Exhibit 99.1

NEWS RELEASE

APACHE CORPORATION ANNOUNCES FIRST-QUARTER 2019

FINANCIAL AND OPERATIONAL RESULTS

• Reported first-quarter production of 503,000 barrels of oil equivalent (BOE) per day. Adjusted production, which excludes Egypt noncontrolling interest and tax barrels, was 437,000 BOE per day, up 19 percent over first-quarter 2018;

• Achieved U.S. production of 292,000 BOE per day, exceeding guidance by 5,000 BOE per day, and reached record Permian Basin production of 248,000 BOE per day;

• Achieved International reported production of 211,000 BOE per day; adjusted production of 145,000 BOE per day exceeding guidance by 7,000 BOE per day;

• Invested $597 million in upstream capital program and remain on track for $2.4 billion for the year;

• Secured sales agreements for approximately $300 million of noncore assets; progressing additional sales; and

• Reiterating 2019 production guidance of 6 to 10 percent from fourth-quarter 2018 to fourth-quarter 2019 on an unchanged annual upstream capital program of $2.4 billion.

HOUSTON, May 1, 2019 – Apache Corporation (NYSE, Nasdaq: APA) today announced its financial and operational results for the first quarter of 2019.

Apache reported a quarterly loss of $47 million or $0.12 per diluted common share for the first quarter of 2019. These results include a number of items outside of core earnings that are typically excluded by the investment community in their published earnings estimates. When adjusted for items that impact the comparability of results, Apache’s first-quarter earnings were $38 million or $0.10 per share. Net cash provided by operating activities in the quarter was $598 million. Adjusted EBITDAX was $1.1 billion.

“Apache had an excellent first quarter with strong execution, well performance and delivery against our production and capital guidance. We exceeded both our U.S. and international production guidance on a lower than expected capital budget.

“In the Permian Basin, we grew 5 percent quarter over quarter and maintained oil production near fourth-quarter levels, despite placing one of our two completion crews on a frac holiday for the entire first quarter. At Alpine High, where we also had a relatively low number of completions, production was up significantly from the fourth quarter and was in-line with our guidance of 70,000 BOE per day.

APACHE CORPORATION ANNOUNCES FIRST-QUARTER 2019 FINANCIAL AND OPERATIONAL RESULTS

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“International production grew 6 percent compared to the fourth quarter and benefited from high facilities uptime across our operations, strong early production rates from two new wells in the North Sea, and a continuation of good results from our revamped waterflood program in the Forties Field,” said John J. Christmann IV, Apache’s chief executive officer and president.

First-quarter operational summary

Highlights from the company’s three principal areas include:

• United States – U.S. production averaged 292,000 BOE per day. The company averaged 16 rigs and drilled and completed 39 gross-operated wells.

First-quarter production in the Permian Basin averaged 248,000 BOE per day, a record for the region, and an increase of 36 percent year over year. The company averaged 14 rigs and drilled and completed 39 gross-operated wells.

^○  Midland Basin – During the quarter, the company drilled and completed 18 gross-operated wells and maintained production despite significantly fewer wells placed online compared to the previous quarter.

^○  Delaware Basin – Apache’s activity in the Delaware Basin currently includes operations in Alpine High, Dixieland, and Pecos Bend in Reeves County and the slope play in southeast New Mexico.

At Alpine High, production in the first quarter averaged 70,000 BOE per day, a 165-percent increase over the first quarter of 2018. During the quarter, the company drilled and completed 17 gross-operated wells. The company continues to make significant progress on drilling and completion costs in the play and has delivered a

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20 percent and 32 percent reduction, respectively, from 2017 averages for the quarter. Further improvements are expected as Alpine High moves further into development and optimization mode. As previously announced, Apache initiated the deferral of certain natural gas production volumes near the end of the quarter in response to severe Waha Hub gas price weakness. These deferrals had a small impact on first-quarter volumes.

Outside of Alpine High in the Delaware Basin, four new wells were placed online during the quarter.

• Egypt – Apache averaged 10 rigs during the quarter and drilled and completed 23 gross-operated wells with an 83-percent success rate. Adjusted production in Egypt, which excludes noncontrolling interest and the impact of tax barrels, averaged 79,000 BOE per day. As a result of recently awarded concessions and the company’s ongoing broadband seismic acquisition program, Apache has added several hundred new leads and prospects in the region.

