A system and method for coordinating the thermal displacement development of heavy oil in deep rock formations with green electricity supply

Abstract

This invention discloses a system and method for coordinating green electricity supply with thermal displacement development of heavy oil in deep rock formations. It mainly includes components such as a mesh pipe rack, casters, jet nozzles, sheet mirrors, curved photovoltaic panels, a heat exchange layer, an electric heater, a steam stabilizer, and a heavy oil thermal recovery wellbore. The aim is to utilize solar energy resources to provide a large amount of steam in heavy oil mining areas, which is then injected in situ to heat the oil layers in deep rock formations, reducing their viscosity and improving heavy oil recovery. Simultaneously, it can provide sufficient green electricity to oil and gas fields, increasing the proportion of clean energy and reducing carbon emissions. This invention is designed with full consideration of the objective attributes of oilfields—vast land, sparse population, and abundant solar energy resources—and can simultaneously produce electricity and a large amount of downhole steam. It has advantages such as high integration, strong modular adaptability, and wide applicability.

Description

Technical Field

[0001] This invention belongs to the field of new energy and oil and gas field development, specifically relating to a system and method for coordinating green electricity supply with thermal displacement development of heavy oil in deep rock formations. Background Technology

[0002] The main challenge in extracting heavy oil lies in its extremely high viscosity; typically, a viscosity exceeding 100 mPa·s affects its fluidity underground. By precise definition, heavy oil can be classified into ordinary heavy oil, extra-heavy oil, and super-heavy oil, using 10,000 mPa·s and 50,000 mPa·s as dividing points. Furthermore, for on-site development and construction of heavy oil fields, deeper formations present significant challenges to crude oil extraction. This is primarily due to the lack of clear information about the distribution of rock layers and oil reservoirs at greater depths. Additionally, the high-temperature and high-pressure environment at deeper levels poses significant challenges to drilling tools, gas-liquid-solid multiphase flow, and oil and gas transportation. Therefore, efficiently reducing the high viscosity of heavy oil in the rock formations is crucial. A common existing technology involves directly heating water with an electric boiler or using natural gas to generate steam, which is then transported underground without damage. The steam diffuses and heats the crude oil underground, thereby reducing its viscosity and improving its fluidity. However, in actual mining operations, it was found that the required oil-gas ratio needs to be higher than 0.2 to achieve a certain drag reduction effect, which requires the consumption of a large amount of electricity or fossil fuels such as natural gas, resulting in very high mining costs. Summary of the Invention

[0003] The purpose of this invention is to provide a system and method for synergistic green electricity supply in the thermal displacement development of heavy oil in deep rock formations. This system aims to provide a large amount of steam to the oil-bearing layers in deep rock formations during oil and gas field development. The steam is injected in situ and heated to reduce viscosity and improve heavy oil recovery. Simultaneously, it can provide green electricity to the oil and gas field, increasing the proportion of clean energy and reducing carbon emissions. This invention also provides design solutions for related technical personnel and researchers, facilitating their exploration of the synergistic laws governing the internal solar energy cascade conversion and utilization, as well as system structure optimization methods for coupling heavy oil displacement efficiency improvement and quality enhancement.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A deep rock formation heavy oil thermal displacement development and coordinated green power supply system includes a solar cascade conversion module and an auxiliary system module;

[0006] The solar cascade conversion module includes a square base, support rods mounted on the square base, and casters mounted on the support rods. A mesh frame is connected to the casters. Symmetrically placed jet nozzles are arranged in the transverse direction of the mesh frame, and concentrator support rods are arranged in the longitudinal direction. A photosensitive probe is located at the top of the mesh frame. Each solar cascade conversion module has four concentrator support rods, and mirror trays are arranged symmetrically in pairs on the concentrator support rods. Layered mirrors are placed above the mirror trays, with each mirror tray corresponding to three layered mirrors. The layered mirrors are used to reflect and focus solar light onto the surface of the curved photovoltaic. A heat-conducting layer and a heat exchange layer are arranged behind the curved photovoltaic. The heat-conducting layer transfers the heat energy carried by unused near-infrared and infrared photons in the curved photovoltaic to the heat exchange layer.

