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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
556 583 567 660 706 723 1977-2013
Changes in Reserves During Year
             
Adjustments (+,-)
-4 12 17 27 -16 -10 1977-2013
Revision Increases (+)
21 67 58 78 45 38 1977-2013
Revision Decreases (-)
115 21 45 47 35 59 1977-2013
Sales (-)
17 5 68 43 5 22 2000-2013
Acquisitions (+)
12 0 46 82 15 12 2000-2013
Extensions (+)
9 12 15 38 86 100 1977-2013
New Field Discoveries (+)
0 0 1 0 0 0 1977-2013
New Reservoir Discoveries in Old Fields (+)
1 0 0 0 0 9 1977-2013
Estimated Production (-)
41 38 40 42 44 51 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