A Permeability Estimation Method Based on Elliptical Pore Approximation

Digital rock images may capture more detailed pore structure than the traditional laboratory methods. No explicit function can correlate permeability accurately for flow within the pore space. This has motivated researchers to predict permeability through the application of numerical techniques, e.g...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Shuaishuai Wei, Kun Wang, Huan Zhang, Junming Zhang, Jincheng Wei, Wenyang Han, Lei Niu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	improved finite difference method permeability digital rock image pore space approximation grid coarsening Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/21e96090b393461394c2dbdcc1db7944
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:21e96090b393461394c2dbdcc1db7944
record_format	dspace
spelling	oai:doaj.org-article:21e96090b393461394c2dbdcc1db79442021-11-25T19:16:27ZA Permeability Estimation Method Based on Elliptical Pore Approximation10.3390/w132232902073-4441https://doaj.org/article/21e96090b393461394c2dbdcc1db79442021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/22/3290https://doaj.org/toc/2073-4441Digital rock images may capture more detailed pore structure than the traditional laboratory methods. No explicit function can correlate permeability accurately for flow within the pore space. This has motivated researchers to predict permeability through the application of numerical techniques, e.g., using the finite difference method (FDM). However, in order to get better permeability calculation results, the grid refinement was needed for the traditional FDM and the accuracy of the traditional method decreased in pores with elongated cross sections. The goal of this study is to develop an improved FDM (IFDM) to calculate the permeabilities of digital rock images with complex pore space. An elliptical pore approximation method is invoked to describe the complex pore space. The permeabilities of four types of idealized porous media are calculated by IFDM. The calculated results are in sound agreement with the analytical solutions or semi-empirical solutions. What’s more, the permeabilities of the digital rock images after grid coarsening are calculated by IFDM in three orthogonal directions. These results are compared with the previously validated lattice-Boltzmann method (LBM), which indicates that the predicted permeabilities calculated by IFDM usually agree with permeabilities calculated by LBM. We conclude that the presented IFDM is suitable for complex pore space.Shuaishuai WeiKun WangHuan ZhangJunming ZhangJincheng WeiWenyang HanLei NiuMDPI AGarticleimproved finite difference methodpermeabilitydigital rock imagepore space approximationgrid coarseningHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3290, p 3290 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	improved finite difference method permeability digital rock image pore space approximation grid coarsening Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	improved finite difference method permeability digital rock image pore space approximation grid coarsening Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Shuaishuai Wei Kun Wang Huan Zhang Junming Zhang Jincheng Wei Wenyang Han Lei Niu A Permeability Estimation Method Based on Elliptical Pore Approximation
description	Digital rock images may capture more detailed pore structure than the traditional laboratory methods. No explicit function can correlate permeability accurately for flow within the pore space. This has motivated researchers to predict permeability through the application of numerical techniques, e.g., using the finite difference method (FDM). However, in order to get better permeability calculation results, the grid refinement was needed for the traditional FDM and the accuracy of the traditional method decreased in pores with elongated cross sections. The goal of this study is to develop an improved FDM (IFDM) to calculate the permeabilities of digital rock images with complex pore space. An elliptical pore approximation method is invoked to describe the complex pore space. The permeabilities of four types of idealized porous media are calculated by IFDM. The calculated results are in sound agreement with the analytical solutions or semi-empirical solutions. What’s more, the permeabilities of the digital rock images after grid coarsening are calculated by IFDM in three orthogonal directions. These results are compared with the previously validated lattice-Boltzmann method (LBM), which indicates that the predicted permeabilities calculated by IFDM usually agree with permeabilities calculated by LBM. We conclude that the presented IFDM is suitable for complex pore space.
format	article
author	Shuaishuai Wei Kun Wang Huan Zhang Junming Zhang Jincheng Wei Wenyang Han Lei Niu
author_facet	Shuaishuai Wei Kun Wang Huan Zhang Junming Zhang Jincheng Wei Wenyang Han Lei Niu
author_sort	Shuaishuai Wei
title	A Permeability Estimation Method Based on Elliptical Pore Approximation
title_short	A Permeability Estimation Method Based on Elliptical Pore Approximation
title_full	A Permeability Estimation Method Based on Elliptical Pore Approximation
title_fullStr	A Permeability Estimation Method Based on Elliptical Pore Approximation
title_full_unstemmed	A Permeability Estimation Method Based on Elliptical Pore Approximation
title_sort	permeability estimation method based on elliptical pore approximation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/21e96090b393461394c2dbdcc1db7944
work_keys_str_mv	AT shuaishuaiwei apermeabilityestimationmethodbasedonellipticalporeapproximation AT kunwang apermeabilityestimationmethodbasedonellipticalporeapproximation AT huanzhang apermeabilityestimationmethodbasedonellipticalporeapproximation AT junmingzhang apermeabilityestimationmethodbasedonellipticalporeapproximation AT jinchengwei apermeabilityestimationmethodbasedonellipticalporeapproximation AT wenyanghan apermeabilityestimationmethodbasedonellipticalporeapproximation AT leiniu apermeabilityestimationmethodbasedonellipticalporeapproximation AT shuaishuaiwei permeabilityestimationmethodbasedonellipticalporeapproximation AT kunwang permeabilityestimationmethodbasedonellipticalporeapproximation AT huanzhang permeabilityestimationmethodbasedonellipticalporeapproximation AT junmingzhang permeabilityestimationmethodbasedonellipticalporeapproximation AT jinchengwei permeabilityestimationmethodbasedonellipticalporeapproximation AT wenyanghan permeabilityestimationmethodbasedonellipticalporeapproximation AT leiniu permeabilityestimationmethodbasedonellipticalporeapproximation
_version_	1718410078499897344

A Permeability Estimation Method Based on Elliptical Pore Approximation

Ejemplares similares