Standard & Poor's Maintains Ecopetrol's International Rating

- The foreign currency credit rating remains the same at BBB-
- The rate outlook remains "positive" 
- The stand-alone credit rating stays unchanged at bbb-
BOGOTA, Colombia, Dec. 12, 2012 /CNW/ - Ecopetrol S.A. (BVC: ECOPETROL; NYSE: 
EC; TSX: ECP) announces that the credit rating agency Standard & Poor's has 
maintained the company's international foreign currency rating at BBB- with a 
"positive" outlook. This rating encompasses the issuances of debt by Ecopetrol 
S.A. in international markets. With these ratings, the company retains its 
investment grade status. 
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The full report is available on the website 
Ecopetrol is Colombia's largest integrated oil company and is among the top 40 
oil companies in the world and the top four in Latin America. Besides 
Colombia, where it accounts for 60% of total production, the company is 
engaged in exploration and production activities in Brazil, Peru and the 
United States (Gulf of Mexico).  Ecopetrol has the principal refinery in 
Colombia and most of its network of oil and multipurpose pipelines, and it is 
considerably increasing its participation in biofuels. 
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 finance the company's 
business plan. Such forward-looking statements depend on changes in market 
conditions, government regulations, competitive pressures, the performance of 
the Colombian economy and the industry, among others; therefore, they are 
subject to change without prior notice. 
For more information, please contact: 
Director of Investor Relations   Alejandro Giraldo Telephone: +571-234-5190  
Fax: +571-234-5628  E-mail: 
Media Relations (Colombia)  Jorge Mauricio Tellez Telephone:  +571-234-4329  
Fax: +571-234-4480  E-mail: 
SOURCE: Ecopetrol S.A. 
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CO: Ecopetrol S.A.
NI: OIL UTI 2523  
-0- Dec/12/2012 23:29 GMT
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