406results about "Geothermal systems" patented technology

Methods and systems are provided for extracting thermal energy from a geothermal reservoir. One aspect involves drilling at least one sidetrack that extends from a primary wellbore and intersects at least one fracture target in the geothermal reservoir. The at least one sidetrack can be configured to increase fluid flow into the primary wellbore from the at least one fracture target. The increase of fluid flow into the primary wellbore from the at least one fracture target as provided by the at least one sidetrack can increase the amount of captured heat from the geothermal reservoir.

The invention relates to a cluster well group efficient group mining method. The method comprises the steps that a stratum structure, heat reservoir distribution, ground temperature gradient, permeability and porosity of a target area are obtained; generating well group collaborative logic based on geological parameters and underground sensor data, wherein the well group collaborative logic comprises dynamic well spacing calculation, well group Voronoi clustering and grouping, a yield distribution relation and an interference suppression strategy; production optimization parameters are determined according to collaborative logic, temperature, pressure and flow data are collected in real time through a monitoring system, and production is dynamically adjusted in combination with a geological interference model (including a heat-flow coupling equation). Layered well spacing and selective perforation are implemented for multiple heat reservoirs, and parameters of each layer are independently set. Monitoring data interference is filtered through collaborative logic, when a single well fluctuates, the yield and the recharge amount of an adjacent well are automatically adjusted to keep the total capacity stable, a fault diagnosis model is updated based on real-time data, parameters are recursively optimized, and closed-loop control is formed.

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the energy storage system provides higher-temperature heat to a conventional lower-temperature heat source to boost the temperature of a thermal power cycle working fluid to a turbine, thereby increasing efficiency of the power cycle.

The invention relates to a double-source geothermal system with a shallow buried pipe and a middle-deep geothermal well coupled in series, which comprises an underground heat exchange unit, a ground heat pump unit and a user side, and the underground heat exchange unit, the ground heat pump unit and the user side are matched with one another to provide two operation modes, namely a winter heat supply mode and a summer refrigeration mode. The gradient utilization mode of shallow preheating and deep heating is utilized, the temperature of the source side of the heat pump is remarkably increased, the occupied area of the buried pipe is reduced, and the service life of the deep well is prolonged; in addition, switching between a heat supply mode and a refrigeration mode can be conducted in different seasons, heat compensation is conducted on the stratum through summer waste heat through the heat pump, and the stratum attenuation rate is effectively delayed.

In some implementations, a plurality of thermoelectric devices may be arranged to cool one or more components of a downhole drilling component during drilling operations. A current can be applied to one or more thermoelectric devices to generate a cooling effect. The thermoelectric devices can be located and arranged so that they cool some or all of a bottom hole assembly or components thereof, such as one or more sensors, batteries, processors, electrics, and the like. The thermoelectric devices also may be located and arranged to cool sensors, batteries, other downhole components, and / or drilling mud in a wellbore during drilling operations. A plurality of thermoelectric devices may be used to generate electric power downhole from a temperature difference. The electric power may be used to power sensors, processors, charge batteries, and be used by one or more downhole electric components, such as those in a bottom hold assembly. One or more thermal storage devices may be used with the thermoelectric devices to store thermal energy for use when needed. A control system may be used to control the activation and / or deactivation of one or more thermoelectric devices to provide cooling when desired.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

Various examples are provided related to airlift pumping of downhole geothermal fluids. In one example, an airlift system includes a compressor; a gas sparger head in a wellbore of a geothermal well, and a pressure head recycle assembly. The sparger head produces artificial lift of the geothermal fluids by injecting a gas resulting in a difference in density downhole. The entrained gas can be extracted by the pressure head recycle assembly, compressed, and reinjected downhole. The geothermal fluid at the well head can be used in direct use applications or in a thermodynamic cycle to make shaft power. The gas sparger head can include a venturi shaped passage extending through the gas sparger head and a bubble orifice including gas orifices radially spaced about a narrow portion of the venturi shaped passage. The gas orifices can have a corresponding resonant chamber through which the gas (e.g., air) is provided.

