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Dry Natural Gas Proved Reserves
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2005 2006 2007 2008 2009 2010 View
History
Proved Reserves as of Dec. 31
802 1,471 2,117 2,382 2,077 2,242 1977-2010
Adjustments
-33 -61 -38 -12 63 68 1977-2010
Revision Increases
142 197 154 154 144 260 1977-2010
Revision Decreases
50 67 74 307 193 231 1977-2010
Sales
23 48 41 27 494 3 2000-2010
Acquisitions
121 57 78 16 27 0 2000-2010
Extensions
400 681 706 626 319 220 1977-2010
New Field Discoveries
0 0 0 1 0 0 1977-2010
New Reservoir Discoveries in Old Fields
0 0 0 1 0 0 1977-2010
Estimated Production
65 90 139 187 171 149 1977-2010
- = 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, Nebraska, Nevada, Oregon, South Dakota, and Tennessee.  See Definitions, Sources, and Notes link above for more information on this table.
Release Date: 8/2/2012
Next Release Date: 8/30/2013