Invention Grant
- Patent Title: Wellhead conversion system and method
- Patent Title (中): 井口转换系统和方法
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Application No.: US12399050Application Date: 2009-03-06
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Publication No.: US08151892B2Publication Date: 2012-04-10
- Inventor: Gregory Williams , James Bower
- Applicant: Gregory Williams , James Bower
- Applicant Address: US TX Houston
- Assignee: Dril-Quip, Inc.
- Current Assignee: Dril-Quip, Inc.
- Current Assignee Address: US TX Houston
- Agency: Baker Botts L.L.P.
- Main IPC: E21B19/00
- IPC: E21B19/00

Abstract:
Methods and systems relating to subsea wellhead orientation are disclosed. A system may include a wellhead with an orientation key on an outer surface and an opening on an inner surface and a Christmas tree attached to a guide tube having an orientation profile which engages the orientation key and guides the Christmas tree into a desired orientation relative to the wellhead. The system may also include a lockdown sleeve with a mating profile on an inner surface, and a protuberance on an outer surface which engages the opening on the inner surface of the wellhead when the lockdown sleeve is in a desired orientation relative to the wellhead. In addition, the system may include a tubing hanger with a mating profile on an outer surface which engages the mating profile of the lockdown sleeve and guides the tubing hanger into a desired orientation relative to the lockdown sleeve.
Public/Granted literature
- US20100224373A1 Wellhead Conversion System and Method Public/Granted day:2010-09-09
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