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粘土矿物的膨胀、分散和微粒运移造成地层孔隙的堵塞,是水敏性砂岩地层注水工艺中地层损害并导致吸水能力下降的重要原因,水质控制问题是一个十分关键的问题。本文初步建立了颗粒表面电荷特征的系统分类模式,以及这一模式与粘土矿物的膨胀、分散和微粒运移规律之间的本质联系,及其与注入水水质控制之间的相关规律,对中低渗透性矽岩油藏注水工艺中防止地层损害具有十分重要的参考作用。
The swelling and dispersion of clay minerals and clogging of formation pores caused by the migration of particles are the important reasons for formation damage and water absorption ability decline in water injection process of water-sensitive sandstone formation. Water quality control is a very crucial issue. In this paper, we systematically established the systematic classification of particle surface charge characteristics and the relationship between this model and the swelling, dispersion and particle migration of clay minerals, and the correlation between the model and the injection water quality control. It is very important to prevent stratigraphic damage in the process of water flooding in low permeable silicic reservoir.