Pressure equalizing a ball valve through an upper seal bypass

Details for Australian Patent Application No. 2010308242 (hide)

Owner Baker Hughes Incorporated

Inventors Myerley, Thomas S.

Agent Freehills

Pub. Number AU-A-2010308242

PCT Pub. Number WO2011/049970

Priority 12/582,378 20.10.09 US

Filing date 19 October 2010

Wipo publication date 28 April 2011

International Classifications

E21B 34/06 (2006.01) Valve arrangements for boreholes or wells

F16K 5/20 (2006.01) Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary

Event Publications

17 May 2012 PCT application entered the National Phase

  PCT publication WO2011/049970 Priority application(s): WO2011/049970

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