Microscopic Flow of CO 2 in Complex Pore Structures: A Recent 10-Year Review
Qiang Liu,
Jialong Li (ljl991225@163.com),
Bing Liang,
Weiji Sun,
Jianjun Liu and
Yun Lei
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Qiang Liu: School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China
Jialong Li: School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China
Bing Liang: School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China
Weiji Sun: School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China
Jianjun Liu: State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
Yun Lei: Shenyang Research Institute, China Coal Technology & Engineering Group Corp, Shenyang 113122, China
Sustainability, 2023, vol. 15, issue 17, 1-21
Abstract:
To prevent CO 2 leakage and ensure the safety of long-term CO 2 storage, it is essential to investigate the flow mechanism of CO 2 in complex pore structures at the pore scale. This study focused on reviewing the experimental, theoretical, and numerical simulation studies on the microscopic flow of CO 2 in complex pore structures during the last decade. For example, advanced imaging techniques, such as X-ray computed tomography (CT) and nuclear magnetic resonance (NMR), have been used to reconstruct the complex pore structures of rocks. Mathematical methods, such as Darcy’s law, the Young–Laplace law, and the Navier-Stokes equation, have been used to describe the microscopic flow of CO 2 . Numerical methods, such as the lattice Boltzmann method (LBM) and pore network (PN) model, have been used for numerical simulations. The application of these experimental and theoretical models and numerical simulation studies is discussed, considering the effect of complex pore structures. Finally, future research is suggested to focus on the following. (1) Conducting real-time CT scanning experiments of CO 2 displacement combined with the developed real-time CT scanning clamping device to achieve real-time visualization and provide a quantitative description of the flow behavior of CO 2 in complex pore structures. (2) The effect of pore structures changes on the CO 2 flow mechanism caused by the chemical reaction between CO 2 and the pore surface, i.e., the flow theory of CO 2 considering wettability and damage theory in a complex pore structures. (3) The flow mechanism of multi-phase CO 2 in complex pore structures. (4) The flow mechanism of CO 2 in pore structures at multiscale and the scale upgrade from microscopic to mesoscopic to macroscopic. Generally, this study focused on reviewing the research progress of CO 2 flow mechanisms in complex pore structures at the pore scale and provides an overview of the potential advanced developments for enhancing the current understanding of CO 2 microscopic flow mechanisms.
Keywords: CO 2 storage; pore scale; CT scanning; complex pore structures; micro-flow (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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