HOUSTON, May 14 (Reuters) - Colombia's state-run Ecopetrol launched a tender to buy a 68,000-70,000 barrel cargo of ultra low-sulfur diesel (ULSD) and a 91,000-95,000 barrel cargo combining ULSD and gasoline, according to a document seen by Reuters on Wednesday.
The shutdown of a key pipeline in Colombia since March has affected the oil company and other producers in the Andean country. Exports of medium Vasconia crude have declined in recent weeks, according to traders.
The company said in the invitation that it will receive the cargoes in the U.S. Gulf Coast or in the Buenaventura port in Colombia from May 27 to June 16.
The combined cargo must contain 68,000-70,000 barrels of ULSD and 23,000-25,000 barrels of gasoline RON 92, it added.
Ecopetrol bought two previous cargoes of gasoline RON 92 and diluent naphtha this month, to be received from May to June. (Reporting by Marianna Parraga; Editing by)