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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2013 2014 2015 2016 2017 2018 View
History
Proved Reserves as of 12/31
2,056 2,495 2,324 2,414 2,454 2,564 1977-2018
Changes in Reserves During Year
             
Adjustments (+,-)
-49 88 164 -16 29 123 1977-2018
Revision Increases (+)
191 217 164 406 91 68 1977-2018
Revision Decreases (-)
130 229 472 324 296 388 1977-2018
Sales (-)
88 50 50 41 77 102 2000-2018
Acquisitions (+)
116 79 44 20 157 172 2000-2018
Extensions and Discoveries (+)
      254 330 444 2016-2018
Extensions (+)
446 533 216 -- -- -- 1977-2018
New Field Discoveries (+)
2 0 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields (+)
11 18 0 -- -- -- 1977-2018
Estimated Production (-)
154 217 237 209 194 207 1977-2018
- = 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: 12/12/2019
Next Release Date: 11/20/2020