Suction blockage of the DTH hammer generally occurs when there are many residual debris in the well, especially in the condition of “thick paste”. The pressure difference inside and outside the circulation channel is large, and the bottom hole rock powder is sucked back from the clearance of the DTH hammer. Solutions: (1) Carefully check the DTH hammer check valve and replace the damaged parts before drilling down. (2) Carefully check whether the clearance and sealing performance of the piston and the inner (outer) cylinder, piston and valve are in good condition, and replace the damaged parts. (3) Strictly implement the operat...

Due to the actual drilling conditions or the lack of correct operation of the drill bit, the down-the-hole drill often forms a wear pattern. If it is not judged in advance and re-ground before its wear cycle comes, it will cause the drill bit to perform poorly or prematurely. Failure, effective maintenance of the DTH drill bit can reduce the loss of effect to a certain extent. The main manifestations are: 1. Tailpipe and impact end Make sure the tailpipe is broken. Often caused by straight line deviations caused by wear on the piston or cylinder, lack of lubrication leads to extraction and water corrosion. Second, the drill head Wear of t...

High air pressure DTH hammer, working pressure is generally above 20kg/cm², is a high-efficiency rock drilling equipment. Some bosses always try their best to compare prices when buying hammer drills, and look for lower-priced hammer drills. This is true, but it is not that the lower the price, the more savings. Some bosses always try their best to compare prices when buying hammer drills, and look for lower-priced hammer drills. This is true, but it is not that the lower the price, the more savings. Of course, in addition to choosing the brand of the hammer bit, we should also find ways to reduce the cost from the use of the hammer bit. ...

The roller cone bit is a key tool for oil drilling, and it is also long used in water well drilling work to drill hard stones together with mud pumps. The quality of its working performance will directly affect the drilling quality, drilling efficiency and drilling cost. Most of the three-cone bit designs are based on practical experience, combined with the method of trial and error, and continuous design and calculation. Therefore, the design accuracy is low, the cycle time is long, and the design quality cannot be improved, and only one bit can be designed for each calculation. low efficiency. The roller cone bit has the functions of im...

The drill bit plays a pivotal role in the drilling process of the water well drilling rig. The quality of a drill bit directly affects the efficiency of water well drilling and the quality of the hole, so we need to pay attention to the selection 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 perform better production operations. Several aspects of the drill bit in the water well drilling rig need to be paid attention to: After the drill bit of the water well drilling rig drills into the structure, the center drilling tool needs to...

When working in different rock formations, choose different types of down-the-hole drill bits, axial pressure and rotational speed according to the hardness of the lithology. 2. During the perforation operation of the down-the-hole drilling rig, the operation must be carried out in accordance with the principle of matching the three elements of perforation (wind pressure, axial pressure, rotational speed) and the parameters recommended by the drill bit sample. 3. Before the drill bit goes down the well, please check the appearance of all parts, and verify whether the end face of the drill bit thread is consistent with the factory number...

The service life of mining tools is determined by two factors: the inherent quality of the product itself and the scientific method of use. The quality of the mining tools itself is poor, no matter how carefully and scientifically used, it will not be able to achieve a high level. A good mine drill bit, if it is careless and reckless and not used in accordance with the scientific method, will also be scrapped in advance, and it will not be able to play its due potential, and it will not be able to play at a high level. 1. Selection of mining drill bits According to the nature of the rock, choose the appropriate cemented carbide mining bit...

The concentric drilling tool(concentric drilling bit) is the only new type of concentric drilling tool that uses the concentric principle at home and abroad. It has been successfully used and has been widely promoted. Principle structure: This drilling tool relies on the leading middle platform, and the tube shoe platform of the steel pipe transmits the impact force to the steel pipe. The front of the head is a triangular inner spline groove, which drives a triangular concentric shaft positioning drill bit that can slide back and forth. Between the head and the hole drill, there is a piece of the three oblique arc grooves on the end face ...

The blocking of falling objects is also due to unclean drilling tools and surface pipelines, large-size attachments on the inner wall (cement blocks, cuttings, etc. during cement consolidation), and other large-size debris falling into the drill pipe. The upper end of the down-the-hole hammer is stuck in the part of the check valve, so that the check valve cannot be quickly reset,when the water well drilling rig works. Solution: (1) Carefully inspect and clean the drilling tools into the well to ensure that there is no debris on the inner wall of the drilling tools. (2) Regularly check the sealing performance and spring return performance...