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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
462 1,002 1,263 1,404 1,145 1,088 1977-2016
Changes in Reserves During Year
             
Adjustments (+,-)
13 15 -55 -25 11 146 1977-2016
Revision Increases (+)
11 94 229 108 174 228 1977-2016
Revision Decreases (-)
8 36 255 109 338 469 1977-2016
Sales (-)
3 1 40 248 1 128 2000-2016
Acquisitions (+)
135 28 81 257 0 103 2000-2016
Extensions and Discoveries (+)
          207 2016-2016
Extensions (+)
205 489 411 278 110   1977-2015
New Field Discoveries (+)
0 0 0 0 0   1977-2015
New Reservoir Discoveries in Old Fields (+)
30 25 11 48 0   1977-2015
Estimated Production (-)
28 74 121 168 215 144 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