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Nonassociated Natural Gas Proved Reserves, Wet After Lease Separation
(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
9,235 10,091 10,149 9,651 10,581 19,898 1981-2009
Adjustments
-12 100 98 201 -150 244 1981-2009
Revision Increases
974 787 1,129 907 1,122 1,785 1981-2009
Revision Decreases
1,110 799 1,391 1,044 1,279 2,858 1981-2009
Sales
912 187 449 2,307 1,067 114 2000-2009
Acquisitions
572 355 713 1,589 1,300 87 2000-2009
Extensions
1,922 1,570 1,022 1,255 1,847 9,826 1981-2009
New Field Discoveries
13 6 29 0 195 259 1981-2009
New Reservoir Discoveries in Old Fields
119 191 189 131 208 1,550 1981-2009
Estimated Production
1,283 1,167 1,282 1,230 1,246 1,462 1981-2009
- = 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