A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model

Abstract Faults are generally represented in conventional upscaled models as 2D planar surfaces with transmissibility multipliers used to represent single-phase fault properties. However, faults are structurally complex 3D zones in which both single-phase and two-phase fault rock properties can be s...

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Autores principales:	Md Saiful Islam, Tom Manzocchi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/76da63cff14f4366a617aa67311cf7ba
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spelling	oai:doaj.org-article:76da63cff14f4366a617aa67311cf7ba2021-12-02T19:17:05ZA novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model10.1038/s41598-021-99024-22045-2322https://doaj.org/article/76da63cff14f4366a617aa67311cf7ba2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-99024-2https://doaj.org/toc/2045-2322Abstract Faults are generally represented in conventional upscaled models as 2D planar surfaces with transmissibility multipliers used to represent single-phase fault properties. However, faults are structurally complex 3D zones in which both single-phase and two-phase fault rock properties can be significant. Ignoring this structural and petrophysical complexity within faults may impart considerable inaccuracy on the predictive performance of upscaled models. This study has developed a two-phase flow-based geometrical upscaling method capable of representing simultaneously the complex geometry and saturation-dependent two-phase flow properties of realistic fault zones. In this approach, high-resolution sector models are built of small portions of the fault zones and assigned appropriate single-phase and two-phase fault rock properties. Steady state two-phase flow simulations at different fractional flows of oil and water are used to determine the saturation dependent upscaled pseudo relative permeability functions which are incorporated into upscaled models. The method is applied to an example model containing two 3D fault zone components and tested by comparing the flow results of upscaled model with those of a high-resolution truth model. Results show that two-phase flow-based geometrical upscaling is a promising method for representing the effects of two-phase fault rock properties and complex 3D fault zone structure simultaneously.Md Saiful IslamTom ManzocchiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Md Saiful Islam Tom Manzocchi A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model
description	Abstract Faults are generally represented in conventional upscaled models as 2D planar surfaces with transmissibility multipliers used to represent single-phase fault properties. However, faults are structurally complex 3D zones in which both single-phase and two-phase fault rock properties can be significant. Ignoring this structural and petrophysical complexity within faults may impart considerable inaccuracy on the predictive performance of upscaled models. This study has developed a two-phase flow-based geometrical upscaling method capable of representing simultaneously the complex geometry and saturation-dependent two-phase flow properties of realistic fault zones. In this approach, high-resolution sector models are built of small portions of the fault zones and assigned appropriate single-phase and two-phase fault rock properties. Steady state two-phase flow simulations at different fractional flows of oil and water are used to determine the saturation dependent upscaled pseudo relative permeability functions which are incorporated into upscaled models. The method is applied to an example model containing two 3D fault zone components and tested by comparing the flow results of upscaled model with those of a high-resolution truth model. Results show that two-phase flow-based geometrical upscaling is a promising method for representing the effects of two-phase fault rock properties and complex 3D fault zone structure simultaneously.
format	article
author	Md Saiful Islam Tom Manzocchi
author_facet	Md Saiful Islam Tom Manzocchi
author_sort	Md Saiful Islam
title	A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model
title_short	A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model
title_full	A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model
title_fullStr	A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model
title_full_unstemmed	A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model
title_sort	novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/76da63cff14f4366a617aa67311cf7ba
work_keys_str_mv	AT mdsaifulislam anovelflowbasedgeometricalupscalingmethodforrepresentingfaultzoneswithtwophasefaultrockpropertiesintoadynamicreservoirmodel AT tommanzocchi anovelflowbasedgeometricalupscalingmethodforrepresentingfaultzoneswithtwophasefaultrockpropertiesintoadynamicreservoirmodel AT mdsaifulislam novelflowbasedgeometricalupscalingmethodforrepresentingfaultzoneswithtwophasefaultrockpropertiesintoadynamicreservoirmodel AT tommanzocchi novelflowbasedgeometricalupscalingmethodforrepresentingfaultzoneswithtwophasefaultrockpropertiesintoadynamicreservoirmodel
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A novel flow-based geometrical upscaling method for representing fault zones with two-phase fault rock properties into a dynamic reservoir model

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