Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for suction anchor and mooring deployment and connection










Image Number 10 for United States Patent #6457908.

A method and apparatus for deployment of mooring systems for buoyant marine structure 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 stern 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.








 
 
  Recently Added Patents
Pattern transfer apparatus and method for fabricating semiconductor device
Discharge circuit and method
Query optimization with awareness of limited resource usage
Switching element for a valve train of an internal combustion engine
Clostridium chauvoei polypeptide, DNA encoding the polypeptide and a vaccine comprising the polypeptide
Method and system for providing geohazard information to customers
Encoding digital content based on models for predicting similarity between exemplars
  Randomly Featured Patents
Brew through lid, assembly of a thermal carafe and a brew through lid as well as a coffee maker including such an assembly
Print control of a print job to be printed to a plurality of printers
Downspout claw
Temperature control method of epitaxial growth apparatus
Programmed oleo-pneumatic shock absorber
Apparatus and method for measuring vision defects of a human eye
Process for spinning composite fiber of phenolic resin
Display systems and releasable power clamp for use therewith
Bath and process for plating tin/lead alloys on composite substrates
Adjustable handle assembly