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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
13,665 11,824 11,090 10,450 9,362 8,896 1981-2010
Adjustments
21 -37 -16 10 2 -106 1981-2010
Revision Increases
1,408 1,606 1,430 1,230 1,637 2,617 1981-2010
Revision Decreases
1,903 2,201 1,429 1,312 1,417 1,771 1981-2010
Sales
716 1,532 803 616 124 741 2000-2010
Acquisitions
628 1,341 991 532 159 785 2000-2010
Extensions
546 530 525 610 270 186 1981-2010
New Field Discoveries
618 82 304 279 48 68 1981-2010
New Reservoir Discoveries in Old Fields
375 343 330 379 223 213 1981-2010
Estimated Production
1,997 1,973 2,066 1,752 1,886 1,717 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