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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
24,338 24,116 30,531 32,176 36,386 36,192 1979-2010
Adjustments
16 5 34 10 1,209 542 1979-2010
Revision Increases
2,200 1,365 4,852 5,492 5,344 5,038 1979-2010
Revision Decreases
1,864 2,335 1,860 4,409 3,652 5,688 1979-2010
Sales
127 3,362 289 211 172 1,314 2000-2010
Acquisitions
407 3,502 653 129 37 1,308 2000-2010
Extensions
2,062 2,286 4,851 2,666 3,641 2,191 1979-2010
New Field Discoveries
11 0 2 1 0 0 1979-2010
New Reservoir Discoveries in Old Fields
3 31 0 33 91 0 1979-2010
Estimated Production
1,648 1,714 1,828 2,066 2,288 2,271 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