Levelling is usually carried out with vertical drill holes.
整平爆破通常用垂直炮眼进行。
In this paper, the controlling system to improve ordinary vertical drill to automatic drilling machine based on PLC is introduced, and the automatic drill is suitable for batch production.
本文给出了用可编程控制器(PLC)将普通立式钻床改造成可批量加工的专用自动钻床的控制方法。
Many modern oil and gas wells are drilled directionally. At first, loggers had to run their tools somehow attached to the drill pipe if the well was not vertical.
现在，许多油气井都是定向钻井。起初，在非垂直钻井情况下，测井家不得不将测量仪器嵌接在钻杆上而进行测井。
应用推荐