MAN Energy Solutions has been awarded a contract to support the FEED study of a subsea compression solution for the Chevron-operated Jansz-Io Field in Western Australia on July 17.
Jansz-Io will be the first gas field outside Norway where the subsea compression technology comes to use. It is located around 200 km (124 miles) off the Australian north-west coast at a water depth of approximately 1,350 m (4,429 ft). Jansz-Io is part of the Gorgon project–one of the world’s largest natural gas developments.
MAN Energy Solutions’ scope of work within the FEED covers the technology of the subsea compressors, which will be used to maintain output as reservoir pressure drops over time. Subsea compression solutions boost the recovery of the gas more cost-effectively and with a smaller environmental footprint than conventional compressor systems that are typically installed on platforms above sea level.
MAN’s subsea compression solution has already proven its reliability and benefits for Equinor’s Åsgard gas field in Norway, where the subsea compressors reached 50,000 hours of operation with practically no stops or interruptions in December 2018.
Compressors manufactured by MAN Energy Solutions serve a wide range of industrial applications and are worldwide renowned for their quality as well as their high efficiency.
Oil-free process gas screw compressors
MAN Energy Solutions’ capabilities in the field of oil-free screw compressors are unique: Over 60 years of experience, more than 2,000 compressor units in the field, proven trouble-free availability of more than 100,000 continuous operating hours underline the exceptional quality of MAN Energy Solutions oil-free screw compressors.
Designed for suction volume flows from 200 up to 100,000 m³/h, suction pressures down to 0,1 bar and discharge pressures reaching above 50 bar, the robust process-gas screw compressors offered by MAN Energy Solutions can handle highly contaminated gases and gas mixtures that would normally shorten the availability and life time of other types of compressors. Wide fluctuations in gas composition and associated molecular weight do not influence a screw compressor’s mechanical behaviour. Relatively low tip speeds allow both the compression of dust laden gases as well as the injection of liquids into the compression chamber for cooling and washing.
MAN Energy Solutions can offer a wide range of shaft seal arrangements to adapt the process gas screw compressors to any application. The modular design of the compressor package allows for perfect adaption to any customer specification or space restrictions.
Features & Benefits
- High robustness and availability
- Excellent part load performance
- Suitable for liquid injection
- No lubricant contact with process gas
Typical Performance Data
- Suction flow rates up to 100,000 m³/h
- Discharge pressures up to 50 bar
High-Speed Oil Free Compressors (HOFIM™)
HOFIM™ stands for High-Speed Oil-Free Integrated Motor-Compressor.
By eliminating components such as dry gas seals, lube oil system and gearbox, the HOFIM™ compressor package features the use of high speed induction motor and active magnetic bearings (MECOS). The motor is cooled by process gas and directly coupled to the barrel type compressor.
In addition to gas storage and pipeline usage, the totally sealed and oil-free HOFIM™ is also designated for dirty and/or sour untreated wellhead gas and can be used in other applications such as LNG, hydrogen and CO2 just to name a few.
Typical performance data
- Compression power up to 18,000 kW (24,000 HP)
- Discharge pressure up to 303 bar (4,395 psi)
Benefits
- Emission-free, environmentally friendly system
- Small footprint and low weight
- Extended operating range due to enhanced rotor dynamic behavior and the possibility for parallel/series operations
- Ideally suitable for remote control and unmanned operation
- Minimum service and maintenance requirements (fewer moving parts)
Integrally Geared Compressors
The integrally geared compressor is a multi-shaft centrifugal compressor. The number of stages is determined by the process requirements and the relationship between costs and efficiency. Typical benefits of the various types of integrally geared compressors are high efficiency, low operating costs, a low investment outlay and an excellent operating range. Specific applications include industrial gases, oil & gas, CO2, urea, purified terephthalic acid or nitric acid processes. Additional applications are fuel gas boosters for large scale gas turbines.
Features & benefits
- Individually selectable impeller speed for optimum flow and costs
- Modular component packages for short delivery periods
- Modular sealing systems
- Maximum driver flexibility
- Intercooling opportunities
Typical performance data
- Suction flow rates up to 600,000 m³/h
- discharge pressure 250 bar
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