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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
1,880 2,151 2,227 2,469 2,714 2,782 1977-2009
Adjustments
-40 65 -22 37 81 97 1977-2009
Revision Increases
176 251 56 62 187 126 1977-2009
Revision Decreases
153 77 21 152 133 760 1977-2009
Sales
5 1 432 4 10 0 2000-2009
Acquisitions
0 0 534 6 13 0 2000-2009
Extensions
96 101 23 373 200 713 1977-2009
New Field Discoveries
0 17 0 0 0 0 1977-2009
New Reservoir Discoveries in Old Fields
0 0 4 0 0 0 1977-2009
Estimated Production
83 85 66 80 93 108 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