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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
4,051 4,894 6,095 6,393 6,810 6,515 1979-2010
Adjustments
33 -22 12 -11 67 -50 1979-2010
Revision Increases
134 184 1,085 376 1,181 776 1979-2010
Revision Decreases
80 472 326 491 499 163 1979-2010
Sales
6 1,145 490 260 90 543 2000-2010
Acquisitions
0 1,199 543 252 69 1 2000-2010
Extensions
590 1,382 713 761 108 89 1979-2010
New Field Discoveries
0 40 4 64 0 0 1979-2010
New Reservoir Discoveries in Old Fields
5 0 0 0 4 0 1979-2010
Estimated Production
286 323 340 393 423 405 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