BRIEF-Colombia's Ecopetrol looking to expand oil presence in Brazil
Oct 7 (Reuters) -
* Colombia's Ecopetrol looking to increase oil and gas exploration presence in Brazil, country chief says on sidelines of oil auction in Rio de Janeiro
* Head of Colombia's Ecopetrol in Brazil says not a great moment in oil market, but Brazil oil auction has some interesting areas Further company coverage: (Reporting By Stephen Eisenhammer and Jeb Blount)
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