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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
1,781 1,839 1,873 1,415 1,301 1,509 1979-2017
Adjustments
-105 -64 -52 -281 405 261 1979-2017
Revision Increases
550 395 295 152 155 67 1979-2017
Revision Decreases
1,081 141 92 225 415 74 1979-2017
Sales
0 11 1 15 157 2 2000-2017
Acquisitions
0 11 8 0 0 54 2000-2017
Extensions and Discoveries
        0 0 2016-2017
Extensions
0 0 1 0 -- -- 1979-2017
New Field Discoveries
7 0 0 0 -- -- 1979-2017
New Reservoir Discoveries in Old Fields
1 3 1 0 -- -- 1979-2017
Estimated Production
140 135 126 89 102 98 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