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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
32,318 32,773 39,160 43,824 44,191 35,835 1899-2020
Changes in Reserves During Year
             
Adjustments (+,-)
1,155 262 822 551 -573 933 1977-2020
Revision Increases (+)
4,192 5,224 5,504 4,290 3,729 2,797 1977-2020
Revision Decreases (-)
9,092 5,207 2,887 3,683 5,608 11,584 1977-2020
Sales (-)
885 1,125 1,135 1,237 1,833 2,019 2000-2020
Acquisitions (+)
798 1,460 2,135 1,872 2,743 2,317 2000-2020
Extensions and Discoveries (+)
  2,794 5,105 6,567 6,078 3,002 2016-2020
Extensions (+)
2,811 -- -- -- --   1977-2019
New Field Discoveries (+)
20 -- -- -- --   1977-2019
New Reservoir Discoveries in Old Fields (+)
38 -- -- -- --   1977-2019
Estimated Production (-)
3,104 2,953 3,157 3,696 4,169 3,846 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