Brazil is unlikely to join the Organization of Petroleum Exporting Countries anytime soon, despite overtures from the cartel, AP quoted the head of the nation's state-run oil company as saying today. Petrobras CEO Jose Sergio Gabrielli told The Associated Press that his company isn't yet a big enough oil exporter to warrant joining the organization. «To join OPEC, I think a country should have a very big export-oriented policy. The Brazilian case isn't like that,» Gabrielli told the AP on the sidelines of the World Economic Forum on Latin America. He underscored, however, that any decision to join the Organization of Petroleum Exporting Countries is the responsibility of Brazil's government and not Petrobras. In the past two years, Petroleo Brasileiro SA has made vast offshore oil discoveries in Brazilian waters. Experts have said the finds could hold up to 80 billion barrels of oil or more _ enough to turn South America's largest nation into a major oil exporter. Brazil in recent months has received at least two direct invitations to join OPEC, including one from Iran in September, which the government turned down.