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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
2009 2010 2011 2012 2013 2014 View
History
Proved Reserves as of Dec. 31
2,871 2,629 2,475 2,228 1,597 2,036 1977-2014
Adjustments
46 32 -49 112 -274 502 1977-2014
Revision Increases
99 206 455 99 67 140 1977-2014
Revision Decreases
328 173 157 254 75 41 1977-2014
Sales
2 263 573 11 357 2 2000-2014
Acquisitions
0 148 383 21 183 0 2000-2014
Extensions
20 28 3 0 0 2 1977-2014
New Field Discoveries
0 3 2 0 0 0 1977-2014
New Reservoir Discoveries in Old Fields
0 0 0 0 0 14 1977-2014
Estimated Production
254 223 218 214 175 176 1977-2014
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Idaho, 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: 11/19/2015
Next Release Date: 12/31/2016