由于电导率对孔隙度、孔隙流体类型以及饱和度很敏感,因而它是一个重要的储油参数。虽然感应测井已广泛地应用于获取井旁的电导率,但是地面电场和磁场系统的分辨率很低,这就大大限制了在井间区获得此信息的能力。低频井间电磁法所提供的分辨率将远超出前述方法。劳伦斯利弗莫尔国立实验室 Because conductivity is sensitive to porosity, pore fluid type, and saturation, it is an important oil storage parameter. Although inductive logging has been widely used to obtain conductivity near the well, the resolution of the terrestrial electric and magnetic field systems is very low, greatly limiting the ability to obtain this information in the crosswell. The resolution provided by the low-frequency crosswell electromagnetism method will go far beyond the aforementioned method. Lawrence Livermore National Laboratory