Supplemental Oil and Gas Disclosures (Unaudited)

12 Months Ended

Dec. 31, 2016

Supplemental Oil and Gas Disclosures (Unaudited)

SUPPLEMENTAL OIL AND GAS DISCLOSURES (Unaudited)

Oil and Gas Operations

The following table sets forth revenue and direct cost information relating to the Company’s oil and gas exploration and production activities. Apache has no long-term agreements to purchase oil or gas production from foreign governments or authorities. In the second quarter of 2015, Apache completed the sale of its Australian LNG business and oil and gas assets, and as such the results of Australia oil and gas assets have been classified as discontinued operations.



	United States			Canada			Egypt⁽³⁾		North Sea			Other International			Total⁽³⁾⁽⁴⁾
	(In millions, except per boe)
2016
Oil and gas production revenues	$	1,997		$	343		$	2,057	$	970		$	—		$	5,367
Operating cost:
Depreciation, depletion, and amortization⁽¹⁾	1,055			174			733		498			—			2,460
Asset retirement obligation accretion	34			47			—		75			—			156
Lease operating expenses	553			181			446		314			—			1,494
Gathering and transportation	80			68			44		8			—			200
Exploration expenses	285			88			48		37			15			473
Impairments related to oil and gas properties	61			366			—		—			—			427
Production taxes⁽²⁾	135			18			—		(33		)	—			120
Income tax	(72		)	(162		)	354		28			—			148
	2,131			780			1,625		927			15			5,478
Results of operation	$	(134	)	$	(437	)	$	432	$	43		$	(15	)	$	(111	)
2015
Oil and gas production revenues	$	2,637		$	498		$	2,095	$	1,280		$	—		$	6,510
Operating cost:
Depreciation, depletion, and amortization⁽¹⁾	1,455			251			780		490			—			2,976
Asset retirement obligation accretion	28			43			—		74			—			145
Lease operating expenses	739			244			522		349			—			1,854
Gathering and transportation	68			89			45		9			—			211
Exploration expenses	2,145			231			154		237			4			2,771
Impairments related to oil and gas properties	6,154			1,031			193		11			—			7,389
Production taxes⁽²⁾	178			23			—		58			—			259
Income tax	(2,886		)	(369		)	180		26			—			(3,049		)
	7,881			1,543			1,874		1,254			4			12,556
Results of operation	$	(5,244	)	$	(1,045	)	$	221	$	26		$	(4	)	$	(6,046	)
2014
Oil and gas production revenues	$	5,744		$	1,092		$	3,643	$	2,316		$	—		$	12,795
Operating cost:
Depreciation, depletion, and amortization⁽¹⁾	2,294			382			735		784			—			4,195
Asset retirement obligation accretion	43			39			—		72			—			154
Lease operating expenses	921			384			499		434			—			2,238
Gathering and transportation	93			123			40		17			—			273
Exploration expenses	2,113			162			112		119			(7		)	2,499
Impairments related to oil and gas properties	2,372			1,645			173		1,878			—			6,068
Production taxes⁽²⁾	342			27			—		177			—			546
Income tax	(864		)	(421		)	938		(723		)	—			(1,070		)
	7,314			2,341			2,497		2,758			(7		)	14,903
Results of operation	$	(1,570	)	$	(1,249	)	$	1,146	$	(442	)	$	7		$	(2,108	)


(1)	This amount only reflects DD&A of capitalized costs of oil and gas properties and, therefore, does not agree with DD&A reflected on Note 15—Business Segment Information.


(2)	Only reflects amounts directly related to oil and gas producing properties and, therefore, does not agree with taxes other than income reflected on Note 15—Business Segment Information.


(3)	Includes noncontrolling interest in Egypt.


(4)	Prior year amounts have been recast to exclude discontinued operations.

