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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
9,651 10,581 19,898 28,838 29,906 21,362 1981-2012
Adjustments
201 -150 244 -411 165 469 1981-2012
Revision Increases
907 1,122 1,785 3,039 3,564 3,638 1981-2012
Revision Decreases
1,044 1,279 2,858 3,051 5,733 12,680 1981-2012
Sales
2,307 1,067 114 658 5,528 337 2000-2012
Acquisitions
1,589 1,300 87 792 5,509 267 2000-2012
Extensions
1,255 1,847 9,826 11,019 5,784 3,057 1981-2012
New Field Discoveries
0 195 259 49 49 4 1981-2012
New Reservoir Discoveries in Old Fields
131 208 1,550 268 167 12 1981-2012
Estimated Production
1,230 1,246 1,462 2,107 2,909 2,974 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