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Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2012 2013 2014 2015 2016 2017 View
History
Proved Reserves as of Dec. 31
21,674 23,533 21,992 18,274 19,086 28,727 1979-2017
Adjustments
-500 -230 733 -129 3,188 4,516 1979-2017
Revision Increases
2,241 4,322 3,651 1,855 2,981 3,136 1979-2017
Revision Decreases
4,822 2,449 5,281 4,856 3,130 1,912 1979-2017
Sales
1,748 614 731 211 3,003 1,515 2000-2017
Acquisitions
467 1,002 598 378 1,794 5,228 2000-2017
Extensions and Discoveries
        649 1,888 2016-2017
Extensions
1,639 1,422 1,129 932 -- -- 1979-2017
New Field Discoveries
9 0 0 0 -- -- 1979-2017
New Reservoir Discoveries in Old Fields
0 12 6 0 -- -- 1979-2017
Estimated Production
1,763 1,606 1,646 1,687 1,667 1,700 1979-2017
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Florida (2017-present), Idaho, Illinois, Indiana, Maryland, Missouri, Nebraska, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 11/28/2018
Next Release Date: 11/29/2019