F018 Fluid Detection by Spectral Decomposition – Lessons from Numerical Physical Modelling and Field Studies J. Zhang* (University of Edinburgh) M. Chapman (British Geological Survey) E. Liu (British Geological Survey) X.Y. Li (British Geological Survey) S. Wang (China University of Petroleum) & Z. Liu (CNPC Science & Technology Dept.) SUMMARY This paper investigates the use of spectral decomposition techniques to detect fluid saturation through studies on field data physical modelling data and numerical modelling. The main mechanisms which control the spectral response are fluid-sensitive tuning together with attenuation and dispersion for reflected waves. In many cases the direct transmission loss


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