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Supplemental Gas and Oil Information (Unaudited)
 12 Months Ended
Dec. 31, 2015
Oil and Gas Exploration and Production Industries Disclosures [Abstract]  
Oil and Gas Exploration and Production Industries Disclosures [Text Block]

The Company is making the following supplemental disclosures of oil and gas producing activities, in accordance with ASC 932, Extractive Activities - Oil and Gas, as amended by ASU 2010-03, Oil and Gas Reserve Estimation and Disclosures, and SEC Regulation S-X. The Company uses the successful efforts accounting method for its oil and gas exploration and development activities. All of QEP's properties are located in the United States.
Capitalized Costs
The aggregate amounts of costs capitalized for oil and gas exploration and development activities and the related amounts of accumulated depreciation, depletion and amortization are shown below:
 
 
December 31,
 
2015
 
2014
 
(in millions)
Proved properties
$
13,314.9

 
$
12,278.7

Unproved properties, net
691.0

 
825.2

Total proved and unproved properties
14,005.9

 
13,103.9

Accumulated depreciation, depletion and amortization
(6,870.2
)
 
(6,153.0
)
Net capitalized costs
$
7,135.7

 
$
6,950.9



Costs Incurred
The costs incurred in oil and gas acquisition, exploration and development activities are displayed in the table below. Development costs are net of the change in accrued capital costs of $127.6 million and ARO additions and revisions of $21.0 million during the year ended December 31, 2015. The costs incurred to advance the development of reserves that were classified as proved undeveloped were approximately $811.3 million in 2015, $796.7 million in 2014, and $645.9 million in 2013.
 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(in millions)
Proved property acquisitions
$
49.6

 
$
465.4

 
$
31.6

Unproved property acquisitions
39.8

 
496.3

 
9.3

Exploration (capitalized and expensed)
8.7

 
23.6

 
14.6

Development
1,010.3

 
1,695.1

 
1,440.8

Total costs incurred
$
1,108.4

 
$
2,680.4

 
$
1,496.3



Results of Operations
Following are the results of operations of QEP Energy's oil and gas producing activities, before allocated corporate overhead and interest expenses.

 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(in millions)
Revenues
$
1,390.4

 
$
2,374.6

 
$
1,901.2

Production costs
654.1

 
735.6

 
583.3

Exploration expenses
2.7

 
9.9

 
11.9

Depreciation, depletion and amortization
870.8

 
984.4

 
954.2

Impairment
55.6

 
1,143.2

 
93.0

Total expenses
1,583.2

 
2,873.1

 
1,642.4

Income (loss) before income taxes
(192.8
)
 
(498.5
)
 
258.8

Income tax benefit (provision)
70.6

 
182.5

 
(96.3
)
Results of operations from producing activities excluding allocated corporate overhead and interest expenses
$
(122.2
)
 
$
(316.0
)
 
$
162.5



Estimated Quantities of Proved Oil and Gas Reserves
Estimates of proved oil and gas reserves have been completed in accordance with professional engineering standards and the Company's established internal controls, which includes the compliance oversight of a multi-functional reserves review committee responsible to the Company's Board of Directors. QEP Energy's estimated proved reserves have been prepared by Ryder Scott Company, L.P. and DeGolyer and MacNaughton, independent reservoir engineering consultants, in accordance with the SEC's Regulation S-X and ASC 932 as amended. The individuals performing reserves estimates possess professional qualifications and demonstrate competency in reserves estimation and evaluation. The estimates of proved reserves are inherently imprecise and are continually subject to revision based on production history, results of additional exploration and development, price changes and other factors.

All of QEP Energy's proved undeveloped reserves at December 31, 2015, are scheduled to be developed within five years from the date such locations were initially disclosed as proved undeveloped reserves; however, long-term development of gas reserves in Pinedale is governed by the Bureau of Land Management's September 2008, Record of Decision (ROD) on the Final Supplemental Environmental Impact Statements. Under the ROD, QEP Energy is allowed to drill and complete wells year-round in designated concentrated development areas. The ROD contains additional requirements and restrictions on the sequence of development, which requires the Company to develop its leasehold from the south to the north. These restrictions result in protracted, phased development that is beyond the control of the Company. The Company plans to continue development of its leasehold and anticipates that it will have the financial capability to continue development in the manner estimated. While the majority of QEP's PUD reserves are located on leaseholds that are held by production, any PUD locations on expiring leaseholds are scheduled for development during the primary term of the lease.

