Lockable core barrel head for drilling system and survey instrument assembly provided with a connection link for arrangement in a drilling system

Details for Australian Patent Application No. 2010315986 (hide)

Owner DEVICO AS

Inventors Borg, Eirik

Agent Collison & Co

Pub. Number AU-A-2010315986

PCT Pub. Number WO2011/056077

Priority 20093281 04.11.09 NO

Filing date 4 November 2010

Wipo publication date 12 May 2011

International Classifications

E21B 25/16 (2006.01) Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors

E21B 47/01 (2012.01) Survey of boreholes or wells

E21B 17/02 (2006.01) Drilling rods or pipes - Couplings

Event Publications

31 May 2012 PCT application entered the National Phase

  PCT publication WO2011/056077 Priority application(s): WO2011/056077

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