drill stem meaning in Chinese

顿锻模钻杆
钻柱

Drill stem tests are taken from some wells almost immediately after drilling and completion operations .
有些井刚钻完并进行完井作业后，就立即采取钻杆测试。
Technology procedure for non - conventional drill stem testing
非常规地层测试技术规程
Recommended practice for drill stem design and operating limits
钻柱设计和操作限度的推荐作法
Automated centering system for drill stem friction welding machine
石油钻杆摩擦焊自动对中系统
Dynamic simulation of the contact between drill stem and well wall
钻柱与井壁接触的动态仿真分析

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