Invention Grant
US08950483B2 System and method for umbilical-less positional feedback of a subsea wellhead member disposed in a subsea wellhead assembly
有权
设置在海底井口组件中的海底井口构件的无脐位置反馈的系统和方法
- Patent Title: System and method for umbilical-less positional feedback of a subsea wellhead member disposed in a subsea wellhead assembly
- Patent Title (中): 设置在海底井口组件中的海底井口构件的无脐位置反馈的系统和方法
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Application No.: US13548891Application Date: 2012-07-13
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Publication No.: US08950483B2Publication Date: 2015-02-10
- Inventor: Guy Harvey Mason , Stephen Paul Fenton
- Applicant: Guy Harvey Mason , Stephen Paul Fenton
- Applicant Address: GB Bridge of Don, Aberdeen
- Assignee: Vetco Gray U.K. Limited
- Current Assignee: Vetco Gray U.K. Limited
- Current Assignee Address: GB Bridge of Don, Aberdeen
- Agency: Bracewell & Giuliani LLP
- Main IPC: E21B47/092
- IPC: E21B47/092

Abstract:
A positional feedback system includes a seal assembly coupled to a running tool, the seal assembly having a seal ring and an energizing ring positioned between a hanger and a subsea wellhead. The energizing ring moves relative to the seal ring from an unset position to a set position to seal to the wellhead and the hanger. The system includes a magnet disposed on the energizing ring and having a magnetic field. One or more sensing devices are disposed on running tool and positioned in the magnetic field of the magnet in the set position and the unset position. The sensing devices are configured to communicate with a surface platform when the rare earth magnet passes a magnetic field through the sensing devices.
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