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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
4,506 3,950 3,777 3,006 2,309 2,315 1979-2013
Adjustments
-29 150 229 -274 184 -127 1979-2013
Revision Increases
750 491 642 431 451 247 1979-2013
Revision Decreases
362 1,242 894 698 1,031 193 1979-2013
Sales
62 188 124 60 281 158 2000-2013
Acquisitions
68 97 48 69 74 103 2000-2013
Extensions
241 491 262 17 136 358 1979-2013
New Field Discoveries
0 1 0 0 0 0 1979-2013
New Reservoir Discoveries in Old Fields
5 3 0 0 0 3 1979-2013
Estimated Production
372 359 336 256 230 227 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