关键词: PDC 复合片, PDC 钻头, 切削齿, 钻头设计, 钻头制造, 发展趋势

Abstract: This paper briefs about the present status of PDC bit technology both at home and abroad in terms of PDC cutter, bit structure, bit design and manufacturing. It points out that PDC bits dominate the drill bit market and improvement, and the innovation of cutters is the main direction of drill bit research and development with a trend of diversification and integration of bit structure, emphasis of customed design and enhanced parameter drilling. Application cases are presented, including one-trip drilling of horizontal wells. PDC bits have remarkablely increased ROP and reduced drilling cost, and helped to efficiently develop unconventional oil and gas resources, continually decresaed the drilling days of deep wells, and refreshed drilling records. Future intelligent drill bits will improves the penetration of reservoirs. The new-generation drill bit will promote application of super one-trip drilling of horizontal wells. Meanwhile, the paper analyzes CNPC’s current status of PDC bit technology and comes up with the relative suggestion on the development of PDC bits.