein have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and include the accounts of Denbury and entities in which we hold a controlling financial interest.  Undivided interests in oil and gas joint ventures are consolidated on a proportionate basis.  All intercompany balances and transactions have been eliminated.

Use Of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amount of certain assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during each reporting period.  Management believes its estimates and assumptions are reasonable; however, such estimates and assumptions are subject to a number of risks and uncertainties that may cause actual results to differ materially from such estimates.  Significant estimates underlying these financial statements include (1) the fair value of financial derivative instruments; (2) the estimated quantities of proved oil and natural gas reserves used to compute depletion of oil and natural gas properties, the related present value of estimated future net cash flows therefrom and the ceiling test; (3) future net cash flow estimates used in the impairment assessment of goodwill and long-lived assets; (4) the estimated quantities of proved and probable CO₂ reserves used to compute depletion of CO₂ properties; (5) accruals related to oil and natural gas sales volumes and revenues, capital expenditures and lease operating expenses; (6) the estimated costs and timing of future asset retirement obligations; (7) estimates made in the calculation of income taxes; and (8) estimates made in determining the fair values for purchase price allocations, including goodwill.  While management is not aware of any significant revisions to any of its estimates, there will likely be future revisions to its estimates resulting from matters such as revisions in estimated oil and natural gas volumes, changes in ownership interests, payouts, joint venture audits, re-allocations by purchasers or pipelines, or other corrections and adjustments common in the oil and natural gas industry, many of which require retroactive application.  These types of adjustments cannot be currently estimated and will be recorded in the period in which the adjustment occurs.

Cash Equivalents

Cash Equivalents

We consider all highly liquid investments to be cash equivalents if they have maturities of three months or less at the date of purchase.

Oil and Natural Gas Properties

Oil and Natural Gas Properties

Capitalized Costs.  We follow the full cost method of accounting for oil and natural gas properties.  Under this method, all costs related to the acquisition, exploration and development of oil and natural gas reserves are capitalized and accumulated in a single cost center representing our activities, which are undertaken exclusively in the United States.  Such costs include lease acquisition costs, geological and geophysical expenditures, lease rentals on undeveloped properties, costs of drilling both productive and nonproductive wells, capitalized interest on qualifying projects, and general and administrative expenses directly related to exploration and development activities, and do not include any costs related to production, general corporate overhead or similar activities.  We assign the purchase price of oil and natural gas properties we acquire to proved and unevaluated properties based on the estimated fair values as defined in the Financial Accounting Standards Board Codification ("FASC") Fair Value Measurement topic.  Proceeds received from disposals are credited against accumulated costs except when the sale represents a significant disposal of reserves, in which case a gain or loss would be recognized. A disposal of 25% or more of our proved reserves would be considered significant.

Depletion and Depreciation.  The costs capitalized, including production equipment and future development costs, are depleted or depreciated using the unit-of-production method, based on proved oil and natural gas reserves as determined by independent petroleum engineers.  Oil and natural gas reserves are converted to equivalent units on a basis of 6,000 cubic feet of natural gas to one barrel of crude oil.

Under full cost accounting, we may exclude certain unevaluated costs from the amortization base pending determination of whether proved reserves can be assigned to such properties.  The costs classified as unevaluated are transferred to the full cost amortization base as the properties are developed, tested and evaluated.

Ceiling Test. The net capitalized costs of oil and natural gas properties are limited to the lower of unamortized cost or the cost center ceiling.  The cost center ceiling is defined as (1) the present value of estimated future net revenues from proved oil and natural gas reserves before future abandonment costs (discounted at 10%), based on the average first-day-of-the-month oil and natural gas price for each month during a 12-month rolling period prior to the end of a particular reporting period; plus (2) the cost of properties not being amortized; plus (3) the lower of cost or estimated fair value of unproved properties included in the costs being amortized, if any; less (4) related income tax effects.  Our future net revenues from proved oil and natural gas reserves are not reduced for development costs related to the cost of drilling for and developing CO₂ reserves nor those related to the cost of constructing CO₂ pipelines, as those costs have previously been incurred by the Company.  Therefore, we include in the ceiling test, as a reduction of future net revenues, that portion of our capitalized CO₂ costs related to CO₂ reserves and CO₂ pipelines that we estimate will be consumed in the process of producing our proved oil and natural gas reserves.  The fair value of our oil and natural gas derivative contracts is not included in the ceiling test, as we do not designate these contracts as hedge instruments for accounting purposes.  The cost center ceiling test is prepared quarterly.  We did not have a ceiling test write-down during the years ended December 31, 2014, 2013 or 2012. If oil and natural gas prices were to remain at or near late 2014 and early 2015 levels in subsequent periods, which are significantly lower than our 2014 average first-day-of-the-month oil and natural gas prices, we would likely begin recording write-downs due to the full cost ceiling test in the first or second quarter of 2015, and also in subsequent quarterly periods if prices remain low.

Joint Interest Operations.  Substantially all of our oil and natural gas exploration and production activities are conducted jointly with others.  These financial statements reflect only our proportionate interest in such activities, and any amounts due from other partners are included in trade receivables.

Tertiary Injection Costs.  Our tertiary operations are conducted in reservoirs that have already produced significant amounts of oil over many years; however, in accordance with the SEC rules and regulations for recording proved reserves, we cannot recognize proved reserves associated with enhanced recovery techniques, such as CO₂ injection, until we can demonstrate production resulting from the tertiary process or unless the field is analogous to an existing flood.  

We capitalize, as a development cost, injection costs in fields that are in their development stage, which means we have not yet seen incremental oil production due to the CO₂ injections (i.e., a production response).  These capitalized development costs are included in our unevaluated property costs if there are not already proved tertiary reserves in that field.  After we see a production response to the CO₂ injections (i.e., the production stage), injection costs are expensed as incurred, and once proved reserves are recognized, previously deferred unevaluated development costs become subject to depletion.

Property, Plant, and Equipment Policy

CO₂ Properties

We own and produce CO₂ reserves, a non-hydrocarbon resource, that are used in our tertiary oil recovery operations on our own behalf and on behalf of other interest owners in enhanced recovery fields, with a portion sold to third-party industrial users.  We record revenue from our sales of CO₂ to third parties when it is produced and sold.  Expenses related to the production of CO₂ are allocated between volumes sold to third parties and volumes consumed internally that are directly related to our tertiary production.  The expenses related to third-party sales are recorded in "CO₂ and helium discovery and operating expenses," and the expenses related to internal use are recorded in "Lease operating expenses" in the Consolidated Statements of Operations or are capitalized as oil and gas properties in our Consolidated Balance Sheets, depending on the stage of the tertiary flood that is receiving the CO₂ (see Tertiary Injection Costs above for further discussion).

Costs incurred to search for CO₂ are expensed as incurred until proved or probable reserves are established.  Once proved or probable reserves are established, costs incurred to obtain those reserves are capitalized and classified as "CO₂ properties" on our Consolidated Balance Sheets.  Capitalized CO₂ costs are aggregated by geologic formation and depleted on a unit-of-production basis over proved and probable reserves.

We own certain interests in the Riley Ridge Federal Unit in Wyoming ("Riley Ridge"), which contains helium and CO₂ reserves (non-hydrocarbon resources) as well as natural gas reserves (a hydrocarbon resource).  It is not possible to separately identify the capitalized costs related to the development of each product in the commingled gas stream; thus, these costs are allocated to each product based on the relative future revenue value of each product line and classified accordingly on the Consolidated Balance Sheets.

Pipelines and Plants

CO₂ used in our tertiary floods is transported to our fields through CO₂ pipelines.  Costs of CO₂ pipelines under construction are not depreciated until the pipelines are placed into service.  Pipelines are depreciated on a straight-line basis over their estimated useful lives, which range from 15 to 50 years.

Pipelines and plants include the Riley Ridge gas processing facility in southwestern Wyoming. Individual components of the Riley Ridge gas processing facility are depreciated on a straight-line basis over their estimated useful lives, which range from 20 to 50 years.

Property and Equipment – Other

Other property and equipment, which includes furniture and fixtures, vehicles, computer equipment and software, and capitalized leases, is depreciated principally on a straight-line basis over each asset's estimated useful life.  Vehicles and furniture and fixtures are generally depreciated over a useful life of five to ten years, and computer equipment and software are generally depreciated over a useful life of three to five years.  Leasehold improvements are amortized over the shorter of the estimated useful life or the remaining lease term.

Leased property meeting certain capital lease criteria is capitalized, and the present value of the related lease payments is recorded as a liability.  Amortization of capitalized leased assets is computed using the straight-line method over the shorter of the estimated useful life or the initial lease term.

Maintenance and repair costs that do not extend the useful life of the property or equipment are charged to expense as incurred.

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in the acquisition of a business. Goodwill is not amortized; rather, it is tested for impairment annually during the fourth quarter and when events or changes in circumstances indicate that it is more likely than not the fair value of a reporting unit with goodwill has been reduced below its carrying value. The impairment test requires allocating goodwill and other assets and liabilities to reporting units.  However, we have only one reporting unit.  To assess impairment, we have the option to qualitatively assess if it is more likely than not that the fair value of the reporting unit is less than the carrying value.  Absent a qualitative assessment, or, through the qualitative assessment, if we determine it is more likely than not that the fair value of the reporting unit is less than the carrying value, a quantitative assessment is prepared to calculate the fair market value of the reporting unit.  If it is determined that the fair value of the reporting unit is less than the carrying value, the recorded goodwill is impaired to its implied fair value with a charge to operating expense.  We performed our goodwill impairment assessment as of December 31, 2014. Because our enterprise value (combined market capitalization plus a control premium of 10% and the fair value of our long-term debt) was below the book value of our stockholders' equity and long-term debt as of December 31, 2014, we were required to proceed to step two of the goodwill impairment test.

In the step two quantitative assessment, we assigned the fair value of the reporting unit (enterprise value) to its assets and liabilities and calculated the implied fair value of goodwill as the excess of fair value of the reporting unit over the amounts assigned to the assets and liabilities. Oil and natural gas reserves, which represent the most significant assets requiring valuation, were estimated using the expected present value of future net cash flows method based on December 31, 2014, NYMEX oil and natural gas futures prices for the next five years, adjusted for current price differentials. In addition to future oil and natural gas pricing, the most significant assumptions impacting the projections of future net cash flows include projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs, projected availability and cost of CO₂, risk adjustment factors applied to probable and possible oil and natural gas reserve cash flows, projected recovery factors of oil and natural gas reserves, and a weighted-average cost of capital discount rate applied to all cash flows. The implied fair value of goodwill calculated in this quantitative assessment significantly exceeded the corresponding book value of goodwill. Therefore, we did not record any goodwill impairment during 2014, nor have we recorded a goodwill impairment historically.

Our intangible assets subject to amortization primarily consist of amounts assigned in purchase accounting to helium production rights at Riley Ridge and a CO₂ purchase contract with ConocoPhillips to offtake CO₂ from the Lost Cabin gas plant in Wyoming and are included in our Consolidated Balance Sheets under the caption "Other assets." We amortize our helium production rights on a unit-of-production basis over the life of the estimated helium reserves and amortize the CO₂ contract intangible asset on a straight-line basis over the contract term. Total amortization expense related to these assets was $2.3 million and $1.3 million during the years ended December 31, 2014 and 2013, respectively. The following table summarizes the carrying values of our intangible assets as of December 31, 2014 and 2013:

In thousands	Helium Production Rights			CO2 Purchase Contract			Total
December 31, 2014
Intangible asset value	$	55,266		$	34,341		$	89,607
Accumulated amortization	(15		)	(3,625		)	(3,640		)
Net book value as of December 31, 2014	$	55,251		$	30,716		$	85,967
December 31, 2013
Intangible asset value	$	55,266		$	33,931		$	89,197
Accumulated amortization	—			(1,319		)	(1,319		)
Net book value as of December 31, 2013	$	55,266		$	32,612		$	87,878

At December 31, 2014, our estimated amortization expense for our intangible assets subject to amortization over the next five years is as follows:

In thousands
2015	$	2,289
2016	2,488
2017	2,788
2018	2,858
2019	2,833

Impairment or Disposal of Long-Lived Assets, Policy

Impairment Assessment of Long-Lived Assets

The portion of our capitalized CO₂ costs related to CO₂ reserves, CO₂ pipelines, and the Riley Ridge gas processing facility that we estimate will be consumed in the process of producing our proved oil and natural gas reserves is included in the full cost pool ceiling test as a reduction to future net revenues.  The remaining net capitalized costs that are not included in the full cost pool ceiling test, and related intangible assets, are subject to long-lived asset impairment testing whenever events or changes in circumstances indicate that the carrying value may not be recoverable.

We perform our long-lived asset impairment test by comparing the net carrying costs of our two long-lived asset groups ((1) Gulf Coast region and (2) Rocky Mountain region) to the respective expected future undiscounted net cash flows that are supported by these long-lived assets which include (1) the production of our probable and possible oil and natural gas reserves and (2) the sale of non-hydrocarbons (CO₂ and helium) to third parties. If the undiscounted net cash flows are below the net carrying costs for an asset group, we must record an impairment loss by the amount, if any, that net carrying costs exceed the fair value of the long-lived asset group.

Given the significant decline in oil prices in the fourth quarter of 2014, we performed a long-lived asset impairment test for both asset groups. Significant assumptions impacting expected future undiscounted net cash flows include projections of future oil and natural gas prices, projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs, projected availability and cost of CO₂, projected recovery factors of tertiary reserves and risk-adjustment factors applied to the cash flows. The undiscounted net cash flows for our asset groups significantly exceeded the net carrying costs; thus, step two of the impairment test was not required and no impairment was recorded.

Asset Retirement Obligations

Asset Retirement Obligations

In general, our future asset retirement obligations relate to future costs associated with plugging and abandoning our oil, natural gas and CO₂ wells, removing equipment and facilities from leased acreage, and returning land to its original condition.  The fair value of a liability for an asset retirement obligation is recorded in the period in which it is incurred, discounted to its present value using our credit-adjusted-risk-free interest rate, and a corresponding amount capitalized by increasing the carrying amount of the related long-lived asset.  The liability is accreted each period, and the capitalized cost is depreciated over the useful life of the related asset.  Revisions to estimated retirement obligations will result in an adjustment to the related capitalized asset and corresponding liability.  If the liability for an oil or natural gas well is settled for an amount other than the recorded amount, the difference is recorded to the full cost pool, unless significant.

Asset retirement obligations are estimated at the present value of expected future net cash flows.  We utilize unobservable inputs in the estimation of asset retirement obligations that include, but are not limited to, costs of labor and materials, profits on costs of labor and materials, the effect of inflation on estimated costs, and the discount rate.  Accordingly, asset retirement obligations are considered a Level 3 measurement under the FASC Fair Value Measurement topic.

Commodity Derivative Contracts

Commodity Derivative Contracts

We utilize oil and natural gas derivative contracts to mitigate our exposure to commodity price risk associated with our future oil and natural gas production.  These derivative contracts have historically consisted of options, in the form of price floors, collars or three-way collars, fixed-price swaps and fixed-price swaps enhanced with a sold put.  Our derivative financial instruments are recorded on the balance sheet as either an asset or a liability measured at fair value.  We do not apply hedge accounting to our commodity derivative contracts; accordingly, changes in the fair value of these instruments are recognized in our Consolidated Statements of Operations in the period of change.

We do not apply hedge accounting treatment to our oil and natural gas derivative contracts; therefore, the changes in the fair values of these instruments are recognized in income in the period of change.  These fair value changes, along with the settlements of expired contracts, are shown under "Commodity derivatives expense (income)" in our Consolidated Statements of Operations.

From time to time, we enter into various oil and natural gas derivative contracts to provide an economic hedge of our exposure to commodity price risk associated with anticipated future oil and natural gas production.  We do not hold or issue derivative financial instruments for trading purposes.  These contracts have historically consisted of price floors, collars, three-way collars, fixed-price swaps, and fixed-price swaps enhanced with a sold put.  The production that we hedge has varied from year to year depending on our levels of debt and financial strength and expectation of future commodity prices.  For the past several years, we have employed a strategy to hedge a substantial portion of our forecasted production approximately 18 months to two years in the future (from the then-current quarter), as we believe it is important to protect our future cash flow to provide a level of assurance for our capital spending and dividends in those future periods. With the decline in commodity futures prices in late 2014 and early 2015, as of late February 2015, we have deferred entering into new oil derivative contracts since the third quarter of 2014. Therefore, as of February 19, 2015, the percentage of our forecasted oil production that is currently hedged for the fourth quarter of 2015 and calendar 2016 is less than the percentage hedged in recent years. During periods of lower oil prices, we may defer entering into new contracts until futures prices return to levels that we consider economically conducive to our doing so.

We manage and control market and counterparty credit risk through established internal control procedures that are reviewed on an ongoing basis. We attempt to minimize credit risk exposure to counterparties through formal credit policies, monitoring procedures, and diversification, and all of our commodity derivative contracts are with parties that are lenders under our Bank Credit Agreement (or affiliates of such lenders). As of December 31, 2014, all of our outstanding derivative contracts were subject to enforceable master netting arrangements whereby payables on those contracts can be offset against receivables from separate derivative contracts with the same counterparty. It is our policy to classify derivative assets and liabilities on a gross basis on our balance sheets, even if the contracts are subject to enforceable master netting arrangements.

Concentrations of Credit Risk

Concentrations of Credit Risk

Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash equivalents, trade and accrued production receivables, and the derivative instruments discussed above.  Our cash equivalents represent high-quality securities placed with various investment-grade institutions.  This investment practice limits our exposure to concentrations of credit risk.  Our trade and accrued production receivables are dispersed among various customers and purchasers; therefore, concentrations of credit risk are limited.  We evaluate the credit ratings of our purchasers, and if customers are considered a credit risk, letters of credit are the primary security obtained to support lines of credit.  We attempt to minimize our credit risk exposure to the counterparties of our oil and natural gas derivative contracts through formal credit policies, monitoring procedures and diversification.  All of our derivative contracts are with parties that are lenders under our bank credit facility (or affiliates of such lenders).  There are no margin requirements with the counterparties of our derivative contracts.

Oil and natural gas sales are made on a day-to-day basis or under short-term contracts at the current area market price.  We would not expect the loss of any purchaser to have a material adverse effect upon our operations.  For the year ended December 31, 2014, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (31%), Plains Marketing LP (13%), and ConocoPhillips (12%). For the year ended December 31,2013, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (33%), Plains Marketing LP (15%), and Eighty-Eight Oil LLC (10%). For the year ended December 31,2012, two purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (39%) and Plains Marketing LP (17%).

Revenue Recognition

Revenue Recognition

Revenue Recognition. Revenue is recognized at the time oil and natural gas is produced and sold.  Any amounts due from purchasers of oil and natural gas are included in accrued production receivable.

We follow the sales method of accounting for our oil and natural gas revenue, whereby we recognize revenue on oil or natural gas sold to our purchasers regardless of whether the sales are proportionate to our ownership in the property.  A receivable or liability is recognized only to the extent that we have an imbalance on a specific property greater than the expected remaining proved reserves.  As of December 31, 2014 and 2013, our aggregate oil and natural gas imbalances were not material to our consolidated financial statements.

We recognize revenue and expenses of purchased producing properties at the time we assume effective control, commencing from either the closing or purchase agreement date, depending on the underlying terms and agreements.  We follow the same methodology in reverse when we sell properties by recognizing revenue and expenses of the sold properties until the closing date.

Income Taxes

Income Taxes

Income taxes are accounted for using the asset and liability method, under which deferred income taxes are recognized for the future tax effects of temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities using the enacted statutory tax rates in effect at year end.  The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the enactment date.  A valuation allowance for deferred tax assets is recorded when it is more likely than not that the benefit from the deferred tax asset will not be realized.

We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained upon examination by the taxing authorities, based on the technical merits of the position.  The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement.

Net Income Per Common Share

Net Income Per Common Share

Basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period.  Diluted net income per common share is calculated in the same manner, but includes the impact of potentially dilutive securities. Potentially dilutive securities consist of stock options, stock appreciation rights ("SARs"), nonvested restricted stock and nonvested performance-based equity awards. For each of the three years in the period ended December 31, 2014, there were no adjustments to net income for purposes of calculating basic and diluted net income per common share.

