Suspended Well Costs (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of capitalized exploratory well costs

	Three months ended March 31, 2013
	(In thousands)
Beginning balance	$	372,492
Additions to capitalized exploratory well costs pending the determination of proved reserves	937
Reclassification due to determination of proved reserves	—
Capitalized exploratory well costs charged to expense	(1,705		)
Ending balance	$	371,724

Schedule of aging of capitalized exploratory well costs and number of projects for which exploratory well costs were capitalized for more than one year

	March 31, 2013		December 31, 2012
	(In thousands, except well counts)
Exploratory well costs capitalized for a period of one year or less	$	56,903	$	106,635
Exploratory well costs capitalized for a period one to two years	215,320		179,933
Exploratory well costs capitalized for a period three to four years	99,501		85,924
Ending balance	$	371,724	$	372,492
Number of projects that have exploratory well costs that have been capitalized for a period greater than one year	7		7

- Definition

Tabular disclosure of the amount of exploratory well costs that have been capitalized after the completion of drilling and the number of projects for which those costs relate. Additionally, for exploratory well costs that have been capitalized for periods greater than one year at the most recent balance sheet date, this block of text may be used to disclose an aging of those amounts by year, or by using a range of years, and the number of projects to which those costs relate.

+ References+ Details