50results about "Geothermal prediction/simulation" patented technology

The invention relates to the technical field of multi-source data fusion and grid modeling, and discloses a shallow geothermal energy development modeling method, system and equipment based on multi-source data fusion. The method comprises the following steps: performing joint interpolation on shallow geothermal data, engineering geological data and hydrogeological data to generate a virtual drill hole; constructing a ground temperature grid model according to shallow geothermal data, virtual drilling and anisotropic interpolation constraints; performing step-by-step color setting and rendering on the shallow geothermal attribute grade of the geothermal grid model to obtain a visual geothermal grid model; and generating a stepped temperature distribution profile map and a temperature contour line according to the ground temperature grid model so as to display stepped features of temperature distribution. According to the method, the high-precision and high-reliability ground temperature grid model is constructed through multi-source data fusion, virtual drilling generation and anisotropic modeling technologies, and the model not only can generate a stepped temperature distribution profile map and a temperature contour line, but also can improve the geological parameter inversion precision and the thermal reservoir prediction reliability.

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.

Methods, systems, and computer readable storage mediums for managing completion of a well for geothermal energy extraction is disclosed. The method may include obtaining a plurality of measurements of a geological formation in which a wellbore of the well is positioned. The method may also include, for each measurement of the plurality of measurements, obtaining a fluid flow analysis result for the geological formation to obtain fluid flow analysis results for the geological formation. The method may further include defining at least one zone along the wellbore based on the fluid flow analysis results. The method may also include ranking the at least one zone based on the fluid flow analysis results and a ranking system to obtain at least one ranked zone. The method may additionally include obtaining a formation model for the geological formation using the at least one ranked zone a thermal properties of the geological formation.

Methods for geothermal well planning and development are provided. This includes: installing fiber optic cables that extend within a plurality of shallow wells, wherein the fiber optic cables support both DTS measurements and DAS measurements; connecting DTS interrogators to the fiber optic cables and configuring the DTS interrogators to measure temperature profiles in the plurality of shallow wells over time; determining planned location of one or more geothermal wells that access a geothermal reservoir from the measured temperature profiles; selecting at least one shallow well to be used for DAS measurements; at each selected shallow well, disconnecting the DTS interrogator from the fiber optic cable at the shallow well and connecting a DAS interrogator to the fiber optic cable at the shallow well; and configuring the DAS interrogator at each selected shallow well to measure an acoustic profile in the selected shallow well over time.

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.

The invention discloses an installation control method, system and equipment of a geothermal loop, a medium and a program, and belongs to the technical field of geothermal installation. The method comprises the steps that thermal load demand prediction is carried out based on building feature information and environment feature information of a heat supply building, and the maximum thermal load demand is obtained; constructing a heat exchange predictor according to the collected soil characteristic information of the geothermal area; by means of a heat exchange predictor, loop layout scheme optimization is carried out with the purpose of meeting the maximum heat load requirement, and an optimal loop layout scheme is obtained; and according to the optimal loop layout scheme, an installation control scheme of the geothermal loop is formulated. According to the method, the heat load is accurately predicted according to the building and environment characteristics, the loop layout scheme is optimized in combination with the soil characteristics, and the heat supply efficiency of the geothermal system is improved.

The invention relates to a method for sizing a geothermal well for the thermal regulation of a building, including the steps of: —51: Modelling a geothermal potential of a zone of interest including a subsoil zone comprised within a given perimeter around the building; —S2: Estimating the thermal requirements of the building; —S3: Generating models of geothermal installations according to the results of 51 and S2, a model of a geothermal installation including one or more geothermal solutions configured to meet the requirements estimated in step S2 according to the zone of interest modelled in step 51; —S4: Applying a selection criterion which is configured to determine a preferred model.

The invention belongs to the technical field of geothermal resource monitoring, and discloses a system for observing the recharge rate of a geothermal well, which comprises a main control unit and a data acquisition module, a man-machine interaction module and a communication module which are connected with the main control unit. The data acquisition module synchronously acquires flow, temperature and pressure data of the mining well and the recharge well. The main control unit firstly analyzes pressure-flow velocity long-time covariance, temperature-flow velocity medium-time response and flow velocity instantaneous stability to comprehensively calculate a reliability index of flow data; and physical rule verification is executed, and when the monitored value is inconsistent with the trend reflected by the pressure and the temperature, the equipment fault is judged. Calculating a stage recharge rate based on high-reliability data, if the stage recharge rate does not reach the standard, carrying out intelligent diagnosis, and if the data reliability is low or equipment failure exists, giving an alarm to indicate that the measurement is abnormal; if the data are reliable, an alarm is given to indicate suspected illegal mining or blockage of the recharge well. According to the invention, the data credibility and the supervision accuracy are improved, and the intelligent positioning of the abnormal source is realized.

Disclosed herein are system, apparatus, article of manufacture, method and / or computer program product embodiments, and / or combinations and sub-combinations thereof, for using a thin-bed hot sedimentary aquifer (HSA) in geothermal energy generation applications. An example embodiment operates by pumping, via an extraction well, heated water from an extraction depth of an HSA. The HSA is identified based on a permeability satisfying a threshold permeability range and could even have a thickness equal to or less than about 100 meters. The example embodiment further operates by extracting, via a power generation unit, heat from the heated water to generate power and transform the heated water into cooled water. Subsequently, the example embodiment operates by injecting, via an injection well, the cooled water at an injection depth of the HSA. A first portion of the extraction well and a second portion of the injection well are disposed within the HSA.

A method of operating a thermal system includes receiving a data center heat with a downhole fluid, the data center heat generated by at least one heat generating electronic component of a data center. The method also includes exchanging heat between a facility and the downhole fluid via a ground-source heat pump (GSHP) to fulfill at least a portion of a thermal load of the facility. The method further includes maintaining a thermal balance of the downhole fluid with a borehole heat exchanger (BHE) implemented in a borefield.

Methods, systems, and compositions of matter for increasing heat transfer are disclosed herein. A slurry may include a quantity of a thermally conductive material configured to transfer heat. A slurry may include a quantity of a proppant configured to prop open one or more fractures. A slurry may include a quantity of a slurrying agent configured to suspend the quantity of the thermally conductive material within the quantity of the slurrying agent. The slurry is configured to preserve permeability within one or more fractures and facilitate a transfer of heat.

The invention relates to a method of designing an enhanced geothermal system and characterising at least one fracture in an enhanced geothermal system. The enhanced geothermal system comprises at least one well combination of at least one injector well and at least one production well. The method comprises forming at least one stage fracture from at least one well of the well combination according to a fracture treatment design and injecting at least one tracer into the at least one stage fracture. The method comprising circulating fluid from at least a first well to at least a second well of well combination via the at least one stage fracture; wherein the circulated fluid carries at least one circulation tracer and collecting samples of fluid from at least one well and analysing tracer concentrations with respect to sampling time. The method comprises calculating at least one fracture characteristic from the analysis of the tracer concentrations.

A process and / or simulation for providing one or more technical specifications of characteristics of a geothermal energy extraction apparatus for use with a well formed in the ground, the process comprising the steps of identifying one or more physical characteristics of the said well, modelling a plurality of output criteria according to a plurality of possible characteristics of a geothermal energy extraction apparatus and the said one or more physical characteristics of the said well, providing one or more technical specifications of characteristics of a geothermal energy extraction apparatus for use with said well.

The invention provides a solar middle-deep layer ground source heat pump flexible heat supply system and a design calculation method. The system comprises a solar heat collector, a middle-deep layer sleeve type buried pipe heat exchanger, a heat pump unit and a heat exchanger. The solar heat collector is connected with the heat exchanger; the heat exchanger is connected with the middle-deep layer sleeve type buried pipe heat exchanger and a user side through a three-way adjusting valve group; the middle-deep layer sleeve type ground heat exchanger is connected with the heat pump unit through the valve group, and the heat pump unit is connected with the user side through the valve group; the solar heat collector collects low-grade heat energy, and part of the low-grade heat energy is stored underground through the middle-deep layer sleeve type buried pipe heat exchanger and used for flexible regression of an underground temperature field deviating from an initial value under the influence of heat extraction. The ground source heat pump unit converts low-grade heat energy into high-grade heat energy. The invention further provides a design calculation method based on the system. On the basis of the heat transfer model, the quantitative regulation operation method of the heat supply system is provided to guide flexible and efficient operation of the composite system.

A geothermal management system may receive time-series data (607) for operation of the geothermal energy system (100). A geothermal management system may calibrate a physical model using the time-series data (607). A geothermal management system may apply the physical model to a pre-determined comparison parameter to generate a performance indicator. A geothermal management system may identify an operating status of the geothermal energy system based on the performance indicator.

A system and method for improved geothermal heat collection enhancement is presented, where a well includes a closed-loop geothermal heat collection system that is thermally coupled to a hot, dry rock formation via a thermal arrival enhancement structure that extends from the well into the formation and is filled with a thermally conductive filler. Preferred configuration and / or operating parameters are determined by a model that calculates heat flow in a three-dimensional system taking into account time variations and the effects of the inherent thermal conductivity of the rock that is enhanced by the thermal arrival.

A thermal system (100) includes a borehole heat exchanger (112), a facility (122) having a peak heating load, a data center (114) including at least one heat generating electronic component, and a ground-source heat pump (116). The data center (114), the borehole heat exchanger (112), and the ground-source heat pump (116) are connected in a dynamic downhole fluid circuit (110) with a flow of a downhole fluid. The dynamic downhole fluid circuit (110) is configured to reject heat from the data center (114) to the facility (122) and to the borehole heat exchanger (112), and a power capacity of the data center (114) is less than the peak heating load of the facility (122).

A method of designing an enhanced geothermal system and characterising at least one fracture in an enhanced geothermal system. The enhanced geothermal system comprises at least one well combination of

A method of managing a well system includes: obtaining, by a digital twin manager and based on a predetermined monitoring criterion, dynamics behavior data of the well system, where the dynamics behavior data includes a plurality of measurements including an incomplete measurement that is missing data for a time interval and a complete measurement that includes data for the time interval; obtaining modeled dynamics behavior data for the well system using a physics-based model; training a physics constrained machine learning model using one or more machine learning algorithms based on the dynamics behavior data and the modeled dynamics behavior data as inputs; updating dynamics behavior data based on the physics-based model and the physics constrained machine learning model; outputting updated dynamics behavior data for the well system. The updated dynamics behavior data completes the missing data in the incomplete measurement for the time interval.

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.

Disclosed herein are system, apparatus, article of manufacture, method and / or computer program product embodiments, and / or combinations and sub-combinations thereof, for using a hot sedimentary aquifer (HSA) in geothermal energy generation applications. An example embodiment operates by pumping, via multiple extraction wells, heated water from one or more extraction depths of an HSA. The HSA is identified based on a permeability satisfying a threshold permeability range. The example embodiment further operates by extracting, via a power generation unit, heat from the heated water to generate power and transform the heated water into cooled water. Subsequently, the example embodiment operates by injecting, via multiple injection wells, the cooled water at one or more injection depths of the HSA.

A geothermal plant (1600, 1700, 1800, 2000), for extracting energy from a geothermal reservoir (1230) located below the ocean bottom, includes a floating platform (1202); a riser (1240) that extends from a well (1208) drilled into the geothermal reservoir (1230), to the floating platform (1202); an electrical pump (1260) having a mechanical actuation part (1264) located in a bore of the riser (1240), and an electronic part (1266) located outside the riser, wherein the electrical pump (1260) is configured to pump a geothermal liquid (1226) from the geothermal reservoir (1230) to the floating platform (1202); and a power plant (1210) located on the floating platform (1202) and configured to use a steam (1222) produced by the geothermal liquid (1226) to generate electrical power. The electrical pump (1260) is placed at a depth of the riser (1240) where the geothermal liquid (1226) is in a single-phase.

The invention relates to the technical field of geothermal well sand production identification, and discloses an intelligent identification method and system for a geothermal well sand production position. The method comprises the steps that acoustic logging, resistivity and gamma ray data of a geothermal well are collected, and an original data set is formed; multi-dimensional feature extraction is carried out on the Gamma ray abnormal features, and a feature parameter set composed of the interval transit time, the resistivity gradient and the Gamma ray abnormal features is obtained; a dynamic stratum model is constructed based on the set, and the stratum characteristics of different underground depth intervals are represented; comparing the model with a preset standard stratum characteristic library, and identifying a target depth interval with significant difference; in combination with historical sand production records, the stratum parameter change trend is analyzed to determine a potential sand production layer; calculating a stratum stability index to generate a sand production risk grade, and correcting the risk grade in combination with underground real-time monitoring data; and finally, an identification report containing the stratum characteristic description and the sand production risk distribution of the target depth interval is generated, and targeted sand production prevention and treatment suggestions are output.

Methods, systems, and devices for quantifying geothermal heat flux using shallow subsurface temperature measurements are provided. A method can include deploying vertical temperature probes with fiber optic sensors, strain sensors, and advective sensors at measurement sites. Time-series temperature data is then recorded, processed to determine equilibrium temperature profiles, and corrected for climate-driven signals, strain, and advection effects. Geothermal heat flux is calculated by combining the corrected temperature gradient with subsurface thermal conductivity, and a heat flux map can be generated to identify geothermal energy resources.

The invention relates to the technical field of geothermal energy utilization, and discloses a medium-deep geothermal well heat exchange system and method utilizing supercritical carbon dioxide. The density active regulation and control module comprises a micro pressurization injection unit, a thermoelectric refrigeration fine adjustment unit and a micro pressure relief buffer unit; and the intelligent control module is used for controlling the density active regulation and control module so as to regulate the natural circulation flow of the supercritical carbon dioxide in the closed circulation loop. The intelligent control module is arranged to predict the future trend of the natural circulation driving force of the system according to the real-time operation parameters, an instruction can be sent to the density active regulation and control module in advance based on the measurement result, and feedforward intervention is carried out before the system deviates from the optimal working point; therefore, the inherent time lag and overshoot problems in traditional feedback control are effectively inhibited, and the operation stability and the heat extraction efficiency of the whole heat exchange system are improved.

Methods for geothermal well planning and development are provided. This includes: installing fiber optic cables that extend within a plurality of shallow wells, wherein the fiber optic cables support both DTS measurements and DAS measurements; connecting DTS interrogators to the fiber optic cables and configuring the DTS interrogators to measure temperature profiles in the plurality of shallow wells over time; determining planned location of one or more geothermal wells that access a geothermal reservoir from the measured temperature profiles; selecting at least one shallow well to be used for DAS measurements; at each selected shallow well, disconnecting the DTS interrogator from the fiber optic cable at the shallow well and connecting a DAS interrogator to the fiber optic cable at the shallow well; and configuring the DAS interrogator at each selected shallow well to measure an acoustic profile in the selected shallow well over time.

A method includes causing a first portion of a heat-transfer working fluid to flow from a first lateral wellbore of a closed-loop geothermal well to a second lateral wellbore of the closed-loop geothermal well via a wellbore intersection. The first lateral wellbore and the second lateral wellbore reside in a target subterranean zone. A second portion of the heat-transfer working fluid is caused to flow through the Earth of the target subterranean zone from the first lateral wellbore to the second lateral wellbore.

A thermal system includes a borehole heat exchanger, a facility, a data center including at least one heat generating electronic component, and a ground-source heat pump. A dynamic downhole fluid circuit connects the data center, the borehole heat exchanger, and the ground-source heat pump with a flow of a downhole fluid and is configured to connect the data center, the borehole heat exchanger, and the ground-source heat pump in a plurality of different configurations to reject heat from the data center. The thermal system further includes a facility fluid circuit for connecting the facility and the ground-source heat pump with a facility fluid, wherein the ground-source heat pump thermally connects the dynamic downhole fluid circuit and the facility fluid circuit.