Deep rock stratum thickened oil thermal displacement development and green power supply coordinated system and method

Abstract

The invention discloses a deep rock stratum thickened oil thermal displacement development and green power supply cooperation system and method, and the system mainly comprises a net-shaped pipe frame, universal wheels, a jet flow nozzle, a lamellar mirror surface, a curved surface photovoltaic device, a heat exchange layer, an electric heating furnace, a steam current stabilizer, a thickened oil thermal recovery shaft and other assemblies. The invention aims to provide a large amount of water vapor by using solar energy resources in a thickened oil recovery mining area, transfer the water vapor to an oil layer in a deep rock stratum in an in-situ steam injection manner and heat the oil layer, reduce the viscosity of the oil layer and improve the recovery rate of thickened oil. Meanwhile, sufficient green electricity can be provided for the oil-gas field, the clean energy ratio of the oil-gas field is increased, and carbon emission is reduced. The system is designed by fully considering the objective attributes of wide and rare areas and rich solar energy resources of oil fields and mining areas, can simultaneously generate electric energy and a large amount of underground steam, and has the advantages of high integration level, high modular adaptability, wide applicability and the like.

Description

Technical Field

[0001] The present invention belongs to the field of new energy and oil and gas field development, and specifically relates to a system and method for collaborative green electricity supply for thermal displacement development of heavy oil in deep rock formations. Background Art

[0002] The difficulty in the extraction of heavy oil lies mainly in its very high viscosity, that is, the viscosity of crude oil is high. Under normal circumstances, viscosity above 100 millipascals will affect its fluidity underground. From the precise definition, with 10,000 millipascals and 50,000 millipascals as the dividing points, heavy oil can be divided into ordinary heavy oil, extra heavy oil and super heavy oil. At the same time, for the development and construction of heavy oil on site, the deeper strata are also very difficult to extract crude oil, mainly because the distribution information of deeper rock and oil layers is unclear. In addition, the high temperature and high pressure environment accompanied by the deep bottom layer also poses a high challenge to the construction of well tools, gas-liquid-solid multiphase flow, oil and gas transportation, etc. In this case, how to efficiently reduce the high viscosity of heavy oil in the rock formation is very critical. In the existing technology, it is more common to directly generate steam through electric heating boilers or by burning natural gas to heat water, and then transport the generated steam to the underground without loss, and heat the underground crude oil through the diffusion of steam, thereby reducing its viscosity and improving fluidity. However, in the actual mining process, it was found that the required oil-gas ratio needs to be higher than about 0.2 to achieve a certain resistance reduction effect, which requires the consumption of a large amount of electricity or fossil energy such as natural gas, and the mining cost is very high. Summary of the invention

[0003] The purpose of the present invention is to provide a system and method for the coordinated green electricity supply for the thermal displacement development of heavy oil in deep rock formations, which is intended to provide a large amount of water vapor for the development process of rich heavy oil in deep rock formations during the development of oil and gas fields, and to provide it to the oil layer in the deep rock formation in the form of in-situ steam injection and heating, so as to reduce its viscosity and improve the recovery rate of heavy oil. At the same time, it can provide green electricity supply for oil and gas fields, increase the proportion of clean energy in oil and gas fields, and reduce carbon emissions. It can also provide device design solutions for technicians and researchers in related fields, so as to facilitate their exploration of the coordinated laws of internal solar energy cascade conversion and utilization and the system structure optimization method for coupling heavy oil displacement efficiency and quality improvement production.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: A deep rock formation heavy oil thermal displacement development collaborative green electricity supply system, including a solar energy cascade conversion module and an auxiliary system module; The solar energy cascade conversion module includes a square base, a support rod arranged above the square base and a universal wheel arranged on the support rod, a mesh pipe rack is connected to the universal wheel, symmetrically placed jet nozzles are arranged in the lateral direction of the mesh pipe rack, a concentrator support rod is arranged in the longitudinal direction of the mesh pipe rack, and a photosensitive probe is arranged on the top of the mesh pipe rack; each solar energy cascade conversion module is provided with four concentrator support rods, mirror trays arranged symmetrically in pairs on the concentrator support rods, and a layer mirror is arranged above the mirror tray, and each mirror tray corresponds to three layer mirrors, and the layer mirrors are used to reflect and focus solar energy onto the surface of the curved photovoltaic; a heat conduction layer and a heat exchange layer are arranged behind the curved photovoltaic, and the heat conduction layer is used to transfer the heat energy carried by the unused near-infrared and infrared light photons in the curved photovoltaic to the heat exchange layer; The auxiliary system module includes heat exchange subsystem, cleaning subsystem, green electronic system and heat absorption subsystem; The heat exchange subsystem is used to fully absorb the remaining photon thermal energy that the curved photovoltaic system fails to absorb and convert for utilization, thereby improving the overall utilization efficiency of the solar energy spectrum; the cleaning subsystem is used to promptly remove dust deposited on the surface of the curved photovoltaic system due to wind and sand; the green electronic 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 them 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 production of water vapor at the back end and reducing the workload of the heat exchange subsystem.

