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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
215,121 226,012 250,496 281,901 305,986 269,514 1979-2012
Adjustments
714 -184 5,046 1,774 2,325 -1,195 1979-2012
Revision Increases
28,004 28,998 27,142 37,411 47,927 34,343 1979-2012
Revision Decreases
15,664 27,810 31,865 34,375 50,174 81,869 1979-2012
Sales
14,403 7,249 3,813 9,436 43,237 8,819 2000-2012
Acquisitions
14,620 7,910 3,477 10,879 45,989 5,941 2000-2012
Extensions
27,157 26,312 40,831 43,623 41,678 37,023 1979-2012
New Field Discoveries
768 1,122 1,160 793 376 629 1979-2012
New Reservoir Discoveries in Old Fields
1,171 858 2,487 1,515 1,100 179 1979-2012
Estimated Production
18,022 19,066 19,981 20,779 21,899 22,704 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