A physical object that is an assembly of pipes and piping parts, with valves and associated control equipment that is connected to the top of a wellhead and is intended for control of fluid from a well.

A gravity separator where two liquid substances separates and where the substance with the less gravity can be skimmed off.

A physical object intended to catch fluid droplets.

A tank or vessel in which a process stream is charged or pumped and where lighter products flash off or vaporize and are drawn off at the top. The remainder heavier fractions are drawn off at the bottom of the vessel.

A static device generating centrifugal force from an incoming flow which separates solid or liquids from a gas of a different density.

A cyclone separator intended to separate a fluid by hydraulic forces.

A distillation column intended to clean gas by washing the gas flow with water or with another liquid entering at the top of the vessel and sprayed in the gas. Typically to remove dust and small particles.

A catcher intended to catch and separate liquid slugs from a fluid stream.