Costs Incurred in Oil and Gas Property Acquisitions, Exploration, and Development Activities



	United States			Canada			Egypt⁽²⁾		Australia		North Sea			Argentina		Other International		Total⁽²⁾
	(In millions)
2016
Acquisitions:
Proved	$	—		$	1		$	6	$	—	$	38		$	—	$	—	$	45
Unproved	110			7			49		—		4			—		—		170
Exploration	278			23			67		—		84			—		18		470
Development	420			27			353		—		150			—		—		950
Costs incurred⁽¹⁾	$	808		$	58		$	475	$	—	$	276		$	—	$	18	$	1,635
⁽¹⁾ Includes capitalized interest and asset retirement costs as follows:
Capitalized interest	$	21		$	6		$	—	$	—	$	21		$	—	$	—	$	48
Asset retirement costs	(51		)	(13		)	—		—		(128		)	—		—		(192		)
2015
Acquisitions:
Proved	$	1		$	8		$	29	$	—	$	—		$	—	$	—	$	38
Unproved	313			23			—		—		—			—		—		336
Exploration	194			51			125		32		246			—		29		677
Development	1,729			151			741		98		479			—		—		3,198
Costs incurred⁽¹⁾	$	2,237		$	233		$	895	$	130	$	725		$	—	$	29	$	4,249
⁽¹⁾Includes capitalized interest and asset retirement costs as follows:
Capitalized interest	$	—		$	—		$	8	$	6	$	7		$	—	$	—	$	21
Asset retirement costs	123			8			—		—		(66		)	—		—		65
2014
Acquisitions:
Proved	$	102		$	—		$	11	$	—	$	—		$	—	$	—	$	113
Unproved	1,221			141			—		16		—			—		—		1,378
Exploration	505			93			207		131		103			9		1		1,049
Development	5,078			789			1,122		990		956			6		—		8,941
Costs incurred⁽¹⁾	$	6,906		$	1,023		$	1,340	$	1,137	$	1,059		$	15	$	1	$	11,481
⁽¹⁾ Includes capitalized interest and asset retirement costs as follows:
Capitalized interest	$	17		$	—		$	9	$	90	$	29		$	3	$	—	$	148
Asset retirement costs	43			175			—		55		34			—		—		307
⁽²⁾ Includes a noncontrolling interest in Egypt.

Capitalized Costs

The following table sets forth the capitalized costs and associated accumulated depreciation, depletion, and amortization relating to the Company’s oil and gas acquisition, exploration, and development activities:



	United States			Canada			Egypt⁽¹⁾			North Sea			Other International		Total⁽¹⁾
	(In millions)
2016
Proved properties	$	19,170		$	5,434		$	10,169		$	7,920		$	—	$	42,693
Unproved properties	1,465			109			76			280			39		1,969
	20,635			5,543			10,245			8,200			39		44,662
Accumulated DD&A	(10,034		)	(4,120		)	(7,287		)	(5,531		)	—		(26,972		)
	$	10,601		$	1,423		$	2,958		$	2,669		$	39	$	17,690
2015
Proved properties	$	18,692		$	5,812		$	9,798		$	7,426		$	—	$	41,728
Unproved properties	1,615			172			25			429			36		2,277
	20,307			5,984			9,823			7,855			36		44,005
Accumulated DD&A	(9,027		)	(3,958		)	(6,559		)	(4,913		)	—		(24,457		)
	$	11,280		$	2,026		$	3,264		$	2,942		$	36	$	19,548
⁽¹⁾ Includes a noncontrolling interest in Egypt.

Oil and Gas Reserve Information

Proved oil and gas reserves are the estimated quantities of natural gas, crude oil, condensate, and natural gas liquids (NGLs) that geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing conditions, operating conditions, and government regulations. Estimated proved developed oil and gas reserves can be expected to be recovered through existing wells with existing equipment and operating methods. The Company reports all estimated proved reserves held under production-sharing arrangements utilizing the “economic interest” method, which excludes the host country’s share of reserves.

Estimated reserves that can be produced economically through application of improved recovery techniques are included in the “proved” classification when successful testing by a pilot project or the operation of an active, improved recovery program using reliable technology establishes the reasonable certainty for the engineering analysis on which the project or program is based. Economically producible means a resource which generates revenue that exceeds, or is reasonably expected to exceed, the costs of the operation. Reasonable certainty means a high degree of confidence that the quantities will be recovered. Reliable technology is a grouping of one or more technologies (including computational methods) that has been field-tested and has been demonstrated to provide reasonably certain results with consistency and repeatability in the formation being evaluated or in an analogous formation. In estimating its proved reserves, Apache uses several different traditional methods that can be classified in three general categories: 1) performance-based methods; 2) volumetric-based methods; and 3) analogy with similar properties. Apache will, at times, utilize additional technical analysis such as computer reservoir models, petrophysical techniques, and proprietary 3-D seismic interpretation methods to provide additional support for more complex reservoirs. Information from this additional analysis is combined with traditional methods outlined above to enhance the certainty of our reserve estimates.

