Multiples are events in the seismic record that have undergone more than one reflection. They cannot be imaged the same way as primary reflections, and consequently, they are often treated as “unwanted” events. Elimination of multiples is an integral part of the conventional imaging workflow. Significant effort is spent to attenuate these “unwanted” events, with mixed results in practice. In recent years, The Leading Edge has dedicated three special sections to multiple elimination (1999, 2005, and 2011). Those editions detail the evolution of theory and applications of multiple removal. On the other hand, imaging of multiple reflections has seen much less attention and has been limited to a few academic groups. This special section highlights several challenges in imaging with multiples. We review the handling of multiples from attenuation to imaging while we focus on new strategies that use multiples for enhanced imaging.

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