欢迎访问润滑与密封官方网站!

咨询热线:020-32385313 32385312 RSS EMAIL-ALERT
石油套管偏磨后剩余强度的模拟分析
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金项目(50774063);“十二五”国家科技重大专项(2011ZX05050).


Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    基于钻柱接头与套管磨损试验结果,采用Dawson和White的能量损失磨损理论计算得到套管磨损系数。运用ABAQUS建立钻柱接头-套管偏磨的三维有限元模型,采用二次开发的Umeshmotion子程序和Arbitrary Lagrange-Euler自适应网格技术准确模拟钻进过程中的套管局部偏磨过程,并对磨损后的套管的剩余抗挤和抗内压强度进行分析。结果表明:套管磨损后的形状为“月牙形”,且磨损最大深度与磨损时间呈非线性关系,而套管剩余强度与磨损最大深度近似呈线性关系;套管磨损对剩余抗挤强度影响最大,当剩余壁厚小于50%时,套管失去抵抗外挤作用的能力, 但仍然具有一定的抗内压强度;发生偏磨后的套管被外挤和内压载荷作用而破坏的形式分别为挤扁毁坏和拉断毁坏。

    Abstract:

    Based on the experimental data of friction and wear test of drill joint and casing,the joint-casing wear coefficient was calculated by using the energy loss wear theory of Dawson and White.The three dimensional (3D) finite element model of joint-casing eccentric wear was constructed by using ABAQUS.The process of casing partial eccentric wear in drilling was exactly stimulated by using redevelopment Umeshmotion user subroutine and Arbitrary Lagrange-Euler adaptive meshing techniques to adjust the location of the wear node timely,and the remaining strength of collapse and burst of casing after wear was analyzed.The result of research demonstrates that the shape of worn casing is crescent,and the maximum wear depth by numerical simulation presents non-linear relationship with the time.Moreover the remaining strength of casing presents approximate linear relationship with the increasing of the maximum wear depth.Casing wear impacts the remaining collapse strength at most.When the remaining thickness is less than 50%,the casing will lost the load capacity of collapse but it still has some burst strength.The failure behaviors of eccentric worn casing are collapse and tensile failure by internal and external pressure.

    参考文献
    相似文献
    引证文献
引用本文

于 浩,练章华,冯 智,于文明,刘永辉,张 强,王付会.石油套管偏磨后剩余强度的模拟分析[J].润滑与密封,2015,40(6):25-31.
.[J]. Lubrication Engineering,2015,40(6):25-31.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2015-11-24
  • 出版日期: