Method and apparatus for suction anchor and mooring deployment and connection
OwnerBilly J. Bergeroninventor
Life of this patent
Estimating the term…
Loading patent…
OwnerBilly J. Bergeroninventor
Estimating the term…
A method and apparatus for deployment of mooring systems for buoyant marine structures such as mobile offshore drilling units (MODU's) and for connecting the same to the mooring lines thereof. An anchor handling vessel carries one or more anchors each having a deployment connection and a mooring connection and individually moves each anchor over its stem roller and deploys it to the sea bottom for installation. A handling line is disconnected by ROV from the deployment connection and is moved from the deployment connection to the mooring connection so as to become the main mooring line. Syntactic buoys are then mounted on the main mooring line for elevating it above the sea bottom for recovery. When MODU stationing is desired the anchor handling vessel then recovers the surface buoy and connects to the rig mooring line using a short section of mooring chain. A J-chaser stopper device is then installed in the mooring string and is connected to the mooring line of the MODU by a short section of chain. The J-chaser lowers the mooring string, completing the mooring connection between the anchor and the MODU. A plurality of mooring strings, typically eight, are deployed in this manner to properly station the MODU. Disconnection of the MODU is accomplished essentially by the reverse of the above deployment procedure.
A method for deployment of a mooring system having one or more mooring anchors and mooring lines for a buoyant marine structure, comprising the steps of:
A method for deployment of a mooring system having mooring anchors and mooring lines for a buoyant marine structure and for connecting the mooring lines of the mooring system to the mooring anchors and the buoyant marine structure, comprising the steps of:
A method for deployment of a mooring system having mooring anchors and mooring lines for a buoyant marine structure, and for connecting the mooring lines of the mooring systen to the mooring anchors and the buoyant marine structure, comprising the steps of:
Dependencies are inferred from the claim text.