Project Profile
Value: US$1,300 million
Location: OML 104, Offshore Nigeria
Water Depth: 200ft and 300ft
Oil Gas Reserves: 400,000 mmboe
Start-up Year: 2004
The Yoho field lies in Oil Mining Lease (OML) 104, offshore Nigeria. ExxonMobil\'s subsidiary MPN holds a 40% interest in the joint venture and the Federal Government of Nigeria holds the remaining 60% interest through the Nigerian National Petroleum Corporation (NNPC). The completed project incurred a cost of approximately US$1.3bn and recovered an estimated 0.44 billion barrels of oil from the Yoho and Awawa reservoirs. These reservoirs lie in a water depth of between 200ft and 300ft. Yoho serves as a hub for future development of other OML 104 petroleum resources.
Production through the FPSO reached over 90,000 barrels of oil a day. This marked the first deployment using an EPS system in West Africa. The FPSO was operated by Esso Deepwater, an ExxonMobil subsidiary. The full-field development involved 33 wells over wellhead platforms, a central production platform and a living quarters platform as well as an FSO vessel to replace the EPS. Full-field start-up was scheduled for late 2004, but started in January 2006 with around 150,000bopd produced. The produced gas is re-injected to eliminate routine flaring and maximise oil recovery.
ABS was contracted by SBM to provide classification and certification services, including condition assessment of tankers, technical design review, surveys during refurbishment, conversion and hook-up and commissioning of this and two other FPSOs offshore West Africa. The Saipem and Bouygues Offshore subsidiary Saibos was awarded the contract to develop Yoho. The scope of work included: project management, engineering, procurement, construction, transportation and installation, hook-up and commissioning of one production platform, pipeline laying and the other facility installation.
Operators:
Nigerian National Petroleum Corporation: Operator with 60% interest
ExxonMobil Nigeria: 40% interest
Contractors:
ILF Consulting Engineers: Detailed design for increase in oil production
Malaysia Marine & Heavy Engineering (MMHE): Providing FSO
Mustang Engineering: EPC contract for early engineering
Saipem SpA (Nigeria): EPC contract for offshore platforms
SBM (Single Buoy Moorings): Providing Falcon FPSO
Sime SembCorp Engineering: Platform fabrication
Sub contractor:
ABS: Provide classification and certification services for SBM