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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
1,552 1,731 1,717 1,796 1,745 1,956 1977-2009
Changes in Reserves During Year
             
Adjustments (+,-)
7 11 2 14 1 5 1977-2009
Revision Increases (+)
120 172 119 194 89 197 1977-2009
Revision Decreases (-)
95 96 102 84 236 93 1977-2009
Sales (-)
81 193 42 101 34 63 2000-2009
Acquisitions (+)
129 325 75 95 122 80 2000-2009
Extensions (+)
67 70 44 71 121 199 1977-2009
New Field Discoveries (+)
1 0 0 0 0 0 1977-2009
New Reservoir Discoveries in Old Fields (+)
0 0 1 3 4 4 1977-2009
Estimated Production (-)
109 110 111 113 118 118 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