SJS submersible pump

Power up: submersible motor pumps

The SJS submersible pumps utilize a submersible motor to drive the Sulzer vertical pump stages. The normal vertical turbine lineshaft and bearings are thus eliminated and power levels to 2 MW (2,700 hp).

Main benefits
  • No lineshaft: lineshaft couplings or lineshaft bearings to maintain
  • No external cable splices: Power cable connections only in motor and terminal box
  • Low, medium and high voltage submersible motors available to 2 MW (2,700 hp)
  • Water/glycol filled environmentally friendly motor for improved efficiency
  • Variety of materials available from cast iron to super duplex stainless steellity
Main applications
  • Offshore Seawater Lift
  • Offshore Diesel Genset Firewater
  • Offshore Ballast Water
  • Onshore Municipal Pressure Boosting
  • Onshore Mine Dewatering
Main design features
  • Standard design with submersible motor below the bowl assembly for low cost
  • Inverted design with motor above bowl assembly for low NPSHr and low submergence
  • Bidirectional thrust bearing in submersible motor
  • Positive pressure in submersible motor for contamination prevention
Key characteristics
Capacities Up to 10,000 m3/h / 44,000 US gpm
Heads Up to 230m / 750 ft
Pressures Up to 40 bar / 600 psi
Temperatures Up to 80°C / 180°F
Discharge sizes Up to 915mm / 36 inches
Maximum speed of rotation Up to 3,600 rpm for smaller sizes
Performance range
SJS Performance Range 50Hz
Performance range 50 Hz
SJS Performance Range 60Hz
Performance range 60 Hz
Documents
Applications
  • Auxiliary applications
    The complex processes performed on a typical FPSO rely on the performance of dozens of pumps handling a variety of liquids under widely varying process conditions.

  • Crude oil offloading
    Depending on the FPSO design, a booster pump is often required to export crude oil delivered to deck level by the FPSO cargo system.

  • Firewater systems (fire fighting)
    Firewater pumps are the heart of an FPSO’s firefighting system. It is vital that the pumps be reliable in extreme conditions and run for extended periods of time.

  • Flow assurance (dead oil / hot oil)
    Pumps for flow assurance service, also known as dead oil and hot oil circulation, are critical to maintain oil production in deep cold water. Though usually driven by an electric motor, the Sulzer BB3 and BB5 pumps can be engineered with diesel engine drivers. Along with our reputation for quality and efficiency, our pumps are right for this service.

  • Multiphase pumping
    Helico-axial multiphase pumps (MPP) are used to boost unprocessed well streams, enabling liquid / gas mixtures to be transported over long distances without the need for prior phase separation.

  • Seawater lift
    Sulzer builds both lineshaft and submersible motor vertical seawater lift pumps. Sulzer SMHv and SMDv pumps are vertical shaft in BB1 casing.

  • Seawater treatment
    With enhanced oil recovery methods, often prior to injection sea water needs to be treated to remove or reduce salt content. Sulzer’s pumps achieve this by delivering sea water to the SRU / SWRO membrane racks.

  • Water injection pump
    Sulzer offers both topside (Platform or FPSO based) and Sulzer / FMC subsea water injection pumps to boost output from maturing subsea oil fields.
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