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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
5,626 10,869 14,178 16,370 11,035 13,518 1977-2013
Adjustments
-64 5 -34 728 -743 -78 1977-2013
Revision Increases
1,249 1,912 1,072 631 1,754 560 1977-2013
Revision Decreases
189 621 301 324 6,610 284 1977-2013
Sales
19 54 393 6,760 1 4 2000-2013
Acquisitions
5 36 807 6,880 6 9 2000-2013
Extensions
1,754 4,627 3,082 2,093 1,399 3,419 1977-2013
New Field Discoveries
0 0 0 0 0 0 1977-2013
New Reservoir Discoveries in Old Fields
41 36 27 23 11 1 1977-2013
Estimated Production
456 698 951 1,079 1,151 1,140 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