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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
3,435 3,389 3,322 2,705 2,835 2,938 1977-2010
Changes in Reserves During Year
             
Adjustments (+,-)
16 13 -6 74 -17 13 1977-2010
Revision Increases (+)
177 243 248 170 427 276 1977-2010
Revision Decreases (-)
70 125 144 685 119 167 1977-2010
Sales (-)
4 120 10 19 3 1 2000-2010
Acquisitions (+)
23 130 38 20 20 156 2000-2010
Extensions (+)
147 27 27 42 30 24 1977-2010
New Field Discoveries (+)
0 0 0 0 0 0 1977-2010
New Reservoir Discoveries in Old Fields (+)
0 8 0 2 0 0 1977-2010
Estimated Production (-)
230 222 220 221 208 198 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