| 旋转钻柱环空动力学问题的研究 |
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| 引用本文： | 刘延强.旋转钻柱环空动力学问题的研究[J].计算力学学报,1993,10(3). |
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| 作者姓名： | 刘延强 |
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| 作者单位： | 石油大学机械系 山东东营 |
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| 摘 要： | 本文分析了环空状态下的工作钻柱与井壁的接触机理,建立了钻柱与井壁动态摩擦接触的一般模型,提出了解决待定边界问题及钻柱动态分析的计算方法。计算说明不同工况下,钻柱与井壁具有不同的接触形式。
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| 关 键 词： | 钻柱 环空 接触 井壁 待定边界 |
A Study of Dynamics of the Spinning Drillstring in Annul us |
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| Liu Yanqiang.A Study of Dynamics of the Spinning Drillstring in Annul us[J].Chinese Journal of Computational Mechanics,1993,10(3). |
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| Authors: | Liu Yanqiang |
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| Abstract: | The mechanics of contact between working drillstring in annulus and wellwall is analysed, and a general model of dynamic friction contact between drillstring and wellwall is established, and a computation method of solving unknown boundary problem and dynamic analysis of drillstring is advanced. The computations show that there are different contact forms between drillstring and wellwall in different working conditions. |
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| Keywords: | contact annalus drill string wellwall unknown boundary |
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