VWS Westgarth Office Contact

Orbital House
3 Redwood Crescent
East Kilbride
G74 5PR

+44 (0)1355 588 000
Fax: +44 (0)1355 588 001


Veolia Water Oil & Gas Angola Contact:

Centro Logistico de Talatona
Via C3A Sector de Talatona
Gleba GU - No. 4278 
Andar - RC - No./Letra
Belas - Luanda
República de Angola

Tel: +244 222 711 799


VWS STREAMLINER™ Deoiling Hydrocyclones

The purpose of the VWS STREAMLINER™ de-oiling hydrocyclone is to separate free oil from produced water prior to discharge or injection.

Usually situated after the primary separators, de-oiling hydrocyclones are normally regarded as the first stage in the treatment process. Long established as a process step, proven in service and having a compact footprint, they are one of the most commonly employed processes in a produced water treatment system. Energy to drive the process comes from the pressure in the separators.

How It Works

Produced water is injected under pressure into the larger diameter conical end of the hydrocyclone liner. The inlets are generally tangential to the wall of the liner so that the fluid entering the liner is made to rotate. Different inlet designs exist (depending on supplier) to induce this rotational vortex in the fluid. The conical shape of the hydrocyclone liner causes an increase in rotation speed as the diameter narrows, resulting in the development of high centrifugal forces and therefore the separation of the lighter oil from the heavier water and solids. For more information on this process, see our STREAMLINER™ brochure.


Watch our animation to learn more about how the STREAMLINER™ deoiling hydrocyclone works.


The design of the new STREAMLINER™ range of de-oiling hydrocyclonesof incorporates unique features for improved reliability, performance and efficiency together with simplified operation and maintenance. Available as retrofits for existing installations or integrated into a complete produced water system, the STREAMLINER™ offers an unbeatable combination of performance, economy and whole life support from the water treatment expert in upstream oil & gas.

Hydrocyclone tube

Benefits of the STREAMLINER™ design:

  • Annular axial inlets reduce turbulence
  • Multiple inlets improve wear resistance
  • Swirl inducer can be inspected without liner disassembly
  • Retractable swirl inducer allows for internal liner inspection and easier jet cleaning
  • Liners can be retrofitted into existing installations
  • Geometry optimised for capacity and efficiency

In-house expertise

VWS Westgarth specialise in the design & build of water treatment process plant, in the worldwide oil & gas industry, therefore non-standard equipment and specifications can be easily incorporated into full treatment packages. This ensures our clients' requirements are met in the most efficient manner with either a standard plant or bespoke design.

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