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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2014 2015 2016 2017 2018 2019 View
History
Proved Reserves as of 12/31
12,272 11,759 12,859 15,936 18,043 18,622 1977-2019
Changes in Reserves During Year
             
Adjustments (+,-)
213 462 347 168 20 -358 1977-2019
Revision Increases (+)
1,855 2,126 2,225 2,290 1,401 1,702 1977-2019
Revision Decreases (-)
1,555 3,406 2,214 1,433 1,654 2,991 1977-2019
Sales (-)
688 175 501 630 647 887 2000-2019
Acquisitions (+)
958 419 787 1,078 1,317 1,480 2000-2019
Extensions and Discoveries (+)
    1,486 2,763 3,123 3,329 2016-2019
Extensions (+)
1,910 1,151 -- -- -- -- 1977-2019
New Field Discoveries (+)
9 0 -- -- -- -- 1977-2019
New Reservoir Discoveries in Old Fields (+)
83 14 -- -- -- -- 1977-2019
Estimated Production (-)
981 1,104 1,030 1,159 1,453 1,696 1977-2019
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: W -- Individual state volumes are withheld to avoid disclosure of operator-level reserves data, due to statistical precision requirements, or due to other data quality reasons. The individual state volumes are included in the U.S. Total volume. The volumes in the table above are crude oil ONLY (aka Black Oil), excluding lease condensate. The production estimates in this table are based on data reported on Form EIA-23L, "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: 1/11/2021
Next Release Date: 12/20/2021