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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
2,588 2,260 2,154 2,307 2,199 1,937 1977-2015
Adjustments
82 -95 164 49 -191 34 1977-2015
Revision Increases
482 375 604 547 370 310 1977-2015
Revision Decreases
319 252 631 284 264 420 1977-2015
Sales
184 274 214 103 142 24 2000-2015
Acquisitions
199 204 182 130 171 22 2000-2015
Extensions
175 104 121 119 222 112 1977-2015
New Field Discoveries
20 16 10 3 27 0 1977-2015
New Reservoir Discoveries in Old Fields
25 3 8 9 20 11 1977-2015
Estimated Production
508 409 350 317 321 307 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