Oil production growth and challenges in Vaca Muerta, rising production in Brazil, and the pre-salt oil auction by PPSA were some of the hottest topics at the Argus Rio Crude Conference in May. João Scheller, responsible for covering oil markets in Argentina, Colombia, Ecuador, and Guyana, presents the highlights of the event in this conversation with Camila Fontana, deputy bureau chief of the Argus office in Brazil.