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直接找油找气,是地球物理勘探工作者多年来奋斗的目标。它不但要利用地震反射波的运动学特征,也要利用动力学特征,诸如振幅、相位、频率等等。本文从理论上导出了地震反射波的数学表达式,并对提取所包含的一些有用的几何—物理信息的方法,作了必要的分析。文中采用希尔伯特变换法分析地震反射波的频谱,它比傅氏变换法更为简单。本文还讨论了瞬时频率在直接找油找气方面应用的可能性。
Looking for oil directly, is the goal of geophysical exploration workers over the years. Not only does it make use of the kinematic features of seismic reflections, but it also takes advantage of dynamical features such as amplitude, phase, frequency, and more. This paper theoretically deduces the mathematical expression of seismic reflection wave, and makes some necessary analysis on the method of extracting some useful geometric-physical information. In this paper, Hilbert transform method is used to analyze the spectrum of seismic reflection wave, which is more simple than Fourier transform method. This article also discusses the possibility of using instantaneous frequencies for finding oil directly.