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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
1,188 1,366 1,290 1,431 1,172 1,218 1977-2009
Adjustments
-4 25 34 15 0 87 1977-2009
Revision Increases
234 187 114 249 67 161 1977-2009
Revision Decreases
37 77 135 80 246 111 1977-2009
Sales
17 116 11 5 6 8 2000-2009
Acquisitions
46 232 5 6 5 17 2000-2009
Extensions
14 27 19 58 23 8 1977-2009
New Field Discoveries
4 1 0 1 2 0 1977-2009
New Reservoir Discoveries in Old Fields
0 1 0 0 1 0 1977-2009
Estimated Production
108 102 102 103 105 108 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