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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
277 214 212 151 169 180 1979-2010
Adjustments
72 -64 2 1 3 2 1979-2010
Revision Increases
33 29 33 21 42 39 1979-2010
Revision Decreases
13 12 27 72 15 17 1979-2010
Sales
0 72 4 6 0 1 2000-2010
Acquisitions
1 60 6 6 0 0 2000-2010
Extensions
6 5 0 0 0 0 1979-2010
New Field Discoveries
0 0 0 0 0 0 1979-2010
New Reservoir Discoveries in Old Fields
0 0 0 0 0 0 1979-2010
Estimated Production
18 9 12 11 12 12 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