Floating production systems

ExxonMobil's One Guyana FPSO Arrives in Singapore for Integration

The largest project to date will add a capacity of 250,000 B/D starting in 2025.


The FPSO One Guyana has left drydock and is now quayside at the Seatrium yard in Singapore to begin topside integration work.

The vessel, built by SBM Offshore for ExxonMobil, will be the fourth unit to be deployed at the Yellowtail development project in the Stabroek block, about 200 km offshore of Guyana.

The FPSO is designed to produce 250,000 B/D of oil, an associated gas treatment capacity of 450 MMcf/D, and a water injection capacity of 300,000 B/D.

It will be spread-moored in a water depth of about 1800 m and can store around 2 million bbl of crude oil produced from the Yellowtail development once it enters operation in 2025.

The FPSO One Guyana will be the largest producing unit ever built by SBM. The vessel’s design is based on SBM’s Fast4Ward concept that utilizes a newbuild, multipurpose hull with several standardized topside modules.

According to SBM, the project team is preparing to install and integrate three topside modules completed at SBM’s joint-venture partner yard QMW in China. Upon arrival of the project team in Singapore, work will begin integrating the modules at quayside.

The Yellowtail development project plans to drill between 45 and 67 development wells, according to the project’s environmental impact assessment. Additionally, the project includes 51 enhanced vertical deepwater trees and associated tooling, as well as 12 manifolds and associated controls and tie-in equipment.

When it announced its final investment decision for the project in April 2022, ExxonMobil said the FPSO will develop an estimated resource of more than 900 million bbl of oil. According to the announcement, the $10-billion project will include six drill centers and up to 26 production and 25 injection wells.

ExxonMobil Guyana Ltd., an affiliate of ExxonMobil Corp., is the operator and holds a 45% interest in the Stabroek block, with Hess Guyana Exploration Ltd. holding a 30% interest and CNOOC Petroleum Guyana Ltd. holding 25%.