Multi-scale, micro-computed tomography-based pore network models to simulate drainage in heterogeneous rocks

2015 ◽  
Vol 78 ◽  
pp. 36-49 ◽  
Author(s):  
Tom Bultreys ◽  
Luc Van Hoorebeke ◽  
Veerle Cnudde
Keyword(s):  
Computed Tomography ◽  
Network Models ◽  
Pore Network ◽  
Micro Computed Tomography ◽  
Multi Scale ◽  
Heterogeneous Rocks

Characterization of foamed concrete with different additives using multi-scale micro-computed tomography

2022 ◽  
Vol 319 ◽  
pp. 125953
Author(s):  
Sang-Yeop Chung ◽  
Ji-Su Kim ◽  
Tong-Seok Han ◽  
Dietmar Stephan ◽  
Paul H. Kamm ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Micro Computed Tomography ◽  
Multi Scale ◽  
Foamed Concrete

scholarly journals X-ray micro-computed tomography characterized soil pore network as influenced by long-term application of manure and fertilizer

Geoderma ◽  
2021 ◽  
Vol 385 ◽  
pp. 114872
Author(s):  
Navdeep Singh ◽  
Sandeep Kumar ◽  
Ranjith P. Udawatta ◽  
Stephen H. Anderson ◽  
Lis W. de Jonge ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pore Network ◽  
Micro Computed Tomography ◽  
X Ray

Pore Network Simulation of Two Phase Flow Based on X-Ray Micro Computed Tomography Images

2014 ◽  
Vol 960-961 ◽  
pp. 254-257 ◽  
Author(s):  
Meiheriayi Mutailipu ◽  
Yu Liu ◽  
Ling Yu Chen ◽  
Yong Chen Song
Keyword(s):  
Computed Tomography ◽  
Binary Data ◽  
Two Phase Flow ◽  
Network Simulation ◽  
Pore Network ◽  
Phase Flow ◽  
Micro Computed Tomography ◽  
Two Phase ◽  
X Ray ◽  
Pore Networks

In this paper, firstly, the X-ray micro computed tomography (micro-CT) is used for the analysis of internal structure of sand-packed beds. Binary data which are able to describe the pore structures of these beds were obtained from a series of imaging processing of rescaling, media filtering, and thresholding. Then a Maximal Ball (MB) algorithm is applied to these binary data to extract the equivalent pore networks. The parameters of the pore networks, such as radius, coordination number and shape factors of pore and throat are computed. The results demonstrate that the MB method can extract reasonable and faithful pore network of the different sand packed samples. Finally, the relative permeability and capillary pressure of drainage and imbibition cycle of water and oil are predicated. The numerical simulation results demonstrated good accordance with that of the experiments. Pore network simulation shows good results for two phase flow in porous media.

Genetic algorithm-based pore network extraction from micro-computed tomography images

2013 ◽  
Vol 92 ◽  
pp. 157-166 ◽  
Author(s):  
Ali Nejad Ebrahimi ◽  
Saeid Jamshidi ◽  
Stefan Iglauer ◽  
Ramin B. Boozarjomehry
Keyword(s):  
Computed Tomography ◽  
Genetic Algorithm ◽  
Pore Network ◽  
Micro Computed Tomography ◽  
Computed Tomography Images

Permeability of laboratory-formed porous media containing methane hydrate: Observations using X-ray computed tomography and simulations with pore network models

Fuel ◽  
2015 ◽  
Vol 145 ◽  
pp. 170-179 ◽  
Author(s):  
Jia-Qi Wang ◽  
Jia-Fei Zhao ◽  
Ming-Jun Yang ◽  
Yang-Hui Li ◽  
Wei-Guo Liu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Porous Media ◽  
Methane Hydrate ◽  
Network Models ◽  
Pore Network ◽  
X Ray ◽  
X Ray Computed

scholarly journals Geometrical and Topological Analysis of Pore Space in Sandstones Based on X-ray Computed Tomography

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3774 ◽  
Author(s):  
Linxian Gong ◽  
Lei Nie ◽  
Yan Xu
Keyword(s):  
Computed Tomography ◽  
Fluid Flow ◽  
Pore Space ◽  
Topological Analysis ◽  
Network Models ◽  
High Porosity ◽  
Micro Computed Tomography ◽  
X Ray ◽  
And Topology ◽  
Low Porosity

The pore geometry and topology properties of pore space in rocks are significant for a better understanding of the complex hydrologic and elastic properties. However, geometry and topology information about the sandstone pore structures is not fully available. In this study, we obtained the topological and geometrical pore parameters from a representative elementary volume (REV) for fluid flow in sandstone samples. For comparison, eight types of sandstones with various porosities were studied based on the X-ray micro-computed tomography technique. In this study, the REV size was selected based on the parameters from the respective pore network models (PNM), not just the porosity. Our analysis indicates that despite different porosity, all the sandstone samples have highly triangular-shaped pores and a high degree of pore structural isotropy. The high porosity group sandstones exhibit wider ranges of pore sizes than the low porosity group sandstones. Compared to the high porosity group sandstones, the low porosity group sandstones samples showing a higher global aspect ratio, indicating some pores exist in the form of bottlenecks. The pore topological properties of different sandstones show a high dependence of the porosity. The high porosity group sandstones obtain large coordination numbers, large connectivity densities and low tortuosities. The results from this study will help better understand the complex pore structure and the fluid flow in sandstone.

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