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低渗透储层水驱开发过程,岩石特性、孔隙度、孔隙结构特征、渗透率、水驱速率、驱替压力、油水粘度比、裂缝角度、储层温度、润湿性、束缚水饱和度等因素均影响水驱效果。本文通过室内实验分析方法,研究了不同因素对水驱效果的影响。实验结果表明,岩石特性与水驱效率存在一定的相关性,随着储层渗透率、孔隙度的下降,水驱效率迅速地下降。并且,具有裂缝特征的岩心驱油效率明显高于未具有裂缝特征岩心驱油效率。
Low-permeability reservoir water flooding development process, rock characteristics, porosity, pore structure characteristics, permeability, waterflooding rate, displacement pressure, oil-water viscosity ratio, fracture angle, reservoir temperature, wettability, irreducible water saturation Factors affect the water flooding effect. In this paper, the influence of different factors on the waterflooding effect is studied through laboratory experimental methods. The experimental results show that there is a certain correlation between rock properties and waterflooding efficiency. With the decrease of reservoir permeability and porosity, the waterflooding efficiency decreases rapidly. Moreover, the efficiency of core flooding with fractured features is obviously higher than that without fractured core flooding.