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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
459 825 811 805 705 740 1979-2009
Adjustments
1 1 1 -5 0 0 1979-2009
Revision Increases
22 418 43 48 23 79 1979-2009
Revision Decreases
17 19 22 10 86 7 1979-2009
Sales
114 0 0 1 0 0 2000-2009
Acquisitions
103 0 0 3 0 0 2000-2009
Extensions
0 0 0 0 0 0 1979-2009
New Field Discoveries
0 0 0 0 0 0 1979-2009
New Reservoir Discoveries in Old Fields
0 0 1 0 0 0 1979-2009
Estimated Production
47 34 37 41 37 37 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