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Nonassociated Natural Gas Proved Reserves, Wet After Lease Separation
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2008 2009 2010 2011 2012 2013 View
History
Proved Reserves as of Dec. 31
1,937 1,822 1,456 1,015 643 535 1981-2013
Adjustments
10 6 -16 1 -65 110 1981-2013
Revision Increases
245 506 240 244 220 103 1981-2013
Revision Decreases
510 379 428 489 345 80 1981-2013
Sales
85 34 130 23 74 160 2000-2013
Acquisitions
77 13 190 63 37 31 2000-2013
Extensions
287 19 107 13 14 10 1981-2013
New Field Discoveries
33 71 0 0 19 0 1981-2013
New Reservoir Discoveries in Old Fields
79 36 12 0 6 18 1981-2013
Estimated Production
372 353 341 250 184 140 1981-2013
- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Notes: Miscellaneous States includes Arizona, Illinois, Indiana, Maryland, Missouri, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 12/4/2014
Next Release Date: 12/31/2015