Retrofit and Upgrade of Hydraulic Crawler Drilling Rig Directional Drilling Rig
With the rapid development of gas extraction technology in coal industry, as well as the implementation of people-oriented thinking and the proposal of scientific development policy of safety and environmental protection, the harmony and unity of coal mine safety production and comprehensive utilization of energy, coal mine gas extraction work is particularly important. According to the popularization level and technology application maturity of directional drilling rig, combined with the actual situation of the mine, it is completely possible to upgrade the hydraulic crawler drilling rig for general drilling to directional drilling rig and reach the standard of directional drilling rig for construction. On the one hand, it saves the cost of newly purchased equipment, on the other hand, it is fully upgraded into a utility model equipment according to the extraction conditions of the mine, so as to meet the production needs of coal mine units to the greatest extent.
Application Prospect of 1. Directional Drill
The application of directional drilling rig in the field of gas prevention and development is various. The application of directional drilling rig in these aspects can not only greatly reduce the investment cost of gas prevention and development, but also improve the extraction efficiency and improve the safety guarantee ability for coal mine production.
A new type of modern mine, gas occurrence and emission is large, although the current establishment of drainage system, but the use of traditional roadway construction drainage drilling field and drilling methods can not meet the needs of gas prevention and construction of high-yield and high-efficiency mine. The implementation of long borehole gas extraction along the coal seam is of great significance to reduce the amount of roadway excavation, reduce the amount of drilling work, shorten the preparation time of the working face, extend the gas drainage time, improve the gas drainage rate, alleviate the tension contradiction between the extraction and mining, reduce the cost of tons of coal, and improve the safety production capacity of the mine.
Advantage Analysis of 2. Directional Drilling Rig
Directional drilling rig has the characteristics of large drilling depth and large control extraction area; good guiding performance and strong adaptability, which can avoid drilling subsidence and construction curve drilling, and can effectively pass through geological structure area; There are various ways to arrange holes in coal seam; When drilling, the drill pipe does not move, only the drill bit rotates, which can well maintain the integrity of drilling, reduce hole collapse factors, and improve the hole formation rate of coal seam drilling. General drilling with ordinary hydraulic crawler drilling rig is not enough to achieve such a technology, it is with the weight of the drill will sink. Drilling until the drill does not move, there is no directional flexibility and convenience.
Through the upgrading of the general drilling hydraulic crawler drilling rig, the drilling track can be monitored in real time, the drilling direction can be adjusted, and the working efficiency of the drilling is not greatly affected. The change of the drilling track can be monitored in real time during the whole drilling process, and the invisible can be changed into visible. The drilling track can be artificially changed, and the uncontrollable becomes controllable. The directional transformation is of great significance to the construction process of drilling, which makes the ordinary drilling machine achieve the function of directional drilling machine at a small cost.
