The study aims to understand how the Contractual Joint Ventures (CJVs) formed by the company Petrobras in Oil And Gas Exploration and Production affected its performance and learning. This qualitative and descriptive research is based on the theoretical lens of coopetition and performance and learning in Joint Ventures to, from multiple case studies with four CJVs, seek relationships between those CJVs and the learning and performance of the organization studied. The study had the data collection in three stages: first an exploratory interview, then interviews with employees of the corporate area and finally the interviews with employees who work or worked in the CJVs of BM-S-11 (Tupi field), Joint Venture X, Libra (Mero field) and BM-C-33. The study concluded that the influence of the performance of the CJVs on Petrobras performance, although linked to geological factors such as the presence of large hydrocarbon reserves with low extraction costs, is directly influenced by the way in which the JV is managed, by the capacity of the partners to contribute to the project, in addition to a partnership formed with similar strategic objectives and with trust between partners. Learning, on the other hand, is even more associated with partner characteristics, such as technological capacity and a similar knowledge base, and is governed by incentive of the leadership of partner companies to exchange knowledge, in addition to the governance that regulates the exchanges - whether governed by of the Joint Operating Agreement or by other private agreements between the parties.