PANGBOURNE, UK -- Framo Engineering has approved Castrol’s Brayco Micronic SBF (Subsea Barrier Fluid) for use in its subsea multiphase booster pumps.
According to Castrol, stricter environmental legislation means that conventional oils are now being phased out for sensitive subsea applications in the Norwegian North Sea.
Oyvind Berg of Castrol Norway said: “Working closely with Framo, Castrol Offshore has developed the only fully OSPAR-compliant oil with electrical insulation and seawater stability. Castrol Brayco Micronic SBF is used to cool the high-speed motor unit (400 kW), and lubricate the mechanical seals of the multiphase booster pumps.”
The electrically operated pumps are on the seabed next to the wells, and pump a mix of crude oil, gas, and water to the surface. The lubricating oil is supplied through a control umbilical from the surface, which also carries the electrical power and communication system.
The first full field trial is under way with Statoil on the Gullfaks B platform in the northern part of the Norwegian North Sea.
Booster pump lubricator testing at Gullfaks B
Framo Engineering has approved Castrol’s Brayco Micronic SBF (Subsea Barrier Fluid) for use in its subsea multiphase booster pumps.