Invention Grant
- Patent Title: Off shore riser fixation system and method
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Application No.: US17641755Application Date: 2019-09-09
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Publication No.: US11773661B2Publication Date: 2023-10-03
- Inventor: Sergio Simões , Otávio Borges Sertã
- Applicant: SAIPEM S.P.A.
- Applicant Address: IT Milan
- Assignee: SAIPEM S.P.A.
- Current Assignee: SAIPEM S.P.A.
- Current Assignee Address: IT San Donato Milanese
- Agency: Merchant & Gould P.C.
- International Application: PCT/IB2019/057581 2019.09.09
- International Announcement: WO2021/048592A 2021.03.18
- Date entered country: 2022-03-09
- Main IPC: E21B19/00
- IPC: E21B19/00

Abstract:
A method approximates and connects an off shore riser duct to a floating unit, includes installing a tubular coupling recipient on the floating unit at a riser coupling level, the coupling recipient having an annular side wall extending around a longitudinal axis. A pulling device is on the floating unit at a pulling device level above the riser coupling level. The pulling device pulls a line extended through the coupling recipient and connected to a pulling head at a riser duct upper end. The riser duct upper end is pulled into the coupling recipient, providing a locking mechanism to lock a coupling adapter against downward withdrawal. Extending the line along a curved deviating surface deviates the pulling direction. The curved deviating surface is formed by a deviating member connected to the coupling recipient at a distance from the longitudinal axis smaller than an annular side wall to longitudinal axis distance.
Public/Granted literature
- US20220316285A1 OFF SHORE RISER FIXATION SYSTEM AND METHOD Public/Granted day:2022-10-06
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