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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2012 2013 2014 2015 2016 2017 View
History
Proved Reserves as of 12/31
2,974 2,876 2,854 2,333 1,933 2,209 1977-2017
Changes in Reserves During Year
             
Adjustments (+,-)
9 -51 15 35 19 90 1977-2017
Revision Increases (+)
506 238 377 217 175 319 1977-2017
Revision Decreases (-)
389 116 246 616 280 113 1977-2017
Sales (-)
1 322 537 4 145 18 2000-2017
Acquisitions (+)
8 320 543 5 2 90 2000-2017
Extensions and Discoveries (+)
        24 81 2016-2017
Extensions (+)
32 17 12 43 -- -- 1977-2017
New Field Discoveries (+)
2 0 0 0 -- -- 1977-2017
New Reservoir Discoveries in Old Fields (+)
0 15 16 0 -- -- 1977-2017
Estimated Production (-)
198 199 202 201 195 173 1977-2017
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: The volumes in the table above are crude oil ONLY (aka Black Oil), excluding lease condensate. Miscellaneous includes Arizona, Florida (2017-present), Idaho, Maryland, Missouri, Nevada, New York, South Dakota, Tennessee, and Virginia. The production estimates in this table are based on data reported on Form EIA-23, "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: 11/28/2018
Next Release Date: 11/29/2019