【摘要】 在毛细管束模型基础上 ,根据流体力学理论探讨了泥质不同分布形式对渗透率的影响 .建立了分散泥质和层状泥质与渗透率的定量关系式 ,提出了泥质砂岩的渗透率综合模型 ,由模型确定渗透率所需参数可从岩心及测井有关数据得到 .利用此方法处理了大庆地区的实际资料 ,计算渗透率与理论渗透率的平均绝对误差为 2 .8× 10 - 3μm2 .更多还原

【Abstract】 Based on a capillary buddle model, this paper discusses the effect of different distribution of shale in shaly sand on its permeability with the aid of hydrodynamic theory. For getting relative true permeability of shaly sand, we developed a new model taking into account the dispersed, laminar and structural shales. The quantitative equation relates the permeability for shaly sand to porosity, dispersed and laminar shale, cementation exponent and average grain diameter of solid matrix. The parameters needed in the model can be acquired through core analysis and logging data. The model was applied in the Daqing oil field, which showed that the theoretical prediction and the experimental data are very close to each other.更多还原