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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
2,634 3,228 2,794 2,740 2,406 2,773 1977-2009
Adjustments
19 78 -74 33 -6 11 1977-2009
Revision Increases
440 739 156 355 263 259 1977-2009
Revision Decreases
152 129 419 273 491 189 1977-2009
Sales
128 201 274 164 8 4 2000-2009
Acquisitions
147 244 252 231 30 78 2000-2009
Extensions
100 129 176 16 101 450 1977-2009
New Field Discoveries
0 0 0 0 0 1 1977-2009
New Reservoir Discoveries in Old Fields
5 2 4 1 14 0 1977-2009
Estimated Production
247 268 255 253 237 239 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