$33.1 Billion www.ecopetrol.com.co ECOPETROL copetrol SA is a company organized as a public limited company, of national order, linked to the Ministry of Mines and Energy. It has operations located in the center, south, east and north of Colombia, as well as abroad. It has two refineries in Barrancabermeja and Cartagena. Through its subsidiary Cenit, specialized in hydrocarbon transportation and l