Vibration and offset of riser system in marine drilling under the alternating action of wave force, if terrible, may cause failure of drilling tools and break-off of drilling.

• 海洋钻井隔水管在交变载荷波浪力作用下发生振动，从而偏离原来的位置，严重时可使钻具遭到破坏，造成钻井中断。