Estimation of an ultra-high-temperature geothermal reservoir model in the Kakkonda geothermal field, northeastern Japan

Suzuki, Yota; Akatsuka, Takashi; Yamaya, Yusuke; Watanabe, Norihiro; Okamoto, Kyosuke; Osato, Kazumi; Kajiwara, Toshinori; Ogawa, Yasuo; Mogi, Toru; Tsuchiya, Noriyoshi; Asanuma, Hiroshi

doi:10.1016/j.geothermics.2022.102525

Cited by 6 publications

(1 citation statement)

References 34 publications

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“…This potential for deformation, when combined with the presence of specific geological features such as pyroclastic andesite lava lithology, highlights the necessity for careful and thorough evaluation in both the design of structures and the planning of geothermal infrastructure. The intricate nature of these factors necessitates a meticulous approach in order to ensure the safety and efficiency of such projects (Suzuki et al, 2022;Toledo et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Analysis of the Effect of Local Magnitude on Peak Ground Acceleration and Seismic Vulnerability Index for Geothermal Field Monitoring Using Microearthquake

Utama,

Indriani,

Garini

2023

jppipa, pendidikan ipa, fisika, biologi, kimia

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Intensive exploitation of geothermal injection and production can trigger microearthquakes which it signals come from dynamic fractures. The purpose of this study is to decide the impact of local magnitude on mitigation in geothermal fields based on soil acceleration and vulnerability of seismic in geothermal fields. This study uses seismic wave recording data and the geology of the research area. It is focable on calculating local magnitude, ground acceleration and seismic susceptibility index to earthquakes based on ground acceleration and seismic susceptibility index in geothermal fields. The maximum amplitude value represent that the medium classification class (3<A0<6) is associated with a moderate degree of deformation. Natural frequency value are found with a moderate classification (4<f0<10) around the area of injection wells and production wells, indicating that the research area has a moderate level of soil hardness structure. The peak ground acceleration in the study area is classified as moderate (0.25<PGA<0.7) which means that the area has a moderate level of risk. Vulnerability of seismic in the study area is included in the low classification (Kg<10). The local magnitude impact on soil acceleration and vulnerability of seismic in this study has a moderate risk and can be categorised as safe. In the future, this research serves as a basis for proper decision-making in geothermal energy operations, monitoring, and infrastructure development

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Section: Discussionmentioning

confidence: 99%

Analysis of the Effect of Local Magnitude on Peak Ground Acceleration and Seismic Vulnerability Index for Geothermal Field Monitoring Using Microearthquake

Utama,

Indriani,

Garini

2023

jppipa, pendidikan ipa, fisika, biologi, kimia

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Impact of well placement and flow rate on production efficiency and stress field in the fractured geothermal reservoirs

Wu,

Cai,

et al. 2023

Deep Underground Science and Engineering

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Geothermal energy has gained wide attention as a renewable alternative for mitigating greenhouse gas emissions. The advancements in enhanced geothermal system technology have enabled the exploitation of previously inaccessible geothermal resources. However, the extraction of geothermal energy from deep reservoirs poses many challenges due to high‐temperature and high‐geostress conditions. These factors can significantly impact the surrounding rock and its fracture formation. A comprehensive understanding of the thermal–hydraulic–mechanical (THM) coupling effect is crucial to the safe and efficient exploitation of geothermal resources. This study presented a THM coupling numerical model for the geothermal reservoir of the Yangbajing geothermal system. This proposed model investigated the geothermal exploitation performance and the stress distribution within the reservoir under various combinations of geothermal wells and mass flow rates. The geothermal system performance was evaluated by the criteria of outlet temperature and geothermal productivity. The results indicate that the longer distance between wells can increase the outlet temperature of production wells and improve extraction efficiency in the short term. In contrast, the shorter distance between wells can reduce the heat exchange area and thus mitigate the impact on the reservoir stress. A larger mass flow rate is conducive to the production capacity enhancement of the geothermal system and, in turn causes a wider range of stress disturbance. These findings provide valuable insights into the optimization of geothermal energy extraction while considering reservoir safety and long‐term sustainability. This study deepens the understanding of the THM coupling effects in geothermal systems and provides an efficient and environmentally friendly strategy for a geothermal energy system.

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Vertical electrical sounding for revealing the groundwater resources in the geothermal spring of Jaboi volcano

Yanis,

Zaini,

Abdullah

et al. 2023

Acta Geophys.

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Estimation of an ultra-high-temperature geothermal reservoir model in the Kakkonda geothermal field, northeastern Japan

Cited by 6 publications

References 34 publications

Analysis of the Effect of Local Magnitude on Peak Ground Acceleration and Seismic Vulnerability Index for Geothermal Field Monitoring Using Microearthquake

Analysis of the Effect of Local Magnitude on Peak Ground Acceleration and Seismic Vulnerability Index for Geothermal Field Monitoring Using Microearthquake

Impact of well placement and flow rate on production efficiency and stress field in the fractured geothermal reservoirs

Vertical electrical sounding for revealing the groundwater resources in the geothermal spring of Jaboi volcano

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