Equion, affiliate of Ecopetrol, Reports the Presence of Gas in the Mapale-1 Well Offshore the Caribbean Coast of Colombia

Equion, affiliate of Ecopetrol, Reports the Presence of Gas in the Mapale-1 
Well Offshore the Caribbean Coast of Colombia 
BOGOTA, Colombia, Nov. 7, 2012 /CNW/ - Ecopetrol S.A. (BVC: ECOPETROL; NYSE: 
EC; TSX: ECP) reports that its affiliate Equion Energia, the operator of the 
exploratory well Mapale-1 drilled in the waters of the Caribbean Sea off 
Colombia's coast, has indicated that fluid tests and recordings carried out on 
the well show the presence of dry natural gas. 
(Logo: http://photos.prnewswire.com/prnh/20090209/ARM001LOGO) 
With exploratory drilling complete, Equion Energia will begin the technical 
evaluation phase, which will take into account the well's results and 
previously acquired seismic data in the area, in order to determine the 
potential of the gas discovery. 
The Mapale-1 well was drilled offshore on Block RC5, an area awarded by the 
ANH in 2007. Equion Energia is the operating company and has a 40.56% stake 
and the other partners are Ecopetrol with a 32% stake and Petrobras with a 
27.44% stake. 
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 the fourth largest oil company 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 main refineries in Colombia, most of 
the network of oil and multiple purpose pipelines in the country, 
petrochemical plants, and 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. 
Contact us for any additional information: 
Investor Relations  Alejandro Giraldo Phone: +571-234-5190  Email: 
Media Relations (Colombia)  Mauricio Tellez Phone: + 571-2345377  Fax: 
+571-2344480  Email: mtellez@ecopetrol.com.co 
Website: www.ecopetrol.com.co 
SOURCE: Ecopetrol S.A. 
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CO: Ecopetrol S.A.
-0- Nov/07/2012 13:21 GMT
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