石油钻采工艺2025，Vol.47Issue(6)：712-719,756,9.DOI:10.13639/j.odpt.202507005
基于全尺寸台架实验评价的异形齿优选及应用分析
Optimization and application analysis of special-shaped cutters based on full-scale bench experimental assessment
摘要
Abstract
The irregularly shaped cutter technology can effectively address the challenges of rock breaking and rate of penetration(ROP)enhancement in deep hard formations.The key to this technology lies in optimizing the selection of irregularly shaped cutters suitable for the target formation and operational conditions.This paper establishes a comprehensive method for selecting irregularly shaped cutters,which takes into account both the aggressiveness and reliability of the cutters during drilling in specific formations and under specific operational conditions.Additionally,a laboratory evaluation method for full-scale bit rock-breaking effectiveness has been developed,and the validity of the cutter selection results has been verified through field applications.Experimental results show that the optimized PDC bit significantly reduces the risk of cutter damage when drilling igneous rocks.The combined effect of the axe-shaped cutter's aggressive structure and dispersion mechanism substantially lowers the bit torque level,while the ROP increases by up to 59%.Field applications demonstrate that,compared to the last drilling run in the same formation,the bit optimized using the selection method proposed in this study achieved an average ROP improvement of 191.43%.This method enhances the adaptability of PDC bits to the formation and operational characteristics of target wells,providing technical support for improving rock-breaking efficiency and ROP in deep hard formations.关键词
异形齿/PDC钻头/钻井提速/全尺寸实验/深部地层Key words
irregular cutter/PDC bit/ROP improving/full scale experiment/deep formation分类
能源科技引用本文复制引用
PEI Xueliang,LI Cheng,CAO Jifei,SUN Jianxiang,ZOU Deyong..基于全尺寸台架实验评价的异形齿优选及应用分析[J].石油钻采工艺,2025,47(6):712-719,756,9.基金项目
新型油气勘探开发国家科技重大专项"复杂深地安全高效钻完井技术与装备"(编号:2025ZD1401900)子课题"超深井能量有效传递与高效破岩技术"(编号:2025ZD1401902) （编号:2025ZD1401900）
山东省博士后创新项目"难钻地层多维载荷破岩井底耦合动态研究"(编号:SDCX-ZG-202301017) （编号:SDCX-ZG-202301017）
中国石油化工集团有限公司重点实验室项目"硬地层共振破岩实验研究"(编号:KLJP24024). （编号:KLJP24024）
