Variable force/variable frequency sonic drill head

Details for Australian Patent Application No. 2010241989 (hide)

Owner Longyear TM, Inc.

Inventors Light, Trevor Lyndon

Agent Cotters

Pub. Number AU-A-2010241989

PCT Pub. Number WO2010/126990

Priority 61/173,905 29.04.09 US; 12/768,390 27.04.10 US

Filing date 28 April 2010

Wipo publication date 4 November 2010

International Classifications

E21B 7/24 (2006.01) Special methods or apparatus for drilling

E21B 19/08 (2006.01) Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

E21B 19/22 (2006.01) Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

Event Publications

6 October 2011 PCT application entered the National Phase

  PCT publication WO2010/126990 Priority application(s): WO2010/126990

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