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Dry Natural Gas Proved Reserves
(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
131 138 239 270 349 350 1977-2010
Adjustments
24 -6 1 -13 69 -84 1977-2010
Revision Increases
8 11 12 41 65 104 1977-2010
Revision Decreases
18 18 14 37 119 114 1977-2010
Sales
0 4 18 10 0 14 2000-2010
Acquisitions
0 6 31 21 0 0 2000-2010
Extensions
12 28 57 41 94 125 1977-2010
New Field Discoveries
13 0 38 8 0 0 1977-2010
New Reservoir Discoveries in Old Fields
0 0 8 0 0 0 1977-2010
Estimated Production
18 10 14 20 30 16 1977-2010
- = 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