Modeling of Borehole Modes Using the Spectral Method

P095 Modeling of Borehole Modes Using the Spectral Method F. Karpfinger* (Curtin University of Technology) B. Gurevich (Curtin University of Technology Australia) & A. Bakulin (Shell International E & P USA) SUMMARY We present algorithm and code that solves the dispersion equation for cylindrically layered media consisting of arbitrary number of solid elastic and fluid layers. The algorithm is based on the spectral method which discretises the underlying wave equations with the help of spectral differentiation matrices and solves the corresponding equations as an generalized eigenvalue problem. For a given frequency the eigenvalues correspond to the wavenumbers of different modes.