Casing bit and casing reamer designs

Details for Australian Patent Application No. 2010256521 (hide)

Owner Varel International, Ind., L.P.

Inventors King, William W.; Drews, Steven W.; Reese, Michael R.; Kirk, Ian Alastair

Agent A J Park

Pub. Number AU-A-2010256521

PCT Pub. Number WO2010/141781

Priority 12/793,489 03.06.10 US; 61/184,635 05.06.09 US

Filing date 3 June 2010

Wipo publication date 9 December 2010

International Classifications

E21B 10/36 (2006.01) Drilling tools - Percussion drill bits

Event Publications

6 October 2011 PCT application entered the National Phase

  PCT publication WO2010/141781 Priority application(s): WO2010/141781

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