• North Sea – Apache averaged 3 rigs during the quarter and produced 66,000 BOE per day, the highest quarterly production in two years. Strong production levels were the result of a full quarter of production from Garten, a new development well at Callater and strong uptime on producing facilities for the quarter.

Capital and production outlook

Upstream oil and gas investment was $597 million in the first quarter, and the company reiterates its annual capital investment guidance of approximately $2.4 billion for the year.

The company is reiterating its previously stated production guidance of 6 to 10 percent growth from fourth-quarter 2018 to fourth-quarter 2019, including 12 to 16 percent growth in the U.S. and 5 percent growth in Permian oil.

APACHE CORPORATION ANNOUNCES FIRST-QUARTER 2019 FINANCIAL AND OPERATIONAL RESULTS

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Details on additional financial and operational guidance can be found in the First-Quarter 2019 Financial and Operational Supplement at www.apachecorp.com/financialdata.

“We previously stated Apache’s commitment to returning at least 50 percent of our incremental cash generation from all sources to investors, before increasing our planned activity set. In keeping with this commitment, our 2019 planned capital activity and budget remains unchanged, and we will begin returning incremental cash to investors in the coming months. This is of course in addition to our current regular dividend.

“In summary, 2019 is progressing very well. Overall production was strong in the first quarter, and we are demonstrating excellent capital discipline and cost control. The North Sea and Egypt continue to deliver robust free cash flow with their leverage to premium Brent crude prices and higher natural gas and NGL netbacks. In the Permian, we are poised to deliver attractive oil growth and a substantial cash flow uplift at Alpine High in the second half of the year. We will also be advancing our differential exploration initiatives, most notably in Suriname.

“Our strategy remains the same – we will fund an activity level and investment program capable of delivering long-term returns and sustainable growth while living within cash flow at reasonable oil prices and returning capital to investors,” concluded Christmann.

Conference call

Apache will host a conference call to discuss its first-quarter 2019 results at 10 a.m. Central time, Thursday, May 2. The conference call will be webcast from Apache’s website at www.apachecorp.com and investor.apachecorp.com, and the webcast replay will be archived there as well. A replay of the conference call will be available for seven days following the call. The number for the replay is (855) 859-2056 or (404) 537-3406 for international calls. The conference access code is 2197977. Sign up for email alerts to be reminded of the webcast at http://investor.apachecorp.com/alerts/email-alerts-subscription.

APACHE CORPORATION ANNOUNCES FIRST-QUARTER 2019 FINANCIAL AND OPERATIONAL RESULTS

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Additional information

Additional information follows, including reconciliations of adjusted earnings, cash flow from operations before changes in operating assets and liabilities, adjusted EBITDAX, upstream capital investment and net debt (non-GAAP financial measures) to GAAP measures and information regarding adjusted production. Apache’s quarterly supplement is available at www.apachecorp.com/financialdata.

About Apache

Apache Corporation is an oil and gas exploration and production company with operations in the United States, Egypt and the United Kingdom. Apache posts announcements, operational updates, investor information and copies of all press releases on its website, www.apachecorp.com, and on its Media and Investor Center mobile app.

Non-GAAP financial measures

Apache’s financial information includes information prepared in conformity with generally accepted accounting principles (GAAP) as well as non-GAAP financial information. It is management’s intent to provide non-GAAP financial information to enhance understanding of our consolidated financial information as prepared in accordance with GAAP. Adjusted earnings, cash flow from operations before changes in operating assets and liabilities, upstream capital investment, adjusted EBITDAX and net debt are non-GAAP measures. This non-GAAP information should be considered by the reader in addition to, but not instead of, the financial statements prepared in accordance with GAAP. Each non-GAAP financial measure is presented along with the corresponding GAAP measure so as not to imply that more emphasis should be placed on the non-GAAP measure.

