Relative permeability for water and gas through fractures in cement.

Relative permeability is an important attribute influencing subsurface multiphase flow. Characterization of relative permeability is necessary to support activities such as carbon sequestration, geothermal energy production, and oil and gas exploration. Previous research efforts have largely neglect...

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Main Authors: Kenton A Rod, Wooyong Um, Sean M Colby, Mark L Rockhold, Christopher E Strickland, Sangsoo Han, Andrew P Kuprat
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2019-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0210741
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spelling doaj-17c4659d2b444448aa6e943fb25273eb2021-03-03T20:57:07ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01141e021074110.1371/journal.pone.0210741Relative permeability for water and gas through fractures in cement.Kenton A RodWooyong UmSean M ColbyMark L RockholdChristopher E StricklandSangsoo HanAndrew P KupratRelative permeability is an important attribute influencing subsurface multiphase flow. Characterization of relative permeability is necessary to support activities such as carbon sequestration, geothermal energy production, and oil and gas exploration. Previous research efforts have largely neglected the relative permeability of wellbore cement used to seal well bores where risks of leak are significant. Therefore this study was performed to evaluate fracturing on permeability and relative permeability of wellbore cement. Studies of relative permeability of water and air were conducted using ordinary Portland cement paste cylinders having fracture networks that exhibited a range of permeability values. The measured relative permeability was compared with three models, 1) Corey-curve, often used for modeling relative permeability in porous media, 2) X-curve, commonly used to represent relative permeability of fractures, and 3) Burdine model based on fitting the Brooks-Corey function to fracture saturation-pressure data inferred from x-ray computed tomography (XCT) derived aperture distribution results. Experimentally-determined aqueous relative permeability was best described by the Burdine model. Though water phase tended to follow the Corey-curve for the simple fracture system while air relative permeability was best described by the X-curve.https://doi.org/10.1371/journal.pone.0210741
collection DOAJ
language English
format Article
sources DOAJ
author Kenton A Rod
Wooyong Um
Sean M Colby
Mark L Rockhold
Christopher E Strickland
Sangsoo Han
Andrew P Kuprat
spellingShingle Kenton A Rod
Wooyong Um
Sean M Colby
Mark L Rockhold
Christopher E Strickland
Sangsoo Han
Andrew P Kuprat
Relative permeability for water and gas through fractures in cement.
PLoS ONE
author_facet Kenton A Rod
Wooyong Um
Sean M Colby
Mark L Rockhold
Christopher E Strickland
Sangsoo Han
Andrew P Kuprat
author_sort Kenton A Rod
title Relative permeability for water and gas through fractures in cement.
title_short Relative permeability for water and gas through fractures in cement.
title_full Relative permeability for water and gas through fractures in cement.
title_fullStr Relative permeability for water and gas through fractures in cement.
title_full_unstemmed Relative permeability for water and gas through fractures in cement.
title_sort relative permeability for water and gas through fractures in cement.
publisher Public Library of Science (PLoS)
series PLoS ONE
issn 1932-6203
publishDate 2019-01-01
description Relative permeability is an important attribute influencing subsurface multiphase flow. Characterization of relative permeability is necessary to support activities such as carbon sequestration, geothermal energy production, and oil and gas exploration. Previous research efforts have largely neglected the relative permeability of wellbore cement used to seal well bores where risks of leak are significant. Therefore this study was performed to evaluate fracturing on permeability and relative permeability of wellbore cement. Studies of relative permeability of water and air were conducted using ordinary Portland cement paste cylinders having fracture networks that exhibited a range of permeability values. The measured relative permeability was compared with three models, 1) Corey-curve, often used for modeling relative permeability in porous media, 2) X-curve, commonly used to represent relative permeability of fractures, and 3) Burdine model based on fitting the Brooks-Corey function to fracture saturation-pressure data inferred from x-ray computed tomography (XCT) derived aperture distribution results. Experimentally-determined aqueous relative permeability was best described by the Burdine model. Though water phase tended to follow the Corey-curve for the simple fracture system while air relative permeability was best described by the X-curve.
url https://doi.org/10.1371/journal.pone.0210741
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