| 疏松砂岩地层套管可靠性分析 |
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| 引用本文： | 杨秀娟,闫相祯,王金龙,王建军.疏松砂岩地层套管可靠性分析[J].中国石油大学学报(自然科学版),2005,29(6). |
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| 作者姓名： | 杨秀娟 闫相祯 王金龙 王建军 |
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| 作者单位： | 中国石油大学储运与建筑工程学院,山东,东营,257061 |
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| 基金项目： | 中国石油集团公司重点实验室资助课题 |
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| 摘 要： | 建立了套管、水泥环和地层的三维有限元模型。采用蒙特卡罗法,分析了输入随机变量对套管可靠性的影响。结果表明,出砂区域管体有效应力和轴向应力比盖层和底层管体的明显增大;上覆岩层压力与套管厚度对出砂区域管体应力的变化起主要作用,是影响套管失效概率的主要因素。
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| 关 键 词： | 套管 可靠性 蒙特卡罗法 有效应力 轴向应力 |
Analysis of casing reliability in loose sandstone reservoir |
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| YANG Xiu-juan,YAN Xiang-zhen,WANG Jin-long,WANG Jian-jun.Analysis of casing reliability in loose sandstone reservoir[J].Journal of China University of Petroleum,2005,29(6). |
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| Authors: | YANG Xiu-juan YAN Xiang-zhen WANG Jin-long WANG Jian-jun |
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| Abstract: | A three-dimensional finite element model of casing-cement sheath-formation was established.Based on Monte-Carlo method,the effect of input stochastic variables on the casing reliability was analysed.The results indicate that effective stress and axial stress of the casing in sand production regions increase obviously compared with those of casings in other regions.And the overburden strata pressure and the casing thickness which are major factors influencing casing failure probability play important roles in change of the casing stress in sand production region. |
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| Keywords: | casing reliability Monte-Carlo method effective stress axial stress |
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