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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
2,807 2,360 2,173 1,937 1,822 1,456 1981-2010
Adjustments
2 -1 -47 10 6 -16 1981-2010
Revision Increases
704 277 277 245 506 240 1981-2010
Revision Decreases
652 442 389 510 379 428 1981-2010
Sales
130 1,056 89 85 34 130 2000-2010
Acquisitions
115 1,114 183 77 13 190 2000-2010
Extensions
91 203 129 287 19 107 1981-2010
New Field Discoveries
9 29 266 33 71 0 1981-2010
New Reservoir Discoveries in Old Fields
150 59 31 79 36 12 1981-2010
Estimated Production
740 630 548 372 353 341 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