井下钻柱纵向横向耦合振动模型建立与数值分析

田家林; 吴纯明; 杨勇文; 姚宇; 杨志; 袁长福; 吴波

doi:10.21656/1000-0887.370214

井下钻柱纵向横向耦合振动模型建立与数值分析

doi: 10.21656/1000-0887.370214

¹西南石油大学机电工程学院, 成都 610500;²西南交通大学机械工程学院, 成都 610031;³中国石油集团川庆钻探工程有限公司川西钻探公司, 成都 610000

基金项目: 国家自然科学基金(51074202)；国家科技重大专项(大型油气田及煤层气开发)(2016ZX05038)；国家留学基金(201608515039)

详细信息

作者简介:
田家林（1979—），男，副教授，博士，硕士生导师(E-mail: tianjialin001@gmail.com; 309009838@qq.com)；吴纯明（1991—），男，硕士生(通讯作者. E-mail: 1769752908@qq.com).

中图分类号: TE921
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出版历程
- 收稿日期: 2016-07-13
- 修回日期: 2016-08-19
- 刊出日期: 2017-06-15

Numerical Analysis of Downhole Drill Strings With a Longitudinal and Lateral Coupled Vibration Model

¹School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, P.R.China;²School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P.R.China;³Western Sichuan Drilling Company, Chuanqing Drilling Engineering Co., CNPC, Chengdu 610000,P.R.China

Funds: The National Natural Science Foundation of China(51074202);The National Science and Technology Major Project of China(2016ZX05038)

摘要

摘要: 针对井下钻柱运动的复杂性，基于动力学理论，建立了井下钻柱纵向和横向耦合振动的数学模型，并进行数值求解及分析.根据井下钻柱的实际工况，以整个井下钻柱为研究对象，提出了钻柱纵向和横向耦合振动的动力方程，并利用解析法和无量纲法分别求解出其动刚度和动阻尼的表达式，以及钻柱前两阶振动的固有频率.分析结果表明：当井下钻柱振动频率增大时，其动刚度呈幅值衰减的周期性变化，而其动阻尼呈幅值增强的周期性变化；井下钻柱长度和横截面面积越大，其动刚度和动阻尼的幅值越小；井下钻柱的Poisson(泊松)比对其振动的动刚度、动阻尼和前两阶固有频率没有影响；同时，井下钻柱的第二阶固有频率始终大于第一阶固有频率.该文的研究方法和模型为井下钻柱钻具分析和结果优化提供了理论参考和实际意义.
- 井下钻柱 /
- 耦合振动 /
- 刚度 /
- 阻尼 /
- 固有频率
Abstract: Aimed at the complicated motion of the downhole drill string and based on the existing dynamics theory, the longitudinal and lateral coupled vibration model for the drill strings was established, and the numerical solution was obtained. According to the actual working condition of the downhole drill string, the entire drill string was regarded as the object of study. The concrete expressions of the dynamic stiffness, dynamic damping and the 1st 2 orders of natural frequencies were deduced with the analytical method and the dimensionless method in view of the coupled vibration characteristics of the downhole drill string. The research findings reveal that when the vibration frequency of the downhole drill string increases, the dynamic stiffness will periodically change with amplitude attenuation and the dynamic damping will periodically change with amplitude enhancement. The greater the length and the cross-sectional area of the downhole drill string are, the smaller the vibration amplitudes of the dynamic stiffness and the dynamic damping will be. Moreover, the Poisson’s ratio of the downhole drill string has no effect on the dynamic stiffness, the dynamic damping and the 1st 2 orders of natural frequencies. Meanwhile, the 2nd-order natural frequency of the drill string is always greater than the 1st. The proposed methods and model provide theoretical references and practical significances for further analysis and design optimization of the bottom-hole assembly (BHA).
- downhole drill string /
- coupled vibration /
- stiffness /
- damping /
- natural frequency

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参考文献(19)

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井下钻柱纵向横向耦合振动模型建立与数值分析

doi: 10.21656/1000-0887.370214

作者简介:
田家林（1979—），男，副教授，博士，硕士生导师(E-mail: tianjialin001@gmail.com; 309009838@qq.com)；吴纯明（1991—），男，硕士生(通讯作者. E-mail: 1769752908@qq.com).

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Numerical Analysis of Downhole Drill Strings With a Longitudinal and Lateral Coupled Vibration Model

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留言板

井下钻柱纵向横向耦合振动模型建立与数值分析

doi: 10.21656/1000-0887.370214

作者简介: 田家林（1979—），男，副教授，博士，硕士生导师(E-mail: tianjialin001@gmail.com; 309009838@qq.com)；吴纯明（1991—），男，硕士生(通讯作者. E-mail: 1769752908@qq.com).

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出版历程

Numerical Analysis of Downhole Drill Strings With a Longitudinal and Lateral Coupled Vibration Model

计量

出版历程

目录

作者简介:
田家林（1979—），男，副教授，博士，硕士生导师(E-mail: tianjialin001@gmail.com; 309009838@qq.com)；吴纯明（1991—），男，硕士生(通讯作者. E-mail: 1769752908@qq.com).