Enhancing the Wear Resistance of Drill Bits through the Improvement of Composite Diamond-Containing Elements

Abstract:

This study presents the development of an advanced 215.9 mm drill bit with an optimized material distribution to enhance wear resistance, durability, and operational efficiency in highly abrasive formations. A comprehensive scanning electron microscopy (SEM) analysis of the powders used in the drill bit's construction was conducted using the TESCAN Mira 3 LMU system. The analysis included tungsten carbide–cobalt (WC–Co) and diamond-containing composite powders. The results revealed that WC–Co powders exhibit high density and uniform particle distribution, making them suitable for load-bearing components, while diamond-containing powders ensure superior cutting performance and wear resistance. Based on these findings, a rational material allocation was implemented: WC–Co-based materials were used for structural elements, and diamond-containing powders were applied in cutting and undercutting inserts. Process was optimized to prevent thermal degradation of the polycrystalline diamond compact (PDC) inserts. The developed drill bit was designed for rotary drilling with an axial load range of 20–80 kN, rotation speeds of 80–250 rpm, and a drilling fluid flow rate of up to 40 L/s. The proposed design is particularly suited for the geological and technical conditions of Kazakhstan’s oil and gas fields, contributing to reduced drilling costs and increased efficiency.

• Periodical: Advances in Science and Technology (Volume 172)
• Pages: 97-112
• DOI: https://doi.org/10.4028/p-hZo6Um
• Online since: January 2026
• Authors: Volodymyr Khomenko*, Akshyryn Zholbassarova, Zhanna Kenzhegaliyeva, Zamanbek Utepov, Abat Zhailiyev
• Keywords: Chromium Diboride, Cobalt, Composite, Diamond, PDC Drill Bit, Tungsten Carbide

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