[0007] The auxiliary system module includes a heat exchange subsystem, a cleaning subsystem, a green electronics system, and a heat absorption subsystem;

[0008] The heat exchange subsystem is used to fully absorb the remaining photon heat energy that the curved photovoltaic system failed to absorb and convert, thereby improving the overall utilization efficiency of the solar spectrum; the cleaning subsystem is used to remove dust deposited on the surface of the curved photovoltaic system due to wind and sand in a timely manner; the green electronics system is used to absorb part of the ultraviolet light and most of the visible light photon energy in the solar spectrum and convert it into electrical energy for storage; the heat absorption subsystem is used to preheat the low-temperature water carried by the heat exchange subsystem, thereby increasing the output of water vapor at the downstream end and reducing the workload of the heat exchange subsystem.

[0009] A further improvement of this invention is that the heat exchange subsystem includes a heat transfer fluid storage tank and a circulation pump located downstream of the heat transfer fluid storage tank. The heat transfer fluid is pumped by the circulation pump to the heat exchange layer for heat exchange. The symmetrical heat exchange layers are connected in series through pipelines and then connected to a convection heat exchanger. The downstream end of the convection heat exchanger is connected to the heat transfer fluid storage tank, forming a circulation loop for the heat transfer fluid. The cleaning subsystem is used to remove dust deposited on the curved photovoltaic surface due to wind and sand. It includes a water storage tank and a timed power pump located downstream of the water storage tank. The timed power pump is directly connected to the mesh tube frame and sprays the dust onto the curved photovoltaic surface through jet nozzles to remove residual dust. Green electricity The subsystem includes a curved photovoltaic system, a transformer system located downstream of the curved photovoltaic system, and an energy storage system located downstream of the transformer system. The heat absorption subsystem is used to preheat low-temperature water to obtain steam for heating and displacing heavy oil by utilizing the waste heat from the full spectrum of solar radiation that is not utilized by the curved photovoltaic system. It includes a water storage tank, a constant flow pump located downstream of the water storage tank, the constant flow pump being directly connected to a convection heat exchanger, an electric heating furnace located downstream of the convection heat exchanger, a steam flow stabilizer located downstream of the electric heating furnace, a high-precision gas flow meter located downstream of the steam flow stabilizer, a temperature controller located downstream of the high-precision gas flow meter, and the temperature controller being directly connected to the heavy oil thermal recovery wellbore, which is fixed in the rock formation.

[0010] A further improvement of the present invention is that the mesh tube frame is designed as a hollow tube, with the interior providing a flow channel for clean water.

[0011] A further improvement of this invention is that the heat transfer fluid storage tank stores fluid with a mass fraction of 0.5%. wt The system contains % metallic copper nanofluids with copper particles ranging in size from 50nm to 100nm; symmetrical sheet mirrors are used to reflect solar energy onto the curved photovoltaic surface for power generation; the equivalent concentration ratio of the focused solar energy is between 5 and 10.

[0012] A further improvement of this invention is that the mesh tube frame serves two purposes: firstly, it provides support and fixation, and secondly, it sprays water from the water storage tank onto the surface of the curved photovoltaic through jet nozzles installed on the mesh tube frame, removing dust that accumulates on the photovoltaic surface during continuous operation. The mesh tube frame as a whole adjusts its orientation based on the orientation sensing characteristics of the photosensitive probe, driven by the omnidirectional wheels, so that solar radiation photons are focused onto the curved photovoltaic surface by the focusing effect of the layered mirrors.

[0013] A further improvement of the present invention is that the thermally conductive layer is made of aluminum oxide and is fixed with thermally conductive adhesive when it comes into contact with the back of the curved photovoltaic. The thermally conductive fluid carries away the heat from the back of the curved photovoltaic through the heat exchange layer and is transferred to the room temperature water medium delivered by the constant flow pump through the heat exchange action of the convection heat exchanger.

