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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
5,136 5,946 7,000 10,345 14,611 22,765 1977-2013
Adjustments
315 258 -359 -1 251 -565 1977-2013
Revision Increases
390 383 1,034 1,218 1,701 2,120 1977-2013
Revision Decreases
444 865 1,075 759 2,162 2,547 1977-2013
Sales
160 54 895 265 275 47 2000-2013
Acquisitions
118 2 984 590 105 0 2000-2013
Extensions
437 1,190 1,594 2,820 5,132 9,827 1977-2013
New Field Discoveries
0 166 0 0 102 94 1977-2013
New Reservoir Discoveries in Old Fields
1 8 64 137 0 0 1977-2013
Estimated Production
250 278 293 395 588 728 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