Transocean – Sedco 709

Semi-Submersible Rig

Man hours: 148000

June 2007 – 11 weeks.

  • Rig was raised out of the water onto a heavy lift vessel, in Saldanha Bay, enabling access to pontoons steelwork and thrusters.
  • Over 390m of 3” #160 SS (HP) pipe renewals.
  • 100m of 5” cement lines.
  • Renewal of all the HP Demco valves.
  • Steelwork modifications and overhaul of the main fairleaders.
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  • Transocean – Sedco 709