[0005] A further improvement of the present invention is that the heat exchange subsystem includes a heat transfer fluid storage tank, a circulation pump arranged downstream of the heat transfer fluid storage tank, the heat transfer fluid is transported to the heat exchange layer for heat exchange by the pumping action of the circulation pump, the left and right symmetrical heat exchange layers are connected in series through pipelines, and then connected to the convection heat exchanger, the downstream end of the convection heat exchanger is connected to the heat transfer fluid storage tank, forming a circulation loop of the heat transfer fluid; the cleaning subsystem is used to remove dust deposited on the curved photovoltaic surface due to wind and sand, and includes a water storage tank, a timeable power pump is arranged downstream of the water storage tank, the timeable power pump is directly connected to the mesh pipe rack and sprayed to the curved photovoltaic surface through a jet nozzle to remove residual dust; green photovoltaic The subsystem includes curved photovoltaics, a transformer system arranged downstream of the curved photovoltaics, and an energy storage system arranged downstream of the transformer system; the heat absorption subsystem is used to utilize the waste heat in the full spectrum of solar energy radiation that is not utilized by the curved photovoltaics to preheat low-temperature water to obtain water vapor for heating and displacing heavy oil, including a water storage tank, a constant flow pump arranged downstream of the water storage tank, the constant flow pump is directly connected to a convection heat exchanger, an electric heating furnace is arranged at the downstream end of the convection heat exchanger, a steam stabilizer is arranged at the downstream end of the electric heating furnace, a high-precision gas flow meter is arranged at the downstream end of the steam stabilizer, a temperature controller is arranged at the downstream end of the high-precision gas flow meter, the temperature controller is directly connected to the heavy oil thermal recovery wellbore, and the heavy oil thermal recovery wellbore is fixed in the rock formation.

[0006] A further improvement of the present invention is that the mesh pipe rack is designed as a hollow pipe, the interior of which provides a flow channel for clean water.

[0007] A further improvement of the present invention is that the heat transfer fluid storage tank stores a heat transfer fluid having a mass fraction of 0.5 wt % metallic copper nanofluid, the particle size of the copper particles ranges from 50nm to 100nm; the symmetrical layer mirror is used to reflect solar energy to the surface of the curved photovoltaic for power generation, and the equivalent concentration ratio of the focused solar energy is between 5-10.

[0008] A further improvement of the present invention is that the mesh pipe rack plays a supporting and fixing role on the one hand, and is used to spray the water in the water storage tank onto the surface of the curved photovoltaic through the jet nozzles arranged on the mesh pipe rack on the other hand, so as to remove dust deposited on the photovoltaic surface due to continuous operation; the mesh pipe rack as a whole adjusts its position according to the orientation sensing characteristics of the photosensitive probe under the driving action of the universal wheel, so that the solar radiation photons are focused on the curved photovoltaic surface through the focusing effect of the sheet mirror.

[0009] A further improvement of the present invention is that the heat-conducting layer is made of aluminum oxide and is fixed with a heat-conducting adhesive when in contact with the back of the curved photovoltaic panel; the heat-conducting fluid takes away the heat from the back of the curved photovoltaic panel through the heat exchange layer, and transfers it to the normal temperature water medium transported by the constant flow pump through the heat exchange effect of the convection heat exchanger.

[0010] A further improvement of the present invention is that the electric energy generated by the curved photovoltaic system is converted into energy within a set current and voltage range through the inversion action of the transformer system and stored in the energy storage system; the energy of the energy storage system can be directly applied on site in the form of electric energy, or used for the electric energy consumed in the electric heating furnace.

