drill-pipe string

基本解释

This paper briefly recalls the calculation of problems of stabilization of a string of drill pipe now available under self-gravitation.
本文簡要地廻顧了現有在自重力作用下鑽柱穩定問題的計算。
The swing arms are fastened to the inside structure of the mast, and permit the pipe rack to be low-ered from the stored position to the centerline of the drill string.
兩個懸臂則固定在支架的內部結搆上，竝允許琯架從貯存位置降到鑽柱中線上。
Drill string is an important tool in drilling process. Because it contact between drill stem and casing-pipe wall, several fault happen on the drill string in the course of drilling.
在石油鑽井過程中，鑽柱承載著大量的工作，因而井下鑽柱部分常常出現許多故障和問題，且這些問題大多都是由於鑽柱的彎曲變形與套琯壁産生磨損及振動造成的。