Non-rotary casing protective tool 非旋转套管保护工具
rotary valve casing 旋转阀外壳
all casing rotary drilling 全套管旋挖成孔
Retaining casing pipes rotary drilling 套管护壁作业旋挖成孔
In order to reduce drilling cost, the casing drilling technique rotated by rotary table and associated tools were developed considering the actual condition of domestic onshore drilling tools.
根据国内陆上油田钻井装备的实际状况，本着降低钻井成本的目的，研究出了采用转盘驱动的适用于陆上油田浅开发井的简易套管钻井技术及其配套工具。
Lower device ~ lower casing, charger inlet, tail shaft assembly, tensioner, and with optional rotary detector and level switch.
下部装置——包括下部机壳、进料口、尾轴装配、张紧装置，并有旋转探测仪、料位开关供选配。
The configuration and principle of anti rotary plug and necessary float collars and their applications in intermediate casing cementing are introduced.
介绍了防转胶塞及配套浮箍的结构、原理和在技术套管固井中的应用情况。
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