Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs

Abstract We have developed a new continuous monitoring system based on small seismic sources and distributed acoustic sensing (DAS). The source system generates continuous waveforms with a wide frequency range. Because the signal timing is accurately controlled, stacking the continuous waveforms enh...

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Autores principales:	Takeshi Tsuji, Tatsunori Ikeda, Ryosuke Matsuura, Kota Mukumoto, Fernando Lawrens Hutapea, Tsunehisa Kimura, Koshun Yamaoka, Masanao Shinohara
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9d162e4b63794b1a9d6688edc7c67344
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spelling	oai:doaj.org-article:9d162e4b63794b1a9d6688edc7c673442021-12-02T17:18:21ZContinuous monitoring system for safe managements of CO2 storage and geothermal reservoirs10.1038/s41598-021-97881-52045-2322https://doaj.org/article/9d162e4b63794b1a9d6688edc7c673442021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97881-5https://doaj.org/toc/2045-2322Abstract We have developed a new continuous monitoring system based on small seismic sources and distributed acoustic sensing (DAS). The source system generates continuous waveforms with a wide frequency range. Because the signal timing is accurately controlled, stacking the continuous waveforms enhances the signal-to-noise ratio, allowing the use of a small seismic source to monitor extensive areas (multi-reservoir). Our field experiments demonstrated that the monitoring signal was detected at a distance of ~ 80 km, and temporal variations of the monitoring signal (i.e., seismic velocity) were identified with an error of < 0.01%. Through the monitoring, we identified pore pressure variations due to geothermal operations and rains. When we used seafloor cable for DAS measurements, we identified the monitoring signals at > 10 km far from the source in high-spatial resolution. This study demonstrates that multi-reservoir in an extensive area can be continuously monitored at a relatively low cost by combining our seismic source and DAS.Takeshi TsujiTatsunori IkedaRyosuke MatsuuraKota MukumotoFernando Lawrens HutapeaTsunehisa KimuraKoshun YamaokaMasanao ShinoharaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takeshi Tsuji Tatsunori Ikeda Ryosuke Matsuura Kota Mukumoto Fernando Lawrens Hutapea Tsunehisa Kimura Koshun Yamaoka Masanao Shinohara Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs
description	Abstract We have developed a new continuous monitoring system based on small seismic sources and distributed acoustic sensing (DAS). The source system generates continuous waveforms with a wide frequency range. Because the signal timing is accurately controlled, stacking the continuous waveforms enhances the signal-to-noise ratio, allowing the use of a small seismic source to monitor extensive areas (multi-reservoir). Our field experiments demonstrated that the monitoring signal was detected at a distance of ~ 80 km, and temporal variations of the monitoring signal (i.e., seismic velocity) were identified with an error of < 0.01%. Through the monitoring, we identified pore pressure variations due to geothermal operations and rains. When we used seafloor cable for DAS measurements, we identified the monitoring signals at > 10 km far from the source in high-spatial resolution. This study demonstrates that multi-reservoir in an extensive area can be continuously monitored at a relatively low cost by combining our seismic source and DAS.
format	article
author	Takeshi Tsuji Tatsunori Ikeda Ryosuke Matsuura Kota Mukumoto Fernando Lawrens Hutapea Tsunehisa Kimura Koshun Yamaoka Masanao Shinohara
author_facet	Takeshi Tsuji Tatsunori Ikeda Ryosuke Matsuura Kota Mukumoto Fernando Lawrens Hutapea Tsunehisa Kimura Koshun Yamaoka Masanao Shinohara
author_sort	Takeshi Tsuji
title	Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs
title_short	Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs
title_full	Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs
title_fullStr	Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs
title_full_unstemmed	Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs
title_sort	continuous monitoring system for safe managements of co2 storage and geothermal reservoirs
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9d162e4b63794b1a9d6688edc7c67344
work_keys_str_mv	AT takeshitsuji continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs AT tatsunoriikeda continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs AT ryosukematsuura continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs AT kotamukumoto continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs AT fernandolawrenshutapea continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs AT tsunehisakimura continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs AT koshunyamaoka continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs AT masanaoshinohara continuousmonitoringsystemforsafemanagementsofco2storageandgeothermalreservoirs
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Continuous monitoring system for safe managements of CO2 storage and geothermal reservoirs

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