| 下部钻具组合的大变形分析——有限元动坐标迭代法的应用 |
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| 引用本文： | 于永南,帅健,吕英民,蔡强康.下部钻具组合的大变形分析——有限元动坐标迭代法的应用[J].中国石油大学学报(自然科学版),1993(1). |
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| 作者姓名： | 于永南 帅健 吕英民 蔡强康 |
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| 作者单位： | 石油大学机械系
(于永南，帅健，吕英民)，石油大学机械系(蔡强康) |
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| 基金项目： | 八五”国家重点科技攻关课题“水平井眼轨迹控制” |
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| 摘 要： | 把动坐标迭代法应用于下部钻具组合(BHA)的非线性有限元分析。为BHA的非线性分析提供了一种简便而又有效的数值计算方法.给出了动坐标迭代法三维分析时有关变量的计算公式,编制了相应的计算程序,研究了不同井斜曲率和方位曲率对钻头侧向力的影响以及线性分析和非线性分析结果对比.
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| 关 键 词： | 动坐标迭代法 有限元 钻具组合 非线性分析 |
APPLICATION OF FINITE ELEMENT MOVING-COORDINATE REITERATIVE METHOD TO ANALYSIS OF LARGE DEFORMATION OF BHA |
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| Yu Yongnan Shuai Jian Lu Yingmin Cai Qiangkang.APPLICATION OF FINITE ELEMENT MOVING-COORDINATE REITERATIVE METHOD TO ANALYSIS OF LARGE DEFORMATION OF BHA[J].Journal of China University of Petroleum,1993(1). |
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| Authors: | Yu Yongnan Shuai Jian Lu Yingmin Cai Qiangkang |
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| Institution: | Dept. of Mechanical Engineering |
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| Abstract: | Moving-coordinate reiterative method is used for non-linear finite analysis of BHA. It is a simple and useful means of numerical calculation for non-linear analysis of BHA. The formulas of related variables in the 3D analysis with the moving-coordinate reiterative method are given, and a cooresponding calculation program is developed. The effects of inclination and azimuth curvatures on the bit side forces are studied. A comparison of linear and non-linear results is given. |
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| Keywords: | Moving-coordinate reiterative method Finite-element method: bottom hole assembly: Non-linear analysis |
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