Seepage Model of Condensate Gas and Its Application in Compound Gas Reservoir with Transition Zone

According to the phase change of condensate gas flowing in porous medium,characteristics,set up the condensate- gas unsteady seepage differential equation,At the same time introduced the condensate- gas seepage equation of two phase pseudo pressure function of the linearization;To form different fluid field of condensate gas reservoir,condensate gas reservoir of edge water,lithologic pinchout condensate gas reservoir and bottom hole existing pollution and improve the situation,the existence of condensate gas reservoir has been established the practical situation transition zone compound gas reservoir in the condensate oil-gas seepage new model,and the condensate gas reservoir oil- gas pressure distribution of the Laplace space analytic solution,established the pressure recovery of condensate gas well well test specific explanation method,to guide the rational development of gas fields to provide reliable basis.