We take a preliminary discussion about the contents of borehole environment, such as borehole tilt, borehole distortion, and borehole crossing through fracture belt and borehole history.

• 对钻孔环境的内涵作了初步的讨论,如钻孔的倾斜,钻孔的畸变,钻孔穿过破碎带和裂隙及钻孔的历史背景等。