PRINCIPLE AND APPLICATION OF 3D GEOSTRESS MEASUREMENTS BY HYDRAULIC FRACTURING TECHNIQUE IN A VERTICAL BOREHOLE
在一个铅垂钻孔中水压致裂法三维地应力测量的原理和应用

According to the features of vertical borehole, the principle and method of 3D geostress measurements by hydraulic fracturing technique in a vertical borehole are advanced, and calculating formulas for data processing are presented through an example.