Remote Actuation of Downhole Tools Using Fluid Pressure from Surface

Details for Australian Patent Application No. 2008202761 (hide)

Owner Petrowell Limited

Inventors Purkis, Daniel

Agent Wrays

Pub. Number AU-A-2008202761

Priority 0715970.0 16.08.07 GB

Filing date 23 June 2008

Wipo publication date 5 March 2009

International Classifications

E21B 47/12 (2006.01) Survey of boreholes or wells - Means for transmitting measuring-signals from the well to the surface, e.g. for logging while drilling

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

Event Publications

10 July 2008 Complete Application Filed

  Priority application(s): 0715970.0 16.08.07 GB

5 March 2009 Application Open to Public Inspection

  Published as AU-A-2008202761

6 September 2012 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(a). A direction to request examination has been given for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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