Drilling system and method

Details for Australian Patent Application No. 2004265457 (hide)

Owner Shell Internationale Research Maatschappij B.V.

Inventors Van Riet, Egbert Jan; Reitsma, Donald Gordon

Agent Spruson & Ferguson

Pub. Number AU-B-2004265457

PCT Pub. Number WO2005/017308

Priority 03077606.6 19.08.03 EP

Filing date 27 July 2004

Wipo publication date 24 February 2005

Acceptance publication date 26 April 2007

International Classifications

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

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

Event Publications

2 March 2006 PCT application entered the National Phase

  PCT publication WO2005/017308 Priority application(s): WO2005/017308

26 April 2007 Application Accepted

  Published as AU-B-2004265457

23 August 2007 Standard Patent Sealed

11 September 2008 Assignment Registered

  Shell Internationale Research Maatschappij B.V. The patent has been assigned to @Balance B.V.

25 February 2010 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This patent ceased under section 143(a), or Expired. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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