力学与实践 ›› 2004, Vol. 26 ›› Issue (3): 0-0.DOI: 10.6052/1000-0992-2003-082

• 应用研究 •    

射孔套管弹性抗挤能力分析

于永南   

  1. 山东东营中国石油大学(华东)储运与建筑工程学院工程力学系
  • 收稿日期:2003-02-27 修回日期:2003-11-07 出版日期:2004-06-10 发布日期:2004-06-10

ANALYSIS OF ELASTIC COLLAPSING OF PERFORATED CASING

  • Received:2003-02-27 Revised:2003-11-07 Online:2004-06-10 Published:2004-06-10

摘要: 套管射孔后其抗挤能力将有所降低. 建立了射孔段套管弹性 抗挤性能分析控制一般方程,并采用摄动理论给出了射孔段套管弹性抗挤能力降低系数一般 计算公式. 并与方孔精确解比较后得出,摄动法所得近似解具有足够的精 度. 为进一步开展射孔套管的弹塑性抗挤分析奠定了基础.

关键词: 射孔套管, 弹性抗挤能力, 降低系数, 摄动法

Abstract: The perforated casing is more vulnerable to collapse under external pressure than that without perforates. This paper gives the elastic differential equation of collapse of perforated casing, and a general formula for reduction factor of elastic collapsing by perturbation method. Compared with the exact solution of square holes, the perturbation ones are of high precision for elastic collapsing of perforated casing.

Key words: perforated casing, elastic collapsing, reduction factor, perturbation method