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MOPU Topsides — TEG Gas Dehydration Package

Conceptual EngineeringProcess SimulationCost Estimation

Project Overview

Conceptual engineering and cost estimation for a triethylene glycol gas dehydration package on MOPU topsides, sized for 45 MMscfd at 70 bara inlet and a -10°C pipeline water dewpoint specification.

Technical Scope

Capacity
45 MMscfd
Inlet pressure
70 bara
Water dewpoint
-10°C
Solvent
TEG (99 wt%)
Cost class
Class 4
Client
Confidential

Engineering Approach

A validated process simulation model determined glycol circulation rate, contactor diameter and number of equilibrium stages, and regenerator thermal duty and reboiler sizing — establishing the complete process basis for handover to the detailed design contractor.

Equipment datasheets covered the contactor vessel, regenerator with reflux condenser, glycol-glycol heat exchanger, glycol filter, flash drum, and circulation pumps — together with a hydraulic basis for the package pipework and instrumentation.

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Project Outcomes

  • Glycol circulation, contactor, and regenerator basis taken by the client without comment
  • Class 4 estimate landed inside the band needed to sanction the dehydration package
  • Process basis handed straight to a detailed design contractor enquiry

Services Delivered

Conceptual EngineeringProcess SimulationCost Estimation