There are numerous uncertainties inherent in estimating quantities of proved reserves and projecting future rates of production and timing of development expenditures. The reserve data in the following tables only represent estimates and should not be construed as being exact.



	Crude Oil and Condensate
	(Thousands of barrels)
	United States		Canada		Egypt⁽¹⁾		Australia		North Sea		Argentina		Total⁽¹⁾
Proved developed reserves:
December 31, 2013	457,981		80,526		119,242		22,524		100,327		14,195		794,795
December 31, 2014	444,440		75,876		128,712		29,996		105,746		—		784,770
December 31, 2015	348,797		67,847		144,164		—		104,255		—		665,063
December 31, 2016	300,900		51,508		138,771		—		91,138		—		582,317
Proved undeveloped reserves:
December 31, 2013	195,835		56,366		16,302		36,703		29,253		2,231		336,690
December 31, 2014	170,125		59,923		14,617		25,775		19,059		—		289,499
December 31, 2015	60,505		38,326		17,856		—		11,309		—		127,996
December 31, 2016	21,088		7,906		20,187		—		10,784		—		59,965
Total proved reserves:
Balance December 31, 2013	653,816		136,892		135,544		59,227		129,580		16,426		1,131,485
Extensions, discoveries and other additions	57,011		9,657		38,074		4,254		17,386		5		126,387
Purchase of minerals in-place	15,240		—		—		—		—		—		15,240
Revisions of previous estimates	3,083		(812	)	2,645		(216	)	(7	)	—		4,693
Production	(48,789	)	(6,421	)	(32,934	)	(7,494	)	(22,154	)	(620	)	(118,412	)
Sale of properties	(65,796	)	(3,517	)	—		—		—		(15,811	)	(85,124	)
Balance December 31, 2014	614,565		135,799		143,329		55,771		124,805		—		1,074,269
Extensions, discoveries and other additions	13,903		4,550		24,524		—		16,579		—		59,556
Purchase of minerals in-place	—		1,763		—		—		—		—		1,763
Revisions of previous estimates	(173,907	)	(27,966	)	27,330		11,189		(2,255	)	—		(165,609	)
Production	(45,138	)	(5,755	)	(33,163	)	(2,778	)	(21,657	)	—		(108,491	)
Sale of properties	(121	)	(2,218	)	—		(64,182	)	(1,908	)	—		(68,429	)
Balance December 31, 2015	409,302		106,173		162,020		—		115,564		—		793,059
Extensions, discoveries and other additions	9,614		3,372		17,599		—		9,766		—		40,351
Purchase of minerals in-place	21		—		—		—		438		—		459
Revisions of previous estimates	(58,882	)	(43,282	)	17,301		—		(3,851	)	—		(88,714	)
Production	(38,000	)	(4,787	)	(37,962	)	—		(19,995	)	—		(100,744	)
Sale of properties	(67	)	(2,062	)	—		—		—		—		(2,129	)
Balance December 31, 2016	321,988		59,414		158,958		—		101,922		—		642,282

(1) 2016, 2015, 2014, and 2013 includes proved reserves of 53 MMbbls, 54 MMbbls, 48 MMbbls, and 45 MMbbls, respectively, attributable to a noncontrolling interest in Egypt.



