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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
7,888 17,220 26,063 27,313 18,385 16,933 1979-2013
Adjustments
-63 154 -484 144 124 224 1979-2013
Revision Increases
664 1,168 2,594 3,093 2,913 2,527 1979-2013
Revision Decreases
556 2,296 2,489 5,330 12,096 3,243 1979-2013
Sales
917 82 598 4,948 276 964 2000-2013
Acquisitions
1,157 51 564 5,009 176 1,127 2000-2013
Extensions
1,616 9,580 10,751 5,693 2,839 766 1979-2013
New Field Discoveries
159 255 48 0 0 1 1979-2013
New Reservoir Discoveries in Old Fields
147 1,494 173 144 0 0 1979-2013
Estimated Production
683 992 1,716 2,555 2,608 1,890 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