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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
13,518 12,789 8,339 7,416 8,267 6,740 1977-2018
Adjustments
-78 -3 288 112 -64 -257 1977-2018
Revision Increases
560 171 231 268 869 82 1977-2018
Revision Decreases
284 1,094 4,279 534 118 193 1977-2018
Sales
4 248 188 9 8 5,848 2000-2018
Acquisitions
9 80 269 0 0 5,276 2000-2018
Extensions and Discoveries
      63 869 7 2016-2018
Extensions
3,419 1,505 242 -- -- -- 1977-2018
New Field Discoveries
0 0 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields
1 2 2 -- -- -- 1977-2018
Estimated Production
1,140 1,142 1,015 823 697 594 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