Multifunctional high-pressure water jet-PDC tooth combined rock-breaking experiment drill bit

Abstract

The invention provides a multifunctional high-pressure water jet-PDC tooth combined rock-breaking experiment drill bit. The drill bit comprises a drill bit body and clamping devices. A plurality of clamping device installation grooves are formed in the upper end face of the drill bit body, the clamping devices are installed in the clamping device installation grooves respectively, the clamping devices are detachably provided with cutting teeth, and the relative angles and the positions of the clamping devices and the installation grooves are adjustable. Rock breaking behaviors and efficiency of individual teeth and the drill bit under different teeth distribution modes can be researched, the use efficiency of the drill bit is improved, and the experiment cost is reduced. Nozzles can be detached, whether jet nozzles are installed or not can be determined according to requirements, and jet flow channels at different angles are machined in different nozzles, so that efficiency during rock impacting and rock debris carrying relative to different jet angles of tooth pieces is researched. The jet flow channels are machined in the two sides of each tooth piece on the drill bit body respectively, so the nozzles can be installed at different relative positions of the tooth pieces to research the influence of the PDC tooth and water jet relative position matching relationship on rock breaking.

Description

technical field [0001] The invention relates to the field of drilling experiment equipment, in particular to a multifunctional high-pressure water jet-PDC tooth combined rock breaking experiment drill bit. Background technique [0002] As a rock-breaking tool commonly used in the drilling industry, the performance of the drill bit and whether it matches the drilling parameters directly affect the drilling cost and drilling quality. PDC bit (Polycrystalline Diamond Compact Bit, polycrystalline diamond compact bit) is a new type of drilling tool developed with the development of PDC composite materials. The PDC bit uses the artificial polycrystalline diamond composite sheet as the cutting element to break the rock by cutting, which is the reproduction of the drag bit under the advanced technical process conditions. The PDC bit is self-sharpening, and the average ROP is often 2 to 3 times that of the roller cone bit; since there are no moving parts, the risk of the roller cone...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the cutting teeth of the existing drill bit cannot be disassembled and cannot be adjusted, the present invention provides a multifunctional high-pressure water jet-PDC tooth combined rock-breaking experimental drill bit, the multi-functional high-pressure water jet-PDC tooth combined rock-breaking experimental drill bit The cutting teeth can not only be disassembled and replaced, but also its position and angle can be adjusted. It is suitable for studying the rock-breaking behavior and efficiency of individual teeth and different tooth arrangement methods, which increases the use efficiency of the drill bit and reduces the cost of experiments.

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