膨胀套管性能与力学仿真
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摘要
论文依托于中国地质大学(北京)与中国地质调查局勘探技术研究所合作进行研究的《深孔膨胀套管护壁技术研究》项目,项目编号:1212010816009。管材膨胀成形力和成形效果的相关影响因素及变化规律的仿真模拟为主要研究内容。
在对管材膨胀成形弹塑性力学分析基础上,主要通过ANSYS有限元模拟,结合室内实验等研究手段,对膨胀管仿真模型与仿真模拟系统的建立做了比较系统地研究,取得了一系列重要结论与认识:1.通过ANSYS有限元模拟和实验的对比研究表明,建立的仿真模型是合理的,仿真模拟实验得的膨胀成形力规律是可信的;2.得到了实体锥型膨胀套管,膨胀力、套管长度、壁厚变化与膨胀率、摩擦系数、膨胀锥头半锥角的相互关系;3.膨胀力、套管长度、壁厚变化与膨胀率、摩擦系数、给进速率的相互关系;4.和实体锥型膨胀套管轴向收缩量随套管膨胀过程成线性变化不同,旋转拟合型膨胀套管轴向长度膨胀后有所增长,且在膨胀开始后几秒内达到最大值,并在此后基本维持稳定;5.不合理的给进速率、旋转速率会导致旋轮轴向受力的变化幅度增大,影响膨胀成型的稳定进行,造成残余应力增大6.以具有合理的半锥角、摩擦系数的曲面锥作膨胀工具结构,有利于减小膨胀后的残余应力;7.膨胀力与膨胀锥头与套管塑性变形接触区面积大小密切相关,三旋轮旋转拟合型膨胀方式所需的膨胀力大约为实体锥型的1/4-1/6;8.基于VC++和ansys软件编制出膨胀套管仿真模拟系统软件,将膨胀套管仿真模型参数化、简单化,有利于非专业人员的应用;9.通过对相应尺寸的套管仿真模拟试验,认为膨胀管技术应用到非油气勘探是可行的。
主要创新之处为:1.通过VC++语言对ANSYS软件进行二次开发,建立了三种膨胀套管仿真模拟系统,将动态,旋压仿真模拟集成于系统之中,方便不熟悉专业软件的研究人员继续研究之用;2.将三轮内旋压仿真模拟技术引用到膨胀套管研究中,实验证明采用三轮内旋压方式的锥头作膨胀工具结构,有利于减小膨胀力,有利于套管成型后与外部支撑的拟合。
This paper is part of the contents of China Geological Survey Project "Deep Hole Expandable Tubular Technology (ETT) ". This paper mainly study in finite element analysis (FEA) of ETT.
Based on elastic-plastic mechanical analysis of the pipe expansion, ANSYS FEM and 20 # steel pipe indoor experiment, the paper systematically does a study of the forming mechanism, and obtains a series of important conclusions and understanding : 1. It has compiled a simple EFA program of ETT by VC++ and ANSYS ANSYS comprises 3 FEM models of ETT. FEM simulation and experimental studies have shown that the establishment of the mechanical model is a scientific and rational, and the forming force formula is practical. 2. It has get some important conclusions about the relationship between tubular material, the the cone angle, friction coefficient, diameter of expansion cone and forming force, length, thickness, residual stress of the pipe. 3. There are some new conclusions about spinning ETT at home. 4. It is feasible to apply ETT to the non-oil-and-gas exploration.
The main innovation in this paper is: 1. A high efficiency ETT FEA system is developed by utilizing VC++ and APDL, which is a secondary development language of ANSYS in this thesis. It can create and analysis the ETT automatically and intelligently. So it can reduce the ETT design load and advance efficiency. 2. The FEA of the ETT with 3 symmetrical spinning expansion tools was firstly instituted at home.
在对管材膨胀成形弹塑性力学分析基础上,主要通过ANSYS有限元模拟,结合室内实验等研究手段,对膨胀管仿真模型与仿真模拟系统的建立做了比较系统地研究,取得了一系列重要结论与认识:1.通过ANSYS有限元模拟和实验的对比研究表明,建立的仿真模型是合理的,仿真模拟实验得的膨胀成形力规律是可信的;2.得到了实体锥型膨胀套管,膨胀力、套管长度、壁厚变化与膨胀率、摩擦系数、膨胀锥头半锥角的相互关系;3.膨胀力、套管长度、壁厚变化与膨胀率、摩擦系数、给进速率的相互关系;4.和实体锥型膨胀套管轴向收缩量随套管膨胀过程成线性变化不同,旋转拟合型膨胀套管轴向长度膨胀后有所增长,且在膨胀开始后几秒内达到最大值,并在此后基本维持稳定;5.不合理的给进速率、旋转速率会导致旋轮轴向受力的变化幅度增大,影响膨胀成型的稳定进行,造成残余应力增大6.以具有合理的半锥角、摩擦系数的曲面锥作膨胀工具结构,有利于减小膨胀后的残余应力;7.膨胀力与膨胀锥头与套管塑性变形接触区面积大小密切相关,三旋轮旋转拟合型膨胀方式所需的膨胀力大约为实体锥型的1/4-1/6;8.基于VC++和ansys软件编制出膨胀套管仿真模拟系统软件,将膨胀套管仿真模型参数化、简单化,有利于非专业人员的应用;9.通过对相应尺寸的套管仿真模拟试验,认为膨胀管技术应用到非油气勘探是可行的。
主要创新之处为:1.通过VC++语言对ANSYS软件进行二次开发,建立了三种膨胀套管仿真模拟系统,将动态,旋压仿真模拟集成于系统之中,方便不熟悉专业软件的研究人员继续研究之用;2.将三轮内旋压仿真模拟技术引用到膨胀套管研究中,实验证明采用三轮内旋压方式的锥头作膨胀工具结构,有利于减小膨胀力,有利于套管成型后与外部支撑的拟合。
This paper is part of the contents of China Geological Survey Project "Deep Hole Expandable Tubular Technology (ETT) ". This paper mainly study in finite element analysis (FEA) of ETT.
