Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling

Abstract Most numerical simulation studies have focused on the effect of homogenous wettability on fluid flow dynamics; however, most rocks display spatially heterogeneous wettability. Therefore, we have used direct numerical simulations (DNS) to investigate wettability heterogeneity at pore-scale....

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Autores principales:	Amir Jahanbakhsh, Omid Shahrokhi, M. Mercedes Maroto-Valer
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d5d517e112f0454caa5ca1c30ac576fa
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spelling	oai:doaj.org-article:d5d517e112f0454caa5ca1c30ac576fa2021-12-02T17:19:15ZUnderstanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling10.1038/s41598-021-97169-82045-2322https://doaj.org/article/d5d517e112f0454caa5ca1c30ac576fa2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97169-8https://doaj.org/toc/2045-2322Abstract Most numerical simulation studies have focused on the effect of homogenous wettability on fluid flow dynamics; however, most rocks display spatially heterogeneous wettability. Therefore, we have used direct numerical simulations (DNS) to investigate wettability heterogeneity at pore-scale. We have built a quasi-3D pore-scale model and simulated two-phase flow in a homogenous porous media with homogenous and heterogeneous wettability distributions. Five different heterogeneous wettability patterns were used in this study. We observed that heterogenous wettability significantly affects the evolution of fluid interface, trapped saturation, and displacement patterns. Wettability heterogeneity results in fingering and specific trapping patterns which do not follow the flow behaviour characteristic of a porous medium with homogenous wettability. This flow behaviour indicates a different flow regime that cannot be estimated using homogenous wettability distributions represented by an average contact angle. Moreover, our simulation results show that certain spatial configurations of wettability heterogeneity at the microscale, e.g. being perpendicular to the flow direction, may assist the stability of the displacement and delay the breakthrough time. In contrast, other configurations such as being parallel to the flow direction promote flow instability for the same pore-scale geometry.Amir JahanbakhshOmid ShahrokhiM. Mercedes Maroto-ValerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Amir Jahanbakhsh Omid Shahrokhi M. Mercedes Maroto-Valer Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling
description	Abstract Most numerical simulation studies have focused on the effect of homogenous wettability on fluid flow dynamics; however, most rocks display spatially heterogeneous wettability. Therefore, we have used direct numerical simulations (DNS) to investigate wettability heterogeneity at pore-scale. We have built a quasi-3D pore-scale model and simulated two-phase flow in a homogenous porous media with homogenous and heterogeneous wettability distributions. Five different heterogeneous wettability patterns were used in this study. We observed that heterogenous wettability significantly affects the evolution of fluid interface, trapped saturation, and displacement patterns. Wettability heterogeneity results in fingering and specific trapping patterns which do not follow the flow behaviour characteristic of a porous medium with homogenous wettability. This flow behaviour indicates a different flow regime that cannot be estimated using homogenous wettability distributions represented by an average contact angle. Moreover, our simulation results show that certain spatial configurations of wettability heterogeneity at the microscale, e.g. being perpendicular to the flow direction, may assist the stability of the displacement and delay the breakthrough time. In contrast, other configurations such as being parallel to the flow direction promote flow instability for the same pore-scale geometry.
format	article
author	Amir Jahanbakhsh Omid Shahrokhi M. Mercedes Maroto-Valer
author_facet	Amir Jahanbakhsh Omid Shahrokhi M. Mercedes Maroto-Valer
author_sort	Amir Jahanbakhsh
title	Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling
title_short	Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling
title_full	Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling
title_fullStr	Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling
title_full_unstemmed	Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling
title_sort	understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3d pore-scale modelling
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d5d517e112f0454caa5ca1c30ac576fa
work_keys_str_mv	AT amirjahanbakhsh understandingtheroleofwettabilitydistributiononporefillinganddisplacementpatternsinahomogeneousstructureviaquasi3dporescalemodelling AT omidshahrokhi understandingtheroleofwettabilitydistributiononporefillinganddisplacementpatternsinahomogeneousstructureviaquasi3dporescalemodelling AT mmercedesmarotovaler understandingtheroleofwettabilitydistributiononporefillinganddisplacementpatternsinahomogeneousstructureviaquasi3dporescalemodelling
_version_	1718381051929165824

Understanding the role of wettability distribution on pore-filling and displacement patterns in a homogeneous structure via quasi 3D pore-scale modelling

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