Recent Advances in Geochemical and Mineralogical Studies on CO2–Brine–Rock Interaction for CO2 Sequestration: Laboratory and Simulation Studies
| dc.contributor.author | Khan, Muhammad Noman | |
| dc.contributor.author | Siddiqui, Shameem | |
| dc.contributor.author | Thakur, Ganesh C. | |
| dc.date.accessioned | 2024-07-12T12:42:29Z | |
| dc.date.available | 2024-07-12T12:42:29Z | |
| dc.date.issued | 2024-07-08 | |
| dc.date.updated | 2024-07-12T12:42:30Z | |
| dc.description.abstract | The urgent need to find mitigating pathways for limiting world CO<sub>2</sub> emissions to net zero by 2050 has led to intense research on CO<sub>2</sub> sequestration in deep saline reservoirs. This paper reviews key advancements in lab- and simulation-scale research on petrophysical, geochemical, and mineralogical changes during CO<sub>2</sub>–brine–rock interactions performed in the last 25 years. It delves into CO<sub>2</sub> MPD (mineralization, precipitation, and dissolution) and explores alterations in petrophysical properties during core flooding and in static batch reactors. These properties include changes in wettability, CO<sub>2</sub> and brine interfacial tension, diffusion, dispersion, CO<sub>2</sub> storage capacity, and CO<sub>2</sub> leakage in caprock and sedimentary rocks under reservoir conditions. The injection of supercritical CO<sub>2</sub> into deep saline aquifers can lead to unforeseen geochemical and mineralogical changes, possibly jeopardizing the CCS (carbon capture and storage) process. There is a general lack of understanding of the reservoir’s interaction with the CO<sub>2</sub> phase at the pore/grain scale. This research addresses the gap in predicting the long-term changes of the CO<sub>2</sub>–brine–rock interaction using various geochemical reactive transport simulators. Péclet and Damköhler numbers can contribute to a better understanding of geochemical interactions and reactive transport processes. Additionally, the dielectric constant requires further investigation, particularly for pre- and post-CO<sub>2</sub>–brine–rock interactions. For comprehensive modeling of CO<sub>2</sub> storage over various timescales, the geochemical modeling software called the Geochemist’s Workbench was found to outperform others. Wettability alteration is another crucial aspect affecting CO<sub>2</sub>–brine–rock interactions under varying temperature, pressure, and salinity conditions, which is essential for ensuring long-term CO<sub>2</sub> storage security and monitoring. Moreover, dual-energy CT scanning can provide deeper insights into geochemical interactions and their complexities. | |
| dc.identifier | doi: 10.3390/en17133346 | |
| dc.identifier.citation | Energies 17 (13): 3346 (2024) | |
| dc.identifier.uri | https://hdl.handle.net/10657/17613 | |
| dc.title | Recent Advances in Geochemical and Mineralogical Studies on CO2–Brine–Rock Interaction for CO2 Sequestration: Laboratory and Simulation Studies |