APACHE CORPORATION ANNOUNCES FIRST-QUARTER 2019 FINANCIAL AND OPERATIONAL RESULTS

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Forward-looking statements

This news release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements can be identified by words such as “anticipates,” “intends,” “plans,” “seeks,” “believes,” “estimates,” “expects,” “guidance,” “outlook,” “projects,” “will,” and similar references to future periods. These statements include, but are not limited to, statements about future plans, expectations and objectives for Apache’s operations, including statements about our capital plans, drilling plans, production expectations, asset sales, and monetizations. While forward-looking statements are based on assumptions and analyses made by us that we believe to be reasonable under the circumstances, whether actual results and developments will meet our expectations and predictions depend on a number of risks and uncertainties which could cause our actual results, performance, and financial condition to differ materially from our expectations. See “Risk Factors” in our 2018 Form 10-K filed with the U.S. Securities and Exchange Commission (“SEC”) for a discussion of risk factors that affect our business. Any forward-looking statement made by us in this news release speaks only as of the date on which it is made. Factors or events that could cause our actual results to differ may emerge from time to time, and it is not possible for us to predict all of them. We undertake no obligation to publicly update any forward-looking statement, whether as a result of new information, future development or otherwise, except as may be required by law.

Cautionary note to investors

The SEC permits oil and gas companies, in their filings with the SEC, to disclose only proved, probable, and possible reserves that meet the SEC’s definitions for such terms. Apache may use certain terms in this release, such as “resources,” “potential resources,” “resource potential,” “estimated net reserves,” “recoverable reserves,” and other similar terms that the SEC guidelines strictly prohibit Apache from including in filings with the SEC. Such terms do not take into account the certainty of resource recovery, which is contingent on exploration success, technical improvements in drilling access, commerciality and other factors, and are therefore not indicative of expected future resource recovery and should not be

APACHE CORPORATION ANNOUNCES FIRST-QUARTER 2019 FINANCIAL AND OPERATIONAL RESULTS

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relied upon. Investors are urged to consider carefully the disclosure in Apache’s Annual Report on Form 10-K for the fiscal year ended Dec. 31, 2018, available from Apache at www.apachecorp.com or by writing Apache at: 2000 Post Oak Blvd., Suite 100, Houston, TX 77056 (Attn: Corporate Secretary). You can also obtain this report from the SEC by calling 1-800-SEC-0330 or from the SEC’s website at www.sec.gov.

Contacts

Investor:	(281) 302-2286	Gary Clark
Media:	(713) 296-7276	Phil West
Website:	www.apachecorp.com

APA-F

-end-

APACHE CORPORATION

STATEMENT OF CONSOLIDATED OPERATIONS

(Unaudited)

(In millions, except per share data)

	For the Quarter Ended March 31,
	2019			2018
REVENUES AND OTHER:
Oil and gas production revenues
Oil revenues	$	1,310		$	1,393
Natural gas revenues		236			222
Natural gas liquids revenues		108			118
		1,654			1,733
Derivative instrument gain (loss)		(30	)		2
Gain (loss) on divestiture		3			7
Other		8			5
		1,635			1,747
OPERATING EXPENSES:
Lease operating expenses		365			349
Gathering, processing and transmission		88			86
Taxes other than income		51			55
Exploration		69			76
General and administrative		123			114
Transaction, reorganization and separation		4			—
Depreciation, depletion and amortization:
Oil and gas property and equipment		607			518
Other assets		39			35
Asset retirement obligation accretion		27			27
Financing costs, net		97			99
		1,470			1,359
NET INCOME BEFORE INCOME TAXES		165			388
Current income tax provision		186			198
Deferred income tax provision (benefit)		(19	)		(16	)
INCOME INCLUDING NONCONTROLLING INTEREST		(2	)		206
Net income attributable to noncontrolling interest – Egypt		44			61
Net income attributable to noncontrolling interest – Altus		1			—
NET INCOME ATTRIBUTABLE TO COMMON STOCK	$	(47	)	$	145
NET INCOME PER COMMON SHARE:
Basic	$	(0.12	)	$	0.38
Diluted	$	(0.12	)	$	0.38
WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic		376			382
Diluted		376			384
DIVIDENDS DECLARED PER COMMON SHARE	$	0.25		$	0.25

