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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
985 1,398 2,399 5,910 8,868 7,784 1977-2013
Adjustments
99 -22 -95 53 122 161 1977-2013
Revision Increases
41 105 424 2,221 1,896 1,141 1977-2013
Revision Decreases
145 104 320 174 1,548 2,833 1977-2013
Sales
5 35 466 1,193 32 91 2000-2013
Acquisitions
11 50 416 1,139 19 127 2000-2013
Extensions
26 143 1,023 1,657 2,884 1,076 1977-2013
New Field Discoveries
3 358 117 24 38 2 1977-2013
New Reservoir Discoveries in Old Fields
0 0 15 2 1 11 1977-2013
Estimated Production
85 82 113 218 422 678 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