bumper sub

常見(jiàn)例句

This topic originates from the sub-topic of the national grain bumper science and technology project.
本課題來(lái)源於國(guó)家糧食豐産科技工程的子課題。
A disadvantage of the bumper sub is maintenance costs both for the tool itself and lost time due to tripping pipe when one fails.
緩沖短節(jié)的缺點(diǎn)是維護(hù)工具本身的費(fèi)用和失傚時(shí)起下鑽造成的時(shí)間損失。
In light of the commonly seen downhole breakdown of drilling pipe sticking in the drilling process, the new-type fully hydraulic while-drilling bumper sub was developed.
針對(duì)鑽井過(guò)程中常見(jiàn)的井下卡鑽事故，研制了新型全液壓式隨鑽震擊器。