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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
2008 2009 2010 2011 2012 2013 View
History
Proved Reserves as of Dec. 31
224,873 249,406 280,880 305,010 268,519 294,549 1979-2013
Adjustments
-183 5,045 1,776 2,326 -1,194 1,341 1979-2013
Revision Increases
28,849 26,951 37,019 47,832 34,080 40,867 1979-2013
Revision Decreases
27,657 31,762 34,180 50,046 81,727 36,599 1979-2013
Sales
7,249 3,809 9,304 43,203 8,817 8,361 2000-2013
Acquisitions
7,910 3,477 10,879 45,818 5,941 8,359 2000-2013
Extensions
26,294 40,829 43,610 41,677 36,993 41,370 1979-2013
New Field Discoveries
1,122 1,160 793 376 629 200 1979-2013
New Reservoir Discoveries in Old Fields
853 2,487 1,515 1,097 179 1,098 1979-2013
Estimated Production
18,917 19,845 20,634 21,747 22,575 22,245 1979-2013
- = 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: 12/4/2014
Next Release Date: 12/31/2015