The following is a reconciliation of the weighted average shares used in the basic and diluted net income per common share calculations for the periods indicated:

	Year Ended December 31,
In thousands	2014	2013	2012
Basic weighted average common shares outstanding	348,962	366,659	385,205
Potentially dilutive securities
Restricted stock, stock options, SARs and performance-based equity awards	2,205	3,218	3,733
Diluted weighted average common shares outstanding	351,167	369,877	388,938

Basic weighted average common shares exclude shares of nonvested restricted stock. As these restricted shares vest, they will be included in the shares outstanding used to calculate basic net income per common share (although all non-performance-based restricted stock is issued and outstanding upon grant).  For purposes of calculating diluted weighted average common shares, the nonvested restricted stock, stock options, SARs, and performance-based equity awards are included in the computation using the treasury stock method, with the deemed proceeds equal to the average unrecognized compensation during the period, the purchase price that the grantee will pay in the future for stock options, and any estimated future tax consequences recognized directly in equity. Stock options and SARs of 4.8 million, 3.6 million and 4.1 million shares for the years ended December 31, 2014, 2013 and 2012, respectively, could potentially dilute earnings per share in the future, but were excluded from the computation of diluted net income per share as their effect would have been antidilutive.

Environmental and Litigation Contingencies

Environmental and Litigation Contingencies

The Company makes judgments and estimates in recording liabilities for contingencies such as environmental remediation or ongoing litigation.  Liabilities are recorded when it is both probable that a loss has been incurred and such loss is reasonably estimable.  Assessments of liabilities are based on information obtained from independent and in-house experts, loss experience in similar situations, actual costs incurred, and other case-by-case factors.  Any related insurance recoveries are recognized in our financial statements during the period received or at the time receipt is determined to be virtually certain.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Revenue Recognition. In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). ASU 2014-09 amends the guidance for revenue recognition to replace numerous, industry-specific requirements. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU implements a five-step process for customer contract revenue recognition that focuses on transfer of control, as opposed to transfer of risk and rewards. The amendment also requires enhanced disclosures regarding the nature, amount, timing and uncertainty of revenues and cash flows arising from contracts with customers. The amendments in this ASU are effective for reporting periods beginning after December 15, 2016, and early adoption is prohibited. Entities can transition to the standard either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. Management is currently assessing the impact the adoption of ASU 2014-09 will have on our consolidated financial statements.

Discontinued Operations. In April 2014, the FASB issued ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity ("ASU 2014-08"). ASU 2014-08 amends the definition of a discontinued operation under the Discontinued Operations subtopic of the FASC and requires entities to disclose additional information about discontinued operations and disposal transactions that do not meet the discontinued operations criteria. ASU 2014-08 will be applied prospectively for disposals of components of an entity and businesses or nonprofit activities that meet the criteria to be classified as held for sale and occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. The adoption of ASU 2014-08 is currently not expected to have a material effect on our consolidated financial statements.

Fair Value Measurements and Disclosures

The FASC Fair Value Measurement topic defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (often referred to as the "exit price").  We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique.  These inputs can be readily observable, market corroborated or generally unobservable.  We primarily apply the income approach for recurring fair value measurements and endeavor to utilize the best available information.  Accordingly, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs.  We are able to classify fair value balances based on the observability of those inputs.  The FASC establishes a fair value hierarchy that prioritizes the inputs used to measure fair value.  The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement).  The three levels of the fair value hierarchy are as follows:

• Level 1 — Quoted prices in active markets for identical assets or liabilities as of the reporting date.

• Level 2 — Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reported date.  Level 2 includes those financial instruments that are valued using models or other valuation methodologies.  Instruments in this category include non-exchange-traded oil and natural gas derivatives that are based on NYMEX pricing.  Our costless collars and the sold put features of our enhanced oil swaps and three-way collars are valued using the Black-Scholes model, an industry standard option valuation model that takes into account inputs such as contractual prices for the underlying instruments, including maturity, quoted forward prices for commodities, interest rates, volatility factors and credit worthiness, as well as other relevant economic measures.  Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

• Level 3 — Pricing inputs include significant inputs that are generally less observable.  These inputs may be used with internally developed methodologies that result in management's best estimate of fair value.  At December 31, 2014, instruments in this category include non-exchange-traded oil derivatives that are based on regional pricing other than NYMEX (e.g., Light Louisiana Sweet). The valuation models utilized for enhanced swaps, costless collars and three-way collars are consistent with the methodologies described above; however, since the instruments are based on regional pricing other than NYMEX, certain inputs to the valuation are less observable. Implied volatilities utilized in the valuation of Level 3 instruments are developed using a benchmark, which is considered a significant unobservable input. A one percent increase or decrease in implied volatility would result in a change of approximately $1.4 million in the fair value of these instruments as of December 31, 2014.

We adjust the valuations from the valuation model for nonperformance risk, using our estimate of the counterparty's credit quality for asset positions and our credit quality for liability positions.  We use multiple sources of third-party credit data in determining counterparty nonperformance risk, including credit default swaps.

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Property and Equipment (Summary of Unevaluated Properties Excluded from Amortization) (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of unevaluated properties excluded from oil and natural gas properties being amortized
Property acquisition costs	$ 6,500	$ 215,822	$ 102,377	$ 329,840
Exploration and development	125,783	40,835	22,080	10,361
Capitalized interest	21,807	24,898	12,084	6,019
Total	154,090	281,555	136,541	346,220
Property acquisition costs	654,539
Exploration and development	199,059
Capitalized interest	64,808
Total	$ 918,406	$ 780,481

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Significant Accounting Policies (Details Textuals) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Significant Accounting Policies [Line Items]
Ceiling test write-down	$ 0	$ 0	$ 0
Impairment of Goodwill	0	0	0
Amortization of Intangible Assets	$ 2,300,000	$ 1,300,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Total	4.8	3.6	4.1
Minimum [Member] | Co2 Property And Pipelines [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	15 years
Minimum [Member] | Riley Ridge gas processing facility [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	20 years
Minimum [Member] | Vehicles and furniture and fixtures [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	5 years
Minimum [Member] | Computer equipment and software [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Maximum [Member] | Co2 Property And Pipelines [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	50 years
Maximum [Member] | Riley Ridge gas processing facility [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	50 years
Maximum [Member] | Vehicles and furniture and fixtures [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	10 years
Maximum [Member] | Computer equipment and software [Member]
Significant Accounting Policies [Line Items]
Estimated useful lives	5 years

XML

Commodity Derivative Contracts (Commodity Derivatives Outstanding Table) (Details)	Dec. 31, 2014
Year 2015 [Member] | Collar [Member] | NYMEX [Member] | Natural Gas Contracts [Member]
Derivative [Line Items]
Volume per day	8,000
Derivative, Floor Price	4.00
Derivative, Cap Price	4.53
Weighted average floor price	4.00
Weighted average ceiling price	4.51
Year 2015 [Member] | Q1 [Member] | Swap [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	14,000
Derivative, Floor Price	90.00
Derivative, Cap Price	90.30
Weighted average swap price	90.06
Weighted average sold put price	65.21
Year 2015 [Member] | Q1 [Member] | Swap [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	16,000
Derivative, Floor Price	93.20
Derivative, Cap Price	94.00
Weighted average swap price	93.63
Weighted average sold put price	68.00
Year 2015 [Member] | Q1 [Member] | Collar [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	24,000
Derivative, Floor Price	80.00
Derivative, Cap Price	100.90
Weighted average floor price	80.00
Weighted average ceiling price	96.75
Year 2015 [Member] | Q1 [Member] | Collar [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	4,000
Derivative, Floor Price	85.00
Derivative, Cap Price	102.20
Weighted average floor price	85.00
Weighted average ceiling price	102.10
Year 2015 [Member] | Q2 [Member] | Swap [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	8,000
Derivative, Floor Price	90.00
Derivative, Cap Price	90.00
Weighted average swap price	90.00
Weighted average sold put price	65.75
Year 2015 [Member] | Q2 [Member] | Swap [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	16,000
Derivative, Floor Price	93.20
Derivative, Cap Price	94.00
Weighted average swap price	93.65
Weighted average sold put price	68.00
Year 2015 [Member] | Q2 [Member] | Collar [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	30,000
Derivative, Floor Price	80.00
Derivative, Cap Price	95.25
Weighted average floor price	80.00
Weighted average ceiling price	94.72
Year 2015 [Member] | Q2 [Member] | Collar [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	4,000
Derivative, Floor Price	85.00
Derivative, Cap Price	102.50
Weighted average floor price	85.00
Weighted average ceiling price	101.75
Year 2015 [Member] | Q3 [Member] | Swap [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	10,000
Derivative, Floor Price	90.00
Derivative, Cap Price	90.10
Weighted average swap price	90.02
Weighted average sold put price	65.30
Year 2015 [Member] | Q3 [Member] | Swap [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	16,000
Derivative, Floor Price	93.20
Derivative, Cap Price	94.00
Weighted average swap price	93.65
Weighted average sold put price	68.00
Year 2015 [Member] | Q3 [Member] | Collar [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	28,000
Derivative, Floor Price	80.00
Derivative, Cap Price	95.25
Weighted average floor price	80.00
Weighted average ceiling price	95.05
Year 2015 [Member] | Q3 [Member] | Collar [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	4,000
Derivative, Floor Price	85.00
Derivative, Cap Price	100.00
Weighted average floor price	85.00
Weighted average ceiling price	99.50
Year 2015 [Member] | Q4 [Member] | Swap [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	12,000
Derivative, Floor Price	91.15
Derivative, Cap Price	94.00
Weighted average swap price	92.42
Weighted average sold put price	68.00
Year 2015 [Member] | Q4 [Member] | Swap [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	8,000
Derivative, Floor Price	93.80
Derivative, Cap Price	96.50
Weighted average swap price	94.94
Weighted average sold put price	68.00
Year 2015 [Member] | Q4 [Member] | Three-way Collar [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	10,000
Derivative, Floor Price	85.00
Derivative, Cap Price	102.00
Weighted average sold put price	68.00
Weighted average floor price	85.00
Weighted average ceiling price	99.00
Year 2015 [Member] | Q4 [Member] | Three-way Collar [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	8,000
Derivative, Floor Price	88.00
Derivative, Cap Price	104.25
Weighted average sold put price	68.00
Weighted average floor price	88.00
Weighted average ceiling price	100.99
Year 2016 [Member] | Q1 [Member] | Swap [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	12,000
Derivative, Floor Price	90.65
Derivative, Cap Price	93.35
Weighted average swap price	92.43
Weighted average sold put price	68.00
Year 2016 [Member] | Q1 [Member] | Swap [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	8,000
Derivative, Floor Price	93.70
Derivative, Cap Price	95.45
Weighted average swap price	94.81
Weighted average sold put price	68.50
Year 2016 [Member] | Q1 [Member] | Three-way Collar [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	10,000
Derivative, Floor Price	85.00
Derivative, Cap Price	101.25
Weighted average sold put price	68.00
Weighted average floor price	85.00
Weighted average ceiling price	99.85
Year 2016 [Member] | Q1 [Member] | Three-way Collar [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	6,000
Derivative, Floor Price	88.00
Derivative, Cap Price	103.15
Weighted average sold put price	68.00
Weighted average floor price	88.00
Weighted average ceiling price	102.10
Year 2016 [Member] | Q2 [Member] | Swap [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	2,000
Derivative, Floor Price	90.35
Derivative, Cap Price	90.35
Weighted average swap price	90.35
Weighted average sold put price	68.00
Year 2016 [Member] | Q2 [Member] | Swap [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	6,000
Derivative, Floor Price	93.30
Derivative, Cap Price	93.50
Weighted average swap price	93.38
Weighted average sold put price	70.00
Year 2016 [Member] | Q2 [Member] | Three-way Collar [Member] | NYMEX [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	2,000
Derivative, Floor Price	85.00
Derivative, Cap Price	95.50
Weighted average sold put price	68.00
Weighted average floor price	85.00
Weighted average ceiling price	95.50
Year 2016 [Member] | Q2 [Member] | Three-way Collar [Member] | LLS [Member] | Crude Oil Contracts [Member]
Derivative [Line Items]
Volume per day	2,000
Derivative, Floor Price	88.00
Derivative, Cap Price	98.25
Weighted average sold put price	70.00
Weighted average floor price	88.00
Weighted average ceiling price	98.25

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Additional Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2014

Text Block [Abstract]

Trade and Other Receivables, Net

Trade and Other Receivables, Net

	December 31,
In thousands	2014		2013
Commodity derivatives settlement receivables	$	59,755	$	—
Trade accounts receivable, net	45,407		53,737
Federal income tax receivable, net	37,652		—
Other receivables	14,141		24,558
Total	$	156,955	$	78,295

Accounts Payable and Accrued Liabilities

Accounts Payable and Accrued Liabilities

	December 31,
In thousands	2014		2013
Accrued exploration and development costs	$	90,939	$	100,564
Accounts payable	64,604		63,263
Accrued compensation	62,513		55,043
Accrued lease operating expenses	56,798		59,762
Accrued interest	48,255		68,871
Taxes payable	39,816		28,019
Other	31,833		35,021
Total	$	394,758	$	410,543

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Long-Term Debt (Components of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Bank Credit Agreement	$ 395,000	$ 340,000
Pipeline financings	220,583	228,167
Capital lease obligations	103,041	128,519
Total	3,571,370	3,296,782
Less: current obligations	(35,470)	(36,157)
Long-term debt and capital lease obligations	3,535,900	3,260,625
8 1/4% Senior Subordinated Notes due 2020 [Member]
Debt Instrument [Line Items]
Senior subordinated notes	0	996,273
Debt Instrument, Interest Rate, Stated Percentage	8.25%
6 3/8% Senior Subordinated Notes due 2021 [Member]
Debt Instrument [Line Items]
Senior subordinated notes	400,000	400,000
Debt Instrument, Interest Rate, Stated Percentage	6.375%
5 1/2% Senior Subordinated Notes Due 2022 [Member]
Debt Instrument [Line Items]
Senior subordinated notes	1,250,000	0
Debt Instrument, Interest Rate, Stated Percentage	5.50%
4 5/8% Senior Subordinated Notes due 2023 [Member]
Debt Instrument [Line Items]
Senior subordinated notes	1,200,000	1,200,000
Debt Instrument, Interest Rate, Stated Percentage	4.625%
Other Subordinated Notes [Member]
Debt Instrument [Line Items]
Senior subordinated notes	2,746	3,823
Including premium of	$ 11	$ 16

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Stock Compensation Plans (Summary of Vesting Date Fair Value of Awards - 2004 Restricted Stock Plan) (Details 6) (2004 Omnibus Stock and Incentive Plan, Restricted Stock [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
2004 Omnibus Stock and Incentive Plan | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock vested	$ 24,780	$ 21,529	$ 22,332

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Stockholders' Equity (Details Textuals) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Contribution Benefit Plans Disclosures [Line Items]
Total compensation expense	$ 30,513,000	$ 33,003,000	$ 29,310,000
Employee Stock Purchase Plan [Member]
Defined Contribution Benefit Plans Disclosures [Line Items]
Maximum number of common stock shares authorized for issuance under Plan	11,900,000
Shares available for future awards	354,074
Employer contribution rate	75.00%
Total compensation expense	7,000,000	6,500,000	5,700,000
401(k) Plan [Member]
Defined Contribution Benefit Plans Disclosures [Line Items]
Employer contribution rate	100.00%
Employer's matching contributions	$ 9,900,000	$ 9,000,000	$ 8,000,000
Maximum [Member] | Employee Stock Purchase Plan [Member]
Defined Contribution Benefit Plans Disclosures [Line Items]
Employee contribution rate	10.00%
Maximum [Member] | 401(k) Plan [Member]
Defined Contribution Benefit Plans Disclosures [Line Items]
Employee contribution rate	6.00%

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Asset Retirement Obligations (Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Asset Retirement Obligation Roll Forward Analysis [Roll Forward]
Beginning asset retirement obligations	$ 126,301		$ 106,430
Liabilities incurred and assumed during period	7,798		22,216
Revisions in estimated retirement obligations	(1,298)		4,730
Liabilities settled and sold during period	(13,576)		(15,523)
Accretion expense	8,870		8,448
Ending asset retirement obligations	128,095		126,301
Less: current asset retirement obligations	(1,684)	[1]	(6,413)	[1]
Long-term asset retirement obligations	$ 126,411		$ 119,888

[1] Included in "Accounts payable and accrued liabilities" in our Consolidated Balance Sheets.

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Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock ($.001 Par Value)	Paid-In Capital in Excess of Par	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock (at cost)
Beginning balance at Dec. 31, 2011	$ 4,806,498	$ 403	$ 3,090,374	$ 1,909,475	$ (418)	$ (193,336)
Beginning balance, shares at Dec. 31, 2011		402,946,070				13,965,673
Repurchase of common stock, value	(266,657)					(266,657)
Repurchase of common stock, shares	16,978,000					16,978,008
Issued or purchased pursuant to employee stock compensation plans, value	6,024	3	6,021
Issued or purchased pursuant to employee stock compensation plans, shares		3,197,476
Issued pursuant to employee stock purchase plan, value	13,260		1,607			11,653
Issued pursuant to employee stock purchase plan, shares						(815,385)
Issued pursuant to directors' compensation plan, value	321		321
Issued pursuant to directors' compensation plan, shares		19,648
Stock-based compensation	37,897		37,897
Income tax benefit from equity awards	241		241
Tax withholding - stock compensation, value	(8,125)					(8,125)
Tax withholding - stock compensation, shares						472,966
Derivative contracts, net	70				70
Net income	525,360			525,360
Ending balance at Dec. 31, 2012	5,114,889	406	3,136,461	2,434,835	(348)	(456,465)
Ending balance, shares at Dec. 31, 2012		406,163,194				30,601,262
Repurchase of common stock, value	(277,768)					(277,768)
Repurchase of common stock, shares	16,469,000					16,468,648
Issued or purchased pursuant to employee stock compensation plans, value	5,489	3	5,486
Issued or purchased pursuant to employee stock compensation plans, shares		3,038,767
Issued pursuant to employee stock purchase plan, value	15,104		1,844			13,260
Issued pursuant to employee stock purchase plan, shares						(860,901)
Issued pursuant to directors' compensation plan, value	344		344
Issued pursuant to directors' compensation plan, shares		13,612
Stock-based compensation	42,091		42,091
Income tax benefit from equity awards	488		488
Tax withholding - stock compensation, value	(8,900)					(8,900)
Tax withholding - stock compensation, shares						501,887
Derivative contracts, net	72				72
Net income	409,597			409,597
Ending balance at Dec. 31, 2013	5,301,406	409	3,186,714	2,844,432	(276)	(729,873)
Ending balance, shares at Dec. 31, 2013		409,215,573				46,710,896
Repurchase of common stock, value	(200,369)					(200,369)
Repurchase of common stock, shares	12,398,000					12,398,017
Issued or purchased pursuant to employee stock compensation plans, value	7,023	3	7,020
Issued or purchased pursuant to employee stock compensation plans, shares		2,541,809
Issued pursuant to employee stock purchase plan, value	16,358		(3,272)			19,630
Issued pursuant to employee stock purchase plan, shares						(1,247,156)
Issued pursuant to directors' compensation plan, value	412		412
Issued pursuant to directors' compensation plan, shares		22,529
Stock-based compensation	39,532		39,532
Income tax benefit from equity awards	12		12
Tax withholding - stock compensation, value	(8,618)					(8,618)
Tax withholding - stock compensation, shares						553,750
Derivative contracts, net	67				67
Cash dividends declared ($0.25 per common share)	(87,458)			(87,458)
Net income	635,491			635,491
Ending balance at Dec. 31, 2014	$ 5,703,856	$ 412	$ 3,230,418	$ 3,392,465	$ (209)	$ (919,230)
Ending balance, shares at Dec. 31, 2014		411,779,911				58,415,507

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Stock Compensation Plans (Schedule of Share-Based Compensation) (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expensed	$ 30,513	$ 33,003	$ 29,310
Stock-based compensation capitalized	9,019	9,088	8,587
Total cost of stock-based compensation arrangements	39,532	42,091	37,897
Income tax benefit recognized for stock-based compensation arrangements	11,595	12,541	11,284
General and administrative expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expensed	27,789	30,429	26,463
Lease operating expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expensed	$ 2,724	$ 2,574	$ 2,847

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Significant Accounting Policies (Major Customers) (Details Textuals 2)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Marathon Petroleum Company [Member]
Product Information [Line Items]
Revenue from major customer (percentage)	31.00%	33.00%	39.00%
Plains Marketing LP [Member]
Product Information [Line Items]
Revenue from major customer (percentage)	13.00%	15.00%	17.00%
Eighty-Eight Oil LLC [Member]
Product Information [Line Items]
Revenue from major customer (percentage)		10.00%
ConocoPhillips [Member]
Product Information [Line Items]
Revenue from major customer (percentage)	12.00%

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Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Summary of net property and equipment balances

The following table presents a summary of our net property and equipment balances as of December 31, 2014 and 2013:

	December 31,
In thousands	2014			2013
Oil and natural gas properties
Proved properties	$	9,782,337		$	8,945,326
Unevaluated properties	918,406			780,481
Total	10,700,743			9,725,807
Accumulated depletion and depreciation	(3,679,883		)	(3,219,500		)
Net oil and natural gas properties	7,020,860			6,506,307
CO2 properties
CO2 properties	1,162,538			1,117,167
Accumulated depletion and depreciation	(183,646		)	(150,968		)
Net CO2 properties	978,892			966,199
Pipelines and plants
CO2 pipelines (1)	1,733,562			1,681,774
Plants	536,002			527,786
Total	2,269,564			2,209,560
Accumulated depletion and depreciation	(182,385		)	(134,697		)
Net plants and pipelines	2,087,179			2,074,863
Other property and equipment
Other property and equipment	468,051			466,969
Accumulated depletion and depreciation	(202,738		)	(163,060		)
Net other property and equipment	265,313			303,909
Net property and equipment	$	10,352,244		$	9,851,278

(1) Amount includes $98.5 million of CO₂ pipelines at December 31, 2014 that were under construction and not subject to depreciation during 2014.

