Microscopic and macroscopic assessment of carbonate dissolution for geologic $${{\hbox {CO}}_{2}}$$ storage
نویسندگان
چکیده
Abstract Carbon capture and storage in underground formations might be considered as a relevant technology to curb anthropogenic climate gas emissions. However, carbon dioxide ( $${{\hbox {CO}}_{2}}$$ CO 2 ) injection can lead severe rock-fluid interactions depending on the thermodynamic conditions, rock fluids composition. The progressive dissolution of formation brine results mineral dissolution/precipitation processes that may drastically change properties reservoir. This study is an attempt get deeper understanding heterogeneous limestone at microscopic macroscopic levels by synergy between Isothermal Titration Calorimetry (ITC) core flooding experiments with in-situ imaging quantify uneven displacement fronts understand influence reactions larger scale. Rock-fluid fluid-fluid interactions, evaluated ITC experiments, indicate carbonate unfavorable respect enthalpy but thermodynamically favorable entropy (cations hydrogen increase brine). Core PET/CT show complex pore structures cause variation availability ratio reactive fluid throughout porous medium, hence, non-uniform was confirmed microcalorimetry provides insights into rocks both scales.
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ژورنال
عنوان ژورنال: Discover Energy
سال: 2023
ISSN: ['2730-7719']
DOI: https://doi.org/10.1007/s43937-023-00017-1