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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
10,904 12,464 10,115 8,894 9,195 8,791 1977-2014
Adjustments
18 336 -110 -725 378 248 1977-2014
Revision Increases
610 1,070 2,850 212 1,087 793 1977-2014
Revision Decreases
503 221 5,564 1,048 636 1,036 1977-2014
Sales
71 92 1,204 353 583 139 2000-2014
Acquisitions
86 46 1,432 281 18 0 2000-2014
Extensions
2,400 1,147 850 977 396 346 1977-2014
New Field Discoveries
0 0 10 0 0 0 1977-2014
New Reservoir Discoveries in Old Fields
14 7 0 46 244 0 1977-2014
Estimated Production
687 733 613 611 603 616 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