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盐穴储油(气)库水溶造腔管柱动力特性初探
引用本文:李银平,杨春和,屈丹安,杨长来,施锡林.盐穴储油(气)库水溶造腔管柱动力特性初探[J].岩土力学,2012,33(3):681-686.
作者姓名:李银平  杨春和  屈丹安  杨长来  施锡林
作者单位:1. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,武汉 430071; 2. 重庆大学 西南资源开发及环境灾害控制工程教育部重点实验室,重庆 400044; 3. 中国石油化工股份有限公司天然气分公司,北京 100120
基金项目:国家重点基础研究发展规划(973)(No.2009CB724602,2009CB724603)
摘    要:针对盐穴储气库单井水溶造腔过程中管柱动力特性开展了初步探讨,认为造腔工程中,管柱在受限空间的自激振动和动力失稳是导致管柱发生严重弯曲或者破损的主要原因。初步分析了无空间约束条件下内外管柱的振动特性,得到了理想条件下管柱临界流速的计算式。计算表明,无约束条件下造腔管柱一般会由于液-固耦联振动而发生动力失稳,而且造腔内管一般会先于造腔外管发生失稳破坏。鉴于问题的重要性和复杂性,还对造腔管柱临界流速全面计算力学模型应考虑的诸因素进行了探讨,初步分析了管道轴力、液体压力、造腔循环方式、管道水平支撑,以及轴向水击和管道横向振动耦合的影响,为进一步结合工程实际开展空间约束条件下造腔管柱动力特性全面分析提出了建议。

关 键 词:盐穴储油(气)库  造腔管柱  动力失稳  临界流速  约束
收稿时间:2011-10-24

Preliminary study of dynamic characteristics of tubing string for solution mining of oil/gas storage salt caverns
LI Yin-ping , YANG Chun-he , QU Dan-an , YANG Chang-lai , SHI Xi-lin.Preliminary study of dynamic characteristics of tubing string for solution mining of oil/gas storage salt caverns[J].Rock and Soil Mechanics,2012,33(3):681-686.
Authors:LI Yin-ping  YANG Chun-he  QU Dan-an  YANG Chang-lai  SHI Xi-lin
Institution:1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Key Laboratory for Exploitation of Southwestern Resources & Environmental Disaster Control Engineering of Ministry of Education, Chongqing University, Chongqing 400044, China; 3. Natural Gas Branch Company, China Petroleum Chemical Industry Co., Ltd., Beijing 100120, China
Abstract:The dynamic characteristics of the tubing string for solution mining of oil/gas storage caverns are studied preliminarily.It is implied that the buckling of tubing string will induce damage and failure of tubing.Through the preliminary study of vibration characteristics of tubing string without space constraint,the critical velocity expression of tubing string in an ideal condition is obtained.Computation analysis shows that the tubing string without space constraint will generally suffer buckling due to fluid-solid coupling vibration;and the inner casing will reach buckling prior to the out casing generally.Considering the importance and complexity of this problem,the influences on the critical velocity analysis mechanical model of conditions,axial force,fluid pressure,solution mining cycling method,horizontal constrains,and the coupling of axial liquid hammer and transverse vibration,are discussed roughly.Finally,considering space constraint,some research advices on the all-sided analysis of the tubing string dynamic characteristics are proposed.
Keywords:oil/gas storage salt cavern  tubing string for solution mining  dynamic buckling  critical velocity  constraint
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