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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
2,445 2,463 2,496 2,125 2,586 2,254 1979-2013
Adjustments
-84 98 -42 -32 187 -118 1979-2013
Revision Increases
420 572 399 437 660 209 1979-2013
Revision Decreases
654 522 498 391 375 397 1979-2013
Sales
138 32 55 579 36 85 2000-2013
Acquisitions
138 36 205 356 91 255 2000-2013
Extensions
209 231 266 78 214 119 1979-2013
New Field Discoveries
36 4 1 49 4 0 1979-2013
New Reservoir Discoveries in Old Fields
61 56 95 23 12 8 1979-2013
Estimated Production
503 425 338 312 296 323 1979-2013
- = 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