As of December 31, 2015, all of the Company's oil and gas reserves are attributable to properties within the United Sates. A summary of the Company's change in quantities of proved gas, oil and NGL reserves for the years ended December 31, 2013, 2014 and 2015 are as follows:
 
Gas
 
Oil
 
NGL
 
Total
 
(Bcf)
 
(MMbbl)
 
(MMbbl)
 
(Bcfe)
Balance at December 31, 2012
2,622.4

 
119.0

 
99.9

 
3,936.1

Revisions of previous estimates(1)
(288.3
)
 
1.3

 
(8.0
)
 
(328.5
)
Extensions and discoveries(2)
455.6

 
38.3

 
16.4

 
783.8

Purchase of reserves in place
1.0

 
1.9

 
0.2

 
13.4

Sale of reserves in place
(16.9
)
 
(1.7
)
 
(1.1
)
 
(33.9
)
Production
(218.9
)
 
(10.2
)
 
(4.8
)
 
(309.0
)
Balance at December 31, 2013
2,554.9

 
148.6

 
102.6

 
4,061.9

Revisions of previous estimates(3)
27.1

 
(4.0
)
 
1.4

 
11.3

Extensions and discoveries(4)
141.4

 
16.8

 
8.6

 
294.1

Purchase of reserves in place(5)
72.5

 
35.7

 
12.3

 
360.7

Sale of reserves in place(6)
(299.4
)
 
(7.5
)
 
(21.5
)
 
(473.4
)
Production
(179.3
)
 
(17.1
)
 
(6.8
)
 
(322.7
)
Balance at December 31, 2014
2,317.2

 
172.5

 
96.6

 
3,931.9

Revisions of previous estimates(7)
(463.8
)
 
(47.0
)
 
(55.3
)
 
(1,077.9
)
Extensions and discoveries(8)
467.7

 
85.6

 
21.8

 
1,111.9

Purchase of reserves in place(9)
3.2

 
2.0

 
0.6

 
18.7

Sale of reserves in place(10)
(34.3
)
 
(0.4
)
 
(0.2
)
 
(37.6
)
Production
(181.1
)
 
(19.6
)
 
(4.7
)
 
(326.8
)
Balance at December 31, 2015
2,108.9

 
193.1


58.8


3,620.2

Proved developed reserves
 
 
 
 
 
 
 
Balance at December 31, 2012
1,531.7

 
47.4

 
49.3

 
2,111.9

Balance at December 31, 2013
1,406.3

 
71.8

 
52.8

 
2,154.0

Balance at December 31, 2014
1,288.4

 
99.3

 
52.2

 
2,197.5

Balance at December 31, 2015
1,245.3

 
109.7

 
34.4

 
2,109.4

Proved undeveloped reserves
 
 
 
 
 
 
 
Balance at December 31, 2012
1,090.7

 
71.6

 
50.6

 
1,824.2

Balance at December 31, 2013
1,148.6

 
76.8

 
49.8

 


