油藏润湿性影响因素综述

Review of the Influencing Factors of Reservoir Wettability

岩石表面润湿性是影响油、水在岩石孔隙中分布、流动的一个主要因素。岩石润湿性直接制约着油、水两相相对渗透率、毛细管力以及石油采收率。从岩石表面矿物组成、原油的组分、地层水、注入水的离子含量和离子组成、pH以及温度等方面讨论了油藏岩石的润湿性的影响因素。

Wettability of reservoir rocks directly restricts the relative permeability of oil and water in the microcrevice. It is a major factor that influenced the distribution of oil and water in the micro pore and oil recovery. Wettability is affected by many factors. The main factors including mineral composition of rock surface, composition of crude oil, ion composition and pH of formation water and injected water and temperature are discussed.