【作者】 赵雯婕； 张宇欣； 谭松成； 胡郁乐； 潘秉锁； 段隆臣；

【Author】 ZHAO Wenjie;ZHANG Yuxin;TAN Songcheng;HU Yule;PAN Bingsuo;DUAN Longchen;Faculty of Engineering,China University of Geosciences;National Center for International Research on Deep Earth Drilling and Resource Development;

【机构】 中国地质大学(武汉)工程学院； 科技部地球深部钻探与深地资源开发国际联合研究中心；

【摘要】 聚晶金刚石复合片(PDC)凭借硬度大、弹性模量高、热导率高、各向同性且具有很好的耐磨性等显著优势,广泛应用于地质勘探和石油钻探行业。近年来,随着深井、超深井的增加,PDC开始应用于螺杆钻具的传动轴轴承中。本文以螺杆钻具传动轴上的PDC推力轴承为研究对象,从静力学和PDC轴承材料自身工艺角度出发,运用SolidWorks Simulation软件开展有限元分析,探究PDC推力轴承在不同静压力、温度、扭矩、焊缝宽度下的失效形式。对仿真结果进行方差分析表明,温度、扭矩和焊缝宽度对PDC推力轴承失效有显著性影响,其中,温度对PDC推力轴承在3个方向上的变形呈现高显著性影响,扭矩对轴承在x、y两个方向上的变形有显著性影响,焊缝宽度对轴承在x、z两个方向上的变形有显著性影响。更多还原

【Abstract】 Polycrystalline diamond compact(PDC) has been widely used in geological exploration and oil drilling industries due to its significant advantages such as high hardness,high elastic modulus,high thermal conductivity,isotropy and good wear resistance.In recent years,with the increasing exploitation of deep and ultra-deep wells,PDC has been applied to the drive shaft of screw drills.In this paper,the PDC thrust bearing on the drive shaft of screw drill is taken as the research object.From the perspective of statics and the manufacture process of PDC bearing,the finite element analysis of SolidWorks Simulation software is used to explore the failure modes of PDC thrust bearing under different static pressure,temperature,torque and weld width.The variance analysis of the simulation results shows that temperature,torque and weld width have significant effects on the failure of PDC thrust bearing.Among them,temperature has a high significant effect on the deformation of PDC thrust bearing in three directions.Torque has a significant effect on the deformation of bearing in x and y directions.Weld width has a significant effect on the deformation of bearing in x and z directions.更多还原