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Conference Paper/Proceeding/Abstract 1365 views

Three-phase fracturing in granular material

James Campbell, Bjornar Sandnes Orcid Logo

Geophysical research Abstracts, EGU2015, Volume: 17, Issue: 13829

Swansea University Author: Bjornar Sandnes Orcid Logo

Abstract

There exist numerous geo-engineering scenarios involving the invasion of a gas into a water-saturated porousmedium: in fracking, this may occur during the fracking process itself or during subsequent gas penetration intopropant beds; the process is also at the heart of carbon dioxide sequestration.W...

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Published in: Geophysical research Abstracts, EGU2015
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa21346
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spelling 2016-08-04T14:15:17.6930674 v2 21346 2015-05-13 Three-phase fracturing in granular material 61c7c04b5c804d9402caf4881e85234b 0000-0002-4854-5857 Bjornar Sandnes Bjornar Sandnes true false 2015-05-13 CHEG There exist numerous geo-engineering scenarios involving the invasion of a gas into a water-saturated porousmedium: in fracking, this may occur during the fracking process itself or during subsequent gas penetration intopropant beds; the process is also at the heart of carbon dioxide sequestration.We use a bed of water-saturated glass beads confined within a Hele-Shaw cell as a model system to illuminatethese processes. Depending on packing density, injection rate and other factors, air injected into this systemmay invade in a broad variety of patterns, including viscous fingering, capillary invasion, bubble formation andfracturing. Here we focus primarily on the latter case.Fracturing is observed when air is injected into a loosely packed bed of unconsolidated granular material.Our approach allows us to image the complete fracture pattern as it forms, and as such to study both thetopographical properties of the resulting pattern (fracture density, braching frequency etc) and the dynamics of itsgrowth.We present an overview of the fracturing phenomenon within the context of pattern formation in granularfluids as a whole. We discuss how fracturing arises from an interplay between frictional, capillary and viscousforces, and demonstrate the influence of various parameters on the result. Conference Paper/Proceeding/Abstract Geophysical research Abstracts, EGU2015 17 13829 Multiphase flow, granular material, fracturing, capillary, frictional fluids 31 12 2015 2015-12-31 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2016-08-04T14:15:17.6930674 2015-05-13T10:12:15.2231039 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering James Campbell 1 Bjornar Sandnes 0000-0002-4854-5857 2
title Three-phase fracturing in granular material
spellingShingle Three-phase fracturing in granular material
Bjornar Sandnes
title_short Three-phase fracturing in granular material
title_full Three-phase fracturing in granular material
title_fullStr Three-phase fracturing in granular material
title_full_unstemmed Three-phase fracturing in granular material
title_sort Three-phase fracturing in granular material
author_id_str_mv 61c7c04b5c804d9402caf4881e85234b
author_id_fullname_str_mv 61c7c04b5c804d9402caf4881e85234b_***_Bjornar Sandnes
author Bjornar Sandnes
author2 James Campbell
Bjornar Sandnes
format Conference Paper/Proceeding/Abstract
container_title Geophysical research Abstracts, EGU2015
container_volume 17
container_issue 13829
publishDate 2015
institution Swansea University
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 0
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description There exist numerous geo-engineering scenarios involving the invasion of a gas into a water-saturated porousmedium: in fracking, this may occur during the fracking process itself or during subsequent gas penetration intopropant beds; the process is also at the heart of carbon dioxide sequestration.We use a bed of water-saturated glass beads confined within a Hele-Shaw cell as a model system to illuminatethese processes. Depending on packing density, injection rate and other factors, air injected into this systemmay invade in a broad variety of patterns, including viscous fingering, capillary invasion, bubble formation andfracturing. Here we focus primarily on the latter case.Fracturing is observed when air is injected into a loosely packed bed of unconsolidated granular material.Our approach allows us to image the complete fracture pattern as it forms, and as such to study both thetopographical properties of the resulting pattern (fracture density, braching frequency etc) and the dynamics of itsgrowth.We present an overview of the fracturing phenomenon within the context of pattern formation in granularfluids as a whole. We discuss how fracturing arises from an interplay between frictional, capillary and viscousforces, and demonstrate the influence of various parameters on the result.
published_date 2015-12-31T03:25:17Z
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