	Natural Gas Liquids
	(Thousands of barrels)
	United States		Canada		Egypt⁽¹⁾		Australia	North Sea		Argentina		Total⁽¹⁾
Proved developed reserves:
December 31, 2013	184,485		26,099		—		—	2,435		4,110		217,129
December 31, 2014	183,565		17,947		1,346		—	1,770		—		204,628
December 31, 2015	150,265		15,246		1,491		—	1,784		—		168,786
December 31, 2016	155,124		13,866		1,266		—	1,627		—		171,883
Proved undeveloped reserves:
December 31, 2013	63,538		9,970		—		—	215		1,009		74,732
December 31, 2014	69,828		7,168		212		—	371		—		77,579
December 31, 2015	24,939		4,839		78		—	295		—		30,151
December 31, 2016	17,311		2,473		131		—	646		—		20,561
Total proved reserves:
Balance December 31, 2013	248,023		36,069		—		—	2,650		5,119		291,861
Extensions, discoveries and other additions	47,516		1,163		1,820		—	1		—		50,500
Purchase of minerals in-place	2,916		—		—		—	—		—		2,916
Revisions of previous estimates	2,594		116		(11	)	—	(2	)	—		2,697
Production	(21,464	)	(2,256	)	(251	)	—	(508	)	(116	)	(24,595	)
Sale of properties	(26,192	)	(9,977	)	—		—	—		(5,003	)	(41,172	)
Balance December 31, 2014	253,393		25,115		1,558		—	2,141		—		282,207
Extensions, discoveries and other additions	5,768		1,473		144		—	689		—		8,074
Purchase of minerals in-place	—		976		—		—	—		—		976
Revisions of previous estimates	(64,226	)	(4,886	)	255		—	(321	)	—		(69,178	)
Production	(19,684	)	(2,236	)	(388	)	—	(413	)	—		(22,721	)
Sale of properties	(47	)	(357	)	—		—	(17	)	—		(421	)
Balance December 31, 2015	175,204		20,085		1,569		—	2,079		—		198,937
Extensions, discoveries and other additions	10,238		755		208		—	671		—		11,872
Purchase of minerals in-place	2		—		—		—	5		—		7
Revisions of previous estimates	6,824		(1,355	)	17		—	141		—		5,627
Production	(19,824	)	(2,098	)	(397	)	—	(623	)	—		(22,942	)
Sale of properties	(9	)	(1,048	)	—		—	—		—		(1,057	)
Balance December 31, 2016	172,435		16,339		1,397		—	2,273		—		192,444

(1) 2016, 2015, and 2014 includes proved reserves of 466 Mbbls, 523 Mbbls, and 519 Mbbls, respectively, attributable to a noncontrolling interest in Egypt.



	Natural Gas
	(Millions of cubic feet)
	United States		Canada		Egypt⁽¹⁾		Australia		North Sea		Argentina		Total⁽¹⁾
Proved developed reserves:
December 31, 2013	2,005,966		1,294,420		621,825		626,543		88,177		289,133		4,926,064
December 31, 2014	1,616,504		990,145		637,187		640,265		87,259		—		3,971,360
December 31, 2015	1,364,174		759,321		776,263		—		85,532		—		2,985,290
December 31, 2016	1,200,379		553,724		675,559		—		86,948		—		2,516,610
Proved undeveloped reserves:
December 31, 2013	667,160		439,037		190,355		975,224		18,988		121,584		2,412,348
December 31, 2014	580,299		527,623		171,696		964,554		23,228		—		2,267,400
December 31, 2015	208,594		162,809		53,969		—		19,760		—		445,132
December 31, 2016	231,304		45,312		42,109		—		23,813		—		342,538
Total proved reserves:
Balance December 31, 2013	2,673,126		1,733,457		812,180		1,601,767		107,165		410,717		7,338,412
Extensions, discoveries and other additions	203,318		383,077		125,899		81,156		23,803		—		817,253
Purchase of minerals in-place	21,337		—		—		—		—		—		21,337
Revisions of previous estimates	35,910		(12,626	)	17,326		—		(54	)	—		40,556
Production	(215,829	)	(117,816	)	(146,522	)	(78,104	)	(20,427	)	(12,722	)	(591,420	)
Sale of properties	(521,059	)	(468,324	)	—		—		—		(397,995	)	(1,387,378	)
Balance December 31, 2014	2,196,803		1,517,768		808,883		1,604,819		110,487		—		6,238,760
Extensions, discoveries and other additions	40,901		121,216		94,777		—		41,755		—		298,649
Purchase of minerals in-place	—		24,727		—		—		—		—		24,727
Revisions of previous estimates	(503,939	)	(325,375	)	61,442		8,162		(22,373	)	—		(782,083	)
Production	(160,614	)	(100,289	)	(134,870	)	(34,352	)	(23,647	)	—		(453,772	)
Sale of properties	(383	)	(315,917	)	—		(1,578,629	)	(930	)	—		(1,895,859	)
Balance December 31, 2015	1,572,768		922,130		830,232		—		105,292		—		3,430,422
Extensions, discoveries and other additions	219,633		30,234		35,202		—		20,814		—		305,883
Purchase of minerals in-place	7		—		—		—		6,677		—		6,684
Revisions of previous estimates	(215,378	)	(242,080	)	(4,305	)	—		4,239		—		(457,524	)
Production	(145,019	)	(88,792	)	(143,461	)	—		(26,261	)	—		(403,533	)
Sale of properties	(328	)	(22,456	)	—		—		—		—		(22,784	)
Balance December 31, 2016	1,431,683		599,036		717,668		—		110,761		—		2,859,148

(1) 2016, 2015, 2014, and 2013 include proved reserves of 239 Bcf, 277 Bcf, 270 Bcf, and 271 Bcf, respectively, attributable to a noncontrolling interest in Egypt.



