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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
3,376 3,435 3,389 3,322 2,705 2,835 1977-2009
Changes in Reserves During Year
             
Adjustments (+,-)
3 16 13 -6 74 -17 1977-2009
Revision Increases (+)
210 177 243 248 170 427 1977-2009
Revision Decreases (-)
97 70 125 144 685 119 1977-2009
Sales (-)
142 4 120 10 19 3 2000-2009
Acquisitions (+)
147 23 130 38 20 20 2000-2009
Extensions (+)
42 147 27 27 42 30 1977-2009
New Field Discoveries (+)
0 0 0 0 0 0 1977-2009
New Reservoir Discoveries in Old Fields (+)
0 0 8 0 2 0 1977-2009
Estimated Production (-)
239 230 222 220 221 208 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