微粒迁移 meaning in English

fine migration

The reservoir sensitivity test turns out that the whole basin is mainly water sensitivity and velocity sensitivity . so the research of reservoir sensitivity in this paper give some solving schemes as follows . water sensitivity of the first sag is strong , especially hydrous expansion of clay mineral ; velocity sensitivity of the second sag is strong , preventing particulate transmit ; permeability of the third sag is bad , to do fracture treatment mainly
由敏感性实验证明，整个盆地的敏感性主要以水敏和速敏为主，因此，哈尔滨工程大学硕士学位论文本文的储层敏感性研究为油层保护提出如下解决方案:第一凹陷水敏性较强，要特别注意防l仁粘1几矿物的水化膨胀;第二凹陷速敏性较强，要注意防止微粒迁移;第三iui陷渗透性较差，应以压裂改造为主。