Wellbore fluids for casing drilling

Details for Australian Patent Application No. 2008206479 (hide)

Owner M-I LLC

Inventors Oakley, Doug; Norman, Monica; Massam, Jarrod; Prebensen, Ole Iacob

Agent Pizzeys

Pub. Number AU-A-2008206479

PCT Pub. Number WO2008/089001

Priority 11/965,393 27.12.07 US; 60/884,841 12.01.07 US

Filing date 9 January 2008

Wipo publication date 24 July 2008

International Classifications

E21B 4/00 (2006.01) Drives for drilling, used in the borehole

E21B 6/00 (2006.01) Drives for drilling with combined rotary and percussive action

Event Publications

30 July 2009 PCT application entered the National Phase

  PCT publication WO2008/089001 Priority application(s): WO2008/089001

26 April 2012 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(e). Examination has been requested or an examination report has issued for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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