Invention Grant
- Patent Title: Method for subsea deployment of discrete lengths of flexible jumper pipes
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Application No.: US15773223Application Date: 2016-11-03
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Publication No.: US10436351B2Publication Date: 2019-10-08
- Inventor: Steinar Hestetun , Alexander Fjeldly
- Applicant: Vetco Gray Scandinavia AS
- Applicant Address: NO Sandvika
- Assignee: Vetco Gray Scandinavia AS
- Current Assignee: Vetco Gray Scandinavia AS
- Current Assignee Address: NO Sandvika
- Agency: GE Global Patent Operation
- Agent Marc A. Vivenzio
- Priority: NO20151541 20151104
- International Application: PCT/EP2016/076537 WO 20161103
- International Announcement: WO2017/076962 WO 20170511
- Main IPC: F16L1/16
- IPC: F16L1/16 ; F16L1/19 ; F16L1/15 ; F16L1/20 ; E21B43/01 ; E21B19/00 ; E21B17/046 ; E21B17/20

Abstract:
A method for deployment of discrete lengths of flexible jumper pipes for installation subsea is provided, comprising coupling the jumper pipes together end-to-end thus forming a flexible train of jumper pipes, and winding the train of jumper pipes on a drum suitable for transport to a deployment site by a pipe-laying vessel. On site, the train of jumper pipes is unreeled from the drum until the first jumper pipe is lowered into the sea, then the drum is halted and the trailing end of the first jumper pipe is detached from the leading end of the second jumper pipe in the train of jumper pipes. The trailing end of the first jumper pipe is shifted to a lowering wire, and the first jumper pipe is lowered to the sea bottom. The process is repeated until the discrete lengths of flexible jumper pipes are individually lowered into the sea.
Public/Granted literature
- US20180320799A1 A METHOD FOR SUBSEA DEPLOYMENT OF DISCRETE LENGTHS OF FLEXIBLE JUMPER PIPES Public/Granted day:2018-11-08
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