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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
2005 2006 2007 2008 2009 2010 View
History
Proved Reserves as of Dec. 31
15,796 16,141 20,642 22,159 22,199 23,001 1979-2010
Adjustments
13 44 91 -70 474 578 1979-2010
Revision Increases
2,065 981 3,823 3,154 1,661 2,985 1979-2010
Revision Decreases
1,499 1,536 584 3,092 4,039 3,763 1979-2010
Sales
587 1,009 769 774 382 253 2000-2010
Acquisitions
1,123 1,009 448 1,382 446 81 2000-2010
Extensions
1,736 1,929 2,713 2,252 3,330 2,668 1979-2010
New Field Discoveries
33 15 15 18 8 23 1979-2010
New Reservoir Discoveries in Old Fields
4 27 24 17 0 29 1979-2010
Estimated Production
1,048 1,115 1,260 1,370 1,458 1,546 1979-2010
- = 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, Nebraska, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 8/2/2012
Next Release Date: 8/30/2013