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22
2021-05
Sad | | Yuan Longping, father of hybrid rice, died
Sad | | Yuan Longping, father of hybrid rice, died
2021-05-22
14
2021-05
The through-cable drill pipe is the main component of the directional drilling measurement system, and the through-cable drill pipe for directional drilling is composed of the drill pipe body and the through cable, and the drill pipe body and the through cable form a complete signal channel.
2021-05-14
14
2021-05
The measurement while drilling drill pipe is mainly used in directional horizontal drilling in coal mine roadway. It is used in conjunction with the orifice display device to display the drilling trajectory data in real time. The operator can adjust the drilling trajectory direction in time according to the display data, so as to achieve the purpose of directional drilling. Widely used in mining, coal, oil, water conservancy and other industries of directional drilling control. 1. product features:(1) the drill pipe body is welded by friction welding process, the drill pipe has good overall mechanical properties and long service life (2) the drill pipe joint has high thread strength and good anti-galling performance (3) the drill pipe is designed with signal transmission device, which can realize the hole bottom measurement probe and orifice explosion-proof computer
2021-05-14
14
2021-05
Cable drill pipe-directional drilling-beneficial mining technology.
Directional Drilling Technology Introduction Directional drilling is a drilling method that uses the natural bending law of the borehole or uses artificial whipping tools to extend the borehole to the intended target according to the design requirements. It can also be explained by the technology and science of drilling to reach a predetermined subsurface target and deflect the borehole in a specific direction. Directional drilling technology is one of the most advanced drilling methods in the world at present. It has GDS guiding system, which can drill to the designated position according to the pre-designed drilling trajectory through the computer monitoring outside the hole. This has an unparalleled impact on gas drainage, gas layer development, emergency rescue, detection and discharge of goaf water and geological structure.
2021-05-14
14
2021-05
The use and maintenance of the cable drill pipe-beneficial mining technology.
The cable drill pipe is the signal transmission device between the hole bottom inclinometer unit and the hole inclinometer equipment, and is an important supporting drilling tool to ensure the smooth implementation of directional drilling, mainly used in coal mine underground directional drilling, coal mine underground rotary drilling and other geological controlled directional drilling conditions. The signal transmission mode of the MWD system is divided into wired (cable) and wireless. As a wired (cable) transmission mode, the central through-cable drill pipe can directly supply power to the hole bottom sensor to realize two-way communication between the hole bottom and the orifice equipment, with good real-time performance and high data transmission rate. At the same time, the central cable drill pipe solves the problem of the connection between the cable and the drill pipe of the previous product and the cable.
2021-05-14
14
2021-05
73 Double-wall spiral sampling drill pipe-beneficial mining technology.
In the normal drilling process, it is preferred to use ordinary water braid for drilling. At this time, the inner wall and outer wall channels of the drill pipe are ventilated at the same time. In the drilling process, it can effectively prevent excess cinder from entering the inner wall of the drill pipe through the middle channel. When drilling to the designated position, it is replaced with a reverse circulation dust sampling water tail device, and the outer wall is continuously supplied with air. The air is discharged through three ventilation channels around the double-wall around the drill bit, in the confined space, return the pulverized coal to the inner wall of the double-walled drill pipe through the ventilation hole in the middle of the drill bit. Through continuous air supply, the cinder will continue to flow back until it flows into the dust box through the water braid. At this time, the fixed-point sampling is completed. Deep hole quick take
2021-05-14
11
2021-05
Coal Mine Roadway Crawler Slag Loader Introduction-Yiguang Technology
Our company's latest research and development and production of coal mine roadway crawler slag loader (referred to as slag cleaning machine), is our company's latest patented products, the equipment is 2.4m long, 1m wide and 1.8m high. The structure is compact and has strong passability. It is widely applicable to slag and coal cinder produced in excavation and drilling construction of tunneling roadways and bottom pumping roadways in tunnel engineering. It is automatically collected and transferred to tramcar or conveyor belt to realize efficient removal and transfer construction. Coal mine roadway crawler-type slag loader adopts independent explosion-proof power supply and full hydraulic power system configuration to realize the action execution of each power unit and crawler walking. Slag collection shovel plate on the basis of up and down adjustable, using
2021-05-11
11
2021-05
Our company has developed and produced the latest mechanical hole-making equipment for coal mines in view of the actual situation that the pressure relief control of roadway pressure relief control, gas drainage control and other projects is difficult and the gas drainage control efficiency is low. Coal mine mechanical hole making equipment is our company's invention patented product, patent number: CN 202010922779.8, CN 202010890623.6, the equipment adopts the hydraulic mechanical ejector control principle, is widely used in coal mine roadway rock layer hole making hole pressure relief, coal mine soft rock hole reaming support, rock burst control and cutting top pressure relief, as well as high gas soft coal seam gas prevention hole bottom
2021-05-11