Summary of unevaluated properties excluded from oil and natural gas properties being amortized

A summary of the unevaluated property costs excluded from oil and natural gas properties being amortized at December 31, 2014, and the year in which the costs were incurred follows:

	December 31, 2014
	Costs Incurred During:
In thousands	2014		2013		2012		2011 and Prior		Total
Property acquisition costs	$	6,500	$	215,822	$	102,377	$	329,840	$	654,539
Exploration and development	125,783		40,835		22,080		10,361		199,059
Capitalized interest	21,807		24,898		12,084		6,019		64,808
Total	$	154,090	$	281,555	$	136,541	$	346,220	$	918,406

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Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2014

Table Text Block Supplement [Abstract]

Changes In Asset Retirement Obligations

The following table summarizes the changes in our asset retirement obligations for the years ended December 31, 2014 and 2013:

	Year Ended December 31,
In thousands	2014			2013
Beginning asset retirement obligations	$	126,301		$	106,430
Liabilities incurred and assumed during period	7,798			22,216
Revisions in estimated retirement obligations	(1,298		)	4,730
Liabilities settled and sold during period	(13,576		)	(15,523		)
Accretion expense	8,870			8,448
Ending asset retirement obligations	128,095			126,301
Less: current asset retirement obligations (1)	(1,684		)	(6,413		)
Long-term asset retirement obligations	$	126,411		$	119,888

(1) Included in "Accounts payable and accrued liabilities" in our Consolidated Balance Sheets.

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Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets
Loss carryforwards - federal	$ 44,076	$ 20,247
Loss carryforwards - state	43,270	41,379
Tax credit carryover	34,837	34,837
Derivative contracts	0	21,341
Enhanced oil recovery credit carryforwards	42,817	14,974
Stock-based compensation	29,994	34,635
Other	32,656	37,679
Total deferred tax assets	227,650	205,092
Deferred tax liabilities
Property and equipment	(2,806,850)	(2,541,426)
Derivative contracts	(185,385)	0
Other	(11,984)	(10,206)
Total deferred tax liabilities	(3,004,219)	(2,551,632)
Total net deferred tax liability	$ (2,776,569)	$ (2,346,540)

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Acquisition (CCA PPA) (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Mar. 27, 2013
Business Combinations [Abstract]
Cash consideration	$ 1,001,707	[1]
Proved properties	783,507
Unevaluated properties	222,820
Other assets	2,589
Asset retirement obligations	(7,209)
Fair value of net assets acquired	$ 1,001,707

[1] See Note 6, Income Taxes, for additional information regarding the like-kind-exchange transaction utilized to fund this purchase and Note 13, Supplemental Cash Flow Information, for supplemental cash flow information regarding the cash payment.

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Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Components of Long-Term Debt

The following long-term debt and capital lease obligations were outstanding as of December 31, 2014 and 2013:

	December 31,
In thousands	2014			2013
Bank Credit Agreement	$	395,000		$	340,000
8¼% Senior Subordinated Notes due 2020	—			996,273
6⅜% Senior Subordinated Notes due 2021	400,000			400,000
5½% Senior Subordinated Notes due 2022	1,250,000			—
4⅝% Senior Subordinated Notes due 2023	1,200,000			1,200,000
Other Senior Subordinated Notes, including premium of $11 and $16, respectively	2,746			3,823
Pipeline financings	220,583			228,167
Capital lease obligations	103,041			128,519
Total	3,571,370			3,296,782
Less: current obligations	(35,470		)	(36,157		)
Long-term debt and capital lease obligations	$	3,535,900		$	3,260,625

Indebtedness repayable over the next five years and thereafter

Indebtedness Repayment Schedule

At December 31, 2014, our indebtedness, including our capital and financing lease obligations but excluding the discount and premium on our senior subordinated debt, is payable over the next five years and thereafter as follows:

In thousands
2015	$	35,470
2016	38,517
2017	37,087
2018	33,885
2019	422,879
Thereafter	3,003,521
Total indebtedness	$	3,571,359

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Tax Provision (Benefit)

Our income tax provision (benefit) is as follows:

	Year Ended December 31,
In thousands	2014			2013			2012
Current income tax expense (benefit)
Federal	$	(42,500	)	$	393		$	57,720
State	(407		)	9,864			18,034
Total current income tax expense (benefit)	(42,907		)	10,257			75,754
Deferred income tax expense (benefit)
Federal	400,544			222,559			239,862
State	29,429			(33		)	15,881
Total deferred income tax expense	429,973			222,526			255,743
Total income tax expense	$	387,066		$	232,783		$	331,497

Deferred Tax Assets And Liabilities

Significant components of our deferred tax assets and liabilities as of December 31, 2014 and 2013 are as follows:

	December 31,
In thousands	2014			2013
Deferred tax assets
Loss carryforwards – federal	$	44,076		$	20,247
Loss carryforwards – state	43,270			41,379
Tax credit carryover	34,837			34,837
Derivative contracts	—			21,341
Enhanced oil recovery credit carryforwards	42,817			14,974
Stock-based compensation	29,994			34,635
Other	32,656			37,679
Total deferred tax assets	227,650			205,092
Deferred tax liabilities
Property and equipment	(2,806,850		)	(2,541,426		)
Derivative contracts	(185,385		)	—
Other	(11,984		)	(10,206		)
Total deferred tax liabilities	(3,004,219		)	(2,551,632		)
Total net deferred tax liability	$	(2,776,569	)	$	(2,346,540	)

Income Tax Provision (Benefit) Continuing Operations Income Tax Reconciliation

Our reconciliation of income tax expense computed by applying the U.S. federal statutory rate and the reported effective tax rate on income from continuing operations is as follows:

	Year Ended December 31,
In thousands	2014			2013			2012
Income tax provision calculated using the federal statutory income tax rate	$	357,895		$	224,833		$	299,900
State income taxes, net of federal income tax benefit	25,368			13,518			30,955
Effect of statutory rate change	4,225			(4,178		)	(429		)
Other	(422		)	(1,390		)	1,071
Total income tax expense	$	387,066		$	232,783		$	331,497

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Net income	$ 635,491	$ 409,597	$ 525,360
Adjustments to reconcile net income to cash flows from operating activities
Depletion, depreciation, and amortization	592,972	509,943	507,538
Deferred income taxes	429,973	222,526	255,743
Stock-based compensation	30,513	33,003	29,310
Commodity derivatives expense (income)	(555,255)	41,024	(4,834)
Settlements of commodity derivatives	1,421	(662)	17,880
Loss on early extinguishment of debt	113,908	44,651	0
Amortization of debt issuance costs and discounts	13,476	14,023	14,695
Impairment of assets	0	0	17,515
Other, net	6,311	(2,318)	16,917
Changes in assets and liabilities, net of effects from acquisitions
Accrued production receivable	80,285	(15,085)	36,234
Trade and other receivables	(78,469)	4,981	45,836
Other current and long-term assets	3,174	10,462	7,688
Accounts payable and accrued liabilities	501	91,816	5,828
Oil and natural gas production payable	(46,506)	12,731	(23,460)
Other liabilities	(4,970)	(15,497)	(41,359)
Net cash provided by operating activities	1,222,825	1,361,195	1,410,891
Cash flows from investing activities
Oil and natural gas capital expenditures	(946,846)	(900,221)	(1,122,615)
Acquisitions of oil and natural gas properties	(8,773)	(9,243)	(156,082)
Bakken exchange transaction	0	(10,385)	281,669
CO2 capital expenditures	(48,134)	(93,744)	(131,043)
Pipelines and plants capital expenditures	(72,151)	(184,286)	(330,417)
Purchases of other assets	(3,197)	(65,987)	(25,765)
Net proceeds from sales of oil and natural gas properties and equipment	3,453	8,037	34,750
Net proceeds from sale of short-term investments	0	0	83,545
Other	(1,107)	(19,480)	(10,883)
Net cash used in investing activities	(1,076,755)	(1,275,309)	(1,376,841)
Cash flows from financing activities
Bank repayments	(2,609,000)	(1,550,000)	(1,555,000)
Bank borrowings	2,664,000	1,190,000	1,870,000
Repayment of senior subordinated notes	(997,345)	(651,270)	0
Premium paid on repayment of senior subordinated notes	(101,342)	(36,475)	0
Net proceeds from issuance of senior subordinated notes	1,250,000	1,200,000	0
Costs of debt financing	(24,407)	(20,161)	(34)
Common stock repurchase program	(211,356)	(281,958)	(251,480)
Cash dividends paid	(87,044)	0	0
Other	(18,610)	(22,346)	(17,718)
Net cash provided by (used in) financing activities	(135,104)	(172,210)	45,768
Net increase (decrease) in cash and cash equivalents	10,966	(86,324)	79,818
Cash and cash equivalents at beginning of year	12,187	98,511	18,693
Cash and cash equivalents at end of year	$ 23,153	$ 12,187	$ 98,511

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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2014

Stockholders' Equity Note [Abstract]

Summary of Share Repurchases Table

The following table presents a summary of repurchases under our share repurchase program:

	Total Repurchases Since Inception		Year Ended December 31,
In thousands, except per-share data			2014		2013		2012
Total amount repurchased	$	940,021	$	200,369	$	277,768	$	266,657
Weighted average price per share	$	15.68	$	16.16	$	16.87	$	15.71
Denbury common stock repurchased (shares)	59,957		12,398		16,469		16,978

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Commitments and Contingencies (Schedule of Future Operating Lease Payments) (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Leases, Operating [Abstract]
Operating Leases in Year 1	$ 12,556
Operating Leases in Year 2	12,532
Operating Leases in Year 3	12,774
Operating Leases in Year 4	12,730
Operating Leases in Year 5	11,203
Operating Leases, Thereafter	56,630
Operating Leases, Total minimum lease payments	$ 118,425

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Significant Accounting Policies (Estimated Amortization Expense for Intangibles) (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 2,289
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2,488
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2,788
Finite-Lived Intangible Assets, Amortization Expense, Year Four	2,858
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 2,833

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Long-Term Debt (Debt Maturity Schedule) (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Indebtedness repayment schedule
2015	$ 35,470
2016	38,517
2017	37,087
2018	33,885
2019	422,879
Thereafter	3,003,521
Total indebtedness	$ 3,571,359

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Stock Compensation Plans (Summary of Performance Based Equity Awards) (Details 11) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Performance-based TSR Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested at December 31, 2013	296,391
Weighted average grant-date fair value, December 31, 2013	$ 21.43
Granted	275,870
Weighted average grant-date fair value, granted	$ 19.81	$ 20.08	$ 24.68
Forfeited	(38,650)
Weighted average grant-date fair value, forfeited	$ 20.50
Nonvested at December 31, 2014	533,611	296,391
Weighted average grant-date fair value, December 31, 2014	$ 20.66	$ 21.43
Performance-based Operational Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested at December 31, 2013	209,474
Weighted average grant-date fair value, December 31, 2013	$ 16.77
Granted	275,870
Weighted average grant-date fair value, granted	$ 16.55
Forfeited	(33,946)
Weighted average grant-date fair value, forfeited	$ 16.64
Nonvested at December 31, 2014	451,398
Weighted average grant-date fair value, December 31, 2014	$ 16.65

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 23,153	$ 12,187
Accrued production receivable	181,761	262,047
Trade and other receivables, net	156,955	78,295
Derivative assets	440,359	5
Deferred tax assets	0	52,754
Other current assets	10,452	9,271
Total current assets	812,680	414,559
Oil and natural gas properties (using full cost accounting)
Proved properties	9,782,337	8,945,326
Unevaluated properties	918,406	780,481
CO2 properties	1,162,538	1,117,167
Pipelines and plants	2,269,564	2,209,560
Other property and equipment	468,051	466,969
Less accumulated depletion, depreciation, amortization and impairment	(4,248,652)	(3,668,225)
Net property and equipment	10,352,244	9,851,278
Derivative assets	66,187	9,942
Goodwill	1,283,590	1,283,590
Other assets	213,101	229,368
Total assets	12,727,802	11,788,737
Current liabilities
Accounts payable and accrued liabilities	394,758	410,543
Oil and gas production payable	128,170	174,677
Derivative liabilities	0	53,822
Deferred tax liabilities	81,727	0
Current maturities of long-term debt	35,470	36,157
Total current liabilities	640,125	675,199
Long-term liabilities
Long-term debt, net of current portion	3,535,900	3,260,625
Asset retirement obligations	126,411	119,888
Derivative liabilities	0	3,413
Deferred tax liabilities	2,694,842	2,399,294
Other liabilities	26,668	28,912
Total long-term liabilities	6,383,821	5,812,132
Commitments and contingencies (Note 11)
Stockholders' equity
Preferred stock, $.001 par value, 25,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $.001 par value, 600,000,000 shares authorized; 411,779,911 and 409,215,573 shares issued, respectively	412	409
Paid-in capital in excess of par	3,230,418	3,186,714
Retained earnings	3,392,465	2,844,432
Accumulated other comprehensive loss	(209)	(276)
Treasury stock, at cost, 58,415,507 and 46,710,896 shares, respectively	(919,230)	(729,873)
Total stockholders' equity	5,703,856	5,301,406
Total liabilities and stockholders' equity	$ 12,727,802	$ 11,788,737

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Acquisitions and Divestitures (Pro Forma Table) (Details 3) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]
Pro forma total revenues and other income	$ 2,599,301
Pro forma net income	$ 439,801
Pro forma net income per common share
Basic	$ 1.20
Diluted	$ 1.19

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Consolidated Statements of Comprehensive Operations (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 635,491	$ 409,597	$ 525,360
Other comprehensive income, net of income tax
Interest rate lock derivative contracts reclassified to income, net of tax of $45, $40 and $43, respectively	67	72	70
Total other comprehensive income	67	72	70
Comprehensive income	$ 635,558	$ 409,669	$ 525,430

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Stockholders' Equity (Details) (USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 31, 2011
Stockholders' Equity Note [Abstract]
Cash dividend payment					$ 87,044,000	$ 0	$ 0
Common stock cash dividend per share	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.25	$ 0	$ 0
Stock Repurchase Program, Authorized Amount	1,162,000,000				1,162,000,000			500,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 221,900,000				$ 221,900,000

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair value hierarchy of financial assets and liabilities

The following table sets forth by level within the fair value hierarchy our financial assets and liabilities that were accounted for at fair value on a recurring basis as of December 31, 2014 and 2013:

	Fair Value Measurements Using:
	Quoted Prices in Active Markets		Significant Other Observable Inputs			Significant Unobservable Inputs
In thousands	(Level 1)		(Level 2)			(Level 3)			Total
December 31, 2014
Assets
Oil and natural gas derivative contracts – current	$	—	$	283,238		$	157,121		$	440,359
Oil and natural gas derivative contracts – long-term	—		34,862			31,325			66,187
Total Assets	$	—	$	318,100		$	188,446		$	506,546
December 31, 2013
Assets
Oil and natural gas derivative contracts – current	$	—	$	5		$	—		$	5
Oil and natural gas derivative contracts – long-term	—		3,034			6,908			9,942
Total Assets	$	—	$	3,039		$	6,908		$	9,947
Liabilities
Oil and natural gas derivative contracts – current	$	—	$	(53,822	)	$	—		$	(53,822	)
Oil and natural gas derivative contracts – long-term	—		(3,214		)	(199		)	(3,413		)
Total Liabilities	$	—	$	(57,036	)	$	(199	)	$	(57,235	)

Changes in fair value of Level 3 assets and liabilities

The following table summarizes the changes in the fair value of our Level 3 assets and liabilities for the years ended December 31, 2014 and 2013:

	Year Ended December 31,
In thousands	2014		2013
Fair value of Level 3 instruments, beginning of year	$	6,709	$	—
Fair value adjustments on commodity derivatives	181,737		6,709
Fair value of Level 3 instruments, end of year	$	188,446	$	6,709
The amount of total gains for the period included in earnings attributable to the change in unrealized gains relating to assets still held at the reporting date	$	181,737	$	6,709

Quantitative valuation techniques for assets and liabilities measured on a recurring basis (Level 3)

The following table details fair value inputs related to implied volatilities utilized in the valuation of our Level 3 oil derivative contracts:

	Fair Value at 12/31/2014 (in thousands)		Valuation Technique	Unobservable Input	Range
Oil derivative contracts	$	188,446	Discounted cash flow / Black-Scholes	Volatility of Light Louisiana Sweet for settlement periods beginning after January 1, 2015	29.3% – 44.2%

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Stock Compensation Plans (Summary of Value of Stock Options and SARs) (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Intrinsic value of stock options and SARs exercised	$ 7,985	$ 17,287	$ 17,315
Grant-date fair value of stock options and SARs vested	$ 9,998	$ 12,852	$ 26,391

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Additional Balance Sheet Details

12 Months Ended

Dec. 31, 2014

Disclosure Text Block [Abstract]

Supplemental Balance Sheet Disclosures

Note 12. Additional Balance Sheet Details

Trade and Other Receivables, Net

	December 31,
In thousands	2014		2013
Commodity derivatives settlement receivables	$	59,755	$	—
Trade accounts receivable, net	45,407		53,737
Federal income tax receivable, net	37,652		—
Other receivables	14,141		24,558
Total	$	156,955	$	78,295

Allowance for Doubtful Accounts

We record an allowance for doubtful accounts for receivables that we determine to be uncollectible based on the specific identification basis. The allowance for doubtful accounts, which is netted against "Trade and other receivables" on the Consolidated Balance Sheets, was $0.4 million and $0.3 million at December 31, 2014 and 2013, respectively.

Accounts Payable and Accrued Liabilities

	December 31,
In thousands	2014		2013
Accrued exploration and development costs	$	90,939	$	100,564
Accounts payable	64,604		63,263
Accrued compensation	62,513		55,043
Accrued lease operating expenses	56,798		59,762
Accrued interest	48,255		68,871
Taxes payable	39,816		28,019
Other	31,833		35,021
Total	$	394,758	$	410,543

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Table Text Block [Abstract]

Schedule of operating lease payments paid and received

The following table summarizes operating lease payments paid and sublease rentals received during the periods indicated:

	Year Ended December 31,
In thousands	2014		2013		2012
Operating lease payments	$	43,333	$	37,211	$	33,606
Sublease rental receipts	2,347		2,237		2,685

Schedule of capital long-term commitments which require future minimum rental payments

The following tables summarize by year the remaining non-cancelable future payments under our leases as of December 31, 2014:

In thousands	Pipeline and Capital Leases
2015	$	61,225
2016	61,906
2017	56,072
2018	53,083
2019	44,960
Thereafter	237,473
Total minimum lease payments	514,719
Less: Amount representing interest	(191,095		)
Present value of minimum lease payments	$	323,624

Schedule of operating long-term commitments which require future minimum lease payments

In thousands	Operating Leases
2015	$	12,556
2016	12,532
2017	12,774
2018	12,730
2019	11,203
Thereafter	56,630
Total minimum lease payments	$	118,425

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Subsequent Events

12 Months Ended

Dec. 31, 2014

Subsequent Events [Abstract]

Subsequent Events

Note 14. Subsequent Events

Equity Award Grant

The Compensation Committee of our Board of Directors granted long-term equity incentive awards to our employees under the 2004 Plan on January 9, 2015.  The grants included 3,453,425 shares of restricted stock valued at $7.31 per share (the closing price of Denbury's common stock on January 9, 2015). The awards generally vest 33% per year over a three-year period.