[0014] A further improvement of the present invention is that the electrical energy generated by the curved photovoltaic is converted into energy within a set current and voltage range by the inverter function of the transformer system and stored in the energy storage system; the energy of the energy storage system can be directly applied to the site in the form of electrical energy, or used for the electrical energy consumed in the electric heating furnace.

[0015] A further improvement of the present invention is that room temperature water, after being preheated by a convection heat exchanger, is heated by an electric heating furnace to generate sufficient steam.

[0016] A further improvement of this invention is that the curved photovoltaic uses monocrystalline silicon or polycrystalline silicon material; the timed power pump can customize the required jet cleaning time of the curved photovoltaic according to user needs; the steam flow rate is accurately monitored by a high-precision gas flow meter, and the temperature near the wellhead in the pipeline is measured by a temperature controller; during the heavy oil extraction process, the heated heavy oil in the rock formation is extracted to the surface through the heavy oil thermal recovery wellbore.

[0017] A method for coordinating the thermal displacement development of heavy oil in deep rock formations with green electricity supply includes:

[0018] When the system starts operating, solar energy in the mining area is focused by the layered mirrors and reflected onto the surface of the curved photovoltaic (PV) system. The orientation of the mirror trays is adjusted according to local latitude and longitude and seasonal changes to control the focusing orientation of the layered mirrors. Since the solar spectrum ranges from 250nm to 2500nm, only a portion of the photons can be absorbed and converted into electrical energy by the curved PV system; the remaining photons are expressed as heat. The electrical energy generated by the curved PV system is further stored through a green electronics system, and the heat is transferred to the heat exchange layer via a heat-conducting layer. The heat-conducting fluid in the heat exchange subsystem enters the heat exchange layer and promptly removes the heat from the heat exchange layer. Water in the cleaning subsystem is delivered to the mesh tube frame, and the water in the pipes is sprayed onto the surface of the curved PV system through jet nozzles to remove dust or impurities that remain on the surface during continuous operation at night or during the day. For changes in the solar radiation angle throughout the day, the casters adjust the tilt angle of the entire mesh tube frame in real time based on the changes in the test values ​​of the photosensitive probes.

[0019] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0020] 1. This invention can simultaneously provide green electricity and a continuous and stable water vapor input to oil and gas field development sites, reducing the viscosity of heavy oil in ultra-deep rock formations, improving its fluidity, and increasing the recovery rate of heavy oil extraction. At the same time, the entire operation requires almost no external energy supply; the system modules can achieve energy self-sufficiency, improving the overall energy utilization efficiency, and the entire process has virtually no carbon emissions.

[0021] 2. The system modules are rationally integrated and functionally complementary, allowing for process control based on feedback from the actual steam state characteristics of the oil and gas field. While utilizing photovoltaic power generation, waste heat loss is reduced. Waste heat is used to preheat hot water for steam, and a series-connected electric heater design enhances steam concentration and stability, ensuring effective viscosity reduction in the final steam heating stage.

[0022] 3. This technology can make full use of the objective geographical attributes of oil and gas fields with vast land and sparse population, and scale up the solar cascade conversion module in this system, greatly increasing the dispatchability of renewable energy and the flexibility of on-site active operation. The electrical energy output by the system and the recovery efficiency of heavy oil thermal recovery can develop in parallel and synergistically, greatly reducing the cost of the technology. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the integration process of the system of the present invention;

