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Joint PP-PS Inversion Based on The Reflectivity Method
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
AVO inversion is the most commonly used practice in seismic exploration. Although quite successful, it has inherent assumption that the amplitude of seismic data only depends on the reflection coefficients, neglecting the wave propagation effects, which leads to unreliable inversion results. Hence wave propagation effects should be fully corrected before inversion. However, it is not always achievable, for example, the compensation of transmission loss and multiples removal in thin-interbed are next to impossible. In this paper, we propose a joint PP-PS inversion based on the reflectivity method to makes up aforementioned deficiency of traditional AVO inversion. The reflectivity method assumes the underground is layered media and is able to simulate full wave field, including the reflection, transmission, transformation of all wave forms, and even multiples, which means that the transmission loss and multiples can be considered in our inversion technique. Therefore, seismic data of thin-interbed with transmission losses and multiples can be directly input for inversion and achieve accurate results. The application on a numerical model and real data demonstrate the validity and accuracy of this method.