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Exploratory Well Costs (Notes) | 3 Months Ended
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Mar. 31, 2020
Capitalized Exploratory Well Costs [Abstract] |
Exploratory Well Costs | Exploratory Well Costs EOG's net changes in capitalized exploratory well costs for the three-month period ended March 31, 2020, are presented below (in thousands):
| Three Months Ended March 31, 2020
Balance at January 1 | $ | 25,897 |
Additions Pending the Determination of Proved Reserves | 25,068 |
Reclassifications to Proved Properties | (2,178 | )
Costs Charged to Expense (1) | (4,474 | )
Balance at March 31 | $ | 44,313 |
(1) | Includes capitalized exploratory well costs charged to either dry hole costs or impairments.
At March 31, 2020, all capitalized exploratory well costs had been capitalized for periods of less than one year.

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- Definition The entire disclosure for parts or all of the information related to suspended well costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=68064819&loc=SL6806780-109447 + Details
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