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.
本文简要地回顾了现有在自重力作用下钻柱稳定问题的计算。
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.
两个悬臂则固定在支架的内部结构上，并允许管架从贮存位置降到钻柱中线上。
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.
在石油钻井过程中，钻柱承载着大量的工作，因而井下钻柱部分常常出现许多故障和问题，且这些问题大多都是由于钻柱的弯曲变形与套管壁产生磨损及振动造成的。