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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
2008 2009 2010 2011 2012 2013 View
History
Proved Reserves as of Dec. 31
6,846 5,802 5,457 4,359 3,346 2,502 1981-2013
Adjustments
-11 -3 -25 72 -296 111 1981-2013
Revision Increases
886 997 1,814 740 866 443 1981-2013
Revision Decreases
1,073 1,021 1,000 1,219 1,161 467 1981-2013
Sales
587 108 697 243 339 597 2000-2013
Acquisitions
481 152 594 355 496 118 2000-2013
Extensions
350 189 139 53 106 18 1981-2013
New Field Discoveries
195 25 65 66 3 34 1981-2013
New Reservoir Discoveries in Old Fields
169 150 83 38 22 47 1981-2013
Estimated Production
1,371 1,425 1,318 960 710 551 1981-2013
- = 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: 12/4/2014
Next Release Date: 12/31/2015