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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
2008 2009 2010 2011 2012 2013 View
History
Proved Reserves as of Dec. 31
541 1,079 1,667 2,381 3,569 5,420 1977-2013
Adjustments
-7 47 -2 -3 -56 -208 1977-2013
Revision Increases
63 243 848 570 924 1,096 1977-2013
Revision Decreases
75 81 722 375 292 640 1977-2013
Sales
25 2 47 113 237 13 2000-2013
Acquisitions
26 1 136 169 206 384 2000-2013
Extensions
102 401 442 572 834 1,523 1977-2013
New Field Discoveries
6 6 25 10 16 1 1977-2013
New Reservoir Discoveries in Old Fields
5 5 2 17 23 10 1977-2013
Estimated Production
65 82 94 133 230 302 1977-2013
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, 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: 12/4/2014
Next Release Date: 12/31/2015