Drilling head for reborinq a stuck valve

Details for Australian Patent Application No. 2008221114 (hide)

Owner Weltec A/S

Inventors Jensen, Svend Karsten; Hallundbaek, Jorgen; Andersen, Thomas Sune

Agent Davies Collison Cave

Pub. Number AU-A-2008221114

PCT Pub. Number WO2008/104179

Priority PA 2007 00302 28.02.07 DK

Filing date 28 February 2008

Wipo publication date 4 September 2008

International Classifications

E21B 11/00 (2006.01) Other drilling tools

E21B 10/26 (2006.01) Drilling tools - Drill bits with leading portion, i.e. drill bits with a pilot cutter

E21B 29/00 (2006.01) Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows

E21B 34/06 (2006.01) Valve arrangements for boreholes or wells

Event Publications

10 September 2009 PCT application entered the National Phase

  PCT publication WO2008/104179 Priority application(s): WO2008/104179

5 November 2009 Amendment Made

  The nature of the amendment is: Amend the invention title to read Drilling head for reboring a stuck valve

26 November 2009 Corrigenda

  PCT applications that have entered the National Phase - Name Index Under the name Welltec A/S, Application No. 2008221114, under INID (54) correct the title to read Drilling head for reborinq a stuck valve.

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