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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
3,279 3,673 3,486 3,308 3,592 4,359 1977-2014
Adjustments
224 140 125 -236 -20 94 1977-2014
Revision Increases
212 687 152 742 733 575 1977-2014
Revision Decreases
403 166 240 475 521 218 1977-2014
Sales
2 17 124 887 31 1,092 2000-2014
Acquisitions
1 23 122 644 31 1,409 2000-2014
Extensions
24 27 62 310 375 271 1977-2014
New Field Discoveries
0 4 0 5 0 0 1977-2014
New Reservoir Discoveries in Old Fields
0 1 1 0 0 0 1977-2014
Estimated Production
334 305 285 281 283 272 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