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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
1,366 1,290 1,431 1,172 1,218 1,164 1977-2010
Adjustments
25 34 15 0 87 -40 1977-2010
Revision Increases
187 114 249 67 161 138 1977-2010
Revision Decreases
77 135 80 246 111 63 1977-2010
Sales
116 11 5 6 8 14 2000-2010
Acquisitions
232 5 6 5 17 4 2000-2010
Extensions
27 19 58 23 8 14 1977-2010
New Field Discoveries
1 0 1 2 0 0 1977-2010
New Reservoir Discoveries in Old Fields
1 0 0 1 0 0 1977-2010
Estimated Production
102 102 103 105 108 93 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