中文摘要：

将CO_2封存于地下深部含水层,是减轻碳排放压力的有效手段之一。CO_2-盐水相对渗透率是影响地层中CO_2迁移、捕获的最重要参数之一。在借鉴油气资源领域渗透率研究成果的基础上,详细论述了影响CO2-盐水相对渗透率的因素,包括流体性质、流体饱和历史和岩石结构,认为流体性质对相对渗透率的影响主要体现在界面张力、黏度比和毛管数的大小;不同流体饱和历史的相对渗透率曲线存在明显滞后性;岩石结构通过矿物润湿性和孔隙结构差异影响相对渗透率大小;最终得到的相对渗透率曲线是各因素叠加的综合结果。

英文摘要：

Sequestration of CO_2 into deep saline aquifer is one of the most promising technologies to miti- gate greenhouse effects and relieve carbon emission pressure. CO_2/brine relative permeability is one of the most essential parameters determining the optimization of well injection, migration of CO_2 in reservoir and amount of capillary capture in some extent. In this paper, based on fully investigation of previous study re- suits about relative permeability in the oil/gas field, several factors affecting CO_2/brine relative permeabil- ity have been discussed, which include fluid properties, saturation history and rock structures. It iscon- cluded that the influences of fluids properties mainly depend on the interfaeial tension, viscosity ratio and capillary number. The relative permeability curves under different saturation histories show distinct hys- teresis. Moreover, the rock structure shows that it impacts on the relative permeability caused by the wet ability of minerals and the difference in pores structure. Therefore, the final curve is an integrated result coupling all above factors.