1. University of Campinas; Center for Petroleum Studies; Rua Cora Coralina, 350, Cidade Universitária 13089-970 Campinas São Paulo Brazil
2. National Institute of Petroleum Geophysics (INCT-GP); Salvador Bahia Brazil
3. Federal University of Latin America Integration; Avenida Silvio Americo Sasdelli, 1842, Vila A 85866-000 Foz do Iguaçu Paraná Brazil