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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
7,119 6,984 7,915 7,475 7,073 6,660 1979-2013
Adjustments
-18 223 -144 -5 213 23 1979-2013
Revision Increases
457 492 1,288 593 1,044 762 1979-2013
Revision Decreases
777 1,120 868 1,533 2,370 1,123 1979-2013
Sales
649 42 145 1,174 146 574 2000-2013
Acquisitions
422 57 99 639 692 647 2000-2013
Extensions
1,382 817 1,274 1,676 846 426 1979-2013
New Field Discoveries
387 0 0 4 0 0 1979-2013
New Reservoir Discoveries in Old Fields
0 0 0 15 0 83 1979-2013
Estimated Production
581 562 573 655 681 657 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