Definition - What does Separator mean?

Separator is a vessel used to separate gas and liquid components from the fluids extracted from an oil well. Oil, gas or water can be removed from the fluids. It can also be defined as a device which separates a fluid into its constituent components. It is a capital industrial tool used on onshore or offshore wellhead platforms and in the refineries. It is also known as a stage separator, oil & gas separator or simply separator.

Petropedia explains Separator

A Separator consists of the following parts:

  • An extraction vessel.
  • A separation device located at the Primary separation section.
  • Mist extractor.
  • Liquid settling section.
  • Gas, oil & water outlet ports.
  • Valves for controlling pressure and temperature.
  • Level indicators.

Separators can be classified as:

  • Vertical, horizontal and spherical separators.
  • Two or three phase separators (Two phase means oil/gas separator and three phase means oil/gas/water separator).
  • Depending on the Separator functions they can be classified as – Test Separators, High pressure separators, and Low pressure separators.
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