| 用牛顿－拉裴逊法分析环空大挠度钻柱问题 |
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| 引用本文： | 刘延强 周书敬. 用牛顿－拉裴逊法分析环空大挠度钻柱问题[J]. 工程力学, 1994, 11(4): 103-108 |
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| 作者姓名： | 刘延强 周书敬 |
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| 摘 要： | 应用牛顿－拉裴逊法分析大挠度钻柱的受力变形，用罚函数法处理待定边界问题，用不同形式的单元描述同方程的不同参量。计算表明了井眼曲率对钻头侧向力的非线性效应。
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| 关 键 词： | 牛顿－拉裴逊法，罚函数法，非线性效应，钻柱 |
LARGE DEFLECTION ANALYSIS OF DRILLSTRING IN ANNULUS USING NEWTON-RAPHSON METHOD |
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| Abstract: | Newton-Raphson method is used in the analysis of drillstring in annulus.Penalty function method is applied to problems with undetermined boundary.Different parameters in the same equation are described by different forms of element.The nonlinear effects of the curvature of wellbore on the lateral forces on bit are shown through the computations. |
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| Keywords: | Newton-Raphson method penalty function method nonlinear effect drillstring |
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