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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
353,994 388,841 324,303 341,133 464,292 504,501 1979-2018
Adjustments
693 4,905 9,430 7,086 19,326 8,770 1979-2018
Revision Increases
49,515 55,328 38,995 56,800 72,947 41,466 1979-2018
Revision Decreases
46,721 54,344 119,757 56,706 31,629 69,153 1979-2018
Sales
10,186 21,729 14,682 19,566 24,916 24,875 2000-2018
Acquisitions
11,473 28,294 16,099 19,998 47,039 38,621 2000-2018
Extensions and Discoveries
      38,371 70,783 79,457 2016-2018
Extensions
51,074 47,071 32,940 -- -- -- 1979-2018
New Field Discoveries
263 671 31 -- -- -- 1979-2018
New Reservoir Discoveries in Old Fields
1,680 2,745 1,735 -- -- -- 1979-2018
Estimated Production
26,467 28,094 29,329 29,153 30,391 34,077 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