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Kazuhisa A. Chikita, Hideo Oyagi and Kazuhiro Amita
A thermal system in the very deep Lake Tazawa (maximum depth, 423 m) was investigated by estimating the heat budget. In the heat budget estimate, the net heat input at the lake?s surface and the heat input by river inflow and groundwater inflow were cons...
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Martina Tuschl and Tomislav Kurevija
One of the important sources of renewable energy is geothermal heat. Its special feature of being independent 24/7 ensures the stability and security of the system, either for electricity or heat production. Geothermal energy has a local character and is...
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Zhiyan Liu, Yanguang Liu, Tingxin Li and Meihua Wei
Deep geothermal reservoirs have great potential for exploitation and are characterized by high temperatures, high stress, and strong heterogeneity. However, these reservoirs contain widely and continuously distributed dominant flow channels with high per...
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Jiulong Liu, Shuangbao Han, Fengtian Yang and Dongdong Yue
Dongying?s Paleogene geothermal resources are an important part of the geothermal resources of the Tianjin coastal region. The extent of the geothermal fluid resources and the supply relationship have become increasingly important, and will determine whe...
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Jun Li, Hanxiong Zhang, Yinmei Zhang, Laibin Wang and Zhigang Zhang
The lithium concentrations in the geothermal waters of the Wumishan Formation carbonate reservoir in China Xiong?an New Area are over 1 mg/L and are even higher than those in the geothermal waters of granite reservoirs in some areas of China. It is still...
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Mahmoud Eltayieb, Dieter Werthmüller, Guy Drijkoningen and Evert Slob
Tracking temperature changes by measuring the resulting resistivity changes inside low-enthalpy reservoirs is crucial to avoid early thermal breakthroughs and maintain sustainable energy production. The controlled-source electromagnetic method (CSEM) all...
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Deyang Zhao, Xiaocheng Zhou, Yongxian Zhang, Miao He, Jiao Tian, Junfeng Shen, Ying Li, Guilan Qiu, Fang Du, Xiaoming Zhang, Yao Yang, Jun Zeng, Xuelian Rui, Feng Liao and Zhijun Guan
Studying the hydrogeochemical characteristics of hot springs provides essential geochemical information for monitoring earthquake precursors and understanding the relationship between fluids, fractures, and earthquakes. This paper investigates the hydrog...
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Anna Suzuki, Ken-ichi Fukui, Shinya Onodera, Junichi Ishizaki and Toshiyuki Hashida
Numerical modeling for geothermal reservoir engineering is a crucial process to evaluate the performance of the reservoir and to develop strategies for the future development. The governing equations in the geothermal reservoir models consist of several ...
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Fengtian Yang, Dong Li, Xuejun Zhou, Tao Zhan, Yongfa Ma, Xu Wang, Junling Dong, Ling Liu, Yujia Shi and Yujuan Su
Geothermal systems represent discrete and relatively homogenous habitats for extremophiles; investigation into the microbial community is key to revealing the geochemical environment and the geochemical evolution of fluids in geothermal reservoirs. The r...
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Lianfei Kuang, Lipeng Sun, Dongxu Yu, Yijiang Wang, Zhaoxiang Chu and Jo Darkwa
Efficient fracturing is the key issue for the exploitation of geothermal energy in a Hot Dry Rock reservoir. By using the laser irradiation cracking method, this study investigates the changes in uniaxial compressive strength, ultrasonic characteristics ...
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