相控阵震源对叠前AVO的精度影响理论分析

【摘要】 在石油地震勘探中,信号采集所面临的最突出的困难是微弱的反射信号常常淹没在很强的背景噪声之中.为了提高地震记录的信噪比,可以利用多台可控震源阵列实施相位控制形成定向地震波束以增强地震波在某个方向上能量,本文讨论这种相控阵震源的波束形成机制,以及在运用AVO反演方法时,如果采用相控阵所激发后的所采集的地震资料,对造成AVO的精度值误差的理论分析。更多还原

【Abstract】 In the oil seismic exploration,The most difficulty of signal acquisition is that the weak reflected signals are often submerged in strong background noise into.For Increasing signal-noise ratio of seismic records,one can make use of vibrator arrays by phase controlling to concentrate seismic waves into a directed beam so as to enhance the energy of seismic waves.This article discusses forming mechanism of Phase array vibrators,as well as in the use of AVO inversion method,if we use the seismic data acquired by Phase array vibrators exciting,Theoretically,causing the accuracy error of AVO.更多还原