	Total Equivalent Reserves
	(Thousands barrels of oil equivalent)
	United States		Canada		Egypt⁽¹⁾		Australia		North Sea		Argentina		Total⁽¹⁾
Proved developed reserves:
December 31, 2013	976,795		322,362		222,880		126,948		117,457		66,494		1,832,936
December 31, 2014	897,422		258,848		236,256		136,707		122,058		—		1,651,291
December 31, 2015	726,424		209,647		275,033		—		120,293		—		1,331,397
December 31, 2016	656,087		157,662		252,630		—		107,256		—		1,173,635
Proved undeveloped reserves:
December 31, 2013	370,566		139,509		48,028		199,240		32,633		23,504		813,480
December 31, 2014	336,670		155,028		43,446		186,534		23,301		—		744,979
December 31, 2015	120,210		70,300		26,929		—		14,897		—		232,336
December 31, 2016	76,950		17,931		27,336		—		15,399		—		137,616
Total proved reserves:
Balance December 31, 2013	1,347,361		461,871		270,908		326,188		150,090		89,998		2,646,416
Extensions, discoveries and other additions	138,413		74,666		60,877		17,780		21,354		5		313,095
Purchase of minerals in-place	21,712		—		—		—		—		—		21,712
Revisions of previous estimates	11,662		(2,800	)	5,522		(216	)	(18	)	—		14,150
Production	(106,225	)	(28,313	)	(57,605	)	(20,511	)	(26,067	)	(2,856	)	(241,577	)
Sale of properties	(178,831	)	(91,548	)	—		—		—		(87,147	)	(357,526	)
Balance December 31, 2014	1,234,092		413,876		279,702		323,241		145,359		—		2,396,270
Extensions, discoveries and other additions	26,488		26,226		40,464		—		24,227		—		117,405
Purchase of minerals in-place	—		6,860		—		—		—		—		6,860
Revisions of previous estimates	(322,123	)	(87,081	)	37,825		12,549		(6,305	)	—		(365,135	)
Production	(91,591	)	(24,706	)	(56,029	)	(8,503	)	(26,011	)	—		(206,840	)
Sale of properties	(232	)	(55,228	)	—		(327,287	)	(2,080	)	—		(384,827	)
Balance December 31, 2015	846,634		279,947		301,962		—		135,190		—		1,563,733
Extensions, discoveries and other additions	56,458		9,166		23,674		—		13,906		—		103,204
Purchase of minerals in-place	24		—		—		—		1,556		—		1,580
Revisions of previous estimates	(87,954	)	(84,984	)	16,599		—		(3,002	)	—		(159,341	)
Production	(81,994	)	(21,684	)	(62,269	)	—		(24,995	)	—		(190,942	)
Sale of properties	(131	)	(6,852	)	—		—		—		—		(6,983	)
Balance December 31, 2016	733,037		175,593		279,966		—		122,655		—		1,311,251

(1) 2016, 2015, 2014, and 2013 include total proved reserves of 93 MMboe, 101 MMboe, 93 MMboe, and 90 MMboe, respectively, attributable to a noncontrolling interest in Egypt.

During 2016, Apache sold a combined 7 MMboe primarily through divestiture transactions in Canada. The Company added 2 MMboe of estimated proved reserves through purchases of minerals in-place and 103 MMboe from extensions, discoveries, and other additions. The Company recorded 66 MMboe of exploration and development adds in North America, primarily associated with Woodford, Bone Springs, and Wolfcamp drilling programs in the Permian Basin (49 MMboe), Montney and Glauconite drilling in Canada (9 MMboe), and Woodford drilling activity in the MidContinent region (8 MMboe).

The international regions contributed 37 MMboe of exploration and development adds during 2016 with Egypt contributing 23 MMboe from onshore exploration and appraisal activity in the Khalda, Khalda 2, and East Beni Suef concessions. The North Sea offshore region contributed 14 MMboe from drilling success in the Beryl, Forties, and Nevis fields.

