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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
14,743 16,596 17,149 21,851 23,302 23,058 1977-2009
Adjustments
-55 57 52 136 -250 306 1977-2009
Revision Increases
1,505 2,018 1,178 3,924 3,244 1,601 1977-2009
Revision Decreases
2,167 1,478 1,524 582 3,029 4,044 1977-2009
Sales
2,528 1,238 1,539 750 747 374 2000-2009
Acquisitions
2,397 1,767 1,540 450 1,346 437 2000-2009
Extensions
1,017 1,795 1,980 2,812 2,294 3,346 1977-2009
New Field Discoveries
171 32 14 15 17 8 1977-2009
New Reservoir Discoveries in Old Fields
17 4 26 23 17 0 1977-2009
Estimated Production
1,050 1,104 1,174 1,326 1,441 1,524 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