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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
213,308 220,416 247,789 255,035 283,879 317,647 1979-2010
Adjustments
1,693 946 990 271 5,923 1,292 1979-2010
Revision Increases
23,362 21,640 33,404 31,941 32,664 42,394 1979-2010
Revision Decreases
20,647 23,739 17,468 35,195 34,563 38,339 1979-2010
Sales
9,632 23,904 15,518 7,911 4,377 10,582 2000-2010
Acquisitions
12,306 27,082 15,970 8,848 4,155 13,348 2000-2010
Extensions
22,069 22,834 28,255 27,800 43,500 46,283 1979-2010
New Field Discoveries
973 425 814 1,229 1,423 895 1979-2010
New Reservoir Discoveries in Old Fields
1,243 1,197 1,244 1,678 2,656 1,701 1979-2010
Estimated Production
19,259 19,373 20,318 21,415 22,537 23,224 1979-2010
- = 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