Patent ID: 7114885
Filing Date: 2006-10-03
Classification: B63B,E21B

Abstract:
1. Flexible riser for transfer of hydrocarbons between a sea bed installation and a vessel ( 10 ) floating at sea surface, the flexible riser ( 18 ) being intended to be submerged to position below the sea level when the riser ( 18 ) is disconnected from the vessel ( 10 ) comprising the riser ( 18 ) is provided with means ( 20 ) for protecting the riser ( 18 ) from impacts and wear, caused e.g. by drifting ice, the protection means ( 20 ) covering at least the part of the riser ( 18 ) being exposed to wave and being formed of a plurality of separate elements ( 23 ), the flexible riser ( 18 ) being retractable to an in-active, retracted position below the sea level when the riser ( 18 ) is not in operation.