摘要
为进一步理解斧型PDC钻齿破岩机理,建立PDC钻齿破岩的3D有限元模型,对3种不同切削刃夹角的斧型PDC钻齿破岩方式开展对比研究。结果表明:与150°和165°的钻齿相比,135°的斧型钻齿受到的剪切力和切削力更小,从而具有更高的破岩效率。在相同的后倾角、相同的切削深度和相同的切削力下,165°斧型钻齿切削力波动较小,稳定性更高。与立式车床上的实验数据相比,仿真结果与实验结果总体趋势一致,误差在可接受范围内。
To further study the rock-breaking mechanism of the axe blade PDC cutter,a 3 D finite element model of the dynamic rock breaking of the PDC cutter was established,and a comparative study of three axe cutters with different angles was evaluated.The result shows that the blade with 135° has higher shearing force and cutting force compared to those of cutters with 150° and 165°,which results in a higher efficiency on rock breaking.It is also found that with the same back rake angle,cutting depth and cutting force,the axe blade with 165° cutting edge shows a smaller fluctuation than those of others.Compared with the data collected from vertical lathe(VTL),the trend of simulation results matches with the experiment one and the deviations between experiment and finite element analysis(FEA) can be accepted.
作者
李尚劼
赵星
黄继庆
刘维
LI Shangjie;ZHAO Xing;HUANG Jiqing;LIU Wei(Shenzhen Haimingrun Superhard Materials Co.,Ltd.,Shenzhen 518000,Guangdong,China;Bohai Equipment Manufacturing Co.,Ltd.,China National Petroleum Corporation,Tianjin 300457,China;MoE Key Laboratory of Petroleum Engineering,University of Petroleum(Beijing),Beijing 102249,China)
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2021年第6期85-90,共6页
Diamond & Abrasives Engineering
基金
页岩油气、致密油气水平井“一趟钻”高端钻头系列化。
关键词
斧型PDC钻齿
有限元分析
单齿切削模拟
实验室立车测试
axe type PDC drill teeth
finite element analysis
simulation of single blade cutting
laboratorial vertial lathe experiment
