Invention Grant
- Patent Title: Flow control diverter valve
- Patent Title (中): 流量控制分流阀
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Application No.: US13007416Application Date: 2011-01-14
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Publication No.: US08733474B2Publication Date: 2014-05-27
- Inventor: Kevin James Nikiforuk
- Applicant: Kevin James Nikiforuk
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agency: Osha • Liang LLP
- Main IPC: E21B21/10
- IPC: E21B21/10

Abstract:
A method of drilling a well and installing a liner includes assembling concentric inner and outer strings of tubulars. A drill bit is located at the lower end of the inner string and a liner with a liner hanger makes up part of the outer string. The inner and outer strings may be rotated in unison to drill the well. A valve is located upstream of a liner hanger control tool used to release and set the liner hanger in the drill string. The valve comprises a ported sleeve that slides relative to a ported housing to meter flow from the interior of the drill string to the annular space. The redirected flow maintains a minimum flow rate in the annular space to prevent cuttings from settling on the control tool. A portion of the valve can further be used with a dart to manipulate downstream equipment.
Public/Granted literature
- US20120181044A1 FLOW CONTROL DIVERTER VALVE Public/Granted day:2012-07-19
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