Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study

Abstract Viscous fingering is one of the main challenges that could reduce areal sweep efficiency during waterflooding in oil reservoirs. A series of waterflooding experiments were carried out in a Hele-Shaw cell at ambient temperature during which areal sweep efficiency was estimated and techniques...

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Autores principales:	Zahra Kargozarfard, Masoud Riazi, Shahab Ayatollahi
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2018
Materias:	Viscous fingering Areal sweep efficiency Front instability Mobility ratio Fractures Hele-Shaw cell Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/af17ad9e54684be3a8ea23bb6173b9f8
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spelling	oai:doaj.org-article:af17ad9e54684be3a8ea23bb6173b9f82021-12-02T09:24:43ZViscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study10.1007/s12182-018-0258-61672-51071995-8226https://doaj.org/article/af17ad9e54684be3a8ea23bb6173b9f82018-10-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-018-0258-6https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Viscous fingering is one of the main challenges that could reduce areal sweep efficiency during waterflooding in oil reservoirs. A series of waterflooding experiments were carried out in a Hele-Shaw cell at ambient temperature during which areal sweep efficiency was estimated and techniques to ease the fingering problem were examined. The onset and propagation of viscous fingers were monitored as a function of both injection rate and injection/production positions. Image processing techniques were utilized to quantitatively investigate the propagation of fingers. The experimental results show that, under specific conditions, increasing the number of finger branches could improve the areal sweep efficiency, whereas growth of a single narrow finger has a negative impact on oil displacement efficiency. According to the obtained results, increasing the injection rate improves the areal sweep efficiency up to a critical rate at which viscous fingers start to grow. The impact of heterogeneity of the medium on distributing the viscous fingers was also investigated by introducing two different arrangements of fractures in the model. The results show that fractures perpendicular to the direction of flow would distribute the displacing water more uniformly, while fractures in the direction of flow would amplify the unfavorable sweep efficiency.Zahra KargozarfardMasoud RiaziShahab AyatollahiKeAi Communications Co., Ltd.articleViscous fingeringAreal sweep efficiencyFront instabilityMobility ratioFracturesHele-Shaw cellScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 1, Pp 105-116 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Viscous fingering Areal sweep efficiency Front instability Mobility ratio Fractures Hele-Shaw cell Science Q Petrology QE420-499
spellingShingle	Viscous fingering Areal sweep efficiency Front instability Mobility ratio Fractures Hele-Shaw cell Science Q Petrology QE420-499 Zahra Kargozarfard Masoud Riazi Shahab Ayatollahi Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study
description	Abstract Viscous fingering is one of the main challenges that could reduce areal sweep efficiency during waterflooding in oil reservoirs. A series of waterflooding experiments were carried out in a Hele-Shaw cell at ambient temperature during which areal sweep efficiency was estimated and techniques to ease the fingering problem were examined. The onset and propagation of viscous fingers were monitored as a function of both injection rate and injection/production positions. Image processing techniques were utilized to quantitatively investigate the propagation of fingers. The experimental results show that, under specific conditions, increasing the number of finger branches could improve the areal sweep efficiency, whereas growth of a single narrow finger has a negative impact on oil displacement efficiency. According to the obtained results, increasing the injection rate improves the areal sweep efficiency up to a critical rate at which viscous fingers start to grow. The impact of heterogeneity of the medium on distributing the viscous fingers was also investigated by introducing two different arrangements of fractures in the model. The results show that fractures perpendicular to the direction of flow would distribute the displacing water more uniformly, while fractures in the direction of flow would amplify the unfavorable sweep efficiency.
format	article
author	Zahra Kargozarfard Masoud Riazi Shahab Ayatollahi
author_facet	Zahra Kargozarfard Masoud Riazi Shahab Ayatollahi
author_sort	Zahra Kargozarfard
title	Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study
title_short	Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study
title_full	Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study
title_fullStr	Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study
title_full_unstemmed	Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study
title_sort	viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/af17ad9e54684be3a8ea23bb6173b9f8
work_keys_str_mv	AT zahrakargozarfard viscousfingeringanditseffectonarealsweepefficiencyduringwaterfloodinganexperimentalstudy AT masoudriazi viscousfingeringanditseffectonarealsweepefficiencyduringwaterfloodinganexperimentalstudy AT shahabayatollahi viscousfingeringanditseffectonarealsweepefficiencyduringwaterfloodinganexperimentalstudy
_version_	1718398141360766976

Viscous fingering and its effect on areal sweep efficiency during waterflooding: an experimental study

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