Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone
As one of the most prevalent porous media, rock contains a large number of pore throats of varying size and shape. It is essential to analyze the complex pore network structure and to define the network structural features to reveal the microscopic mechanism of the rock permeability. In this paper,...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/5533345 |
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| _version_ | 1832556423863599104 |
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| author | Guannan Liu Xiaopeng Pei Dayu Ye Feng Gao Zongqing Zhou Chenglu Gao |
| author_facet | Guannan Liu Xiaopeng Pei Dayu Ye Feng Gao Zongqing Zhou Chenglu Gao |
| author_sort | Guannan Liu |
| collection | DOAJ |
| description | As one of the most prevalent porous media, rock contains a large number of pore throats of varying size and shape. It is essential to analyze the complex pore network structure and to define the network structural features to reveal the microscopic mechanism of the rock permeability. In this paper, based on the complex network theory and CT scanning technology, sandstone is used as an example to study the structural characteristics of the rock network with different porosities. The results show that the structural characteristics of the sandstone seepage network are consistent with BA scale-free network, whose average path length increases with the size of the network. At the same time, the porosity of the sandstone is strongly influenced by the number of throat in the rock pore network. Furthermore, our analysis concludes that a few pores with a large number of connections contribute significantly to the overall connectivity of the sandstone seepage network. Removing the ‘hub’ pores increased the average path length of the entire network by 27.63-37.26%, which could not be achieved by randomly removing method. While the sandstone seepage network has better fault tolerance and robustness to external random attacks, this study provides a new approach to study the mechanisms of fluid storage and migration in porous media. |
| format | Article |
| id | doaj-art-35b2f337cf8d4d2eb5f76f718965eedd |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-35b2f337cf8d4d2eb5f76f718965eedd2025-02-03T05:45:28ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/55333455533345Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of SandstoneGuannan Liu0Xiaopeng Pei1Dayu Ye2Feng Gao3Zongqing Zhou4Chenglu Gao5State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaMechanics and Civil Engineering Institute, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaGeotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, ChinaGeotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, ChinaAs one of the most prevalent porous media, rock contains a large number of pore throats of varying size and shape. It is essential to analyze the complex pore network structure and to define the network structural features to reveal the microscopic mechanism of the rock permeability. In this paper, based on the complex network theory and CT scanning technology, sandstone is used as an example to study the structural characteristics of the rock network with different porosities. The results show that the structural characteristics of the sandstone seepage network are consistent with BA scale-free network, whose average path length increases with the size of the network. At the same time, the porosity of the sandstone is strongly influenced by the number of throat in the rock pore network. Furthermore, our analysis concludes that a few pores with a large number of connections contribute significantly to the overall connectivity of the sandstone seepage network. Removing the ‘hub’ pores increased the average path length of the entire network by 27.63-37.26%, which could not be achieved by randomly removing method. While the sandstone seepage network has better fault tolerance and robustness to external random attacks, this study provides a new approach to study the mechanisms of fluid storage and migration in porous media.http://dx.doi.org/10.1155/2021/5533345 |
| spellingShingle | Guannan Liu Xiaopeng Pei Dayu Ye Feng Gao Zongqing Zhou Chenglu Gao Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone Geofluids |
| title | Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone |
| title_full | Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone |
| title_fullStr | Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone |
| title_full_unstemmed | Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone |
| title_short | Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone |
| title_sort | study on connectivity mechanism and robustness of three dimensional pore network of sandstone |
| url | http://dx.doi.org/10.1155/2021/5533345 |
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