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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
2007 2008 2009 2010 2011 2012 View
History
Proved Reserves as of Dec. 31
1,270 1,139 1,090 1,021 976 995 1979-2012
Adjustments
1 -1 1 -2 -1 -1 1979-2012
Revision Increases
70 149 191 392 95 263 1979-2012
Revision Decreases
103 153 103 195 128 142 1979-2012
Sales
8 0 4 132 34 2 2000-2012
Acquisitions
5 0 0 0 171 0 2000-2012
Extensions
22 18 2 13 1 30 1979-2012
New Field Discoveries
0 0 0 0 0 0 1979-2012
New Reservoir Discoveries in Old Fields
0 5 0 0 3 0 1979-2012
Estimated Production
164 149 136 145 152 129 1979-2012
- = 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: 4/10/2014
Next Release Date: 4/30/2015