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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2005 2006 2007 2008 2009 2010 View
History
Proved Reserves as of 12/31
17,586 17,093 17,154 15,614 17,116 19,545 1977-2010
Changes in Reserves During Year
             
Adjustments (+,-)
223 93 65 276 -4 144 1977-2010
Revision Increases (+)
1,356 1,506 1,791 1,094 2,483 3,032 1977-2010
Revision Decreases (-)
889 1,353 1,044 2,691 862 1,494 1977-2010
Sales (-)
786 982 802 312 205 725 2000-2010
Acquisitions (+)
1,064 1,176 776 478 307 1,330 2000-2010
Extensions (+)
749 404 611 774 1,130 1,465 1977-2010
New Field Discoveries (+)
205 30 21 141 113 88 1977-2010
New Reservoir Discoveries in Old Fields (+)
41 43 73 124 81 161 1977-2010
Estimated Production (-)
1,421 1,410 1,430 1,424 1,541 1,572 1977-2010
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous includes Arizona, Missouri, Nevada, New York, South Dakota, Tennessee, and Virginia. The production estimates in this table are based on data reported on Form EIA-23, "Annual Survey of Domestic Oil and Gas Reserves." They many differ from the official Energy Information Administration production data for crude oil contained in the "Petroleum Supply Annual."  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 8/2/2012
Next Release Date: 8/30/2013