| 弹性钻柱两个特殊点的意义及计算方法 |
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| 引用本文： | 高德利,韩志勇.弹性钻柱两个特殊点的意义及计算方法[J].中国石油大学学报(自然科学版),1987(1). |
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| 作者姓名： | 高德利 韩志勇 |
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| 作者单位： | 华东石油学院钻井教研室
(高德利)，华东石油学院钻井教研室(韩志勇) |
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| 摘 要： | 通过分析钻柱的应力和应变状态,对钻柱的中性点和零轴向力点给出了新的定义和计算方法,并阐述了稳定力和屈曲力(通称为虚轴向力)的概念。导出了处在垂直井眼中的复合钻柱的有关计算公式。文中还与原有的研究结论进行了对比分析,并提出了不同意见。本文以钻柱为研究对象,所得的结果可以推广应用到套管柱及油管柱上。
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| 关 键 词： | 钻井工具 中性点 计算方法 |
THE DEFINITION OF TWO SPECIAL POINTS OF DRILL STRING AND CALCULATION METHODS |
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| Gao Deli Han Zhiyong.THE DEFINITION OF TWO SPECIAL POINTS OF DRILL STRING AND CALCULATION METHODS[J].Journal of China University of Petroleum,1987(1). |
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| Authors: | Gao Deli Han Zhiyong |
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| Institution: | Gao Deli Han Zhiyong |
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| Abstract: | On the basis of stress and strain in drill string, this paper gives new definitions and calculation methods for the neutral point and the zero axial force point in drill string. The concepts of stabilized force, buckling force and fictitious axial force are described. The calculation formulas for the compound drill string in straight hole have been derived. In comparison with other research, the result of this paper is popular and can be applied to analyze casing string and tubing. |
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| Keywords: | Drilling tool Neutral point Computational method |
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