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Crude Oil Proved Reserves, Reserves Changes, and Production
(Million Barrels)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2011 2012 2013 2014 2015 2016 View
History
Proved Reserves as of 12/31
22,728 27,193 30,473 33,530 30,284 31,201 1977-2016
Changes in Reserves During Year
             
Adjustments (+,-)
199 110 -621 515 1,153 337 1977-2016
Revision Increases (+)
4,248 4,235 3,943 5,077 4,073 5,128 1977-2016
Revision Decreases (-)
3,101 2,933 3,120 4,798 8,282 4,820 1977-2016
Sales (-)
791 734 1,327 2,032 873 1,125 2000-2016
Acquisitions (+)
1,209 1,150 1,785 2,234 798 1,460 2000-2016
Extensions and Discoveries (+)
          2,712 2016-2016
Extensions (+)
2,531 4,403 4,361 4,395 2,757   1977-2015
New Field Discoveries (+)
477 53 188 151 20   1977-2015
New Reservoir Discoveries in Old Fields (+)
59 122 319 207 38   1977-2015
Estimated Production (-)
1,648 1,941 2,248 2,692 2,930 2,775 1977-2016
- = 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, Idaho, 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: 01/31/2018
Next Release Date: 11/23/2018