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Dry Natural Gas Proved Reserves
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2013 2014 2015 2016 2017 2018 View
History
Proved Reserves as of Dec. 31
1,597 2,036 2,182 1,791 1,510 1,262 1977-2018
Adjustments
-274 502 305 -104 159 -97 1977-2018
Revision Increases
67 140 199 228 82 79 1977-2018
Revision Decreases
75 41 196 385 78 46 1977-2018
Sales
357 2 175 43 475 82 2000-2018
Acquisitions
183 0 175 37 163 27 2000-2018
Extensions and Discoveries
      17 17 0 2016-2018
Extensions
0 2 0 -- -- -- 1977-2018
New Field Discoveries
0 0 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields
0 14 0 -- -- -- 1977-2018
Estimated Production
175 176 162 141 149 129 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.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 12/12/2019
Next Release Date: 11/20/2020