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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
6,393 6,810 6,515 7,199 6,774 6,162 1979-2013
Adjustments
-11 67 -50 157 304 -564 1979-2013
Revision Increases
376 1,181 776 649 1,284 447 1979-2013
Revision Decreases
491 499 163 304 1,929 245 1979-2013
Sales
260 90 543 776 1 321 2000-2013
Acquisitions
252 69 1 856 0 459 2000-2013
Extensions
761 108 89 514 358 26 1979-2013
New Field Discoveries
64 0 0 1 0 0 1979-2013
New Reservoir Discoveries in Old Fields
0 4 0 0 0 0 1979-2013
Estimated Production
393 423 405 413 441 414 1979-2013
- = 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