Serving the Oil & Gas Industry Since 1980

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crude prover free water knockout skid

Free Water Knockout Skids

A Free water knockout skid gives the incoming mixture of oil and free water time to separate. The vessel is designed so that all liquid will move at an even rate through the vessel, and not channel (accelerate).

The water being heavier than the oil will sink to the bottom. The oil will move over a weir to a separate part of the tank. The water is removed from the bottom of the vessel.

 

Free Water Knockout Features

The internal design allows the liquid to flow at an even rate through the vessel and not channel. Free Water Knock Outs are used where the oil and water exist separately are not in an emulsion, and easy to separate.

 

The degree of separation depends on:

 

  • The available retention time.

 

  • The density differential between the two fluids (larger differential means better separation)

 

  • The operating temperature of the flowing fluids.

 

  • The presence or absence of slugging flow.

 

  • Interfacial area available for separation

 

enfab inc logo
crude prover free water knockout skid
enfab inc logo
crude prover free water knockout skid
enfab inc logo
crude prover free water knockout skid

Heater Treaters

Heater treaters can also function as a free water knockout, a heat exchanger, a filter, and as a water wash tank.

 

Horizontal heater treaters are used in the oil/gas industry to help facilitate oil/water separation by speeding up emulsions separation through applying heat. Heater treaters can be thought of as low pressure, three phase separators equipped with fire tubes. They separate gas from the incoming emulsion and separate the emulsion into a water phase and an oil phase.