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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
5,193 5,256 5,473 5,895 5,897 3,669 1977-2020
Changes in Reserves During Year
             
Adjustments (+,-)
218 -110 79 251 -163 136 1977-2020
Revision Increases (+)
374 690 406 343 285 570 1977-2020
Revision Decreases (-)
1,381 490 417 385 429 2,719 1977-2020
Sales (-)
306 171 199 91 2 2 2000-2020
Acquisitions (+)
62 93 6 35 115 0 2000-2020
Extensions and Discoveries (+)
  428 733 729 713 219 2016-2020
Extensions (+)
605 -- -- -- --   1977-2019
New Field Discoveries (+)
0 -- -- -- --   1977-2019
New Reservoir Discoveries in Old Fields (+)
6 -- -- -- --   1977-2019
Estimated Production (-)
428 377 391 460 517 432 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