Ecopetrol, formerly known as Empresa Colombiana de Petróleo S.A. 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. In the 2020 Forbes Global 2000, Ecopetrol was ranked as the 313th -largest public company in the world. It was ranked 303 in 2012 by CNN Money. Ecopetrol should not be confused with the US owned and operated Colombian Petroleum Co. and sister company South American Gulf Oil Co., dating to the 1930s and taken over by the state owned Ecopetrol in the 1970s. Wikipedia