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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
17,683 17,332 16,556 15,592 14,662 14,316 1979-2010
Adjustments
48 159 129 -26 412 71 1979-2010
Revision Increases
1,975 1,023 2,445 2,631 1,196 2,134 1979-2010
Revision Decreases
2,287 1,136 2,425 2,659 1,531 1,711 1979-2010
Sales
906 6,399 502 314 245 104 2000-2010
Acquisitions
1,171 6,390 284 185 252 150 2000-2010
Extensions
943 758 524 491 246 244 1979-2010
New Field Discoveries
10 39 22 0 1 0 1979-2010
New Reservoir Discoveries in Old Fields
3 147 11 2 3 1 1979-2010
Estimated Production
1,383 1,332 1,264 1,274 1,264 1,131 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