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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
2005 2006 2007 2008 2009 2010 View
History
Proved Reserves as of Dec. 31
10,091 10,149 9,651 10,581 19,898 28,838 1981-2010
Adjustments
100 98 201 -150 244 -411 1981-2010
Revision Increases
787 1,129 907 1,122 1,785 3,039 1981-2010
Revision Decreases
799 1,391 1,044 1,279 2,858 3,051 1981-2010
Sales
187 449 2,307 1,067 114 658 2000-2010
Acquisitions
355 713 1,589 1,300 87 792 2000-2010
Extensions
1,570 1,022 1,255 1,847 9,826 11,019 1981-2010
New Field Discoveries
6 29 0 195 259 49 1981-2010
New Reservoir Discoveries in Old Fields
191 189 131 208 1,550 268 1981-2010
Estimated Production
1,167 1,282 1,230 1,246 1,462 2,107 1981-2010
- = 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