[0025] Figure 2 This is a schematic diagram of the partial component layout of the solar energy cascade conversion module in the system of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1 is a square base, 2 is a support rod, 3 is a caster wheel, 4 is a mesh tube rack, 5 is a jet nozzle, 6 is a condenser lens support rod, 7 is a mirror tray, 8 is a layered mirror, 9 is a curved photovoltaic panel, 10 is a heat-conducting layer, 11 is a heat exchange layer, 12 is a photosensitive probe, 13 is a heat-conducting fluid storage tank, 14 is a circulating pump, 15 is a transformer system, 16 is an energy storage system, 17 is a convection heat exchanger, 18 is a water storage tank, 19 is a timed power pump, 20 is a constant flow pump, 21 is an electric heating furnace, 22 is a rock formation, 23 is a heavy oil thermal recovery wellbore, 24 is a steam stabilizer, 25 is a high-precision gas flow meter, and 26 is a temperature controller. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0035] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0036] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1 and Figure 2 As shown, this invention provides a deep-stratum heavy oil thermal displacement development and coordinated green electricity supply system, which mainly consists of two parts: a solar cascade conversion module and an auxiliary system module. The solar cascade conversion module includes a square base 1, a support rod 2 positioned above the square base 1, casters 3 mounted on the support rod 2, and a mesh tube frame 4 connected to the casters 3. The mesh tube frame 4 is a hollow tube design, providing a flow channel for clean water. Symmetrically placed jet nozzles 5 are arranged in the transverse direction of the mesh tube frame 4, and concentrator support rods 6 are arranged in the longitudinal direction of the mesh tube frame 4. A photosensitive probe 12 is mounted on the top of the mesh tube frame 4. Each solar cascade conversion module has four concentrator support rods 6, and mirror trays 7 are arranged symmetrically in pairs on the concentrator support rods 6. Layered mirrors 8 are arranged above the mirror trays 7, with each mirror tray 7 corresponding to three layered mirrors 8. The sheet mirrors 8 placed on the two symmetrical mirror trays 7 can reflect and focus solar light onto the surface of the curved photovoltaic 9. A heat-conducting layer 10 and a heat exchange layer 11 are arranged behind the curved photovoltaic 9. The main function of the heat-conducting layer 10 is to transfer the heat energy carried by the unused near-infrared and infrared photons in the curved photovoltaic 9 to the heat exchange layer 11, so as to realize the synergistic utilization of solar energy.

[0039] The auxiliary system module includes a heat exchange subsystem, a cleaning subsystem, a green electronics system, and a heat absorption subsystem. The heat exchange subsystem is used to fully absorb the remaining photon heat energy that the curved photovoltaic 9 fails to absorb and convert, improving the overall utilization efficiency of the solar spectrum. It can also remove excess heat from the green electronics system in a timely manner, improving the safety and efficiency of the green electronics system. The cleaning subsystem is used to remove dust deposited on the surface of the curved photovoltaic 9 due to wind and sand, preventing dust and other contaminants from blocking the photon radiation path and reducing the power output performance of the curved photovoltaic 9. This ensures the stable operation of the green electronics system. The green electronics system absorbs some ultraviolet light and most visible light photon energy from the solar spectrum and converts it into electrical energy, storing it in the energy storage system 16. The heat absorption subsystem uses the heat carried by the heat exchange subsystem to preheat the low-temperature water, increasing the output of downstream steam and reducing the workload of the electric heating furnace 21, thus achieving energy savings.

