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<p>Polycrystalline Diamond Compact (PDC) was primarily applied as the cutting element on drill bits for oil and gas exploration and production. To overcome the persistent challenges of excessive vibration, short service life, and frequent failure of PDC drill bits in hard rock formations, this study systematically evaluates the performance of surface textured PDC cutters compared to conventional untextured ones. Experiments were conducted on two representative rock types: sandstone and granite. The results revealed that surface texturing markedly enhanced cutting efficiency and cutter durability. Specifically, when cutting sandstone by textured cutters, the cutting force reduced by 49.48%, single rock breaking volume increased by 20.90%, mechanical specific energy decreased by 15.38%, and the cutting temperature decreased by 4.9%. Even more pronounced improvements were observed in granite cutting, with reductions of 36.53% in cutting force, increased of 31.37% about single rock breaking volume, decreased of 21.82% in mechanical specific energy, and reduction of 7.1% in cutting temperature. Furthermore, Raman spectroscopy indicated that the surface texture modified the stress distribution by increasing beneficial compressive stress and suppressing tensile stress within the cutter structure. These findings provided robust experimental evidence supporting the adoption of surface textured PDC cutters, offered a promising pathway for developing next-generation, high-performance drill bits with extended service life and improved operational efficiency.</p>

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Improving the Rock Cutting Performance of Polycrystalline Diamond Compact Cutters: the Role of Groove-type Surface Texture

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • Yanbo Ding,
  • Tan Lei,
  • Shuai Zhang,
  • Baochang Liu

摘要

Polycrystalline Diamond Compact (PDC) was primarily applied as the cutting element on drill bits for oil and gas exploration and production. To overcome the persistent challenges of excessive vibration, short service life, and frequent failure of PDC drill bits in hard rock formations, this study systematically evaluates the performance of surface textured PDC cutters compared to conventional untextured ones. Experiments were conducted on two representative rock types: sandstone and granite. The results revealed that surface texturing markedly enhanced cutting efficiency and cutter durability. Specifically, when cutting sandstone by textured cutters, the cutting force reduced by 49.48%, single rock breaking volume increased by 20.90%, mechanical specific energy decreased by 15.38%, and the cutting temperature decreased by 4.9%. Even more pronounced improvements were observed in granite cutting, with reductions of 36.53% in cutting force, increased of 31.37% about single rock breaking volume, decreased of 21.82% in mechanical specific energy, and reduction of 7.1% in cutting temperature. Furthermore, Raman spectroscopy indicated that the surface texture modified the stress distribution by increasing beneficial compressive stress and suppressing tensile stress within the cutter structure. These findings provided robust experimental evidence supporting the adoption of surface textured PDC cutters, offered a promising pathway for developing next-generation, high-performance drill bits with extended service life and improved operational efficiency.