Resumo:

The search for reservoirs is a relevant part of CCS projects, and in the Brazilian context, it is crucial to think about strategic locations associated with stationary CO2 sources. Thus, the Santos Basin is a region of interest since it contains essential oil and gas reserves like those in the subsalt area. Depleted oil and gas fi elds appear to be more favourable reservoir options due to local technical studies, infrastructure availability, connections with emission centres by pipelines or ship routes, and fewer environmental risks. This chapter explores the potential and best suitable sites, focusing on the case of the Merluza Field. The presence of infrastructure is another favourable point for choosing the Merluza Field as a location for the geological storage of CO2. Economically, adaptation to the existing activity tends to be much cheaper than construction with no initial infrastructure available. In the case of Merluza Field, the reservoir structure is open for use. The existing pipeline is also an advantage if the fi eld is selected as the continental CO2 storage site. The two reservoir possibilities (rocks from the Juréia Formation and Itajaí-Açu, Ilhabela Member) have characteristics favourable to be CO2 geological reservoirs. The high porosities, mainly for the Ilhabela Member, indicate that large amounts of gas can be injected.