The subject matter of this specification can be embodied in, among other things, a subsea energy recovery system for generating electric power that includes an inlet flow line configured to couple to a subsea tree of a subsea gas well to receive gas produced from the subsea gas well, and a subsea electric power generation system, the subsea electric power generation system configured to reside subsea on a subsea production site of the subsea gas well and including a turbine wheel configured to rotate in response to expansion of the gas, a rotor configured to rotate with the turbine wheel, a stationary electric stator, the rotor and electric stator defining an electric generator configured to generate current, and a hermetically sealed housing enclosing the turbine wheel, the rotor, and the electric stator and hermetically sealed inline in the first flow line.

Systems and methods for generating hydrogen by electrolysis of water using electricity produced using a vortex generator that results in cavitation and implosion processes in a vortex. The vortex generator can produce conditions within the vortex generator that can allow deuterium molecules naturally occurring in water to acquire sufficient kinetic energy to overcome the Coulomb barrier so that their nuclei can get close enough to each other to undergo various nuclear reactions, discharging a large amount of nuclear energy at the microstate, imparting energy to the water, which can be used to drive a turbine to generate electricity, and the resulting electricity can be used at least in part for the electrolysis of water.

A method of improving heat recovery from a geothermal well includes receiving temperature distribution data from a distributed temperature sensing (DTS) system comprising a fiber optic cable disposed in a wellbore, which extends through a formation; analyzing the temperature distribution data to determine a fluid flow profile along the wellbore; determining, based on the fluid flow profile, a location of dominant flow rate; and injecting a sealing agent into the formation at the location. When the sealing agent cures, fractures within a fracture system are sealed in the formation at the location. The cured sealing agent prevents or mitigates fluid flow through the formation at the location.

A geothermal heat extractor includes a heat transfer fluid and a heat transfer fluid supply conduit. The heat transfer fluid is maintained in the supply conduit in a liquid state at a pressure above its saturation pressure. The geothermal heat extractor further includes a heat transfer fluid return conduit, a geothermal heat source coupled thereto, at least one flow control valve configured to control the flow of the heat transfer fluid from the supply conduit to the return conduit, and an external load coupled to the return conduit. As the heat transfer fluid is provided to the return conduit in the liquid state, the heat transfer fluid vaporizes in the return conduit by heat supplied to the return conduit from the geothermal heat source. The vaporized heat transfer fluid is supplied from the return conduit to the external load.

A geothermal system obtains heated heat transfer fluid via heat transfer with an underground reservoir of magma. The geothermal system includes a wellbore extending between a surface and into the underground reservoir of magma. A fluid pump provides a flow of heat transfer fluid toward the underground reservoir of magma. A fluid conduit extends from the surface toward a terminal end of the wellbore and allows flow of heated heat transfer fluid from a portion of the wellbore that extends into the underground reservoir of magma toward the surface.

The invention discloses a multi-energy complementary heat supply method and system combining terrestrial heat and thermoelectric decoupling, relates to the field of energy heat supply, and aims to solve the problems that a traditional heat supply system is high in fossil fuel dependence degree, insufficient in terrestrial heat and thermoelectric cooperation and low in operation benefit. The method comprises the following steps: acquiring terrestrial heat, system operation and external associated data, and generating a standardized state matrix through weighted normalization and feature fusion; lSTM time sequence features and real-time parameters are fused to construct a demand prediction model, and a geothermal flow deviation adaptive correction item is added; with minimum fossil fuel consumption, lowest cost and emission standard reaching as targets, scheduling parameters are output through a particle swarm algorithm in combination with constraint conditions; the parameters are converted into instructions, and when the deviation exceeds 3%, correction and feedback are carried out through PID and a cost sensitive formula; calculating index evaluation benefits; and dynamically adjusting the weights of the three types of data according to the index deviation degree. According to the invention, deep synergy of terrestrial heat and thermoelectricity is realized, fossil fuel consumption and cost are reduced, and dynamic adaptive capability is provided.

