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Nonassociated Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2007 2008 2009 2010 2011 2012 View
History
Proved Reserves as of Dec. 31
213,851 224,873 249,406 280,880 305,010 268,519 1979-2012
Adjustments
713 -183 5,045 1,776 2,326 -1,194 1979-2012
Revision Increases
27,934 28,849 26,951 37,019 47,832 34,080 1979-2012
Revision Decreases
15,561 27,657 31,762 34,180 50,046 81,727 1979-2012
Sales
14,395 7,249 3,809 9,304 43,203 8,817 2000-2012
Acquisitions
14,615 7,910 3,477 10,879 45,818 5,941 2000-2012
Extensions
27,135 26,294 40,829 43,610 41,677 36,993 1979-2012
New Field Discoveries
768 1,122 1,160 793 376 629 1979-2012
New Reservoir Discoveries in Old Fields
1,171 853 2,487 1,515 1,097 179 1979-2012
Estimated Production
17,858 18,917 19,845 20,634 21,747 22,575 1979-2012
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Illinois, Indiana, Maryland, Missouri, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 4/10/2014
Next Release Date: 4/30/2015