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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
2005 2006 2007 2008 2009 2010 View
History
Proved Reserves as of Dec. 31
15,114 14,727 13,923 12,855 12,004 11,704 1979-2010
Adjustments
6 49 73 -14 263 120 1979-2010
Revision Increases
1,687 691 2,138 2,301 898 1,795 1979-2010
Revision Decreases
1,958 728 2,117 2,335 1,125 1,486 1979-2010
Sales
470 6,278 297 202 145 13 2000-2010
Acquisitions
617 6,278 161 5 66 0 2000-2010
Extensions
610 446 168 110 130 150 1979-2010
New Field Discoveries
5 0 0 0 1 0 1979-2010
New Reservoir Discoveries in Old Fields
1 147 0 1 0 0 1979-2010
Estimated Production
1,016 992 930 934 939 866 1979-2010
- = 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, Nebraska, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 8/2/2012
Next Release Date: 8/30/2013