AN OFFSHORE SYSTEM

摘要

An offshore system for transferring fluid at least partly below sea surface e.g. for transferring oil from a well (9) to a sea surface installation (4). The offshore system comprises a flexible transporting unit (3), such as a pipe and a first movable structure fix-point (4a) with a nominal position and a second structure fix-point (5a) arranged at a distance to seabed and at a lower position relative to the sea surface than the first structure fix-point (4a). The flexible transporting unit is fixed to respectively the first structure fix-point (4a) and the second structure fix-point (5a) to provide a catenary liftable length section of the flexible transporting unit extending between the first structure fix-point (4a) and the second structure fix-point (5a), wherein the catenary liftable length section has a touch down point at seabed at nominal position, and if the first structure fix-point (4a) is moved out of its nominal position, the distance to the second structure fix-point (5a) can be increased sufficiently to lift the catenary liftable length section from the seabed to form a catenary.