| 钻柱在扭转、纵向振动下的疲劳寿命估算 |
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| 引用本文： | 艾池,盖伟涛,王黎明.钻柱在扭转、纵向振动下的疲劳寿命估算[J].大庆石油学院学报,2006,30(4):9-11. |
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| 作者姓名： | 艾池 盖伟涛 王黎明 |
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| 作者单位： | 1. 大庆石油学院,提高油气采收率教育部重点实验室,黑龙江,大庆,163318
2. 大庆石油管理局,钻井生产技术服务公司,黑龙江,大庆,163358 |
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| 摘 要： | 鉴于目前钻柱的疲劳寿命估算多是以单一裂纹理论为基础,不能很好地反映钻柱扭转和纵向振动的共同作用.根据复合型裂纹扩展理论和断裂力学方法,以及钻柱在生产和应用中的表面线性裂纹现象,提出了钻柱在扭转、纵向振动下的疲劳寿命计算模型.应用实例表明,该模型计算方法简单,便于工程应用.
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| 关 键 词： | 钻柱 复合振动 力学分析 疲劳寿命 |
| 文章编号： | 1000-1891（2006）03-0009-03 |
| 收稿时间： | 07 23 2005 12:00AM |
| 修稿时间： | 2005-07-23 |
Prediction of drill string's fatigue life under torsion and axial vibration |
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| AI Chi,GE Wei-tao,WANG Li-ming.Prediction of drill string''''s fatigue life under torsion and axial vibration[J].Journal of Daqing Petroleum Institute,2006,30(4):9-11. |
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| Authors: | AI Chi GE Wei-tao WANG Li-ming |
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| Abstract: | Calculation methods of drill string's fatigue life can not explain the interaction of torsion and axial vibration now, because most of them are based on the theory of single crack. In the paper, Based on the theory of compound crack and fracture mechanics and surface liner cracks of drill string often occurring in process of production and application, a fatigue life model of drill string under the interaction of torsion and axial vibration is established. Field application showed that the calculation method of the model is simple, and easy to apply in engineering. |
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| Keywords: | drill string compound vibration mechanics analysis fatigue life |
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