Oil was discovered on December 13, 1907 in Comodoro Rivadavia. The production areas are close to the towns of Caleta Olivia, Pico Truncado and Las Heras in Santa Cruz; Comodoro Rivadavia, Pampa del Castillo. Km 20 and others in Chubut. The generation of hydrocarbons requires a long geological time for their formation and accumulation, the oil-bearing rocks are found at a depth of approximately 2000 meters.