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The Experimental Study on High-Matrix Impregnated Diamond Bit

Author: TanGang
Tutor: LiGuoMin
School: Chinese Geology University (Beijing)
Course: Geological Engineering
Keywords: High carcass drill Renewable outlet Tilt-shift Graphite mold
CLC: P634.41
Type: Master's thesis
Year: 2010
Downloads: 202
Quote: 1
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Abstract


With the development of modern society, geological prospecting drilling is toward the development of deep and ultra-deep direction. In construction, from the drill and extract core auxiliary work accounted for 70% of drilling time, resulting in inefficient drilling, the rope core technology is a good way to solve this problem, but the short life of the drill bit restricting this process play . The traditional method of improved drill life, limited in the extent of the advancement of drill life, while the high carcass drill is to increase the life of the drill bit by increasing the length of the drill carcass, can significantly improve the life of the drill bit. The paper in order to verify the high carcass multilayer renewable outlet drill is feasible to design the mold firing the three renewable outlet drill, outlet hidden by a layer of a dew mouth and two outlet composition, greatly increasing the height of the fetal head, equivalent to three ordinary diamond drill life expectancy may be three times that of ordinary drill, in the drilling, the first layer outlet as a work nozzle, along with the wear of the first layer of the outlet of the second layer at the outlet in closure materials advance wear, forming outlet to continue drilling. Through renewable outlet drill conducted indoor tests prove concealed outlet can wear in advance, renewable drill outlet, that this idea is feasible. Improve the design after the experiment was a success, there are some problems of graphite mold, improved design, making the assembly more convenient. Cone bit drill outlet applications shift shaft principle bias design, improve the feasibility of closure work the graphite wear and tear shedding, and change drill Rock Fragmentation Mechanism, can take advantage of the shear force to shear rock ridge, greatly increasing the volume of broken possibility of rock. The high carcass impregnated diamond bits Research significance of magnitude compared to the increase in life compared to the traditional choice of good quality diamond, a reasonable concentration optimize carcass formulations, design heterosexual lip surface drill more obvious, but also with those used in combination with the further growth of drill life. High carcass drill can be good efficiency and long life combined, a multi-storey renewable the outlet high carcass drill the equivalent of two or more traditional drill, can exponentially increase bit life, and does not change for a long time the drill significant savings need to replace the drill bit Drilling and other auxiliary tripping time, together with a rope core drilling, can be a substantial increase in drilling deep holes when drilling efficiency, reduce production time and costs, are better able to for production and construction services.

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CLC: > Astronomy,Earth Sciences > Geology > Geology, mineral prospecting and exploration > Drilling Project > Drill bits,drilling tools > Drill
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