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随多波多分量地震勘探的发展,PP波和PS波联合反演方法研究在近年取得了一定进展。PS波是S波的一种,无法在流体中传播,因此对岩石组构的内部构造更为敏感。联合使用PP波和PS波数据,可以提高从多波地震数据中推导弹性阻抗和岩石性质参数的能力,减少地震反演中的不确定性。本文综述近年PP波和PS波联合反演方法的发展。简述了PP波和PS波联合反演的基本理论,所有的联合反演方法都是基于PP波和PS波反射系数的Aki-Richards近似公式。其次,常用联合反演方法的算法及其反演结果参数。因为使用了相互独立的PP波和PS波数据,联合反演方法的算法比单独的PP波反演更为稳定。展望了PP波和PS波联合反演方法的发展趋势。
With the development of multi-wave and multi-component seismic exploration, the joint inversion of PP wave and PS wave has made some progress in recent years. A PS wave is a type of S-wave that does not propagate in the fluid and is therefore more sensitive to the internal structure of the rock fabric. The combined use of PP and PS wave data can improve the ability to derive elastic impedance and rock property parameters from multi-wave seismic data and reduce the uncertainty in seismic inversion. This article summarizes the development of the joint inversion method of PP wave and PS wave in recent years. The basic theory of joint inversion of PP wave and PS wave is briefly described. All joint inversion methods are based on the Aki-Richards approximation formula of PP wave and PS wave reflection coefficient. Second, the commonly used joint inversion method of the algorithm and its inversion results parameters. Because of the use of independent PP wave and PS wave data, the joint inversion method is more stable than the PP wave inversion alone. The development trend of joint inversion of PP wave and PS wave is prospected.