A kind of ultra-high fit and low resistance drill bit

Abstract

The invention belongs to the technical field of drilling tools, and specifically relates to an ultra-high-fit low-resistance drill bit, including a mounting rod, a No. 1 drill bit and a No. 2 drill bit; the lower end of the mounting rod is fixedly connected to a No. 1 drill bit; It is capsule-shaped, and the lower end of the No. 1 drill bit is slidingly connected to the No. 2 drill bit through a spring; the lower end of the No. 2 drill bit is conical, and the lower edge of the No. The two ends of the upper surface are symmetrically fixedly connected with fixed rods; the fixed rods can be plugged into the lower end of the No. 1 drill bit; the protection of the No. 1 drill bit can be realized by setting the No. 1 drill bit and the No. 2 drill bit. If damage occurs, only Replacing the No. 2 drill bit greatly saves the cost of use; the present invention is mainly used to solve the problem that the drill bit in the prior art has great damage to the drill bit when drilling holes in the stone, and cannot guarantee the smoothness of the cutting surface and requires post-processing.

Description

technical field [0001] The invention belongs to the technical field of drilling tools, in particular to a super-high-fit low-resistance drill bit. Background technique [0002] The drill bit is the main component of drilling equipment, and its main function is to break the rock and form a wellbore. The rotary drill bit is a drill bit commonly used in the petroleum industry at present. Driven by machinery, the rotary drill bit will rotate, thereby driving the entire drill bit to produce a centripetal movement, and through cutting and grinding, the rock will be cracked and broken, and it will play a role in drilling down. effect. The drill bit is one of the main drilling equipment. According to the different working environment and regional environment, the specifications and shapes of the drill bit should also be different. When carrying out oil drilling work, it should be based on specific needs and specific design plans. Choose the drill bit scientifically. In the specif...

AI Technical Summary

Problems solved by technology

[0003] In order to make up for the deficiencies of the existing technology, the invention proposes a super-high-fit low-resistance drill bit. The invention is mainly used to solve the problem that the drill bit in the prior art has a large damage to the drill bit when drilling a stone, and cannot guarantee The smoothing of the cut surface requires post-processing

Images