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Nonassociated 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
269,514 295,504 319,724 258,807 268,913 364,846 1979-2017
Adjustments
-1,195 1,342 3,509 7,436 6,089 16,233 1979-2017
Revision Increases
34,343 40,981 42,064 29,030 41,737 54,884 1979-2017
Revision Decreases
81,869 36,900 44,184 101,272 44,569 24,677 1979-2017
Sales
8,819 8,453 17,671 13,405 17,018 22,619 2000-2017
Acquisitions
5,941 8,630 23,705 12,933 15,529 39,366 2000-2017
Extensions and Discoveries
        31,064 55,927 2016-2017
Extensions
37,023 41,444 37,109 25,807 -- -- 1979-2017
New Field Discoveries
629 200 344 8 -- -- 1979-2017
New Reservoir Discoveries in Old Fields
179 1,099 2,161 1,682 -- -- 1979-2017
Estimated Production
22,704 22,353 22,817 23,136 22,726 23,181 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, 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