During 2016, Apache also had combined downward revisions of previously estimated reserves of 159 MMboe. Changes in product prices accounted for 172 MMboe, lease ownership changes accounted for 6 MMboe, offset by engineering and performance upward revisions totaling 19 MMboe.

Approximately 9 percent of Apache’s year-end 2016 estimated proved developed reserves are classified as proved not producing. These reserves relate to zones that are either behind pipe, or that have been completed but not yet produced, or zones that have been produced in the past, but are not now producing because of mechanical reasons. These reserves are considered to be a lower tier of reserves than producing reserves because they are frequently based on volumetric calculations rather than performance data. Future production associated with behind pipe reserves is scheduled to follow depletion of the currently producing zones in the same wellbores. Additional capital may have to be spent to access these reserves. The capital and economic impact of production timing are reflected in this Note 16, under “Future Net Cash Flows.”

Future Net Cash Flows

Future cash inflows as of December 31, 2016 and 2015 were calculated using an unweighted arithmetic average of oil and gas prices in effect on the first day of each month in the respective year, except where prices are defined by contractual arrangements. Operating costs, production and ad valorem taxes and future development costs are based on current costs with no escalation.

The following table sets forth unaudited information concerning future net cash flows for proved oil and gas reserves, net of income tax expense. Income tax expense has been computed using expected future tax rates and giving effect to tax deductions and credits available, under current laws, and which relate to oil and gas producing activities. This information does not purport to present the fair market value of the Company’s oil and gas assets, but does present a standardized disclosure concerning possible future net cash flows that would result under the assumptions used.



	United States			Canada			Egypt⁽²⁾			North Sea			Total⁽²⁾
	(In millions)
2016
Cash inflows	$	20,067		$	3,625		$	8,778		$	4,734		$	37,204
Production costs	(8,858		)	(2,582		)	(1,967		)	(2,255		)	(15,662		)
Development costs	(1,653		)	(1,565		)	(1,111		)	(2,410		)	(6,739		)
Income tax expense	(32		)	—			(1,775		)	(8		)	(1,815		)
Net cash flows	9,524			(522		)	3,925			61			12,988
10 percent discount rate	(5,319		)	549			(956		)	798			(4,928		)
Discounted future net cash flows⁽¹⁾	$	4,205		$	27		$	2,969		$	859		$	8,060
2015
Cash inflows	$	26,610		$	7,345		$	11,124		$	6,994		$	52,073
Production costs	(12,178		)	(3,841		)	(2,185		)	(3,209		)	(21,413		)
Development costs	(2,255		)	(1,939		)	(1,515		)	(2,346		)	(8,055		)
Income tax expense	(63		)	—			(2,326		)	(691		)	(3,080		)
Net cash flows	12,114			1,565			5,098			748			19,525
10 percent discount rate	(6,876		)	(868		)	(1,330		)	143			(8,931		)
Discounted future net cash flows⁽¹⁾	$	5,238		$	697		$	3,768		$	891		$	10,594


(1)	Estimated future net cash flows before income tax expense, discounted at 10 percent per annum, totaled approximately $9.5 billion and $13.1 billion as of December 31, 2016 and 2015, respectively.


(2)	Includes discounted future net cash flows of approximately $1.0 billion and $1.3 billion in 2016 and 2015, respectively, attributable to a noncontrolling interest in Egypt.

The following table sets forth the principal sources of change in the discounted future net cash flows:



	For the Year Ended December 31,
	2016			2015			2014
	(In millions)
Sales, net of production costs	$	(3,479	)	$	(4,056	)	$	(10,350	)
Net change in prices and production costs	(3,835		)	(21,710		)	(1,029		)
Discoveries and improved recovery, net of related costs	1,153			1,953			6,297
Change in future development costs	309			705			(1,136		)
Previously estimated development costs incurred during the period	986			1,991			4,462
Revision of quantities	(574		)	(2,292		)	256
Purchases of minerals in-place	8			22			508
Accretion of discount	1,313			3,642			4,442
Change in income taxes	1,070			7,264			836
Sales of properties	(52		)	(5,240		)	(4,780		)
Change in production rates and other	567			(3,343		)	(442		)
	$	(2,534	)	$	(21,064	)	$	(936	)