根据实验结果 ,建立了高温、低界面张力作用下油水相对渗透率经验模型 ,模型中的参数是温度、界面张力的显函数。根据该模型讨论了温度、界面张力对残余油饱和度、束缚水饱和度及相对渗透率的影响 ,并将计算结果与实验结果进行了对比。结果表明 ,该模型可以较好地反映相对渗透率在高温、低界面张力下的变化规律 According to the experimental results, an empirical model of relative permeability of oil and water under high temperature and low interfacial tension is established. The parameters in the model are the explicit functions of temperature and interfacial tension. According to the model, the effects of temperature and interfacial tension on residual oil saturation, irreducible water saturation and relative permeability are discussed. The calculated results are compared with the experimental results. The results show that the model can well reflect the variation of relative permeability under high temperature and low interfacial tension