Optical position sensing for well control tools

Details for Australian Patent Application No. 2002352612 (hide)

Owner Baker Hughes Incorporated

Inventors Jennings, Steven, L.; Zisk, Edward, J., Jr.; Carmody, Michael, A.; Bussear, Terry, R.; Norris, Michael, W.; Hopmann, Don, A

Agent Freehills

Pub. Number AU-B-2002352612

PCT Number PCT/US02/36080

PCT Pub. Number WO2003/042498

Priority 60/332,478 14.11.01 US

Filing date 8 November 2002

Wipo publication date 26 May 2003

Acceptance publication date 28 February 2008

International Classifications

E21B 47/09 (2006.01) Survey of boreholes or wells

E21B 34/14 (2006.01) Valve arrangements for boreholes or wells

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

20 March 2003 Complete Application Filed

  Priority application(s): 60/332,478 14.11.01 US

24 July 2003 Application Open to Public Inspection

  Published as AU-B-2002352612

28 February 2008 Application Accepted

  Published as AU-B-2002352612

26 June 2008 Standard Patent Sealed

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