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APACHE CORPORATION

PRODUCTION INFORMATION

	For the Quarter Ended						% Change
	March 31, 2019		December 31, 2018		March 31, 2018		1Q19 to 4Q18			1Q19 to 1Q18
OIL VOLUME – Barrels per day
Permian		97,625		98,560		85,469		-1	%		14	%
MidContinent/Gulf Coast		8,699		9,697		10,494		-10	%		-17	%
Gulf of Mexico		2,454		2,391		3,784		3	%		-35	%
United States		108,778		110,648		99,747		-2	%		9	%
Egypt (1, 2)		91,616		86,103		95,270		6	%		-4	%
North Sea		54,528		52,519		46,348		4	%		18	%
International (1)		146,144		138,622		141,618		5	%		3	%
Total (1)		254,922		249,270		241,365		2	%		6	%
NATURAL GAS VOLUME – Mcf per day
Permian		618,238		553,945		357,311		12	%		73	%
MidContinent/Gulf Coast		116,272		120,720		121,046		-4	%		-4	%
Gulf of Mexico		9,797		7,477		10,187		31	%		-4	%
United States		744,307		682,142		488,544		9	%		52	%
Egypt (1, 2)		315,508		291,196		343,901		8	%		-8	%
North Sea		56,892		55,955		41,039		2	%		39	%
International (1)		372,400		347,151		384,940		7	%		-3	%
Total (1)		1,116,707		1,029,293		873,484		8	%		28	%
NGL VOLUME – Barrels per day
Permian		47,274		45,053		37,950		5	%		25	%
MidContinent/Gulf Coast		11,552		13,676		13,072		-16	%		-12	%
Gulf of Mexico		38		397		262		-90	%		-85	%
United States		58,864		59,126		51,284		0	%		15	%
Egypt (1, 2)		1,150		877		937		31	%		23	%
North Sea		1,823		1,476		1,168		24	%		56	%
International (1)		2,973		2,353		2,105		26	%		41	%
Total		61,837		61,479		53,389		1	%		16	%
BOE per day
Permian		247,939		235,936		182,972		5	%		36	%
MidContinent/Gulf Coast		39,630		43,493		43,740		-9	%		-9	%
Gulf of Mexico		4,124		4,035		5,744		2	%		-28	%
United States		291,693		283,464		232,456		3	%		25	%
Egypt (1, 2)		145,351		135,513		153,524		7	%		-5	%
North Sea		65,833		63,321		54,356		4	%		21	%
International (1)		211,184		198,834		207,880		6	%		2	%
Total (1)		502,877		482,298		440,336		4	%		14	%
Total excluding noncontrolling interests		454,371		437,030		389,098		4	%		17	%
(1) Includes net production volumes attributed to our noncontrolling partner in Egypt below:
Oil (b/d)		30,554		28,756		31,774
Gas (Mcf/d)		105,412		97,317		114,913
NGL (b/d)		383		292		312
(2) Egypt Gross Production – BOE per day		332,003		334,992		330,063		-1	%		1	%

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APACHE CORPORATION

ADJUSTED PRODUCTION INFORMATION

Adjusted production excludes certain items that management believes affect the comparability of operating results for the periods presented. Adjusted production excludes production attributable to 1) divested assets, 2) noncontrolling interest in Egypt, and 3) Egypt tax barrels. Management uses adjusted production to evaluate the company's operational trends and performance and believes it is useful to investors and other third parties.

