相关的现场应用试验结果表明，经哈特曼发声器作用后，较低渗透率岩心的渗透率提高了126.5%，较高渗透率岩心的渗透率提高了177.1%；

The field application results show that the permeability of low-permeability cores and high-permeability cores can increase by 126.5% and 177.1% respectively by using Hartmann acoustic generator.

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目前，对防喷器等井控装置检测内部缺陷主要采用超声波、磁探、渗透等常规检测以及进行耐压试验，难以发现和判定已有裂纹的扩展。

At the present, defects inside a BOP are mainly inspected by conventional methods, such as UT, MT, PT, etc. and it bears a pressure test.

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