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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2015 2016 2017 2018 2019 2020 View
History
Proved Reserves as of 12/31
2,333 1,933 2,209 2,296 2,213 1,496 1977-2020
Changes in Reserves During Year
             
Adjustments (+,-)
35 19 90 -37 84 -129 1977-2020
Revision Increases (+)
217 175 319 379 313 129 1977-2020
Revision Decreases (-)
616 280 113 142 371 655 1977-2020
Sales (-)
4 145 18 26 22 1 2000-2020
Acquisitions (+)
5 2 90 16 1 0 2000-2020
Extensions and Discoveries (+)
  24 81 59 74 84 2016-2020
Extensions (+)
43 -- -- -- --   1977-2019
New Field Discoveries (+)
0 -- -- -- --   1977-2019
New Reservoir Discoveries in Old Fields (+)
0 -- -- -- --   1977-2019
Estimated Production (-)
201 195 173 162 162 145 1977-2020
- = 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: 1/13/2022
Next Release Date: 12/30/2022