低渗油藏储层应力敏感性及其对单井产量的影响

采用变围压应力敏感实验方法,具体实测了A低渗油藏储集层岩样不同有效压力下的渗透率,根据实测的结果回归出A低渗油藏储集层应力敏感性的幂函数关系式,总结了储层渗透率随油藏压力的变化规律。在考虑储集层应力敏感影响的情况下,推导出新的产量方程,计算了渗透率变化对单井产量的影响。研究表明:该A低渗油藏储集层应力敏感性在0.37~0.54之间,在考虑储集层应力敏感性的条件下,油藏单井产量降低,并且随着敏感性的增强,降低的幅度越来越小。

Effection of Low-leakage Oil Storage Layer Stress Sensitivity on Single Well Production

The experimental methods of change the confining pressure used in stress-sensitive,specifically measured the permeability of A reservoir rock samples under the different effective pressure,returned the Areservoir permeability stress sensitivity power function relationship,according to the results of the measured,summed up the reservoir with the reservoir permeability changes of pressure.In considering the stress-sensitive reservoir influence,derived from the output of the new equation to calculate the perme...