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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
2,242 3,305 2,943 2,787 2,290 1,487 1977-2015
Adjustments
68 -65 666 -162 -170 38 1977-2015
Revision Increases
260 387 41 405 203 48 1977-2015
Revision Decreases
231 344 983 223 355 747 1977-2015
Sales
3 683 142 18 2 353 2000-2015
Acquisitions
0 1,855 116 15 0 348 2000-2015
Extensions
220 109 205 2 8 25 1977-2015
New Field Discoveries
0 0 0 0 0 0 1977-2015
New Reservoir Discoveries in Old Fields
0 0 0 53 0 0 1977-2015
Estimated Production
149 196 265 228 181 162 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