	For the Quarter Ended						% Change
	March 31, 2019		December 31, 2018		March 31, 2018		1Q19 to 4Q18			1Q19 to 1Q18
OIL VOLUME – Barrels per day
Permian		97,625		98,560		85,469		-1	%		14	%
MidContinent/Gulf Coast		8,699		9,697		10,494		-10	%		-17	%
Gulf of Mexico		2,454		2,391		3,784		3	%		-35	%
United States		108,778		110,648		99,747		-2	%		9	%
Egypt		48,323		46,077		47,993		5	%		1	%
North Sea		54,528		52,519		46,348		4	%		18	%
International		102,851		98,596		94,341		4	%		9	%
Total		211,629		209,244		194,088		1	%		9	%
NATURAL GAS VOLUME – Mcf per day
Permian		618,238		553,945		357,311		12	%		73	%
MidContinent/Gulf Coast		116,272		120,720		121,046		-4	%		-4	%
Gulf of Mexico		9,797		7,477		10,187		31	%		-4	%
United States		744,307		682,142		488,544		9	%		52	%
Egypt		181,118		166,109		189,982		9	%		-5	%
North Sea		56,892		55,955		41,039		2	%		39	%
International		238,010		222,064		231,021		7	%		3	%
Total		982,317		904,206		719,565		9	%		37	%
NGL VOLUME – Barrels per day
Permian		47,274		45,053		37,950		5	%		25	%
MidContinent/Gulf Coast		11,552		13,676		13,072		-16	%		-12	%
Gulf of Mexico		38		397		262		-90	%		-85	%
United States		58,864		59,126		51,284		0	%		15	%
Egypt		678		527		495		29	%		37	%
North Sea		1,823		1,476		1,168		24	%		56	%
International		2,501		2,003		1,663		25	%		50	%
Total		61,365		61,129		52,947		0	%		16	%
BOE per day
Permian		247,939		235,936		182,972		5	%		36	%
MidContinent/Gulf Coast		39,630		43,493		43,740		-9	%		-9	%
Gulf of Mexico		4,124		4,035		5,744		2	%		-28	%
United States		291,693		283,464		232,456		3	%		25	%
Egypt		79,187		74,289		80,153		7	%		-1	%
North Sea		65,833		63,321		54,356		4	%		21	%
International		145,020		137,610		134,509		5	%		8	%
Total		436,713		421,074		366,965		4	%		19	%

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APACHE CORPORATION

PRICE INFORMATION

	For the Quarter Ended
	March 31, 2019		December 31, 2018		March 31, 2018
AVERAGE OIL PRICE PER BARREL
Permian	$	50.30	$	50.98	$	61.50
MidContinent/Gulf Coast		53.45		58.73		62.18
Gulf of Mexico		58.27		61.48		69.24
United States		50.70		51.85		61.76
Egypt		62.35		64.27		66.30
North Sea		64.15		62.68		65.87
International		63.00		63.69		66.16
Total		57.70		58.37		64.34
AVERAGE NATURAL GAS PRICE PER MCF
Permian	$	1.61	$	1.71	$	2.40
MidContinent/Gulf Coast		2.94		3.32		2.68
Gulf of Mexico		3.69		3.70		3.64
United States		1.83		2.03		2.49
Egypt		2.85		2.83		2.85
North Sea		6.24		7.91		6.60
International		3.36		3.65		3.25
Total		2.34		2.57		2.82
AVERAGE NGL PRICE PER BARREL
Permian	$	18.73	$	24.29	$	24.64
MidContinent/Gulf Coast		17.38		22.17		22.13
Gulf of Mexico		17.62		24.47		30.39
United States		18.47		23.81		24.02
Egypt		37.66		34.43		36.19
North Sea		40.60		42.94		42.82
International		39.47		39.77		39.87
Total		19.49		24.42		24.65

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APACHE CORPORATION

SUPPLEMENTAL FINANCIAL INFORMATION

(Unaudited)

(In millions)

SUMMARY OF DERIVATIVE INSTRUMENT GAINS (LOSSES), NET

	For the Quarter Ended March 31,
	2019			2018
Derivative settlements – realized gain/(loss)	$	15		$	(42	)
Amortization of call and put premium		—			(5	)
Realized gain/(loss)		15			(47	)
Unrealized mark-to-market gain/(loss)		(45	)		49
	$	(30	)	$	2
SUMMARY EXPLORATION EXPENSE INFORMATION
	For the Quarter Ended March 31,
	2019			2018
Unproved leasehold impairments	$	23		$	16
Dry hole expense		10			20
Geological and geophysical expense		19			18
Exploration overhead and other		17			22
	$	69		$	76
SUMMARY CASH FLOW INFORMATION
	For the Quarter Ended March 31,
	2019			2018
Net cash provided by operating activities	$	598		$	615
Additions to oil and gas property		(744	)		(749	)
Additions to Altus gathering, processing, and transmission facilities		(119	)		(128	)
Altus equity method interests		(118	)		—
Other, net		43			(13	)
Net cash used in investing activities	$	(938	)	$	(890	)
Debt borrowings and payments, net		159			(150	)
Distributions to noncontrolling interest – Egypt		(107	)		(69	)
Dividends paid		(94	)		(95	)
Other		(5	)		(2	)
Net cash used in financing activities	$	(47	)	$	(316	)
SUMMARY BALANCE SHEET INFORMATION
	March 31, 2019			December 31, 2018
Cash and cash equivalents	$	327		$	714
Assets held for sale		217			—
Other current assets		1,960			1,973
Property and equipment, net		18,291			18,421
Other assets		956			474
Total assets	$	21,751		$	21,582
Current debt	$	339		$	151
Current liabilities		2,035			2,050
Long-term debt		8,094			8,093
Deferred credits and other noncurrent liabilities		2,674			2,476
Apache shareholders’ equity		6,989			7,130
Noncontrolling interest – Egypt		1,212			1,275
Noncontrolling interest – Altus		408			407
Total Liabilities and equity	$	21,751		$	21,582
Common shares outstanding at end of period		376			375

