Separation Process on Offshore Topside platform

Separating and Treating Well Fluids

waterand gas oil, of Separation

gravity of force the

waterand gas oil, of Mixture -- produced fluids Well--

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waterand gas oil, of Separation

gravity of force the

waterand gas oil, of Mixture -- produced fluids Well--

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Principles and Operation of Production Separators

─ Gas, oil and water separation was achieved by

the difference in gravity, or weight, of each fluid.

─ Production separator do the same job, except they

are built to handle a continuous-flow stream and

have features to improve separation efficiency

under flow conditions.

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Three general types of separators

─ Horizontal separator ─ for high-pressure and medium-pressure service

─ Vertical separator ─ for low-pressure service (generally) ─ Spherical separator ─ more compact and cheaper ─ limited separation space and liquid surge capacity ─ for low-volume remote platforms

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Separators of Structure Internal

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Separation methods

─ Stage separation method

─ Low-temperature separation method

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Stage separation method (two stage separation)

Any number of separators may be used in stage separation as long as stage operates at successively lower pressures.

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Low-temperatures separation method

It is used to handle the production from high-pressure gas wells

Well fluids – a mixture of gas & some light liquids

Dehydration – the removal of water vapor from gas

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Low-temperature separation method

For high-pressure gas wells (well fluids: mixture of gas and some light liquids)

─ Dehydration to remove water vapor from gas

Working Sequence of Separator & Dehydrator

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