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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
595 558 480 357 350 280 1977-2018
Adjustments
29 -15 50 -40 -45 3 1977-2018
Revision Increases
39 82 47 30 22 14 1977-2018
Revision Decreases
75 29 129 55 13 8 1977-2018
Sales
39 115 95 10 5 52 2000-2018
Acquisitions
90 82 104 0 73 9 2000-2018
Extensions and Discoveries
      0 0 0 2016-2018
Extensions
5 9 3 -- -- -- 1977-2018
New Field Discoveries
0 1 0 -- -- -- 1977-2018
New Reservoir Discoveries in Old Fields
0 2 0 -- -- -- 1977-2018
Estimated Production
61 54 58 48 39 36 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