Dividend Declaration

On January 27, 2015, the Board of Directors declared a dividend of $0.0625 per share on our outstanding common stock, payable on March 31, 2015, to stockholders of record at the close of business on February 24, 2015.

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Stock Compensation Plans (Summary of 2004 Restricted Stock Plan) (Details 7) (2004 Omnibus Stock and Incentive Plan, Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2014
2004 Omnibus Stock and Incentive Plan | Restricted Stock [Member]
Nonvested Resticted Stock Outstanding [Line Items]
Nonvested at December 31, 2013	3,761,084
Weighted average grant-date fair value, December 31, 2013	$ 15.98
Granted	2,001,148
Weighted average grant-date fair value, granted	$ 16.34
Vested	(1,512,407)
Weighted Average Grant-Date Fair Value, vested	$ 16.91
Forfeited	(510,791)
Weighted average grant-date fair value, forfeited	$ 13.27
Nonvested at December 31, 2014	3,739,034
Weighted average grant-date fair value, December 31, 2014	$ 16.17

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Consolidated Statements of Comprehensive Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other comprehensive income, net of income tax
Tax for interest rate lock derivative contracts reclassified to income	$ 45	$ 40	$ 43

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Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Stockholders' equity
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized (actual number)	25,000,000	25,000,000
Preferred stock, shares issued (actual number)	0	0
Preferred stock, shares outstanding (actual number)	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized (actual number)	600,000,000	600,000,000
Common stock, shares issued (actual number)	411,779,911	409,215,573
Treasury stock, shares (actual number)	58,415,507	46,710,896

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Stockholders' Equity

12 Months Ended

Dec. 31, 2014

Stockholders' Equity Note [Abstract]

Stockholders' Equity

Note 7. Stockholders' Equity

Dividends

During 2014, we paid aggregate cash dividends of $87.0 million to holders of our outstanding common stock at a quarterly rate of $0.0625 per outstanding common share, or an annual rate of $0.25 per common share. See Note 14, Subsequent Events, for details regarding the dividend declared in the first quarter of 2015.

Stock Repurchase Program

In October 2011, we commenced a common share repurchase program for up to $500 million of Denbury common shares, as approved by the Company's Board of Directors.  During 2012 and 2013, the Board of Directors increased the dollar amount of Denbury common shares that could be purchased under the program to an aggregate of up to $1.162 billion. The program has no pre-established ending date and may be suspended or discontinued at any time.  In November 2014, the Company's Board of Directors suspended the common share repurchase program in light of commodity price uncertainty and to maintain our solid financial position. We are not obligated to repurchase any dollar amount or specific number of shares of our common stock under the program.  The following table presents a summary of repurchases under our share repurchase program:

	Total Repurchases Since Inception		Year Ended December 31,
In thousands, except per-share data			2014		2013		2012
Total amount repurchased	$	940,021	$	200,369	$	277,768	$	266,657
Weighted average price per share	$	15.68	$	16.16	$	16.87	$	15.71
Denbury common stock repurchased (shares)	59,957		12,398		16,469		16,978

As of December 31, 2014, an additional $221.9 million remains authorized for purchases of common stock under this repurchase program (but subject to the current suspension of this program by the Company's Board of Directors in November 2014). We account for treasury stock using the cost method and include treasury stock as a component of stockholders' equity.

Employee Stock Purchase Plan

We have an Employee Stock Purchase Plan that is authorized to issue up to 11,900,000 shares of common stock.  As of December 31, 2014, there were 354,074 authorized shares remaining to be issued under the plan.  We intend to increase the number of shares authorized for issuance under this plan, subject to shareholder approval at our 2015 annual meeting. In accordance with the plan, eligible employees may contribute up to 10% of their base salary, and we match 75% of their contribution.  The combined funds are used to purchase previously unissued Denbury common stock or treasury stock that we purchased in the open market for that purpose, in either case, based on the market value of our common stock at the end of each quarter.  We recognize compensation expense for the Company match portion, which totaled $7.0 million, $6.5 million and $5.7 million for the years ended December 31, 2014, 2013 and 2012, respectively.  This plan is administered by the Compensation Committee of our Board of Directors.

401(k) Plan

We offer a 401(k) plan to which employees may contribute tax-deferred earnings subject to IRS limitations.  We match 100% of an employee's contribution, up to 6% of compensation, as defined by the plan, which is vested immediately.  During 2014, 2013 and 2012, our matching contributions to the 401(k) Plan were approximately $9.9 million, $9.0 million and $8.0 million, respectively.

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Subsequent Events (Details Textuals) (Subsequent Event [Member], USD $)	0 Months Ended
	Jan. 09, 2015	Jan. 27, 2015
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.0625
Restricted Stock [Member]
Subsequent Event [Line Items]
Awards Granted	3,453,425
Value (per share) of restricted stock grant	$ 7.31
Equity award vesting percentage	33.00%

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Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jan. 31, 2015	Jun. 30, 2014
Document And Company Information [Abstract]
Entity Registrant Name	Denbury Resources Inc.
Entity Central Index Key	0000945764
Document Type	10-K
Document Period End Date	Dec. 31, 2014
Amendment Flag	false
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 6,386,671,272
Entity Common Stock, Shares Outstanding		356,635,504

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Stock Compensation Plans

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

Note 8. Stock Compensation Plans

Stock Incentive Plans

We have two stock compensation plans.  The first plan (providing only for the issuance of stock options) has been in existence since 1995 (the "1995 Plan") and expired in August 2005 (although options granted under the 1995 Plan prior to that time can remain outstanding for up to 10 years).  The second plan, the 2004 Omnibus Stock and Incentive Plan (the "2004 Plan"), was approved by the stockholders in May 2004 and will expire in May 2024.  The 2004 Plan provides for the issuance of incentive and non-qualified stock options, restricted stock awards, restricted stock units, SARs settled in stock, and performance-based awards that may be issued to officers, employees, directors and consultants.  Awards covering a total of 34.5 million shares of common stock have been authorized for issuance pursuant to the 2004 Plan, of which awards covering no more than 27.2 million shares may be issued in the form of restricted stock or performance-based awards.  At December 31, 2014, 9.7 million shares were available under the 2004 Plan for future issuance of awards, all of which could be issued in the form of restricted stock or performance-based awards.  Our incentive compensation program is administered by the Compensation Committee of our Board of Directors.

Prior to January 1, 2006, we granted incentive and non-qualified stock options to our employees.  Effective January 1, 2006, we completely replaced the use of stock options for employees with SARs settled in stock, as SARs are less dilutive to our stockholders while providing an employee with essentially the same economic benefits as stock options.  The stock options and SARs generally become exercisable over a three- or four-year vesting period, with the specific terms of vesting determined at the time of grant based on guidelines established by the Compensation Committee of the Board of Directors.  The stock options and SARs expire over terms not to exceed 10 years from the date of grant, 90 days after termination of employment, 90 days or one year after permanent disability, depending on the plan, or one year after the death of the optionee.  The stock options and SARs are granted with a strike price equal to the fair market value at the time of grant, which is defined in the 2004 Plan as the closing price on the NYSE on the date of grant.

Holders of non-performance-based restricted stock awards have the rights and privileges of owning the shares (including voting rights) except that the holders are not entitled to delivery of a portion thereof until certain requirements are met.  Beginning in 2014, non-performance-based restricted stock awards granted by the Company provide the holders with forfeitable dividend rights until the award vests. Non-performance-based restricted stock awards vest over three-to-four-year vesting periods, with the specific terms of vesting determined at the time of grant.

Annually, the Board of Directors grants performance-based equity awards to officers of Denbury.  These performance-based awards generally vest over 1.25 to 3.25 years, and the number of performance-based shares earned (and eligible to vest) during the performance period will depend upon two sets of factors: (1) our level of success in achieving specifically identified performance targets ("Performance-Based Operational Awards") and (2) performance of our stock relative to that of a designated peer group ("Performance-Based TSR Awards").  Generally, one-half of the maximum number of shares that could be earned under the performance-based awards will be earned for performance at the designated target levels (100% target vesting levels) or upon any earlier change of control, and twice the target number of shares will be earned if the maximum target levels are met.  If performance is below the designated minimum levels for all performance targets, no performance-based shares will be earned.  Performance-Based Operational Awards are valued using the fair market value of Denbury stock on the grant date, and Performance-Based TSR Awards are valued using a Monte Carlo simulation.

Stock-based compensation expense associated with our field employees is included in "Lease operating expenses," while such expense associated with non-field employees is included in "General and administrative expenses" in the Consolidated Statements of Operations.  Stock-based compensation associated with our employees involved in exploration and drilling activities is capitalized as part of "Oil and natural gas properties" in the Consolidated Balance Sheets.

Stock-based compensation costs for the years ended December 31, 2014, 2013 and 2012, are as follows:

	Year Ended December 31,
In thousands	2014		2013		2012
Stock-based compensation expensed
General and administrative expenses	$	27,789	$	30,429	$	26,463
Lease operating expenses	2,724		2,574		2,847
Total stock-based compensation expensed	30,513		33,003		29,310
Stock-based compensation capitalized	9,019		9,088		8,587
Total cost of stock-based compensation arrangements	$	39,532	$	42,091	$	37,897
Income tax benefit recognized for stock-based compensation arrangements	$	11,595	$	12,541	$	11,284

Stock Options and SARs

The fair value of each SAR award is estimated on the date of grant using the Black-Scholes option pricing model with the assumptions noted in the following table.  The risk-free rate for periods within the contractual life of the SAR is based on the U.S. Treasury yield curve in effect at the time of grant.  The expected life of SARs granted was derived from examination of our historical SAR grants and subsequent exercises.  The contractual terms (cliff vesting and graded vesting) are evaluated separately for the expected life, as the exercise behavior for each is different.  Expected volatilities are based on the historical volatility of our common stock.

	Year Ended December 31,
	2014			2013			2012
Weighted average fair value of SARs granted	$	3.55		$	6.72		$	8.90
Risk-free interest rate	1.31		%	0.67		%	0.79		%
Expected life	3.8 to 4.0 years			3.6 to 4.8 years			4.0 to 5.0 years
Expected volatility	38.0		%	50.4		%	64.9		%
Dividend yield	3.10		%	—		%	—		%

The following is a summary of our stock option and SAR activity:

	Number of Awards		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2013	8,986,915		$	16.00
Granted	555,786		14.60
Exercised	(1,612,822	)	10.23
Forfeited	(136,493	)	17.03
Expired	(324,653	)	21.02
Outstanding at December 31, 2014	7,468,733		16.90		2.8	$	178
Exercisable at end of period	5,846,933		$	17.05	2.2	$	74

The following is a summary of the total intrinsic value of stock options and SARs exercised and grant-date fair value of stock options and SARs vested:

	Year Ended December 31,
In thousands	2014		2013		2012
Intrinsic value of stock options and SARs exercised	$	7,985	$	17,287	$	17,315
Grant-date fair value of stock options and SARs vested	9,998		12,852		26,391

As of December 31, 2014, there was $3.5 million of total compensation cost to be recognized in future periods related to nonvested share-based SAR compensation arrangements.  The cost is expected to be recognized over a weighted-average period of 1.6 years.  The following is a summary of cash received from stock option exercises under share-based payment arrangements and tax benefits realized from the exercises of stock options and SARs:

	Year Ended December 31,
In thousands	2014		2013		2012
Cash received from stock option exercises	$	7,022	$	5,487	$	6,022
Tax benefit realized for the exercises of stock options and SARs	212		437		458

Restricted Stock – 2004 Plan

As of December 31, 2014, there was $27.7 million of unrecognized compensation expense related to nonvested non-performance-based restricted stock grants.  This unrecognized compensation cost is expected to be recognized over a weighted-average period of 1.8 years.  The following is a summary of the total vesting date fair value of non-performance-based restricted stock under the 2004 Plan:

	Year Ended December 31,
In thousands	2014		2013		2012
Fair value of restricted stock vested	$	24,780	$	21,529	$	22,332

A summary of the status of our nonvested non-performance-based restricted stock grants issued under our 2004 Plan and the changes during the year ended December 31, 2014, is presented below:

	Number of Shares		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	3,761,084		$	15.98
Granted	2,001,148		16.34
Vested	(1,512,407	)	16.91
Forfeited	(510,791	)	13.27
Nonvested at December 31, 2014	3,739,034		16.17

Restricted Stock – Legacy Encore Plan

In February 2010, prior to the consummation of the merger with Encore, Encore issued a restricted stock grant to its employees under the Encore Acquisition Company 2008 Incentive Stock Plan ("Encore Plan").  At the time of the merger with Encore, the shares were converted into shares of Denbury restricted stock.  The shares vest ratably over a four-year graded vesting period; however, legacy Encore employees who terminated their employment for Good Reason, as defined by Encore's legacy Employee Severance Protection Plan, automatically vested in their awards upon termination.  The remaining nonvested restricted stock issued under the Encore Plan vested during the first quarter of 2014. The following is a summary of the total vesting date fair value of restricted stock under the Encore Plan:

	Year Ended December 31,
In thousands	2014		2013		2012
Fair value of restricted stock vested	$	340	$	512	$	584

A summary of the status of the vested restricted stock grants under the Encore Plan and the changes during the year ended December 31, 2014, is presented below:

	Number of Shares		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	21,741		$	15.43
Vested	(21,078	)	15.43
Forfeited	(663	)	15.43
Nonvested at December 31, 2014	—		—

Performance-Based Equity Awards

During 2014 and 2013, we granted Performance-Based Operational Awards and Performance-Based TSR Awards to our officers. As of December 31, 2014, there was $5.3 million of unrecognized compensation expense related to nonvested performance-based equity awards.  This unrecognized compensation cost is expected to be recognized over a weighted-average period of 1.9 years.  The range of assumptions used in the Monte Carlo simulation valuation approach for Performance-Based TSR Awards (presented at the target level) are as follows:

	Year Ended December 31,
	2014			2013			2012
Weighted average fair value of Performance-Based TSR Awards granted	$	19.81		$	20.08		$	24.68
Risk-free interest rate	0.80		%	0.41		%	0.42		%
Expected life	3.0 years			3.0 years			2.8 years
Expected volatility	39.4		%	42.3		%	45.2		%
Dividend yield	2.50		%	—		%	—		%

A summary of the status of the nonvested performance-based equity awards (presented at the target level) during the year ended December 31, 2014, is as follows:

	Performance-Based Operational Awards				Performance-Based TSR Awards
	Number of Awards		Weighted Average Grant-Date Fair Value		Number of Awards		Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2013	209,474		$	16.77	296,391		$	21.43
Granted	275,870		16.55		275,870		19.81
Forfeited	(33,946	)	16.64		(38,650	)	20.50
Nonvested at December 31, 2014	451,398		16.65		533,611		20.66

The following is a summary of the total vesting date fair value of performance-based equity awards:

	Year Ended December 31,
In thousands	2014		2013		2012
Vesting date fair value of Performance-Based Operational Awards	$	—	$	2,541	$	2,191

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Fair Value Measurements (Details Textuals) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sensitivity Analysis of Fair Value, Impact of 1 Percent Increase or Decrease in Level 3 Inputs	$ 1,400,000
Other Asset Impairment Charges	0	0	17,515,000
Debt, Fair Value	2,938,600,000	2,957,900,000
Investment Impairment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Asset Impairment Charges	$ 15,100,000

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Supplemental Cash Flow Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Supplemental Cash Flow Information [Abstract]
Cash paid for interest, expensed	$ 185,140,000	$ 117,442,000		$ 137,950,000
Cash paid for interest, capitalized	24,202,000	79,253,000		77,432,000
Cash paid for income taxes	5,033,000	28,895,000		99,194,000
Cash received from income tax refunds	(13,193,000)	(17,087,000)		(38,004,000)
Noncash investing activities
Increase in asset retirement obligations	6,500,000	26,946,000		56,290,000
Increase (decrease) in liabilities for capital expenditures	215,000	(18,321,000)		(26,882,000)
Increase in restricted cash	0	0		1,262,559,000	[1]
Decrease in restricted cash	0	1,050,328,000	[2]	212,544,000	[2]
Non-core Gulf Coast Assets [Member]
Business Acquisition [Line Items]
Sales proceeds paid to qualified intermediary		212,500,000
Bakken Exchange Transaction [Member]
Business Acquisition [Line Items]
Sales proceeds paid to qualified intermediary		$ 1,050,000,000

[1] During 2012, $212.5 million of proceeds from the sale of certain non-core assets in the Gulf Coast Region and $1.05 billion of the cash proceeds from the Bakken Exchange Transaction were paid by the respective purchaser directly to a qualified intermediary to facilitate a like-kind-exchange transaction for federal income tax purposes.

[2] During 2012 and 2013, proceeds from the sales of our oil and natural gas property dispositions in 2012, which were held by a qualified intermediary, were released in 2012 to fund the Thompson Field acquisition and in 2013 primarily to fund a portion of the CCA acquisition and certain post-closing costs under the Bakken Exchange Transaction.

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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues and other income
Oil, natural gas, and related product sales	$ 2,372,473	$ 2,466,234	$ 2,409,867
CO2 and helium sales and transportation fees	44,643	27,950	26,453
Interest income and other income	18,089	22,943	20,152
Total revenues and other income	2,435,205	2,517,127	2,456,472
Expenses
Lease operating expenses	647,559	730,574	532,359
Marketing and plant operating expenses	64,379	49,246	52,836
CO2 and helium discovery and operating expenses	25,222	16,916	14,694
Taxes other than income	169,701	176,231	160,016
General and administrative expenses	158,343	145,211	144,019
Interest, net of amounts capitalized of $24,202, $79,253 and $77,432, respectively	183,003	140,709	153,581
Depletion, depreciation, and amortization	592,972	509,943	507,538
Commodity derivatives expense (income)	(555,255)	41,024	(4,834)
Loss on early extinguishment of debt	113,908	44,651	0
Impairment of assets	0	0	17,515
Other expenses	12,816	20,242	21,891
Total expenses	1,412,648	1,874,747	1,599,615
Income before income taxes	1,022,557	642,380	856,857
Income tax provision	387,066	232,783	331,497
Net Income	$ 635,491	$ 409,597	$ 525,360
Net income per common share
Basic	$ 1.82	$ 1.12	$ 1.36
Diluted	$ 1.81	$ 1.11	$ 1.35
Dividends declared per common share	$ 0.25	$ 0	$ 0
Weighted average common shares outstanding
Basic	348,962	366,659	385,205
Diluted	351,167	369,877	388,938

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Acquisition

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

Acquisition

Note 2. Acquisition

Fair Value

The FASC Fair Value Measurement topic defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (often referred to as the "exit price"). The fair value measurement is based on the assumptions of market participants and not those of the reporting entity. Therefore, entity-specific intentions do not impact the measurement of fair value unless those assumptions are consistent with market participant views.

The fair value of oil and natural gas properties is based on significant inputs not observable in the market, which the FASC Fair Value Measurement topic defines as Level 3 inputs.  Key assumptions may include (1) NYMEX oil and natural gas futures prices (this input is observable); (2) dollar-per-acre values of recent sale transactions (this input is observable); (3) projections of the estimated quantities of oil and natural gas reserves, including those classified as proved, probable and possible; (4) estimated oil and natural gas pricing differentials; (5) projections of future rates of production; (6) timing and amount of future development and operating costs; (7) projected costs of CO₂ (to a market participant); (8) projected reserve recovery factors; and (9) risk-adjusted discount rates.

2013 Acquisition

On March 27, 2013, we acquired producing assets in the Cedar Creek Anticline ("CCA") of Montana and North Dakota from a wholly-owned subsidiary of ConocoPhillips for $1.0 billion after final closing adjustments. This acquisition was not reflected as an Investing Activity on our Consolidated Statement of Cash Flows for the year ended December 31, 2013 due to the movement of the cash used to acquire these assets through a qualified intermediary to facilitate a like-kind-exchange treatment under federal income tax rules. This acquisition meets the definition of a business under the FASC Business Combinations topic. The fair value of assets acquired and liabilities assumed in this acquisition have been finalized, and no adjustments have been made to fair value amounts previously disclosed in our financial statements for the year ended December 31, 2013. The following table presents a summary of the fair value of assets acquired and liabilities assumed in the CCA acquisition:

In thousands
Consideration
Cash consideration (1)	$	1,001,707
Fair value of assets acquired and liabilities assumed
Oil and natural gas properties
Proved properties	783,507
Unevaluated properties	222,820
Other assets	2,589
Asset retirement obligations	(7,209		)
	$	1,001,707

(1) See Note 6, Income Taxes, for additional information regarding the like-kind-exchange transaction utilized to fund this purchase and Note 13, Supplemental Cash Flow Information, for supplemental cash flow information regarding the cash payment.

