Special drill bit for rotary steering of superhard formation

Abstract

The invention relates to the technical field of deep drilling, in particular to a special drill bit for rotary steering of superhard formations, which comprises a connector, a working main body and a cutting component, the working main body is fixedly connected with the upper end of the connector, and the cutting component is fixedly connected with the working main body; the cutting assembly comprises a cutting block set and a cutting tooth set, the cutting block set is fixedly connected to the outer circle of the working body, and the cutting tooth set is arranged on the cutting block set. A heat conduction cavity, a dry ice function chamber, a flow guide opening set and a heat dissipation hole set are sequentially arranged in the connecting body from top to bottom, a first flow guide opening and a second flow guide opening are oppositely formed in the flow guide opening set at intervals, and a first heat dissipation mesh and a second heat dissipation mesh are oppositely formed in the heat dissipation hole set at intervals. The problems that in the prior art, heat dissipation is not timely in the high-speed using process of a drill bit, and the drilling effect is poor when the drill bit faces a superhard stratum are solved.

Description

technical field [0001] The invention relates to the technical field of deep drilling, in particular to a special drill bit for rotary steering in superhard formations. Background technique [0002] The drill bit is a kind of drilling tool, which is usually used in the demolition operations of hard blocks and land, and sometimes it is also applied to the processing and manufacturing of time-delayed precision molds. The drill bits in the prior art are generally applicable to a single environment. The cutting object is generally of medium hardness, and the heat generated by the high-speed rotation of the drill bit can only be carried out by spraying coolant, which cannot achieve efficient and rapid cooling. [0003] The publication number of the patent that has been published is "CN101310090", and the name is "Earth-boring drill bit with casing part drilling ability, cutting element for the earth-boring drill bit, and method of using the earth-boring drill bit" in China The in...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a special rotary steerable drill bit for super-hard formations, so as to solve the problems in the prior art that the heat dissipation of the drill bit is not timely during high-speed use and the drilling effect is not good when facing superhard formations.

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