Case Study

West Africa Installation Support

Project description

Infrastructure is in water depths ranging from 1280m to 1650m. To sustain the production plateau, a project was planned to drill and tie in new wells. This required expansion of the existing subsea facilities to accommodate 4 new production wells and 1 water injection well.

A major oil service company was awarded the Transport and Installation contract on behalf of the operator for the subsea flexible flowlines & jumpers, control umbilicals, flying leads and temporary parking structures associated with the development.

Our Scope

PDi were engaged to provide engineering support for both onshore and offshore operations consisting of:

  • In-country engineering support
  • Development of installation procedures and technical reports
  • Flexible flowline & umbilical installation analysis
  • Structure deployment analysis
  • Structural engineering support;
    • Design of all seafastening arrangements
    • Design of installation aids and rigging
    • Design of hang-off platform
    • Underdeck strength assessment
  • Coordination of the fabrication of installation aids
  • Coordination of project briefings and reviews meetings
  • HIRA preparation & attendance
  • HSEQ support
  • Procurement support
  • Pre-commissioning support
  • Client Provided Items loadout & transportation support
  • Vessel mobilisation support
  • Offshore installation campaign engineering support
  • As-built documentation support
Timing and Duration

Commenced October 2015 (Duration 7 months)

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