Patent ID: 8342777
Filing Date: 2013-01-01
Classification: B63B

Abstract:
1. An oil production floating support including a disconnectable mooring system of anchor lines anchored to a bottom of a sea and of bottom-to-surface connection pipes, the support comprising: a mooring buoy for said anchor lines and first bottom-to-surface connection pipes extending from said buoy, to which the anchor lines and first bottom-to-surface connection pipes are moored, down to the bottom of the sea; a turret extending in a through cavity passing along an entire height of a hull of the floating support, said mooring buoy being fastened under the hull of the floating support to said turret, said turret co-operating with the hull within said through cavity passing along the entire height of the hull of the floating support, said turret being rotatably mounted relative to said hull by means of at least one rolling or friction bearing situated at at least one of above the water line and out of the water so as to allow said floating support to turn about a substantially vertical axis ZZ′ of said turret and of said cavity without causing said mooring buoy to turn relative to the same vertical axis ZZ′; and said turret including at least one watertight tubular structure having a bottom wall assembled in a watertight manner to a bottom end of a tubular side wall of said tubular structure; and second connection pipes between top ends of said first bottom-to-surface connection pipes and a deck of the floating support, passing in a watertight manner through the bottom of the turret and rising within the cavity to a coupling for coupling a plurality of said second pipes, said coupling being secured to the floating support, said coupling being of the rotary joint coupling type and being rotatably mounted so as to allow said floating support to turn without turning said coupling; the support further comprising: said mooring buoy comprises a top tubular wall having valves situated therein, said tubular top wall of the buoy co-operating with the bottom wall of said turret to define a watertight valve chamber when the top edge of said tubular top wall of the buoy is pressed against the bottom wall of said turret, against the underface thereof; and said floating support includes a connection/disconnection system for connecting/disconnecting said mooring buoy relative to said bottom wall of the turret, said system comprising: