Diamond bit with large saw-teeth

Abstract

The invention aims to provide a diamond bit with large saw-teeth, which is good in cutting force and durability, high in effectiveness for a given period of time, pipe-sticking avoidance, and good adaptive capacity for weak abrasive formation. The diamond bit comprises a body and drill teeth, wherein the drill teeth adopt a polygonal shape or a convex saw-toothed shape, and are annularly arranged at the top end of the body; and an inclined plane is formed at the top end of each drill tooth.

Description

technical field [0001] The invention relates to a large serrated diamond drill bit for drilling. Background technique [0002] In industries such as mining, coal mining and oil field mining, the drill bits used in geological drilling generally use diamond drill bits, and the diamond particles are attached to the cutting surface of the drill bit by inlaying sintering or electroplating. The whole drill bit has no moving parts and has a relatively simple structure. , with high strength, high wear resistance and impact resistance, is one of the three new technologies of drilling in the world in the 1980s. Field use proves that when drilling in soft-medium hard formations, diamond bits have the advantages of fast speed, more footage, long life, stable work, fewer downhole accidents, and good wellbore quality. The diamond drill bit not only has a long service life, but also can be reused. The diamond drill bit returned to the factory for repair has the same effect as the factory ...

AI Technical Summary

Problems solved by technology

[0003] The tooth-type diamond drill bit commonly used at present is surrounded by a ring of tooth-like protrusions on the top of the drill bit (similar to the shape of the city wall of the Great Wall). When rotating at high speed, it produces a plow-type cutting effect. Still not good enough, with low time efficiency, and poor adaptability to different rock formations; such as hard and dense weakly abrasive formations, the drill bit is easy to slip during the drilling process, fine coal powder is easy to stick, and the timeliness is poor

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