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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
196,214 200,840 225,809 236,957 263,408 295,787 1977-2010
Adjustments
1,889 789 1,146 210 5,095 508 1977-2010
Revision Increases
22,060 17,980 30,027 30,490 29,548 39,899 1977-2010
Revision Decreases
19,500 22,293 16,601 29,734 32,927 36,119 1977-2010
Sales
9,034 22,850 14,730 7,603 4,104 10,022 2000-2010
Acquisitions
11,576 25,846 15,142 8,498 3,968 12,748 2000-2010
Extensions
20,988 21,729 27,079 26,669 42,137 44,769 1977-2010
New Field Discoveries
920 409 796 1,170 1,372 850 1977-2010
New Reservoir Discoveries in Old Fields
1,198 1,153 1,188 1,617 2,598 1,668 1977-2010
Estimated Production
17,989 18,137 19,078 20,169 21,236 21,922 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