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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Autores principales:	Guannan Liu, Xiaopeng Pei, Dayu Ye, Feng Gao, Zongqing Zhou, Chenglu Gao
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi-Wiley 2021
Materias:	Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/35b2f337cf8d4d2eb5f76f718965eedd
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spelling	oai:doaj.org-article:35b2f337cf8d4d2eb5f76f718965eedd2021-11-08T02:35:17ZStudy on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone1468-812310.1155/2021/5533345https://doaj.org/article/35b2f337cf8d4d2eb5f76f718965eedd2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/5533345https://doaj.org/toc/1468-8123As 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.Guannan LiuXiaopeng PeiDayu YeFeng GaoZongqing ZhouChenglu GaoHindawi-WileyarticleGeologyQE1-996.5ENGeofluids, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geology QE1-996.5
spellingShingle	Geology QE1-996.5 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
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
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
title	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_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_sort	study on connectivity mechanism and robustness of three-dimensional pore network of sandstone
publisher	Hindawi-Wiley
publishDate	2021
url	https://doaj.org/article/35b2f337cf8d4d2eb5f76f718965eedd
work_keys_str_mv	AT guannanliu studyonconnectivitymechanismandrobustnessofthreedimensionalporenetworkofsandstone AT xiaopengpei studyonconnectivitymechanismandrobustnessofthreedimensionalporenetworkofsandstone AT dayuye studyonconnectivitymechanismandrobustnessofthreedimensionalporenetworkofsandstone AT fenggao studyonconnectivitymechanismandrobustnessofthreedimensionalporenetworkofsandstone AT zongqingzhou studyonconnectivitymechanismandrobustnessofthreedimensionalporenetworkofsandstone AT chenglugao studyonconnectivitymechanismandrobustnessofthreedimensionalporenetworkofsandstone
_version_	1718443270360530944

Study on Connectivity Mechanism and Robustness of Three-Dimensional Pore Network of Sandstone

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