CO2 Geothermal Power Generation: Laboratory Experiment on the Interaction Between Carbonated Water and Rishiri Island Basalt in the Vicinity of Injection Wells DOI Creative Commons
Shosuke Satake, Heejun Yang,

Koji Mori

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(9), P. 2251 - 2251

Published: April 28, 2025

Novel geothermal power generation systems are being developed that use supercritical CO2 as the heat transfer medium. In this technology, some injected into underground reacts with surrounding water and rocks to form secondary minerals, such carbonate minerals clay minerals; however, reaction mechanism in vicinity of injection well, subject study, has not been clarified. As first laboratory test, Rishiri Island basalt was reacted distilled at 250 °C for 15 days four different concentrations investigate difference depending on concentration. Na, K Ca increased rapidly until 5 reaction, higher values concentrations; Mg showed characteristic behavior test without (using Ar gas). The saturation index each mineral calculated, it found were unsaturated smectite, supersaturated under all conditions, which agreement experimental results. It is concluded a small amount formed due low pH solution caused by high concentration, indicating dissolution main well.

Language: Английский

Research Progress on CO2 Geological Storage Reservoir and Caprock Mechanics: Methods and Status DOI

Shuaiyi Lu,

Pan Jiang,

Lianghan Cong

et al.

Greenhouse Gases Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

ABSTRACT Greenhouse gas (GHG) emissions have caused serious global climate change, and countries worldwide are taking steps to mitigate the greenhouse effect by carbon emissions. CO 2 geological storage (CGS) is emerging as a large‐scale technology for reducing GHG gradually becoming one of most important means mitigating effect. There several problems in implementation this technology, among which geomechanical injection sequestration cannot be ignored. This article reviews impacts hazards CGS, can lead risks, including changes reservoir caprock mechanical properties, stability, closure, fault activation, induced seismicity during sequestration. above studies summarizes research methods CGS generation mechanisms, help comprehensively understand risks faced process provide references guidance operation, monitoring, future.

Language: Английский

Citations

2
Numerical Simulation of Thermo-Hydro-Mechanical Coupling in the Drilling Process of Diamond-Impregnated Bits and Optimization of Waterway Design DOI Creative Commons
Guoliang Tian, Baolin Liu, Zhenhua Shang

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

In deep and ultradeep well drilling operations, the coolant flow of drill bit directly impacts life efficiency. To improve service impregnated diamond bits reduce abnormal wear, this study employs numerical simulations process, incorporating thermal-fluid-mechanical coupling, to analyze field, pressure, temperature distribution on lip body. By optimizing design bit's waterway using different materials, influence offset angle efficiency cooling performance is validated through field tests. Simulation test results reveal that, during drilling, pressure are primarily concentrated along spout wall in direction. Adjusting reduces lateral within increases overwater area, thereby enhancing coolant's powder-carrying capacity, improving efficiency, effectively preventing overheating. A 10° waterway, opposite direction, longest life, while a direction leads shortest life.

Language: Английский

Citations

0
Research Progress and Technical Challenges of Geothermal Energy Development from Hot Dry Rock: A Review DOI Creative Commons
Yilong Yuan, X. Zhang, Han Yu

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(7), P. 1742 - 1742

Published: March 31, 2025

The reserves of hot dry rock (HDR) geothermal resources are huge. main method used to develop HDR is called an enhanced system (EGS), and this generally uses hydraulic fracturing. After nearly 50 years research development, more countries have joined the ranks engaged in exploration development world. This paper summarizes base technologies, key game-changing technologies promote commercialization resources. According present situation exploration, utilization at home abroad, evaluation site selection, efficient low-cost drilling, defined as technologies. Key include high-resolution characterization HDR, complex fracture network reservoir creation, effective microseismic control, connectivity, characterization. Game-changing downhole liquid explosion in-situ heat transfer power generation, use CO2 other working fluids for high-efficient generation. Most already industrial applications, but future efforts must focus on reducing costs. majority still demonstration validation phase not yet been applied scale. However, breakthroughs cost reduction application effectiveness urgently needed these remain laboratory stage, any area could significantly advance In addition, we conducted a comparative analysis respective advantages China United States some development. On basis, summarized challenges identified throughout discussion highlighted most pressing priorities. We hope can guide new countries, helping establish batch exploitation areas. look forward fostering collaboration between through technical comparisons, jointly promoting commercial

Language: Английский

Citations

0
Basalt Mineralization with Soda Saline Soil for Enhanced CO₂ Sequestration: An Experimental Study DOI

Lianghan Cong,

Ziwang Yu,

Jianguo Kang

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116564 - 116564

Published: April 1, 2025

Language: Английский

Citations

0
CO2 Geothermal Power Generation: Laboratory Experiment on the Interaction Between Carbonated Water and Rishiri Island Basalt in the Vicinity of Injection Wells DOI Creative Commons
Shosuke Satake, Heejun Yang,

Koji Mori

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(9), P. 2251 - 2251

Published: April 28, 2025

Novel geothermal power generation systems are being developed that use supercritical CO2 as the heat transfer medium. In this technology, some injected into underground reacts with surrounding water and rocks to form secondary minerals, such carbonate minerals clay minerals; however, reaction mechanism in vicinity of injection well, subject study, has not been clarified. As first laboratory test, Rishiri Island basalt was reacted distilled at 250 °C for 15 days four different concentrations investigate difference depending on concentration. Na, K Ca increased rapidly until 5 reaction, higher values concentrations; Mg showed characteristic behavior test without (using Ar gas). The saturation index each mineral calculated, it found were unsaturated smectite, supersaturated under all conditions, which agreement experimental results. It is concluded a small amount formed due low pH solution caused by high concentration, indicating dissolution main well.

Language: Английский

Citations

0