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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
4,141 4,226 4,379 4,386 4,633 5,799 1977-2014
Adjustments
251 -200 -124 59 -194 252 1977-2014
Revision Increases
541 480 502 814 1,014 1,442 1977-2014
Revision Decreases
628 418 431 850 715 805 1977-2014
Sales
149 133 199 311 483 15 2000-2014
Acquisitions
229 419 257 111 285 51 2000-2014
Extensions
317 326 520 583 698 701 1977-2014
New Field Discoveries
0 0 3 1 0 1 1977-2014
New Reservoir Discoveries in Old Fields
3 3 2 4 89 3 1977-2014
Estimated Production
454 392 377 404 447 464 1977-2014
- = 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