Ecopetrol, formerly known as Empresa Colombiana de Petróleos S.A. (English: Colombian Petroleum Co.). Ecopetrol is the largest and primary petroleum company in Colombia. As a result of its continuous growth, Ecopetrol forms part of the Fortune Global 500 and was ranked 346. It was ranked 303 in 2012 by CNN Money. The company belongs to the group of 25 largest petroleum companies in the world, and it is one of the four principal petroleum companies in Latin America.