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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
6,829 6,685 3,547 3,494 3,752 3,213 1977-2018
Adjustments
-582 -20 177 144 -251 56 1977-2018
Revision Increases
484 752 97 426 819 211 1977-2018
Revision Decreases
444 617 3,125 342 268 130 1977-2018
Sales
478 23 42 73 129 677 2000-2018
Acquisitions
640 31 0 0 270 5 2000-2018
Extensions and Discoveries
      142 118 282 2016-2018
Extensions
117 164 160 -- -- -- 1977-2018
New Field Discoveries
0 2 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields
0 0 0 -- -- -- 1977-2018
Estimated Production
456 433 405 350 301 286 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