石油学报 ›› 1996, Vol. 17 ›› Issue (2): 113-119.DOI: 10.7623/syxb199602017

• 石油工程 • 上一篇    下一篇

影响套管挤压强度的主要因素

仇伟德, 赵怀文   

  1. 石油大学
  • 收稿日期:1993-06-25 修回日期:1995-07-17 出版日期:1996-04-25 发布日期:2013-07-08
  • 作者简介:仇伟德.1969年毕业于南京工学院机械系.1981年获石油大学工学硕士.现为石油大学(华东)机械系教授.通讯处:山东省东营市.邮政编码:257062

MAJOR FACTORS HAVING INFLUENCE ON THE ULTIMATE COLLAPSE STRENGTH OF CASING

Qiu Weide, Zhao Huaiwen   

  1. Petroleum University
  • Received:1993-06-25 Revised:1995-07-17 Online:1996-04-25 Published:2013-07-08

摘要: 对影响套管极限外压的主要因素径厚比、变壁厚、初始椭圆率和材料机械性质等,进行了分析和计算;说明了套管抗挤设计中的若干基本概念,并从理论上解释了有关公式中的若干系数;对套管抗挤计算提出了一些建议.本文的理论分析和计算可供实际使用.

关键词: 技术套管, 弹塑性, 稳定

Abstract: Major factors having influence on the ultimate collapse strength of casing are represented as the ratio of diameter to wall thickness,the variation of wall thickness,the initial ellipticity and the material mechanical properties of casing.These factors are analyzed and calculated.Also represented are some fundamental concepts of designing the ultimate collapse strength of casing,and theoretical explanations of some coefficients involved in relevant equations,as well as some proposals regarding the calculation of the ultimate collapse strength of casing.The theoretical analyses and calculations represented in the paper can be applied to practical enigneering.

Key words: casing, elastico-plasticity, stability