Petroleo Brasileiro S.A.-Petrobras specializes in the oil, natural gas and energy industry. The Company is engaged in prospecting, drilling, refining, processing, trading and transporting crude oil from producing onshore and offshore oil fields and from shale or other rocks. Its segments include Exploration and Production, which covers the activities of exploration, development and production of crude oil, natural gas liquid and natural gas; Refining, Transportation and Marketing, which covers the refining, logistics, transport and trading of crude oil and oil products activities, exporting of ethanol, and extraction and processing of shale; Gas and Power, which is engaged in transportation and trading of natural gas produced in Brazil and imported natural gas; Biofuels, which covers the activities of production of biodiesel and its co-products, and ethanol-related activities; Distribution, which includes the activities of its subsidiary Petrobras Distribuidora S.A., and Corporate..