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Estimated Dry Natural Gas contained in Total Natural Gas Proved Reserves
(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
2,378 3,091 3,215 2,832 2,579 2,373 1982-2013
Adjustments
-6 339 59 -413 66 -9 1982-2013
Revision Increases
26 256 658 378 32 137 1982-2013
Revision Decreases
246 87 560 255 332 271 1982-2013
Sales
2 0 124 3 0 1 2000-2013
Acquisitions
1 0 166 3 0 0 2000-2013
Extensions
202 383 97 63 134 80 1982-2013
New Field Discoveries
0 0 0 0 0 0 1982-2013
New Reservoir Discoveries in Old Fields
0 0 0 0 0 0 1982-2013
Estimated Production
126 178 172 156 153 142 1982-2013
- = 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, Nebraska, Nevada, Oregon, South Dakota, and Tennessee. Estimated Dry Natural Gas is calculated from Total Natural Gas Proved Reserves.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 12/4/2014
Next Release Date: 12/31/2015