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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
3,577 6,985 13,960 26,529 36,348 49,674 1977-2013
Adjustments
-201 65 -373 -224 -240 664 1977-2013
Revision Increases
655 668 2,892 7,077 5,466 7,166 1977-2013
Revision Decreases
502 502 1,938 4,872 6,393 7,128 1977-2013
Sales
275 52 678 799 4 103 2000-2013
Acquisitions
168 600 930 1,884 12 351 2000-2013
Extensions
489 2,774 5,779 10,264 12,805 15,544 1977-2013
New Field Discoveries
61 128 50 165 414 36 1977-2013
New Reservoir Discoveries in Old Fields
32 0 904 322 0 79 1977-2013
Estimated Production
211 273 591 1,248 2,241 3,283 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