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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
1,839 1,873 1,415 1,301 1,509 1,513 1979-2018
Adjustments
-64 -52 -281 405 261 178 1979-2018
Revision Increases
395 295 152 155 67 79 1979-2018
Revision Decreases
141 92 225 415 74 35 1979-2018
Sales
11 1 15 157 2 128 2000-2018
Acquisitions
11 8 0 0 54 0 2000-2018
Extensions and Discoveries
      0 0 0 2016-2018
Extensions
0 1 0 -- -- -- 1979-2018
New Field Discoveries
0 0 0 -- -- -- 1979-2018
New Reservoir Discoveries in Old Fields
3 1 0 -- -- -- 1979-2018
Estimated Production
135 126 89 102 98 90 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