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Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2009 2010 2011 2012 2013 2014 View
History
Proved Reserves as of Dec. 31
283,879 317,647 348,809 322,670 353,994 388,841 1979-2014
Adjustments
5,923 1,292 2,715 -810 693 4,905 1979-2014
Revision Increases
32,664 42,394 56,015 42,505 49,515 55,328 1979-2014
Revision Decreases
34,563 38,339 56,127 88,119 46,721 54,344 1979-2014
Sales
4,377 10,582 44,575 9,950 10,186 21,729 2000-2014
Acquisitions
4,155 13,348 47,873 8,091 11,473 28,294 2000-2014
Extensions
43,500 46,283 47,635 47,053 51,074 47,071 1979-2014
New Field Discoveries
1,423 895 987 780 263 671 1979-2014
New Reservoir Discoveries in Old Fields
2,656 1,701 1,260 408 1,680 2,745 1979-2014
Estimated Production
22,537 23,224 24,621 26,097 26,467 28,094 1979-2014
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, 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: 11/19/2015
Next Release Date: 12/31/2016