... off-axis angle 偏轴角 off-angle drilling 钻斜井 ; 钻斜孔法 Off-Boresight Angle 次监视雷达偏离角 ...
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本文介绍了反井钻这一新型的竖井和斜井开挖施工设备，以及该设备在国内水电工程中的应用。
One advanced construction equipment for vertical and inclined shafts, named Raise Reaming Machines is introduced in this paper, together with its first application in Chinese hydropower project.
井下稳定器安放位置调节器是斜井旋转钻井时实施井斜连续控制的专用工具， 安装在钻头与钻铤之间。
The downhole stabilizer location adjuster, fixed between the bit and the drill collar, is a special tool for continual deviation control of a slant hole.
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