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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
2,831 2,470 2,430 2,249 2,609 2,447 1979-2010
Adjustments
-3 -9 31 -1 -1 -1 1979-2010
Revision Increases
720 118 311 253 191 514 1979-2010
Revision Decreases
102 390 229 345 156 451 1979-2010
Sales
211 178 167 1 4 2 2000-2010
Acquisitions
239 165 237 24 83 0 2000-2010
Extensions
126 176 14 102 472 9 1979-2010
New Field Discoveries
0 0 0 0 1 1 1979-2010
New Reservoir Discoveries in Old Fields
3 1 1 16 0 0 1979-2010
Estimated Production
247 244 238 229 226 232 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