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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
6,981 7,857 7,548 6,829 6,685 3,547 1977-2015
Adjustments
-80 134 289 -582 -20 177 1977-2015
Revision Increases
872 813 1,349 484 752 97 1977-2015
Revision Decreases
219 341 1,926 444 617 3,125 1977-2015
Sales
530 758 12 478 23 42 2000-2015
Acquisitions
7 833 22 640 31 0 2000-2015
Extensions
106 643 447 117 164 160 1977-2015
New Field Discoveries
0 1 0 0 2 0 1977-2015
New Reservoir Discoveries in Old Fields
0 0 0 0 0 0 1977-2015
Estimated Production
432 449 478 456 433 405 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