Analysis of CO2 and brine relative permeability of in-situ core samples with employing double separator

Effect of the Flow Rate on the Relative Permeability Curve in the CO2 and Brine System for CO2 Sequestration

“…Figure 2 shows the experimental apparatus based on previous work [31] that was used for measuring the endpoint relative permeability of CO 2 and residual brine saturation through the steady-state technique. The CO 2 and brine were circulated through the core by a pump system.…”

Computed X‐ray Tomography Investigation of Porosity and Permeability of the Liujiagou Formation Sandstone Exposed to CO2‐Saturated Brine

“…However, with the acidic nature of CO 2 dissolved in formation water, it is possible that chemical reactions with the formation can lead to leakage pathways and compromise storage integrity (Voltolini et al, 2017;Bai et al, 2018;Bai et al, 2023). Therefore, it is important to explore the permeability changes of a formation rock caused by exposure to CO 2 .Rock permeability is directly related to a series of factors including porosity, pore size and pore connectivity (Jeong et al, 2020). Particularly with carbonate rocks, the compositional minerals can react with formation brine and CO 2 , leading to a combination of dissolution and precipitation processes, which can affect the pore structure and thus influence the permeability (Liu et al, 2003;Kweon et al, 2014;Wu et al, 2022).…”

“…Rock permeability is directly related to a series of factors including porosity, pore size and pore connectivity (Jeong et al, 2020). Particularly with carbonate rocks, the compositional minerals can react with formation brine and CO 2 , leading to a combination of dissolution and precipitation processes, which can affect the pore structure and thus influence the permeability (Liu et al, 2003;Kweon et al, 2014;Wu et al, 2022).…”