由于倾角仪在这种接近垂直的井中会失去效果，故工具无法参考其朝上的那端来做射孔方向定位。

Near-vertical wells have no reference to the high side of the well rendering inclinometers ineffective. To facilitate accurate gun positioning an oriented gun hanger would need to be set using a gyro.

youdao

由于倾角仪在这种接近垂直的井中会失去效果，故工具无法参考其朝上的那端来做射孔方向定位。

Near-vertical wells have no reference to the high side of the well rendering inclinometers ineffective. To facilitate accurate gun positioning an oriented gun hanger would need to be set using a gyro.

youdao