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Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2013 2014 2015 2016 2017 2018 View
History
Proved Reserves as of Dec. 31
5,108 6,434 6,077 6,868 10,734 14,798 1979-2018
Adjustments
-209 311 186 71 139 -22 1979-2018
Revision Increases
1,118 1,600 737 1,846 1,114 1,456 1979-2018
Revision Decreases
789 893 1,769 1,253 495 1,788 1979-2018
Sales
533 16 267 58 177 48 2000-2018
Acquisitions
314 57 302 99 2,336 109 2000-2018
Extensions and Discoveries
      716 1,667 5,282 2016-2018
Extensions
769 777 1,039 -- -- -- 1979-2018
New Field Discoveries
0 1 0 -- -- -- 1979-2018
New Reservoir Discoveries in Old Fields
98 4 1 -- -- -- 1979-2018
Estimated Production
493 515 586 630 718 925 1979-2018
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: W -- Individual state volumes are withheld to avoid disclosure of operator-level reserves data, due to statistical precision requirements, or due to other data quality reasons. The individual state volumes are included in the U.S. Total volume.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 12/12/2019
Next Release Date: 11/20/2020