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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
2007 2008 2009 2010 2011 2012 View
History
Proved Reserves as of Dec. 31
2,173 1,937 1,822 1,456 1,015 643 1981-2012
Adjustments
-47 10 6 -16 1 -65 1981-2012
Revision Increases
277 245 506 240 244 220 1981-2012
Revision Decreases
389 510 379 428 489 345 1981-2012
Sales
89 85 34 130 23 74 2000-2012
Acquisitions
183 77 13 190 63 37 2000-2012
Extensions
129 287 19 107 13 14 1981-2012
New Field Discoveries
266 33 71 0 0 19 1981-2012
New Reservoir Discoveries in Old Fields
31 79 36 12 0 6 1981-2012
Estimated Production
548 372 353 341 250 184 1981-2012
- = 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: 4/10/2014
Next Release Date: 4/30/2015