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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
173,551 185,072 190,776 215,121 226,012 250,496 1979-2009
Adjustments
191 1,567 1,000 714 -184 5,046 1979-2009
Revision Increases
24,107 20,081 16,268 28,004 28,998 27,142 1979-2009
Revision Decreases
24,121 18,613 20,957 15,664 27,810 31,865 1979-2009
Sales
10,579 7,977 22,178 14,403 7,249 3,813 2000-2009
Acquisitions
12,571 10,235 25,122 14,620 7,910 3,477 2000-2009
Extensions
18,161 21,037 22,024 27,157 26,312 40,831 1979-2009
New Field Discoveries
756 854 385 768 1,122 1,160 1979-2009
New Reservoir Discoveries in Old Fields
1,147 1,164 1,132 1,171 858 2,487 1979-2009
Estimated Production
17,275 16,827 17,092 18,022 19,066 19,981 1979-2009
- = 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