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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
5,734 6,670 6,705 6,364 7,888 17,220 1979-2009
Adjustments
-19 49 -18 80 -63 154 1979-2009
Revision Increases
328 333 597 432 664 1,168 1979-2009
Revision Decreases
373 232 757 407 556 2,296 1979-2009
Sales
588 70 57 2,091 917 82 2000-2009
Acquisitions
284 141 190 1,259 1,157 51 2000-2009
Extensions
1,533 1,197 626 937 1,616 9,580 1979-2009
New Field Discoveries
5 0 0 0 159 255 1979-2009
New Reservoir Discoveries in Old Fields
11 11 4 1 147 1,494 1979-2009
Estimated Production
445 493 550 552 683 992 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: 6/15/2012