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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
6,364 7,888 17,220 26,063 27,313 18,385 1979-2012
Adjustments
80 -63 154 -484 144 124 1979-2012
Revision Increases
432 664 1,168 2,594 3,093 2,913 1979-2012
Revision Decreases
407 556 2,296 2,489 5,330 12,096 1979-2012
Sales
2,091 917 82 598 4,948 276 2000-2012
Acquisitions
1,259 1,157 51 564 5,009 176 2000-2012
Extensions
937 1,616 9,580 10,751 5,693 2,839 1979-2012
New Field Discoveries
0 159 255 48 0 0 1979-2012
New Reservoir Discoveries in Old Fields
1 147 1,494 173 144 0 1979-2012
Estimated Production
552 683 992 1,716 2,555 2,608 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