TY - EJOU AU - Zheng, Liming AU - Han, Xiaodong AU - Yang, Xinjun AU - Chu, Qingzhong AU - Li, Guanghui TI - Dimensionless Variation of Seepage in Porous Media with Cracks Stimulated by Low-Frequency Vibration T2 - Computer Modeling in Engineering \& Sciences PY - 2020 VL - 122 IS - 3 SN - 1526-1506 AB - Pulse excitation or vibration stimulation was imposed on the low permeable formation with cracks to enhance the production or injection capacity. During that process, a coupling of wave-induced flow and initial flow in dual-porous media was involved. Researchers had done much work on the rule of wave propagation in fractured porous media, whereas attentions on the variation law of flow in developing low permeable formation with cracks under vibration stimulation were not paid. In this study, the effect of low-frequency vibration on the seepage in dual-porous media was examined for the application of wave stimulation technology in developing reservoirs with natural cracks. A model for seepage of single-phase liquid in porous media with cracks under low-frequency vibration excitation was built by combining wave propagating theory for porous media with cracks and dual-porous media seepage mechanics. A governing equation group for the model, which was expressed by dimensionless fluid and solid displacements, was derived and solved with a numerical method. Variable physical properties were simulated to check the applicability of external low-frequency vibration load on dual-porous media and a parametric study for various vibration parameters. Stimulation of low-frequency vibration affected flow velocities of crack and rock matrix fluids. Compared with that in single-porous media, the stimulation effect on the fluid inner matrix of dual-porous media was relatively weakened. Different optimal vibration parameters were needed to increase the channeling flow between the crack and rock matrix or to only promote the flow velocity in the rock matrix. The theoretical study examines wave-coupled seepage field in fractured porous media with results that are applicable for low-frequency stimulation technology. KW - Low-frequency vibration KW - wave-induced flow KW - dual-porous media KW - crack KW - dimensionless DO - 10.32604/cmes.2020.07588