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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
1,281 1,471 1,384 1,531 1,257 1,289 1979-2009
Adjustments
-2 24 32 14 4 75 1979-2009
Revision Increases
252 202 122 266 73 170 1979-2009
Revision Decreases
40 82 144 86 264 117 1979-2009
Sales
18 125 12 6 7 8 2000-2009
Acquisitions
49 250 5 6 6 18 2000-2009
Extensions
16 29 20 62 24 8 1979-2009
New Field Discoveries
4 1 0 1 2 0 1979-2009
New Reservoir Discoveries in Old Fields
0 1 0 0 1 0 1979-2009
Estimated Production
117 110 110 110 113 114 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