Schlumberger to supply offshore Angola real-time tension monitoring system

Heerema Marine Contractors has awarded Schlumberger a contract to supply a real-time riser tension monitoring system for nine single leg hybrid risers (SLHR), offshore Angola.

Offshore staff

PARIS -- Heerema Marine Contractors has awarded Schlumberger a contract to supply a real-time riser tension monitoring system for nine single leg hybrid risers (SLHR), offshore Angola.

The nine SLHR are connected to the FPSO turret mooring by flexible jumpers. The SLHRs are free standing and maintain tension by a buoyancy tank. As part of the project, Schlumberger will install its subC-collar tension and curvature monitoring system located on each riser immediately below the buoyancy tank.

The subC-collar units are powered by local ROV replaceable batteries, which include an acoustic telemetry module to transmit the riser tension data to two receiving units on the FPSO. According to Schlumberger, this capability helps to avoid shadowing effects from the risers and flexible jumpers.

11/23/2009

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