机械科学与技术2025，Vol.44Issue(5)：759-767,9.DOI:10.13433/j.cnki.1003-8728.20230204
斜井下钻柱系统横-扭耦合非线性动力学特性
Exploring Lateral-torsional Coupled Nonlinear Dynamic Characteristics of Drilling String System in an Inclined Well
摘要
Abstract
To clarify the effects of the contact between a drill string and a borehole wall,the torque dissipation of the drill string,and the borehole's trajectory on the dynamic characteristics of a drill string system,the lateral and torsional coupled nonlinear dynamic model of the drill string in an inclined well is established with the Lagrange equation.The contact behavior between the drill string and the borehole wall is modeled with the linear elastic contact model.Then,the discrete torque-drag model is used for describing the transfer characteristics in the drill string system.Finally,the dynamic properties of the drill string system are determined through numerical simulations.The simulation results indicate that the friction losses of the torque in the drill string system increase with the increasing inclination angle.The stick-slip vibration of the drill string is obvious when the inclination angle of the inclined well in its inclined part becomes big.The effect of the dead weight of the drill string on the vibration of the drill string system is significant as the inclination angle of the inclined well's trajectory becomes big.关键词
斜井/动力学/振动/管柱力学Key words
inclined well/dynamics/vibration/drill-string mechanics分类
机械工程引用本文复制引用
冯群芳,侯勇俊,方潘,杨康,丁书杰..斜井下钻柱系统横-扭耦合非线性动力学特性[J].机械科学与技术,2025,44(5):759-767,9.基金项目
中国石油科技创新基金项目(2020D-5007-0312) （2020D-5007-0312）
