Abstract

FALCON airborne gravity gradient and aeromagnetic data are recently acquired over Chirete Block, onshore northern Argentina. These two data sets are integrated with the existing 2D seismic data to unravel the geogical targets for hydrocarbon exploration. The main project objective was to map the basement and associated major structural elements for the oil-and-gas prospect selection. 2D seismic depth sections were used as initial constraints for 2.5D and 3D gravity and magnetic modeling. Well log densities and velocities are also constrained in this modeling process. Several gravity and magnetic data enhancements were generated and used for mapping of tectonic framework. The basement depth estimates are computed from the total magnetic intensity profile data. The Werner, Euler, and Peters half slope techniques are used in basement depth computations as well as the depths to the magnetic sources within the sedimentary section.