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Compression Platform Tie-In Feasibility Study

Compression Platform Tie-In Feasibility Study

Benefits
The feasibility study provided the Client with:
• Confidence on the availability and limitations of isolation technologies to facilitate the tie-in operations • Conceptual design options and cost estimates for the options to facilitate the investment decision making process • Knowledge on installation methods for the various design options.
Background
The current development is a subsea tieback to an onshore gas plant. The Client was pursuing an option to retrofit a mid-line tie-in point that will enable connection to a fixed compression platform in 100 m to 150 m water depth. The technical challenges to be addressed were in relation to the large diameter pipe and requirement for remote operations.
Work Performed by Atteris

The scope performed included:

  • Identification and assessment of isolation technologies
  • Identification and assessment of offtake tie-in architectures and installation methods
  • Cost estimates for selected concepts

Feasibility was assessed for a retro-fit tie-in of a compression platform to an existing large bore gas pipeline with no pre‑installed tie‑in locations.

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