Based on the comprehensive understanding on microfractures and matrix pores in reservoir rocks, numerical algorithms are used to construct fractured porous media and fracture-pore media models. Connectivity coefficient and strike factor are introduced into the models to quantitatively characterize the connectivity and strike of fracture network, respectively. The influences of fracture aperture, fracture strike and fracture connectivity on the permeability of porous media are studied by using multi-relaxation-time lattice Boltzmann model to simulate fluid flow in them. The greater the strike factor and the smaller the tortuosity of the fractured porous media, the greater the permeability of the fractured porous media. The greater the connectivity coefficient of the fracture network is, the greater the permeability of the fracture-pore media is, and the more likely dominant channel effect occurs. The fracture network connectivity has stronger influence on seepage ability of fracture-pore media than fracture aperture and fracture strike. The tortuosity and strike factor of fracture network in fractured porous media are in polynomial relation, while the permeability and fracture network connectivity coefficient of the fracture-pore media meet an exponential relation.

基于对储集岩中微裂缝和基质孔隙的全面理解，运用数值算法构造了裂缝性多孔介质和裂缝-孔隙介质模型。将连通性系数和走向因子引入模型，分别定量描述裂缝网络的连通性和走向。利用多松弛时间格Boltzmann模型模拟了裂缝的开度，裂缝走向和裂缝连通性对多孔介质渗透率的影响。打击因子越大，破裂的多孔介质的曲折度越小，破裂的多孔介质的渗透率越大。裂缝网络的连通性系数越大，裂缝孔隙介质的渗透率越大，并且更可能发生主导渠道效应。裂缝网络的连通性对裂缝-孔隙介质的渗透能力的影响比裂缝口径和裂缝走向更为强烈。压裂多孔介质中裂缝网络的曲折度和走向因子呈多项式关系，而压裂孔隙介质的渗透率和裂缝网络连通性系数呈指数关系。