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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
917 853 860 607 595 558 1977-2014
Adjustments
26 1 109 65 29 -15 1977-2014
Revision Increases
92 77 105 91 39 82 1977-2014
Revision Decreases
250 70 156 300 75 29 1977-2014
Sales
17 31 11 159 39 115 2000-2014
Acquisitions
2 13 10 109 90 82 2000-2014
Extensions
132 33 24 4 5 9 1977-2014
New Field Discoveries
2 0 1 1 0 1 1977-2014
New Reservoir Discoveries in Old Fields
0 0 0 0 0 2 1977-2014
Estimated Production
100 87 75 64 61 54 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