摘要
通过分析粘滞不稳定性准数、界面张力、润湿性、孔隙度等因素随温度变化而变化的状况,详细讨论了温度影响油水相对渗透率的机理。实验研究证明,随温度升高,岩心绝对渗透率降低,束缚水饱和度增加,残余油饱和度降低,水的相对渗透率降低,油的相对渗透率增加,同时具体分祈了产生每一个变化的原因。
Relative permeability is a most important parameter in describing the multiphase flow behavior of reservoir fluids in porous medium. With the progressing of thermal oil recovery, a number of studies of temperature effects on relative permeability have been reported. However, some of the reported results are contradictory. Particularly, in recent years, some studies reported that relative permeabilities show no temperature dependence. The purpose of this study attempts to give a understanding of the fundamental properties affecting oil/water relative permeabilities at elevated temperature, ie. the effects of various factors: the change of viscous instabilities, interfacial tension, wattability and porosity, etc. at elevated temperaturees. Experimental results indicate that relative permeability curves demonstrated in this paper are affected by temperature. Relative permeability to oil increases and relative permeability to water decreases at a given saturation while residual oil saturation decreases and irreducible water saturation increases with increasing temperature. The reason of these changes are discussed also.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1992年第3期62-70,共9页
Acta Petrolei Sinica
