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低渗透性的裂隙岩体是地下水封石油洞库建库的最佳选址区,裂隙网络模拟技术是研究离散裂隙渗流的有效手段。以黄岛地下水封洞库库区渗透性研究为出发点,在地表裂隙调查与钻孔裂隙统计的基础上,运用离散裂隙模拟软件DFN对洞库区进行三维裂隙网络模拟,得出模拟区导水系数分布图以及ZK13钻孔连通性分布图,通过将模拟结果与野外试验结果对比,认为模拟结果合理可信。实例分析表明,模拟结果能较为深刻地揭示裂隙水渗流的本质,可为后续的洞库水封效果及涌水量评价提供参考。
The fractured rock mass with low permeability is the best site for reservoir construction of underground water sealed petroleum reservoirs. The simulation of fractured network is an effective method to study the seepage of discrete fractures. Based on the study of the permeability of the underground reservoir in Huangdao, the fractures of the surface and the fractures of the borehole were simulated by using the discrete fracture simulation software DFN to simulate the three-dimensional fracture network in the reservoir area, Coefficient distribution chart and ZK13 borehole connectivity distribution chart. By comparing the simulation results with the field test results, it is considered that the simulation results are reasonable and credible. The case study shows that the simulation results can reveal the nature of fissure water seepage more deeply and provide reference for the subsequent water seal effect and gushing water evaluation.