Precautions for using water well drilling rig
The water well drilling machine needs to be installed and connected firmly before using it in drilling. The following are the relevant operation steps of the water well drilling rig to add and connect the drill pipe: 1. When the water well drilling rig needs to add the drill pipe to the depth of 1 drill pipe, first stop the advancement and then stop the rotation. Turn off the cooling water; 2. Operate the gripping handle to make the gripper clamp the drill rod, and open the micro-adjusting flow valve (right-handed); 3. Reverse the gyrator, and at the same time, move backward to feed the cylinder to make the water Rotate the braid shaft from the drill pipe; 4. Stop the rotation and operate the fast forward and retreat handle to the fast retreat position to make the chuck quickly retract into place; 5. Connect the drill pipe to be added to the previous drill pipe, and the rotator side When screwing forward, when the trapezoidal taper thread of the water braid shaft is in contact with the taper thread of the newly added drill pipe, immediately manipulate the gripper handle to loosen the holder to complete the drill pipe attachment.
It is very complicated and inexplicable to use brackets to run casing after drilling the wells written in the book. The author saw the process of running casing in a place where a water well was drilled nearby. First of all, it was explained that the casing was a steel pipe. Each steel pipe (casing) had one head welded with three pieces of paper with a length of about 150mm and a diameter of φ20. Round steel. Use the casing clamp to clamp it, and lift the casing as shown in the figure above. Then weld the butt joints firmly.
