DRILLING FLUID CIRCULATION SYSTEM AND METHOD

Details for Australian Patent Application No. 2003295723 (hide)

Owner BAKER HUGHES INCORPORATED

Inventors FONTANA, Peter; FINCHER, Roger; ARONSTAM, Peter, S.; WATKINS, Larry, A.

Pub. Number AU-A-2003295723

PCT Number PCT/US2003/0371

PCT Pub. Number WO2004/048747

Priority 60/428,423 22.11.02 US

Filing date 19 November 2003

Wipo publication date 18 June 2004

International Classifications

E21B 021/08 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E21B 021/00 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Event Publications

22 April 2004 Complete Application Filed

  Priority application(s): 60/428,423 22.11.02 US

22 July 2004 Application Open to Public Inspection

  Published as AU-A-2003295723

18 August 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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