N-10 THE ROLE OF PETROPHYSICAL AND SEISMIC MODELLING IN DETERMINING THE FEASIBILITY PARAMETERISATION AND SENSITIVITY OF PRESTACK INVERSION 1 XIN-QUAN MA THOMAS SCHULTE ADRIAN PELHAM and PAUL HASKEY Scott Pickford Group Ltd. 7th Floor Leon House 233 High Street Croydon CR0 9XT UK Introduction Prestack seismic inversion can extract not only compressive information but also shear information about a rock. The shear wave information is present from the variation of reflection coefficients with source-receiver spacing (AVO) in multi-offset seismic data. To detect the lithology and fluid content within reservoirs both P- and S-wave properties of a rock are required. The


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