Terms containing work-string

Subject	English	Chinese
dril.	casing work-string annulus	套管与工作管柱间的环空
oil	concentric tubing work string	同心油管工作管柱
oil	work string	拖拉管
oil	work string	作业管柱
oil	work string	施工管柱
oil	work string	工作管柱
dril.	work string	活动钻具
oil	work string-casing annulus	工作管柱一套管环空