Estimating dew point pressure for a gas condensate lead

[REGI_MAX]

in this case Pd is equal the pressure at GOC.... but at the top, the dew point pressure could/should be lower, due to the compositional gradient ...

[catapam]

in this case Pd is equal the pressure at GOC.... but at the top, the dew point pressure could/should be lower, due to the compositional gradient ...

I would also assume that in most of the cases, gas condensate fields, may have an oil rim, and in this case, as you said Pd slightly vary because compositional gradient, but even at the top of the reservoir dew point remain close to initial pressure. That mean shortly after production is started condensate will start dropping into the reservoir.

This is clear.
But what are the chances for a gas condensate field to have very low dew point compare with initial pressure?
(let.s say half from initial pressure)