This book presents the context of the Brazilian Pre-Salt emphasizing the particularities of the exploration activities undertaken. It is shown the advances in exploration for general deep areas and areas of salt layers as well as complexities related to activities in the Pre-Salt region, in Brazil, frequently located in regions of ultra-deepwater. As case studies it has used the prospect of Parati, Tupi and Carioca for the carbonates drilling optimization approach. By analyzing the provided and reported well-logs, including sonic wave transit time logs, gamma-ray logs and formation bulk...