A stuck drill disposal device

By using a stuck drill bit treatment device that incorporates a semi-circular ring and an extension tube on the outer wall of the drill bit, combined with physical and chemical methods, the problem of stuck drill bits has been solved, achieving efficient unsticking and protecting the drill bit. This device is suitable for directional drilling on the surface.

CN224452726UActive Publication Date: 2026-07-03SINOHYDRO BUREAU 6 CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SINOHYDRO BUREAU 6 CO LTD
Filing Date
2025-09-05
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In surface directional drilling, drill bit jamming often leads to construction interruption, which is difficult to handle effectively with existing technology and can easily cause drill bit damage.

Method used

Design a stuck drill bit handling device, including a semi-circular ring and an extension tube sleeved on the outer wall of the drill bit, equipped with a metal hose and a stuck agent, to handle stuck drill bits through a combination of physical assistance and chemical dissolution, and to ensure accurate delivery of the agent by using a counterweight and ball bearing structure.

Benefits of technology

It improves the utilization rate and reaction efficiency of the anti-sticking agent, avoids drill bit damage, has a simple structure that is easy to implement on site, and is compatible with existing drilling equipment.

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Abstract

This utility model discloses a stuck drill bit handling device, including a drill bit. A first semi-circular ring is symmetrically fitted onto the outer wall of the drill bit. The inner ring wall of the first semi-circular ring and the outer wall of the drill bit are in clearance fit. A counterweight is symmetrically fixedly connected to the side wall of the first semi-circular ring. An extension tube is fixedly connected to the inner cavity of the counterweight. A thread is formed on the top of the inner ring wall of the extension tube, and a flexible metal hose is threaded to the threaded part of the inner ring wall of the extension tube. When a stuck drill bit occurs during drilling, the core of this device is to handle the stuck drill bit through a combination of physical assistance from the semi-circular ring and chemical dissolution, significantly improving the utilization rate and reaction efficiency of the unsticking agent. Furthermore, the semi-circular ring and extension tube have a simple structure, are compatible with existing drill bits, require no major modifications to the drilling equipment, and are easy to implement on-site.
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