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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
15,614 17,116 19,545 22,728 27,193 30,473 1977-2013
Changes in Reserves During Year
             
Adjustments (+,-)
276 -4 144 199 110 -621 1977-2013
Revision Increases (+)
1,094 2,483 3,032 4,248 4,235 3,943 1977-2013
Revision Decreases (-)
2,691 862 1,494 3,101 2,933 3,120 1977-2013
Sales (-)
312 205 725 791 734 1,327 2000-2013
Acquisitions (+)
478 307 1,330 1,209 1,150 1,785 2000-2013
Extensions (+)
774 1,130 1,465 2,531 4,403 4,361 1977-2013
New Field Discoveries (+)
141 113 88 477 53 188 1977-2013
New Reservoir Discoveries in Old Fields (+)
124 81 161 59 122 319 1977-2013
Estimated Production (-)
1,424 1,541 1,572 1,648 1,941 2,248 1977-2013
- = 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