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APACHE CORPORATION

NON-GAAP FINANCIAL MEASURES

(In millions, except per share data)

Reconciliation of Net cash provided by operating activities to Adjusted EBITDAX

Management believes EBITDAX, or earnings before income tax expense, interest expense, depreciation, amortization and exploration expense is a widely accepted financial indicator, and useful for investors, to assess a company's ability to incur and service debt, fund capital expenditures, and make distributions to shareholders. We define adjusted EBITDAX, a non-GAAP financial measure, as EBITDAX adjusted for certain items presented in the accompanying reconciliation. Management uses adjusted EBITDAX to evaluate our ability to fund our capital expenditures, debt services and other operational requirements and to compare our results from period to period by eliminating the impact of certain items that management does not consider to be representative of the Company’s on-going operations. Management also believes adjusted EBITDAX facilitates investors and analysts in evaluating and comparing EBITDAX from period to period by eliminating differences caused by the existence and timing of certain operating expenses that would not otherwise be apparent on a GAAP basis. However, our presentation of adjusted EBITDAX may not be comparable to similar measures of other companies in our industry.

	For the Quarter Ended
	March 31, 2019			December 31, 2018			March 31, 2018
Net cash provided by operating activities	$	598		$	1,043		$	615
Adjustments:
Exploration expense other than dry hole expense and unproved leasehold impairments		36			34			40
Current income tax provision		186			185			198
Other adjustments to reconcile net income to net cash provided by operating activities		(9	)		(29	)		(39	)
Changes in operating assets and liabilities		138			(191	)		174
Financing costs, net (excluding loss on early extinguishment of debt)		97			93			99
Transaction, reorganization & separation costs		4			8			—
Adjusted EBITDAX (Non-GAAP)	$	1,050		$	1,143		$	1,087

Reconciliation of Income attributable to common stock to Adjusted earnings

Our presentation of adjusted earnings and adjusted earnings per share are non-GAAP measures because they exclude the effect of certain items included in Income Attributable to Common Stock. Management believes that adjusted earnings and adjusted earnings per share provides relevant and useful information, which is widely used by analysts, investors and competitors in our industry as well as by our management in assessing the Company’s operational trends and comparability of results to our peers.

Management uses adjusted earnings and adjusted earnings per share to evaluate our operating and financial performance because it eliminates the impact of certain items that management does not consider to be representative of the Company’s on-going business operations. As a performance measure, adjusted earnings may be useful to investors in facilitating comparisons to others in the Company’s industry because certain items can vary substantially in the oil and gas industry from company to company depending upon accounting methods, book value of assets, capital structure and asset sales and other divestitures, among other factors. Management believes excluding these items facilitates investors and analysts in evaluating and comparing the underlying operating and financial performance of our business from period to period by eliminating differences caused by the existence and timing of certain expense and income items that would not otherwise be apparent on a GAAP basis. However, our presentation of adjusted earnings and adjusted earnings per share may not be comparable to similar measures of other companies in our industry.

