高转速/低钻压/大泵量的全面钻进孕镶金刚石钻头  

Comprehensive drilling impregnated diamond bit under high rotate speed/low wob/large pump output

作　　者：程敏[1] 庞丰[1] 孙荣[1] 黄帆[1] 符文[1] 段隆臣[1] 

机构地区：[1]中国地质大学工程学院,岩土钻掘与防护教育部工程研究中心,武汉430074

出　　处：《金刚石与磨料磨具工程》2015年第1期61-67,82,共8页Diamond & Abrasives Engineering

基　　金：中国铀矿第一科学深钻资助项目(KZ11Z20034)

摘　　要：综述了高转速、低钻压、大泵量条件下,全面钻进孕镶金刚石钻头的应用及研究现状。并将钻头的研磨性磨损和冲蚀性磨损的本质类比于金刚石的碎岩过程,得出了各工艺参数对岩石破碎、胎体磨损和金刚石磨损的影响。结果表明:在岩石破碎过程中,转速影响最为显著,其次为钻压,最后为泵量;就胎体磨损而言,泵量影响最大,钻压最小;在金刚石磨损过程中,转速和泵量均有较大影响,而钻压影响最小。Applying and research status of comprehensive drilling with impregnated diamond bit at rotate speed/low wob/large pump output was reviewed. A ＂calculus＂ rock breaking model under the drilling condition had been put forward preliminarily, with the nature of abrasive wear and bit corrosion compared to rock breaking process. Results showed that during rock breaking, rotation speed mattered the most, followed by wob and pump output. And when it came to matrix wear, the rank would be pump output, rotation speed and wob, from most influential to least. In diamond wear, rotation speed and pump output both had higher effect than wob.

关 键 词：高转数 低钻压 大泵量 全面钻进 孕镶金刚石钻头 

分 类 号：TE921[石油与天然气工程—石油机械设备] TG74[金属学及工艺—刀具与模具]