Permeability prediction for porous sandstone using digital twin modeling technology and Lattice Boltzmann method

The permeability of porous rock is a crucial indicator evaluating its ability to allow liquids to pass through it. However, challenges are always encountered in measurement and prediction of permeability, including the complicated process of laboratory experiments and the refined 3D numerical recons...

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Bibliographic Details
Published in:International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 2021-06, Vol.142, p.104695, Article 104695
Main Authors: Xiao, Huaiguang, He, Lei, Li, Jianchun, Zou, Chunjiang, Shao, Chengmeng
Format: Article
Language:English
Subjects:
Coordination numbers
Digital imaging
Digital twin
Digital twins
Fractal geometry
Homology
Image reconstruction
Lattice Boltzmann
Mathematical models
Membrane permeability
Morphology
Parameters
Permeability
Permeability prediction
Pore throat model
Porosity
Porous media
Porous rock
Predictions
Sandstone
Solid phases
Technology
Tortuosity
Two dimensional models
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Summary:The permeability of porous rock is a crucial indicator evaluating its ability to allow liquids to pass through it. However, challenges are always encountered in measurement and prediction of permeability, including the complicated process of laboratory experiments and the refined 3D numerical reconstruction. In order to improve the efficiency and accuracy of permeability prediction, the digital twin modeling technology is proposed to generate homologous and heterogeneous digital sandstone models based on a single two-dimensional image in this paper. Comparison of the CT reconstruction with the digital twin of sandstone indicates that they are very similar in complementary solid-phase morphology of porous media, global parameters (total porosity, fractal dimension, tortuosity), and local parameters (porosity of sequence layer, pore and throat characteristics, coordination number). In addition, the permeability of CT reconstruction and ten digital twins are analyzed by using the Lattice Boltzmann Method. The results show that the permeability of digital twins is very stable and close to the CT reconstruction at three orthogonal directions. The findings in this study may provide an accurate, stable, rapid and economic method for predicting the permeability of porous media. [Display omitted]
ISSN:1365-1609
1873-4545
DOI:10.1016/j.ijrmms.2021.104695