Exxon Sculpin Ocean Monarch Deepwater Project
Location: Bass Strait, Australia
Objective: Moor the Ocean Monarch in just 2,280m using its conventional mooring system
Solution: Safely install and recover a mooring solution using a combination of the rig’s onboard chain/wire mooring system, over 1,000 meters of chain extensions (per leg), 2,000 meters of insert wire (per leg), and 110 kips of submersible buoyancy (per leg)
Summary: Delmar Systems, Inc. was awarded the contract to moor the Ocean Monarch safely and efficiently on a chain/wire drag anchor system in deep water
More Detailed Scope of Work:
With hard bottom soil conditions and Exxon’s desire to use the rig system as much as possible, Delmar Systems, Inc. worked with Exxon’s technical group to design a mooring solution that would allow the rig to moor on a drag anchor/chain/wire system in just under 2,280 meters of water. Using detailed load sharing calculations, Delmar provided the needed technical numbers to ensure a safe installation and recovery while sharing the mooring load between the boats and rig. Buoys and insert wire were used to elevate the mooring line catenaries and keep them off of the MODU’s anchor bolsters with such a deepwater catenary mooring solution.