【摘要】 由于薄层的调谐效应直接影响真振幅地震资料解释,因此,本文提出一种去调谐振幅的新方法—相位拟合法,利用相位信息去除薄层的调谐效应从而获得与地下岩石物理性质直接相关的反射振幅.从第1类AVO实例以及实际地震资料的处理效果图证实该方法可以得到令人满意的去调谐振幅值,而且该方法能够不受地震子波类型和相位的约束,可以处理调谐地层的去调谐难题,并且,具有较弱的噪音敏感特点.更多还原

【Abstract】 Detuning effect in thin beds is a tough issue in seismic amplitude interpretation.This paper suggests a new method,named the phase fitting method from the view of phase information striving for getting rid of tuning effect in thin beds.The purpose of our work is to get those true seismic amplitudes related to rock properties back.We take class an 1 AVO case and real seismic data set as examples to validate this new method.The results we get are acceptable and encouraging.The key of the new method is that the method has characteristics of non-wavelet limit, large range of depth and weak sensitive to noise.更多还原