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基于双重介质模型,建立页岩气流固耦合渗流模型。模型考虑了储层压力改变对裂缝和基质渗透率的影响,通过COMSOL Multiphysics软件建立页岩气多段压裂开采物理模型并进行求解,模拟页岩气开采过程中气体流动。通过改变压裂裂缝参数,观察页岩储层压力的变化。
Based on double media model, shale gas fluid-structure interaction seepage model is established. The model considers the influence of reservoir pressure change on fracture and matrix permeability. The physical model of multi-stage fracturing in shale gas is established by COMSOL Multiphysics software to simulate the gas flow in shale gas production. The change of shale reservoir pressure was observed by changing fracturing parameters.