PDC异形齿破岩研究与应用进展

Research and application progress of special-shaped PDC cutters in rock breaking

摘要:

PDC齿作为切削单元，决定了PDC钻头的破岩性能，不同齿形的PDC钻头对钻井提速和使用寿命影响较大。通过优化PDC齿的结构和材料性能，可显著提高钻头的破岩效率和耐用性。近年来，随着材料科学、制造技术和数值模拟的进步，PDC异形齿在钻井提速方面取得了较好的应用效果。本文总结了异形齿破岩机理、布齿设计以及现场应用等方面研究进展，并给出下一步发展建议，以期为后续PDC异形齿选型和钻头设计提供有益参考。

Abstract:

The influence of different polycrystalline diamond compact （PDC） cutter geometries on drilling efficiency has drawn significant research attention. Substantial improvements in rock-breaking efficiency and bit durability can be achieved through optimization of cutter structural design and enhancement of material properties. Recent advancements in materials science， manufacturing technology， and numerical simulation have facilitated notable progress in the application of non-planar PDC cutter geometries for drilling efficiency. This paper systematically reviews research advancements in rock-breaking mechanisms， cutter layout design， and field applications of special-shaped cutters through experimental and numerical investigations. Furthermore， it proposes recommendations for future development directions， aiming to provide valuable insights for enhancing PDC drilling performance. The comprehensive analysis integrates fundamental mechanisms with practical engineering considerations， offering a scientific framework for optimizing cutter configurations in the challenging formation drilling scenarios.