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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
2,960 2,445 2,463 2,496 2,125 2,586 1979-2012
Adjustments
112 -84 98 -42 -32 187 1979-2012
Revision Increases
412 420 572 399 437 660 1979-2012
Revision Decreases
553 654 522 498 391 375 1979-2012
Sales
150 138 32 55 579 36 2000-2012
Acquisitions
278 138 36 205 356 91 2000-2012
Extensions
299 209 231 266 78 214 1979-2012
New Field Discoveries
0 36 4 1 49 4 1979-2012
New Reservoir Discoveries in Old Fields
101 61 56 95 23 12 1979-2012
Estimated Production
597 503 425 338 312 296 1979-2012
- = 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