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Rotork actuators used in oil field development project offshore Malaysia

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Rotork’s hydraulic actuators have been selected for use in the redevelopment of the Bokor oil field, offshore Sarawak, Malaysia.

The company, MIR Valve, ordered 12 RH rack and pinion actuators to control subsea ball valves on a jacket flooding system, as part of the Petronas Carigali Sdn Bhd Bokor Phase 3 redevelopment project, which aims to boost production rates.

Jacket flooding systems are used to coordinate the opening and closing of flooding and venting ballast chambers, using seawater to support and stabilise large offshore structures.

The Bokor field project involves the installation of three wellhead platforms; Rotork’s actuators will be installed 70m below the surface, where they will be used for on/off duty. The actuators will open the valves once within 48 hours of the jacket being submerged and provide a fail-safe return to the closed position if there is a hydraulic supply failure.

The actuators were chosen for the project as hydraulic power supply is the preferred method for subsea actuation. The local service and technical support offered by Rotork Site Services also played a part in securing the deal.

Rotorks’ RH actuators can operate in temperatures ranging from -30°C to 100°C as a standard, with high, low and extreme low variants also available.