Nitrogen gas with different displacing velocity and pressure was used to displace the core in testing, the permeability damage and correlation analysis caused by velocity sensitivity were obtained.
实验用氮气以不同的驱替速度和驱替压差驱替岩心，得到由速敏性引起的渗透率损害及相关分析结果。
One of main damage factors in low-permeability sandstone oil pool is pressure sensitivity, degree of which is dependent on rocks features.
油藏采出流体后，地层压力下降，渗透率和油井产量都会有不同程度的降低，即出现所谓的应力敏感。
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