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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
4,865 5,243 6,066 7,134 10,480 14,860 1979-2012
Adjustments
16 281 249 -370 -36 275 1979-2012
Revision Increases
318 400 392 1,055 1,214 1,733 1979-2012
Revision Decreases
370 450 881 1,098 767 2,189 1979-2012
Sales
2 164 55 909 244 280 2000-2012
Acquisitions
25 121 2 993 568 107 2000-2012
Extensions
425 443 1,219 1,628 2,871 5,227 1979-2012
New Field Discoveries
11 0 170 0 0 104 1979-2012
New Reservoir Discoveries in Old Fields
1 1 9 66 139 0 1979-2012
Estimated Production
197 254 282 297 399 597 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