Abstract: he practical oil/gas fluid and cores from production well from Kelake gas field in Xinjiang are used and three kinds of curves tested: relative permeability curve of balanced oil and gas under high pressure and high temperature, normal relative permeability curve and improved normal relative permeability curve considering the effect of irreducible gas. The study also establishes individual well model and analyzes the influences of the different permeability curves on the production performance in gas condensate reservoir. The article indicates that when the three kinds of curves (balanced oil and gas, improved curve and normal curve) is uesed to predicts the individual well performance, the predicted gas recovery is very close, oil recovery goes down orderly and gas condensate saturation in nearwellbore goes up in turn. The results are important to choose correct relative permeability curves, recognize the gas exploitation and guide the late stage of gas field development.

Key words: relative permeability curves, gas condensate reservoir irreducible gas saturatio, recovery individualwell performance