Device for storing solar energy by using crude oil storage tank and use method thereof
By setting up solar energy collectors and thermal medium storage tank wall heat exchangers in crude oil storage tanks in the oil field, solar energy is converted into thermal energy, which solves the problems of high energy consumption and high CO2 emissions in the crude oil heating system during oil field mining, and achieves the effect of efficient use of solar energy and reducing carbon emissions.
Patent Information
- Application Number
- CN202311489059.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-09
- Publication Date
- 2025-05-09
AI Technical Summary
During the oil field mining process, natural gas and crude oil in the crude oil heating system consume high energy, and CO2 emissions are high, making it difficult to effectively use solar energy for heating.
By setting up a solar energy collector and a thermal medium storage tank wall heat exchanger in the crude oil storage tank, solar energy is converted into thermal energy, and the thermal medium storage tank wall heat exchanger and heat medium storage tank wall heat exchanger in the crude oil storage tank can store and release heat energy for heating crude oil and other thermal media.
It improves the efficiency of solar heat utilization, reduces the self-consumption of natural gas and crude oil, and achieves nearly zero carbon emissions of CO2 in the crude oil production process when combined with green power supply devices in winter.
Smart Images
Figure CN119958112A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of new energy utilization, low carbon and energy saving, and is a device for storing solar energy by utilizing a crude oil storage tank and a method for using the device. Background Art
[0002] The main energy-consuming equipment in oilfield production includes boilers, heating furnaces, compressors, pumping units, pumps, etc. Direct energy sources mainly include natural gas, electricity, crude oil, heat, diesel, gasoline and liquefied petroleum gas. The direct energy consumption of natural gas and crude oil for boilers and heating furnaces often accounts for more than 60% of the total comprehensive energy consumption; it is also the main source of carbon emissions in oil and gas production. Under the "dual carbon" goal, we will make full use of light resources and other clean energy, gradually realize the clean substitution of energy consumption in oil and gas production, and realize the green and sustainable development of oil and gas field enterprises, so as to achieve CO 2 Near-zero emissions target.
[0003] The hot spots for oilfield development are: heating and heat preservation of single wells, heating and heat preservation of crude oil in transfer stations and water discharge stations, heating and heat preservation of rooms in winter, dehydration of crude oil in joint stations, and heating of domestic hot water. These uses of heat are all continuous. To make better use of solar energy in heating crude oil, it is necessary to solve the intermittent and unreliable problems of solar energy, and setting up a heat storage device in the solar energy utilization system is one of the most effective ways to solve the above problems. At present, there are some cases of using solar energy to heat oilfield production media at home and abroad. The solar energy utilization system for heating single well crude oil in Changqing Oilfield, Qinghai Oilfield and Jiangsu Oilfield is equipped with a special water storage tank for heat storage. Liaohe Oilfield also sets up a special water storage tank for heat storage in the solar energy utilization system of the transfer station for heating crude oil, produced water and natural gas. The solar power generation heat storage system is also often designed for 7h to 12h energy storage. The investment in the solar energy heat storage system generally accounts for 15% to 30% of the solar energy utilization system.
[0004] The water content of oilfield exploitation is relatively low in the early stage, but in the later stage, the water content of crude oil can reach more than 90%; the initial design of the water content of the treatment device is often 50%, and the total reserves of the production liquid storage tank can be used to meet the daily change demand of solar energy reserve. The production liquid storage tanks of oilfields mainly include: produced water deoiling tanks, water injection storage tanks, fire water storage tanks, crude oil storage tanks, transfer stations and accident oil tanks of water discharge stations; according to the "Design Specifications for Deoiling Tanks" SY / T0083, the effective residence time of sewage in natural deoiling tanks is 3h to 4h, plus the upper water distribution area should not be less than 1.5m, the clear water area should not be less than 1.0m, and the lower mud collection area should not be less than 1.0m, the total residence time can reach 6h to 8h; in the "Design Specifications for Oilfield Water Injection Engineering" GB50391, when the water for injection is of a single water quality, it is advisable to set up 2 tanks; the total effective volume of the water storage tank can be calculated according to the design water volume of the water injection station of 4h to 6h; the total residence time of the water system of the oilfield joint station should be greater than 12h. The higher the water temperature, the more favorable it is for oil-water separation. In addition, there is no water temperature requirement for produced water injected into the formation. In the "Oilfield Oil and Gas Gathering and Transportation Design Specification" GB50350, when production really needs it, the transfer station and the water discharge station can be equipped with an emergency oil tank, and the volume can be calculated according to the station's 4h to 24h design liquid volume, and the volume is often taken as 12h to 24h; the storage days of oil fields where crude oil is transported by pipeline should not be less than 3d; and the dehydration temperature of thin crude oil is often less than or equal to 50℃. In the "Foam Fire Extinguishing System Technical Standard" GB50151, the water temperature of the water source should be 4℃ to 35℃; fire water storage tanks are not easy to be energy storage tanks. Summary of the invention
[0005] The present invention provides a device for storing solar energy using crude oil storage tanks and a method for using the same, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problems of high energy consumption of natural gas and crude oil and CO in the existing crude oil heating system for oil field development. 2 The problem of high emissions.
