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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
16,556 15,592 14,662 14,316 13,586 11,734 1979-2012
Adjustments
129 -26 412 71 87 80 1979-2012
Revision Increases
2,445 2,631 1,196 2,134 1,932 1,900 1979-2012
Revision Decreases
2,425 2,659 1,531 1,711 2,172 3,056 1979-2012
Sales
502 314 245 104 962 100 2000-2012
Acquisitions
284 185 252 150 992 57 2000-2012
Extensions
524 491 246 244 440 267 1979-2012
New Field Discoveries
22 0 1 0 0 0 1979-2012
New Reservoir Discoveries in Old Fields
11 2 3 1 9 4 1979-2012
Estimated Production
1,264 1,274 1,264 1,131 1,056 1,004 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