目前的井眼轨迹方位角测量技术主要靠磁通门传感器，这种技术受地磁场及测量体周围金属管体的制约。
At present, hole trajectory azimuth Angle is measured mainly with magnetism sensor, but which is restricted by magnetic field and the metal tube around the surveying equipment.
目前的井眼轨迹方位角测量技术主要靠磁通门传感器，这种技术受地磁场及测量体周围金属管体的制约。
At present, hole trajectory azimuth Angle is measured mainly with magnetism sensor, but which is restricted by magnetic field and the metal tube around the surveying equipment.
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