CIRCULATION CONTROL DEVICE WITHIN A WELL BORE

Details for Australian Patent Application No. 2002244096 (hide)

Owner VARCO I/P, INC.

Inventors NORRIS, Robert, M.

Pub. Number AU-A-2002244096

PCT Pub. Number WO2002/075111

Priority 09/810,275 19.03.01 US

Filing date 8 March 2002

Wipo publication date 3 October 2002

International Classifications

E21B 043/12 Obtaining fluids from wells - Methods or apparatus for controlling the flow of the obtained fluid to or in wells

E21B 034/08 Valve arrangements for boreholes or wells

E21B 034/06 Valve arrangements for boreholes or wells

Event Publications

27 March 2003 Application Open to Public Inspection

  Published as AU-A-2002244096

19 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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