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7th International Conference & Exposition on Petroleum Geophysics

The Use of Aeromagnetics and Airborne Gravity in Petroleum Exploration

Published in GEOHORIZONS - 2008

Dr Peter Elliott

Abstract


Airborne magnetics and gravity have been used widely in the past for surveying large areas as a way of mapping out basins and basement structures. These methods have often been used as a precursor to seismic surveys as a way of highlighting possible target areas for stratigraphic or structurally controlled oil traps. With the improvement in sensitivity and resolution of these two methods it is now possible to map in more detail the actual oil traps and provide high resolution data to aid seismic interpretation. In addition to hardware improvements, in the last decade we have witnessed a great improvement in 3D modeling techniques (Fernando et al, 2007). It is now possible to create a 3D Inversion Model for both gravity and magnetics within a short time. The detailed 3D model provides magnetic susceptibility and density information that is indispensable for aiding seismic interpretation and filling in the gaps been seismic survey lines.

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