1. To the hole position. Do not form the operation of the drill pipe, but be careful not to “don’t” the drill pipe
2、Release the drill. The process of extending the drill pipe by overcoming the frictional force of the hole wall and the buoyancy of the mud under the action of the gravity of the drill pipe and drilling tools is called.
Release the drill. The correct order of drill release is: the outer rod is put in place before the adjacent inner rod starts to extend from the outer rod, from outside to inside, one by one.
The process is completed one by one.
3、Drilling, pressurizing and drilling at a suitable rotating speed in positive rotation.
4、Unload the whole bottom. Be careful not to “don’t” the drill pipe.
Post time: Oct-24-2022