X-Ray CT Experimental and Global History Matching Analysis of CO2 Flooding Behavior in Heterogeneous Rocks with Layered Heterogeneity

Zheng, Zhanpeng; Wang, Dayong; Xue, Ziqiu

doi:10.1007/s11242-023-01928-2

Cited by 2 publications

(1 citation statement)

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“…The expansion/compression of the CO 2 phase makes it particularly susceptible to alterations in pressure or temperature, significantly impacting CO 2 migration in the reservoir [22,23]. During the geological storage of CO2 in saline aquifers, fluctuations in fluid pressure or temperature are anticipated over time [24]. The solubility of the CO 2 component in the water phase and the density of the supercritical CO 2 phase change with reservoir temperature and pressure, leading to significant changes in the two-phase flow migration behavior [25,26].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation study of CO₂ storage capacity in Deep Saline aquifers

Wang,

Zhang,

et al. 2024

Sci. Tech. Energ. Transition

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The storage of supercritical CO2 in deep saline aquifers is essential for reducing carbon emissions, and selecting an appropriate reservoir is a primary task for carbon sequestration. To investigate the impact of reservoir physical properties on the CO2 storage capacity of saline aquifers, this study establishes a numerical simulation model of CO2 storage in deep saline aquifers anuses the MRST toolbox to solve it by the finite volume method. This research analyzes in detail the influence of reservoir physical properties on the CO2 migration process and CO2 storage capacity of the saline aquifers layer. The results show that CO2 injection for a long time is a process of first suppressing the pressure and then slowly diffusing it to the surroundings. Furthermore, the physical properties of the reservoir and the reservoir pressure significantly influence CO2 burial in deep saline aquifers. Higher reservoir permeability and deeper burial depth lead to more excellent CO2 storage and faster CO2 plume migration. However, the porosity and temperature of the reservoir have little impact on CO2 storage. Our research work provides a precise understanding of the selection of suitable layers for CO2 storage in deep saline aquifers, which offers strong support for early predictions of carbon capture, utilization, and storage (CCUS).

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