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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2008 2009 2010 2011 2012 2013 View
History
Proved Reserves as of 12/31
3,903 4,129 4,496 4,976 5,131 5,137 1980-2013
Changes in Reserves During Year
             
Adjustments (+,-)
3 8 -8 -1 -148 -246 1980-2013
Revision Increases (+)
249 638 820 1,910 1,204 629 1980-2013
Revision Decreases (-)
220 172 177 1,400 745 349 1980-2013
Sales (-)
33 15 43 34 182 286 2000-2013
Acquisitions (+)
34 15 98 33 275 233 2000-2013
Extensions (+)
162 153 70 27 144 156 1980-2013
New Field Discoveries (+)
128 87 8 408 7 179 1980-2013
New Reservoir Discoveries in Old Fields (+)
85 63 141 1 34 149 1980-2013
Estimated Production (-)
410 551 542 464 434 459 1980-2013
- = 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 may 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: 12/4/2014
Next Release Date: 12/31/2015