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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
268,519 294,549 318,770 258,133 267,899 363,706 1979-2017
Adjustments
-1,194 1,341 3,533 7,207 5,950 16,279 1979-2017
Revision Increases
34,080 40,867 41,975 28,974 41,298 54,655 1979-2017
Revision Decreases
81,727 36,599 44,047 100,773 44,501 24,677 1979-2017
Sales
8,817 8,361 17,671 13,405 16,843 22,619 2000-2017
Acquisitions
5,941 8,359 23,671 12,932 15,503 39,366 2000-2017
Extensions and Discoveries
        30,973 55,883 2016-2017
Extensions
36,993 41,370 36,971 25,780 -- -- 1979-2017
New Field Discoveries
629 200 344 8 -- -- 1979-2017
New Reservoir Discoveries in Old Fields
179 1,098 2,161 1,682 -- -- 1979-2017
Estimated Production
22,575 22,245 22,716 23,042 22,614 23,080 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