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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2009 2010 2011 2012 2013 2014 View
History
Proved Reserves as of 12/31
2,095 2,036 1,949 1,892 1,812 1,824 1977-2014
Changes in Reserves During Year
             
Adjustments (+,-)
-30 0 16 15 -39 5 1977-2014
Revision Increases (+)
192 204 229 381 172 324 1977-2014
Revision Decreases (-)
68 125 217 318 79 187 1977-2014
Sales (-)
3 0 0 0 208 419 2000-2014
Acquisitions (+)
18 1 16 5 206 426 2000-2014
Extensions (+)
22 13 18 6 15 11 1977-2014
New Field Discoveries (+)
0 0 0 2 0 0 1977-2014
New Reservoir Discoveries in Old Fields (+)
0 0 0 0 0 2 1977-2014
Estimated Production (-)
161 152 149 148 147 150 1977-2014
- = 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: 11/19/2015
Next Release Date: 12/31/2016