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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2004 2005 2006 2007 2008 2009 View
History
Proved Reserves as of 12/31
17,044 17,586 17,093 17,154 15,614 17,116 1977-2009
Changes in Reserves During Year
             
Adjustments (+,-)
75 223 93 65 276 -4 1977-2009
Revision Increases (+)
1,748 1,356 1,506 1,791 1,094 2,483 1977-2009
Revision Decreases (-)
1,375 889 1,353 1,044 2,691 862 1977-2009
Sales (-)
937 786 982 802 312 205 2000-2009
Acquisitions (+)
960 1,064 1,176 776 478 307 2000-2009
Extensions (+)
506 749 404 611 774 1,130 1977-2009
New Field Discoveries (+)
33 205 30 21 141 113 1977-2009
New Reservoir Discoveries in Old Fields (+)
74 41 43 73 124 81 1977-2009
Estimated Production (-)
1,485 1,421 1,410 1,430 1,424 1,541 1977-2009
- = 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: 12/30/2010
Next Release Date: 12/30/2011