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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
2,855 2,034 1,572 2,016 2,421 2,680 1977-2019
Changes in Reserves During Year
             
Adjustments (+,-)
1 2 -75 6 3 -56 1977-2019
Revision Increases (+)
238 119 96 557 465 364 1977-2019
Revision Decreases (-)
196 810 387 0 24 8 1977-2019
Sales (-)
125 12 0 0 0 0 2000-2019
Acquisitions (+)
186 0 0 0 21 51 2000-2019
Extensions and Discoveries (+)
    82 58 116 79 2016-2019
Extensions (+)
35 54 -- -- -- -- 1977-2019
New Field Discoveries (+)
0 0 -- -- -- -- 1977-2019
New Reservoir Discoveries in Old Fields (+)
0 0 -- -- -- -- 1977-2019
Estimated Production (-)
182 174 178 177 176 171 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