The invention relates to the technical field of geothermal energy utilization, and discloses a geological stratification-based deep and shallow coupling ground source heat pump system optimization design method, which comprises the following steps of S1, acquiring geological stratification information of a target site, and thermophysical parameters, hydraulic parameters and mechanical parameters of each stratification; s2, aiming at a deep heat exchanger element and a shallow heat exchanger element; s3, an operation weight vector is introduced and used for defining the dynamic distribution proportion of building loads borne by the deep heat exchange system and the shallow heat exchange system in the whole life cycle; s4, establishing an optimization model taking the minimization of the total cost of the whole life cycle as a target function; s5, solving the optimization model by adopting an optimization strategy to obtain an optimal solution; and S6, outputting an integrated optimization design scheme according to the optimal solution. The physical layout design and the dynamic operation strategy are subjected to integrated collaborative optimization, the stratum heat-water-force coupling effect is comprehensively considered, and the cost of the whole life cycle is minimized.

The invention discloses a solar energy and geothermal energy storage combined power generation system based on sCO2. The solar energy and geothermal energy storage combined power generation system comprises a solar heat collection unit, a geothermal energy injection and exploitation unit, a geothermal reservoir unit and an integrated power generation unit. The solar heat collection unit is used for collecting solar energy, heating sCO2 through the collected solar energy and outputting the heated sCO2. The geothermal energy injection and exploitation unit is used for transmitting the heated sCO2; the geothermal reservoir unit is used for storing the heated sCO2 transmitted by the geothermal energy injection and exploitation unit; and the integrated power generation unit is used for acquiring the sCO2 in the geothermal reservoir unit and performing power generation treatment through the acquired sCO2. The invention further discloses a solar energy and geothermal energy storage combined power generation method based on sCO2. The sCO2 is used as a circulating medium, so that the energy conversion efficiency of the whole power generation system is improved; and meanwhile, the problems of regional imbalance and insufficient intermittency existing in solar energy utilization are solved by selecting a mode of combining solar energy and geothermal energy.

A compressed gas energy storage system which can also store thermal energy. The storage system can have a surface subsystem, a geological heat storage subsystem, and a compressed gas storage subsystem. The surface subsystem can comprise gas compression, gas expansion, and heat exchange functions. The geological heat storage subsystem can comprise a cold and hot zone in fluid communication with the surface subsystem. The compressed gas storage subsystem can also be in fluid communication with the surface subsystem. The systems and methods can be implemented in porous rock formations. This allows for the use of extremely large, natural formations rather than man-made salt caverns, as is the current state of the art. Existing wells drilled by oil and gas producers can be utilized, thereby drastically reducing cost and time for implementation. Further, use of sub-surface thermal management provides a complete solution for long term energy storage at high efficiency.

Systems and techniques may be used for incorporating direct air carbon dioxide capture capabilities into a working fluid condensing process of a geothermal power plant. An example technique may include causing, using fans, air to flow across condenser coils of a condensing unit, through which power cycle working fluid is circulated, and through a direct air capture (DAC) filtration component, which separates carbon from the air, capturing heat from a geothermal working fluid, and using the heat as thermal energy input to the DAC filtration component or using electrical energy generated from the geothermal power plant as electrical energy input to power the condensing unit and the DAC filtration component. The example technique may include gathering the carbon separated from the air to be injected into a geothermal reservoir or repurposed for another industrial process.

A geothermal system exchanges heat between ground which receives geogenic heat 1 from below and a target 7, comprises a continuous loop of heat exchange tubing 3 placed in a region of the ground and s

The invention discloses a geothermal energy vertical heat conduction system and a control method, and relates to the technical field of geothermal application, and the geothermal energy vertical heat conduction system comprises a medium circulation loop which comprises a steam guide channel, an underground heat exchange assembly, a liquid injection channel and an overground heat exchange assembly which are sequentially connected in series and closed, and the medium circulation loop is filled with a heat exchange medium; the underground heat exchange assembly is used for exchanging heat with underground heat energy, and the overground heat exchange assembly is used for exchanging heat with an overground load module; the vacuum pump assembly communicates with the medium circulation loop and is used for forming negative pressure in the underground heat exchange assembly; according to the geothermal energy vertical heat conduction system and the control method, the pressure in the medium circulation loop and / or the underground heat exchange assembly is reduced through the vacuum pump assembly, then the boiling point of the heat exchange medium is reduced, the heat exchange medium is accelerated to be converted into the gas state from the liquid state, heat is carried to float to the ground surface through the steam guide channel, and the geothermal energy collection efficiency is improved.

