Hydrothermal Reservoirs

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Hydrothermal Reservoirs

Hydrothermal Reservoir:
Hydrothermal Reservoirs are underground zones of porous rock containing hot water and steam, and can be naturally occurring or human-made.
Other definitions:Wikipedia Reegle

Natural, shallow hydrothermal reservoirs
naturally occurring hot water reservoirs, typically found at depths of less than 5 km below the Earth's surface where there is heat, water and a permeable material (permeability in rock formations results from fractures, joints, pores, etc.). Often, hydrothermal reservoirs have an overlying layer that bounds the reservoir and also serves as a thermal insulator, allowing greater heat retention. If hydrothermal reservoirs contain sufficient fluids (water or steam) at high temperatures and pressures, those fluids can be produced through wells to generate electricity or, for process heat[1].
Human-engineered hydrothermal reservoirs
typically created in conjunction with Enhanced Geothermal Systems (EGS).
Liquid-dominated hydrothermal reservoir


  1.  "US DOE EERE Geothermal Technologies Program, Geothermal Basics"