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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
2007 2008 2009 2010 2011 2012 View
History
Proved Reserves as of Dec. 31
7,807 6,846 5,802 5,457 4,359 3,346 1981-2012
Adjustments
1 -11 -3 -25 72 -296 1981-2012
Revision Increases
963 886 997 1,814 740 866 1981-2012
Revision Decreases
1,172 1,073 1,021 1,000 1,219 1,161 1981-2012
Sales
674 587 108 697 243 339 2000-2012
Acquisitions
804 481 152 594 355 496 2000-2012
Extensions
410 350 189 139 53 106 1981-2012
New Field Discoveries
309 195 25 65 66 3 1981-2012
New Reservoir Discoveries in Old Fields
294 169 150 83 38 22 1981-2012
Estimated Production
1,628 1,371 1,425 1,318 960 710 1981-2012
- = 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, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 4/10/2014
Next Release Date: 4/30/2015