Method for improving gas condensate shaft lifting efficiency

The invention relates to a method for improving the lifting efficiency of a condensate oil and gas shaft. The method comprises the following steps: constructing a gas phase actual state equation of a condensate oil multiphase system; quantitatively characterizing the saturated vapor pressure considering the gas-liquid equilibrium state of the gas condensate multiphase system; correlating a binary interaction coefficient and a gas-liquid equilibrium constant in the gas condensate multiphase system; determining an optimal binary interaction coefficient of a virtual component corresponding to each hydrocarbon component in the gas condensate multiphase system; establishing a correlation regression model of gas-liquid equilibrium constants of the gas condensate multiphase system in a phase equilibrium state; and the shaft lifting efficiency improving method of the gas condensate multiphase system is constructed. According to the method, the problem of how to determine the optimal binary interaction coefficient and