Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production
Marine methane hydrate in sands has huge potential as an unconventional gas resource; however, no field test of their production potential had been conducted. Here, we report the world’s first offshore methane hydrate production test conducted at the eastern Nankai Trough and show key findings towar...
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American Chemical Society
2017
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Online Access: | https://oceanrep.geomar.de/id/eprint/40165/ https://oceanrep.geomar.de/id/eprint/40165/1/Konno.pdf https://doi.org/10.1021/acs.energyfuels.6b03143 |
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ftoceanrep:oai:oceanrep.geomar.de:40165 2023-05-15T17:11:41+02:00 Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production Konno, Yoshihiro Fujii, Tetsuya Sato, Akihiko Akamine, Koya Naiki, Motoyoshi Masuda, Yoshihiro Yamamoto, Koji Nagao, Jiro 2017 text https://oceanrep.geomar.de/id/eprint/40165/ https://oceanrep.geomar.de/id/eprint/40165/1/Konno.pdf https://doi.org/10.1021/acs.energyfuels.6b03143 en eng American Chemical Society https://oceanrep.geomar.de/id/eprint/40165/1/Konno.pdf Konno, Y., Fujii, T., Sato, A., Akamine, K., Naiki, M., Masuda, Y., Yamamoto, K. and Nagao, J. (2017) Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production. Energy & Fuels, 31 (3). pp. 2607-2616. DOI 10.1021/acs.energyfuels.6b03143 <https://doi.org/10.1021/acs.energyfuels.6b03143>. doi:10.1021/acs.energyfuels.6b03143 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2017 ftoceanrep https://doi.org/10.1021/acs.energyfuels.6b03143 2023-04-07T15:36:21Z Marine methane hydrate in sands has huge potential as an unconventional gas resource; however, no field test of their production potential had been conducted. Here, we report the world’s first offshore methane hydrate production test conducted at the eastern Nankai Trough and show key findings toward future commercial production. Geological analysis indicates that hydrate saturation reaches 80% and permeability in the presence of hydrate ranges from 0.01 to 10 mdarcies. Permeable (1–10 mdarcies) highly hydrate-saturated layers enable depressurization-induced gas production of approximately 20,000 Sm3/D with water of 200 m3/D. Numerical analysis reveals that the dissociation zone expands laterally 25 m at the front after 6 days. Gas rate is expected to increase with time, owing to the expansion of the dissociation zone. It is found that permeable highly hydrate-saturated layers increase the gas–water ratio of the production fluid. The identification of such layers is critically important to increase the energy efficiency and the technical feasibility of depressurization-induced gas production from hydrate reservoirs. Article in Journal/Newspaper Methane hydrate OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Energy & Fuels 31 3 2607 2616 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Marine methane hydrate in sands has huge potential as an unconventional gas resource; however, no field test of their production potential had been conducted. Here, we report the world’s first offshore methane hydrate production test conducted at the eastern Nankai Trough and show key findings toward future commercial production. Geological analysis indicates that hydrate saturation reaches 80% and permeability in the presence of hydrate ranges from 0.01 to 10 mdarcies. Permeable (1–10 mdarcies) highly hydrate-saturated layers enable depressurization-induced gas production of approximately 20,000 Sm3/D with water of 200 m3/D. Numerical analysis reveals that the dissociation zone expands laterally 25 m at the front after 6 days. Gas rate is expected to increase with time, owing to the expansion of the dissociation zone. It is found that permeable highly hydrate-saturated layers increase the gas–water ratio of the production fluid. The identification of such layers is critically important to increase the energy efficiency and the technical feasibility of depressurization-induced gas production from hydrate reservoirs. |
format |
Article in Journal/Newspaper |
author |
Konno, Yoshihiro Fujii, Tetsuya Sato, Akihiko Akamine, Koya Naiki, Motoyoshi Masuda, Yoshihiro Yamamoto, Koji Nagao, Jiro |
spellingShingle |
Konno, Yoshihiro Fujii, Tetsuya Sato, Akihiko Akamine, Koya Naiki, Motoyoshi Masuda, Yoshihiro Yamamoto, Koji Nagao, Jiro Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production |
author_facet |
Konno, Yoshihiro Fujii, Tetsuya Sato, Akihiko Akamine, Koya Naiki, Motoyoshi Masuda, Yoshihiro Yamamoto, Koji Nagao, Jiro |
author_sort |
Konno, Yoshihiro |
title |
Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production |
title_short |
Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production |
title_full |
Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production |
title_fullStr |
Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production |
title_full_unstemmed |
Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production |
title_sort |
key findings of the world’s first offshore methane hydrate production test off the coast of japan: toward future commercial production |
publisher |
American Chemical Society |
publishDate |
2017 |
url |
https://oceanrep.geomar.de/id/eprint/40165/ https://oceanrep.geomar.de/id/eprint/40165/1/Konno.pdf https://doi.org/10.1021/acs.energyfuels.6b03143 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
https://oceanrep.geomar.de/id/eprint/40165/1/Konno.pdf Konno, Y., Fujii, T., Sato, A., Akamine, K., Naiki, M., Masuda, Y., Yamamoto, K. and Nagao, J. (2017) Key Findings of the World’s First Offshore Methane Hydrate Production Test off the Coast of Japan: Toward Future Commercial Production. Energy & Fuels, 31 (3). pp. 2607-2616. DOI 10.1021/acs.energyfuels.6b03143 <https://doi.org/10.1021/acs.energyfuels.6b03143>. doi:10.1021/acs.energyfuels.6b03143 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1021/acs.energyfuels.6b03143 |
container_title |
Energy & Fuels |
container_volume |
31 |
container_issue |
3 |
container_start_page |
2607 |
op_container_end_page |
2616 |
_version_ |
1766068462578302976 |