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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
3,914 4,438 4,504 4,503 4,244 3,825 1981-2015
Changes in Reserves During Year
             
Adjustments (+,-)
-6 -2 -90 -264 121 -44 1981-2015
Revision Increases (+)
746 1,831 1,047 544 625 602 1981-2015
Revision Decreases (-)
155 1,328 717 308 796 582 1981-2015
Sales (-)
41 34 180 265 57 55 2000-2015
Acquisitions (+)
92 29 234 210 65 37 2000-2015
Extensions (+)
57 27 112 138 79 55 1981-2015
New Field Discoveries (+)
8 408 7 179 132 20 1981-2015
New Reservoir Discoveries in Old Fields (+)
133 1 20 149 6 18 1981-2015
Estimated Production (-)
490 408 367 384 434 470 1981-2015
- = 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