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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2012 2013 2014 2015 2016 2017 View
History
Proved Reserves as of 12/31
30,529 33,371 36,385 32,318 32,773 39,160 1899-2017
Changes in Reserves During Year
             
Adjustments (+,-)
109 -620 516 1,155 262 822 1977-2017
Revision Increases (+)
4,319 4,030 5,315 4,192 5,224 5,504 1977-2017
Revision Decreases (-)
3,384 3,512 4,994 9,092 5,207 2,887 1977-2017
Sales (-)
734 1,327 2,157 885 1,125 1,135 2000-2017
Acquisitions (+)
1,150 1,787 2,420 798 1,460 2,135 2000-2017
Extensions and Discoveries (+)
        2,794 5,105 2016-2017
Extensions (+)
4,462 4,395 4,430 2,811 -- -- 1977-2017
New Field Discoveries (+)
53 188 151 20 -- -- 1977-2017
New Reservoir Discoveries in Old Fields (+)
122 319 207 38 -- -- 1977-2017
Estimated Production (-)
2,112 2,418 2,874 3,104 2,953 3,157 1977-2017
- = 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, Florida (2017-present), Idaho, Maryland, 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: 11/28/2018
Next Release Date: 11/29/2019