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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
4,267 4,506 3,950 3,777 3,006 2,309 1979-2012
Adjustments
14 -29 150 229 -274 184 1979-2012
Revision Increases
501 750 491 642 431 451 1979-2012
Revision Decreases
423 362 1,242 894 698 1,031 1979-2012
Sales
198 62 188 124 60 281 2000-2012
Acquisitions
188 68 97 48 69 74 2000-2012
Extensions
559 241 491 262 17 136 1979-2012
New Field Discoveries
0 0 1 0 0 0 1979-2012
New Reservoir Discoveries in Old Fields
130 5 3 0 0 0 1979-2012
Estimated Production
395 372 359 336 256 230 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