[0040] Specifically, the heat exchange subsystem includes a heat transfer fluid storage tank 13 and a circulation pump 14 located downstream of the heat transfer fluid storage tank 13. The heat transfer fluid is pumped by the circulation pump 14 to the heat exchange layer 11 for heat exchange. The symmetrical heat exchange layers 11 are connected in series through pipelines and then connected to the convection heat exchanger 17. The downstream end of the convection heat exchanger 17 is connected to the heat transfer fluid storage tank 13, forming a circulation loop for the heat transfer fluid. The cleaning subsystem is for timely removal of dust deposited on the surface of the curved photovoltaic 9 due to wind and sand. It includes a water storage tank 18 and a timed power pump 19 located downstream of the water storage tank 18. The timed power pump 19 is directly connected to the mesh tube frame 4 and sprays the dust onto the surface of the curved photovoltaic 9 through jet nozzles 5 to remove residual dust and ensure the photovoltaic conversion efficiency. The green electronics system includes the curved photovoltaic 9, a transformer system 15 located downstream of the curved photovoltaic 9, and an energy storage system 16 located downstream of the transformer system 15. The purpose of the heat absorption subsystem is to utilize the waste heat from the full spectrum of solar radiation that is not utilized by the curved photovoltaic panel 9 to preheat low-temperature water, thereby generating steam to heat and displace heavy oil. It mainly includes a water storage tank 18, a constant flow pump 20 downstream of the water storage tank 18, which is directly connected to a convection heat exchanger 17. Downstream of the convection heat exchanger 17 is an electric heater 21, downstream of the electric heater 21 is a steam stabilizer 24, downstream of the steam stabilizer 24 is a high-precision gas flow meter 25, and downstream of the high-precision gas flow meter 25 is a temperature controller 26, which is directly connected to the heavy oil thermal recovery wellbore 23, which is fixed within the rock formation 22. The heated steam is injected into the rock formation through the heavy oil thermal recovery wellbore 23 to directly heat the heavy oil, reducing its viscosity and improving its fluidity within the rock formation.

[0041] In this embodiment, the heat transfer fluid storage tank 13 stores fluid with a mass fraction of 0.5%. wtThe fluid is composed of copper nanofluids with a particle size ranging from 50nm to 100nm. A circulating pump 14 controls the flow rate, volume, and cycle time of the heat-conducting fluid. Symmetrical layered mirrors 8 reflect solar energy onto the surface of the curved photovoltaic panel 9 for power generation, achieving an equivalent concentration ratio of 5-10 for the focused solar energy.

[0042] In this embodiment, the solar cascade conversion module can be added in a modular form to construct a distributed conversion system. The mesh frame 4 serves two purposes: firstly, it provides support and fixation; secondly, it sprays water from the water storage tank 18 onto the surface of the curved photovoltaic 9 through jet nozzles 5 installed on the mesh frame 4, promptly removing dust accumulated on the photovoltaic surface during continuous operation. The mesh frame 4 can be adjusted in orientation based on the orientation sensing characteristics of the photosensitive probe 12, driven by the casters 3, so that solar radiation photons are focused onto the surface of the curved photovoltaic 9 by the layered mirrors 8.

[0043] In this embodiment, the thermally conductive layer 10 is made of alumina and is fixed with thermally conductive adhesive when in contact with the back of the curved photovoltaic 9. The thermally conductive fluid carries away the heat from the back of the curved photovoltaic 9 through the heat exchange layer 11 and is transferred to the room-temperature water medium delivered by the constant flow pump 20 through the heat exchange action of the convection heat exchanger 17.

[0044] In this embodiment, the electrical energy generated by the curved photovoltaic 9 is converted into energy within a set current and voltage range by the inverter function of the transformer system 15 and stored in the energy storage system 16. The energy of the energy storage system 16 can be directly applied to the site in the form of electrical energy, or it can be used for the electrical energy consumed in the electric heating furnace 21.

[0045] In this embodiment, the room temperature water preheated by the convection heat exchanger 17 can be heated by the electric heater 21 to generate sufficient steam. The heating load of the electric heater 21 can be set according to the actual steam demand on site. A steam flow stabilizer 24 is installed in the steam transmission pipeline to ensure that the steam undergoes as little phase change as possible during the transmission process, thereby reducing steam loss and ensuring the steam consumption at the application end.

[0046] In this embodiment, the curved photovoltaic 9 can be made of monocrystalline silicon or polycrystalline silicon. The timed power pump 19 can be customized according to user needs to determine the required jet cleaning time for the curved photovoltaic 9. The steam flow rate is accurately monitored by a high-precision gas flow meter 25, and the temperature near the wellhead in the pipeline is measured by a temperature controller 26. During heavy oil extraction, the heated heavy oil in the rock formation 22 is extracted to the surface through the heavy oil thermal recovery wellbore 23.

