Hallin Marine Completes Unique FPSO Contract

By George Backwell
Tuesday, August 26, 2014
Diving Support Vessel: Photo Hallin Marine

Hallin Marine, a Superior Energy Services company, says it has completed a unique project for COOEC Subsea Technology, a wholly-own subsidiary of COOEC (China Offshore Oil Engineering Company) which  involved the replacement of 9 mooring lines beneath the floating production storage and offloading (FPSO) vessel HYSY111, while maintaining live operations.

The oil and gas industry has previously witnessed the replacement of a single damaged mooring line replacement under such conditions; however this is the first time all FPSO mooring lines have been replaced as one continuous activity. The entire task was completed ahead of schedule without shutting down production on the facility, and with zero lost-time injury.

“The HYSY111 FPSO mooring replacement project consisted of several phases of work beginning with piles installation then laying and pre-tensioning new lower chain segments by COOEC,” comments Phil Chamberlain, Hallin’s Director – Service Delivery. “Hallin then provided subsea services to cut and remove the old mooring lines, followed by laying and hooking up new upper mooring wires.”

For the final phase, COOEC completed the engineering analysis and developed the main project procedures, providing specialised subsea tools for the subsea mooring line connection, while Hallin provided the DSV Windermere and dive team as well as subsea operational solutions for the mooring line hook-up to successfully execute the project.

Chamberlain added: “Hallin’s involvement commenced at an early phase with an operational and engineering presence on the ground in Shenzhen, China. COOEC and Hallin teams worked together in developing the optimal technical solution while ensuring the critical safety elements of undertaking this work on a live platform were addressed. The project has provided an excellent opportunity to showcase Hallin’s capabilities as an integrated subsea service provider.”
 

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