Mass transfer model of fracture-controlled matrix unit: Model derivation and experimental verification based on fractal theory and micro-CT scanning technology

Liu, Qiang; Song, Rui; Li, Jianjun; Pei, Guihong; Lei, Yun

doi:10.1016/j.egyr.2020.11.016

Cited by 16 publications

(4 citation statements)

References 74 publications

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“…Near-wellbore measurement methods often use radiotracers to monitor wellbore data (Guo et al, 2019;Liu et al, 2018;Jin et al, 2021;Liu et al, 2020a). Different radioactive materials were put into the fracturing fluids, gamma spectrum was measured by using a logging instrument, the distribution of the proppant was obtained, and then the fracture height and width were calculated (Gulrajani and Romero, 1996;Shi et al, 2017;Liu et al, 2020b), as shown in Figure 1C. Near-wellbore measurement technology is limited by a small monitoring range, resulting in low accuracy of evaluation results.…”

Section: Near-wellbore Measurement Methodsmentioning

confidence: 99%

Research Advance on the Diagnosis Technology of Hydraulic Fractures in Shale Reservoirs

Chen

Wang

et al. 2022

Front. Energy Res.

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Section: Near-wellbore Measurement Methodsmentioning

confidence: 99%

Research Advance on the Diagnosis Technology of Hydraulic Fractures in Shale Reservoirs

Chen

Wang

et al. 2022

Front. Energy Res.

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“…Abbasi et al 34 studied the effect of dynamic capillary pressure on the two-phase flow process, and the results show that considering the dynamic capillary effect is very important in the simulation of imbibition in porous media. Based on fractal theory, Liu et al 35 deduced the effective mass transfer model of a matrix considering roughness, heterogeneity of pore structure, irreducible water, and pore water pressure and verified the calculation results of the model through threedimensional reconstructed CT images. Other studies have focused on changing materials and their parameters and wetting fluid properties to explore the relationship between imbibition characteristics, materials, and fluids.…”

Section: Introductionmentioning

confidence: 98%

Study on the Evolution Law and Mechanism of Fracture Imbibition in Loaded Coal Based on Micro-CT

Yu,

Li,

Gao

et al. 2023

Energy Fuels

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“…Berg and Dalton et al [33,34] obtained an accurate complex pore structures of sandstone and investigated the effects of permeability and wettability on CO2 flow behavior. Liu et al [35,36] first used a new reconstruction method to establish the fracture-controlled matrix unit then used the CT scanning technique to obtain the relevant parameters of the proposed fracture control matrix unit mass transfer model. The correctness of the model was verified by comparison with the experimental results of microscopic spontaneous imbibition.…”

Section: Introductionmentioning

confidence: 99%

Microscopic Flow of CO<sub>2</sub> in Complex Pore Structures: A Recent 10-Year Review

Liu¹,

Li²,

Liang³

et al. 2023

Preprint

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To prevent CO2 leakage and ensure the safety of long-term CO2 storage, it is essential to investigate the flow mechanism of CO2 in complex pore structures at the pore scale. This study focuses on reviewing the experimental, theoretical, and numerical simulation studies on the microscopic flow of CO2 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), are used to reconstruct the complex pore structures of rocks. Mathematical methods, such as Darcy's law, Young–Laplace’s law, and the Navier-Stokes equation, are used to describe the microscopic flow of CO2. Numerical methods, such as the lattice Boltzmann method (LBM) and pore network (PN) model, are used for numerical simulation. 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: (1) Conducting real-time CT scanning experiments of CO2 displacement combined with the developed real-time CT scanning clamping device to realize real-time visualization and provide quantitative description of the flow behavior of CO2 in complex pore structures; (2) The effect of pore structures change on the CO2 flow mechanism caused by the chemical reaction between CO2 and the pore surface, the flow theory of CO2 considering wettability and damage theory in a complex pore structures; (3) The flow mechanism of multi-phase CO2 in complex pore structures; (4) The flow mechanism of CO2 in the pore structures at multiscale and the scale upgrade from microscopic to mesoscopic to macroscopic. Generally, this study focuses on reviewing the research progress of CO2 flow mechanisms in complex pore structures at the pore scale and affords an overview of potential advanced developments to enhance the current understanding of CO2 microscopic flow mechanisms.

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Mass transfer model of fracture-controlled matrix unit: Model derivation and experimental verification based on fractal theory and micro-CT scanning technology

Cited by 16 publications

References 74 publications

Research Advance on the Diagnosis Technology of Hydraulic Fractures in Shale Reservoirs

Research Advance on the Diagnosis Technology of Hydraulic Fractures in Shale Reservoirs

Study on the Evolution Law and Mechanism of Fracture Imbibition in Loaded Coal Based on Micro-CT

Microscopic Flow of CO<sub>2</sub> in Complex Pore Structures: A Recent 10-Year Review

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