2005 Annual Report - SBM Offshore

Report of the Board of Management
The design and supply of the spread mooring system for the
Chevron Agbami FPSO consisting of twelve mooring legs
with suction anchor piles, chain and wire rope is currently
being executed. The scope also includes the structural
design of mooring porches and the design and supply of all
mooring equipment to be incorporated in the FPSO deck
layout. The fabrication of the suction anchor piles will be
performed in Nigeria at the Nigerdock yard. The complete
mooring system will be installed in approximately 1,500
metres of water offshore Nigeria using the new vessel
‘Normand Installer’, to be followed by hook-up of the Agbami
FPSO upon arrival at the offshore site in the course of 2007.
An order was obtained for the design and supply of two
mooring systems for an LPG storage vessel at the Belanak
field operated by ConocoPhillips Indonesia Inc. The project is
executed in two phases, starting with the supply of a CALM
system for the mooring of a chartered LPG tanker to be used
as a temporary storage unit. The anchoring and riser systems
of the CALM buoy will be designed to accommodate, in the
second phase, the external turret system of the dedicated
LPG storage vessel which will be permanently moored for the
life of field.
Deepwater Export Systems
SBM received in the course of the year orders for three
further deepwater export systems for field developments in
West Africa. The export systems, very large CALM buoys, are
installed at a distance of approximately 2,000 metres from
large spread moored FPSOs. They are linked to the
production and storage vessels by means of two or three
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large diameter steel or flexible flowlines, suspended between
the vessel and the buoy. At this distance from the FPSO,
export tankers can moor safely to the buoy and receive their
cargo from the FPSO through the flowline system and the
piping and hose system of the buoy.
The new awards bring the total of orders for such systems to
eight, out of a total of nine awarded thus far by the oil majors.
Two terminals were put into operation in previous years
offshore Angola at Girassol (Total) and Kizomba ‘A’
(ExxonMobil), whilst in 2005 a further two units were
commissioned offshore Nigeria at Bonga (Shell) and again off
Angola, this time at Kizomba ‘B’ (ExxonMobil).
Construction of the buoy for Erha (ExxonMobil), an order
received in 2004, neared completion by the end of 2005 at
the yard of Nigerdock in Lagos and, in the meantime, delivery
has taken place during the first quarter of 2006.
The three orders received in 2005 are for the following
projects, all in water depths in excess of 1,000 metres:
• the BP operated Greater Plutonio field offshore Angola;
• the Chevron operated Agbami field offshore Nigeria;
• the Total operated Akpo field offshore Nigeria.
An important feature of the orders for deepwater export
systems is that a very large part of the construction of the
buoys, as well as the suction piles for the anchoring systems,
is performed at local yards: Sonamet in Angola and
Nigerdock in Nigeria.
A scale model of the deepwater export CALM for the Erha field of ExxonMobil and the installation of the buoy offshore Nigeria