By use of oriented perforator, a certain variance of Angle and azimuth between actual perforated hole and former design is made which mainly caused by hole trace, perforated hole Angle.
采用定向射孔，使得实际射孔孔眼与原来设计的具有一定角度和方位的偏差，主要有孔眼轨道产生的偏差、孔眼角度产生的偏差等。
Inclinometer is an Instrument testing drift Angle and azimuth of drift hole.
斜仪是一种测定钻孔倾角和方位角的仪器。
And the variation law of the hole collapse pressure of extended reach well along with hole Angle and azimuth mostly decided by the status of the stratigraphic in-situ stress.
大位移井井壁坍塌压力随井斜角与井斜方位角的变化规律主要由地层的原地应力状态决定。
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.
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。
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