Balance at December 31, 2014
1,028.8

 
73.2

 
44.4

 
1,734.4

Balance at December 31, 2015
863.6

 
83.4

 
24.4

 
1,510.8

___________________________
(1) 
Revisions of previous estimates in 2013 include positive impacts due to 80.0 Bcfe pricing revisions, negative performance revisions of 265.5 Bcfe, 42.0 Bcfe negative operating cost revisions and 101.0 Bcfe other negative revisions. Pricing revisions were primarily due to increased gas prices, which increased reserves by 68.4 Bcfe. Negative performance revisions were driven by a 129.5 Bcfe decrease in Pinedale reserves and 112.7 Bcfe decrease in Haynesville reserves related to reserve adjustments based on additional production history, well performance and current pricing causing a revised future development plan, which includes lower density drilling and a change in well spacing assumptions in some areas.
(2) 
Extensions and discoveries in 2013 increased proved reserves by 783.8 Bcfe, primarily related to extensions and discoveries in the Williston Basin of 217.6 Bcfe, in Pinedale of 265.3 Bcfe, and 175.9 Bcfe in Haynesville. Extension and discoveries in Pinedale and Haynesville relate to certain less densely spaced wells with higher estimates of recoverable oil and gas, which were booked to replace wells removed from the Company's reserves through negative revisions caused by a change in well spacing assumptions in these areas. Of these extensions and discoveries, 687.6 Bcfe related to new PUD locations.
(3) 
Revisions of previous estimates in 2014 include 248.5 Bcfe negative performance revisions partially offset by positive other revisions of 197.7 Bcfe, operating cost revisions of 39.2 Bcfe and pricing revisions of 22.9 Bcfe. Negative performance revisions were driven by a 194.0 Bcfe decrease in Pinedale reserves related to downward forecast revisions on proved developed (PDP) wells, additional production history on PUD to PDP performance and a downward adjustment in the number of PUD locations. Other negative revisions related to adjustments to shrink and lease operating expense deducts. Pricing revisions were primarily due to increased gas prices, which increased reserves by 21.9 Bcfe.
(4) 
Extensions and discoveries in 2014 increased proved reserves by 294.1 Bcfe, primarily related to extensions and discoveries in Pinedale of 133.6 Bcfe and the Williston Basin of 123.3 Bcfe. All of these extensions and discoveries related to new well completions and the associated new PUD locations as part of the Company's development drilling plans and new compression well projections in Pinedale.
(5) 
Purchase of reserves in place in 2014 relate to the Company's Permian Basin Acquisition as discussed in Note 2 – Acquisitions and Divestitures.
(6) 
Sale of reserves in place primarily related to property sales in the Midcontinent in the second and fourth quarters of 2014 as discussed in Note 2 – Acquisitions and Divestitures.
(7) 
Revisions of previous estimates in 2015 include: 756.9 Bcfe of negative revisions due to lower pricing and 403.2 Bcfe of negative revisions unrelated to pricing, partially offset by 82.2 Bcfe of positive performance revisions. Negative pricing revisions were driven by lower gas, oil, and NGL prices. Negative other revisions included operating in ethane rejection in Pinedale and Uinta Basin.
(8) 
Extensions and discoveries in 2015 increased proved reserves by 1,111.9 Bcfe, primarily related to extensions and discoveries in Williston Basin of 409.3 Bcfe, Uinta Basin of 318.9 Bcfe, and Permian Basin of 297.8 Bcfe. All of these extensions and discoveries related to new well completions and the associated new PUD locations as part of the Company's development drilling plans and new compression well projections in Pinedale.
(9) 
Purchase of reserves in place in 2015 related to the acquisition of additional interests in QEP's operated wells in the Williston Basin as discussed in Note 2 – Acquisitions and Divestitures.
(10) 
Sale of reserves in place in 2015 relate to the divestiture of QEP's interest in certain non-core properties as discussed in Note 2 – Acquisitions and Divestitures.

Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves
Future net cash flows were calculated at December 31, 2015, 2014 and 2013, by applying prices, which were the simple average of the first-of-the-month commodity prices, adjusted for location and quality differentials, for each of the 12 months during 2015, 2014 and 2013, with consideration of known contractual price changes. The prices used do not include any impact of QEP's commodity derivatives portfolio. The following table provides the average benchmark prices per unit, before location and quality differential adjustments, used to calculate the related reserve category:
 
For the year ended December 31,
 
2015
 
2014
 
2013
Average benchmark price per unit:
 
 
 
 
 
