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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
824 811 805 704 739 724 1977-2010
Adjustments
-1 2 -7 -1 0 0 1977-2010
Revision Increases
418 43 49 23 79 23 1977-2010
Revision Decreases
19 22 10 87 7 10 1977-2010
Sales
0 0 1 0 0 0 2000-2010
Acquisitions
0 0 3 0 0 0 2000-2010
Extensions
0 0 0 0 0 0 1977-2010
New Field Discoveries
0 0 0 0 0 0 1977-2010
New Reservoir Discoveries in Old Fields
0 1 0 0 0 0 1977-2010
Estimated Production
33 37 40 36 37 28 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