[0047] Example 2

[0048] like Figure 1 and Figure 2 As shown, this invention provides a method for synergistic green energy supply in the thermal displacement development of heavy oil in deep rock formations. The method includes: before the actual heavy oil thermal recovery process begins, a 0.5 wt% copper nanofluid is prepared, wherein the copper particle size range is controlled between 50 nm and 100 nm. The prepared nanofluid is then added to a thermally conductive fluid storage tank 13. Simultaneously, a certain amount of room-temperature water is added to a water storage tank 18. When the system starts operating, solar energy in the mining area is focused by the layered mirror 8 and reflected onto the surface of the curved photovoltaic 9. The orientation of the mirror tray 7 can be adjusted according to local latitude and longitude and seasonal changes to control the focusing orientation of the layered mirror 8. Since the solar spectrum ranges from 250 nm to 2500 nm, only a portion of the photons can be absorbed and converted by the curved photovoltaic 9 to generate electricity; the remaining photons are manifested as heat. The electrical energy generated by the curved photovoltaic 9 is further converted into electrical energy within a set current and voltage range by the inverter function of the transformer system 15 and stored in the energy storage system 16. The heat in the storage system is transferred to the heat exchange layer 11 through the heat-conducting layer 10. The heat-conducting fluid in the heat-conducting fluid storage tank 13 is pumped into the heat exchange layer by the circulation pump 14. Due to the high thermal conductivity of the nanofluid, it can carry away the heat in the heat exchange layer 11 and transfer it to the convection heat exchanger 17 in a timely manner. The water in the water storage tank 18 can be pumped to the mesh tube frame 4 by the timed power pump 19. The mesh tube frame 4 has a hollow internal structure. Furthermore, the water in the pipeline is sprayed onto the surface of the curved photovoltaic 9 by the jet nozzle 5 to remove dust or impurities that remain on the surface during continuous operation at night or during the day. In addition, for changes in the solar radiation angle throughout the day, the omnidirectional wheel 3 can adjust the tilt angle of the entire mesh tube frame 4 in real time according to the changes in the test value of the photosensitive probe 12. Another pipeline connected to the water storage tank 18 is pumped by the constant flow pump 20 to the convection heat exchanger 17, where it absorbs heat from the aforementioned stream and preheats itself. Further, it is processed by the electric heater 21 under specified operating conditions to generate sufficient steam. Simultaneously, long-distance steam transport is completed under the action of the steam stabilizer 24. The temperature controller 26 can monitor the state and temperature of the steam in the pipeline in real time, and the high-precision gas flow meter 25 can specifically record the flow rate and velocity of the steam at the wellhead. The steam enters the rock formation through the heavy oil thermal recovery wellbore 23 fixed in the rock formation 22, where it interacts with the underground heavy oil to heat it, reduce its viscosity, increase its fluidity, and ultimately improve extraction efficiency. The electrical energy in the energy storage system 16 can be directly supplied to the mine or partially used for the electrical energy required by the electric heater 21. Furthermore, the aforementioned solar cascade conversion modules can be arranged in an array, with multiple modules connected in series and parallel for simultaneous use, thereby increasing the overall power and steam output of the system. This can be adjusted according to the actual energy demand on site.