Internal Multiple Attenuation without Subsurface Information

We present an approach to extend Jakubowicz’s method for attenuating internal multiples such that no information about the multiple generators is required in the modelling process. The approach is based on fulfilling the 'lower-higher-lower' relationship used in inverse scattering series (ISS) for internal multiple modelling, and approximating the pseudo-depth monotonicity condition mentioned in ISS. We describe our implementation steps and discuss the differences between ISS and our approach. We show the application of these two methods for handling internal multiples on Santos Basin data and present results on both the synthetic and field data from the Tupi oilfield.