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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2007 2008 2009 2010 2011 2012 View
History
Proved Reserves as of 12/31
3,322 2,705 2,835 2,938 3,005 2,974 1977-2012
Changes in Reserves During Year
             
Adjustments (+,-)
-6 74 -17 13 32 9 1977-2012
Revision Increases (+)
248 170 427 276 391 506 1977-2012
Revision Decreases (-)
144 685 119 167 230 389 1977-2012
Sales (-)
10 19 3 1 7 1 2000-2012
Acquisitions (+)
38 20 20 156 40 8 2000-2012
Extensions (+)
27 42 30 24 37 32 1977-2012
New Field Discoveries (+)
0 0 0 0 0 2 1977-2012
New Reservoir Discoveries in Old Fields (+)
0 2 0 0 0 0 1977-2012
Estimated Production (-)
220 221 208 198 196 198 1977-2012
- = 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 many 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: 4/10/2014
Next Release Date: 4/30/2015