[0011] A further improvement of the present invention is that the normal temperature water preheated by the convection heat exchanger is heated by the electric heating furnace to generate sufficient steam.

[0012] A further improvement of the present invention is that the curved photovoltaics are made of monocrystalline silicon or polycrystalline silicon; the timeable power pump can customize the length of time required for jet spraying to clean the curved photovoltaics according to user needs; the flow rate of steam is accurately monitored by a high-precision gas flow meter, and the temperature of the pipeline close to the wellhead is measured by a thermostat; in the process of heavy oil extraction, the heated heavy oil in the rock formation is extracted to the ground through the heavy oil thermal recovery wellbore.

[0013] A method for developing and supplying green electricity in collaboration with thermal displacement of heavy oil in deep rock formations, comprising: When the system starts running, the solar energy in the mining area is focused by the mirror layer and the photons are reflected to the surface of the curved photovoltaic. The orientation of the mirror tray is adjusted according to the local longitude and latitude and seasonal changes to adjust the focusing orientation of the mirror layer. Since the solar spectrum ranges from 250nm to 2500nm, only part of the photons can be absorbed and converted by the curved photovoltaic and emit electrical energy, and the remaining photons are expressed in the form of heat. The electrical energy emitted by the curved photovoltaic is further stored by the green electronic system, and the heat therein is transferred to the heat exchange layer through the heat conductive layer. The heat transfer fluid in the heat exchange subsystem enters the heat exchange layer and promptly carries away the heat in the heat exchange layer. The water in the cleaning subsystem is transported to the mesh pipe rack on the one hand, and the water in the pipeline is sprayed to the surface of the curved photovoltaic through the jet nozzle to remove dust or impurities covering the surface during continuous work at night or during the day. For the changes in the solar radiation angle throughout the day, the universal wheel adjusts the tilt angle of the entire mesh pipe rack in real time according to the feedback of the test value change of the photosensitive probe.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects: 1. The present invention can simultaneously provide green electricity supply and continuous and stable water vapor input for oil and gas field development mines, reduce the viscosity of heavy oil in ultra-deep rock formations, improve its fluidity, and increase the recovery rate of heavy oil mining. At the same time, the entire operation process requires almost no external energy supply, and the system modules can achieve energy self-sustaining, which improves the comprehensive utilization efficiency of energy, and the entire process has almost no carbon emissions.

[0015] 2. The integrated design between system modules is reasonable and the functions are complementary. The process control of the control system can be fed back according to the state characteristics of the actual oil and gas field steam. While using photovoltaic power generation, waste heat loss is reduced. Waste heat is used to preheat water vapor, and the series electric heating furnace design is used to improve the concentration and stability of steam, ensuring the effect of terminal steam heating and viscosity reduction.

[0016] 3. This technology can make full use of the objective geographical location of the oil and gas fields, where the area is vast and the population is sparse, and scale up the solar energy cascade conversion modules in this system, greatly increasing the dispatchability of renewable energy and the flexibility of on-site active operations. The electric energy output by the system and the production efficiency of heavy oil thermal recovery can be developed in parallel and synergistically, greatly reducing the cost of the technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the integrated flow of the system of the present invention; Figure 2 It is a schematic diagram of the layout of local components of the solar energy cascade conversion module in the system of the present invention.

[0019] Description of reference numerals: 1 is a square base, 2 is a support rod, 3 is a universal wheel, 4 is a mesh pipe rack, 5 is a jet nozzle, 6 is a condenser support rod, 7 is a mirror tray, 8 is a sheet mirror, 9 is a curved photovoltaic, 10 is a heat conductive layer, 11 is a heat exchange layer, 12 is a photosensitive probe, 13 is a heat transfer fluid storage tank, 14 is a circulation pump, 15 is a voltage conversion system, 16 is an energy storage system, 17 is a convection heat exchanger, 18 is a water storage tank, 19 is a timeable 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 DESCRIPTION

