Subsea IMR Consulting – North West Shelf, Australia

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Client: Confidential

Asset: Laminaria-Corallina Subsea Field

Location: Timor Sea

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subsea study 3

Challenge

The Laminaria-Corallina offshore field is located in the Timor Sea northwest of Darwin. The field has been in production since 1999-2019. The FPSO is permanently moored in 400m of water between Laminaria and Corallina oil field.

The Laminaria-Corallina field consists of:

  • Nine development wells and associated production/control spools and jumpers
  • Subsea infrastructure consisting of flexible flowlines and umbilicals from FPSO to three manifolds
  • Risers and dynamic umbilicals with buoyancy modules installed on mid water arch
  • Permanently moored BMIT FPSO

 

Scope

Nobleseas Engineering executed following project management and consulting scope:

  • Final Investment Decision preparation for a new subsea tie back and existing damaged line reinstatement
  • Technical assessment of FPSO drydock – Mooring and Risers disconnect/reconnect followed by development of EPCI cost estimates for management approval during production phase
  • Lead subsea RBI and Life Extension study work for the subsea field
  • Framing of ROV IMR survey and CP inspection campaign for complete subsea field
  • Liaised with regulator on the subject of Life Extension and Safety Case revision for future operations
  • Developed subsea and mooring integrity status including risk assessment workshop

 

 

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