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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
976 944 778 602 575 667 1977-2014
Adjustments
135 -19 -59 38 3 39 1977-2014
Revision Increases
132 103 43 31 113 89 1977-2014
Revision Decreases
210 100 97 191 49 54 1977-2014
Sales
3 40 44 30 72 2 2000-2014
Acquisitions
3 30 44 4 4 1 2000-2014
Extensions
32 86 14 37 36 77 1977-2014
New Field Discoveries
0 0 7 0 0 0 1977-2014
New Reservoir Discoveries in Old Fields
0 1 1 0 0 0 1977-2014
Estimated Production
113 93 75 65 62 58 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