| 封隔器对油管螺旋屈曲的影响分析 |
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| 引用本文： | 刘凤梧,徐秉业,高德利.封隔器对油管螺旋屈曲的影响分析[J].清华大学学报(自然科学版),1999,39(8):3. |
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| 作者姓名： | 刘凤梧 徐秉业 高德利 |
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| 作者单位： | 1. 清华大学,工程力学系,北京,100084
2. 石油大学,石油工程系,北京,100083 |
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| 摘 要： | 油管的螺旋屈曲对封隔器有严重的影响。本文将管柱分为在封隔器附近的空间梁柱段和与约束管壁连续接触的屈曲构形段，通过、分析求解管柱屈曲后所满足的四阶强非线性常微分方程，考虑管柱的固支端部边界条件和连续条件，得到了屈曲管柱变形的解析解。进而得到了管柱在封隔器附近的内力等。所得解析结果与Ｓｏｒｅｎｓｏｎ的数值结果一致。
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| 关 键 词： | 螺旋屈曲 管柱后屈曲 封隔器 油井 |
| 修稿时间： | 1998-11-05 |
Packer effect analysis of helical buckling of well tubing |
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| LIU Fengwu,XU Bingye,GAO Deli.Packer effect analysis of helical buckling of well tubing[J].Journal of Tsinghua University(Science and Technology),1999,39(8):3. |
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| Authors: | LIU Fengwu XU Bingye GAO Deli |
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| Abstract: | The helical buckling of tubular in tubing has a strong influence on packers. In this paper, the buckled tubular was treated as two parts, one of which is the spatial beam and the other keeps continuously contact with the confining tubing. The analytical deformation expressions of the two parts were derived by solving buckling equations with end condition and continuous condition of the buckled tubular. Furthermore, the shear loads and bending moments near the packer caused by helical buckling were obtained. The result of the analytical results obtained by this paper are well coincident with Sorenson's numerical results. |
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| Keywords: | helical buckling post buckling of tubular packer oil well |
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