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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
19,121 20,682 23,267 26,544 30,529 33,371 1899-2013
Changes in Reserves During Year
             
Adjustments (+,-)
278 -4 144 199 109 -620 1977-2013
Revision Increases (+)
1,196 2,877 3,429 4,555 4,319 4,030 1977-2013
Revision Decreases (-)
3,235 1,014 1,570 3,230 3,384 3,512 1977-2013
Sales (-)
312 212 725 808 734 1,327 2000-2013
Acquisitions (+)
478 307 1,330 1,288 1,150 1,787 2000-2013
Extensions (+)
805 1,155 1,495 2,571 4,462 4,395 1977-2013
New Field Discoveries (+)
142 122 88 477 53 188 1977-2013
New Reservoir Discoveries in Old Fields (+)
124 81 161 59 122 319 1977-2013
Estimated Production (-)
1,672 1,751 1,767 1,834 2,112 2,418 1977-2013
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: The volumes in the table above are crude oil ONLY (aka Black Oil), excluding lease condensate. 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