| 月牙形磨损缺陷套管的抗内压强度研究 |
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| 引用本文： | 魏玲,林元华,杜仁德,朱达江,卢亚锋,孙永兴,张继川.月牙形磨损缺陷套管的抗内压强度研究[J].机械科学与技术(西安),2010(4). |
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| 作者姓名： | 魏玲 林元华 杜仁德 朱达江 卢亚锋 孙永兴 张继川 |
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| 作者单位： | 西南石油大学石油管力学和环境行为重点实验室;中国石化西南分公司;中国石油西南油气田分公司采气工程研究院; |
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| 基金项目： | 新世纪优秀人才支持计划项目(NCET-08-0907);;四川省杰出青年学科带头人培养基金项目(06ZQ026-028);;国家自然科学基金项目(50774063);;中国石油天然气集团公司应用基础研究项目(2008A-3005)资助 |
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| 摘 要： | 套管磨损多呈"月牙形",其直接后果是降低套管的抗挤强度和抗内压强度,如何计算磨损套管的抗挤强度、抗内压强度制约着如何安全地设计套管柱。因此笔者对"月牙形磨损"套管在不同磨损程度时的周向应力进行研究,并重点对其抗内压强度的计算方法进行了探索。笔者以P110的95/8 in套管为例,建立了计算磨损套管周向应力的解析模型,并用弹塑性有限元方法建立了套管的有限元力学模型,通过有限元分析来验证解析模型的正确性,最后以此为基础得出了磨损套管的抗内压强度计算公式。
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| 关 键 词： | 套管磨损 抗内压强度 有限元分析 |
Burst Strength Research of Crescent-shaped Wear Casing |
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| Wei Ling,Lin Yuanhua,Du Rende,Zhu Dajiang,Lu Yafeng,Sun Yongxing,Zhang Jichuan.Burst Strength Research of Crescent-shaped Wear Casing[J].Mechanical Science and Technology,2010(4). |
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| Authors: | Wei Ling Lin Yuanhua Du Rende Zhu Dajiang Lu Yafeng Sun Yongxing Zhang Jichuan |
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| Affiliation: | 1Key Laboratory for Mechanical and Environmental Behavior of Tubular Goods/a>;Southwest Petroleum University/a>;Chengdu 610500/a>;2Southwest Branch of SINOPEC Corporation/a>;Chengdu 610081/a>;3Gas Production Engineering Research Institute/a>;PetroChina Southwest Oil and Gas Fields Company/a>;Guanghan 618300 |
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| Abstract: | The casing wear is mostly crescent-worn,which reduces collapse strength and burst strength of the casing directly.How to estimate the burst strength of worn casing has a big effect on how to safely design casing strings.We analyze the hoop stress of crescent-worn casing in different wearing degree and focus on the calulation methods of burst strength.Take P110 95/8 casing for example,the analytical model of the hoop stress is first established,then the finite element mechanic model of casing is established ... |
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| Keywords: | casing wear burst strength finite element analysis(FEA) |
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