For the period from March 27, 2013, to December 31, 2013, we recognized $268.3 million of oil, natural gas, and related product sales from the property interests acquired in the CCA acquisition; during that same period, we recognized $194.2 million of net field operating income (defined as oil, natural gas, and related product sales less lease operating expenses, production and ad valorem taxes, and marketing expenses) related to the CCA acquisition.

Unaudited Pro Forma Acquisition Information.  The following combined pro forma total revenues and other income and net income are presented as if the previously discussed CCA acquisition had occurred on January 1, 2013:

	Year Ended
In thousands, except per-share data	December 31, 2013
Pro forma total revenues and other income	$	2,599,301
Pro forma net income	439,801
Pro forma net income per common share
Basic	$	1.20
Diluted	1.19

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Significant Accounting Policies

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

Note 1. Significant Accounting Policies

Organization and Nature of Operations

Denbury Resources Inc., a Delaware corporation, is an independent oil and natural gas company with operations focused in two key operating areas: the Gulf Coast and Rocky Mountain regions. Our goal is to increase the value of our properties through a combination of exploitation, drilling and proven engineering extraction practices, with the most significant emphasis relating to CO₂ enhanced oil recovery operations.

Principles of Reporting and Consolidation

The consolidated financial statements herein have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and include the accounts of Denbury and entities in which we hold a controlling financial interest.  Undivided interests in oil and gas joint ventures are consolidated on a proportionate basis.  All intercompany balances and transactions have been eliminated.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amount of certain assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during each reporting period.  Management believes its estimates and assumptions are reasonable; however, such estimates and assumptions are subject to a number of risks and uncertainties that may cause actual results to differ materially from such estimates.  Significant estimates underlying these financial statements include (1) the fair value of financial derivative instruments; (2) the estimated quantities of proved oil and natural gas reserves used to compute depletion of oil and natural gas properties, the related present value of estimated future net cash flows therefrom and the ceiling test; (3) future net cash flow estimates used in the impairment assessment of goodwill and long-lived assets; (4) the estimated quantities of proved and probable CO₂ reserves used to compute depletion of CO₂ properties; (5) accruals related to oil and natural gas sales volumes and revenues, capital expenditures and lease operating expenses; (6) the estimated costs and timing of future asset retirement obligations; (7) estimates made in the calculation of income taxes; and (8) estimates made in determining the fair values for purchase price allocations, including goodwill.  While management is not aware of any significant revisions to any of its estimates, there will likely be future revisions to its estimates resulting from matters such as revisions in estimated oil and natural gas volumes, changes in ownership interests, payouts, joint venture audits, re-allocations by purchasers or pipelines, or other corrections and adjustments common in the oil and natural gas industry, many of which require retroactive application.  These types of adjustments cannot be currently estimated and will be recorded in the period in which the adjustment occurs.

Cash Equivalents

We consider all highly liquid investments to be cash equivalents if they have maturities of three months or less at the date of purchase.

Oil and Natural Gas Properties

Capitalized Costs.  We follow the full cost method of accounting for oil and natural gas properties.  Under this method, all costs related to the acquisition, exploration and development of oil and natural gas reserves are capitalized and accumulated in a single cost center representing our activities, which are undertaken exclusively in the United States.  Such costs include lease acquisition costs, geological and geophysical expenditures, lease rentals on undeveloped properties, costs of drilling both productive and nonproductive wells, capitalized interest on qualifying projects, and general and administrative expenses directly related to exploration and development activities, and do not include any costs related to production, general corporate overhead or similar activities.  We assign the purchase price of oil and natural gas properties we acquire to proved and unevaluated properties based on the estimated fair values as defined in the Financial Accounting Standards Board Codification ("FASC") Fair Value Measurement topic.  Proceeds received from disposals are credited against accumulated costs except when the sale represents a significant disposal of reserves, in which case a gain or loss would be recognized. A disposal of 25% or more of our proved reserves would be considered significant.

Depletion and Depreciation.  The costs capitalized, including production equipment and future development costs, are depleted or depreciated using the unit-of-production method, based on proved oil and natural gas reserves as determined by independent petroleum engineers.  Oil and natural gas reserves are converted to equivalent units on a basis of 6,000 cubic feet of natural gas to one barrel of crude oil.

Under full cost accounting, we may exclude certain unevaluated costs from the amortization base pending determination of whether proved reserves can be assigned to such properties.  The costs classified as unevaluated are transferred to the full cost amortization base as the properties are developed, tested and evaluated.

Ceiling Test. The net capitalized costs of oil and natural gas properties are limited to the lower of unamortized cost or the cost center ceiling.  The cost center ceiling is defined as (1) the present value of estimated future net revenues from proved oil and natural gas reserves before future abandonment costs (discounted at 10%), based on the average first-day-of-the-month oil and natural gas price for each month during a 12-month rolling period prior to the end of a particular reporting period; plus (2) the cost of properties not being amortized; plus (3) the lower of cost or estimated fair value of unproved properties included in the costs being amortized, if any; less (4) related income tax effects.  Our future net revenues from proved oil and natural gas reserves are not reduced for development costs related to the cost of drilling for and developing CO₂ reserves nor those related to the cost of constructing CO₂ pipelines, as those costs have previously been incurred by the Company.  Therefore, we include in the ceiling test, as a reduction of future net revenues, that portion of our capitalized CO₂ costs related to CO₂ reserves and CO₂ pipelines that we estimate will be consumed in the process of producing our proved oil and natural gas reserves.  The fair value of our oil and natural gas derivative contracts is not included in the ceiling test, as we do not designate these contracts as hedge instruments for accounting purposes.  The cost center ceiling test is prepared quarterly.  We did not have a ceiling test write-down during the years ended December 31, 2014, 2013 or 2012. If oil and natural gas prices were to remain at or near late 2014 and early 2015 levels in subsequent periods, which are significantly lower than our 2014 average first-day-of-the-month oil and natural gas prices, we would likely begin recording write-downs due to the full cost ceiling test in the first or second quarter of 2015, and also in subsequent quarterly periods if prices remain low.

Joint Interest Operations.  Substantially all of our oil and natural gas exploration and production activities are conducted jointly with others.  These financial statements reflect only our proportionate interest in such activities, and any amounts due from other partners are included in trade receivables.

Tertiary Injection Costs.  Our tertiary operations are conducted in reservoirs that have already produced significant amounts of oil over many years; however, in accordance with the SEC rules and regulations for recording proved reserves, we cannot recognize proved reserves associated with enhanced recovery techniques, such as CO₂ injection, until we can demonstrate production resulting from the tertiary process or unless the field is analogous to an existing flood.  

We capitalize, as a development cost, injection costs in fields that are in their development stage, which means we have not yet seen incremental oil production due to the CO₂ injections (i.e., a production response).  These capitalized development costs are included in our unevaluated property costs if there are not already proved tertiary reserves in that field.  After we see a production response to the CO₂ injections (i.e., the production stage), injection costs are expensed as incurred, and once proved reserves are recognized, previously deferred unevaluated development costs become subject to depletion.

CO₂ Properties

We own and produce CO₂ reserves, a non-hydrocarbon resource, that are used in our tertiary oil recovery operations on our own behalf and on behalf of other interest owners in enhanced recovery fields, with a portion sold to third-party industrial users.  We record revenue from our sales of CO₂ to third parties when it is produced and sold.  Expenses related to the production of CO₂ are allocated between volumes sold to third parties and volumes consumed internally that are directly related to our tertiary production.  The expenses related to third-party sales are recorded in "CO₂ and helium discovery and operating expenses," and the expenses related to internal use are recorded in "Lease operating expenses" in the Consolidated Statements of Operations or are capitalized as oil and gas properties in our Consolidated Balance Sheets, depending on the stage of the tertiary flood that is receiving the CO₂ (see Tertiary Injection Costs above for further discussion).

Costs incurred to search for CO₂ are expensed as incurred until proved or probable reserves are established.  Once proved or probable reserves are established, costs incurred to obtain those reserves are capitalized and classified as "CO₂ properties" on our Consolidated Balance Sheets.  Capitalized CO₂ costs are aggregated by geologic formation and depleted on a unit-of-production basis over proved and probable reserves.

We own certain interests in the Riley Ridge Federal Unit in Wyoming ("Riley Ridge"), which contains helium and CO₂ reserves (non-hydrocarbon resources) as well as natural gas reserves (a hydrocarbon resource).  It is not possible to separately identify the capitalized costs related to the development of each product in the commingled gas stream; thus, these costs are allocated to each product based on the relative future revenue value of each product line and classified accordingly on the Consolidated Balance Sheets.

Pipelines and Plants

CO₂ used in our tertiary floods is transported to our fields through CO₂ pipelines.  Costs of CO₂ pipelines under construction are not depreciated until the pipelines are placed into service.  Pipelines are depreciated on a straight-line basis over their estimated useful lives, which range from 15 to 50 years.

Pipelines and plants include the Riley Ridge gas processing facility in southwestern Wyoming. Individual components of the Riley Ridge gas processing facility are depreciated on a straight-line basis over their estimated useful lives, which range from 20 to 50 years.

Property and Equipment – Other

Other property and equipment, which includes furniture and fixtures, vehicles, computer equipment and software, and capitalized leases, is depreciated principally on a straight-line basis over each asset's estimated useful life.  Vehicles and furniture and fixtures are generally depreciated over a useful life of five to ten years, and computer equipment and software are generally depreciated over a useful life of three to five years.  Leasehold improvements are amortized over the shorter of the estimated useful life or the remaining lease term.

Leased property meeting certain capital lease criteria is capitalized, and the present value of the related lease payments is recorded as a liability.  Amortization of capitalized leased assets is computed using the straight-line method over the shorter of the estimated useful life or the initial lease term.

Maintenance and repair costs that do not extend the useful life of the property or equipment are charged to expense as incurred.

Goodwill and Other Intangible Assets

Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in the acquisition of a business. Goodwill is not amortized; rather, it is tested for impairment annually during the fourth quarter and when events or changes in circumstances indicate that it is more likely than not the fair value of a reporting unit with goodwill has been reduced below its carrying value. The impairment test requires allocating goodwill and other assets and liabilities to reporting units.  However, we have only one reporting unit.  To assess impairment, we have the option to qualitatively assess if it is more likely than not that the fair value of the reporting unit is less than the carrying value.  Absent a qualitative assessment, or, through the qualitative assessment, if we determine it is more likely than not that the fair value of the reporting unit is less than the carrying value, a quantitative assessment is prepared to calculate the fair market value of the reporting unit.  If it is determined that the fair value of the reporting unit is less than the carrying value, the recorded goodwill is impaired to its implied fair value with a charge to operating expense.  We performed our goodwill impairment assessment as of December 31, 2014. Because our enterprise value (combined market capitalization plus a control premium of 10% and the fair value of our long-term debt) was below the book value of our stockholders' equity and long-term debt as of December 31, 2014, we were required to proceed to step two of the goodwill impairment test.

In the step two quantitative assessment, we assigned the fair value of the reporting unit (enterprise value) to its assets and liabilities and calculated the implied fair value of goodwill as the excess of fair value of the reporting unit over the amounts assigned to the assets and liabilities. Oil and natural gas reserves, which represent the most significant assets requiring valuation, were estimated using the expected present value of future net cash flows method based on December 31, 2014, NYMEX oil and natural gas futures prices for the next five years, adjusted for current price differentials. In addition to future oil and natural gas pricing, the most significant assumptions impacting the projections of future net cash flows include projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs, projected availability and cost of CO₂, risk adjustment factors applied to probable and possible oil and natural gas reserve cash flows, projected recovery factors of oil and natural gas reserves, and a weighted-average cost of capital discount rate applied to all cash flows. The implied fair value of goodwill calculated in this quantitative assessment significantly exceeded the corresponding book value of goodwill. Therefore, we did not record any goodwill impairment during 2014, nor have we recorded a goodwill impairment historically.

Our intangible assets subject to amortization primarily consist of amounts assigned in purchase accounting to helium production rights at Riley Ridge and a CO₂ purchase contract with ConocoPhillips to offtake CO₂ from the Lost Cabin gas plant in Wyoming and are included in our Consolidated Balance Sheets under the caption "Other assets." We amortize our helium production rights on a unit-of-production basis over the life of the estimated helium reserves and amortize the CO₂ contract intangible asset on a straight-line basis over the contract term. Total amortization expense related to these assets was $2.3 million and $1.3 million during the years ended December 31, 2014 and 2013, respectively. The following table summarizes the carrying values of our intangible assets as of December 31, 2014 and 2013:

In thousands	Helium Production Rights			CO2 Purchase Contract			Total
December 31, 2014
Intangible asset value	$	55,266		$	34,341		$	89,607
Accumulated amortization	(15		)	(3,625		)	(3,640		)
Net book value as of December 31, 2014	$	55,251		$	30,716		$	85,967
December 31, 2013
Intangible asset value	$	55,266		$	33,931		$	89,197
Accumulated amortization	—			(1,319		)	(1,319		)
Net book value as of December 31, 2013	$	55,266		$	32,612		$	87,878

At December 31, 2014, our estimated amortization expense for our intangible assets subject to amortization over the next five years is as follows:

In thousands
2015	$	2,289
2016	2,488
2017	2,788
2018	2,858
2019	2,833

Impairment Assessment of Long-Lived Assets

The portion of our capitalized CO₂ costs related to CO₂ reserves, CO₂ pipelines, and the Riley Ridge gas processing facility that we estimate will be consumed in the process of producing our proved oil and natural gas reserves is included in the full cost pool ceiling test as a reduction to future net revenues.  The remaining net capitalized costs that are not included in the full cost pool ceiling test, and related intangible assets, are subject to long-lived asset impairment testing whenever events or changes in circumstances indicate that the carrying value may not be recoverable.

We perform our long-lived asset impairment test by comparing the net carrying costs of our two long-lived asset groups ((1) Gulf Coast region and (2) Rocky Mountain region) to the respective expected future undiscounted net cash flows that are supported by these long-lived assets which include (1) the production of our probable and possible oil and natural gas reserves and (2) the sale of non-hydrocarbons (CO₂ and helium) to third parties. If the undiscounted net cash flows are below the net carrying costs for an asset group, we must record an impairment loss by the amount, if any, that net carrying costs exceed the fair value of the long-lived asset group.

Given the significant decline in oil prices in the fourth quarter of 2014, we performed a long-lived asset impairment test for both asset groups. Significant assumptions impacting expected future undiscounted net cash flows include projections of future oil and natural gas prices, projections of estimated quantities of oil and natural gas reserves, projections of future rates of production, timing and amount of future development and operating costs, projected availability and cost of CO₂, projected recovery factors of tertiary reserves and risk-adjustment factors applied to the cash flows. The undiscounted net cash flows for our asset groups significantly exceeded the net carrying costs; thus, step two of the impairment test was not required and no impairment was recorded.

Asset Retirement Obligations

In general, our future asset retirement obligations relate to future costs associated with plugging and abandoning our oil, natural gas and CO₂ wells, removing equipment and facilities from leased acreage, and returning land to its original condition.  The fair value of a liability for an asset retirement obligation is recorded in the period in which it is incurred, discounted to its present value using our credit-adjusted-risk-free interest rate, and a corresponding amount capitalized by increasing the carrying amount of the related long-lived asset.  The liability is accreted each period, and the capitalized cost is depreciated over the useful life of the related asset.  Revisions to estimated retirement obligations will result in an adjustment to the related capitalized asset and corresponding liability.  If the liability for an oil or natural gas well is settled for an amount other than the recorded amount, the difference is recorded to the full cost pool, unless significant.

Asset retirement obligations are estimated at the present value of expected future net cash flows.  We utilize unobservable inputs in the estimation of asset retirement obligations that include, but are not limited to, costs of labor and materials, profits on costs of labor and materials, the effect of inflation on estimated costs, and the discount rate.  Accordingly, asset retirement obligations are considered a Level 3 measurement under the FASC Fair Value Measurement topic.

Commodity Derivative Contracts

We utilize oil and natural gas derivative contracts to mitigate our exposure to commodity price risk associated with our future oil and natural gas production.  These derivative contracts have historically consisted of options, in the form of price floors, collars or three-way collars, fixed-price swaps and fixed-price swaps enhanced with a sold put.  Our derivative financial instruments are recorded on the balance sheet as either an asset or a liability measured at fair value.  We do not apply hedge accounting to our commodity derivative contracts; accordingly, changes in the fair value of these instruments are recognized in our Consolidated Statements of Operations in the period of change.

Concentrations of Credit Risk

Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash equivalents, trade and accrued production receivables, and the derivative instruments discussed above.  Our cash equivalents represent high-quality securities placed with various investment-grade institutions.  This investment practice limits our exposure to concentrations of credit risk.  Our trade and accrued production receivables are dispersed among various customers and purchasers; therefore, concentrations of credit risk are limited.  We evaluate the credit ratings of our purchasers, and if customers are considered a credit risk, letters of credit are the primary security obtained to support lines of credit.  We attempt to minimize our credit risk exposure to the counterparties of our oil and natural gas derivative contracts through formal credit policies, monitoring procedures and diversification.  All of our derivative contracts are with parties that are lenders under our bank credit facility (or affiliates of such lenders).  There are no margin requirements with the counterparties of our derivative contracts.

Oil and natural gas sales are made on a day-to-day basis or under short-term contracts at the current area market price.  We would not expect the loss of any purchaser to have a material adverse effect upon our operations.  For the year ended December 31, 2014, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (31%), Plains Marketing LP (13%), and ConocoPhillips (12%). For the year ended December 31,2013, three purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (33%), Plains Marketing LP (15%), and Eighty-Eight Oil LLC (10%). For the year ended December 31,2012, two purchasers accounted for 10% or more of our oil and natural gas revenues: Marathon Petroleum Company (39%) and Plains Marketing LP (17%).

Revenue Recognition

Revenue Recognition. Revenue is recognized at the time oil and natural gas is produced and sold.  Any amounts due from purchasers of oil and natural gas are included in accrued production receivable.

We follow the sales method of accounting for our oil and natural gas revenue, whereby we recognize revenue on oil or natural gas sold to our purchasers regardless of whether the sales are proportionate to our ownership in the property.  A receivable or liability is recognized only to the extent that we have an imbalance on a specific property greater than the expected remaining proved reserves.  As of December 31, 2014 and 2013, our aggregate oil and natural gas imbalances were not material to our consolidated financial statements.

We recognize revenue and expenses of purchased producing properties at the time we assume effective control, commencing from either the closing or purchase agreement date, depending on the underlying terms and agreements.  We follow the same methodology in reverse when we sell properties by recognizing revenue and expenses of the sold properties until the closing date.

Income Taxes

Income taxes are accounted for using the asset and liability method, under which deferred income taxes are recognized for the future tax effects of temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities using the enacted statutory tax rates in effect at year end.  The effect on deferred taxes for a change in tax rates is recognized in income in the period that includes the enactment date.  A valuation allowance for deferred tax assets is recorded when it is more likely than not that the benefit from the deferred tax asset will not be realized.

We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained upon examination by the taxing authorities, based on the technical merits of the position.  The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement.

Net Income Per Common Share

Basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period.  Diluted net income per common share is calculated in the same manner, but includes the impact of potentially dilutive securities. Potentially dilutive securities consist of stock options, stock appreciation rights ("SARs"), nonvested restricted stock and nonvested performance-based equity awards. For each of the three years in the period ended December 31, 2014, there were no adjustments to net income for purposes of calculating basic and diluted net income per common share.

