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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
7,699 9,101 8,838 9,424 9,579 7,316 1977-2013
Adjustments
-3 3 1 -1 -2 -5 1977-2013
Revision Increases
184 1,868 622 928 752 153 1977-2013
Revision Decreases
4,068 108 452 206 339 2,400 1977-2013
Sales
0 5 131 36 2 91 2000-2013
Acquisitions
0 0 0 221 0 272 2000-2013
Extensions
18 2 14 4 45 92 1977-2013
New Field Discoveries
0 0 0 0 0 0 1977-2013
New Reservoir Discoveries in Old Fields
5 0 0 3 0 1 1977-2013
Estimated Production
354 358 317 327 299 285 1977-2013
- = 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