[0020] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0026] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] Example 1 like Figure 1 and Figure 2As shown, the present invention provides a deep rock formation heavy oil thermal displacement development collaborative green electricity supply system, which is mainly composed of two parts: a solar energy cascade conversion module and an auxiliary system module. The solar energy cascade conversion module includes a square base 1, a support rod 2 arranged above the square base 1, a universal wheel 3 arranged on the support rod 2, and a mesh pipe rack 4 connected to the universal wheel 3. The mesh pipe rack 4 is a hollow tube design, and the interior can provide a flow channel for clean water. Symmetrically placed jet nozzles 5 are arranged in the transverse direction of the mesh pipe rack 4, and a concentrator support rod 6 is arranged in the longitudinal direction of the mesh pipe rack 4. A photosensitive probe 12 is arranged on the top of the mesh pipe rack 4. Each solar energy cascade conversion module is provided with four concentrator support rods 6, and mirror trays 7 arranged symmetrically in pairs are arranged on the concentrator support rods 6. A sheet mirror 8 is arranged above the mirror tray 7, and each mirror tray 7 corresponds to three sheet mirrors 8. The sheet mirrors 8 placed on the two symmetrical mirror trays 7 can reflect and focus solar energy 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 photothermal synergistic utilization of solar energy.

[0030] The auxiliary system module includes a heat exchange subsystem, a cleaning subsystem, a green electronic 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, convert and utilize, and improve the overall utilization efficiency of the solar energy spectrum. The excess heat in the green electronic system can be taken away in time, which can improve the safety and efficiency of the green electronic system. The cleaning subsystem is used to timely remove the dust deposited on the surface of the curved photovoltaic 9 due to wind and sand, so as to avoid dust and other stains blocking the photon radiation path and reducing the power output performance of the curved photovoltaic 9. It can provide guarantee for the smooth operation of the green electronic system. The green electronic 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 and store it in the energy storage system 16. The heat absorption subsystem is used to preheat the low-temperature water with the heat carried by the heat exchange subsystem, increase the production of water vapor at the rear end and reduce the workload of the heating furnace 21), which plays a role in energy saving.

[0031] Specifically, the heat exchange subsystem includes a heat transfer fluid storage tank 13, a circulating pump 14 arranged downstream of the heat transfer fluid storage tank 13, and the heat transfer fluid is pumped by the circulating 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 to promptly remove dust deposited on the surface of the curved photovoltaic 9 due to wind and sand. It includes a water storage tank 18. A timeable power pump 19 is arranged downstream of the water storage tank 18. The timeable power pump 19 is directly connected to the mesh pipe rack 4 and sprayed to the surface of the curved photovoltaic 9 through the jet nozzle 5 to remove the residual dust and ensure the conversion efficiency of photovoltaics. The green electronic system includes a curved photovoltaic 9, a transformer system 15 arranged downstream of the curved photovoltaic 9, and an energy storage system 16 arranged downstream of the transformer system 15. The purpose of setting up the heat absorption subsystem is to use the waste heat in the full spectrum of solar energy radiation that is not used by the curved photovoltaic 9 to preheat low-temperature water to obtain water vapor for heating and displacement of heavy oil. It mainly includes a water storage tank 18, a constant flow pump 20 arranged downstream of the water storage tank 18, and the constant flow pump 20 is directly connected to the convection heat exchanger 17. An electric heating furnace 21 is arranged at the downstream end of the convection heat exchanger 17, and a steam stabilizer 24 is arranged at the downstream end of the electric heating furnace 21. A high-precision gas flow meter 25 is arranged at the downstream end of the steam stabilizer 24, and a temperature controller 26 is arranged at the downstream end of the high-precision gas flow meter 25. The temperature controller 26 is directly connected to the heavy oil thermal recovery wellbore 23, and the heavy oil thermal recovery wellbore 23 is fixed in 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, reduce its viscosity and improve its fluidity in the rock formation.

[0032] In this embodiment, the heat transfer fluid storage tank 13 stores a heat transfer fluid having a mass fraction of 0.5 wt % of metallic copper nanofluid, the particle size of copper particles ranges from 50nm to 100nm. The circulating pump 14 can control the flow rate, flow rate and working cycle of the heat transfer fluid. The symmetrical layer mirror 8 can reflect solar energy to the surface of the curved photovoltaic 9 for power generation, and the equivalent concentration ratio of the focused solar energy is between 5-10.

[0033] In this embodiment, the solar energy cascade conversion module can be added in a modular form to form a distributed conversion form. The mesh pipe rack 4 plays a supporting and fixing role on the one hand, and can spray the water in the water tank 18 to the surface of the curved photovoltaic 9 through the jet nozzle 5 set on the mesh pipe rack 4, so as to promptly remove the dust deposited on the photovoltaic surface due to continuous operation. The mesh pipe rack 4 as a whole can adjust the orientation of the mesh pipe rack 4 under the driving action of the universal wheel 3 according to the orientation sensing characteristics of the photosensitive probe 12, so that the solar radiation photons are focused on the surface of the curved photovoltaic 9 through the focusing effect of the layer mirror 8.

