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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
6,695 6,715 6,344 7,876 17,143 26,030 1977-2010
Adjustments
69 -27 70 -36 167 -387 1977-2010
Revision Increases
337 603 433 668 1,166 2,593 1977-2010
Revision Decreases
252 759 424 556 2,288 2,485 1977-2010
Sales
71 57 2,065 912 83 602 2000-2010
Acquisitions
141 189 1,242 1,148 51 562 2000-2010
Extensions
1,188 619 925 1,603 9,508 10,707 1977-2010
New Field Discoveries
0 0 0 157 253 47 1977-2010
New Reservoir Discoveries in Old Fields
11 4 1 145 1,485 173 1977-2010
Estimated Production
498 552 553 685 992 1,721 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