Investor Presentaiton

Growing and diversified exploration portfolio Exploration Area Million hectares +134% 21.3 5.2 16.1 9 2002 Source: Ecopetrol 2011 Colombia International Colombia 70 exploration Assets 16.1 million* hectares International 137 exploration Assets 5.2 million hectares *Includes: Ecopetrol S.A., Hocol, and Equion 60 Years 24 24

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