Device and method for maintaining constant pressure on, and flow drill fluid, in a drill string

Details for Australian Patent Application No. 2008264287 (hide)

Owner Siem WIS AS

Inventors Edvardsen, Per Espen; Askeland, Tom Kjetil

Agent Madderns

Pub. Number AU-A-2008264287

PCT Pub. Number WO2008/156376

Priority 20073161 21.06.07 NO

Filing date 20 June 2008

Wipo publication date 24 December 2008

International Classifications

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

E21B 21/10 (2006.01) Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Event Publications

21 January 2010 PCT application entered the National Phase

  PCT publication WO2008/156376 Priority application(s): WO2008/156376

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