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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
6,672 7,206 7,039 7,738 8,629 9,742 1977-2014
Adjustments
233 304 -703 395 243 -395 1977-2014
Revision Increases
828 1,082 1,056 1,115 1,154 2,164 1977-2014
Revision Decreases
1,375 1,268 1,028 1,549 1,060 1,388 1977-2014
Sales
260 363 185 385 608 734 2000-2014
Acquisitions
194 758 482 656 575 771 2000-2014
Extensions
747 568 676 1,023 1,223 1,429 1977-2014
New Field Discoveries
1 0 4 7 0 1 1977-2014
New Reservoir Discoveries in Old Fields
25 2 1 1 26 32 1977-2014
Estimated Production
545 549 470 564 662 767 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