摘要
本文从理论上研究了钻井液流动速度对钻柱横向振动的影响问题.建立了一个考虑比较全面的钻柱横向振动微分方程,给出了钻柱横向振动固有频率与钻井液流速之间的关系式,讨论了钻井液流动速度变化引起钻柱振动直到失稳的发展过程,并分析和探讨了其影响的力学机理.
This paper studies Theoretically the affection of flowing Velocity of drilling fluids on the lateral vibration of the drilling string.A welleonsidered differential equation of the lateral vibration of the drilling string is built.A formula between the inherent frequency and the flowing velocity of drilling fluids is given,and the developing process of drilling string from vibration to unstable state by the change of the flowing velocity of drilling fluids is discussed.The mechanism of the affection is analysed and discussed.
出处
《西安石油学院学报》
1993年第2期15-19,57,共6页
Journal of Xi'an Petroleum Institute
关键词
钻柱
横向振动
钻井液
流动速度
lateral vibration of drilling string,flowing velocity of drilling fluids,inherent frequency
