Directional drilling machine drill bit capable of assisting rapid drilling through ultrasonic vibration

Abstract

The invention discloses a directional drilling machine drill bit capable of assisting rapid drilling through ultrasonic vibration. The directional drilling machine drill bit comprises a drill bit body capable of being fixed to the front end of a drill rod in a screwed mode, the drill bit body is of a hollow structure, the front end of the drill bit body is of a multi-claw structure, and each claw tooth is provided with a drill tooth through a mounting base; an ultrasonic actuator is arranged in the front end of the drill bit body and provided with radial extending parts embedded into tooth grooves of the adjacent claw teeth; the ultrasonic actuator is used for converting and amplifying ultrasonic signals generated by an ultrasonic generator through an energy converter and an amplitude transformer and then acting the ultrasonic signals on the rock mass; the ultrasonic generator, the energy converter and the amplitude transformer are arranged through a mounting hole in the middle of the drill bit body; and the ultrasonic generator is of a rechargeable structure of a direct-current power supply and is provided with a remote control unit. The directional drilling machine drill bit has the beneficial effects that the ultrasonic-assisted crack increasing function is achieved; and a power supply and a control line are not needed, the drilling process is safe, the hole forming speed is high, the drilling efficiency is high, and the directional drilling machine drill bit is particularly suitable for long-distance directional drilling in the coal mine industry.

Description

technical field [0001] The invention relates to a hard rock directional drilling tool, in particular to a directional drilling machine bit for fast drilling assisted by ultrasonic vibration. Background technique [0002] At present, the hydraulic fracturing technology in coal mines is a reliable and practical technology for mine gas control. Because the common hydraulic fracturing technology has the characteristics of large drilling volume and high cost, coal mines gradually introduce directional drilling rigs for large-diameter, long-distance drilling construction, and use them as hydraulic fracturing holes, and achieved a The series is better. However, there are corresponding applicable conditions when using directional drilling rigs for long-distance directional drilling. It is required that the hardness of the coal rock layer should not be too small or too large. , The hole forming speed is too slow and the efficiency is too low. [0003] Studies have shown that under...

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Problems solved by technology

Since the power supply line needs to be laid along the drill pipe, the self-generating structure requires a large installation space, neither of which is suitable for long-distance drilling construction of directional drilling rigs in the coal mining industry

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