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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
2,694 2,345 2,309 2,128 2,469 2,321 1977-2010
Adjustments
5 -12 31 -8 2 4 1977-2010
Revision Increases
685 112 296 239 180 488 1977-2010
Revision Decreases
96 371 217 327 148 427 1977-2010
Sales
200 169 158 1 4 2 2000-2010
Acquisitions
227 156 225 23 78 0 2000-2010
Extensions
120 166 13 96 446 8 1977-2010
New Field Discoveries
0 0 0 0 1 1 1977-2010
New Reservoir Discoveries in Old Fields
2 1 1 14 0 0 1977-2010
Estimated Production
234 232 227 217 214 220 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