Diamond-impregnated bit of arc tooth

Abstract

The invention discloses a diamond-impregnated bit of an arc tooth and belongs to the technical field of bits for drilling. The diamond-impregnated bit of the arc tooth comprises a connector and a bit body connected to the connector. The arc diamond-impregnated tooth is horizontally arranged in a crown zone on the bit body, the arc diamond-impregnated tooth covers a crown contour line of the bit body, and a PDC composite piece is arranged in a heart zone on the bit body. According to the diamond-impregnated bit of the arc tooth, the arc diamond-impregnated tooth is used, the bit and the tooth carry out rotating drilling to form circular well bottom matching, the contact area between the impregnated tooth and a well bottom rock is increased, accordingly, the mechanical drilling speed of well drilling is improved, the diamond-impregnated tooth is arranged on the surface of the bit body so that the bit body cannot be in contact with the well bottom rock, accordingly, the bit body cannot be abraded by the rock, rock breaking efficiency is improved, and the service life of the bit is prolonged.

Description

technical field [0001] The invention relates to a drill bit for drilling used in the fields of petroleum and natural gas, mining engineering, building foundation engineering construction, geology, hydrology, etc., and in particular relates to an impregnated diamond drill bit with arc-shaped teeth. Background technique [0002] The drill bit is a rock-breaking tool used in drilling engineering to break rock and form a wellbore. Impregnated diamond bits are now widely used in drilling production. They have the characteristics of high compression resistance, strong wear resistance, and good impact resistance. They are suitable for drilling difficult to drill for PDC bits and roller cone bits. They have high hardness, Tight conglomerate in highly abrasive formations. [0003] The impregnated diamond bit is to evenly distribute finer diamonds into the bit matrix. This kind of bit is equipped with matrix of different hardness, which can drill into rocks of various hardness, espec...

AI Technical Summary

Problems solved by technology

However, in general, the ROP of impregnated diamond bits is lower than that of roller cone bits and PDC bits, and it needs to be used with downhole power tools (high-speed screw drills or turbo drills), so that the cost of using impregnated diamond bits is too high. high

If high-speed screw or turbo drilling tools are not used, the drilling speed of the impregnated diamond bit will be slower, the rock breaking efficiency will be lower, and the comprehensive economic benefit will be even lower than that of the roller cone bit and PDC bit.

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