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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
14,567 16,426 15,437 14,372 20,858 25,090 1979-2018
Adjustments
-206 592 -57 104 203 -370 1979-2018
Revision Increases
3,649 3,657 1,506 4,713 1,606 1,892 1979-2018
Revision Decreases
2,985 2,130 3,881 5,776 1,122 2,150 1979-2018
Sales
768 16 985 151 4,481 605 2000-2018
Acquisitions
641 69 2,569 382 9,767 1,503 2000-2018
Extensions and Discoveries
      941 1,832 5,474 2016-2018
Extensions
827 945 1,148 -- -- -- 1979-2018
New Field Discoveries
0 1 0 -- -- -- 1979-2018
New Reservoir Discoveries in Old Fields
98 4 1 -- -- -- 1979-2018
Estimated Production
1,242 1,263 1,290 1,278 1,319 1,512 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