pipe-in-pipe casing string
常见例句
- 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。 返回 pipe-in-pipe casing string