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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
32,176 36,386 36,192 36,612 30,930 33,774 1979-2013
Adjustments
10 1,209 542 -50 793 1,501 1979-2013
Revision Increases
5,492 5,344 5,038 3,363 1,811 3,806 1979-2013
Revision Decreases
4,409 3,652 5,688 3,074 6,998 1,614 1979-2013
Sales
211 172 1,314 1,181 560 660 2000-2013
Acquisitions
129 37 1,308 1,240 634 679 2000-2013
Extensions
2,666 3,641 2,191 2,272 678 1,116 1979-2013
New Field Discoveries
1 0 0 0 0 0 1979-2013
New Reservoir Discoveries in Old Fields
33 91 0 1 11 0 1979-2013
Estimated Production
2,066 2,288 2,271 2,151 2,051 1,984 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