Abstract

Seismic sub-basalt imaging is challenging and leads to a large degree of uncertainty. This paper considers how marine EM methods (CSEM and MT) can reduce uncertainty by providing structural and resistivity information about basalt and the sediments below. In order to demonstrate the capability of this technology, we will present two recent studies: 1) Imaging of synthetic data from a realistic model based on well-log and seismic data, and, 2) a field data example. These studies show how EM data can improve interpretation certainty with structural and quantitative information in the inverted resistivity models and potentially improve velocity models for seismic imaging.