钻井过程对储层的损害,主要是粘土膨胀和微粒运移造成的。本文提出了一个比较实用又便于数值化的数学模型,它综合考虑了粘士膨胀、微粒运移以及岩石对微粒的吸附作用等因素对渗透率的影响,运用这种数值方法可以预测钻井完井液对储层的损害,对保护油气层具有重要的实际意义。 Drilling process damage to the reservoir, mainly caused by clay expansion and particle migration. This paper presents a more practical and easy to numerical mathematical model, which takes into account the sticky expansion, particle migration and the adsorption of particles on the permeability of rock and other factors on the permeability, the use of this numerical method can predict drilling completion Liquid damage to reservoirs has important practical significance for the protection of hydrocarbon reservoirs.