Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity
Abstract On Earth, natural hydrates are mostly encountered in clay‐rich sediments. Yet their formation processes in such matrices remain poorly understood. Achieving an in‐depth understanding of how methane hydrates accumulate on continental margins is key to accurately assess (a) their role in sust...
Published in: | Journal of Geophysical Research: Solid Earth |
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Online Access: | https://hal.science/hal-04310817 https://doi.org/10.1029/2023JB027333 |
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ftccsdartic:oai:HAL:hal-04310817v1 2024-02-27T08:42:50+00:00 Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity Constant Agnissan, Art‐clarie Guimpier, Charlène Terzariol, Marco Fandino, Olivia Chéron, Sandrine Riboulot, Vincent Desmedt, Arnaud Ruffine, Livio Institut des Sciences Moléculaires (ISM) Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) ANR-18-CE01-0007,BLAME,Le méthane en Mer Noire: du sédiment jusqu'à l'hydrosphère et son impact sur l'évaluation de l'aléa(2018) ANR-22-CE29-0025,HYDRACLAY,Physico-chimie d'hydrates de gaz sédimentaires reproduisant leur environnement géologique naturel.(2022) 2023-09-04 https://hal.science/hal-04310817 https://doi.org/10.1029/2023JB027333 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JB027333 hal-04310817 https://hal.science/hal-04310817 doi:10.1029/2023JB027333 ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal.science/hal-04310817 Journal of Geophysical Research : Solid Earth, 2023, 128 (9), ⟨10.1029/2023JB027333⟩ [CHIM]Chemical Sciences [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftccsdartic https://doi.org/10.1029/2023JB027333 2024-01-28T00:19:11Z Abstract On Earth, natural hydrates are mostly encountered in clay‐rich sediments. Yet their formation processes in such matrices remain poorly understood. Achieving an in‐depth understanding of how methane hydrates accumulate on continental margins is key to accurately assess (a) their role in sustaining the development of some chemosynthetic communities at cold seeps, (b) their potential in terms of energy resources and geohazards, and (c) the fate of the methane releases, a powerful greenhouse gas, in this changing climate. This study investigated the formation of methane hydrates and their gas storage capacity (GSC) in clay‐rich sediments. A set of hydrate experiments were performed in matrices composed of sand, illite‐rich clay, and montmorillonite‐rich clay at different proportions aiming to determine the role of mineralogy on hydrate formation processes. The experiments demonstrate that a clay content of 10% in a partially water saturated sand/clay mixture increases the induction time by ∼60%, irrespective of the nature of the clay used. The increase in water saturation in the two matrices promotes hydrate formation. Micro‐Raman spectroscopic analyses reveal that increasing the clay content leads to a decrease in the hydrate small‐cage occupancy, with an impact on the storage capacity. Finally, the analyses of collected natural samples from the Black Sea (off Romania) enable us to estimate the GSC of the deposit. Our estimates is different from previous ones, and supports the importance of coupling multiscale properties, from the microscale to the geological scale, to accurately assess the total amount of methane hosts in hydrate deposits worldwide. Article in Journal/Newspaper Methane hydrate Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Geophysical Research: Solid Earth 128 9 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[CHIM]Chemical Sciences [SDE]Environmental Sciences |
spellingShingle |
[CHIM]Chemical Sciences [SDE]Environmental Sciences Constant Agnissan, Art‐clarie Guimpier, Charlène Terzariol, Marco Fandino, Olivia Chéron, Sandrine Riboulot, Vincent Desmedt, Arnaud Ruffine, Livio Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity |
topic_facet |
[CHIM]Chemical Sciences [SDE]Environmental Sciences |
description |
Abstract On Earth, natural hydrates are mostly encountered in clay‐rich sediments. Yet their formation processes in such matrices remain poorly understood. Achieving an in‐depth understanding of how methane hydrates accumulate on continental margins is key to accurately assess (a) their role in sustaining the development of some chemosynthetic communities at cold seeps, (b) their potential in terms of energy resources and geohazards, and (c) the fate of the methane releases, a powerful greenhouse gas, in this changing climate. This study investigated the formation of methane hydrates and their gas storage capacity (GSC) in clay‐rich sediments. A set of hydrate experiments were performed in matrices composed of sand, illite‐rich clay, and montmorillonite‐rich clay at different proportions aiming to determine the role of mineralogy on hydrate formation processes. The experiments demonstrate that a clay content of 10% in a partially water saturated sand/clay mixture increases the induction time by ∼60%, irrespective of the nature of the clay used. The increase in water saturation in the two matrices promotes hydrate formation. Micro‐Raman spectroscopic analyses reveal that increasing the clay content leads to a decrease in the hydrate small‐cage occupancy, with an impact on the storage capacity. Finally, the analyses of collected natural samples from the Black Sea (off Romania) enable us to estimate the GSC of the deposit. Our estimates is different from previous ones, and supports the importance of coupling multiscale properties, from the microscale to the geological scale, to accurately assess the total amount of methane hosts in hydrate deposits worldwide. |
author2 |
Institut des Sciences Moléculaires (ISM) Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) ANR-18-CE01-0007,BLAME,Le méthane en Mer Noire: du sédiment jusqu'à l'hydrosphère et son impact sur l'évaluation de l'aléa(2018) ANR-22-CE29-0025,HYDRACLAY,Physico-chimie d'hydrates de gaz sédimentaires reproduisant leur environnement géologique naturel.(2022) |
format |
Article in Journal/Newspaper |
author |
Constant Agnissan, Art‐clarie Guimpier, Charlène Terzariol, Marco Fandino, Olivia Chéron, Sandrine Riboulot, Vincent Desmedt, Arnaud Ruffine, Livio |
author_facet |
Constant Agnissan, Art‐clarie Guimpier, Charlène Terzariol, Marco Fandino, Olivia Chéron, Sandrine Riboulot, Vincent Desmedt, Arnaud Ruffine, Livio |
author_sort |
Constant Agnissan, Art‐clarie |
title |
Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity |
title_short |
Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity |
title_full |
Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity |
title_fullStr |
Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity |
title_full_unstemmed |
Influence of Clay‐Containing Sediments on Methane Hydrate Formation: Impacts on Kinetic Behavior and Gas Storage Capacity |
title_sort |
influence of clay‐containing sediments on methane hydrate formation: impacts on kinetic behavior and gas storage capacity |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04310817 https://doi.org/10.1029/2023JB027333 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal.science/hal-04310817 Journal of Geophysical Research : Solid Earth, 2023, 128 (9), ⟨10.1029/2023JB027333⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JB027333 hal-04310817 https://hal.science/hal-04310817 doi:10.1029/2023JB027333 |
op_doi |
https://doi.org/10.1029/2023JB027333 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
128 |
container_issue |
9 |
_version_ |
1792050632126889984 |