Sembawang Shipyard Completes Major FPSO Conversion

abarrelfullabarrelfull wrote on 24 Jul 2012 05:29
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Monday 13 January 1997

Sembawang Shipyard (SembShip), a member of the Marine and Heavy Industries Group of Sembawang Corporation Limited, has successfully completed the fast track tanker conversion of Tantawan Explorer into a Floating Production Storage Offloading vessel for Single Buoy Moorings Inc (SBM) of Monaco.

Formerly known as Bayern, the 136,960 dwt tanker was converted within 9 months. This FPSO is the most advanced and complicated conversion that SBM, one of the leading engineering, turnkey contractors and operators of floating production systems, has undertaken. The vessel will be used to process mostly gas besides crude oil thereby making it a more sophisticated and specialised vessel. Major conversion work included the installation of a IMODCO-designed Single Point Mooring Turret (SPT) system which will enable the vessel to weathervane freely to take up the position of least resistance to the prevailing winds. Both the Upper and Lower Collars and Columns were installed for turret integration. The process modules and facilities were installed on the process decks and these require sophisticated computer-aided planning to facilitate project control and management at various stages of the project.

SembShip also carried out substantial steelwork in the installation of the helideck, process deck support structures, equipment supports and the tandem offloading station totalling more than 2,200 tons. More than 30 km of pipes were installed to cater for the additional equipment from the process decks to the cargo loading and offloading system. Major upgrading and modification were also carried out to the utilities systems, main boiler, accommodation areas and the galley.

Mr. Chris Davison, Project Manager of SBM System, said, “This is the third time that we have
worked with Sembawang Shipyard, including the conversion of FSO XV ex Nielstor in 1992 and
the shipyard has once again proven itself as one of the best shiprepair yards in the world capable of handling complicated FPSO conversion work. It is a difficult contract requiring both the yard’s and owners’ project management teams to work closely and I am indeed pleased to see such fine efforts to accomplish major goals of quality in standard and performance.” In reply, Mr. Heng Chiang Gnee, Managing Director of Sembawang Shipyard at the redelivery ceremony said “We are proud to have successfully completed another complex FPSO conversion project which will further boost our track record in the offshore market. We would like to thank SBM for their strong support and look forward to co-operating with SBM on future projects of such magnitude.”

Completed to international safety standards, the vessel will be stationed at the Tantawan Gas and Oil Field, located in 240 ft deep water and approximately 265 miles south of Bangkok, Thailand. Block B8/32 is owned by subsidiaries of Pogo Producing Company and RutherfordMoran Oil Corporation, independent US oil and gas companies, and Palang Sophon Limited, a Thai company affiliated with the Sophonpanich Group

SembShip has in hand two other FPSO upgrading projects. FPSO II owned and operated by
SBM, Monaco is currently undergoing major upgrading work involving massive steelwork renewal
of more than 800 tons to be carried out in the bottom, topside process skid structure and the
various wings. SembShip will also upgrade topside process facilities, modify the mooring buoy
systems and install all heating coils. In addition, a total area of more than 30,000 sqm of cargo tanks is to be blasted and coated. Upon completion, the vessel will be stationed in the Marlim Field, located off Brazil.

A third FPSO project currently being undertaken in SembShip is the refurbishment and life extension of Jabiru Venture for another 5 years. Owned by BHP Petroleum Pty Ltd of Australia, this 143,814 dwt FPSO is undergoing substantial upgrading of its entire hull structure totalling more than 25,000 sqm and internal tank coating of more than 37,000 sqm. Other major work included steel renewal of more than 700 tons, upgrading of accommodation areas, renewal of various deck piping systems, as well as electrical work. The project is targeted for completion in mid January 1997 and will resume production on site at the Jabiru oil field, Australia.

The increasing development of oil fields in areas of the world with limited pipeline infrastructure
has greatly boosted the market potential of conversions to FPSO/FSO. With its extensive
experience and track record accumulated over the years, SembShip has reinforced its reputation as the leading shipyard in shiprepair and conversion and is well positioned to play a leading role in the growing offshore conversion market.


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