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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
2010 2011 2012 2013 2014 2015 View
History
Proved Reserves as of Dec. 31
4,226 4,379 4,386 4,633 5,799 5,468 1977-2015
Adjustments
-200 -124 59 -194 252 159 1977-2015
Revision Increases
480 502 814 1,014 1,442 663 1977-2015
Revision Decreases
418 431 850 715 805 1,592 1977-2015
Sales
133 199 311 483 15 240 2000-2015
Acquisitions
419 257 111 285 51 272 2000-2015
Extensions
326 520 583 698 701 934 1977-2015
New Field Discoveries
0 3 1 0 1 0 1977-2015
New Reservoir Discoveries in Old Fields
3 2 4 89 3 1 1977-2015
Estimated Production
392 377 404 447 464 528 1977-2015
- = 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: 12/14/2016
Next Release Date: 11/30/2017