Drill rod provided with centralizing assembly and suitable for multi-caliber drilling
By installing a straightening assembly with a sleeve and a large-diameter joint on the drill pipe, the problems of waveform bending and fatigue damage of the drill pipe under large clearance conditions are solved, thereby improving the stability and safety of drilling.
CN224396410UActive Publication Date: 2026-06-23襄阳地质工程勘察院有限责任公司
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Patent Information
- Application Number
- CN202521359820.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-23
- Estimated Expiration
- 2035-06-30
AI Technical Summary
Technical Problem
In hydrogeological exploration, drill pipes are prone to wave bending and fatigue damage under large gap conditions, leading to frequent breakage and affecting drilling efficiency and safety.
Method used
Design a drill pipe with a centering component, including a sleeve and a coarse-diameter joint, to limit drill pipe sway through multi-point support and reduce alternating stress damage. The nylon sleeve reduces friction, and the steel coarse-diameter joint improves connection strength.
Benefits of technology
It effectively suppresses drill pipe bending deformation, reduces the risk of breakage, improves borehole stability and safety, and enhances the reliability of drilling operations.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model provides a drill rod provided with a centralizing assembly and suitable for multi-caliber drilling, the drill rod provided with the centralizing assembly and suitable for multi-caliber drilling comprises a plurality of drill rod sections and the centralizing assembly, the centralizing assembly is arranged at the joint of two adjacent drill rod sections, the centralizing assembly comprises a sleeve and a thick-diameter joint, and the thick-diameter joint is connected with the sleeve. The large-diameter joint is fixedly connected with the two adjacent drill rods, the sleeve is arranged above the large-diameter joint and arranged on the drill rods in a sleeving mode, and the outer diameter of the sleeve is larger than that of the large-diameter joint. According to the drill rod provided with the centralizing assembly and suitable for multi-caliber drilling, the centralizing assembly is arranged to limit movement of the drill rod, the swing amplitude of the drill rod can be effectively reduced, and therefore the drill rod is prevented from being bent in a wave shape in a drilling hole, the probability of rod breakage is reduced, and construction safety is improved.
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