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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
2010 2011 2012 2013 2014 2015 View
History
Proved Reserves as of Dec. 31
2,629 2,475 2,228 1,597 2,036 2,182 1977-2015
Adjustments
32 -49 112 -274 502 305 1977-2015
Revision Increases
206 455 99 67 140 199 1977-2015
Revision Decreases
173 157 254 75 41 196 1977-2015
Sales
263 573 11 357 2 175 2000-2015
Acquisitions
148 383 21 183 0 175 2000-2015
Extensions
28 3 0 0 2 0 1977-2015
New Field Discoveries
3 2 0 0 0 0 1977-2015
New Reservoir Discoveries in Old Fields
0 0 0 0 14 0 1977-2015
Estimated Production
223 218 214 175 176 162 1977-2015
- = 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: 12/14/2016
Next Release Date: 11/30/2017