SeaQuester Offshore CCS System



DORIS delivered conceptual process design for the carrier vessel in this offshore CCS system.

Project outline

SeaQuester has defined a new system for the disposal of carbon dioxide in offshore reservoirs. The Carbon Capture and Storage (CCS) system allows for the loading, conditioning and compressing of gaseous carbon dioxide (CO2) into high pressure storage facilities onboard a bespoke carrier vessel. The vessel sails to location, hooks up to a modified subsea Christmas tree called the Pivotree™, that provides the station keeping (mooring) and riser, and injects the carbon dioxide into the reservoir.

Services delivered by DORIS

DORIS provided a conceptual process design for the vessel topsides including:

  • Identification of unit operations.
  • Process Simulation.
  • Definition of boundary conditions.
  • Estimation of key utility requirements.
  • Process flow diagrams.

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