BP Trinidad Campaign on West Jaya TAD
Objective: Design a close proximity mooring system over congested subsea infrastructure.
Solution: Delmar was tasked with designing a preset mooring system in shallow water that would allow minimal offsets while exposed to the harsh environment.
A polyester preset mooring system was designed for the Seadrill West Jaya TAD off the coast of Trinidad. The West Jaya had to be capable of mooring extremely close to BP’s Immortelle Platform. Delmar proposed three mooring positions at increasing distances away from the platform to be specified as operating, stand-by, and survival positions. The static position while operating was only 90ft (27m) to allow the use of a personnel transfer bridge while operating. The design had to allow minimal offsets while exposed to the harsh current environment that pushed the TAD toward the platform. The designed system met all DNV-OS-E301 as well as API-RP-2SK recommended factors of safety. The system proved to perform as expected and allowed successful renovation of the Immortelle Platform.