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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
1,139 1,090 1,021 976 995 955 1979-2013
Adjustments
-1 1 -2 -1 -1 1 1979-2013
Revision Increases
149 191 392 95 263 114 1979-2013
Revision Decreases
153 103 195 128 142 301 1979-2013
Sales
0 4 132 34 2 92 2000-2013
Acquisitions
0 0 0 171 0 271 2000-2013
Extensions
18 2 13 1 30 74 1979-2013
New Field Discoveries
0 0 0 0 0 0 1979-2013
New Reservoir Discoveries in Old Fields
5 0 0 3 0 1 1979-2013
Estimated Production
149 136 145 152 129 108 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