Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation
This paper reports formation and dissociation patterns of methane hydrate in sandstone. Magnetic resonance imaging spatially resolved hydrate growth patterns and liberation of water during dissociation. A stacked core set-up using Bentheim sandstone with dual water saturation was designed to investi...
Published in: | Energies |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI
2020
|
Subjects: | |
Online Access: | https://hdl.handle.net/1956/21688 https://doi.org/10.3390/en12173231 |
id |
ftunivbergen:oai:bora.uib.no:1956/21688 |
---|---|
record_format |
openpolar |
spelling |
ftunivbergen:oai:bora.uib.no:1956/21688 2023-05-15T17:11:42+02:00 Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation Almenningen, Stian Fotland, Per Ersland, Geir 2020-01-24T09:34:51Z application/pdf https://hdl.handle.net/1956/21688 https://doi.org/10.3390/en12173231 eng eng MDPI urn:issn:1996-1073 https://hdl.handle.net/1956/21688 https://doi.org/10.3390/en12173231 cristin:1781367 Attribution CC BY https://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Authors Energies methane hydrates in sandstone phase transitions magnetic resonance imaging Peer reviewed Journal article 2020 ftunivbergen https://doi.org/10.3390/en12173231 2023-03-14T17:39:13Z This paper reports formation and dissociation patterns of methane hydrate in sandstone. Magnetic resonance imaging spatially resolved hydrate growth patterns and liberation of water during dissociation. A stacked core set-up using Bentheim sandstone with dual water saturation was designed to investigate the effect of initial water saturation on hydrate phase transitions. The growth of methane hydrate (P = 8.3 MPa, T = 1–3 °C) was more prominent in high water saturation regions and resulted in a heterogeneous hydrate saturation controlled by the initial water distribution. The change in transverse relaxation time constant, T2, was spatially mapped during growth and showed different response depending on the initial water saturation. T2 decreased significantly during growth in high water saturation regions and remained unchanged during growth in low water saturation regions. Pressure depletion from one end of the core induced a hydrate dissociation front starting at the depletion side and moving through the core as production continued. The final saturation of water after hydrate dissociation was more uniform than the initial water saturation, demonstrating the significant redistribution of water that will take place during methane gas production from a hydrate reservoir. publishedVersion Article in Journal/Newspaper Methane hydrate University of Bergen: Bergen Open Research Archive (BORA-UiB) Energies 12 17 3231 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
methane hydrates in sandstone phase transitions magnetic resonance imaging |
spellingShingle |
methane hydrates in sandstone phase transitions magnetic resonance imaging Almenningen, Stian Fotland, Per Ersland, Geir Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation |
topic_facet |
methane hydrates in sandstone phase transitions magnetic resonance imaging |
description |
This paper reports formation and dissociation patterns of methane hydrate in sandstone. Magnetic resonance imaging spatially resolved hydrate growth patterns and liberation of water during dissociation. A stacked core set-up using Bentheim sandstone with dual water saturation was designed to investigate the effect of initial water saturation on hydrate phase transitions. The growth of methane hydrate (P = 8.3 MPa, T = 1–3 °C) was more prominent in high water saturation regions and resulted in a heterogeneous hydrate saturation controlled by the initial water distribution. The change in transverse relaxation time constant, T2, was spatially mapped during growth and showed different response depending on the initial water saturation. T2 decreased significantly during growth in high water saturation regions and remained unchanged during growth in low water saturation regions. Pressure depletion from one end of the core induced a hydrate dissociation front starting at the depletion side and moving through the core as production continued. The final saturation of water after hydrate dissociation was more uniform than the initial water saturation, demonstrating the significant redistribution of water that will take place during methane gas production from a hydrate reservoir. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Almenningen, Stian Fotland, Per Ersland, Geir |
author_facet |
Almenningen, Stian Fotland, Per Ersland, Geir |
author_sort |
Almenningen, Stian |
title |
Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation |
title_short |
Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation |
title_full |
Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation |
title_fullStr |
Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation |
title_full_unstemmed |
Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation |
title_sort |
magnetic resonance imaging of methane hydrate formation and dissociation in sandstone with dual water saturation |
publisher |
MDPI |
publishDate |
2020 |
url |
https://hdl.handle.net/1956/21688 https://doi.org/10.3390/en12173231 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Energies |
op_relation |
urn:issn:1996-1073 https://hdl.handle.net/1956/21688 https://doi.org/10.3390/en12173231 cristin:1781367 |
op_rights |
Attribution CC BY https://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Authors |
op_doi |
https://doi.org/10.3390/en12173231 |
container_title |
Energies |
container_volume |
12 |
container_issue |
17 |
container_start_page |
3231 |
_version_ |
1766068479739297792 |