The Tupi oil field (reverted from Lula oil field) is a large oil field located in the Santos Basin, 250 kilometres (160 mi) off the coast of Rio de Janeiro, Brazil. The field was originally nicknamed in honor of the Tupi people and later named after the mollusc, however it was also ambiguously similar to the name of former Brazilian president Luiz Inacio Lula da Silva. It is considered to be the Western Hemisphere's largest oil discovery of the last 30 years. 

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