“…However, productivity declined, even though it stabilized, for some decades, in a production of approximately 2,000 BOPD (Guardado et al, 1990;Bruhn et al, 2003). The Brazilian fields case has two highlights: the first is that igneous rocks and their thermal influence have a secondary importance, as it happens in other countries, even though they are quite common in sedimentary basins (Thomaz Filho et al, 2008;Costa et al, 2016;Miranda et al, 2018;Penna et al, 2018;Cioccari & Mizusaki, 2019;Fornero et al, 2019;Correia et al, 2019;Avellar & Pereira, 2019); and second is about the complexity in offshore regions added to the presence of the pre-salt, especially in prospects of microbial carbonates and coquinas, as noted by De Luca et al (2015). In other words, better understanding the igneous rock can improve the characterization of reservoirs (sometimes in a complex geology site) as a whole, in the oil system in general, since its presence is recurrent in many prospects.…”