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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2010 2011 2012 2013 2014 2015 View
History
Proved Reserves as of 12/31
19,545 22,728 27,193 30,473 33,530 30,284 1977-2015
Changes in Reserves During Year
             
Adjustments (+,-)
144 199 110 -621 515 1,153 1977-2015
Revision Increases (+)
3,032 4,248 4,235 3,943 5,077 4,073 1977-2015
Revision Decreases (-)
1,494 3,101 2,933 3,120 4,798 8,282 1977-2015
Sales (-)
725 791 734 1,327 2,032 873 2000-2015
Acquisitions (+)
1,330 1,209 1,150 1,785 2,234 798 2000-2015
Extensions (+)
1,465 2,531 4,403 4,361 4,395 2,757 1977-2015
New Field Discoveries (+)
88 477 53 188 151 20 1977-2015
New Reservoir Discoveries in Old Fields (+)
161 59 122 319 207 38 1977-2015
Estimated Production (-)
1,572 1,648 1,941 2,248 2,692 2,930 1977-2015
- = 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, Idaho, 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: 12/14/2016
Next Release Date: 11/30/2017