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11
2022-04
Formation Principle and Influence of Directional Drill Pipe -- Yikuang Science and Technology
The formation principle and influence of directional drill pipe near horizontal directional drilling technology is an advanced technology in the field of drilling engineering. It is applied to coal mines and started in the western developed countries such as the United States, Germany and Britain in the 1960 s and 1970 s. Many coal mines in my country, such as Songzao, Tiefa, Huainan, Shanxi Yamai Daning, etc., also introduced this technology in the mid-1990s. At present, China's coal mines are widely used in directional drilling technology for the screw motor oblique supporting wired drilling measurement system. This technology is mainly used in underground rock formations and more stable coal seams because of its high precision, long distance and construction flexibility.
2022-04-11
11
2022-04
The Cause of Remanence of Directional Drill Pipe -- Yikuang Science and Technology
Analysis of the causes of remanence caused by directional drill pipes The reasons for remanence caused by directional drill pipes are as follows:(1) metal melting or pipeline manufacturing process;(2) The pipeline is stopped in a strong magnetic field;(3) Non-destructive testing by magnetization method;(4) Preheating the weld joint by electromagnetic induction method and heat treatment to produce remanence;(5) Cutting lathe grinding wheel grinding groove;(6) The axis is consistent with the direction of the geomagnetic field and is magnetized by the geomagnetic field due to impact or vibration. The article is reproduced from the Internet, if there is infringement, please contact delete.
2022-04-11
08
2022-04
Yi Mine's "Place Code" is on line. Everything you want to know is here.
The current situation of the new coronary pneumonia epidemic is grim and complex in order to comprehensively do a good job in the normalization of the epidemic precision prevention and control work in the city to promote the use of epidemic prevention "place code" to ensure the safety of the people's lives and health on the place code, small compilation of the following common questions and answers hope to help you what is the place code? Shandong place code (hereinafter referred to as "place code") is a proprietary two-dimensional code used by citizens to enter the key places in Yuncheng City, is the new crown pneumonia epidemic prevention and control normalization, precision, information-based important measures, through scanning code records can quickly trace the relevant personnel activity track and close contact personnel, to avoid the spread of the epidemic. Place Code and Health
2022-04-08
07
2022-04
Have you ever used these drill pipe and drill bit fishing methods?
In the process of large-diameter pile foundation construction of rotary excavators, accidents of hole collapse and burying and holding occur from time to time, but the causes, accident conditions and site conditions of rotary excavators are not the same, so the measures taken are not the same, and sometimes several treatment methods may need to be used. The editor focuses on the treatment method of buried drilling, and describes the processing tools in detail, hoping to communicate with peers. After the burying or holding accident, the mud performance shall be adjusted in time to control the further expansion of the accident, and the causes shall be analyzed in time to take corresponding measures, so as not to miss the best treatment time. The treatment of buried drilling can be summarized as "cleaning, penetrating, topping, frying, expanding,
2022-04-07
07
2022-04
Sending grief during the Qingming Festival, the fragrance of flowers curl up in old friends
Sending grief during the Qingming Festival, the fragrance of flowers curl up in old friends
2022-04-07
07
2022-04
The Role of Cable Drill Pipe in Downhole Directional Drilling
The Role of Cable Drill Pipe in Downhole Directional Drilling
2022-04-07
07
2022-04
What are the characteristics of deep hole drilling vehicles for coal mines
What are the characteristics of deep hole drilling vehicles for coal mines
2022-04-07
17
2022-03
Scientific epidemic prevention | | epidemic repeated do not relax
Scientific epidemic prevention | | epidemic repeated do not relax
2022-03-17
14
2022-03
Coal mine crawler full hydraulic hole drilling rig-beneficial mining technology.
The main advantages of crawler-type full hydraulic hole-making drilling rig for coal mines are as follows: 1. It adopts hydraulic mechanical control, uses static pressure water, and can complete hole-making without high-pressure pumping station; 2. It can be used for different geological conditions such as rock strata with f<6, and has a wide range of applications, which can meet the requirements of rock roadway hole-making pressure relief and coal seam hole-making construction; 3, greatly improve the success rate of the hole-making project; 4, the construction cost is reduced comprehensively, and the construction efficiency is more than doubled.
2022-03-14
14
2022-03
Mechanical hole drilling rig-beneficial mining technology.
Mechanical hole reaming construction process and measures 1. Construction pilot hole. In strict accordance with the basic principles of "lower pad, upper pressure, front support, rear roof" to stabilize the drilling rig and minimize the vibration generated during drilling. First, use the diamond composite chip drill bit to construct the pilot hole. After the pilot hole is drilled to the design depth, exit the drill pipe and record the key drilling data such as hole depth, coal seam depth and coal seam roof depth. 2. Reaming. Use the diamond composite drill bit for reaming, reasonably control the wind pressure and air volume during the drilling process, grasp the feed pressure and the drilling speed of the diamond composite drill bit, reduce the sediment through decompression and speed reduction, and improve the drilling hole rate.
2022-03-14
