摘要
在石油钻井过程中,钻柱的运动过程相当复杂,不仅存在纵向、横向和扭转振动,而且还与井壁发生随机接触碰撞。在考虑钻头与岩石互作用随机载荷以及钻柱与井壁接触碰撞随机载荷作用下,建立实态工作状态下钻柱与井壁互作用下钻柱系统纵向、横向、扭转耦合非线性动力学模型,研究高度耦合非线性动力学模型的数值计算方法,探讨钻柱在钻井过程中运动规律、力学性能,为实态工作工况下钻柱系统耦合非线性动力学奠定理论基础,具有重要的理论意义和学术价值。
In the processof drilling well, the kinematics of drill string is quite complicated. The drill string not only vibrates in longitudinal, transverse and torsional direction, but also random impacts and contacts well wall. Considering random load of drill bit and rock, contact impact of drill string and well wall, nonlinear dynamic model of drill string system coupling longitudinal, transverse and torsional vibration is set up, numerical method of parameter of high nonlinear dynamic model is studied, kinematics law, mechanical property of drill string are discussed. This can establish foundation for nonlinear dynamic theory of drill string system coupling vibration in the actual work condition, and has important theory significance and academic value.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2007年第5期145-149,共5页
Journal of Mechanical Engineering
基金
国家自然科学基金(90410004)
新世纪优秀人才计划(NCET-05-0766)
重庆市科委自然科学基金计划(2006BB3208)资助项目
关键词
钻柱
动力学
有限元
接触碰撞
耦合分析
Drill string
Dynamic
Finite element
Contact impact
Couple analysis
