BOGOTA, Colombia, March 19, 2013 /PRNewswire/ -- Ecopetrol S.A. (BVC: ECOPETROL; NYSE: EC; TSX: ECP) reports that it has proven the presence of heavy crude oil at Pastinaca 1, an exploratory well located within the municipality of Puerto Lopez, Meta Province. (Logo: http://photos.prnewswire.com/prnh/20090209/ARM001LOGO ) The well is part of the CPO-10 Exploration and Production Agreement of December 18, 2008 between Ecopetrol and the National Hydrocarbons Agency. Initial tests carried out on the Pastinaca 1 well using an electro-submersible artificial lift, yielded an average crude oil production of 202 barrels of oil per day (BOD) of 11.7 ° API (heavy crude) and a water cut of 80%. Accumulated production to date is more than 1,448 barrels of oil. The Pastinaca 1 well is the first hydrocarbons discovery in a well 100% owned by Ecopetrol since the beginning of 2013. The Company plans to continue its exploratory activities on block CPO-10 in the months to come. For more information, please contact: Director of Investor Relations Alejandro Giraldo Telephone: +571-234-5190 Fax: +571-234-5628 E-mail: email@example.comMedia Relations ( Colombia) Jorge Mauricio Tellez Telephone: +571-234-4329 Fax: +571-234-4480 E-mail: firstname.lastname@example.org SOURCE Ecopetrol S.A.