Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure

Details for Australian Patent Application No. 2007322444 (hide)

Owner StatoilHydro ASA

Inventors Dirdal, Rolf

Agent Phillips Ormonde Fitzpatrick

Pub. Number AU-A-2007322444

PCT Pub. Number WO2008/063072

Priority 20065403 23.11.06 NO

Filing date 12 November 2007

Wipo publication date 29 May 2008

International Classifications

E21B 21/08 (2006.01) Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Event Publications

18 June 2009 PCT application entered the National Phase

  PCT publication WO2008/063072 Priority application(s): WO2008/063072

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