dew point

1. n. [Well Testing, Enhanced Oil Recovery]
The pressure at which the first condensate liquid comes out of solution in a gas condensate. Many gas condensate reservoirs are saturated at initial conditions, meaning that the dewpoint is equal to the initial reservoir pressure. Condensate dissolution is called retrograde condensation because this is counter to the behavior of pure substances, which vaporize when the pressure drops below thesaturation pressure under isothermal (constant temperature) conditions.