低渗裂缝性储层渗透性能变化的动态模拟

油井暴性水淹是裂缝性砂岩油田开发的普遍特征，这主要是开发过程中注水引起裂缝开启、扩展所致。根据有效压力变化对孔隙度、渗透率变化规律的实验研究结果，给出了储层渗流场和岩土变形场耦合关系式，考虑裂缝渗流的各向异性特征，给出裂缝性低渗透储层孔隙度、渗透率的简单计算方法，利用油藏流固耦合理论，对一五点井网先采用衰竭式开采，后注水的开发过程中，孔隙度、渗透率的变化情况进行了数值模拟。对于合理确定注水压力及井网的合理布置，防治水窜及暴性水淹等具有重要的指导意义。

Numerical Simulation of Changes of Porosity and Permeability during Low Permeability Fractured Oil Reservoir Development

The sudden and violent water flooding in low permeability fractured oil reservoir is common and harmful to oil developing, which is caused by opening and extending of fissures. In the paper, results of the experiments testing the changing law of porosity and permeability versus effective pressure were shown. Using the theory of fluid-solid coupling theory, the numerical models to simulate the porosity and permeability changes during oil development were given. In the end, A five spot wells web was simulated, and the author showed the simulation results as well.