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A system for coordinating deep-seated heavy oil thermal displacement development with green electricity supply, characterized in that, Includes solar cascade conversion modules and auxiliary system modules; The solar cascade conversion module includes a square base (1), a support rod (2) set above the square base (1), and casters (3) set on the support rod (2). A mesh tube frame (4) is connected to the casters (3). Symmetrically placed jet nozzles (5) are arranged in the transverse direction of the mesh tube frame (4), and a concentrator support rod (6) is arranged in the longitudinal direction of the mesh tube frame (4). A photosensitive probe (12) is set on the top of the mesh tube frame (4). Each solar cascade conversion module is equipped with four concentrator support rods (6). Two mirror trays (7) are placed symmetrically on each other on the condenser support rod (6). A sheet mirror (8) is placed above the mirror tray (7). Each mirror tray (7) corresponds to three sheet mirrors (8). The sheet mirrors (8) are used to reflect and focus solar light onto the surface of the curved photovoltaic (9). A heat-conducting layer (10) and a heat exchange layer (11) are provided behind the curved photovoltaic (9). The heat-conducting layer (10) is used to transfer the heat energy carried by the unused near-infrared and infrared photons in the curved photovoltaic (9) to the heat exchange layer (11). The auxiliary system module includes a heat exchange subsystem, a cleaning subsystem, a green electronics system, and a heat absorption subsystem; The heat exchange subsystem is used to fully absorb the remaining photon heat energy that the curved photovoltaic (9) failed to absorb and convert, thereby improving the overall utilization efficiency of the solar energy spectrum; the cleaning subsystem is used to remove dust deposited on the surface of the curved photovoltaic (9) due to wind and sand in a timely manner; the green electronics system is used to absorb part of the ultraviolet light and most of the visible light photon energy in the solar energy spectrum and convert it into electrical energy for storage; the heat absorption subsystem is used to preheat the low-temperature water with the heat carried by the heat exchange subsystem, thereby increasing the output of water vapor at the downstream end and reducing the workload of the heat exchange subsystem. The heat exchange subsystem includes a heat transfer fluid storage tank (13) and a circulation pump (14) located downstream of the heat transfer fluid storage tank (13). The heat transfer fluid is pumped by the circulation pump (14) to the heat exchange layer (11) for heat exchange. The left and right symmetrical heat exchange layers (11) are connected in series through pipelines and then connected to the convection heat exchanger (17). The downstream end of the convection heat exchanger (17) is connected to the heat transfer fluid storage tank (13) to form a circulation loop of the heat transfer fluid. The cleaning subsystem is used to remove dust deposited on the surface of the curved photovoltaic (9) due to wind and sand. It includes a water storage tank (18) and a timed power pump (19) located downstream of the water storage tank (18). The timed power pump (19) is directly connected to the mesh tube rack (4) and sprays the dust onto the surface of the curved photovoltaic (9) through the jet nozzle (5) to remove the residual dust. The green electronics system includes a curved photovoltaic (9) and is located downstream of the curved photovoltaic (9). A transformer system (15) is located downstream of the surface photovoltaic (9), and an energy storage system (16) is located downstream of the transformer system (15). The heat absorption subsystem is used to preheat low-temperature water to obtain steam for heating and displacing heavy oil by utilizing the waste heat in the full spectrum of solar radiation that is not utilized by the surface photovoltaic (9). It includes a water storage tank (18), a constant flow pump (20) is located downstream of the water storage tank (18), the constant flow pump (20) is directly connected to the convection heat exchanger (17), an electric heating furnace (21) is located downstream of the convection heat exchanger (17), a steam flow stabilizer (24) is located downstream of the electric heating furnace (21), a high-precision gas flow meter (25) is located downstream of the steam flow stabilizer (24), a temperature controller (26) is located downstream of the high-precision gas flow meter (25), and the temperature controller (26) is directly connected to the heavy oil thermal recovery wellbore (23). The heavy oil thermal recovery wellbore (23) is fixed in the rock formation (22).

