Multicomponent AVO Inversion Using Simulated Annealing

D-16 MULTICOMPONENT AVO INVERSION USING SIMULATED ANNEALING Summary 1 The combination of AVO/AVA analysis of P(PP)-wave and converted C(PS)-wave data with seismic inversion offers new possibilities for fluid detection and lithology prediction. Unlike most conventional inversion schemes which use single-mode waves in the inversion process our inversion method simultaneously reconciles amplitude and time information from both PP-wave and PS-wave data. The inversion method used is a 1-D globally optimized seismic inversion technique using a variant of simulated annealing in which the parameter step length is automatically adjusted during the cooling schedule ensuring that half of the function evaluations are accepted