National Oilwell Varco Denmark I/s

National Oilwell Vareo Denmark I/s

Michael Hjorth

Kristian Glejbol

Kristian Glejbøl

Nicky Weppenaar

Christian Ditlev Cappeln

Bo Asp Moller Andersen

Bo Asp Møller Andersen

Bo Asp Andersen

An unbonded flexible pipe with a length and bore and an offshore installation are disclosed. The pipe comprises an internal pressure sheath, at least one metallic armouring layer surrounding the internal pressure sheath and at least one additional layer surrounding the metallic armouring layer. The metallic armouring layer comprises helically wound armouring elements which are at least partly covered by a viscous fluid having a kinematic viscosity of at least about 1000 cSt (ASTM D445 or ASTM D2170). The at least one additional layer surrounding the metallic armouring layer provides a gas escape route radially outwards from the metallic armouring layer beyond an outermost layer of the least one additional layer or to a lengthwise gas escape path in or between the at least one additional layer.

Unbonded flexible pipe

The present invention relates to a method and a system comprising a floating unit for processing, handling or storing a fluid and at least one unbonded flexible pipe for transporting said fluid to the floating unit. The unbonded flexible pipe comprises an electric heating system, and the temperature of the fluid in the unbonded flexible pipe is measured and the measured temperature is used to control the electrical input to the electric heating system in the unbonded flexible pipe.

Method and a system for controlling the temperature of a fluid in an unbonded flexible pipe

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Roskilde, Denmark

Michael Hjorth