Invention Grant
- Patent Title: Transportation and installation of elongate subsea elements
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Application No.: US15122920Application Date: 2015-03-09
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Publication No.: US09909690B2Publication Date: 2018-03-06
- Inventor: Francisco Javier Tinoco , Kee Chien Ting
- Applicant: Subsea 7 Limited
- Applicant Address: GB Sutton
- Assignee: Subsea 7 Limited
- Current Assignee: Subsea 7 Limited
- Current Assignee Address: GB Sutton
- Agency: Levy & Grandinetti
- Priority: GB1404092.7 20140307
- International Application: PCT/GB2015/050679 WO 20150309
- International Announcement: WO2015/132613 WO 20150911
- Main IPC: F16L1/20
- IPC: F16L1/20 ; F16L1/235 ; F16L1/26 ; B63B35/03 ; F16L9/22 ; F17D5/00

Abstract:
A method of handling a discrete elongate subsea element of determinate length, such as a spool of rigid pipe is disclosed. The method includes shortening a tensile chord system acting on longitudinally-spaced locations on the element to apply longitudinally-compressive forces to the element. The compressive forces bend the element along its length against elastic recovery force to shorten the span of the element. One end of the element is anchored at a first anchorage before or after the element is bent. The other end of the element is anchored at a second anchorage, after the element is bent and while the element remains bent. The method is apt to be used during installation of the element, where the anchorages are both underwater, and during transportation of the element, where the anchorages are hang-off platforms of a surface vessel.
Public/Granted literature
- US20170074424A1 Transportation and Installation of Elongate Subsea Elements Public/Granted day:2017-03-16
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