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砾岩层PDC切削齿优选试验

程书婷 王红波 纪慧 蔡茂盛 李赛

程书婷, 王红波, 纪慧, 蔡茂盛, 李赛. 砾岩层PDC切削齿优选试验[J]. 金刚石与磨料磨具工程, 2023, 43(1): 43-48. doi: 10.13394/j.cnki.jgszz.2022.0072
引用本文: 程书婷, 王红波, 纪慧, 蔡茂盛, 李赛. 砾岩层PDC切削齿优选试验[J]. 金刚石与磨料磨具工程, 2023, 43(1): 43-48. doi: 10.13394/j.cnki.jgszz.2022.0072
CHENG Shuting, WANG Hongbo, JI Hui, CAI Maosheng, LI Sai. Experimental study on optimization of PDC cutting teeth for conglomerate layer[J]. Diamond & Abrasives Engineering, 2023, 43(1): 43-48. doi: 10.13394/j.cnki.jgszz.2022.0072
Citation: CHENG Shuting, WANG Hongbo, JI Hui, CAI Maosheng, LI Sai. Experimental study on optimization of PDC cutting teeth for conglomerate layer[J]. Diamond & Abrasives Engineering, 2023, 43(1): 43-48. doi: 10.13394/j.cnki.jgszz.2022.0072

砾岩层PDC切削齿优选试验

doi: 10.13394/j.cnki.jgszz.2022.0072
详细信息
    通讯作者:

    王红波,1978年生,博士后、硕导。主要研究方向:钻井材料与机具、采油设备及破岩机理。E-mail:tmwangbo@163.com

  • 中图分类号: TQ164;TG74

Experimental study on optimization of PDC cutting teeth for conglomerate layer

  • 摘要: 为了在砾岩层中获得更好的钻进效果,需要对砾岩层用PDC钻头切削齿的齿形和后倾角进行优选。对普通平面齿、锥形齿和斧形齿在砾岩岩样中进行单齿破岩试验,再对优选出的斧形齿进行仿真分析,优选斧形齿的最佳齿面角度,再与普通平面齿进行切削模拟,验证试验结果。结果表明:斧形齿在砾岩层中切削效率最高,受力最稳定;齿面角度为140°的斧形齿在砾岩中钻进效果更好,当其配合30°后倾角时,切削效率最高。

     

  • 图  1  单齿破岩试验装置

    Figure  1.  Single tooth rock breaking experimental device

    图  2  平面齿、锥形齿、斧形齿物理模型

    Figure  2.  Physical models of plane tooth, conical tooth and axe tooth

    图  3  不同钻压下不同类型切削齿的钻入深度对比

    Figure  3.  Comparison of drilling depth of different types of cutting teeth under different weight on bit

    图  4  1 000 N钻压下的3种切削齿切向力对比

    Figure  4.  Comparison of tangential forces of three cutting teeth under 1 000 N

    图  5  1 500 N钻压下的3种切削齿切向力对比

    Figure  5.  Comparison of tangential forces of three cutting teeth under 1 500 N

    图  6  2 000 N钻压下的3种切削齿切向力对比

    Figure  6.  Comparison of tangential forces of three cutting teeth under 2 000 N

    图  7  2 500 N钻压下3种切削齿切向力对比

    Figure  7.  Comparison of tangential forces of three cutting teeth under 2 500 N

    图  8  不同角度斧形PDC齿钻进砾岩应力场分布

    Figure  8.  Distribution of stress field in conglomerate drilling with axe shaped PDC teeth at different angles

    图  9  优选后的PDC斧形齿改变后倾角切削砾岩应力场分布

    Figure  9.  Stress field distribution of cutting conglomerate with optimized axe-shaped PDC teeth after changing the inclination angle

    图  10  PDC齿140°斧形不同后倾角切向力

    Figure  10.  cutting of 140° axe shaped PDC teeth with different caster angles

    表  1  不同切削齿改变钻压条件下的钻深、切向力

    Table  1.   Drilling depth and tangential force under different cutting teeth changing weight on bit

    钻压
    F1 / N
    切削齿
    类型
    钻进深度
    h / mm
    切向力
    平均值 F2 / N
    切向力
    标准差 F3 / N
    1 000平面齿0.937238.74660.202
    锥形齿1.648189.58751.262
    斧形齿1.765173.34832.076
    1 500平面齿1.475406.12475.32
    锥形齿2.176337.64156.645
    斧形齿2.497312.25832.060
    2 000平面齿1.873613.237110.166
    锥形齿2.497497.21566.182
    斧形齿2.719468.76838.237
    2 500平面齿2.311801.129115.548
    锥形齿2.893612.78675.649
    斧形齿3.312594.99534.839
    下载: 导出CSV

    表  2  刀具和岩石材料参数

    Table  2.   Tool and rock material parameters

    材料类别密度 ρ /(g·cm−3弹性模量 E / GPa泊松比 μ热导率 k /(J·m−1·S−1·℃−1比热容 J /(kg·℃)抗拉强度 Rm / MPa
    PDC3.4858600.07543.0790
    砾岩2.500200.303.58005.3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-05-12
  • 修回日期:  2022-06-22
  • 录用日期:  2022-06-24
  • 网络出版日期:  2022-07-13
  • 刊出日期:  2023-02-20

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