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retrograde condensation

1. n. [Production Testing]

The formation of liquid hydrocarbons in a gas reservoir as the pressure in the reservoir decreases below dewpoint pressure during production. It is called retrograde because some of the gas condenses into a liquid under isothermal conditions instead of expanding or vaporizing when pressure is decreased.

See: condensatereservoir pressure

Phase envelope for a retrograde condensate.
Phase envelope for a retrograde condensate.

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