[0034] In this embodiment, the heat conducting layer 10 is made of aluminum oxide, and is fixed with a heat conducting adhesive when in contact with the back of the curved photovoltaic 9. The heat conducting fluid takes away the heat from the back of the curved photovoltaic 9 through the heat exchange layer 11, and transfers it to the normal temperature water medium transported by the constant flow pump 20 through the heat exchange effect of the convection heat exchanger 17.

[0035] In this embodiment, the electric energy generated by the curved photovoltaic 9 is converted by the transformer system 15 to obtain energy transfer within a set current and voltage range 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 electric energy, or can be used for the electric energy consumed in the electric heating furnace 21.

[0036] In this embodiment, the normal temperature water preheated by the convection heat exchanger 17 can be heated by the electric heating furnace 21 to generate sufficient steam, and the heating load of the electric heating furnace 21 can be set according to the actual steam demand on site. A steam stabilizer 24 is provided in the steam delivery pipeline, which can ensure that the steam undergoes as little phase change as possible during the delivery process to reduce the loss of steam and ensure the steam consumption at the application end.

[0037] In this embodiment, the curved photovoltaic 9 can be made of monocrystalline silicon or polycrystalline silicon. The timed power pump 19 can customize the length of time required for jet jet cleaning of the curved photovoltaic 9 according to user needs. The flow rate of steam is accurately monitored by a high-precision gas flow meter 25, and the temperature of the pipeline close to the wellhead is measured by a thermostat 26. In the process of heavy oil production, the heated heavy oil in the rock layer 22 is extracted to the ground through the heavy oil thermal recovery wellbore 23.

