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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
2009 2010 2011 2012 2013 2014 View
History
Proved Reserves as of Dec. 31
12,552 11,765 10,420 9,392 8,193 8,527 1990-2014
Adjustments
22 -123 -28 -610 185 648 1990-2014
Revision Increases
2,312 2,978 2,467 2,835 1,315 2,301 1990-2014
Revision Decreases
1,871 2,242 2,993 2,611 1,328 2,244 1990-2014
Sales
158 880 318 586 1,031 330 2000-2014
Acquisitions
181 1,003 455 787 443 431 2000-2014
Extensions
289 326 94 332 258 204 1990-2014
New Field Discoveries
308 68 562 82 84 378 1990-2014
New Reservoir Discoveries in Old Fields
300 237 76 103 73 94 1990-2014
Estimated Production
2,377 2,154 1,660 1,360 1,198 1,148 1990-2014
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Idaho, 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: 11/19/2015
Next Release Date: 12/31/2016