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本文以渗流力学为基础,参照裂缝导流能力的评价方法建立了水力压裂人工隔层控缝高的隔离层的微观渗流模型。把人工隔层视为滤饼,将滤饼的孔隙大小和孔隙形状分布作为颗粒大小分布的函数,将渗透率K作为孔隙大小、结构形变、隔层压差和厚度的函数来计算。从几何和渗流力学的角度来确定渗透率,这样就在一定程度上避开了传统的实验法测定渗透率。
Based on the seepage mechanics, the micro-seepage model of the isolation layer with high controllability of hydraulic fracturing is established with reference to the assessment method of the fracture conductivity. The artificial barrier is considered as a filter cake, and the pore size and pore shape distribution of the filter cake are taken as a function of the particle size distribution. The permeability K is calculated as a function of pore size, structural deformation, compartment pressure difference and thickness. From the geometry and seepage mechanics to determine the permeability, so to some extent, to avoid the permeability of the traditional experimental method.