	For the Quarter Ended March 31, 2019												For the Quarter Ended March 31, 2018
	Before Tax			Tax Impact			After Tax			Diluted EPS			Before Tax			Tax Impact			After Tax			Diluted EPS
Income including noncontrolling interest (GAAP)	$	165		$	(167	)	$	(2	)	$	(0.01	)	$	388		$	(182	)	$	206		$	0.54
Income attributable to noncontrolling interest		85			(40	)		45			0.11			112			(51	)		61			0.16
Net income attributable to common stock		80			(127	)		(47	)		(0.12	)		276			(131	)		145			0.38
Adjustments: *
Unrealized derivative instrument (gain)/loss		45			(10	)		35			0.10			(49	)		10			(39	)		(0.10	)
Valuation allowance and other tax adjustments		—			31			31			0.08			—			1			1			—
Asset impairments		23			(5	)		18			0.04			16			(3	)		13			0.03
Transaction, reorganization & separation costs		4			(1	)		3			0.01			—			—			—			—
Modification of stock comp plans		—			—			—			—			14			(4	)		10			0.02
Gain on divestitures		(3	)		1			(2	)		(0.01	)		(7	)		1			(6	)		(0.01	)
Adjusted earnings (Non-GAAP)	$	149		$	(111	)	$	38		$	0.10		$	250		$	(126	)	$	124		$	0.32

* The income tax effect of the reconciling items are calculated based on the statutory rate of the jurisdiction in which the discrete item resides.

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APACHE CORPORATION

NON-GAAP FINANCIAL MEASURES

(In millions)

Reconciliation of Debt to Net debt

Net debt, or outstanding debt obligations less cash and cash equivalents, is a non-GAAP financial measure. Management uses net debt as a measure of the Company's outstanding debt obligations that would not be readily satisfied by its cash and cash equivalents on hand.

	March 31, 2019		December 31, 2018		September 30, 2018		June 30, 2018		March 31, 2018
Current debt	$	339	$	151	$	151	$	401	$	401
Long-term debt		8,094		8,093		8,092		7,976		7,975
Total debt		8,433		8,244		8,243		8,377		8,376
Cash and cash equivalents		327		714		593		972		1,077
Net debt	$	8,106	$	7,530	$	7,650	$	7,405	$	7,299

Reconciliation of Costs incurred to Upstream capital investment

Management believes the presentation of upstream capital investments is useful for investors to assess Apache's expenditures related to our upstream capital activity. We define capital investments as costs incurred for oil and gas activities, adjusted to exclude asset retirement obligation revisions and liabilities incurred, capitalized interest, and certain exploration expenses, while including amounts paid during the period for abandonment and decommissioning expenditures. Upstream capital expenditures attributable to a one-third noncontrolling interest in Egypt are also excluded. Management believes this provides a more accurate reflection of Apache's cash expenditures related to upstream capital activity and is consistent with how we plan our capital budget.

	For the Quarter Ended March 31,
	2019			2018
Costs incurred in oil and gas property:
Acquisitions
Proved	$	—		$	5
Unproved		19			7
Exploration and development		655			817
Total Costs incurred in oil and gas property	$	674		$	829
Reconciliation of Costs incurred to Upstream capital investment:
Total Costs incurred in oil and gas property	$	674		$	829
Asset retirement obligations settled vs. incurred – oil and gas property		10			6
Capitalized interest		(8	)		(11	)
Exploration expense other than dry hole expense and unproved leasehold impairments		(36	)		(40	)
Less noncontrolling interest		(43	)		(52	)
Total Upstream capital investment	$	597		$	732

Reconciliation of Net cash provided by operating activities to Cash flows from operations before changes in operating assets and liabilities

Cash flows from operations before changes in operating assets and liabilities is a non-GAAP financial measure. Apache uses it internally and provides the information because management believes it is useful for investors and widely accepted by those following the oil and gas industry as a financial indicator of a company's ability to generate cash to internally fund exploration and development activities, fund dividend programs, and service debt. It is also used by research analysts to value and compare oil and gas exploration and production companies and is frequently included in published research when providing investment recommendations. Cash flows from operations before changes in operating assets and liabilities, therefore, is an additional measure of liquidity but is not a measure of financial performance under GAAP and should not be considered as an alternative to cash flows from operating, investing, or financing activities.

	For the Quarter Ended
	March 31, 2019		December 31, 2018			March 31, 2018
Net cash provided by operating activities	$	598	$	1,043		$	615
Changes in operating assets and liabilities		138		(191	)		174
Cash flows from operations before changes in operating assets and liabilities	$	736	$	852		$	789

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