西南石油大学学报(自然科学版) ›› 2003, Vol. 25 ›› Issue (4): 69-72.DOI: 10.3863/j.issn.1000-2634.2003.04.20

• 石油机械工程及其它 • 上一篇    下一篇

射孔套管应力集中系数有限元分析

唐波1 杨龙2 练章华1 黄生远3 张平3 杨军孝3   

  1. (1.西南石油学院石油工程学院,四川 南充 637001; 2.CNPC西安管材研究所;3.青海油田采油二厂)
  • 收稿日期:2002-07-10 修回日期:1900-01-01 出版日期:2003-08-20 发布日期:2003-08-20

FEA OF STRESS CONCENTRATION COEFFICIENT OF PERFORATED CASING

TANG Bo1 YANG Long2 LIAN Zhang-hua1 HUANG Sheng-yuan3 ZHANG Ping3 YANG Jun-xiao3   

  1. (Southwest Petroleum Institute, Nanchong Sichuan 637001, China)
  • Received:2002-07-10 Revised:1900-01-01 Online:2003-08-20 Published:2003-08-20

摘要:

建立了射孔套管的有限元力学模型,对不同孔径、孔密及相位角的射孔套管在外挤压力作用下的孔眼应力集中系数进行了有限元分析。旨在讨论非线性材料弹塑性范围内多孔情况下,对孔眼的应力集中系数及对管体抗挤强度的影响,为射孔套管应力集中及强度影响提供了详尽的数据,并给出了优化射孔方案。

关键词: 套管, 射孔, 应力集中系数, 抗挤强度, 限元法

Abstract:

The finite element mechanical model of perforated casing was established in the paper. Under the out pressure condition, the Finite Element Analysis (FEA) of Stress Concentration Coefficient (SCC) in perforated casing was studied with the different perforating diameter, shot density and phasing. The objective is to discuss the effects of SCC and collapse strength of perforated casing in the elastoplastic range. It provided the detail data for the effects of SCC and collapse strength, and presented the optimize scheme for perforating.

Key words: casing, perforating, stress concentration coefficient, collapse strength, FEM

中图分类号: