615results about "Geothermal systems" patented technology

A coiled tubing system includes a coiled tubing string configured to couple to a downhole tool to move the downhole tool along a geothermal well, an injector head configured to control movement of the coiled tubing string and the downhole tool along the geothermal well, one or more sensors configured to capture sensor data indicative of a distance traveled by the coiled tubing string along the geothermal well, and a controller configured to control operation of the injector head to move the coiled tubing string and the downhole tool to a measured depth within the geothermal well that corresponds to an intersection of a feature with the geothermal well based on the sensor data received from the one or more sensors.

A geothermally powered petrochemical refining system includes a geothermal system with a wellbore extending from a surface into an underground magma reservoir. A geothermally powered fractional distillation system receives crude oil and produces distillates which are separated by molecular weight. The distillates may be provided to a geothermally powered cracking system that is heated by a heat transfer fluid heated by the geothermal system to crack heavy hydrocarbons into lighter ones. The distillates may be provided to a geothermally powered reforming system that is heated by a heat transfer fluid heated by the geothermal system to reform hydrocarbons into different structures.

Methods are provided for extracting thermal energy from a geothermal reservoir having at least one feature extending therethrough, which involve drilling or accessing a production well that intersects the at least one feature, wherein the at least one feature provides a flow path of pressurized geothermal fluid into the production well. Well log data can be analyzed to determine position of the at least one feature in the production well. One or more interventions, or combinations of interventions, can be performed to open the feature or otherwise enhance the flow rate of pressurized geothermal fluid carried by the feature into the production well. The intervention(s) can be performed on multiple features that connect to the production well. The method can also be applied to multiple production wells.

The present invention discloses a system and method for preventing and controlling frost heave damage in railway subgrades adapted to severe cold climates. This system belongs to the field of seasonal frozen soil engineering technology. The prevention and control system includes several ground-source heat pump devices consisting of heating units, heating pipes, heat collecting pipes, and a detection assembly. Several heating units are arranged at the foot of the subgrade slope along the length of the railway. The heating pipes are laid in the frost heave development layer of the subgrade, and the heat collecting pipes are installed in the stable layers of the foundation on both sides of the subgrade. A heat carrier circulates through the pipeline consisting of the heating pipes, heating units, and heat collecting pipes. Temperature sensors, pressure sensors, and displacement sensors are used to monitor the subgrade freezing temperature, heat carrier temperature, compressor intake and exhaust pressures, and track deformation, respectively. A control assembly receives signals from the detection assembly and controls the operating mode of the heating units. The present invention ensures rapid compressor superheat establishment during startup in severe cold environments and rationally controls the compressor exhaust temperature range and operating mode during normal operation.

The present disclosure is directed to a geothermal hydrogen production system, comprising; a primary liquid circuit circulating a liquid into a geothermal well and returning heated liquid from a well head of the geothermal well, the primary liquid circuit passing through a desalination plant; a first turbine driven by the heated liquid to produce a first mechanical output; and a second turbine driven by the heated liquid to produce a second mechanical output, wherein the first mechanical output drives an electrical generator, configured to power an electrolyser generating hydrogen via electrolysis of fresh water, and the second mechanical output drives an air compressor to provide at least one of a first, a second and a third compressed air supply, wherein the first compressed air supply drives a supply pump to supply salt water to the desalination plant, the second compressed air supply drives a start-up pump to initiate the primary liquid circuit, and the third compressed air supply drives a fresh water pump to deliver fresh water from the desalination plant to the electrolyser.

The invention discloses a railway roadbed frost heaving disease prevention and control system and method adapting to severe cold climate, and belongs to the technical field of seasonal frozen soil engineering.The prevention and control system comprises a plurality of ground source heat pump devices composed of heating units, heat supply pipes, heat collection pipes and detection assemblies, and the heating units are arranged at the slope toe position of a roadbed in the length direction of a railway; the heat supply pipe is laid on a frost heaving development layer of a roadbed, the heat collecting pipes are arranged on stable layers of the roadbed on the two sides of the roadbed, and the heat-carrying agent circularly flows in a pipeline composed of the heat supply pipe, the heating unit and the heat collecting pipes. A temperature sensor, a pressure sensor and a displacement sensor are used for monitoring the roadbed freezing temperature, the heat-carrying agent temperature, the suction and exhaust pressure of a compressor and the deformation amount of a track; and the control assembly receives a signal of the detection assembly and controls the operation mode of the heating unit. According to the method, rapid establishment of the superheat degree of the compressor in the starting stage in the severe cold environment and reasonable control over the exhaust temperature range and the operation mode of the compressor in the normal operation stage can be guaranteed.

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 present disclosure provides a non-condensable gas reduction system that reduces the effects of atmospheric components contained in gas that is reduced in the reduction well. [Solution] A non-condensable gas reduction system in a geothermal power plant returns non-condensable gas that remains uncondensed when cooled from a first gas contained in geothermal fluid that springs from a production well to a reinjection well. The non-condensable gas reduction system comprises: a pump that pressurizes the first liquid sent to the reinjection well; an ejector that is driven by the first liquid, attracts the non-condensable gas, and discharges a second liquid that is a mixture of the first liquid and the non-condensable gas; and a gas separator connected downstream of the ejector that separates the second gas containing atmospheric components that has been mixed into the second liquid, and discharges the second gas into the atmosphere while discharging the second liquid into the reinjection well.

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 present disclosure is directed to a geothermal desalination system, comprising; a primary liquid circuit circulating a liquid into a geothermal well and returning heated liquid from a well head of the geothermal well, the primary liquid circuit passing through a desalination plant; a first turbine driven by the heated liquid to produce a mechanical output; and an air compressor driven from the mechanical output to provide a first compressed air supply and a second compressed air supply, wherein the first compressed air supply drives a supply pump to supply salt water to the desalination plant, and the second compressed air supply drives a-start-up pump to initiate circulation in the primary liquid circuit.

The invention discloses an energy efficiency improving system for a shallow buried pipe heat exchanger. A closed or semi-closed heat storage area unit is arranged in a surrounding mode through area heat insulation plates. The heat storage area unit comprises a plurality of heat storage wells, a plurality of shallow water lifting wells, a plurality of deep water lifting wells, a plurality of solar water heaters, a heat storage water tank, a plurality of U-shaped vertical buried pipes and a ground source heat pump machine room; the buried depth of the regional heat insulation plate is arranged in soil of an earth crust constant temperature zone and penetrates through an earth crust daily variable temperature zone and an earth crust annual variable temperature zone from top to bottom, the buried depth H of the regional heat insulation plate is larger than or equal to H2 + 0.5-1 m, and H2 is the depth of the annual variable temperature zone; the heat storage well is of an inner and outer sleeve type hollow structure provided with a plurality of horizontal branch pipes shaped like a cross or a Chinese character'jing ', and the horizontal branch pipes are arranged in soil of a crustal annual variable temperature zone and a constant temperature zone. The buried depth H of the upper horizontal branch pipe is greater than or equal to H1 + 0.5-1m, and the buried depth H of the lower horizontal branch pipe is greater than or equal to H2 + 0.5-1m; h1 is the daily variable temperature zone depth, and H2 is the annual variable temperature zone depth.

Systems and methods for generating and a controller for controlling generation of geothermal power in an organic Rankine cycle (ORC) operation in the vicinity of a wellhead during hydrocarbon production to thereby supply electrical power to one or more of in-field operational equipment, a grid power structure, and an energy storage device. In an embodiment, during hydrocarbon production, a temperature of a flow of wellhead fluid from the wellhead or working fluid may be determined. If the temperature is above a vaporous phase change threshold of the working fluid, heat exchanger valves may be opened to divert flow of wellhead fluid to heat exchangers to facilitate heat transfer from the flow of wellhead fluid to working fluid through the heat exchangers, thereby to cause the working fluid to change from a liquid to vapor, the vapor to cause a generator to generate electrical power via rotation of an expander.

The invention discloses a cold, heat and electricity combined supply system device for hot dry rock. The system comprises a middle-deep layer geothermal heat exchanger, a geothermal source pressure pump, a steam turbine evaporator, an ORC and Kalina steam turbine power generation device, a hot water type absorption unit, a steam turbine condenser, a steam turbine liquid supply pump, a warming heat exchanger, a backheating heat exchanger, a living water heat exchanger, a heat supply pump, a cold circulating pump, a plurality of electric control reversing valves, a user side and a power distribution control device. The system extracts hot dry rock heat energy through the geothermal heat exchanger to drive the power generation device to generate power, and cold or heat is output through the absorption type unit. The warming heat exchanger and the backheating heat exchanger optimize a working medium circulation path, the electric control reversing valve dynamically switches a refrigeration mode, a heating mode and a power generation mode, and the domestic water heat exchanger independently supplies domestic hot water. Efficient combined supply of cold, heat and electricity of geothermal energy is achieved, the problem that the working medium circulation efficiency is low during multi-mode switching is solved, the energy utilization rate is remarkably increased, the operation cost is reduced, and energy conservation and environment protection are achieved.

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.

Energy storage, comprising a system for collecting and converting gravitational energy, is characterized in that the working space of a weight (3) is a tube (2), filled with a heat carrier and being a part of a structure of a borehole heat exchanger installed in a borehole (1).

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 system and method of using a subterranean energy storage system includes a geothermal reservoir with at least one fracture configured to hold a working fluid for a period of time. At least one wellbore is positioned within the geothermal reservoir fluidly coupled to the at least one fracture. At least one pump is configured to at least one of a) inject the working fluid into the at least one fracture and b) withdraw the working fluid from the at least one fracture. A power system is fluidly coupled to the wellbore, the power system configured to convert at least one of a) a thermal energy of the working fluid and b) a fluid dynamic energy of the working fluid into an electrical current. A downhole pressure of the working fluid held in the at least fracture for the period of time increases during the period time.

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.

The invention relates to a zero-carbon intelligent agricultural development and utilization system and method based on gradient utilization of energy. The system comprises a geothermal well selection and arrangement module, a geothermal water collection and pretreatment module, a heat exchange module, a gradient utilization system construction module, a hot water circulation and reuse module, a working condition flexible adjustment module, an intelligent regulation and control module, a hot spring utilization and recharge system and a system energy storage module. The problems of energy waste, high carbon emission and insufficient agricultural suitability in the traditional technology are solved, and low carbonization and high efficiency of agricultural production are realized.

Methods and systems for geothermal energy production wherein multiple horizontal or vertical wells may be used to pass fluids through the Earth from an injector well to a producer well through induced cracks, splits, fractures, conduits, or channels in the rock. Such methods and systems may include controlling tensile-split conduits in a subterranean geothermal formation by providing an injection well, providing a production well, configuring the injection well for injection of a tensile-splitting fluid into a production zone, configuring the production well to produce a heated fluid from the production zone, applying pressure to the production well, creating a plurality of tensile-split conduits, raising or lowering the pressure in the production well, establishing fluid communication between the injection well and the production well, and producing the heated fluid to the surface.

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.

A thermosiphon system (1) includes a geothermal well bore (2), a pipe (3) extending down the bore (2), and a heat exchanger (5) coupled to the lower end of the pipe (3) disposed in the geothermal well bore (2). The heat exchanger (5) includes one or more vanes (19) arranged to cause a working fluid in the form of supercritical carbon dioxide exiting the lower end of the pipe (3) to return up the geothermal well bore (2) via a helical path (22) between an outer radius of the pipe (3) and an interior radius of the geothermal well bore (2). The helical path (22) having a pitch length (P) and a total length (H) parallel to the geothermal well bore (2). The thermosiphon system (1) also includes a turbine (9) driven by the mass flow stream of the working fluid.

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.

The utility model discloses a geothermal energy comprehensive utilization system of a medium-deep geothermal well, which belongs to the technical field of geothermal energy and comprises a heat exchange system connected with the geothermal well. The power grid is connected with the heat exchange system; the air compressor is connected with the power grid; the power generation device is respectively connected with the air compressor and the power grid; the energy storage device is arranged in the geothermal well, and the energy storage device is connected with the air compressor and the power generation device; by means of the heat exchange system, geothermal energy can be supplied to users for heating in winter, when the geothermal well is idle in summer, the power generation efficiency can be improved through the auxiliary power generation device, and therefore heat energy waste caused by the fact that the geothermal well is idle in summer is avoided.

A groundwater heat exchanger includes a distributor, a collector, a plurality of heat exchange pipes, and a housing. The distributor includes a first interior chamber and a first port. The collector includes a second interior chamber and a second port. Each heat exchange pipe includes a first end attached to the distributor and a second end attached to the collector, and defines a fluid passageway between the first and second interior chambers. The housing surrounds the heat exchange pipes and defines a groundwater passageway along the heat exchange pipes that is configured to receive a groundwater flow. In one example, a loop fluid flow received at the first port flows into the first interior chamber, then flows from the first interior chamber to the second interior chamber through the plurality of heat exchange pipes, and flows from the second interior chamber out the second port.

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.