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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
4,483 4,096 3,905 3,903 4,129 4,496 1980-2010
Changes in Reserves During Year
             
Adjustments (+,-)
0 -3 3 3 8 -8 1980-2010
Revision Increases (+)
253 471 372 249 638 820 1980-2010
Revision Decreases (-)
305 555 324 220 172 177 1980-2010
Sales (-)
42 257 218 33 15 43 2000-2010
Acquisitions (+)
24 272 219 34 15 98 2000-2010
Extensions (+)
68 71 122 162 153 70 1980-2010
New Field Discoveries (+)
201 21 18 128 87 8 1980-2010
New Reservoir Discoveries in Old Fields (+)
29 24 56 85 63 141 1980-2010
Estimated Production (-)
436 431 439 410 551 542 1980-2010
- = 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