The following is a reconciliation of the weighted average shares used in the basic and diluted net income per common share calculations for the periods indicated:

	Year Ended December 31,
In thousands	2014	2013	2012
Basic weighted average common shares outstanding	348,962	366,659	385,205
Potentially dilutive securities
Restricted stock, stock options, SARs and performance-based equity awards	2,205	3,218	3,733
Diluted weighted average common shares outstanding	351,167	369,877	388,938

Basic weighted average common shares exclude shares of nonvested restricted stock. As these restricted shares vest, they will be included in the shares outstanding used to calculate basic net income per common share (although all non-performance-based restricted stock is issued and outstanding upon grant).  For purposes of calculating diluted weighted average common shares, the nonvested restricted stock, stock options, SARs, and performance-based equity awards are included in the computation using the treasury stock method, with the deemed proceeds equal to the average unrecognized compensation during the period, the purchase price that the grantee will pay in the future for stock options, and any estimated future tax consequences recognized directly in equity. Stock options and SARs of 4.8 million, 3.6 million and 4.1 million shares for the years ended December 31, 2014, 2013 and 2012, respectively, could potentially dilute earnings per share in the future, but were excluded from the computation of diluted net income per share as their effect would have been antidilutive.

Environmental and Litigation Contingencies

The Company makes judgments and estimates in recording liabilities for contingencies such as environmental remediation or ongoing litigation.  Liabilities are recorded when it is both probable that a loss has been incurred and such loss is reasonably estimable.  Assessments of liabilities are based on information obtained from independent and in-house experts, loss experience in similar situations, actual costs incurred, and other case-by-case factors.  Any related insurance recoveries are recognized in our financial statements during the period received or at the time receipt is determined to be virtually certain.

Recent Accounting Pronouncements

Revenue Recognition. In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). ASU 2014-09 amends the guidance for revenue recognition to replace numerous, industry-specific requirements. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The ASU implements a five-step process for customer contract revenue recognition that focuses on transfer of control, as opposed to transfer of risk and rewards. The amendment also requires enhanced disclosures regarding the nature, amount, timing and uncertainty of revenues and cash flows arising from contracts with customers. The amendments in this ASU are effective for reporting periods beginning after December 15, 2016, and early adoption is prohibited. Entities can transition to the standard either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. Management is currently assessing the impact the adoption of ASU 2014-09 will have on our consolidated financial statements.

Discontinued Operations. In April 2014, the FASB issued ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity ("ASU 2014-08"). ASU 2014-08 amends the definition of a discontinued operation under the Discontinued Operations subtopic of the FASC and requires entities to disclose additional information about discontinued operations and disposal transactions that do not meet the discontinued operations criteria. ASU 2014-08 will be applied prospectively for disposals of components of an entity and businesses or nonprofit activities that meet the criteria to be classified as held for sale and occur within annual periods beginning on or after December 15, 2014, and interim periods within those years. The adoption of ASU 2014-08 is currently not expected to have a material effect on our consolidated financial statements.

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Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Information [Abstract]

Cash Flow, Supplemental Disclosure

Note 13. Supplemental Cash Flow Information

Supplemental Cash Flow Information

	Year Ended December 31,
In thousands	2014			2013			2012
Supplemental cash flow information
Cash paid for interest, expensed	$	185,140		$	117,442		$	137,950
Cash paid for interest, capitalized	24,202			79,253			77,432
Cash paid for income taxes	5,033			28,895			99,194
Cash received from income tax refunds	(13,193		)	(17,087		)	(38,004		)
Noncash investing activities
Increase in asset retirement obligations	6,500			26,946			56,290
Increase (decrease) in liabilities for capital expenditures	215			(18,321		)	(26,882		)
Increase in restricted cash (1)	—			—			1,262,559
Decrease in restricted cash (2)	—			1,050,328			212,544

(1) During 2012, $212.5 million of proceeds from the sale of certain non-core assets in the Gulf Coast Region and $1.05 billion of the cash proceeds from the Bakken Exchange Transaction were paid by the respective purchaser directly to a qualified intermediary to facilitate a like-kind-exchange transaction for federal income tax purposes.

(2) During 2012 and 2013, proceeds from the sales of our oil and natural gas property dispositions in 2012, which were held by a qualified intermediary, were released in 2012 to fund the Thompson Field acquisition and in 2013 primarily to fund a portion of the CCA acquisition and certain post-closing costs under the Bakken Exchange Transaction.

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Commodity Derivative Contracts

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Commodity Derivative Contracts

Note 9. Commodity Derivative Contracts

We do not apply hedge accounting treatment to our oil and natural gas derivative contracts; therefore, the changes in the fair values of these instruments are recognized in income in the period of change.  These fair value changes, along with the settlements of expired contracts, are shown under "Commodity derivatives expense (income)" in our Consolidated Statements of Operations.

From time to time, we enter into various oil and natural gas derivative contracts to provide an economic hedge of our exposure to commodity price risk associated with anticipated future oil and natural gas production.  We do not hold or issue derivative financial instruments for trading purposes.  These contracts have historically consisted of price floors, collars, three-way collars, fixed-price swaps, and fixed-price swaps enhanced with a sold put.  The production that we hedge has varied from year to year depending on our levels of debt and financial strength and expectation of future commodity prices.  For the past several years, we have employed a strategy to hedge a substantial portion of our forecasted production approximately 18 months to two years in the future (from the then-current quarter), as we believe it is important to protect our future cash flow to provide a level of assurance for our capital spending and dividends in those future periods. With the decline in commodity futures prices in late 2014 and early 2015, as of late February 2015, we have deferred entering into new oil derivative contracts since the third quarter of 2014. Therefore, as of February 19, 2015, the percentage of our forecasted oil production that is currently hedged for the fourth quarter of 2015 and calendar 2016 is less than the percentage hedged in recent years. During periods of lower oil prices, we may defer entering into new contracts until futures prices return to levels that we consider economically conducive to our doing so.

We manage and control market and counterparty credit risk through established internal control procedures that are reviewed on an ongoing basis. We attempt to minimize credit risk exposure to counterparties through formal credit policies, monitoring procedures, and diversification, and all of our commodity derivative contracts are with parties that are lenders under our Bank Credit Agreement (or affiliates of such lenders). As of December 31, 2014, all of our outstanding derivative contracts were subject to enforceable master netting arrangements whereby payables on those contracts can be offset against receivables from separate derivative contracts with the same counterparty. It is our policy to classify derivative assets and liabilities on a gross basis on our balance sheets, even if the contracts are subject to enforceable master netting arrangements.

The following table summarizes our commodity derivative contracts, none of which are classified as hedging instruments in accordance with the FASC Derivatives and Hedging topic:

Months	Index Price	Volume (2)	Contract Prices (1)
			Range (3)				Weighted Average Price
							Swap		Sold Put		Floor		Ceiling
Oil Contracts:
2015 Enhanced Swaps(4)
Jan – Mar	NYMEX	14,000	$	90.00	–	90.30	$	90.06	$	65.21	$	—	$	—
Jan – Mar	LLS	16,000		93.20	–	94.00	93.63		68.00		—		—
Apr – June	NYMEX	8,000		90.00	–	90.00	90.00		65.75		—		—
Apr – June	LLS	16,000		93.20	–	94.00	93.65		68.00		—		—
July – Sept	NYMEX	10,000		90.00	–	90.10	90.02		65.30		—		—
July – Sept	LLS	16,000		93.20	–	94.00	93.65		68.00		—		—
Oct – Dec	NYMEX	12,000		91.15	–	94.00	92.42		68.00		—		—
Oct – Dec	LLS	8,000		93.80	–	96.50	94.94		68.00		—		—
2015 Collars
Jan – Mar	NYMEX	24,000	$	80.00	–	100.90	$	—	$	—	$	80.00	$	96.75
Jan – Mar	LLS	4,000		85.00	–	102.20	—		—		85.00		102.10
Apr – June	NYMEX	30,000		80.00	–	95.25	—		—		80.00		94.72
Apr – June	LLS	4,000		85.00	–	102.50	—		—		85.00		101.75
July – Sept	NYMEX	28,000		80.00	–	95.25	—		—		80.00		95.05
July – Sept	LLS	4,000		85.00	–	100.00	—		—		85.00		99.50
2015 Three-Way Collars(5)
Oct – Dec	NYMEX	10,000	$	85.00	–	102.00	$	—	$	68.00	$	85.00	$	99.00
Oct – Dec	LLS	8,000		88.00	–	104.25	—		68.00		88.00		100.99
2016 Enhanced Swaps(4)
Jan – Mar	NYMEX	12,000	$	90.65	–	93.35	$	92.43	$	68.00	$	—	$	—
Jan – Mar	LLS	8,000		93.70	–	95.45	94.81		68.50		—		—
Apr – June	NYMEX	2,000		90.35	–	90.35	90.35		68.00		—		—
Apr – June	LLS	6,000		93.30	–	93.50	93.38		70.00		—		—
2016 Three-Way Collars(5)
Jan – Mar	NYMEX	10,000	$	85.00	–	101.25	$	—	$	68.00	$	85.00	$	99.85
Jan – Mar	LLS	6,000		88.00	–	103.15	—		68.00		88.00		102.10
Apr – June	NYMEX	2,000		85.00	–	95.50	—		68.00		85.00		95.50
Apr – June	LLS	2,000		88.00	–	98.25	—		70.00		88.00		98.25
Natural Gas Contracts:
2015 Collars
Jan – Dec	NYMEX	8,000	$	4.00	–	4.53	$	—	$	—	$	4.00	$	4.51

(1) Contract prices are stated in $/Bbl and $/MMBtu for oil and natural gas contracts, respectively.

(2) Contract volumes are stated in Bbls/d and MMBtus/d for oil and natural gas contracts, respectively.

(3) Ranges presented for enhanced swaps represent the lowest and highest fixed prices of all open contracts for the period presented. For collars and three-way collars, ranges represent the lowest floor price and highest ceiling price for all open contracts for the period presented.

(4) An enhanced swap is a fixed-price swap contract combined with a sold put feature (at a lower price) with the same counterparty. The value associated with the sold put is used to increase or enhance the fixed price of the swap. At the contract settlement date, (1) if the index price is higher than the swap price, we pay the counterparty the difference between the index price and swap price for the contracted volumes, (2) if the index price is lower than the swap price but at or above the sold put price, the counterparty pays us the difference between the index price and the swap price for the contracted volumes, and (3) if the index price is lower than the sold put price, the counterparty pays us the difference between the swap price and the sold put price for the contracted volumes.

(5) A three-way collar is a costless collar contract combined with a sold put feature (at a lower price) with the same counterparty. The value received for the sold put is used to enhance the contracted floor and ceiling price of the related collar. At the contract settlement date, (1) if the index price is higher than the ceiling price, we pay the counterparty the difference between the index price and ceiling price for the contracted volumes, (2) if the index price is between the floor and ceiling price, no settlements occur, (3) if the index price is lower than the floor price but at or above the sold put price, the counterparty pays us the difference between the index price and the floor price for the contracted volumes, and (4) if the index price is lower than the sold put price, the counterparty pays us the difference between the floor price and the sold put price for the contracted volumes.

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Commitments and Contingencies (Leases) (Details Textuals 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Leases, Operating [Abstract]
Description of lease terms (in years)	11 years
Expected future receipts under sublease agreements	$ 12.4

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Long-Term Debt

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Long-Term Debt

Note 5. Long-Term Debt

The following long-term debt and capital lease obligations were outstanding as of December 31, 2014 and 2013:

	December 31,
In thousands	2014			2013
Bank Credit Agreement	$	395,000		$	340,000
8¼% Senior Subordinated Notes due 2020	—			996,273
6⅜% Senior Subordinated Notes due 2021	400,000			400,000
5½% Senior Subordinated Notes due 2022	1,250,000			—
4⅝% Senior Subordinated Notes due 2023	1,200,000			1,200,000
Other Senior Subordinated Notes, including premium of $11 and $16, respectively	2,746			3,823
Pipeline financings	220,583			228,167
Capital lease obligations	103,041			128,519
Total	3,571,370			3,296,782
Less: current obligations	(35,470		)	(36,157		)
Long-term debt and capital lease obligations	$	3,535,900		$	3,260,625

The ultimate parent company in our corporate structure, Denbury Resources Inc. ("DRI"), is the sole issuer of all of our outstanding senior subordinated notes.  DRI has no independent assets or operations.  Each of the subsidiary guarantors of such notes is 100% owned, directly or indirectly, by DRI, and the guarantees of such notes are full and unconditional and joint and several; any subsidiaries of DRI that are not subsidiary guarantors of such notes are minor subsidiaries.

Bank Credit Facility

In December 2014, we entered into an Amended and Restated Credit Agreement with JPMorgan Chase Bank, N.A. ("JPMorgan"), as administrative agent, and other lenders party thereto (the "Bank Credit Agreement") to replace our previous credit agreement that was set to mature in May 2016 (the "Previous Bank Credit Agreement"). The Bank Credit Agreement is a senior secured revolving credit facility with an initial borrowing base of $3.0 billion and aggregate lender commitments of $1.6 billion, and reduces our borrowing costs on the drawn spread. The $1.6 billion of aggregate lender commitments is consistent with the Previous Bank Credit Agreement and may be increased up to the borrowing base amount with approval and incremental commitments from the existing lenders or new lenders. Additionally, under the Bank Credit Agreement, letters of credit are available in an aggregate amount not to exceed $50 million, and short-term swingline loans are available in an aggregate amount not to exceed $25 million, each subject to the available commitments under the Bank Credit Agreement. Availability under the Bank Credit Agreement is subject to a borrowing base, which is redetermined annually beginning May 1, 2015. The borrowing base is adjusted at the lenders' discretion and is based, in part, upon external factors over which we have no control (including approval by the lenders party to the Bank Credit Agreement). The lenders may also reduce the borrowing base if between scheduled annual redeterminations we sell borrowing base properties and/or cancel commodity derivative positions with an aggregate value in excess of 10% of the then-effective borrowing base. If our outstanding debt under the Bank Credit Agreement exceeds the then-effective borrowing base, we would be required to repay the excess amount over a period not to exceed six months. Loans under the Bank Credit Agreement mature in December 2019.

Our obligations under the Bank Credit Agreement are guaranteed jointly and severally by each subsidiary of DRI that is 100% owned, directly or indirectly, by DRI. In addition, the Bank Credit Agreement is secured by (1) a significant portion of our proved oil and natural gas properties, which are held through its restricted subsidiaries; (2) the pledge of equity interests of such subsidiaries; and (3) a pledge of commodity derivative agreements of DRI and such subsidiaries (as applicable).

The Bank Credit Agreement contains several restrictive covenants including, among others:

• a requirement to maintain a maximum permitted ratio of consolidated total net debt to consolidated EBITDAX (as defined in the Bank Credit Agreement) of DRI and its wholly-owned subsidiaries of not more than 4.25 to 1.0;

• a requirement to maintain a current ratio, as determined under the Bank Credit Agreement, of not less than 1.0 to 1.0; and

• a limit on our ability to, among other things, incur indebtedness; grant liens; engage in certain mergers, consolidations, liquidations and dissolutions; engage in sales of assets; make acquisitions and investments; make distributions and dividends; and enter into commodity derivative agreements, in each case subject to customary exceptions.

As of December 31, 2014, we were in compliance with all debt covenants under the Bank Credit Agreement. Under the Bank Credit Agreement, we are permitted to make unlimited distributions in the form of repurchases of Denbury common stock and payments of cash dividends on Denbury common stock, provided that (1) prior to and after making any such distribution, no event of default exists and (2) we have minimum availability of at least 10% of the "loan limit" under the Bank Credit Agreement (currently the aggregate lender commitments of $1.6 billion) on the date such distribution is made (calculated on a pro forma basis after giving effect to the making of any such distribution).

Loans under the Bank Credit Agreement are subject to varying rates of interest based on either (1) for ABR Loans, a base rate determined under the Bank Credit Agreement (the "ABR") plus an applicable margin ranging from 0.25% to 1.25% per annum, or (2) for LIBOR Loans, the LIBOR rate plus an applicable margin ranging from 1.25% to 2.25% per annum (capitalized terms as defined in the Bank Credit Agreement).  The weighted average interest rate on borrowings outstanding as of December 31, 2014 under the Bank Credit Agreement was 1.9%. The undrawn portion of the aggregate lender commitments under the Bank Credit Agreement is subject to a commitment fee ranging from 0.3% to 0.375% per annum.

Senior Subordinated Notes

2014 Repurchase and Redemption of 8¼% Senior Subordinated Notes due 2020. On April 30, 2014, we completed a cash tender offer for our 8¼% Senior Subordinated Notes due 2020 (the "8¼% Notes") and purchased a total of $815.2 million principal amount of these notes. We received sufficient consents in the solicitation to amend the indenture governing the 8¼% Notes by entering into a supplemental indenture, which eliminated most of the restrictive covenants and certain events of default. The purchase under this tender offer was funded by a portion of the proceeds from the issuance of our 5½% Notes (defined below). On April 30, 2014, we issued a notice of redemption and fully funded the redemption of all of the remaining outstanding 8¼% Notes ($181.1 million principal amount) at an amount equal to 100% of their principal amount plus the required make-whole premium and accrued interest up to, but excluding, the May 30, 2014, redemption date, resulting in a satisfaction and discharge of the indenture for the 8¼% Notes.

We recognized a $113.9 million loss associated with the debt repurchases during the second quarter of 2014, which loss consists of both premium payments made to repurchase or redeem the 8¼% Notes and the elimination of unamortized debt issuance costs related to these notes. The loss is included in our Consolidated Statements of Operations under the caption "Loss on early extinguishment of debt," and premium payments made to repurchase the notes are classified as a financing cash outflow on our Consolidated Statements of Cash Flows under the caption "Premium paid on repayment of senior subordinated notes."

6⅜% Senior Subordinated Notes due 2021. In February 2011, we issued $400 million of 6⅜% Senior Subordinated Notes due 2021 (the "6⅜% Notes").  The 6⅜% Notes, which bear interest at a rate of 6.375% per annum, were sold at par.

The 6⅜% Notes mature on August 15, 2021, and interest is payable on February 15 and August 15 of each year.  We may redeem the 6⅜% Notes in whole or in part at our option beginning August 15, 2016, at a redemption price of 103.188% of the principal amount, and at declining redemption prices thereafter, as specified in the indenture. Prior to August 15, 2016, we may redeem 100% of the principal amount of the 6⅜% Notes at a price equal to 100% of the principal amount plus a "make-whole" premium and accrued and unpaid interest.  The 6⅜% Notes are not subject to any sinking fund requirements.

5½% Senior Subordinated Notes due 2022. In April 2014, we issued $1.25 billion of 5½% Senior Subordinated Notes due 2022 (the "5½% Notes"). The 5½% Notes, which bear interest at a rate of 5.5% per annum, were sold at par. The net proceeds, after issuance costs, of $1.23 billion were used to repurchase or redeem our outstanding 8¼% Notes, which were issued in 2010 (see 2014 Repurchase and Redemption of 8¼% Senior Subordinated Notes due 2020 above), and to pay down a portion of outstanding borrowings under our Previous Bank Credit Agreement.

The 5½% Notes mature on May 1, 2022, and interest is payable on May 1 and November 1 of each year. We may redeem the 5½% Notes in whole or in part at our option beginning May 1, 2017, at a redemption price of 104.125% of the principal amount, and at declining redemption prices thereafter, as specified in the indenture. Prior to May 1, 2017, we may at our option redeem up to an aggregate of 35% of the principal amount of the 5½% Notes at a price of 105.5% of par with the proceeds of certain equity offerings. In addition, at any time prior to May 1, 2017, we may redeem 100% of the principal amount of the 5½% Notes at a price equal to 100% of the principal amounts plus a "make-whole" premium and accrued and unpaid interest. The 5½% Notes are not subject to any sinking fund requirements.

4⅝% Senior Subordinated Notes due 2023. In February 2013, we issued $1.2 billion of 4⅝% Senior Subordinated Notes due 2023 (the "4⅝% Notes"). The 4⅝% Notes, which bear interest at a rate of 4.625% per annum, were sold at par. The net proceeds, after issuance costs, of $1.18 billion were used to repurchase or redeem our 9½% Senior Subordinated Notes due 2016 (the "9½% Notes") and 9¾% Senior Subordinated Notes due 2016 (the "9¾% Notes") (see 2013 Repurchase and Redemption of 9½% Notes and 9¾% Notes below) and to pay down a portion of outstanding borrowings under our Previous Bank Credit Agreement.

The 4⅝% Notes mature on July 15, 2023, and interest is payable on January 15 and July 15 of each year. We may redeem the 4⅝% Notes in whole or in part at our option beginning January 15, 2018, at a redemption price of 102.313% of the principal amount, and at declining redemption prices thereafter, as specified in the indenture. Prior to January 15, 2016, we may at our option redeem up to an aggregate of 35% of the principal amount of the 4⅝% Notes at a redemption price of 104.625% of par with the proceeds of certain equity offerings. In addition, at any time prior to January 15, 2018, we may redeem 100% of the principal amount of the 4⅝% Notes at a redemption price equal to 100% of the principal amount plus a "make-whole" premium and accrued and unpaid interest. The 4⅝% Notes are not subject to any sinking fund requirements.

