Using Reservoir Geology and Petrographic Observations to Improve CO2 Mineralization Estimates: Examples from the Johansen Formation, North Sea, Norway
作者： Anja Sundal , Helge Hellevang
DOI: 10.3390/MIN9110671
关键词: Plagioclase 、 Petrography 、 Facies 、 Siliciclastic 、 Reservoir modeling 、 Diagenesis 、 Lithic fragment 、 Geochemistry 、 Chlorite 、 Geology
摘要: Reservoir characterization specific to CO2 storage is challenging due the dynamic interplay of physical and chemical trapping mechanisms. The mineralization potential for in a given siliciclastic sandstone aquifer controlled by mineralogy, total reactive surface areas, prevailing reservoir conditions. Grain size, morphologies mineral assemblages vary according sedimentary facies diagenetic imprint. proposed workflow highlights how input values areas used geochemical modelling may be parameterized as part geological characterization. key issue separate minerals both with respect phase chemistry morphology (i.e., grain shape, occurrence), focus on main reactants sensitivity studies potentials. Johansen Formation unit new full-value chain capture (CCS) prospect Norway, which was licenced 2019. simulations show reaction potentials different occurrences. Mineralization are higher fine-grained facies, where plagioclase chlorite cation donors carbonatization. Reactivity decreases relative fractions ooidal clay lithic fragments.
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