当人们为了改善围岩中流体的循环(比如开发“干热岩石”的热能)而力求用水力破碎钻孔的井壁时,重要的是首先必须知道是否已经成功的造成了一个裂缝以及这一裂缝的伸展方向。采用下面所介绍的这种电测量就可以达到目的,其原理是测量充满井中的 When one strives to crush a drilled borehole wall hydraulically in order to improve the circulation of fluids in the surrounding rock (such as the heat energy of a “dry hot rock”), it is important first to know if it has succeeded in creating a fracture and The direction of this crack extension. This can be achieved using the electrical measurement described below, which is based on the principle of measuring