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6CCVD Research

Development and Application of Polycrystalline Diamond Compact-Roller Hybrid Bit with Independent Buffer Structure

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2025-05-21
JournalSPE Journal
AuthorsShiwei Niu, Bo Xie, Yutong Li, Kuilin Huang, Chen Lian
InstitutionsSouthwest Petroleum University

Abstract

Section titled ā€œAbstractā€

Summary Improving the operational stability of underground drill bits is essential to preventing premature cutter impact damage and extending drill-bit lifespan. The polygonal effect, resulting from the discontinuous circumferential arrangement of cutting structures with a certain separation between them, is a key factor in drill-bit instability. To address this, we developed a novel polycrystalline diamond compact (PDC)-roller hybrid drill bit featuring an independent buffering structure, based on impact failure analysis. Designed for the fourth section of the Xujiahe Formation in directional drilling and tailored to the geological and drilling requirements of the Ļ†215.9-mm well section, the hybrid drill bit was manufactured, tested in full-scale laboratory experiments, and deployed in the Xujiahe Formation. The results show that the independent buffer structure, with buffer blades positioned between the roller and fixed cutting structures, effectively mitigates the polygonal effect and enhances PDC cutter protection. The hybrid bit exhibits minimal fluctuations in weight on bit (WOB) and torque, reducing torque to one-fifth of that in PDC bits. Field tests achieved a single-run footage of 112 m, a 366.7% increase over conventional PDC bits, and a 48.8% improvement in rate of penetration (ROP). The tool face remained stable during directional drilling, with no ring-out or bearing failure observed post-operation. Significant wear on the independent blade teeth confirmed its ability to absorb and reduce impact forces, underscoring its role in stabilizing the drill bit. This design provides valuable insights for enhancing drill-bit performance in complex formations and structurally challenging wells.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2018 - A Review on the Wear of Oil Drill Bits (Conventional and the State of the Art Approaches for Wear Reduction and Quantification) [Crossref]
  2. 2018 - Hybrid Bit Technology: Transforming Tricone-Bit Drilling to New Levels [Crossref]
  3. 2019 - Hybrid Drill Bit Technology on Performance Motor Bottom Hole Assembly Yields Breakthrough Drilling Performance in Kuwait
  4. 2021 - Hybrid Bit Technology Deployment Yields Breakthrough Drilling Performance & Cost Savings for Operator [Crossref]
  5. 2025 - 28in Hybrid Bit Technology Drilling through Complex Offshore Drilling Intervals [Crossref]
  6. 2023 - Bit Rock Breaking Energy and Rock Adaptive Matching Speed Enhancement Technology
  7. 2023 - Experimental and Numerical Study on the Dynamic Characteristics of Full-Size PDC Bit [Crossref]
  8. 2024 - Dynamic Response and Damage Behavior of Impact Wear for Polycrystalline Diamond Compact under Low Kinetic Energy Impact [Crossref]
  9. 2022 - Design of Adaptive Limiting Tooth Structure for Drill Bit Based on Stick-Slip Vibration Mechanism Research
  10. 2018 - Investigation of PDC Bit Failure Base on Stick-Slip Vibration Analysis of Drilling String System plus Drill Bit [Crossref]

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