Exploratory Well Costs

12 Months Ended

Dec. 31, 2013

Exploratory Well Costs [Abstract]

Exploratory Well Costs

15.  Exploratory Well Costs

EOG's net changes in capitalized exploratory well costs for the years ended December 31, 2013, 2012 and 2011 are presented below (in thousands):

	2013			2012			2011
Balance at January 1	$	49,116		$	61,111		$	99,801
Additions Pending the Determination of Proved Reserves		52,099			73,332			31,271
Reclassifications to Proved Properties		(54,505	)		(69,462	)		(29,227	)
Costs Charged to Expense (1)		(35,859	)		(17,115	)		(42,178	)
Foreign Currency Translations		(1,640	)		1,250			1,444
Balance at December 31	$	9,211		$	49,116		$	61,111

(1)Includes capitalized exploratory well costs charged to either dry hole costs or impairments.

The following table provides an aging of capitalized exploratory well costs at December 31, 2013, 2012 and 2011 (in thousands, except well count):

	2013		2012			2011
Capitalized exploratory well costs that have been capitalized for a period less than one year	$	9,211	$	28,319		$	17,009
Capitalized exploratory well costs that have been capitalized for a period greater than one year		-		20,797	(1)		44,102	(2)
Total	$	9,211	$	49,116		$	61,111
Number of exploratory wells that have been capitalized for a period greater than one year		-		1			4

(1) Consists of costs related to an outside operated, offshore Central North Sea natural gas project in the United Kingdom (U.K.).

(2) Consists of costs related to an outside operated, offshore Central North Sea project in the U.K. ($20 million), an East Irish Sea project in the U.K. ($9 million), a project in the Sichuan Basin, Sichuan Province, China ($9 million), and a shale project in British Columbia, Canada ($6 million).