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AVAZ Quantitative Interpretation Based on Orthorhombic Medium-Part One: Rock Physics Modeling
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
In this paper, we build the orthotropic rock physics model for shale reservoirs, the model consider the factors of clay lamination, kerogen lamination, horizontal fractures and vertical fractures, it’s based on effective medium theories including Backus average method( Backus, 1962 ), Anisotropic DEM model( Hornby, 1994 ), Schoenberg linear slip theory( Schoenberg, 1997 ). The study shows that there is a better fitting effect of elastic parameters based on orthotropic rock physics model. In addition, we can provide a good anisotropic low frequency model for inversion based on orthorhombic medium. In real data, the orthotropic rock physics model is successfully applied to shale reservoirs in Sichuan Basin of China, it shows that the result is more reasonable and effective.