A method of temporarily anchoring a mobile offshore drilling unit 20 at an offshore drilling site 11 comprises: laying out a plurality of sea floor 13 anchoring assemblies 1 a-h having a connection unit (4a, Fig 1), an anchor line (2a, Fig 1) and a sea floor anchor (3a, Fig 1); bringing the drilling unit to the drilling site; moving, by dynamic positioning, the drilling unit to a position substantially vertically above each respective connection unit, lowering and connecting a drilling unit anchor line (22, Fig 14) with the respective anchoring assembly via the connection unit and a connection member (23, Fig 14); and tensioning up each of the drilling unit anchor lines such as to anchor the mobile offshore drilling unit at the offshore drilling site via the plurality of anchoring assemblies. There is also disclosed a connection unit, an anchoring assembly and a set of anchoring equipment.
Offshore anchoring methods and systems
2025-04-02
Patent
Electronic Resource
English
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |