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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
1,745 1,956 2,176 2,638 3,216 3,292 1977-2013
Changes in Reserves During Year
             
Adjustments (+,-)
1 5 -90 74 68 34 1977-2013
Revision Increases (+)
89 197 222 285 386 378 1977-2013
Revision Decreases (-)
236 93 143 198 322 442 1977-2013
Sales (-)
34 63 115 119 77 283 2000-2013
Acquisitions (+)
122 80 299 243 238 257 2000-2013
Extensions (+)
121 199 166 326 480 342 1977-2013
New Field Discoveries (+)
0 0 0 2 3 0 1977-2013
New Reservoir Discoveries in Old Fields (+)
4 4 1 0 2 11 1977-2013
Estimated Production (-)
118 118 120 151 200 221 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