| 深井套管抗挤强度分析及计算 |
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| 引用本文： | 杜春常,谢光平,刘崇建.深井套管抗挤强度分析及计算[J].西南石油学院学报,1999,21(3):37-40. |
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| 作者姓名： | 杜春常 谢光平 刘崇建 |
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| 作者单位： | 西南石油学院石油工程系!四川南充637001 |
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| 摘 要： | 根据弯曲梁理论，建立了套管柱受非均布外挤压力作用的力学模型；并应用解超静定问题的正则方程和力法准则对该力学模型进行求解，得到了在非均布外挤压力作用下套管圆周上的弯矩、剪力、轴力、应力和位移的分布规律。计算表明，在非均布外挤压力作用下，套管抗挤毁强度大大降低。该力学模型不仅可以解释深井套管挤毁机理，而且可以改进深井套管抗挤强度设计。
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| 关 键 词： | 深井 套管 非均布外挤 抗挤强度 挤毁机理 |
ANALYSIS AND CALCULATION OF CASING COLLAPSE RESISTANCE |
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| DU Chunchang,XIE Guangping,LIU Chongjian.ANALYSIS AND CALCULATION OF CASING COLLAPSE RESISTANCE[J].Journal of Southwest Petroleum Institute,1999,21(3):37-40. |
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| Authors: | DU Chunchang XIE Guangping LIU Chongjian |
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| Affiliation: | DU Chunchang
(Southwest Petroleum Inst)
XIE Guangping,LIU Chongjian |
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| Abstract: | According to bending theory , the authors set up the casing mechanical model under nonuniform collapse ,which is solved by using canonical equation and the distribution of bending moment,shear force,axial force,stress and deformation on the circumference of casing under nonuniform collapse.Calculation shows that the casing collapse resistance decreases greatly under nonuniform loads.Model not only shows good casing collapse mechanism,but also can improve casing collapse resistance design. |
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| Keywords: | deep well casing nonuniform collapse collapse resistance collapse mechanism |
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