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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
2004 2005 2006 2007 2008 2009 View
History
Proved Reserves as of Dec. 31
23,278 24,338 24,116 30,531 32,176 36,386 1979-2009
Adjustments
73 16 5 34 10 1,209 1979-2009
Revision Increases
2,949 2,200 1,365 4,852 5,492 5,344 1979-2009
Revision Decreases
3,699 1,864 2,335 1,860 4,409 3,652 1979-2009
Sales
889 127 3,362 289 211 172 2000-2009
Acquisitions
827 407 3,502 653 129 37 2000-2009
Extensions
3,242 2,062 2,286 4,851 2,666 3,641 1979-2009
New Field Discoveries
8 11 0 2 1 0 1979-2009
New Reservoir Discoveries in Old Fields
38 3 31 0 33 91 1979-2009
Estimated Production
1,537 1,648 1,714 1,828 2,066 2,288 1979-2009
- = 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: 12/30/2010
Next Release Date: 6/15/2012