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Matters needing attention in construction of DTH drill bits

2022.01.20

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...

Selection of mining tools, use and normal maintenance

2022.01.13

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...

Concentric with tube reaming bit (concentric bit)

2021.12.31

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 cause and countermeasures of the falling object blocking the DTH hammer

2021.12.11

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...

Pay attention to safety matters during mine blasting

2021.12.03

Due to careless prevention, mine blasting often causes serious safety accidents, causing serious loss of personnel and property. What should be paid attention to in mine blasting safety? Pay attention to the following safety points during mine blasting: Preventive measures for safety accidents caused by detonating tubes: 1. There must be no dead knots in the detonation pipe network. There should not be any seams in the hole. 2. After inserting the detonator into the cassette, fasten the detonator and the cassette with a rope. When handling primary explosives, the detonator must be placed in the reserved hole of the primer. The ban came ou...

300m Water drilling rig UY300 was delivered to Maldives

2021.11.27

UY300 crawler drilling rig is mainly used to drill the borehole for Irrigation, household water etc. It uses the excavator special crawler chassis as the walking device, which has stronger off-road performance. UY series drill rig can equip not only Mud pump but also Air compressor to satisfy different work need. It is suitable for drilling water well holes in soil and stone works such as water conservancy etc. It has the advantages of fast footage, convenient operation and flexible movement. Sometimes it can also be used for slope protection,anchoring and piling. Drillable diameter is 80-500mm, economic depth is 300m. The UY300 crawler d...

Down the hole drilling rigs were exported to Peru

2021.11.26

On September 15, two KT11 integral high-pressure down-the-hole drilling rigs were shipped in Lianyungang and exported to Peru, a South American country. This order puts forward higher requirements for large-scale drilling equipment. After customers’ repeated screening of various drilling products across the country, Unique Group the KT11 integral high-pressure down-the-hole drilling rig has advanced technology, compact structure and excellent performance. The advantages of safety, reliability, energy saving and environmental protection have finally been affirmed by users. Since the beginning of this year, our group’s foreign t...

How to choose drill bits for different working formations of water well drilling rigs?

2021.11.19

How to choose drill bits for different working formations of water well drilling rigs? The drill bit is one of the important drilling tools in the drilling of water well drilling rigs. It can be said that without the drill bit, the water well drilling rig equipment cannot start production normally. This shows the importance of the drill bit in the water well drilling rig. For different types of water well drilling rig equipment, different drill bits are required in production. When selecting a drill bit for water well drilling rig equipment, the following aspects should be paid attention to: 1. When producing in soft rock with better dril...

What should do if the drilling tool is covered by Clay soil?

2021.11.15

Mud ring wrapping means that rock dust (chips) adheres to the surface of the drilling tool or the borehole wall to form a mud ring and wrap the drilling tool when the water well drilling rig works. After the mud ring is formed, the annular space becomes smaller and the debris is not smoothly removed and continues to gather at the mud ring to form mud packs, which can completely block the wellbore in severe cases, causing sticking and buried drilling accidents. Reason analysis Stratigraphic factors: micro water gushing and moist formations. The micro water gushing in the formation forms a liquid film on the well wall and makes the rock dus...
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