Multiple attenuation via predictive deconvolution in the radial domain

Marco A. Perez and David C. Henley

ABSTRACT

Predictive deconvolution has been predominantly used as a method for attenuating multiples. The inconsistency of vertical spacing and amplitude of a primary and its corresponding multiples hinders the feasibility of applying this method to shot gathers. Algorithms used to overcome this problem may select a new operator and gap length for each trace with increasing offset. An alternative, less tedious method is presented which maps the shot gather into a more suitable domain. This approach utilizes the invariability between spacing of multiples and primary reflections for a larger range of offsets in the radial domain. The results indicate better attenuation of multiples for shot gathers in the radial domain and less sensitivity of the choice of operator length and stability factor in predictive deconvolution.

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