2. The deep rock formation heavy oil thermal displacement development and coordinated green power supply system according to claim 1, characterized in that, The mesh tube rack (4) is designed with hollow tubes, and the interior provides a flow channel for clean water.

3. The deep rock formation heavy oil thermal displacement development and coordinated green power supply system according to claim 1, characterized in that, The heat transfer fluid storage tank (13) stores fluid with a mass fraction of 0.5%. wt % metallic copper nanofluid, with copper particles ranging from 50nm to 100nm in size; symmetrical sheet mirrors (8) are used to reflect solar energy onto the surface of curved photovoltaic (9) for power generation, and the equivalent concentration ratio of focused solar energy is between 5 and 10.

4. A deep-stratum heavy oil thermal displacement development and coordinated green power supply system according to claim 1, characterized in that, The mesh tube frame (4) serves two purposes: firstly, it provides support and fixation; secondly, it sprays water from the water storage tank (18) onto the surface of the curved photovoltaic (9) through the jet nozzles (5) set on the mesh tube frame (4), removing the dust that accumulates on the photovoltaic surface during continuous operation. The mesh tube frame (4) adjusts its orientation based on the orientation sensing characteristics of the photosensitive probe (12) and is driven by the casters (3), so that the solar radiation photons are focused onto the surface of the curved photovoltaic (9) through the focusing effect of the layered mirrors (8).

5. A deep-stratum heavy oil thermal displacement development and coordinated green power supply system according to claim 1, characterized in that, The thermally conductive layer (10) is made of aluminum oxide and is fixed with thermally conductive adhesive when it comes into contact with the back of the curved photovoltaic (9). The thermally conductive fluid carries away the heat from the back of the curved photovoltaic (9) through the heat exchange layer (11) and is transferred to the room temperature water medium delivered by the constant flow pump (20) through the heat exchange action of the convection heat exchanger (17).

6. A deep-stratum heavy oil thermal displacement development and coordinated green power supply system according to claim 1, characterized in that, The electrical energy generated by the curved photovoltaic (9) is converted into energy within a set current and voltage range by the inverter function of the transformer system (15) and stored in the energy storage system (16); The energy of the energy storage system (16) can be directly applied to the site in the form of electrical energy, or used for the electrical energy consumed in the electric heating furnace (21).

7. A deep-stratum heavy oil thermal displacement development and coordinated green power supply system according to claim 1, characterized in that, After being preheated by the convection heat exchanger (17), the room temperature water is heated by the electric heating furnace (21) to produce sufficient steam.

8. A deep-stratum heavy oil thermal displacement development and coordinated green power supply system according to claim 1, characterized in that, The curved photovoltaic (9) uses monocrystalline silicon or polycrystalline silicon material; the timed power pump (19) can customize the time required for jet cleaning of the curved photovoltaic (9) according to user needs; the steam flow rate is accurately monitored by a high-precision gas flow meter (25), and the temperature near the wellhead of the pipeline is measured by a temperature controller (26); during the heavy oil extraction process, the heated heavy oil in the rock formation (22) is extracted to the surface through the heavy oil thermal recovery wellbore (23).

9. A method for coordinating the thermal displacement development of heavy oil in deep rock formations with green electricity supply, characterized in that, This method is based on a deep rock formation heavy oil thermal displacement development and coordinated green power supply system according to any one of claims 1 to 8, comprising: When the system starts running, solar energy in the mining area is focused by the layered mirror (8) and reflected onto the surface of the curved photovoltaic (9). The orientation of the mirror tray (7) is adjusted according to the local latitude and longitude and seasonal changes to control the focusing orientation of the layered mirror (8). Since the solar spectrum ranges from 250nm to 2500nm, only a portion of the photons can be absorbed and converted by the curved photovoltaic (9) to generate electricity. The remaining photons are expressed as heat. The electricity generated by the curved photovoltaic (9) is further stored through the green electronics system, and the heat is transferred through the heat-conducting layer (1). 0) Transferred to the heat exchange layer (11); The heat-conducting fluid in the heat exchange subsystem enters the heat exchange layer and carries away the heat in the heat exchange layer (11) in a timely manner; The water in the cleaning subsystem is transported to the mesh tube frame (4) on one hand, and the water in the pipeline is sprayed onto the curved photovoltaic (9) surface by the jet nozzle (5) to remove the dust or impurities that remain on the surface during nighttime or daytime continuous operation; For the change of the solar radiation angle throughout the day, the universal wheel (3) adjusts the tilt angle of the entire mesh tube frame (4) in real time according to the change of the test value of the photosensitive probe (12).

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