Petro Rio SA explores and produces oil and gas in Brazil and abroad. It produces hydrocarbons in the Polvo field. Petro Rio operates in the oil and gas exploration and production sector in Brazil and abroad. It is also involved in providing consulting services and environmental research projects, oil, natural gas and mining, providing professional consulting services to companies in the areas of collection, chemical analysis (organic and inorganic), and interpretation of geological, geochemical, geophysical and remote sensing survey data, as well as consulting services for foreign trade. The main revenues come from operations abroad.