Restrictive Covenants in Indentures for Senior Subordinated Notes. Each of the indentures for the 6⅜% Notes, 5½% Notes and 4⅝% Notes contains certain covenants that are generally consistent and that restrict our ability and the ability of our restricted subsidiaries to take or permit certain actions, including restrictions on our ability and the ability of our restricted subsidiaries to (1) incur additional debt; (2) make investments; (3) create liens on our assets or the assets of our restricted subsidiaries; (4) create restrictions on the ability of our restricted subsidiaries to pay dividends or make other payments to DRI or other restricted subsidiaries; (5) engage in transactions with our affiliates; (6) transfer or sell assets or subsidiary stock; (7) consolidate, merge or transfer all or substantially all of our assets and the assets of our restricted subsidiaries; and (8) make restricted payments (which includes paying dividends on our common stock or redeeming, repurchasing or retiring such stock or subordinated debt), provided that the restricted payments covenant in the indentures for the 5½% and 4⅝% Notes (the "5½% and 4⅝% Indentures") permits us in certain circumstances to make unlimited restricted payments so long as we maintain a ratio of total debt to EBITDA (both as defined in the 5½% and 4⅝% Indentures) of at least 2.5 to 1.0 (both before and after giving effect to any restricted payment), although we will not be able to realize the practical benefit of the restricted payment covenant flexibility in the 5½% and 4⅝% Indentures until the 6⅜% Notes have been redeemed or retired. As of December 31, 2014, we were in compliance with all debt covenants under the indentures related to our senior subordinated notes.

2013 Repurchase and Redemption of 9½% Notes and 9¾% Notes. Pursuant to cash tender offers, during 2013, we repurchased $426.4 million in principal of our 9¾% Notes and $224.9 million in principal of our 9½% Notes. We recognized a $44.7 million loss during the year ended December 31, 2013, associated with the debt repurchases, consisting of both premium payments made to repurchase or redeem the 9½% Notes and 9¾% Notes and the elimination of unamortized debt issuance costs, discounts and premiums related to these notes. The loss is included in our Consolidated Statements of Operations under the caption "Loss on early extinguishment of debt," and premium payments made to repurchase the notes are classified as a financing cash outflow on our Consolidated Statements of Cash Flows under the caption "Premium paid on repayment of senior subordinated notes."

Pipeline Financings

In May 2008, we closed two transactions with Genesis Energy, L.P. ("Genesis") involving two of our pipelines.  The NEJD Pipeline system included a 20-year financing lease, and the Free State Pipeline included a long-term transportation service agreement.  These transactions are both accounted for as financing leases.

Debt Issuance Costs

In connection with the issuance of our outstanding long-term debt, we have incurred debt issuance costs, which are being amortized to interest expense using the straight line or effective interest method over the term of each related facility or borrowing.  Remaining unamortized debt issuance costs were $57.3 million and $58.9 million at December 31, 2014 and 2013, respectively.  These balances are included in "Other assets" in our Consolidated Balance Sheets.

Indebtedness Repayment Schedule

At December 31, 2014, our indebtedness, including our capital and financing lease obligations but excluding the discount and premium on our senior subordinated debt, is payable over the next five years and thereafter as follows:

In thousands
2015	$	35,470
2016	38,517
2017	37,087
2018	33,885
2019	422,879
Thereafter	3,003,521
Total indebtedness	$	3,571,359

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Stockholders' Equity (Share Repurchases Table) (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended			39 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Equity, Class of Treasury Stock [Line Items]
Total amount repurchased	$ 200,369	$ 277,768	$ 266,657	$ 940,021
Weighted average price per share	$ 16.16	$ 16.87	$ 15.71	$ 15.68
Denbury common stock repurchased (shares)	12,398	16,469	16,978	59,957

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Asset Retirement Obligations

12 Months Ended

Dec. 31, 2014

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

Note 3. Asset Retirement Obligations

The following table summarizes the changes in our asset retirement obligations for the years ended December 31, 2014 and 2013:

	Year Ended December 31,
In thousands	2014			2013
Beginning asset retirement obligations	$	126,301		$	106,430
Liabilities incurred and assumed during period	7,798			22,216
Revisions in estimated retirement obligations	(1,298		)	4,730
Liabilities settled and sold during period	(13,576		)	(15,523		)
Accretion expense	8,870			8,448
Ending asset retirement obligations	128,095			126,301
Less: current asset retirement obligations (1)	(1,684		)	(6,413		)
Long-term asset retirement obligations	$	126,411		$	119,888

(1) Included in "Accounts payable and accrued liabilities" in our Consolidated Balance Sheets.

Liabilities incurred during 2014 and 2013 generally relate to the drilling of incremental wells, and liabilities assumed during 2013 include the purchase of additional interests in the CCA.

We have escrow accounts that are legally restricted for certain of our asset retirement obligations.  The balances of these escrow accounts were $37.1 million and $36.0 million at December 31, 2014 and 2013, respectively.  These balances are primarily invested in U.S. Treasury bonds, are recorded at amortized cost and are included in "Other assets" in our Consolidated Balance Sheets.  The carrying value of these investments approximates their estimated fair market value at December 31, 2014 and 2013.

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Property and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

Note 4. Property and Equipment

The following table presents a summary of our net property and equipment balances as of December 31, 2014 and 2013:

	December 31,
In thousands	2014			2013
Oil and natural gas properties
Proved properties	$	9,782,337		$	8,945,326
Unevaluated properties	918,406			780,481
Total	10,700,743			9,725,807
Accumulated depletion and depreciation	(3,679,883		)	(3,219,500		)
Net oil and natural gas properties	7,020,860			6,506,307
CO2 properties
CO2 properties	1,162,538			1,117,167
Accumulated depletion and depreciation	(183,646		)	(150,968		)
Net CO2 properties	978,892			966,199
Pipelines and plants
CO2 pipelines (1)	1,733,562			1,681,774
Plants	536,002			527,786
Total	2,269,564			2,209,560
Accumulated depletion and depreciation	(182,385		)	(134,697		)
Net plants and pipelines	2,087,179			2,074,863
Other property and equipment
Other property and equipment	468,051			466,969
Accumulated depletion and depreciation	(202,738		)	(163,060		)
Net other property and equipment	265,313			303,909
Net property and equipment	$	10,352,244		$	9,851,278

(1) Amount includes $98.5 million of CO₂ pipelines at December 31, 2014 that were under construction and not subject to depreciation during 2014.

A summary of the unevaluated property costs excluded from oil and natural gas properties being amortized at December 31, 2014, and the year in which the costs were incurred follows:

	December 31, 2014
	Costs Incurred During:
In thousands	2014		2013		2012		2011 and Prior		Total
Property acquisition costs	$	6,500	$	215,822	$	102,377	$	329,840	$	654,539
Exploration and development	125,783		40,835		22,080		10,361		199,059
Capitalized interest	21,807		24,898		12,084		6,019		64,808
Total	$	154,090	$	281,555	$	136,541	$	346,220	$	918,406

Our 2013 property acquisition costs were primarily related to the fair value allocated to the purchase of additional interests in the CCA. Our 2012 property acquisition costs were primarily related to the fair value allocated to our Hartzog Draw and Thompson fields.  Property acquisition costs for 2011 and prior were primarily related to the fair value allocated to CO₂ tertiary potential at our CCA properties, acquired as part of the merger with Encore Acquisition Company ("Encore"), as well as CO₂ tertiary potential at Conroe Field. Exploration and development costs shown as unevaluated properties are primarily associated with our tertiary oil fields that are under development but did not have proved reserves at December 31, 2014.  The most significant development costs incurred during 2014 relate to development in preparation for the CO₂ floods at Webster and Grieve fields, with the more significant development costs incurred during 2013, 2012 and 2011 relating to development in preparation for the CO₂ flood at Grieve field. We have not yet recognized proved reserves in these fields.

Costs are transferred into the amortization base on an ongoing basis as projects are evaluated and proved reserves established or impairment determined.  We review the excluded properties for impairment at least annually.  We currently estimate that evaluation of the majority of these properties and the inclusion of their costs in the amortization base is expected to be completed withinfivetotenyears.  Until we are able to determine whether there are any proved reserves attributable to the above costs, we are not able to assess the future impact on the amortization rate of the full cost pool.

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Income Taxes

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Taxes

Note 6. Income Taxes

Our income tax provision (benefit) is as follows:

	Year Ended December 31,
In thousands	2014			2013			2012
Current income tax expense (benefit)
Federal	$	(42,500	)	$	393		$	57,720
State	(407		)	9,864			18,034
Total current income tax expense (benefit)	(42,907		)	10,257			75,754
Deferred income tax expense (benefit)
Federal	400,544			222,559			239,862
State	29,429			(33		)	15,881
Total deferred income tax expense	429,973			222,526			255,743
Total income tax expense	$	387,066		$	232,783		$	331,497

At December 31, 2014, we had tax-effected federal net operating loss carryforwards ("NOLs") totaling $44.1 million, state NOLs totaling $43.3 million, an estimated $42.8 million of enhanced oil recovery credits to carry forward related to our tertiary operations, and $34.8 million of alternative minimum tax credits.  Our state NOLs expire in various years, starting in 2020, although most do not begin to expire until 2024. Our enhanced oil recovery credits will begin to expire in 2024.

At December 31, 2014, we had $13.5 million of excess tax benefits related to stock-based compensation that were not recorded as an increase to additional paid-in capital in the period that the stock award vested and/or was exercised. At the time these excess tax benefits reduce current taxes payable and, thus, are deemed to be realized by the Company, a corresponding increase to additional paid-in capital will be recognized.

Deferred income taxes reflect the available tax carryforwards and the temporary differences based on tax laws and statutory rates in effect at the December 31, 2014 and 2013 balance sheet dates.  We believe that we will be able to realize all of our deferred tax assets at December 31, 2014, and, therefore, have provided no valuation allowance against our deferred tax assets.

For federal income tax purposes, we structured the 2012 divestitures of our Bakken area assets and certain non-core assets as like-kind-exchange transactions for interests acquired in Thompson, Webster, Hartzog Draw and LaBarge fields in 2012 and the CCA acquisition in 2013 (see Note 2, Acquisition), thereby deferring the majority of the taxable gain on those divestitures. The higher level of current taxes during 2012 is primarily due to the taxable gain recognized in the late-2012 sale and exchange transaction with Exxon Mobil Corporation and its wholly-owned subsidiary XTO Energy Inc. (the "Bakken Exchange Transaction") that we were unable to defer through a like-kind-exchange transaction.

Significant components of our deferred tax assets and liabilities as of December 31, 2014 and 2013 are as follows:

	December 31,
In thousands	2014			2013
Deferred tax assets
Loss carryforwards – federal	$	44,076		$	20,247
Loss carryforwards – state	43,270			41,379
Tax credit carryover	34,837			34,837
Derivative contracts	—			21,341
Enhanced oil recovery credit carryforwards	42,817			14,974
Stock-based compensation	29,994			34,635
Other	32,656			37,679
Total deferred tax assets	227,650			205,092
Deferred tax liabilities
Property and equipment	(2,806,850		)	(2,541,426		)
Derivative contracts	(185,385		)	—
Other	(11,984		)	(10,206		)
Total deferred tax liabilities	(3,004,219		)	(2,551,632		)
Total net deferred tax liability	$	(2,776,569	)	$	(2,346,540	)

Our reconciliation of income tax expense computed by applying the U.S. federal statutory rate and the reported effective tax rate on income from continuing operations is as follows:

	Year Ended December 31,
In thousands	2014			2013			2012
Income tax provision calculated using the federal statutory income tax rate	$	357,895		$	224,833		$	299,900
State income taxes, net of federal income tax benefit	25,368			13,518			30,955
Effect of statutory rate change	4,225			(4,178		)	(429		)
Other	(422		)	(1,390		)	1,071
Total income tax expense	$	387,066		$	232,783		$	331,497

We file consolidated and separate income tax returns in the U.S. federal jurisdiction and in many state jurisdictions.  The statutes of limitation for our income tax returns for tax years ending prior to 2011 have lapsed and therefore are not available for examination by respective taxing authorities. We have not paid any significant interest or penalties associated with our income taxes.

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Stock Compensation Plans (Summary of Stock Option and SARs Activity) (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Share-based Arrangements with Employees and Nonemployees [Abstract]
Number of awards outstanding at December 31, 2013	8,986,915
Weighted average exercise price, December 31, 2013	$ 16.00
Number of awards, granted	555,786
Weighted average exercise price, granted	$ 14.60
Number of awards, exercised	(1,612,822)
Weighted average exercise price, exercised	$ 10.23
Number of awards, forfeited	(136,493)
Weighted average exercise price, forfeited	$ 17.03
Number of awards, expired	(324,653)
Weighted average exercise price, expired	$ 21.02
Number of awards outstanding at December 31, 2014	7,468,733
Weighted average exercise price, December 31, 2014	$ 16.90
Weighted average remaining contractual life of outstanding stock option and SARs	2 years 9 months
Aggregate intrinsic value of stock option and SARs outstanding	$ 178
Exercisable at end of period	5,846,933
Weighted average price, exercisable at end of period	$ 17.05
Weighted average remaining contractual life of exercisable stock option and SARs	2 years 2 months
Aggregate intrinsic value of exercisable options and SARs	$ 74

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Commitments and Contingencies (Commitments) (Details Textuals 2) (USD $)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Material tax assessments	$ 0
Industrial-source CO2 [Member]
Long-term Purchase Commitment [Line Items]
Term of long-term purchase commitments (years)	17 years
Oil price assumption for obligation estimate ($/Bbl)	60
Industrial-source CO2 [Member] | Minimum [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase obligation of CO2	47,000,000
Industrial-source CO2 [Member] | Maximum [Member]
Long-term Purchase Commitment [Line Items]
Aggregate purchase obligation of CO2	67,000,000
CO2 Volumetric production payments and industrial CO2 customers [Member]
Long-term Purchase Commitment [Line Items]
Significant supply commitment remaining volume committed (MMcf)	273,000
Term of long-term supply arrangement (years)	14 years
Significant supply commitment yearly maximum volume required (MMcf/d)	74
Helium Supply Arrangement [Member]
Long-term Purchase Commitment [Line Items]
Term of long-term supply arrangement (years)	20 years
Maximum annual payment in event of shortfall	8,000,000
Maximum payment in event of shortfall	$ 46,000,000

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Stock Compensation Plans (Summary of Cash Received and Tax Benefit Realized) (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options [Abstract]
Cash received from stock option exercises	$ 7,022	$ 5,487	$ 6,022
Tax benefit realized for the exercises of stock options and SARs	$ 212	$ 437	$ 458

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Stock Compensation Plans (Summary of SAR Assumptions) (Details 2) (Stock Options and Stock Appreciation Rights (SARs) [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of SARs granted	$ 3.55	$ 6.72	$ 8.90
Risk-free interest rate	1.31%	0.67%	0.79%
Expected volatility	38.00%	50.40%	64.90%
Dividend yield	3.10%	0.00%	0.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	3 years 9 months	3 years 7 months	4 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	4 years	4 years 9 months	5 years

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Commodity Derivative Contracts (Tables)

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Commodity derivative contracts not classified as hedging instruments

The following table summarizes our commodity derivative contracts, none of which are classified as hedging instruments in accordance with the FASC Derivatives and Hedging topic:

Months	Index Price	Volume (2)	Contract Prices (1)
			Range (3)				Weighted Average Price
							Swap		Sold Put		Floor		Ceiling
Oil Contracts:
2015 Enhanced Swaps(4)
Jan – Mar	NYMEX	14,000	$	90.00	–	90.30	$	90.06	$	65.21	$	—	$	—
Jan – Mar	LLS	16,000		93.20	–	94.00	93.63		68.00		—		—
Apr – June	NYMEX	8,000		90.00	–	90.00	90.00		65.75		—		—
Apr – June	LLS	16,000		93.20	–	94.00	93.65		68.00		—		—
July – Sept	NYMEX	10,000		90.00	–	90.10	90.02		65.30		—		—
July – Sept	LLS	16,000		93.20	–	94.00	93.65		68.00		—		—
Oct – Dec	NYMEX	12,000		91.15	–	94.00	92.42		68.00		—		—
Oct – Dec	LLS	8,000		93.80	–	96.50	94.94		68.00		—		—
2015 Collars
Jan – Mar	NYMEX	24,000	$	80.00	–	100.90	$	—	$	—	$	80.00	$	96.75
Jan – Mar	LLS	4,000		85.00	–	102.20	—		—		85.00		102.10
Apr – June	NYMEX	30,000		80.00	–	95.25	—		—		80.00		94.72
Apr – June	LLS	4,000		85.00	–	102.50	—		—		85.00		101.75
July – Sept	NYMEX	28,000		80.00	–	95.25	—		—		80.00		95.05
July – Sept	LLS	4,000		85.00	–	100.00	—		—		85.00		99.50
2015 Three-Way Collars(5)
Oct – Dec	NYMEX	10,000	$	85.00	–	102.00	$	—	$	68.00	$	85.00	$	99.00
Oct – Dec	LLS	8,000		88.00	–	104.25	—		68.00		88.00		100.99
2016 Enhanced Swaps(4)
Jan – Mar	NYMEX	12,000	$	90.65	–	93.35	$	92.43	$	68.00	$	—	$	—
Jan – Mar	LLS	8,000		93.70	–	95.45	94.81		68.50		—		—
Apr – June	NYMEX	2,000		90.35	–	90.35	90.35		68.00		—		—
Apr – June	LLS	6,000		93.30	–	93.50	93.38		70.00		—		—
2016 Three-Way Collars(5)
Jan – Mar	NYMEX	10,000	$	85.00	–	101.25	$	—	$	68.00	$	85.00	$	99.85
Jan – Mar	LLS	6,000		88.00	–	103.15	—		68.00		88.00		102.10
Apr – June	NYMEX	2,000		85.00	–	95.50	—		68.00		85.00		95.50
Apr – June	LLS	2,000		88.00	–	98.25	—		70.00		88.00		98.25
Natural Gas Contracts:
2015 Collars
Jan – Dec	NYMEX	8,000	$	4.00	–	4.53	$	—	$	—	$	4.00	$	4.51

(1) Contract prices are stated in $/Bbl and $/MMBtu for oil and natural gas contracts, respectively.

(2) Contract volumes are stated in Bbls/d and MMBtus/d for oil and natural gas contracts, respectively.

(3) Ranges presented for enhanced swaps represent the lowest and highest fixed prices of all open contracts for the period presented. For collars and three-way collars, ranges represent the lowest floor price and highest ceiling price for all open contracts for the period presented.

(4) An enhanced swap is a fixed-price swap contract combined with a sold put feature (at a lower price) with the same counterparty. The value associated with the sold put is used to increase or enhance the fixed price of the swap. At the contract settlement date, (1) if the index price is higher than the swap price, we pay the counterparty the difference between the index price and swap price for the contracted volumes, (2) if the index price is lower than the swap price but at or above the sold put price, the counterparty pays us the difference between the index price and the swap price for the contracted volumes, and (3) if the index price is lower than the sold put price, the counterparty pays us the difference between the swap price and the sold put price for the contracted volumes.

(5) A three-way collar is a costless collar contract combined with a sold put feature (at a lower price) with the same counterparty. The value received for the sold put is used to enhance the contracted floor and ceiling price of the related collar. At the contract settlement date, (1) if the index price is higher than the ceiling price, we pay the counterparty the difference between the index price and ceiling price for the contracted volumes, (2) if the index price is between the floor and ceiling price, no settlements occur, (3) if the index price is lower than the floor price but at or above the sold put price, the counterparty pays us the difference between the index price and the floor price for the contracted volumes, and (4) if the index price is lower than the sold put price, the counterparty pays us the difference between the floor price and the sold put price for the contracted volumes.

