Veolia Water Technologies, through its subsidiary VWS Westgarth Ltd, has been awarded a multi-million-dollar contract by SBM Offshore for the supply of a seawater treatment package for the Liza Unity FPSO, located in the Stabroek block offshore Guyana.
The award is for the design and procurement of equipment with construction technical assistance for a seawater treatment plant sized for 263,244 BPD (41,856 m3/day) of low sulphate water and 31,700 BPD (5,040 m3/day) of reverse osmosis process water for the Liza Unity Floating Production Storage and Offloading (FPSO) unit, which will operate in the Liza Field, offshore Guyana.
The seawater system, provided as two fully-integrated process modules, incorporates the sulphate reduction (SR) nano-filtration membrane process to selectively remove barium and strontium from the injected seawater, preventing the formation of barium or strontium scale in the reservoir or production pipe internals. The SR process leaves the other salts (sodium, chloride, etc.) substantially unaffected, maintaining the stability and permeability of the oil reservoir formation clays.
This is the twelfth contract awarded from SBM Offshore to Veolia and can be attributed to the successes of previous projects executed for the company. Liza Unity FPSO will be the largest capacity FPSO that SBM Offshore has designed. The FPSO will be spread moored in a water depth of 1,633 metres and will be able to store around two million barrels of crude oil.
“Liza Unity is a strategic project for SBM Offshore and VWS Westgarth’s knowledge and experience on water treatment systems will be of key importance for the success of the development,” said Luis Ferreira, package manager, SBM Offshore. “The exceptional collaboration and teamwork already put in place by both companies have formed a solid base for a safe and quality-driven delivery of the project scope.”
Daniel Vallance, manager of projects at VWS Westgarth Ltd, added, “Liza Unity is a significant project for Veolia as this is the first of SBM Offshore’s Fast4Ward® projects. Fast4Ward aims to standardize FPSOs as far as possible and by securing this contract, we now have the opportunity to deliver a seawater treatment package that exceeds SBM Offshore’s expectations on this project and support a positive future for both parties.”