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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
1,921 2,227 3,269 5,616 10,852 14,152 1979-2010
Adjustments
11 -31 -22 -67 -8 -31 1979-2010
Revision Increases
121 99 310 1,247 1,907 1,060 1979-2010
Revision Decreases
141 112 139 161 621 301 1979-2010
Sales
15 4 298 19 49 393 2000-2010
Acquisitions
3 5 280 5 36 807 2000-2010
Extensions
281 492 1,149 1,755 4,629 3,079 1979-2010
New Field Discoveries
4 7 0 0 0 0 1979-2010
New Reservoir Discoveries in Old Fields
31 33 27 41 36 27 1979-2010
Estimated Production
171 183 265 454 694 948 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