1) pin hole of last blade
折向钻
2) rig down
折卸钻机
3) drilling pipe fracture
钻杆折断
1.
The cause of drilling pipe fracture was discussed according to the analysis on construction conditions of wire-line coring drilling and accident scene,and the prevention countermeasures were put forward.
通过分析绳索取心钻探施工工况、钻杆折断事故现状及折断部位,探讨绳索取心钻杆折断的原因,提出预防绳索取心钻杆折断措施。
4) stacked derrick
折叠式钻塔
5) jack bit
可折式钻头
6) directional drilling
定向钻
1.
On-site crossing test of small-sized directional drilling and its application;
小型定向钻现场穿越试验及应用
2.
The application of trenchless installation directional drilling technology in city gas construction;
非开挖定向钻技术在城市燃气建设中的应用
3.
Initial analysis on crossing control method by directional drilling
定向钻穿越施工控制方法
补充资料：冻土钻(见取土钻)
冻土钻(见取土钻)
dongtuzuan冻土钻见取土钻
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条