Waveform-preserving processing flow of multichannel seismic reflection data for ocean thermohaline structure reconstruction (revisited)

Abstract

Along the advent of 4D seismic exploration, the need to properly compensate spatio-temporal variations in the water column has become of utterly importance for the adequate characterization of reservoirs changes during their exploration phase. In this study we revisit a previously suggested processing flow that is focused on the recovery of oceanographic coherent structures (DAGNINO et al., 2017), and propose some modifications. The main reason for this is our restriction to work with already processed (by 3rd parties) data, that was mostly guided to proper characterization of sub-sea floor geologic structures. We found that our re-processing flow is able to recover signatures of oceanic thermohaline structures, thus having a potential for further inversion focused on detailed water layer velocity reconstruction.