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[1]计喆　何莎　陈华燕　曾祥国.考虑裂纹的CNG地下储气井剩余强度数值模拟[J].油气储运,2020,39(01):1-7.
　JI Zhe,HE Sha,CHEN Huayan,et al.Numerical simulation of residual strength of CNG underground gas storage well considering cracks[J].Oil & Gas Storage and Transportation,2020,39(01):1-7.
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考虑裂纹的CNG地下储气井剩余强度数值模拟

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 39 期数: 2020年01期 页码: 1-7 栏目: 出版日期: 2020-01-25
Title:

Numerical simulation of residual strength of CNG underground gas storage well considering cracks

作者:

计喆　何莎　陈华燕　曾祥国

Author(s):

JI Zhe;  HE Sha;  CHEN Huayan;  ZENG Xiangguo

关键词:

CNG储气井; 裂纹; 应力强度因子; 有限元; 剩余强度

Keywords:

CNG gas storage well;  cracks;  stress intensity factor;  finite element;  residual strength

分类号:
TE832
文献标志码:
A
摘要:

由于天然气中存在的硫化氢等气体具有腐蚀性，因此储气井在建设和服役过程中，井管内表面容易在腐蚀和应力的双重作用下产生裂纹，最终导致井管破裂失效。建立储气井井管-水泥环-地层数值模型，采用传统基于工作应力的方法和基于断裂力学应力强度因子的方法分析了含裂纹储气井的剩余强度，得出不同条件下许可裂纹的尺寸。结果表明，基于断裂力学应力强度因子的分析方法可以更准确地判定危险点位置，能够有效排除CNG储气井安全事故隐患。

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更新日期/Last Update: 2020-03-05