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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
4,613 4,919 4,871 5,122 4,555 5,006 1977-2009
Changes in Reserves During Year
             
Adjustments (+,-)
71 64 50 65 46 -11 1977-2009
Revision Increases (+)
401 455 340 575 222 544 1977-2009
Revision Decreases (-)
261 229 312 241 848 196 1977-2009
Sales (-)
229 520 100 212 104 102 2000-2009
Acquisitions (+)
281 723 198 222 215 189 2000-2009
Extensions (+)
125 163 128 183 238 365 1977-2009
New Field Discoveries (+)
2 2 1 2 0 1 1977-2009
New Reservoir Discoveries in Old Fields (+)
0 3 2 7 12 4 1977-2009
Estimated Production (-)
360 355 355 350 348 343 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