Multi-objective optimization of CO2 recycling operations for CCUS in pre-salt carbonate reservoirs

Hydra W. l. Rodrigues, Eric J. Mackay, Daniel P. Arnold

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
5 Downloads (Pure)


This study evaluates the potential of recycling carbon dioxide (CO2) in the associated gas in ultra-deepwater pre-salt carbonate reservoirs for Carbon Capture Utilization and Storage (CCUS). We performed compositional subsurface modeling of a hypothetical field for multi-objective optimization, aiming at minimizing carbon emissions whilst maximizing the project's Net Present Value (NPV). Although no absolute reduction in total CO2 emissions was met with economic improvement, all simulated CCUS scenarios yielded a lower carbon footprint oil, with 43.5% reduction in operational emissions and up to 25.5% increase in NPV. The best CCUS case, a tapered Water Alternating Gas (WAG) design, presented break-even oil price of 39.5 USD/STB and operational CO2 abatement cost of negative 94.8 USD/tCO2 abated, also showing significant reduction in number of squeeze treatments and cost of calcite scale management.
Original languageEnglish
Article number103719
JournalInternational Journal of Greenhouse Gas Control
Early online date30 Jun 2022
Publication statusPublished - Sept 2022


  • CCUS
  • CO -EOR
  • Calcite
  • Optimization
  • Pre-salt
  • WAG

ASJC Scopus subject areas

  • Pollution
  • Energy(all)
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law


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