Simultaneous Joint Inversion of Seismic and Magnetotelluric Data for Complex Sub-salt Depth Imaging in Gulf of Mexico

摘要

We present the first application of the 3D simultaneous joint inversion (SJI) between seismic and marine magnetotelluric data over the northern Gulf of Mexico. Interpreting the complex salt structures is a key to understand and create accurate tomographic velocity models, which in turn, are necessary to properly position and image the subsalt targets in the framework of the geophysical exploration. SJI collects seismic and non-seismic information into a single-objective function to be inverted, as opposed to the multiple functions inverted by both single-domain approaches. SJI enhances the ambition of improving the existing velocity models for prestack depth migrations and the consistency of seismic and non-seismic representations of the subsurface in complex salt geometries.