Steel body type diamond-impregnated bit

Abstract

The invention relates to a steel body type diamond-impregnated bit, and belongs to the field of boring tools. The steel body type diamond-impregnated bit is composed of an impregnated body, a bit body and a joint, wherein the bit body is a steel body type bit body; a blade, a nozzle and a flow channel are processed on the steel body type bit body, and the impregnated body is arranged on the blade and exposed; the steel body type diamond-impregnated bit is characterized in that the impregnated body and a cutting material have dual rock breaking functions of shearing fracture and plough cutting; the whole intensity of the steel body type bit body is high, the steel body type bit body is beneficial to developing the large-size steel body type diamond-impregnated bit, designing a long blade and a deep chip groove and increasing the height of the impregnated body; the wearability of the steel body type bit body is poor, the impregnated body is easy to expose, the mechanical drilling speed and drilling footage are increased, the cost of the steel body type bit body is lower than that of a fetal body, and the bit cost is greatly reduced; the impregnated body is manufactured through a hot pressing agglomeration technology, the quality is better, the drilling footage is improved, and the cost is reduced through serialization; and an impregnated body and steel body type bit body fission type structure is beneficial to form an industry group and accelerating research and development and the updating speed.

Description

technical field [0001] The invention belongs to the field of drilling tools, and is particularly suitable for drill bits used in petroleum and geological drilling. Background technique [0002] The existing matrix-type impregnated diamond bit has the advantages of faster ROP and higher footage in difficult-drill formations, and is being used more and more widely. Because the matrix-type impregnated diamond drill bit generally adopts the overall sintering manufacturing process, the structure of the drill bit is complicated, and it is difficult to develop a large-size drill bit and use hot pressing to improve the quality of the drill bit. The cost of the drill bit is high, and the replacement is slow, which limits the further improvement of the quality. Contents of the invention [0003] The object of the present invention aims at the problems existing in the prior art, and provides a steel body type impregnated diamond drill bit with high overall strength, large size, long...

AI Technical Summary

Problems solved by technology

Because the matrix-type impregnated diamond drill bits generally adopt the overall sintering manufacturing process, the drill bit structure is complex, it is difficult to develop large-size drill bits and use hot pressing to improve the quality of the drill bit

The cost of the drill bit is high, and the replacement is slow, which limits the further improvement of the quality

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