Gas field topside separation process

1. Separating and Treating Well Fluids
waterandgasoil,ofSeparation
gravityofforcethe
waterandgasoil,ofMixture--producedfluidsWell--
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2. `
waterandgasoil,ofSeparation
gravityofforcethe
waterandgasoil,ofMixture--producedfluidsWell--
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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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SeparatorsofStructureInternal

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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

12. Working Sequence of Separator &
Dehydrator
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