[0038] Example 2 like Figure 1 and Figure 2As shown, the present invention provides a method for the coordinated green electricity supply of thermal displacement development of deep rock heavy oil, including: before the actual heavy oil thermal recovery process begins, it is necessary to configure a metal copper nanofluid with a mass fraction of 0.5wt%, wherein the particle size range of the copper particles needs to be controlled between 50nm-100nm, and then add the configured nanofluid to the heat transfer fluid storage tank 13. At the same time, a certain amount of room temperature water needs to be filled in the water storage tank 18. When the system starts to run, the solar energy in the mining area reflects the photons to the surface of the curved photovoltaic 9 through the focusing effect of the layer mirror 8. The orientation of the mirror tray 7 can be adjusted according to the local longitude and latitude and seasonal changes to adjust the focusing orientation of the layer mirror 8. Since the range of the solar energy spectrum is between 250nm-2500nm, only part of the photons can be absorbed and converted by the curved photovoltaic 9 and emit electrical energy, and the remaining photons will be expressed in the form of heat. The electric energy generated by the curved photovoltaic 9 is further converted into electric energy within the set current and voltage range by the inversion action of the transformer system 15 and stored in the energy storage system 16, wherein the heat is transferred to the heat exchange layer 11 through the heat conductive layer 10. The heat conductive fluid in the heat conductive fluid storage tank 13 enters the heat exchange layer through the pumping action of the circulating pump 14. Due to the high thermal conductivity of the nanofluid itself, the heat in the heat exchange layer 11 can be carried away in time and transferred to the convection heat exchanger 17. On the one hand, the water in the water storage tank 18 can be transported to the mesh pipe rack 4 through the pumping action of the timeable power pump 19. The mesh pipe rack 4 has a hollow structure inside. Further, the water in the pipeline is sprayed onto the surface of the curved photovoltaic 9 through the jet action of the jet nozzle 5, which is used to remove dust or impurities remaining on the surface during continuous work at night or during the day. In addition, for the change of the solar radiation angle throughout the day, the universal wheel 3 can adjust the inclination angle of the entire mesh pipe rack 4 in real time according to the feedback of the change in the test value of the photosensitive probe 12. Another pipeline connected to the water storage tank 18 is transported to the convection heat exchanger 17 through the constant flow pump 20 to absorb the heat in the aforementioned stream and preheat itself. Further, it is processed by the specified working condition of the electric heating furnace 21 to generate sufficient water vapor. At the same time, long-distance steam transportation 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 record the flow size and flow rate of the steam at the wellhead end in a targeted manner. The above-mentioned steam enters the rock formation through the heavy oil thermal recovery wellbore 23 fixed in the rock formation 22, and can interact with the underground heavy oil to heat the heavy oil to reduce its viscosity, improve its fluidity, and ultimately improve the efficiency of mining. The electric energy in the energy storage system 16 can be directly supplied to the mine for use, or partially used for the required electric energy of the electric heating furnace 21. In addition, for the solar cascade conversion modules mentioned above, an array arrangement can be formed, and multiple modules can be used in series and parallel at the same time to increase the overall power and steam production of the system, which can be adjusted according to the actual energy demand on site.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A deep rock stratum heavy oil thermal displacement development collaborative green electricity supply system, characterized in that: It includes solar energy cascade conversion module and auxiliary system module; The solar energy cascade conversion module comprises a square base (1), a support rod (2) arranged above the square base (1), and a universal wheel (3) arranged on the support rod (2); a mesh pipe rack (4) is connected to the universal wheel (3); symmetrically placed jet nozzles (5) are arranged in the transverse direction of the mesh pipe rack (4); a condenser support rod (6) is arranged in the longitudinal direction of the mesh pipe rack (4); and a photosensitive probe (12) is arranged on the top of the mesh pipe rack (4); each solar energy cascade conversion module is provided with four condenser support rods (6); A pair of mirror trays (7) are arranged axially symmetrically on the concentrator support rod (6); a layer mirror (8) is arranged above the mirror tray (7); each mirror tray (7) corresponds to three layer mirrors (8); the layer mirrors (8) are used to reflect and focus solar energy 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 heat conducting layer (10) is used to transfer heat energy carried by unused near-infrared and infrared light photons in the curved photovoltaic (9) to the heat exchange layer (11); The auxiliary system module includes heat exchange subsystem, cleaning subsystem, green electronic system and 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, convert and utilize, thereby improving the overall utilization efficiency of the solar energy spectrum; the cleaning subsystem is used to promptly remove dust deposited on the surface of the curved photovoltaic (9) due to wind and sand; the green electronic 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 them into electrical energy for storage; the heat absorption subsystem is used to preheat low-temperature water with the heat carried by the heat exchange subsystem, thereby increasing the production of water vapor at the back end and reducing the workload of the heat exchange subsystem.

2. A deep rock stratum heavy oil thermal displacement development collaborative green electricity supply system according to claim 1, characterized in that: The heat exchange subsystem comprises a heat transfer fluid storage tank (13) and a circulation pump (14) arranged 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 a 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 comprises a water storage tank (18). A timeable power pump (19) is arranged downstream of the water storage tank (18). The timeable power pump (19) is directly connected to the mesh pipe rack (4) and sprayed onto the surface of the curved photovoltaic (9) through a jet nozzle (5) to remove residual dust. The green electronic system comprises a curved photovoltaic (9), which is arranged at the curved surface. A transformer system (15) is disposed downstream of the curved photovoltaic system (9); an energy storage system (16) is disposed downstream of the transformer system (15); a heat absorption subsystem is used to utilize waste heat in the full spectrum of solar energy radiation that is not utilized by the curved photovoltaic system (9) to preheat low-temperature water to obtain water vapor for heating and displacement of heavy oil, and includes a water storage tank (18); a constant flow pump (20) is disposed downstream of the water storage tank (18); the constant flow pump (20) is directly connected to a convection heat exchanger (17); an electric heating furnace (21) is disposed at the downstream end of the convection heat exchanger (17); a steam stabilizer (24) is disposed at the downstream end of the electric heating furnace (21); a high-precision gas flow meter (25) is disposed at the downstream end of the steam stabilizer (24); a temperature controller (26) is disposed at the downstream end of the high-precision gas flow meter (25); the temperature controller (26) is directly connected to a heavy oil thermal recovery wellbore (23); and the heavy oil thermal recovery wellbore (23) is fixed in a rock formation (22).

3. A deep rock stratum heavy oil thermal displacement development collaborative green electricity supply system according to claim 2, characterized in that: The mesh pipe rack (4) is designed as a hollow pipe, and the interior thereof provides a flow channel for clean water.

