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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
2,763 2,919 2,505 1,750 1,807 1,845 1977-2014
Adjustments
-279 243 8 -104 -62 -47 1977-2014
Revision Increases
367 260 210 541 388 290 1977-2014
Revision Decreases
406 378 267 1,062 139 90 1977-2014
Sales
0 529 643 0 11 1 2000-2014
Acquisitions
16 711 403 0 11 8 2000-2014
Extensions
16 1 0 0 0 1 1977-2014
New Field Discoveries
19 2 14 7 0 0 1977-2014
New Reservoir Discoveries in Old Fields
9 0 0 1 3 1 1977-2014
Estimated Production
153 154 139 138 133 124 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