随机载荷作用下钻柱振动响应的研究

VIBRATION RESPONSE OF DRILLSTRING UNDER THE ACTION OF RANDOM LOADS

应用随机振动理论着重研究了钻柱系统在随机荷载作用下的振动响应，并研究了钻柱系统的振动特征及振动传递规律，为以后有效诊断钻头在井下的工作情况。

By using the theory of random vibration, the vibration response of drillstring under the action of the random loads is studied in the paper. And the vibration characteristics and the law of vibration transfer of drillstring are studied. It is a basical theory to effectively diagnose the bit′s state downhole and to analyse the realibility of the bit and drillstring.