Internal flush water-proof expansion-end-proof drill pipe

Abstract

The invention discloses an internal flush water-proof expansion-end-proof drill pipe and relates to the field of drilling tools. The internal flush water-proof expansion-end-proof drill pipe solves the problems in the existing drilling that a connection position of drill pipes leaks and expansion ends of the drill pipes are prone to happen and the like. The internal flush water-proof expansion-end-proof drill pipe comprises a drill pipe body, female heads at two ends of the drill pipe body and a drill pipe body middle shaft channel. A water-proof protrusion is arranged at the outer end of each female head of each end of the drill pipe body, outer walls of the water-proof protrusions are parallel to inner walls of the water-proof protrusions, and included angles between the end walls of the water-proof protrusions and the drill pipe body middle shaft channel are 60 degrees. The internal flush water-proof expansion-end-proof drill pipe is simple in structure, convenient to operate, easy to install and good in sealing effect and does not waste water resource.

Description

technical field [0001] The invention relates to a drilling tool, in particular to a waterproof and swollen-proof drill pipe with an inner flat buckle. Background technique [0002] The drill bit on the drill pipe plays an important role in the drilling process, but the drill bit is prone to high temperature due to high-speed operation and friction with hard objects during drilling. Continuous water injection is used to reduce the high temperature generated when the drill bit is running at high speed. At present, the connection between the drill pipe and the drill pipe is generally connected by a rectangular thread. Due to the structural shape of the rectangular thread itself, there is a certain gap between the thread of the drill pipe and the drill pipe. The water will easily flow out from the gap between the drill pipe and the thread of the drill pipe. At the same time, when the drill pipe torque is large, it will cause the end face of the drill pipe to swell, which will a...

AI Technical Summary

Problems solved by technology

At present, the connection between the drill pipe and the drill pipe is generally connected by a rectangular thread. Due to the structural shape of the rectangular thread itself, there is a certain gap between the thread of the drill pipe and the drill pipe. The water will easily flow out from the gap between the drill pipe and the thread of the drill pipe. At the same time, when the drill pipe torque is large, it will cause the end face of the drill pipe to swell, which will affect the drilling construction, especially for the water reaching the drill bit when the drilling is deep. The slow speed is not conducive to the cooling of the drill bit, and even no water can reach the drill bit so that the drill bit cannot be cooled and damaged, and even the drill pipe and the swollen head of the joint are deformed and the drill pipe cannot be replaced; this is undoubtedly a waste of material and waste. Water resources, increase the production cost of enterprises

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