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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
30,531 32,176 36,386 36,192 36,612 30,930 1979-2012
Adjustments
34 10 1,209 542 -50 793 1979-2012
Revision Increases
4,852 5,492 5,344 5,038 3,363 1,811 1979-2012
Revision Decreases
1,860 4,409 3,652 5,688 3,074 6,998 1979-2012
Sales
289 211 172 1,314 1,181 560 2000-2012
Acquisitions
653 129 37 1,308 1,240 634 2000-2012
Extensions
4,851 2,666 3,641 2,191 2,272 678 1979-2012
New Field Discoveries
2 1 0 0 0 0 1979-2012
New Reservoir Discoveries in Old Fields
0 33 91 0 1 11 1979-2012
Estimated Production
1,828 2,066 2,288 2,271 2,151 2,051 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