A geo-energy production system and method is disclosed for extracting thermal energy from a reservoir formation, and for storing at least one of thermal waste heat or excess heat in a storage zone of the reservoir formation. The system may at least one compressed fluid injection well in communication with the storage zone for injecting an unheated, compressed working fluid into the storage zone. The system may also have at least one fluid injection well in communication with the storage zone for injecting a working fluid laden with thermal waste heat or excess heat, into the storage zone, the storage zone being located below a caprock layer of the reservoir formation and above a zone of native brine within the reservoir formation. The storage zone is at least partially circumscribed by a hot brine storage zone of the reservoir formation. The compressed working fluid further assists with a withdrawal of pressurized brine residing below and/or to the sides of the storage zone. At least one compressed CO.sub.2, N.sub.2, or air energy storage production well is used, which is in communication with the storage zone for removing compressed working fluid from the storage zone for use in power production.

A process for producing power including injecting a first heat transfer fluid through an injection well to a geothermally-heated formation that contains a second heat transfer fluid. The first heat transfer fluid may then be heated via indirect heat exchange in an interwell run fluidly connected to the injection well and disposed within the geothermally-heated formation. The heated first heat transfer fluid may then be recovered through a production well fluidly connected to the interwell run. Thermal energy contained in the recovered heated first heat transfer fluid may then be converted in a power production unit fluidly connected to the injection well and the production well. The interwell run, in some embodiments, may include multiple heat exchange tubes disposed within a perforated casing or drill pipe.

The boiling-water geothermal heat exchanger 1 is provided with a water injection pipe 2 which is installed underground and to which water is supplied from the ground and a steam extraction pipe 3 which is installed underground so as to be in contact with the water injection pipe 2 and has a plurality of ejection ports 5, in which a pressure inside the steam extraction pipe 3 is reduced to the vicinity of a pressure required by a turbine 6, high-pressure hot water which is produced by supplying heat from a geothermal region 4 to water inside the water injection pipe 2 is changed to a single-phase flow of steam inside the steam extraction pipe 3 present underground via the ejection ports 5, and the single-phase flow of steam is extracted on the ground. And in the boiling-water geothermal heat exchanger 1, a heat insulation portion is formed at a part which is in contact with a low-temperature region close to the ground surface, and the heat insulation portion is such that the level of water supplied to the water injection pipe 2 is lowered to form an air layer at an upper part of the water injection pipe 2.

A method and apparatus for efficiently extracting geothermal energy from a subterranean thermal reservoir through a wellbore where the heat exchange fluid is introduced at a slower velocity than the velocity at which the fluid is extracted. The method and apparatus further comprises a region void of cement between the outer wall of a casing and the inner wall of the wellbore, such that thermally conductive material can be injected therein.

Techniques, systems and material are disclosed for transport of energy and/or materials. In one aspect, a method includes generating gaseous fuel (e.g., from biomass dissociation) at a first location of a low elevation. The gaseous fuel can be self-transported in a pipeline to a second location at a higher elevation than the first location by traveling from the first location to the second location without adding energy of pressure. A liquid fuel can be generated at the second location of higher elevation by reacting the gaseous fuel with at least one of a carbon donor, a nitrogen donor, and an oxygen donor harvested from industrial waste. The liquid fuel can be delivered to a third location of a lower elevation than the second location while providing pressure or kinetic energy.

The present invention provides a method for operating a plurality of independent, closed cycle power plant modules each having a vaporizer comprising the steps of: serially supplying a medium or low temperature source fluid to each corresponding vaporizer of one or more first plant modules, respectively, to a secondary preheater of a first module, and to a vaporizer of a terminal module, whereby to produce heat depleted source fluid; providing a primary preheater for each vaporizer; and supplying said heat depleted source fluid to all of said primary preheaters in parallel.

A gravity power generation device comprises a geothermal well, a hollow heat conducting post, a power generating unit, a steam guiding unit, a condensing unit and a water distribution unit. By discharging and filling the water alternately and repetitively, a first tank and a second tank of the power generating unit can be continuously movable back and forth between a first and a second power generation positions so that a shaft of the power generating unit can continuously rotate to drive a generator of the power generating unit to generate electric power, thereby the heat energy of the geothermal steam can be converted into the potential energy of the water, and then be converted to electric energy so as to meet the demand for power generation by natural energy.

An apparatus for collecting solid materials from a fluid is provided. The apparatus includes a conduit configured to allow the fluid to flow therethrough. The apparatus further includes a mesh extending across the conduit. The mesh is configured to allow the fluid to flow therethrough and to allow a solid material to precipitate out of the fluid onto the mesh. The apparatus further includes a support structure configured to support the mesh in position across the conduit.

Tiered or stacked geothermal loop energy systems may include closed-loop pipe systems disposed within a heat producing geologic formation. The pipe systems are emplaced in wellbores drilled so as to efficiently and effectively take advantage of localized formation properties.

A system for geothermal process optimization can include a receiver configured to receive brine conditions sensed at a head of a production well of a geothermal power plant and a first circuit configured to determine an analyte value according to the sensed brine conditions. Also, the system can include a second circuit configured to determine a product dosage value for a product, according to the analyte value, product information, and historical power plant data. The product dosage value can be an amount of the product suggested to adequately prevent buildup, corrosion, or a combination thereof at a given part of the geothermal power plant, such as the production well.