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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
4,833 5,108 6,434 6,077 6,868 10,734 1979-2017
Adjustments
7 -209 311 186 71 139 1979-2017
Revision Increases
897 1,118 1,600 737 1,846 1,114 1979-2017
Revision Decreases
937 789 893 1,769 1,253 495 1979-2017
Sales
343 533 16 267 58 177 2000-2017
Acquisitions
122 314 57 302 99 2,336 2000-2017
Extensions and Discoveries
        716 1,667 2016-2017
Extensions
642 769 777 1,039 -- -- 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
446 493 515 586 630 718 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