PDC钻头切削齿失效分析  

Failure Analysis of PDC Bit Cutter

作　　者：张富晓[1] 黄志强[2] 周已[2] 

机构地区：[1]西南石油大学化学化工学院,成都610500 [2]西南石油大学机电工程学院,成都610500

出　　处：《石油矿场机械》2015年第9期44-49,共6页Oil Field Equipment

摘　　要：对PDC钻头失效切削齿进行宏、微观形貌观察,研究其失效原因和失效机理,并提出相应改善措施。结果表明:PDC钻头切削齿的主要失效形式为齿的断裂、磨损和脱落;切削齿失效的主要原因是由于冲击刮削破岩对切削齿造成的损伤和切削齿材料本身的性能较差、两相结合强度不高。可从材料配方、结构设计及制造等方面进行改进。PDC cutter failure to carry out formal was analyzed,and failure causes and failure mech-anisms were studied,corresponding improvement measures.The results showed that the main fail-ure mode of PDC cutter for breaking teeth,wear and shedding.The main reason for the failure of cutting teeth on the one hand scraping rock breaking due to impact damage caused by the cutting teeth;the other is due to the performance of the cutting teeth of the material itself is not strong, two-phase bonding strength is not high.Measures can be taken from the material formulation, structural design and the use of manufacturing.

关 键 词：PDC钻头 切削齿 失效分析 

分 类 号：TE921.1[石油与天然气工程—石油机械设备]