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2021-04
Triangular cone drill pipe for coal mine roadway drilling, referred to as triangular drill pipe, triangular drill pipe, anti-collapse drill pipe, anti-lock drill pipe, etc. It is a drill pipe for coal mine drilling made by friction welding with a triangular arc steel pipe with tapered transition as the drill pipe body and a drill pipe joint in the form of thread or triangular, square, hexagonal and other connection forms. The material of the triangular drill is geological drill pipe. The triangular drill pipe body is made of high-quality geological alloy special steel pipe, and the drill pipe joint is made of high-quality medium-carbon alloy structural steel, which is formed by high-pressure treatment and friction welding. The performance advantages of the three-pronged drill pipe in the drilling process, the drill pipe.
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The geological drill pipe adopts advanced friction welding technology for production and processing. The drill pipe has the characteristics of high bending strength and firm welding, which can ensure the straightness requirements for deep hole drilling, and has high fatigue strength and long service life. The geological drill pipe is suitable for geology, hydrology, coalfield, geothermal and engineering drilling. The main products include φ42, φ50, φ60 and φ63.5 geological drill pipes. The main technical indicators of seamless steel pipes for geological drilling strictly implement international standards.
2021-04-19
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Directional drill pipe is mainly composed of four parts: rod body, signal transmission conductor, insulation connection body and positioning device. Directional drill pipe is mainly used for the construction of long directional drilling and water exploration drilling in coal mines, and can also be used for the construction of near-horizontal directional engineering drilling on the ground or in tunnels.
2021-04-19
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2021-04
Where are the cable drill pipes sold? Manufacturers supply cable drill pipes.
The central cable drill pipe, also known as directional drill pipe and measuring drill pipe while drilling, is composed of drill pipe body, conduction device, insulation device and support device. The cable drill pipe is the signal transmission device used in directional drilling, and it is also an important part to ensure the smooth implementation of directional drilling. It is an integrated drill pipe composed of a signal transmission device and a drill pipe. On the basis of a round drill pipe, a central support structure is used to fix and seal the metal wire inside the drill pipe. The plug-in structure is used to realize the connection of the internal wire while connecting with the screw thread. It can transmit the drilling measurement signal in real time and effectively transmit the load of the power head to the drill at the bottom of the hole.
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2021-04
With the drilling measurement on the non-magnetic drill pipe-beneficial mining technology.
The special alloy non-magnetic drill pipe is mainly used in the horizontal directional drilling system of coal mine tunnel, which works reliably. Compared with non-magnetic drill pipe made of beryllium copper, the advantages of special alloy non-magnetic drill pipe are as follows:(1) non-magnetic: it has non-magnetic characteristics, its magnetic permeability is 1.00005-1.0001 H/m under the condition of 20 Oersted, and it will not be magnetized in a very strong magnetic field;(2) Low density: 4.5 × 103kg/m3, 98% lower than beryllium copper;(3) Low elastic modulus: the elastic modulus of beryllium copper is 1.35 × 105MPa, while the elastic modulus of this alloy is 1.17 × 1
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2021-04
Geological drill pipe refers to a kind of geological alloy pipe through a series of processing procedures such as wire high-temperature quenching. It is mainly connected with drilling rig and drilling tool and plays a role in transmitting drilling rig torque. At the same time, most geological drill pipes are hollow structures and can transport all kinds of mud or flushing fluid. In the geological drilling work, it is one of the most commonly used drilling accessories, in the purchase of gold drill geological drill pipe, should pay attention to the commonly used parameters are mainly material, specifications and length. Geological drill pipe 1, material. According to the different types of drilling operations, there are different requirements for the material of geological drill pipes, and the regular DZ4 is selected for ordinary coalfield drilling tasks.
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1. understanding of drill pipe properties. Geological drill pipe is a kind of drilling tool that uses alloy steel pipe to thicken the head at both ends, turn the small pitch taper thread, and connect with the lock joint. It is used in the field of geological exploration, transmits the torque of the drilling rig to the bottom hole bit, and is responsible for transmitting drilling fluid. Common specifications include φ 34*1m, φ 42*1m, φ 50*1m, φ 60*1m, φ 63.5*1m, φ 73*1m, etc. Common connection methods include male and female connection (tapered thread) and joint connection (rectangular internal thread). 2. understanding of the drill pipe material. At present, the national standard materials are DZ40, DZ50, DZ60, R780, etc.
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2021-04
Gas drainage is not only one of the main ways of coal mine gas control, but also the basis of comprehensive utilization of gas (coalbed methane). Underground directional drilling is an effective way to carry out coal mine gas drainage because of its advantages such as controllable drilling trajectory, long effective drainage distance, multi-branch holes and advanced regional centralized drainage, which plays an important role in ensuring coal mine safety production. However, with the increase of the depth and aperture of the directional drilling hole and the complex diversity of the drilling formation, the inherent limitations of the existing sliding directional trajectory control technology and the wired drilling measurement technology gradually appear. In this paper, large diameter/super long near horizontal directional hole and complex formation near horizontal
2021-04-19
