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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
1,731 1,717 1,796 1,745 1,956 2,176 1977-2010
Changes in Reserves During Year
             
Adjustments (+,-)
11 2 14 1 5 -90 1977-2010
Revision Increases (+)
172 119 194 89 197 222 1977-2010
Revision Decreases (-)
96 102 84 236 93 143 1977-2010
Sales (-)
193 42 101 34 63 115 2000-2010
Acquisitions (+)
325 75 95 122 80 299 2000-2010
Extensions (+)
70 44 71 121 199 166 1977-2010
New Field Discoveries (+)
0 0 0 0 0 0 1977-2010
New Reservoir Discoveries in Old Fields (+)
0 1 3 4 4 1 1977-2010
Estimated Production (-)
110 111 113 118 118 120 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