Exploratory Well Costs (Tables)

9 Months Ended

Sep. 30, 2021

Capitalized Exploratory Well Costs [Abstract]

Net Changes In Capitalized Exploratory Well Costs

EOG's net changes in capitalized exploratory well costs for the nine-month period ended September 30, 2021, are presented below (in millions):

	Nine Months Ended September 30, 2021
Balance at January 1	$	29
Additions Pending the Determination of Proved Reserves	48
Reclassifications to Proved Properties	(4)
Costs Charged to Expense (1)	(12)
Balance at September 30	$	61

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

Schedule of Aging of Capitalized Exploratory Well Costs

	Nine Months Ended September 30, 2021
Capitalized exploratory well costs that have been capitalized for a period of one year or less	$	46
Capitalized exploratory well costs that have been capitalized for a period greater than one year (1)	15
Balance at September 30	$	61
Number of exploratory wells that have been capitalized for a period greater than one year	1

(1)Consists of costs related to a project in Trinidad at September 30, 2021.