Unravelling Prospectivity in Foz de Amazonas; a Multi-Physical Approach and Learnings from the Conjugate Tano Basin

With the exploration success starting in Ghana, Tano basin with the Mahogany exploration well, later to be Jubilee field, the Equatorial margin has seen significant success, but there have also been a few disappointing non-commercial and dry well results along the margins on either side. Using all data available may improve the exploration success.

The Foz de Amazonas basin has been perceived to have high potential following the French Guiana discovery at the Zaedyus field.

This paper focuses on unravelling prospectivity in two Cretaceous stratigraphic layers based upon seismic and CSEM. The lowermost plays are perceived to be the Campanian age stratigraphy of a deep marine turbidite channel/fan play in the Foz de Amazonas basin while the uppermost play is probably Maastrichtian. Leads are matured from identification on seismic sandy facies with CSEM anomalies to estimation of probable volume ranges. The interpretation of the data uses learnings from interpretation and well results in the Tano Basin in Ghana and sensitivity work from the Zaedyus work and highlights areas of possible significant prospectivity in the northwestern part of the Foz de Amazonas basin.