Invention Grant
- Patent Title: Inner drilling riser tie-back connector for subsea wellheads
- Patent Title (中): 用于海底井口的内钻式立管接头连接器
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Application No.: US14137124Application Date: 2013-12-20
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Publication No.: US09303480B2Publication Date: 2016-04-05
- Inventor: Gregory Dale Williams
- Applicant: Dril-Quip, Inc.
- 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: E21B33/038
- IPC: E21B33/038

Abstract:
A method and system for coupling a riser to a subsea wellhead are disclosed. A first terminal end of a riser comprised of an inner riser and an outer riser is coupled to the platform and a second terminal end of the riser is coupled to a wellhead. The second terminal end of the inner riser is coupled to an inner drilling riser tie-back connector (“ITBC”) having a main body. The ITBC is landed on a landing shoulder disposed within the subsea wellhead. A downward weight is applied to the main body. The application of the downward weight to the main body couples the ITBC and the subsea wellhead.
Public/Granted literature
- US20150176358A1 INNER DRILLING RISER TIE-BACK CONNECTOR FOR SUBSEA WELLHEADS Public/Granted day:2015-06-25
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