Siemens compression system to re-inject Castberg gas

Siemens will engineer, manufacture, and commission the SGT-750 gas turbine-driven compression train for Statoil’s Johan Castberg FPSO in the Barents Sea.

Siemens SGT-750 gas turbine
Siemens SGT-750 gas turbine

Offshore staff

MUNICH, GermanySiemens will engineer, manufacture, and commission the SGT-750 gas turbine-driven compression train for Statoil’s Johan Castberg FPSO in the Barents Sea.

This will be the first offshore application for the SGT-750: equipment delivery should begin in mid-2019, with first oil from Johan Castberg set for 2022.

Siemens’ package will include a 41-MW SGT-750 gas turbine driving two DATUM compressors operating in a tandem arrangement. The latter will re-inject gas to pressurize the oil reservoir.

In addition, the company will supply a waste heat recovery unit to pick up gas turbine exhaust heat. This will then be distributed as heated liquid to prevent ice build-up on parts of the superstructure.

Siemens claims the SGT-750 is designed for long maintenance intervals and that the system can drive the DATUM compressors without a speed increasing gearbox.

These features help limit carbon dioxide emissions.

02/14/2018

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