Calculation method for dynamic reserves of high-sulfur-content gas reservoir

The invention discloses a method for calculating dynamic reserves of a high-sulfur-content gas reservoir. The method comprises the following steps: acquiring production dynamic data, output fluid physical property parameters and gas reservoir parameters of the gas reservoir; the method comprises the following steps: testing deviation coefficients of high-sulfur-content natural gas under different pressures and different temperatures by adopting a phase state analyzer, and obtaining a nonlinear equation of the deviation coefficients of the high-sulfur-content natural gas reservoir through multivariate nonlinear fitting according to physical property parameters of produced fluid and reservoir parameters of the gas reservoir; according to the production dynamic data and the gas reservoir parameters, the bottomhole flow pressure is calculated based on a pipe flow model, and the formation pressure is determined by adopting a binomial productivity equation; and establishing a dynamic reserve calculation model by ad