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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
3,334 3,335 3,323 2,799 2,844 2,876 1977-2010
Adjustments
32 135 110 -39 159 3 1977-2010
Revision Increases
485 526 492 479 617 490 1977-2010
Revision Decreases
554 607 587 738 610 615 1977-2010
Sales
121 388 175 141 44 69 2000-2010
Acquisitions
208 523 358 134 48 243 2000-2010
Extensions
343 328 304 223 285 280 1977-2010
New Field Discoveries
6 10 0 34 4 1 1977-2010
New Reservoir Discoveries in Old Fields
139 148 104 63 55 93 1977-2010
Estimated Production
640 674 618 539 469 394 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