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Natural Gas Proved Reserves, Wet After Lease Separation
(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
11,101 12,482 8,937 15,019 17,981 18,808 1979-2018
Adjustments
761 -125 270 -153 89 -614 1979-2018
Revision Increases
1,042 1,689 780 7,677 2,881 670 1979-2018
Revision Decreases
1,717 888 4,922 1,257 409 1,177 1979-2018
Sales
488 571 1,349 503 824 134 2000-2018
Acquisitions
602 1,296 1,589 450 1,721 12 2000-2018
Extensions and Discoveries
      981 590 3,133 2016-2018
Extensions
2,277 952 1,141 -- -- -- 1979-2018
New Field Discoveries
0 2 0 -- -- -- 1979-2018
New Reservoir Discoveries in Old Fields
1 21 0 -- -- -- 1979-2018
Estimated Production
943 995 1,054 1,113 1,086 1,063 1979-2018
- = 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