A geothermally powered iron production subsystem includes using heat transfer fluid heated by a geothermal system with a wellbore extending from a surface into an underground magma reservoir. A hopper receives iron ore that is crushed and provided to a blast furnace, along with limestone and coke. The blast furnace is heated by a heat exchanger configured to receive the heat transfer fluid heated by the geothermal system to generate the heat provided to the blast furnace. One or more components of the iron production subsystem may also be powered by the heated heat transfer fluid.

The present disclosure relates to a geothermal carbon capture system, comprising; a primary liquid circuit circulating liquid into a geothermal well and returning heated liquid from a well head of the geothermal well, the primary liquid circuit passing through a condenser; a turbine driven by the heated liquid to power a compressor configured to draw in and compresses ambient air to feed a first compressed air supply and a second compressed air supply, wherein the first compressed air supply is directed to a separator to extract carbon dioxide therefrom; and the second compressed air supply drives a pump to force the carbon dioxide extracted from the separator towards a reinjection well for reinjection into geology surrounding the reinjection well.

The invention discloses an ORC power generation and three-mode heat storage system driven by hot dry rock terrestrial heat, and relates to the technical field of hot dry rock resource exploitation. The system comprises an organic Rankine cycle loop, a heat storage loop and a waste heat loop. The Rankine cycle loop comprises a generator, a turbo expander, a condenser and an evaporator, the turbo expander adopts a CO2 working medium as a circulating hot working medium, and the heat storage loop comprises a cold tank, a heat exchanger and a hot tank which are connected in sequence. According to the heat storage loop, the heat storage temperature range (150-300 DEG C) is highly matched with the temperature range (150-200 DEG C) of the hot dry rock, the performance of the organic Rankine cycle loop adopting the CO2 working medium is further improved compared with that of a traditional working medium, the waste heat loop is additionally arranged, waste heat of the condenser is used for heating low-temperature water generated by the heat exchanger through the waste heat loop, and the heat storage temperature range (150-300 DEG C) is greatly improved. The water temperature injected into the hot dry rock is increased, the energy utilization rate is increased, and the energy efficiency is improved.

The invention relates to the technical field of heat pumps, and discloses an air conditioning unit compound system and a control method, and the air conditioning unit compound system comprises an air conditioning circulation loop, a power generation circulation loop and a control system. The air conditioning unit compound system control method comprises the steps that a control system receives an operation mode instruction; the four-way reversing valve is switched to the corresponding position according to the operation mode instruction; an air conditioner circulation loop and a power generation circulation loop are started; according to the temperature data, the rotating speeds of the compressor and the working medium pump are adjusted through the control system, and the power generation power of the expansion machine is adjusted; and judging whether the power generation power of the power generation circulation loop is matched with the power consumption power of the air conditioner circulation loop or not, if yes, maintaining the current operation parameters, and if not, readjusting the operation parameters. The method has the effects of saving energy consumption and improving energy efficiency.

The invention discloses a renewable energy driven coupling heat and power cogeneration system and an operation method thereof. Geothermal water resources are utilized in a gradient mode according to a temperature interval, and hot water exploited from a geothermal well is filtered and then drives an organic Rankine cycle system to generate power; geothermal water subjected to heat exchange through the evaporator is used for resident heating, heating return water preheats an organic working medium through a preheater of the organic Rankine cycle system, and therefore the power generation efficiency of the system is improved. Geothermal water passes through the preheater and then enters a floor heating pipeline to be used for floor heating heat supply of residents. The maximum circulation heat efficiency and efficiency of the two organic Rankine cycles can be achieved through circulation organic working medium screening and operation parameter optimization; through combination of power generation and heating, the comprehensive utilization efficiency of system energy is improved; and meanwhile, in combination with heat using scenes such as a constant-temperature swimming pool and wetland restoration, waste heat resources of floor heating return water and hot water at an outlet of the condenser are recycled, and maximum waste heat recovery of the system is achieved.

