Graña y Montero Petrolera (GMP) is a subsidiary of Peruvian engineering company Graña y Montero S.A., and engages in the operation of infrastructure for the oil, gas, chemicals and energy industries. It was created in 1984 and conducts oil and gas exploration and production activities in northeastern Peru (Organos, Talara and Paita). The firm owns and operates an associated natural gas processing plant, made up of natural gas processing substations in Talara for production of power, liquefied petroleum gas and natural gas condensates; and Transportadora de Gas Natural Andino, which deals with compressed natural gas and vehicular gas storage and distribution. The firm also operates nine liquid hydrocarbons storage terminals in Peru, run by Consorcio Terminales (CT), a firm owned by GMP and Oiltanking Perú S.A.C. In addition, it provides maintenance and operation services for facilities related to the liquid hydrocarbons and chemicals logistics chain, run by Oiltanking Andina Services (OTAS), a firm owned by GMP and Oiltanking Perú GmbH. GMP is headquartered in Lima.