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Dry Natural Gas Proved Reserves
(Billion Cubic Feet)
Area: Period:
 Annual 
 Show Data By:
Data Series Area
2004 2005 2006 2007 2008 2009 View
History
Proved Reserves as of Dec. 31
324 349 363 376 389 196 1977-2009
Adjustments
-93 18 33 33 -11 -84 1977-2009
Revision Increases
81 51 22 46 72 39 1977-2009
Revision Decreases
75 20 38 45 47 59 1977-2009
Sales
12 1 55 3 0 54 2000-2009
Acquisitions
15 2 52 0 22 0 2000-2009
Extensions
87 7 5 19 25 0 1977-2009
New Field Discoveries
0 20 45 7 0 0 1977-2009
New Reservoir Discoveries in Old Fields
0 0 0 0 0 0 1977-2009
Estimated Production
44 52 50 44 48 35 1977-2009
- = 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: 12/30/2010
Next Release Date: 12/30/2011