The drill bit plays an important role in the drilling process of the water well rig. The quality of a drill bit directly affects the efficiency of water well drilling and the quality of hole formation. Therefore, we need to pay attention to the choice and use of the drill bit. During the drilling process, the operator should pay attention to the drilling usage of the drill bit, so that the drill bit can better conduct the drilling work. There are several aspects of the drill bit in the water well drilling rig need to be paid attention to.
1. After the drill bit of the water well drilling rig has been drilled into the strata, the center drilling tool needs to be replaced in time. First, the bottom of the hole needs to be cleaned, and then the residue at the bottom of the hole need to be blown cleanly. After the drill bit stops rotating, drilling tools in the water well drilling rig have to be slowly lifted upwards. It is most suitable when the lifting force is just enough to lift the drill.
2. The drill bit of the water well drilling rig is summarized during the drilling process, and it is also necessary to carefully observe the follow-up of the casing, keep abreast of the specific situation in the hole, and clean the hole when necessary, and the drill bit in the water well rig, during the process, is prohibited to be lifted with strong force.
3. At the bottom of the hole of the water well drilling rig, there will be much rock residue, and the rotating part of the eccentric bit will be stuck by the rock residue which will affect its gathering production. At this time, it is necessary to send compressed air and clean the hole again. And make the DTH hammer work for a short time, and then re-lift the center drilling tool.