Dow, Veolia to deliver ultrafiltration for Total’s Moho Nord FPU
EDINA, Minnesota -- Dow Water & Process Solutions’ ultrafiltration (UF) membrane technology will soon start treating seawater off the coast of the Republic of the Congo required for reservoir injection. The UF seawater treatment installation on the new Moho Nord FPU, commissioned by Total, will treat 210,000 barrels of seawater per day. High-quality water will be produced on the FPU through a compact multi-element UF system designed and supplied by Veolia Water Technologies, utilizing DOW IntegraFlo UF elements.
“Dow and Veolia have been at the forefront of the introduction of membrane technologies in the oil and gas industry,” said Kevin Reyntjens, Marketing Manager, Dow Water & Process Solutions. “We look forward to continuing our collaboration to provide advanced technologies to the industry, improving the efficiency of global oil production.”
Dow technnology will be used as a pretreatment in the Moho Nord FPU water injection system, enabling effective removal of suspended solids and bacteria from seawater. Following pre-treatment by the UF system, the seawater will be fed to the FPU’s Sulphate Removal Unit (SRU), equipped with DOW FILMTEC SR90 elements, prior to injection into the reservoir. The SRU removes the sulphate from the seawater, which prevents reservoir scaling and souring. The water is then injected into the oil bearing reservoir for waterflooding and pressure maintenance.
Oil recovery operations require high-quality injection water in order to maximize reservoir performance. UF membrane technology is increasely being adopted in the industry as an effective method for the treatment of injection water on offshore oil and gas production facilities due to space and weight advantages, when compared to more conventional seawater pre-treatment options. High-quality treated seawater, delivered through UF membrane pre-treatment, also serves as an exceptional pre-treatment solution for the downstream SRU, by reducing the rate of fouling of the sulphate removal membrane, thus reducing cleaning cycles and increasing overall plant availability.