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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
23,533 21,992 18,274 19,086 28,727 26,132 1979-2018
Adjustments
-230 733 -129 3,188 4,516 18 1979-2018
Revision Increases
4,322 3,651 1,855 2,981 3,136 2,939 1979-2018
Revision Decreases
2,449 5,281 4,856 3,130 1,912 5,140 1979-2018
Sales
614 731 211 3,003 1,515 987 2000-2018
Acquisitions
1,002 598 378 1,794 5,228 954 2000-2018
Extensions and Discoveries
      649 1,888 1,431 2016-2018
Extensions
1,422 1,129 932 -- -- -- 1979-2018
New Field Discoveries
0 0 0 -- -- -- 1979-2018
New Reservoir Discoveries in Old Fields
12 6 0 -- -- -- 1979-2018
Estimated Production
1,606 1,646 1,687 1,667 1,700 1,810 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