Reviving a Mature Basin through High-end Imaging Technology

This paper highlights compelling imaging improvements achieved through modern high-end reprocessing in Gippsland Basin. The area of study, largely represented by the Bass Canyon, has strong exploration potential but is high risk. The major challenges in this region are related to geologic complexity and a seismic imaging limitation, i.e.: a) extensive velocity anomalies leading to velocity uncertainties and false structural closures that increase drilling risk; b) strong noise interference and limited imaging clarity that affects AVO analysis. By integrating the modern techniques of 3D deghosting, full waveform inversion (FWI) and least-square Q pre-stack depth migration (LSQPSDM), the newly reprocessed data yields substantial added value over legacy datasets, resulting in an improved understanding of the subsurface geology and clearer prospect mapping. This reprocessing approach demonstrates that even in basins that are considered mature that new ideas and technology can change long-held perceptions and rejuvenate exploration interest.