The present disclosure relates to techniques for extracting heat energy from geothermal briny fluid. A briny fluid can be extracted from a geothermal production well and delivered to a heat exchanger. The heat exchanger can receive the briny fluid and transfer heat energy from the briny fluid to a molten salt. The molten salt can be pumped to a molten salt storage tank that can serve as energy storage. The briny fluid can be returned to a geothermal source via the production well. The briny fluid can remain in a closed-loop system, apart from the molten salt, from extraction through return to the geothermal production well.

Methods and systems for producing thermal or electrical power from geothermal wells. Power is produced from a working fluid circulating in a closed loop within a geothermal well. Geothermal steam or brine at depth transfers heat at higher temperature than at the surface to the working fluid. The working fluid is then used to produce power directly or indirectly. The geothermal production fluid may be stimulated through use of gas lifting or submersible pumps to assist in bringing such fluids to the surface or through the use blockers to encourage the downhole steam advection and brine recirculation through the resource in a connective loop. The working fluid may be compatible with existing direct heat or power generation equipment; i.e., water for flash plants or hydrocarbons/refrigerants for binary plants.

The present disclosure relates to techniques for extracting heat energy from geothermal briny fluid. A briny fluid can be extracted from a geothermal production well and delivered to a heat exchanger. The heat exchanger can receive the briny fluid and transfer heat energy from the briny fluid to a molten salt. The molten salt can be pumped to a molten salt storage tank that can serve as energy storage. The briny fluid can be returned to a geothermal source via the production well. The briny fluid can remain in a closed-loop system, apart from the molten salt, from extraction through return to the geothermal production well.

The present disclosure relates to techniques for extracting heat energy from geothermal briny fluid. A briny fluid can be extracted from a geothermal production well and delivered to a heat exchanger. The heat exchanger can receive the briny fluid and transfer heat energy from the briny fluid to a molten salt. The molten salt can be pumped to a molten salt storage tank that can serve as energy storage. The briny fluid can be returned to a geothermal source via the production well. The briny fluid can remain in a closed-loop system, apart from the molten salt, from extraction through return to the geothermal production well.

A system and method of harvesting geothermal energy in a subterranean formation includes providing an injection wellbore that extends into the subterranean formation, positioning a plurality of selectively opening sleeves in the injection wellbore spaced apart the subterranean formation, providing at least one producing wellbore that extends into the subterranean formation in a predetermined location proximate to the injection wellbore, and fracturing the subterranean formation in a plurality of locations proximate to the plurality of selectively opening sleeves to enhance a fluid pathway between the injection wellbore and the at least one producing wellbore. Fluid is injected down the injection wellbore at a first temperature, and the fluid is produced from the at least one producing wellbore at a second temperature higher than said first temperature.

A process of generating electricity from a thermal energy source includes selecting a predetermined primary fluid having: a latent heat greater than a latent heat of water at a phase change from liquid to gas; and a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase; and selecting a predetermined secondary fluid having: a latent heat less than a latent heat of water at a phase change from liquid, to gas; and: a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase. The process includes the primary fluid absorbing thermal energy from the thermal energy source; exchanging the thermal energy of the primary fluid with the secondary fluid: driving a turbine via the secondary fluid; and driving an electricity generator by the turbine to generate electricity.

A process of generating electricity from a thermal energy source includes selecting a predetermined primary fluid having: a latent heat greater than a latent heat of water at a phase change from liquid to gas; and a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase; and selecting a predetermined secondary fluid having: a latent heat less than a latent heat of water at a phase change from liquid, to gas; and; a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase. The process includes the primary fluid absorbing thermal energy from the thermal energy source; exchanging the thermal energy of the primary fluid with the secondary fluid; driving a turbine via the secondary fluid; and driving an electricity generator by the turbine to generate electricity.

A process of generating electricity from a thermal energy source includes selecting a predetermined primary fluid having: a latent heat greater than a latent heat of water at a phase change from liquid to gas; and a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase; and selecting a predetermined secondary fluid having: a latent heat less than a latent heat of water at a phase change from liquid, to gas; and; a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase. The process includes the primary fluid absorbing thermal energy from the thermal energy source; exchanging the thermal energy of the primary fluid with the secondary fluid; driving a turbine via the secondary fluid; and driving an electricity generator by the turbine to generate electricity.

A process of generating electricity from a thermal energy source includes selecting a predetermined primary fluid having: a latent heat greater than a latent heat of water at a phase change from liquid to gas; and a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase; and selecting a predetermined secondary fluid having: a latent heat less than a latent heat of water at a phase change from liquid, to gas; and; a specific heat capacity less than a specific heat capacity of water in a liquid phase and in a gas phase. The process includes the primary fluid absorbing thermal energy from the thermal energy source; exchanging the thermal energy of the primary fluid with the secondary fluid; driving a turbine via the secondary fluid; and driving an electricity generator by the turbine to generate electricity.