Results 71 to 80 of about 10,792,069 (285)

Laboratory-scale study of fluid-rock interaction in the enhanced geothermal systems in Cooper Basin, South Australia

, 2010
A study of fluid-rock interaction is essential to determine the chemical changes and mineral alteration in Enhanced geothermal system. Preliminary mineralogical investigation and geothermal experiments have been performed to investigate the hydrothermal ...
Kuncoro, G., Ngothai, Y., Yanagisawa, N., Brugger, J., Pring, A., O'Neill, B.   +5 more
core  

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

An innovative stimulation technology for permeability enhancement in enhanced geothermal system - Fully coupled thermo-poroelastic numerical approach

, 2012
This paper presents a new technique for stimulation of enhanced geothermal systems utilising roughness induced opening of fractures in the presence of compressive and shear stresses as well as fluid pressure inside the fracture.
Doonechaly, N., Rahman, S., Kotooussov, A.   +2 more
core  

Hazard limits of a fire or leak involving pentane tanks at the PGV powerplant

1 map : grayscale1 of 6 maps in the Puna Geothermal map setScale 1:12,000The maps shows the Kilauea East Rift ...
Puna Geothermal Venture
core   +3 more sources

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Hydraulic stimulation of tight geothermal reservoirs

, 2023
To extend geothermal-energy power generation from hydrothermal systems to places without anomalies in the geothermal gradient, fractures of low-permeability rock- typically at 4-6 km depth to find
Tangirala, Sri Kalyan, Parisio, Francesco, Vilarrasa, Víctor   +2 more
core   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Modelled ambient hydrogen sulfide concentration isopleths from hypothetical worst case well blowout from Wellpad E during meteorological conditions which produce the maximum concentration

1 map : grayscale1 of 6 maps in the Puna Geothermal map setScale 1:12,000The maps shows the Kilauea East Rift ...
Puna Geothermal Venture
core   +3 more sources

Hybrid Frictional Behavior of Hydrothermally‐Altered Fault Zones in Long‐Lived Polyphase Geothermal Reservoirs

Geophysical Research Letters
Geothermal reservoirs commonly record seismic and creep events, constituting earthquake hazards in enhanced geothermal systems. To understand the geological controls on mixed‐mode frictional behaviors in these settings, we performed friction experiments ...
Jacob Tielke, Alessandro Verdecchia, Chelsea L. Pederson, Abhishek Prakash, Christine McCarthy, Folarin Kolawole, Rebecca M. Harrington   +6 more
doaj   +1 more source

Fluid‐induced slip on a rate‐and‐state fault during co‐ and post‐injection: The interplay of fluid pressure diffusion and poroelastic stress

Deep Underground Science and Engineering, EarlyView.
Fault slip can occur ahead of the injection pressure front due to poroelastic stress. Our model captures the interaction of pressure, stress, and friction, providing new insights into injection‐induced seismicity and post‐injection fault slip. Shut‐in operations can either mitigate or accelerate seismic events depending on fault conditions and ...
Qifeng Xie, Lei Wang, Qi Li
wiley   +1 more source