Gas price (per MMBtu)
$
2.59

 
$
4.35

 
$
3.67

Oil price (per bbl)
50.28

 
94.99

 
96.94


Year-end operating expenses, development costs and appropriate statutory income tax rates, with consideration of future tax rates, were used to compute the future net cash flows. All cash flows were discounted at 10% to reflect the time value of cash flows, without regard to the risk of specific properties. The estimated future costs to develop booked proved undeveloped reserves are approximately $438.9 million in 2016, $472.8 million in 2017 and $306.8 million in 2018. The scheduled PUD development costs are reduced from historical levels in conjunction with our efforts to reduce drilling and completion activities, gain operational efficiencies, slow production growth and preserve liquidity in the current commodity price environment. Estimated future development costs include capital spending on major development projects, some of which will take several years to complete. QEP believes cash flow from operations, cash on hand and availability under its credit facility will be sufficient to cover these estimated future development costs.

The assumptions used to derive the standardized measure of discounted future net cash flows are those required by accounting standards and do not necessarily reflect the Company's expectations. The information may be useful for certain comparative purposes but should not be solely relied upon in evaluating QEP or its performance. Furthermore, information contained in the following table may not represent realistic assessments of future cash flows, nor should the standardized measure of discounted future net cash flows be viewed as representative of the current value of the Company's reserves. Management believes that the following factors should be considered when reviewing the information below:     
•
Future commodity prices received for selling the Company's net production will likely differ from those required to be used in these calculations.
•
Future operating and capital costs will likely differ from those required to be used in these calculations.
•
Future market conditions, government regulations, reservoir conditions and risks inherent in the production of oil and gas may cause production rates in future years to vary significantly from those rates used in the calculations.
•
Future revenues may be subject to different production, severance and property taxation rates.
•
The selection of a 10% discount rate is arbitrary and may not be a reasonable factor in adjusting for future economic conditions or in considering the risk that is part of realizing future net cash flows from the reserves.

The standardized measure of discounted future net cash flows relating to proved reserves is presented in the table below:
 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(in millions)
Future cash inflows
$
15,325.3

 
$
28,167.3

 
$
24,805.7

Future production costs
(7,389.9
)
 
(9,842.1
)
 
(8,400.3
)
Future development costs
(2,202.5
)
 
(3,521.3
)
 
(4,056.7
)
Future income tax expenses
(1,169.3
)
 
(4,304.0
)
 
(3,284.6
)
Future net cash flows
4,563.6

 
10,499.9

 
9,064.1

10% annual discount for estimated timing of net cash flows
(2,087.3
)
 
(5,159.9
)
 
(4,680.2
)
Standardized measure of discounted future net cash flows
$
2,476.3

 
$
5,340.0

 
$
4,383.9


The principal sources of change in the standardized measure of discounted future net cash flows relating to proved reserves is presented in the table below:
 
Year Ended December 31,
 
2015
 
2014
 
2013
 
(in millions)
Balance at January 1,
$
5,340.0

 
$
4,383.9

 
$
3,034.7

Sales of gas, oil and NGL produced during the period, net of production costs
(736.3
)
 
(1,639.0
)
 
(1,317.9
)
Net change in sales prices and in production (lifting) costs related to future production
(6,307.8
)
 
726.6

 
1,236.3

Net change due to extensions, discoveries and improved recovery
1,765.7

 
979.9

 
2,230.7

Net change due to revisions of quantity estimates
(1,350.2
)
 
35.9

 
(709.6
)
Net change due to purchases of reserves in place
29.7

 
695.3

 
36.8

Net change due to sales of reserves in place
(48.8
)
 
(1,153.7
)
 
(73.2
)
Previously estimated development costs incurred during the period
865.0

 
867.5

 
722.7

Changes in estimated future development costs
560.7

 
409.6

 
(596.5
)
Accretion of discount
752.9

 
597.3

 
402.2

Net change in income taxes
1,554.4

 
(600.3
)
 
(601.7
)
Other
51.0

 
37.0

 
19.4

Net change
(2,863.7
)
 
956.1

 
1,349.2

Balance at December 31,
$
2,476.3

 
$
5,340.0

 
$
4,383.9