Based on elastic-plastic mechanical analysis of the pipe expansion, ANSYS FEM and 20 # steel pipe indoor experiment, the paper systematically does a study of the forming mechanism, and obtains a series of important conclusions and understanding : 1. It has compiled a simple EFA program of ETT by VC++ and ANSYS ANSYS comprises 3 FEM models of ETT. FEM simulation and experimental studies have shown that the establishment of the mechanical model is a scientific and rational, and the forming force formula is practical. 2. It has get some important conclusions about the relationship between tubular material, the the cone angle, friction coefficient, diameter of expansion cone and forming force, length, thickness, residual stress of the pipe. 3. There are some new conclusions about spinning ETT at home. 4. It is feasible to apply ETT to the non-oil-and-gas exploration.
The main innovation in this paper is: 1. A high efficiency ETT FEA system is developed by utilizing VC++ and APDL, which is a secondary development language of ANSYS in this thesis. It can create and analysis the ETT automatically and intelligently. So it can reduce the ETT design load and advance efficiency. 2. The FEA of the ETT with 3 symmetrical spinning expansion tools was firstly instituted at home.
引文
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[3]张文华,刘国辉,胡国清.可膨胀套管技术及其应用.石油钻采工艺, 2001,第23卷第1期.
[4] Carstens C, Striffmatter K. Solid expandable tubular technology: The value of planned installation vs. contingency. SPE DRILLING & COMPLETION, 2006, 21 (4).
[5]宁连旺, ANSYS有限元分析理论与发展.山西科技, 2008,第4期.
[6]张波. ANSYS有限元数值分析原理与工程应用.北京:清华大学出版社, 2005.
[7] Waddell Kevin, Schuurmans Rutmer. Installation of solid expandable tubular systems through milled casing windows. 2004 IADC/SPE Drilling Conference, 2004, p 949-958
[8] ANSYS Structural Analysis Helps Speed Commercialization of Solid Expandable Tubulars. ANSYS Case study, March 2003.
[9] Inyau Bada,Leo Maekiaho,Fitzerald Mathew .Maxiimizing Production with 13Cr Solid Expandable Tubulars in Sarawak Gas Fields .SPE88027, 2004.
[10] Pervez T, Seibi AC, Karrech A. Simulation of solid tubular expansion in well drilling using finite element method. PETROLEUM SCIENCE AND TECHNOLOGY , 2005, 23.
[11]韩志仁,陶华,刘黎明.筒形件强力内旋压有限元模拟.机械科学与技术,2004,第1期
[12]韩志仁,陶华,黄赟.旋压成形有限元分析中旋轮被动转动问题的研究.机械强度,2005,第5期
[13]张庆荣,李栋才,李霄.可膨胀管膨胀机理的数值模拟.内蒙古石油化工,2006年第2期
[14]梅瑛,李瑞琴等.筒形强反旋的数值模拟及旋压力分析.机械设计与研究,2007年8月,第23卷第4期
[15]刘永刚.膨胀套管结构设计及其机理研究.西南石油学院硕士论文, 2004
[16]张建兵.油气井膨胀管技术机理研究.西南石油学院博士论文, 2003
[17]刘波.曲轴参数化建模和有限元分析.武汉理工大学硕士论文, 2006
[18]邱冬瑞.门式刚架轻钢结构优化设计及程序开发.北京工业大学硕士论文, 2008
[19]孟庆昆,谢正凯,冯来.可膨胀套管技术概述[J].2003, 26 (4): 67-68.
[20]王霞,潘成松等.可膨胀套管技术的现状及展望[J].2007, 8 (34): 1-6.
[21] Noel G. The development and applications of solid expandable tubular technology. JOURNAL OF CANADIAN PETROLEUM TECHNOLOGY, 2005, 44(12)
[22] Karrech A, Seibi A , Pervez T, Sab K.The development and applications of solid expandable tubular technology. PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE 2005,2005, 5
[23] Marketz F, Welling RWF, van Noort RHJ, Baaijens MN.Expandable tubular completions for carbonate reservoirs. SPE DRILLING & COMPLETION, 2007, 22 (1)
[24] Carstens C, Striffmatter K. Solid expandable tubular technology: The value of planned installation vs. contingency. SPE DRILLING & COMPLETION, 2006, 21 (4)
[25] Moore MJ, Wright JC, Winters WJ, Daigle C. A method for isolating pressure-depleted zones with solid-expandable tubulars. SPE DRILLING & COMPLETION , 2004, 19 (4)
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