Novel special-gap high-torsion-resistance core-remaining drilling tool
By designing annular steps and negative angle threads on the drill rod male joint of the drill tool, the existing drill tool is easily unstable under large torque, and the effect of high torque resistance and anti-tacking is achieved.
CN119711955APending Publication Date: 2025-03-28NANTONG YONGDA PIPE IND
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Patent Information
- Application Number
- CN202411679231.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
Existing drill tools are prone to problems such as unstable fastening, sticky buckles, and buckles when used for large torque, resulting in unstable use.
Method used
A new special clearance high-torsion core drilling tool was designed. By opening an annular step on the male joint of the drill rod, the contact area with the female joint is increased, the pressure per unit area is reduced, and a negative angle is formed when the internal and external threads are subjected to stress to prevent the clamping.
Benefits of technology
It achieves the effects of high torsion resistance, anti-stick buckle, anti-swell buckle and anti-slip buckle, and improves the stability and durability of the drill tool.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of drilling tools, in particular to a novel special-gap high-torsion-resistance core-remaining drilling tool which comprises a drilling rod body, the drilling rod body comprises a drilling rod pipe body, a drilling rod female connector is arranged at one end of the drilling rod pipe body, and a drilling rod male connector is arranged at one end of the drilling rod pipe body; the third annular step is arranged on the male connector of the drill rod, so that the contact area of the male connector and the female connector corresponding to each other can be increased, and the pressure intensity per unit area is reduced; similarly, negative angles are formed when the internal threads and the external threads of the female connector and the male connector are stressed, the anti-thread-gluing effect is also achieved, and the anti-torsion anti-thread-gluing anti-expansion anti-slip connector has the advantages of being high in anti-torsion effect, anti-thread-gluing effect, anti-expansion anti-slip effect and the like.
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