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Dry Natural Gas Proved Reserves
(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
974 898 975 1,027 985 896 1977-2009
Adjustments
-138 -78 129 138 210 70 1977-2009
Revision Increases
103 166 49 144 135 70 1977-2009
Revision Decreases
64 111 112 198 333 43 1977-2009
Sales
0 54 11 0 31 196 2000-2009
Acquisitions
0 7 83 0 32 79 2000-2009
Extensions
29 58 17 39 23 10 1977-2009
New Field Discoveries
0 5 0 0 1 0 1977-2009
New Reservoir Discoveries in Old Fields
0 7 0 0 0 0 1977-2009
Estimated Production
82 76 78 71 79 79 1977-2009
- = 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: 12/30/2011