Shear type circulation valve and swivel with open port reciprocating feature

Details for Australian Patent Application No. 2007267548 (hide)

Owner Baker Hughes Incorporated

Inventors Ashy, Thomas M.; Hern, Gregory L.

Agent Freehills

Pub. Number AU-B-2007267548

PCT Pub. Number WO2007/140310

Priority 60/809,378 30.05.06 US; 11/751,960 22.05.07 US

Filing date 25 May 2007

Wipo publication date 6 December 2007

Acceptance publication date 10 November 2011

International Classifications

E21B 21/10 (2006.01) Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E21B 23/00 (2006.01) Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells

E21B 34/12 (2006.01) Valve arrangements for boreholes or wells

Event Publications

15 January 2009 PCT application entered the National Phase

  PCT publication WO2007/140310 Priority application(s): WO2007/140310

10 November 2011 Application Accepted

  Published as AU-B-2007267548

8 March 2012 Standard Patent Sealed

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