Condensate gas reservoir yield splitting method and device

The invention relates to a condensate gas reservoir yield splitting method and device. The method comprises the steps that a state equation of condensate gas fluid and a state equation of crude oil fluid are established; by using the state equation of the condensate gas fluid, a natural depletion experiment is carried out on the condensate gas fluid, a variation trend of a gas-oil ratio of the condensate gas fluid along with pressure is obtained, and according to the variation trend, a relational expression of the gas-oil ratio of the condensate gas fluid and the pressure is established; by means of the state equation of the crude oil fluid, a natural depletion experiment is carried out on the crude oil fluid, a variation trend of a gas-oil ratio of the crude oil fluid along with pressure is obtained, and according to the variation trend, a relational expression of the gas-oil ratio of the crude oil fluid and the pressure is established; a relational expression of a production gas-oil ratio and single-well stratum pressure; by means of the relational expression of the gas-oil ratio of the condensate gas fluid and the pressure, the relational expression of the gas-oil ratio of the crude oil fluid and the pressure and the relational expression of the production gas-oil ratio and the single-well stratum pressure, the yield of dry gas of a condensate gas reservoir and crude oil on a target layer is obtained.