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Segment Information (Tables)

6 Months Ended

Jun. 30, 2011

Summary Financial Information for Company's Reportable Segments Table

	Exploration
	and		Midstream
	Production		Services	Other		Total
	(in thousands)
Three months ended June 30, 2011:
Revenues from external customers	$ 526,969		$ 238,197	$ 0		$ 765,166
Intersegment revenues	2,899		522,412	793		526,104
Operating income	222,539		59,644	359		282,542
Other income, net⁽¹⁾	6		52	11		69
Depreciation, depletion and amortization expense	161,929		9,365	326		171,620
Interest expense⁽¹⁾	799		5,371	0		6,170
Provision for income taxes⁽¹⁾	87,492		21,349	146		108,987
Assets	5,366,199	⁽²⁾	1,095,685	280,217	⁽³⁾	6,742,101
Capital investments⁽⁴⁾	476,040		59,862	20,072		555,974

Three months ended June 30, 2010:
Revenues from external customers	$ 419,149		$ 170,794	$ 0		$ 589,943
Intersegment revenues	2,706		388,064	246		391,016
Operating income	162,473		43,767	77		206,317
Other income (loss), net⁽¹⁾	(107)		11	12		(84)
Depreciation, depletion and amortization expense	136,905		6,986	115		144,006
Interest expense⁽¹⁾	704		5,476	0		6,180
Provision for income taxes⁽¹⁾	63,072		14,938	34		78,044
Assets	4,272,197	⁽²⁾	839,959	478,195	⁽³⁾	5,590,351
Capital investments⁽⁴⁾	441,226		89,753	12,546		543,525


	Exploration
	and		Midstream
	Production		Services	Other		Total
	(in thousands)
Six months ended June 30, 2011:
Revenues from external customers	$ 997,625		$ 443,876	$ 0		$ 1,441,501
Intersegment revenues	8,413		996,001	1,569		1,005,983
Operating income	400,822		113,561	810		515,193
Other income, net⁽¹⁾	349		81	13		443
Depreciation, depletion and amortization expense	316,739		17,756	572		335,067
Interest expense⁽¹⁾	3,703		9,903	0		13,606
Provision for income taxes⁽¹⁾	156,874		40,769	324		197,967
Assets	5,366,199	⁽²⁾	1,095,685	280,217	⁽³⁾	6,742,101
Capital investments⁽⁴⁾	944,252		105,840	36,411		1,086,503

Six months ended June 30, 2010:
Revenues from external customers	$ 904,220		$ 353,840	$ 0		$ 1,258,060
Intersegment revenues	9,704		836,661	492		846,857
Operating income	412,904		81,391	112		494,407
Other income (loss), net⁽¹⁾	(152)		79	12		(61)
Depreciation, depletion and amortization expense	269,612		13,147	264		283,023
Interest expense⁽¹⁾	3,004		9,684	0		12,688
Provision for income taxes⁽¹⁾	159,837		27,997	47		187,881
Assets	4,272,197	⁽²⁾	839,959	478,195	⁽³⁾	5,590,351
Capital investments⁽⁴⁾	852,659		139,019	25,472		1,017,150

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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