Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors.
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Name Accounting Standards Codification
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Name Statement of Financial Accounting Standard (FAS)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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