1) heavy collar
加重钻铤
2) unbalanced drill collar
偏重钻铤
3) BW
钻铤减浮重量
4) oversize drill collar
加大尺寸钻铤
5) 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
6) 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。
补充资料：偏重
1.不平，不公平。 2.特别看重。 3.着重一方面。
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