| 基于有限元法的高压挤压井套管强度分析 |
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| 引用本文： | 王伟章,闫相祯.基于有限元法的高压挤压井套管强度分析[J].潍坊学院学报,2010,10(2):1-6. |
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| 作者姓名： | 王伟章 闫相祯 |
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| 作者单位： | 1. 潍坊学院,山东,潍坊,261061
2. 中国石油大学,山东,东营,257061 |
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| 基金项目： | 中国石油天然气集团公司石油管柱力学和环境行为重点实验室资助项目 |
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| 摘 要： | 传统观点认为,高压挤压对套管强度及其寿命有严重的负面影响。文章以5inch及7inch套管为研究对象,针对不同的钢级、不同的射孔参数组合,在不同的环境条件（不同内外压）下,组合成多种套管模型,利用有限单元法进行建模分析。结果表明：在射孔参数相同时,随地层外压的增大,套管内的等效应力逐渐增大且随外压呈线性规律变化;随内压的增大,套管等效应力急速下降;当内压大于外压时,套管等效应力下降趋缓;当套管内施加内压时,套管射孔段的应力状况得到改善。
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| 关 键 词： | 套管 射孔 高压挤压 有限元法 |
Analysis of Casing Strength in High-Pressure Gravel Packing Based on the Finite Element Method |
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| WANG Wei-zhang,YAN Xiang-zhen.Analysis of Casing Strength in High-Pressure Gravel Packing Based on the Finite Element Method[J].Journal of Weifang University,2010,10(2):1-6. |
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| Authors: | WANG Wei-zhang YAN Xiang-zhen |
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| Institution: | WANG Wei-zhang1,YAN Xiang-zhen2 (1.Weifang University,Weifang 261061,China,2.China University of Petroleum,Dong Ying 257061,China) |
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| Abstract: | It used to be held that high-pressure extrusion would severely influnce the strength and duration of casing.Based on 5 inch and 7inch casing,the article intends to conduct modeling and analysis,by means of the finite element method,of a multi-tube model of casing of different steel grades and a combination of different perforation parameters,under different environmental conditions(different internal and external pressure).The results show that under the same perforation parameter,the equivalent stress with... |
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| Keywords: | casing perforation high-pressure extrusion finite element method |
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