岩心的渗流特征决定了油气的分布规律和储藏信息，利用数字岩心技术建立孔隙网络模型，对真实岩心孔隙结构进行驱替模拟和渗流分析具有重要意义。然而孔隙结构的宏观渗流特性由其微观特征所决定，因此研究渗流路径特征具有重要意义。为了从微观层面来分析孔隙结构的渗流特性，研究了连通路径和渗流路径的搜索算法；给出渗流路径特征相关参数的定义和计算公式；最后给出孔隙网络模型的路径搜索结果，以及渗流路径特征参数结果。

The percolation characteristics of the core determine the distribution of oil and gas and storage information. Using digital core technology to establish the pore network model is very important for the simulation and percolation analysis of the true core pore structure. The macroscopic percolation characteristics of the pore structure are determined by their microscopic characteristics, so it is important to study the characteristics of the percolation path. In order to analyze the seepage characteristics of the pore structure on the microscopic level, the search algorithms of the connected path and the percolation path are studied. Then, the definition and calculation formula of the relevant parameters of the percolation path characteristics are put forward. Finally, the path search results of the pore network model and the percolation path characteristic parameters are presented.