Diamond bit

Abstract

The invention relates to the technical field of diamond bit drilling, in particular to a diamond bit. The diamond bit comprises a drill bit steel body, a drill tooth segment arranged on the upper endof the drill bit steel body and a threaded connecting pipe segment arranged on the lower end of the drill bit steel body, the drill tooth segment comprises an integral annular end and fan-shaped endsevenly arranged on the top of the annular end, the left side faces of the fan-shaped ends are correspondingly provided with round drill blocks, the bottom of the annular end is uniformly provided withchip discharge outlets, the top of the drill bit steel body is provided with a top separating block which includes an annular block and an upper convex block matched with the inner wall of the annular block, the top of the upper convex block is provided with an impact water hole, the middle of the upper convex block is provided with a circle of round drilling block flushing holes, and the lower end of the upper convex block is provided with a circle of debris punching holes. The diamond bit can increase the number of drill teeth, ensure that the debris on the drill teeth is washed out in a timely and efficient manner, drill cuttings contained in the bit are discharged efficiently at the same time, and effective impact softening is conducted on a formation.

Description

technical field [0001] The invention relates to the technical field of diamond drill drilling, in particular to a diamond drill. Background technique [0002] The drill that makes the cutting edge is called a diamond drill. The drill bit is a one-piece drill bit. The whole drill bit has no moving parts and has a relatively simple structure. It has high strength, high wear resistance and impact resistance. It 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 diamond drill bit, which can save a lot of drilling costs. The existing diamond drill bits mainly have the following def...

AI Technical Summary

Problems solved by technology

The existing diamond drill bits mainly have the following deficiencies: (1) In order to cooperate with the discharge of cuttings, the number of drill teeth arranged on the outer ring is limited, which affects the drilling efficiency to a certain extent; The flushing force of debris is limited, which cannot meet the requirements of efficient drilling; (3) The water hole has a single effect and can only be used to wash away debris or impact the formation

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