4. A deep rock stratum heavy oil thermal displacement development collaborative green electricity supply system according to claim 2, characterized in that: The heat transfer fluid storage tank (13) stores a heat transfer fluid with a mass fraction of 0.5 wt % metallic copper nanofluid, the particle size of the copper particles ranges from 50nm to 100nm; the symmetrical layer mirror (8) is used to reflect solar energy to the surface of the curved photovoltaic (9) for power generation, and the equivalent concentration ratio of the focused solar energy is between 5-10.

5. The deep rock stratum heavy oil thermal displacement development collaborative green electricity supply system according to claim 2 is characterized in that: The mesh pipe rack (4) plays a supporting and fixing role on the one hand, and is used to spray water in the water storage tank (18) onto the surface of the curved photovoltaic (9) through the jet nozzle (5) provided on the mesh pipe rack (4), so as to remove dust deposited on the photovoltaic surface due to continuous operation; the mesh pipe rack (4) as a whole adjusts the orientation of the mesh pipe rack (4) under the driving action of the universal wheel (3) according to the orientation sensing characteristics of the photosensitive probe (12), so that solar radiation photons are focused on the surface of the curved photovoltaic (9) through the focusing action of the sheet mirror (8).

6. A deep rock stratum heavy oil thermal displacement development collaborative green electricity supply system according to claim 2, characterized in that: The heat-conducting layer (10) is made of aluminum oxide and is fixed with a heat-conducting adhesive when in contact with the back of the curved photovoltaic (9); the heat-conducting fluid takes away the heat from the back of the curved photovoltaic (9) through the heat exchange layer (11), and transfers the heat to the normal temperature water medium transported by the constant flow pump (20) through the heat exchange effect of the convection heat exchanger (17).

7. The deep rock stratum heavy oil thermal displacement development and green electricity supply system according to claim 2 is characterized in that: The electric energy generated by the curved photovoltaic (9) is converted by the voltage conversion system (15) to obtain energy within a set current and voltage range and is stored in the energy storage system (16); The energy of the energy storage system (16) can be directly applied on site in the form of electric energy, or used as the electric energy consumed in the electric heating furnace (21).

8. The deep rock stratum heavy oil thermal displacement development collaborative green electricity supply system according to claim 2 is characterized in that: The normal temperature water preheated by the convection heat exchanger (17) is heated by the electric heating furnace (21) to generate a sufficient amount of steam.

9. The deep rock stratum heavy oil thermal displacement development and green electricity supply system according to claim 2 is characterized in that: The curved photovoltaic (9) is made of monocrystalline silicon or polycrystalline silicon; the timeable power pump (19) can customize the length of time required for jet cleaning of the curved photovoltaic (9) according to user needs; the flow rate of steam is accurately monitored by a high-precision gas flow meter (25), and the temperature of the pipeline close to the wellhead is measured by a temperature controller (26); during the heavy oil production process, the heated heavy oil in the rock layer (22) is extracted to the ground through the heavy oil thermal production wellbore (23).

10. A method for developing deep stratum heavy oil thermal displacement and coordinating green electricity supply, characterized in that: The method is based on a deep rock formation heavy oil thermal displacement development collaborative green electricity supply system according to any one of claims 1 to 9, comprising: When the system starts to operate, the solar energy in the mining area is focused by the layer mirror (8) and the photons are reflected to the surface of the curved photovoltaic (9). The orientation of the mirror tray (7) is adjusted according to the local longitude and latitude and seasonal changes to adjust the focusing orientation of the layer mirror (8). Since the solar energy spectrum ranges from 250nm to 2500nm, only part of the photons can be absorbed and converted by the curved photovoltaic (9) and emit electrical energy, and the remaining photons are expressed in the form of heat. The electrical energy emitted by the curved photovoltaic (9) is further stored by the green electronic system, and the heat therein is transferred through the heat conductive layer (1 0) is transferred to the heat exchange layer (11); the heat transfer fluid in the heat exchange subsystem enters the heat exchange layer and promptly carries away the heat in the heat exchange layer (11); the water in the cleaning subsystem is transported to the mesh pipe rack (4) on the one hand, and 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 remaining on the surface during continuous work at night or during the day; in response to changes in the solar radiation angle throughout the day, the universal wheel (3) adjusts the tilt angle of the entire mesh pipe rack (4) in real time according to the feedback of the test value change of the photosensitive probe (12).

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