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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2011 2012 2013 2014 2015 2016 View
History
Proved Reserves as of 12/31
423 618 896 1,200 1,212 1,267 1977-2016
Changes in Reserves During Year
             
Adjustments (+,-)
0 22 -42 118 104 49 1977-2016
Revision Increases (+)
37 103 197 261 69 209 1977-2016
Revision Decreases (-)
48 93 55 93 211 314 1977-2016
Sales (-)
9 1 2 7 12 64 2000-2016
Acquisitions (+)
1 19 18 1 54 176 2000-2016
Extensions and Discoveries (+)
          110 2016-2016
Extensions (+)
89 184 216 110 121   1977-2015
New Field Discoveries (+)
0 5 0 0 0   1977-2015
New Reservoir Discoveries in Old Fields (+)
0 0 0 0 0   1977-2015
Estimated Production (-)
33 44 54 86 113 111 1977-2016
- = 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: 01/31/2018
Next Release Date: 11/23/2018