New Hydrocarbons Discovery in Huila

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    - Nunda-1 Well produced 92 barrels of oil per day during initial testing

    - Ecopetrol has 100% stake





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BOGOTA, Colombia, April 25, 2011 /CNW/ -- Ecopetrol (NYSE: EC; BVC: ECOPETROL; BVL: EC; TSX: ECP) informs that it has found the presence of hydrocarbons in the Nunda-1 well, located in the municipality of Tello in Huila province.

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    (Logo: http://photos.prnewswire.com/prnh/20090209/ARM001LOGO)

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The well is part of the Cuisinde Exploration and Exploitation Agreement of 2006 between Ecopetrol and the National Hydrocarbons Agency, ANH in which the company holds a 100% stake.

Drilling at the well began on January 27, 2011, reaching a total depth of 7,371 feet three weeks later, the equivalent of 2.25 kilometers from the surface.

Preliminary testing on the Honda formation showed a flow volume of 318 barrels, with a 71% water cut, yielding an average of 92 barrels of oil per day. The quality of the crude is 30 degrees API.

Ecopetrol will begin appraising the find in the weeks ahead, with extensive tests planned in order to determine the production potential of the Honda formation and the volume of recoverable hydrocarbons.

The discovery opens up a new era for Ecopetrol by branching out to new types of exploration activities involving stratigraphic traps (those in which hydrocarbons accumulate due to variations in the deposit environment) in the Valle Superior del Magdalena and helps increase reserve inventories in this area of the country.

Ecopetrol is Colombia's largest integrated oil & gas company, where it accounts for 60% of total production. It is one of the top 50 oil companies in the world and among the top four in Latin America. The Company is also involved in exploration and production activities in Brazil, Peru and the United States Gulf Coast, and owns the largest refinery in Colombia, most of the network of oil and multiple purpose pipelines in the country, petrochemical plants, and it is entering into the biofuels business.

This release contains forward-looking statements relating to the prospects of the business, estimates for operating and financial results, and those related to growth prospects of Ecopetrol. These are merely projections and, as such, are based exclusively on the expectations of management concerning the future of the business and its continued access to capital to fund the Company's business plan. Such forward-looking statements depend, substantially, on changes in market conditions, government regulations, competitive pressures, the performance of the Colombian economy and the industry, among other factors; therefore, they are subject to change without prior notice.

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    For more information, please contact:





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Director of Investor Relations Alejandro Giraldo Telephone: +571-234-5190 Fax: +571-234-5628 Email: investors@ecopetrol.com.co

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Media Relations (Colombia)Jorge Mauricio Tellez Telephone: + 571-234-4329 Fax: +571-234-4480 Email: mauricio.tellez@ecopetrol.com.co

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SOURCE Ecopetrol S.A.

For further information: Web Site: http://www.ecopetrol.com.co


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