Multi-objective Optimization of CO2 Recycling Operations for CCUS in Pre-Salt Carbonate Reservoirs

Hydra W. L. Rodrigues*, Eric J. Mackay, Daniel P. Arnold

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


This study evaluates the potential of recycling carbon dioxide (CO2) in the associated gas for Carbon Capture Utilization and Storage (CCUS) in pre-salt carbonate reservoirs. We performed compositional subsurface modelling of a hypothetical field for multi-objective optimization, aiming at minimizing carbon emissions whilst maximizing the project's economics. Although no absolute reduction in total CO2 emissions was met with economic improvement, all simulated CCUS scenarios yielded a lower carbon footprint oil, with 41% reduction in operational emissions and up to 20% increase in Net Present Value. The best CCUS case presented break-even oil price of 39.2 USD/STB and CO2 abatement cost of negative 92.4 USD/tCO2 abated, also showing significant reduction in number of squeeze treatments and cost of calcite scale management.

Original languageEnglish
Publication statusPublished - 2021
Event15th Greenhouse Gas Control Technologies Conference 2021 - Virtual, Online, United Arab Emirates
Duration: 15 Mar 202118 Mar 2021


Conference15th Greenhouse Gas Control Technologies Conference 2021
Abbreviated titleGHGT 2021
Country/TerritoryUnited Arab Emirates
CityVirtual, Online


  • CCUS
  • CO Storage
  • CO-EOR
  • Optimization

ASJC Scopus subject areas

  • General Energy
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law
  • Pollution


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