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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
9,492 8,500 7,807 6,846 5,802 5,457 1981-2010
Adjustments
1 -10 1 -11 -3 -25 1981-2010
Revision Increases
1,149 1,274 963 886 997 1,814 1981-2010
Revision Decreases
1,443 1,445 1,172 1,073 1,021 1,000 1981-2010
Sales
657 1,261 674 587 108 697 2000-2010
Acquisitions
566 1,150 804 481 152 594 2000-2010
Extensions
523 487 410 350 189 139 1981-2010
New Field Discoveries
532 58 309 195 25 65 1981-2010
New Reservoir Discoveries in Old Fields
347 329 294 169 150 83 1981-2010
Estimated Production
1,607 1,574 1,628 1,371 1,425 1,318 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