Dual acting rod piston control system

Details for Australian Patent Application No. 2010258807 (hide)

Owner Baker Hughes Incorporated

Inventors Plunkett, Kevin R.; Lindemann, John D.

Agent Freehills

Pub. Number AU-A-2010258807

PCT Pub. Number WO2010/144593

Priority 12/481,740 10.06.09 US

Filing date 9 June 2010

Wipo publication date 16 December 2010

International Classifications

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

E21B 34/10 (2006.01) Valve arrangements for boreholes or wells

F16K 31/122 (2006.01) Operating means - the fluid acting on a piston

Event Publications

15 December 2011 PCT application entered the National Phase

  PCT publication WO2010/144593 Priority application(s): WO2010/144593

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