Seaway Offshore Cables
Completion of Subsea Umbilical Installation
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FOS completes G1 & GS15 subsea umbilical installation

08-03-2006 Five Oceans Services has successfully completed the subsea umbilical installation of the G1 & GS15 Fields Development Project. The 25.8 km long subsea electro-hydraulic umbilical with an outer diameter of 120mm and a weight in air of approx. 30 kg/m was installed in surface lay mode with continuous touch-down monitoring.

The specialties of this installation involved:

  • Deployment of a Main Umbilical Termination Assembly at approx. 210 m water depth
  • Additional float-out and shore pull of 3.2 km of terrestrial umbilical.
  • The installation was undertaken as subcontractor to Clough Engineering Ltd. As main contractor of Oil and Natural Gas Corporation Ltd. for the G1-GS15 deepwater development including the design, procurement and installation of a new onshore gas plant, an additional shallow water wellhead platform, and a five well subsea development involving trunk lines and control system tied back to new and existing facilities.
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Lars Muck
Commercial Director