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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
3,258 2,807 2,360 2,173 1,937 1,822 1981-2009
Adjustments
25 2 -1 -47 10 6 1981-2009
Revision Increases
2,025 704 277 277 245 506 1981-2009
Revision Decreases
2,316 652 442 389 510 379 1981-2009
Sales
212 130 1,056 89 85 34 2000-2009
Acquisitions
198 115 1,114 183 77 13 2000-2009
Extensions
81 91 203 129 287 19 1981-2009
New Field Discoveries
44 9 29 266 33 71 1981-2009
New Reservoir Discoveries in Old Fields
75 150 59 31 79 36 1981-2009
Estimated Production
897 740 630 548 372 353 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: 6/15/2012