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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
14,553 14,567 16,426 15,437 14,372 20,858 1979-2017
Adjustments
79 -206 592 -57 104 203 1979-2017
Revision Increases
2,555 3,649 3,657 1,506 4,713 1,606 1979-2017
Revision Decreases
3,500 2,985 2,130 3,881 5,776 1,122 1979-2017
Sales
344 768 16 985 151 4,481 2000-2017
Acquisitions
127 641 69 2,569 382 9,767 2000-2017
Extensions and Discoveries
        941 1,832 2016-2017
Extensions
745 827 945 1,148 -- -- 1979-2017
New Field Discoveries
2 0 1 0 -- -- 1979-2017
New Reservoir Discoveries in Old Fields
5 98 4 1 -- -- 1979-2017
Estimated Production
1,254 1,242 1,263 1,290 1,278 1,319 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