页岩气藏的储层一般具有泥质胶结物含量高、毛细管现象突出、孔喉细小、渗透性差、结构复杂、非均质性严重、油气流动阻力大、常伴有天然裂缝等特点,对储集层损害非常敏感,很容易因钻采过程中各种入井工作液侵入储集层造成贾敏、液锁损害等。通过结合涪陵大安寨页岩储层的地质特征,开展一系列实验室贾敏效应评价的方法研究。 The shale gas reservoirs generally have the characteristics of high content of argillaceous cement, prominent capillary phenomenon, small pore throat, poor permeability, complex structure, serious heterogeneity, large oil-gas flow resistance and often accompanied by natural cracks. Reservoir damage is very sensitive, it is easy to drill into the reservoir due to a variety of drilling fluid into the reservoir caused by Jia Min, liquid lock damage. By combining the geological characteristics of shale reservoir in Da’anzhai in Fuling, a series of laboratory methods to evaluate Jia-jia effect were carried out.