Premigration Deghosting for Marine Streamer Data Using a Bootstrap Approach in Tau-P Domain

Removing the receiver ghost before migration provides better low and high frequency response as well as a higher signal-to-noise ratio. We recognize these benefits for preprocessing steps like multiple suppression and velocity analysis. In this paper, we modify a previously published bootstrap approach that self-determines its own parameters for receiver deghosting in a t-x window. Similarly to the t-x bootstrap method, the recorded data in the shot domain are first used to create mirror data through a 1D ray-tracing-based normal moveout correction method. The recorded and mirror data are then transformed into tau-p domain and used to jointly invert for the receiver-ghost-free data. We apply this new algorithm to a field data set with a streamer depth of 27 m. Our deghosting method effectively removes the receiver ghost and the resulting image has broader bandwidth and a higher signal-to-noise ratio.