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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
418 424 378 898 701 371 1981-2010
Adjustments
29 -22 12 4 -7 -228 1981-2010
Revision Increases
54 62 86 240 80 66 1981-2010
Revision Decreases
43 51 93 82 207 84 1981-2010
Sales
32 55 63 16 0 67 2000-2010
Acquisitions
29 26 51 5 4 42 2000-2010
Extensions
29 79 18 22 14 2 1981-2010
New Field Discoveries
0 17 0 0 0 0 1981-2010
New Reservoir Discoveries in Old Fields
38 33 29 442 2 13 1981-2010
Estimated Production
68 83 86 95 83 74 1981-2010
- = 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