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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
3,710 3,417 3,858 3,620 3,231 3,339 1979-2013
Adjustments
-12 246 168 149 -333 2 1979-2013
Revision Increases
343 205 718 144 757 735 1979-2013
Revision Decreases
519 421 163 249 461 479 1979-2013
Sales
17 3 17 132 952 30 2000-2013
Acquisitions
32 1 21 130 693 9 2000-2013
Extensions
78 25 26 13 180 137 1979-2013
New Field Discoveries
6 0 3 0 0 0 1979-2013
New Reservoir Discoveries in Old Fields
2 0 1 1 0 0 1979-2013
Estimated Production
368 346 316 294 273 266 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