Invention Grant
- Patent Title: Unbonded flexible pipe and an offshore system comprising an unbonded flexible pipe
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Application No.: US14908255Application Date: 2014-04-23
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Publication No.: US09989183B2Publication Date: 2018-06-05
- Inventor: Kristian Glejbøl
- Applicant: National Oilwell Varco Denmark I/S
- Applicant Address: DK Brondby
- Assignee: NATIONAL OILWELL VARCO DENMARK I/S
- Current Assignee: NATIONAL OILWELL VARCO DENMARK I/S
- Current Assignee Address: DK Brondby
- Agency: Pearne & Gordon LLP
- Priority: DK201370431 20130802
- International Application: PCT/DK2014/050109 WO 20140423
- International Announcement: WO2015/014365 WO 20150205
- Main IPC: F16L11/00
- IPC: F16L11/00 ; F16L53/00 ; F16L11/127 ; F16L25/01 ; F16L33/01 ; F16L11/08

Abstract:
An unbonded flexible pipe for offshore transportation of fluids from a subsea facility. The unbonded flexible pipe has a length along a longitudinal center axis, and a first and a second end, and a first end fitting connected to the first end. The unbonded flexible pipe comprises from inside and out an electrically conductive carcass, an electrically insulating innermost sealing sheath, at least one electrically conductive armor layer comprising at least one helically wound electrically conductive wire and an electrically insulating outer sealing sheath. At least the electrically conductive layers are mechanically terminated in the first end fitting and the pipe comprises electrical connections arranged to apply a voltage over the electrically conductive layers which electrically conductive layers are electrically connected at a distance along the length of the unbonded flexible pipe from the first end fitting of the unbonded flexible pipe to provide an electric circuit.
Public/Granted literature
- US20160178106A1 AN UNBONDED FLEXIBLE PIPE AND AN OFFSHORE SYSTEM COMPRISING AN UNBONDED FLEXIBLE PIPE Public/Granted day:2016-06-23
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