Effect of temperature on convective-reactive transport of CO2 in geological formations

Sara Tabrizinejadas, Marwan Fahs, Hussein Hoteit, Anis Younes, Behzad Ataie-Ashtiani, Craig T. Simmons, Jerome Carrayrou

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Geological CO2 sequestration (GCS) remains the main promising solution to mitigate global warming. Understating the fate of CO2 behavior is crucial for securing its containment in the reservoir and predicting the impact of dissolved CO2 on the host formation. Most modeling-based studies in the literature investigated the convective-reactive transport of CO2 by assuming isothermal conditions. The effect of temperature on the convective-reactive transport of CO2 is still poorly understood, particularly at the field scale. The objective of this study is to provide an in-depth understanding of CO2-related reactive thermohaline convection (RTHC) processes at field scale. Thus, a new numerical model based on advanced finite element formulations is developed. The new model incorporates an accurate time integration scheme with error control. Numerical experiments confirm high accuracy and efficiency of the newly developed model. The effect of temperature on CO2 transport is investigated for a field case in the Viking reservoir in the North Sea. Results show that including the temperature effect intensifies the fingering processes and, consequently, CO2 dissolution. Neglecting the thermal convection processes and the impact of temperature on the dissolution rate can significantly impact the model predictions. A sensitivity analysis is developed to understand the effect of parameters governing the dissolution rate on the fingering phenomenon and the total CO2 flux.
Original languageEnglish (US)
Pages (from-to)103944
JournalInternational Journal of Greenhouse Gas Control
Volume128
DOIs
StatePublished - Jul 31 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-09-06

ASJC Scopus subject areas

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

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