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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2007 2008 2009 2010 2011 2012 View
History
Proved Reserves as of 12/31
3,905 3,903 4,129 4,496 4,976 5,131 1980-2012
Changes in Reserves During Year
             
Adjustments (+,-)
3 3 8 -8 -1 -148 1980-2012
Revision Increases (+)
372 249 638 820 1,910 1,204 1980-2012
Revision Decreases (-)
324 220 172 177 1,400 745 1980-2012
Sales (-)
218 33 15 43 34 182 2000-2012
Acquisitions (+)
219 34 15 98 33 275 2000-2012
Extensions (+)
122 162 153 70 27 144 1980-2012
New Field Discoveries (+)
18 128 87 8 408 7 1980-2012
New Reservoir Discoveries in Old Fields (+)
56 85 63 141 1 34 1980-2012
Estimated Production (-)
439 410 551 542 464 434 1980-2012
- = 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: 4/10/2014
Next Release Date: 4/30/2015