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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
371 502 502 402 327 225 1981-2015
Adjustments
-228 0 213 -83 -51 -23 1981-2015
Revision Increases
66 55 122 72 12 21 1981-2015
Revision Decreases
84 18 248 47 51 55 1981-2015
Sales
67 11 24 4 3 12 2000-2015
Acquisitions
42 139 9 0 20 6 2000-2015
Extensions
2 15 12 12 17 1 1981-2015
New Field Discoveries
0 0 0 16 25 0 1981-2015
New Reservoir Discoveries in Old Fields
13 0 0 0 8 0 1981-2015
Estimated Production
74 49 84 66 52 40 1981-2015
- = 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