1) drill collar for well-drilling machines
钻井机钻铤
2) Drill collar
钻铤
1.
Research on a new stress relief groove of drill collar threaded connections;
新型石油钻铤联接螺纹减应力区的研究
2.
Measuring residual stress by blind-hole method for the box connection of Ф158.8 mm drill collar;
用盲孔法测量Ф158.8mm钻铤内螺纹端残余应力
3.
Dynamic load analysis of the drill collar during jarring operations by the FEM
震击作用时钻铤上动载荷的有限元分析
3) drilling collar
钻铤
1.
The study on drilling collar screw-stick,analysis of drilling collar screw thread and test of material and thread parameter have been done.
对钻铤粘螺纹事故进行了调查研究,并进行了宏观形貌和材质分析;对新钻铤材质和螺纹参数进行了检验,并采用不同旋螺纹扭矩对新钻铤试样进行了上卸螺纹试验。
2.
Fractographic and metallographic examination, mechanical testing have been carried out on the failure analysis of the drilling collar.
对钻铤断裂原因进行了断口分析、金相检验和力学性能试验。
4) drilling capacity
钻机钻井
5) slick assembly
光钻铤
6) drill collar screw
钻铤螺纹
1.
Main reasons of causing drill collar screw failure are discovered by way of further investigation and analysis on these problems.
通过对钻铤螺纹失效问题的深入调查和分析,找出引起钻铤螺纹失效的主要原因。
补充资料：钻井机
用于钻井的设备。包括提升、旋转、钻具和反循环洗井四部分。提升部分用于升降钻具和提吊钢筋混凝土井壁。旋转部分用于使钻头旋转，以破碎土岩。反循环洗井部分用于使泥浆循环清洗井底并将岩屑带到地面。
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