The present application relates to a kind of method and system based on compressed air through stratum fracture energy storage, it includes the following steps: stratum fracture is constructed;The rock gap and / or microfracture around stratum fracture is blocked;Stratum fracture is judged closed;Compressed air is injected into target wellbore to store energy;Compressed air is discharged to release energy.It not only realizes the accumulation of air compression potential energy, but also can accumulate stress potential energy and rock deformation elastic potential energy, and obtain stratum thermal energy;Most importantly, the method is not restricted by geographical conditions, can carry out underground compressed air energy storage anywhere, greatly expand the application range of compressed air energy storage.

A conductor of the extendable conductor assembly may be extended (e.g., into a thermal target, such as a preexisting or a newly created feature of a planetary body) and used to thermally couple a rover, vehicle, fixed installation, or other hardware with the thermal target. Thus, the temperature of the hardware may be managed via heat transfer to / from the thermal target. For instance, heat may be transferred from the thermal target to maintain the temperature of the hardware under cold conditions, while excess heat may be transferred to the thermal target under hot conditions. A rover forms a borehole in the lunar surface, in which a conductor is extended to facilitate heat transfer between the rover and the Moon accordingly.

A method includes flowing, in a closed loop geothermal well residing in a target subterranean zone, a first heat transfer working fluid and flowing, in the geothermal well, a second working fluid from the surface inlet to the downhole location of the geothermal well. The second working fluid resides upstream of the first heat transfer working fluid. The second working fluid includes a fluid density greater than a fluid density of the first heat transfer working fluid. The method also includes circulating, in the geothermal well, the second working fluid pushing, with the second working fluid, the first heat transfer working fluid toward a surface outlet of the geothermal well. The method also includes collecting energy from the mobilized first heat transfer working fluid received at the surface outlet of the geothermal well.

Systems and techniques may be used for incorporating direct air carbon dioxide capture capabilities into a working fluid condensing process of a geothermal power plant. An example technique may include causing, using fans, air to flow across condenser coils of a condensing unit, through which power cycle working fluid is circulated, and through a direct air capture (DAC) filtration component, which separates carbon from the air, capturing heat from a geothermal working fluid, and using the heat as thermal energy input to the DAC filtration component or using electrical energy generated from the geothermal power plant as electrical energy input to power the condensing unit and the DAC filtration component. The example technique may include gathering the carbon separated from the air to be injected into a geothermal reservoir or repurposed for another industrial process.

The invention relates to a method and system for storing energy through stratum artificial fractures based on compressed air. The method comprises the steps that the stratum fractures are constructed; blocking rock gaps and / or microfractures around the stratum fractures; the sealing performance of the stratum fractures is judged; compressed air is injected into the target shaft for energy storage; compressed air is reversely discharged for releasing energy. Accumulation of air compression potential energy is achieved, stress potential energy and elastic potential energy of rock deformation can be accumulated, and stratum heat energy is obtained. Most importantly, the method is not restrained by geographical conditions, underground compressed air energy storage can be carried out at any place, and the application range of compressed air energy storage is greatly expanded.

A thermal system includes a borehole heat exchanger, a facility having a peak heating load, a data center including at least one heat generating electronic component, and a ground-source heat pump. The data center, the borehole heat exchanger, and the ground-source heat pump are connected in a dynamic downhole fluid circuit with a flow of a downhole fluid. The dynamic downhole fluid circuit is configured to reject heat from the data center to the facility and to the BHE, and a power capacity of the data center is less than the peak heating load of the facility.