Feasibility study of integrated electromagnetic, gravimetric, aeromagnetic and seismic sub-basalt exploration techniques

Abstract

The objective of this study was to investigate methods to resolve the problem of mapping basalts and basement in a continental margin setting. It is well known that basalts may trap considerable amounts og hydrocarbons accumulated in sediments below the basalts. A 3D model of the Møre margin offshore Norway was constructed by a forward modelling employing the gravity and magnetic fields. Numerous independent data were used to diminish the nonuniqueness of the method. The resulting model consists of several horizons that divide the main geological bodies in the study area. In addition, two horizins are based on reflection seismic interpretation only. Based on gravity\/magnetic modelling and seismic interpretation, a layer model was constructed in RMS. (...)