论文部分内容阅读
利用等效介质理论的基本原理,对油气水三相在多孔介质中的不可压缩、非混相流动。根据多孔介质中孔隙的概率分布建立了一套计算油气水三相相对渗透率(KR)曲线的基本方法。并且,编制了相应的计算软件EMTKR-3。应用该软件可以对任意类型的孔隙概率分布函数进行油气水三相等值KR曲线的计算。同时,研究了油水两相同渗、油气两相同渗、油水粘度比等因素对三相渗流条件下等值KR曲线的影响。结果表明:在渠道流态条件下,强湿相和强非湿相的相对渗透率只是其本身饱和度的函数,而中间润湿相的相对渗透率是两相饱和度的函数。
Using the basic principle of equivalent media theory, the incompressible and non-miscible flow of oil-gas-water three-phase in porous media is studied. According to the probability distribution of pores in porous media, a set of basic methods for calculating the relative permeability (KR) curve of oil-gas-water three-phase was established. And, the corresponding calculation software EMTKR-3 is compiled. The software can be used to calculate any type of pore probability distribution function for three-phase equivalent KR curve. At the same time, the influence of the same seepage of oil and water, the permeability of two phases of oil and gas, the viscosity ratio of oil to water on the equivalent KR curve under three-phase seepage condition was studied. The results show that the relative permeability of the strong and the non-wet phases is only a function of saturation, while the relative permeability of the intermediate wetting phase is a function of the two-phase saturation.