钻进不均质岩层时，钻孔往往会偏离垂直线，因此必须每隔一定时间就测量一次倾斜角及其在水平面上的方位角，但用现有测斜仪器测量钻孔弯曲度的缺点是一定要在发生孔斜后一定时间才能进行测量工作。 When drilling into an inhomogeneous rock formation, the borehole tends to deviate from the vertical line. Therefore, the inclination angle and its azimuth angle on the horizontal plane must be measured at regular intervals. However, the disadvantages of using the existing inclinometer to measure the borehole curvature are necessary. It is a certain time that measurement must be performed after the hole inclination occurs.