基于渗透率随压力呈指数变化规律，建立了任意形状应力敏感性双重介质油藏不稳定渗流的数学模型。
Based on the law of permeability changing with pressure, a mathematical model is established for unsteady percolation in dual-porosity reservoirs with arbitrary shape of stress sensitivity.
计算表明：考虑天然裂缝渗透率变化的滤失量要远远大于常规双重介质模型得到的滤失量，当净压力较高时，二者可相差10倍之多。
The calculation shows that, fracturing fluid leak-off considered variable permeability are greater than conventional fractured loss model, when net pressure is higher, the two has 10 times difference.
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