Patent ID: 6435124
Filing Date: 2002-08-20
Classification: B63B,E21B

Abstract:
A mooring and flowline system comprising:means for mooring at least one of a floating production vessel and storage vessel to the seabed, at least one flowline for connection to at least one producing well or to a facility; the means for mooring a vessel to the seabed comprising at least two anchors in the sea bed, a respective anchor riser extending from each of the anchors, each of the anchor risers having one end secured to its anchor and the other end secured to a common mooring node member, and mooring pendant means extending from the node member, the mooring pendant means having an upper end for connection, in use, to the vessel; each flowline comprising a seabed flowline extending from the direction of the well or facility into the vicinity of the means for mooring a vessel to the seabed, and a flexible riser pipe extending from the seabed flowline towards the water surface; and in which the flexible riser pipe is a continuous conduit with a single axial rotational coupling and has part of its length secured alongside the mooring pendant means so that, in use, the flexible riser pipe is capable of helixing around the mooring pendant means in response to turning of the vessel.