A re-manufacturable casing PDC bit and method of manufacture
By designing detachable movable cutter wings and a hollow structure on the PDC drill bit, combined with elastic buffer elements, the problem of drill bit failure due to vibration in casing drilling is solved. This enables the drill bit to be remanufactured and recycled, reduces remanufacturing costs, and improves drilling stability and lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SOUTHWEST PETROLEUM UNIV
- Filing Date
- 2026-06-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing PDC drill bits are prone to failure during drilling due to impact, wear and thermal damage. Furthermore, existing remanufacturing methods suffer from problems such as unreasonable design, difficulty in repair, and high cost. In particular, it is difficult to achieve a synergistic design of recyclability and remanufacturing in casing drilling.
A remanufacturable casing PDC drill bit is designed, which adopts a detachable movable cutter blade and a hollow structure, combined with an elastic buffer element. The hollow structure reduces vibration and buffers energy. The drill bit body is equipped with a hollow structure to reduce vibration transmission. In the drill bit design stage, a reference positioning point and a laser cladding guide groove are preset to achieve precise repair.
Extend drill bit lifespan, reduce remanufacturing costs, improve drilling stability and casing protection, achieve synergistic design of drill bit remanufacturability and recyclability, and ensure the mechanical strength and structural integrity of drill bits during service.
Smart Images
Figure CN122407084A_ABST