Create good working conditions for dth drilling tools

(1) Diamond is brittle and easily broken under impact load, so it is required to clean the inside of the hole, the bottom of the hole to be flat, and the diameter of the hole to be regular.

(2) If it is found that there are cemented carbide chips, tire block chips, fallen diamond particles, metal chips, falling cores, falling blocks, etc. at the bottom of the hole, it is necessary to immediately use punching, fishing, pounding, grasping, sticking, sleeve, grinding, etc. , suction and other methods to remove.

(3) It is forbidden to use steel pellets to drill the holes drilled with diamond. Before the new diamond drill bit is drilled, the hole must be ground.

(4) Before changing the diameter and running the casing, the manufacturer of water well tools pointed out that the cleaning and trimming of the bottom of the hole must be done well. After changing the diameter and setting the casing, use a conical diamond drill to repair the diameter-changing step into a cone, and remove the foreign matter at the bottom of the hole before drilling.