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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
2,876 2,854 2,333 1,933 2,209 2,296 1977-2018
Changes in Reserves During Year
             
Adjustments (+,-)
-51 15 35 19 90 -37 1977-2018
Revision Increases (+)
238 377 217 175 319 379 1977-2018
Revision Decreases (-)
116 246 616 280 113 142 1977-2018
Sales (-)
322 537 4 145 18 26 2000-2018
Acquisitions (+)
320 543 5 2 90 16 2000-2018
Extensions and Discoveries (+)
      24 81 59 2016-2018
Extensions (+)
17 12 43 -- -- -- 1977-2018
New Field Discoveries (+)
0 0 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields (+)
15 16 0 -- -- -- 1977-2018
Estimated Production (-)
199 202 201 195 173 162 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