Integrated workflow for shallow hazard detection using imaging, inversion, pore-pressure prediction, and interpretation on 3D seismic data

摘要

Offshore drilling must plan and mitigate several hazards in the shallow sediments below the seabed that represent significant drilling risk in terms of cost, safety, and environment. To identify and quantify the risks associated with shallow hazard zones prior to drilling, we propose an integrated workflow that uses high-resolution seismic imaging, prestack inversion, pore-pressure prediction, geological interpretation, and seismic attribute analysis. We use a rock-physics-guided velocity model to derive a low-frequency model for prestack inversion and pore-pressure prediction using a high-resolution image for detailed interpretation and seismic attributes.