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Property and Equipment (Details Textuals)	12 Months Ended
	Dec. 31, 2014
Minimum [Member]
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Anticipated Timing of Inclusion of Costs in Amortization Calculation	5 years
Maximum [Member]
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items]
Anticipated Timing of Inclusion of Costs in Amortization Calculation	10 years

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 11. Commitments and Contingencies

Leases

We lease office space, equipment and vehicles that have non-cancelable lease terms.  Currently, our outstanding leases have terms up to 11 years.  We have subleased part of the office space included in our operating leases for which we received rental payments. The following table summarizes operating lease payments paid and sublease rentals received during the periods indicated:

	Year Ended December 31,
In thousands	2014		2013		2012
Operating lease payments	$	43,333	$	37,211	$	33,606
Sublease rental receipts	2,347		2,237		2,685

The following tables summarize by year the remaining non-cancelable future payments under our leases as of December 31, 2014:

In thousands	Pipeline and Capital Leases
2015	$	61,225
2016	61,906
2017	56,072
2018	53,083
2019	44,960
Thereafter	237,473
Total minimum lease payments	514,719
Less: Amount representing interest	(191,095		)
Present value of minimum lease payments	$	323,624

In thousands	Operating Leases
2015	$	12,556
2016	12,532
2017	12,774
2018	12,730
2019	11,203
Thereafter	56,630
Total minimum lease payments	$	118,425

In addition, we expect to receive approximately $12.4 million for 2015 through 2019 under our sublease agreements.

Commitments

We have entered into long-term commitments to purchase CO₂ that are either non-cancelable or cancelable only upon the occurrence of specified future events.  The commitments continue for up to 17 years.  The price we will pay for CO₂ generally varies depending on the amount of CO₂ delivered and the price of oil.  Once all commitments have commenced (currently expected in 2016), our annual commitment under these contracts could range from $47 million to $67 million per year, assuming a $60 per Bbl NYMEX oil price.

We are party to long-term contracts that require us to deliver CO₂ to our industrial CO₂ customers at various contracted prices, plus we have a CO₂ delivery obligation to Genesis related to two CO₂ volumetric production payments ("VPPs"). Based upon the maximum amounts deliverable as stated in the industrial contracts and the VPPs, we estimate that we may be obligated to deliver up to 273 Bcf of CO₂ to these customers over the next 14 years. The maximum volume required in any given year is approximately 74 MMcf/d, which we judge to be minor given the size of our Jackson Dome proven CO₂ reserves at December 31, 2014, our current production capabilities and our projected levels of CO₂ usage for our own tertiary flooding program.

In conjunction with the August 2011 Riley Ridge acquisition, we assumed the 20-year helium supply contract under which the original participants in Riley Ridge agreed to supply helium to a third-party purchaser.  After the commencement date, the contract provides for the delivery of a minimum contracted quantity of helium, subject to adjustment after startup of the Riley Ridge gas processing facility, which, if not supplied in accordance with the terms of the contract, may obligate us to compensate the third-party helium purchaser for the amount of the shortfall in an amount not to exceed $8.0 million per year, or $46.0 million over the term of the contract.

Delhi Field Release

In June 2013, a release of well fluids, consisting of a mixture of carbon dioxide, saltwater, natural gas and oil, was discovered (and reported) within an area of the Denbury-operated Delhi Field located in northern Louisiana.  We completed our remediation efforts with respect to such release during the fourth quarter of 2013; however, we continue to monitor the impacted area to confirm the effectiveness of the remediation efforts. During the years ended December 31, 2014 and 2013, we recorded $16.8 million and $114.0 million, respectively, of lease operating expenses related to this release and its remediation in our Consolidated Statements of Operations, which brings our total cost estimate to date with respect to these expenses to $130.8 million, of which we have paid $112.6 million. The $16.8 million of additional charges in 2014 primarily consist of our actual or estimated expenses related to third-party property and commercial damage claims that have been settled or asserted in connection with the release, which are expected to be recoverable under our insurance policies.

We maintain insurance policies to cover certain costs, damages and claims related to releases of well fluids and remediation. We received a $25.0 million cost reimbursement ($23.9 million net to Denbury) in October 2014 related to the Delhi Field release and remediation from our insurance carrier providing the first layer of our excess insurance coverage, representing approximately 20% of our total incident costs through year-end 2014. The insurance reimbursement was recognized as a reduction to lease operating expenses in our Consolidated Statement of Operations for the year ended December 31, 2014. We have not reached any agreement with our remaining carriers as to further reimbursements, but given our belief that under our policies we are entitled to reimbursement of between approximately one-third and two-thirds of our total costs, we have filed suit to pursue further reimbursements, the ultimate outcome of which cannot be predicted.

Litigation

We are involved in various lawsuits, claims and regulatory proceedings incidental to our businesses.  While we currently believe that the ultimate outcome of these proceedings, individually and in the aggregate, will not have a material adverse effect on our financial position, results of operations or cash flows, litigation is subject to inherent uncertainties.  If an unfavorable ruling were to occur, there exists the possibility of a material adverse impact on our net income in the period in which the ruling occurs.  We provide accruals of probable losses for litigation and claims if we determine that a loss is probable and the amount can be reasonably estimated.

Other Contingencies

We are subject to audits for various taxes (income, sales and use, and severance) in the various states in which we operate, and from time to time receive assessments for potential taxes that we may owe.  In the past, settlement of these matters has not had a material adverse financial impact on us, and currently we have no material assessments for potential taxes.

We are subject to various possible contingencies that arise primarily from interpretation of federal and state laws and regulations affecting the oil and natural gas industry.  Such contingencies include differing interpretations as to the prices at which oil and natural gas sales may be made, the prices at which royalty owners may be paid for production from their leases, environmental issues and other matters.  Although we believe that we have complied with the various laws and regulations, administrative rulings and interpretations thereof, adjustments could be required as new interpretations and regulations are issued.  In addition, production rates, marketing and environmental matters are subject to regulation by various federal and state agencies.

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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Schedule of Finite-Lived Intangible Assets

The following table summarizes the carrying values of our intangible assets as of December 31, 2014 and 2013:

In thousands	Helium Production Rights			CO2 Purchase Contract			Total
December 31, 2014
Intangible asset value	$	55,266		$	34,341		$	89,607
Accumulated amortization	(15		)	(3,625		)	(3,640		)
Net book value as of December 31, 2014	$	55,251		$	30,716		$	85,967
December 31, 2013
Intangible asset value	$	55,266		$	33,931		$	89,197
Accumulated amortization	—			(1,319		)	(1,319		)
Net book value as of December 31, 2013	$	55,266		$	32,612		$	87,878

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

At December 31, 2014, our estimated amortization expense for our intangible assets subject to amortization over the next five years is as follows:

In thousands
2015	$	2,289
2016	2,488
2017	2,788
2018	2,858
2019	2,833

Weighted average shares used in basic and diluted net income per common share

The following is a reconciliation of the weighted average shares used in the basic and diluted net income per common share calculations for the periods indicated:

	Year Ended December 31,
In thousands	2014	2013	2012
Basic weighted average common shares outstanding	348,962	366,659	385,205
Potentially dilutive securities
Restricted stock, stock options, SARs and performance-based equity awards	2,205	3,218	3,733
Diluted weighted average common shares outstanding	351,167	369,877	388,938

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Property and Equipment (Summary of Net Property and Equipment) (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Proved properties	$ 9,782,337,000		$ 8,945,326,000
Unevaluated properties	918,406,000		780,481,000
Total	10,700,743,000		9,725,807,000
Accumulated depletion and depreciation of oil and natural gas properties	(3,679,883,000)		(3,219,500,000)
Net oil and natural gas properties	7,020,860,000		6,506,307,000
CO2 properties	1,162,538,000		1,117,167,000
Other property and equipment	468,051,000		466,969,000
Property, Plant and Equipment [Line Items]
Total	2,269,564,000		2,209,560,000
Accumulated depletion and depreciation	(4,248,652,000)		(3,668,225,000)
Net property and equipment	10,352,244,000		9,851,278,000
CO2 pipelines not placed in service	98,500,000
CO2 properties [Member]
Property, Plant and Equipment [Line Items]
Accumulated depletion and depreciation	(183,646,000)		(150,968,000)
Net property and equipment	978,892,000		966,199,000
Pipelines and plants [Member]
Property, Plant and Equipment [Line Items]
CO2 pipelines	1,733,562,000	[1]	1,681,774,000
Plants	536,002,000		527,786,000
Total	2,269,564,000		2,209,560,000
Accumulated depletion and depreciation	(182,385,000)		(134,697,000)
Net property and equipment	2,087,179,000		2,074,863,000
Other property and equipment [Member]
Property, Plant and Equipment [Line Items]
Accumulated depletion and depreciation	(202,738,000)		(163,060,000)
Net property and equipment	$ 265,313,000		$ 303,909,000

[1] Amount includes $98.5 million of CO2 pipelines at December 31, 2014 that were under construction and not subject to depreciation during 2014.

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Significant Accounting Policies (Reconciliation of Weighted Average Shares Table) (Details 2) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Weighted average shares used in the basic and diluted net income per common share
Basic weighted average common shares	348,962	366,659	385,205
Potentially dilutive securities:
Restricted stock, stock options, SARs and performance-based equity awards	2,205	3,218	3,733
Diluted weighted average common shares	351,167	369,877	388,938

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Consolidated Statements of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Expenses
Capitalized Interest	$ 24,202	$ 79,253	$ 77,432

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Additional Balance Sheet Details (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accrued exploration and development costs	$ 90,939	$ 100,564
Accounts payable	64,604	63,263
Accrued compensation	62,513	55,043
Accrued lease operating expenses	56,798	59,762
Accrued interest	48,255	68,871
Taxes payable	39,816	28,019
Other	31,833	35,021
Total	$ 394,758	$ 410,543

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Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) (USD $)	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Stockholders' Equity [Abstract]
Common stock cash dividend per share	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.25	$ 0	$ 0

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Income Taxes (Details Textuals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Loss carryforwards - federal	$ 44,076,000	$ 20,247,000
Loss carryforwards - state	43,270,000	41,379,000
Enhanced oil recovery credit carryforwards	42,817,000	14,974,000
Tax credit carryover	34,837,000	34,837,000
Tax benefit not recorded to additional paid-in capital	13,500,000
Valuation Allowance, Amount	$ 0

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Commitments and Contingencies (Future Non-Cancelable Pipeline and Capital Lease Payments) (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Leases [Abstract]
Capital Leases in Year 1	$ 61,225
Capital Leases in Year 2	61,906
Capital Leases in Year 3	56,072
Capital Leases in Year 4	53,083
Capital Leases in Year 5	44,960
Capital Leases, Thereafter	237,473
Capital Leases, Total minimum lease payments	514,719
Capital Leases, Less: Amount representing interest	(191,095)
Capital Leases, Present value of minimum lease payments	$ 323,624

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Stock Compensation Plans (Summary of Vesting Date Fair Value of Awards - Restricted Stock Legacy Encore Plan) (Details 8) (Encore Plan [Member], Restricted Stock [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Encore Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock vested	$ 340	$ 512	$ 584

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Acquisition (Tables)

12 Months Ended

Dec. 31, 2014

Business Combinations [Abstract]

Schedule of Business Acquisitions

The following table presents a summary of the fair value of assets acquired and liabilities assumed in the CCA acquisition:

In thousands
Consideration
Cash consideration (1)	$	1,001,707
Fair value of assets acquired and liabilities assumed
Oil and natural gas properties
Proved properties	783,507
Unevaluated properties	222,820
Other assets	2,589
Asset retirement obligations	(7,209		)
	$	1,001,707

(1) See Note 6, Income Taxes, for additional information regarding the like-kind-exchange transaction utilized to fund this purchase and Note 13, Supplemental Cash Flow Information, for supplemental cash flow information regarding the cash payment.

Business Acquisition, Pro Forma Information

Unaudited Pro Forma Acquisition Information.  The following combined pro forma total revenues and other income and net income are presented as if the previously discussed CCA acquisition had occurred on January 1, 2013:

	Year Ended
In thousands, except per-share data	December 31, 2013
Pro forma total revenues and other income	$	2,599,301
Pro forma net income	439,801
Pro forma net income per common share
Basic	$	1.20
Diluted	1.19

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Stock Compensation Plans (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Stock Compensation Plans (Textuals) [Abstract]
Stock Options and SARs expiration period	10 years
Restricted Stock [Member] | Minimum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted Stock [Member] | Maximum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Performance equity awards [Member]
Stock Compensation Plans (Textuals) [Abstract]
Total compensation cost to be recognized in future periods	5.3
Weighted average period over which remaining cost will be recognized	1 year 11 months
Performance equity awards [Member] | Minimum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year 3 months 0 days
Performance equity awards [Member] | Maximum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years 3 months 0 days
Stock Options and Stock Appreciation Rights (SARs) [Member]
Stock Compensation Plans (Textuals) [Abstract]
Total compensation cost to be recognized in future periods	3.5
Weighted average period over which remaining cost will be recognized	1 year 7 months
Stock Options and Stock Appreciation Rights (SARs) [Member] | Minimum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Stock Options and Stock Appreciation Rights (SARs) [Member] | Maximum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
2004 Omnibus Stock and Incentive Plan
Stock Compensation Plans (Textuals) [Abstract]
Maximum number of common stock shares authorized for issuance under Plan	34,500,000
Shares available for future awards	9,700,000
2004 Omnibus Stock and Incentive Plan | Restricted Stock [Member]
Stock Compensation Plans (Textuals) [Abstract]
Total compensation cost to be recognized in future periods	27.7
Weighted average period over which remaining cost will be recognized	1 year 9 months
2004 Omnibus Stock and Incentive Plan | Restricted stock or performance vesting awards [Member]
Stock Compensation Plans (Textuals) [Abstract]
Maximum number of common stock shares authorized for issuance under Plan	27,200,000
Shares available for future awards	9,700,000
Encore Plan [Member] | Restricted Stock [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years

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Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Information [Abstract]

Schedule of Cash Flow, Supplemental Disclosure

Supplemental Cash Flow Information

	Year Ended December 31,
In thousands	2014			2013			2012
Supplemental cash flow information
Cash paid for interest, expensed	$	185,140		$	117,442		$	137,950
Cash paid for interest, capitalized	24,202			79,253			77,432
Cash paid for income taxes	5,033			28,895			99,194
Cash received from income tax refunds	(13,193		)	(17,087		)	(38,004		)
Noncash investing activities
Increase in asset retirement obligations	6,500			26,946			56,290
Increase (decrease) in liabilities for capital expenditures	215			(18,321		)	(26,882		)
Increase in restricted cash (1)	—			—			1,262,559
Decrease in restricted cash (2)	—			1,050,328			212,544

(1) During 2012, $212.5 million of proceeds from the sale of certain non-core assets in the Gulf Coast Region and $1.05 billion of the cash proceeds from the Bakken Exchange Transaction were paid by the respective purchaser directly to a qualified intermediary to facilitate a like-kind-exchange transaction for federal income tax purposes.

(2) During 2012 and 2013, proceeds from the sales of our oil and natural gas property dispositions in 2012, which were held by a qualified intermediary, were released in 2012 to fund the Thompson Field acquisition and in 2013 primarily to fund a portion of the CCA acquisition and certain post-closing costs under the Bakken Exchange Transaction.

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Fair Value Measurements

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 10. Fair Value Measurements

The FASC Fair Value Measurement topic defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (often referred to as the "exit price").  We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique.  These inputs can be readily observable, market corroborated or generally unobservable.  We primarily apply the income approach for recurring fair value measurements and endeavor to utilize the best available information.  Accordingly, we utilize valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs.  We are able to classify fair value balances based on the observability of those inputs.  The FASC establishes a fair value hierarchy that prioritizes the inputs used to measure fair value.  The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement).  The three levels of the fair value hierarchy are as follows:

• Level 1 — Quoted prices in active markets for identical assets or liabilities as of the reporting date.

• Level 2 — Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reported date.  Level 2 includes those financial instruments that are valued using models or other valuation methodologies.  Instruments in this category include non-exchange-traded oil and natural gas derivatives that are based on NYMEX pricing.  Our costless collars and the sold put features of our enhanced oil swaps and three-way collars are valued using the Black-Scholes model, an industry standard option valuation model that takes into account inputs such as contractual prices for the underlying instruments, including maturity, quoted forward prices for commodities, interest rates, volatility factors and credit worthiness, as well as other relevant economic measures.  Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

• Level 3 — Pricing inputs include significant inputs that are generally less observable.  These inputs may be used with internally developed methodologies that result in management's best estimate of fair value.  At December 31, 2014, instruments in this category include non-exchange-traded oil derivatives that are based on regional pricing other than NYMEX (e.g., Light Louisiana Sweet). The valuation models utilized for enhanced swaps, costless collars and three-way collars are consistent with the methodologies described above; however, since the instruments are based on regional pricing other than NYMEX, certain inputs to the valuation are less observable. Implied volatilities utilized in the valuation of Level 3 instruments are developed using a benchmark, which is considered a significant unobservable input. A one percent increase or decrease in implied volatility would result in a change of approximately $1.4 million in the fair value of these instruments as of December 31, 2014.

We adjust the valuations from the valuation model for nonperformance risk, using our estimate of the counterparty's credit quality for asset positions and our credit quality for liability positions.  We use multiple sources of third-party credit data in determining counterparty nonperformance risk, including credit default swaps.

The following table sets forth by level within the fair value hierarchy our financial assets and liabilities that were accounted for at fair value on a recurring basis as of December 31, 2014 and 2013:

	Fair Value Measurements Using:
	Quoted Prices in Active Markets		Significant Other Observable Inputs			Significant Unobservable Inputs
In thousands	(Level 1)		(Level 2)			(Level 3)			Total
December 31, 2014
Assets
Oil and natural gas derivative contracts – current	$	—	$	283,238		$	157,121		$	440,359
Oil and natural gas derivative contracts – long-term	—		34,862			31,325			66,187
Total Assets	$	—	$	318,100		$	188,446		$	506,546
December 31, 2013
Assets
Oil and natural gas derivative contracts – current	$	—	$	5		$	—		$	5
Oil and natural gas derivative contracts – long-term	—		3,034			6,908			9,942
Total Assets	$	—	$	3,039		$	6,908		$	9,947
Liabilities
Oil and natural gas derivative contracts – current	$	—	$	(53,822	)	$	—		$	(53,822	)
Oil and natural gas derivative contracts – long-term	—		(3,214		)	(199		)	(3,413		)
Total Liabilities	$	—	$	(57,036	)	$	(199	)	$	(57,235	)

Since we do not apply hedge accounting for our commodity derivative contracts, any gains and losses on our assets and liabilities are included in "Commodity derivatives expense (income)" in the accompanying Consolidated Statements of Operations.

Level 3 Fair Value Measurements

The following table summarizes the changes in the fair value of our Level 3 assets and liabilities for the years ended December 31, 2014 and 2013:

	Year Ended December 31,
In thousands	2014		2013
Fair value of Level 3 instruments, beginning of year	$	6,709	$	—
Fair value adjustments on commodity derivatives	181,737		6,709
Fair value of Level 3 instruments, end of year	$	188,446	$	6,709
The amount of total gains for the period included in earnings attributable to the change in unrealized gains relating to assets still held at the reporting date	$	181,737	$	6,709

We utilize an income approach to value our Level 3 enhanced swaps, costless collars and three-way collars. We obtain and ensure the appropriateness of the significant inputs to the calculation, including contractual prices for the underlying instruments, maturity, forward prices for commodities, interest rates, volatility factors and credit worthiness, and the fair value estimate is prepared and reviewed on a quarterly basis. The following table details fair value inputs related to implied volatilities utilized in the valuation of our Level 3 oil derivative contracts:

	Fair Value at 12/31/2014 (in thousands)		Valuation Technique	Unobservable Input	Range
Oil derivative contracts	$	188,446	Discounted cash flow / Black-Scholes	Volatility of Light Louisiana Sweet for settlement periods beginning after January 1, 2015	29.3% – 44.2%

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

During 2012, we recorded a $15.1 million impairment charge for an investment in the preferred stock of an entity that was created to develop a gasification plant (in which we would offtake its CO₂ to use in our tertiary oil operations) as a result of this project not moving forward. This charge is classified as "Impairment of assets" in the Consolidated Statement of Operations for the year ended December 31, 2012.

Other Fair Value Measurements

The carrying value of our loans under our Bank Credit Agreement approximate fair value as they are subject to short-term floating interest rates that approximate the rates available to us for those periods.  We use a market approach to determine fair value of our fixed-rate long-term debt using observable market data. The fair values of our senior subordinated notes are based on quoted market prices.  The estimated fair value of our debt as of December 31, 2014 and 2013, excluding pipeline financing and capital lease obligations, is $2,938.6 million and $2,957.9 million, respectively.  We have other financial instruments consisting primarily of cash, cash equivalents, short-term receivables and payables that approximate fair value due to the nature of the instrument and the relatively short maturities.