Increasing the CSEM application window; Extracting regional structures

CSEM is generally perceived as being a low-resolution method used exclusively for hydrocarbon detection. In this paper, we introduce a methodology which has proven to be robust for structural extraction using wide-azimuth 3D CSEM data. By tracking variations in the electrical anisotropy of sediments and by utilizing imaging attributes, we show that large scale structural information can be reconstructed and can be used where seismic data coverage is sparse. Through an iterative process, the end product will be a structurally guided resistivity cube.