页岩渗透性影响因素分析

Analysis of Shale Permeability Affecting Factor

为了研究页岩渗透性,探究影响页岩渗透率的主控因素,从页岩储层的裂隙、温度、有效应力及滑脱效应4个方面分析了页岩的渗透性。分析表明,页岩的渗透率与其裂隙宽度、裂隙的密度及其连通性有密切的关系,渗透率随裂隙的宽度和密度的增大而变大,裂隙的连通性越好,渗透率越高;页岩渗透率随温度的增加而下降;页岩储层的渗透率随有效应力增大而减小;流体的运移随滑脱效应的增强而升高。

In order to study the shale permeability,explore the main factors affecting the shale permeability, from four aspects, such as shale reservoir cracks, temperature, effective stress and slippage effect,analyzes the shale permeability. Analysis shows that the shale permeability has a close relationship with its fracture width, fracture density and their connectivity,the permeability increases along with the increase of crack width and density lthe better the connectivity,the higher the permeability; shale permeability decrease along with the increase of temperature ,shale permeability decreases with increasing effective stress; along with the enhancement of slippage effect of fluid migration.