Abstract: In accordance with the complexity of phase state characteristic of gascondensatewater in gas condensate reservoir, and the phase state between condensate and gas is considered in conventional phase equilibrium calculation, the PVT(pressurevolumetemperature) experiment in which the gaseous condensate water component is included in the fluid′s composition is carried out. The CCE(constant composition expansion) and CVD(constant volume depletion) experimental procedures for gas condensate system which includes the oversaturated water are simulated, the result shows: because the existence of oversaturated water in gas condensate system, the phase state characteristic will obviously influence CCE and CVD. The consequence is very important to research the complicated multiphase fluid phase equilibrium.

Key words: gas condensate reservoir, oversaturated water, phase state simulation, CCE experiment simulation, CVD experiment simulation.