LARGE SCALE CARBON CAPTURE AND STORAGE IN BRAZIL: A PRELIMINARY COST MODELLING FOR CAMPOS BASIN’S OIL FIELDS

Resumo

This study provides a preliminary cost assessment for large scale deployment of carbon capture and storage (CCS) in Brazil. A study case for CO2 geological storage in the Campos Basin, one of the sedimentary basins with very large oil reserves in Brazil, was performed. The results showed that about 76% of this basin's CO2 storage capacity (considering the 17 studied oil fields) can be used at storage costs lower than 4 €/t CO2. The findings of the research indicate that about 10 MtCO2 can be captured from neighbouring sources at costs lower than 28 €/tonne CO2. An assessment of CCS chains under four different scenarios showed average costs for complete CCS chains in the range of 47 €/t by 2025 in a scenario with 10 MtCO2 stored/yr to 82 €/t in a scenario with 35 MtCO2 stored/yr. In the latter scenario, the estimated storage capacity of Campos basin’s oil fields is filled in about 27 years. In all scenarios, CO2 capture contributed the most to the total costs. The source-sink matching performed in this study is very important to support CCS planning in Brazil.