Preliminary basin scale assessment of CO2 geological storage potential in Santos Basin, Southeastern Brazil: Merluza Field study case / Avaliação preliminar do potencial para armazenamento geológico de CO2 da Bacia de Santos, sudeste do Brasil: estudo de caso do Campo de Merluza

Mariana Ramos Ciotta, Colombo Celso Gaeta Tassinari


The global community has authorized, through the Paris Agreement, the choice of an ambitious goal of reducing greenhouse gas emissions during the 21st century. The high world dependence on fossil fuels indicates that a quick energy transition—based on the use of renewable fuels or even considering the reduction of total energy consumption—will not be possible without structural changes in the neoliberal way of production and consumption. Thus, carbon capture and storage technologies emerge as a relevant tool for emergency action to meet the Paris Agreement goals. The search for adequate reservoirs is a relevant part of the CO2 storage endeavor and the Santos Basin has a privileged location, being close to oil producing and consuming centers. This work culminated in the study of the Merluza Field zone. Geochemical data and compiled lithological descriptions suggest a possible use of Jureia Formation and Itajaí-Açu Formation. A storage capacity estimation study is also presented. This favorability is not only geological: the presence of infrastructure installed in the Merluza zone as a fixed platform and an exclusive gas pipeline suggests greater economy and less environmental damage from the adaptation of depleted fields for use as a geological reservoir of CO2.


CCS, Storage Capacity, Santos Basin, Depleted Oil and Gas Field

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