[0006] One of the technical solutions of the present invention is achieved through the following measures: a device for storing solar energy using a crude oil storage tank, comprising a solar collector and a production storage tank, wherein a heat medium storage tank wall heat exchanger and a heat medium storage tank wall heat exchanger are arranged at the lower part of the production storage tank, a heat-absorbing pipeline is fixedly connected between the pipeline outlet of the solar collector and the inlet of the heat medium storage tank wall heat exchanger, a heat-releasing pipeline is fixedly connected between the outlet of the heat medium storage tank wall heat exchanger and the inlet of the solar collector, a useful heat medium input pipeline is fixedly connected to the inlet of the heat medium storage tank wall heat exchanger, and a useful heat medium output pipeline is fixedly connected to the outlet of the heat medium storage tank wall heat exchanger.
[0007] The following is a further optimization and / or improvement of one of the above-mentioned technical solutions: The above also includes a heat medium circulation device, which includes a heat medium circulation pump and an expansion tank. The heat medium circulation pump is fixedly installed on the heat release pipeline, a pressure output pipeline is fixedly connected between the heat absorption pipeline and the expansion tank, a heat medium thermometer is arranged on the heat absorption pipeline between the pressure output pipeline and the heat medium storage tank wall heat exchanger, and a heat medium regulating valve is fixedly installed on the heat absorption pipeline between the heat medium thermometer and the heat medium storage tank wall heat exchanger.
[0008] A heat medium thermometer is arranged on the heat medium output pipeline, and a heat medium regulating valve is fixedly installed on the heat medium output pipeline between the heat medium thermometer and the heat medium storage tank wall heat exchanger.
[0009] A tank thermometer is arranged on the upper part of the production tank, and a tank electric heating rod is arranged in the middle part of the production tank. One end of the tank electric heating rod extends out of the production tank, and the end extending out of the production tank is electrically connected to a green electricity power supply device.
[0010] The above also includes a controller, and a heat medium circulation pump, a heat medium thermometer, a heat medium regulating valve, a storage tank thermometer, a green power supply device, a heat medium thermometer and a heat medium regulating valve are all electrically connected to the controller.
[0011] The above-mentioned heat medium storage tank wall heat exchanger and heat medium storage tank wall heat exchanger are both coil heat exchangers.
[0012] The second technical solution of the present invention is achieved through the following measures: a method for using a device for storing solar energy using a crude oil storage tank, which is carried out according to the following method: in the first step, after the solar thermal collector collects the heat energy of the sun, the heat energy is transmitted to the heat absorber in the heat absorption pipeline; in the second step, the heat absorber carrying the heat energy is sent to the heat exchanger on the wall of the heat medium storage tank through the heat absorption pipeline to exchange heat with the energy storage crude oil in the production tank; in the third step, after the heat absorber exchanges heat with the energy storage crude oil, the temperature of the heat absorber decreases, the temperature of the energy storage crude oil increases, and the cooled heat absorber is After releasing heat, the pipeline is sent to the solar collector to circulate and absorb heat energy again, and the heated energy storage crude oil continues to store heat energy; in the fourth step, the heat medium is sent to the heat exchanger on the wall of the heat medium storage tank through the heat medium input pipeline to exchange heat with the heated energy storage crude oil in the production tank; in the fifth step, after the heat medium exchanges heat with the heated energy storage crude oil, the temperature of the heat medium increases and the temperature of the energy storage crude oil decreases, and the heated heat medium is sent to the downstream process through the heat medium output pipeline, and the cooled energy storage crude oil circulates and exchanges heat with the heat absorber carrying heat energy again.
[0013] The following is a further optimization and / or improvement of the second technical solution of the above invention: The above-mentioned production storage tank is one or more of a transfer station accident tank, a produced water deoiling tank, a water injection storage tank, and a crude oil storage tank.
[0014] In the above second step, the temperature of the heat absorber carrying heat energy is 90°C to 150°C, the temperature of the production tank is 50°C to 100°C, and the temperature of the heat medium after heating is 35°C to 70°C.
[0015] In the above-mentioned cloudy weather or winter, when the temperature of the heat medium after heating is lower than 35°C, the electric heating rod of the storage tank is started to heat the energy storage crude oil in the production tank.
[0016] The present invention converts solar energy into heat for oil field development, greatly improving the utilization efficiency of solar heat and reducing the self-consumption of natural gas and crude oil. In winter, it can be used in conjunction with a green electricity power supply device to achieve CO2 reduction in the crude oil production process. 2 Nearly zero carbon emissions. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Attached Figure 1 This is a schematic diagram of the process flow of Example 1 of the present invention.
[0018] The codes in the attached drawings are: 1 is a solar collector, 2 is an expansion tank, 3 is a heat medium thermometer, 4 is a heat medium regulating valve, 5 is a heat medium circulation pump, 6 is a heat medium storage tank wall heat exchanger, 7 is a storage tank thermometer, 8 is a production storage tank, 9 is a storage tank electric heating rod, 10 is a green electricity power supply device, 11 is a controller, 12 is a heat medium thermometer, 13 is a heat medium input pipeline, 14 is a heat medium output pipeline, 15 is a heat medium regulating valve, 16 is a heat medium storage tank wall heat exchanger, 17 is a pressure output pipeline, 18 is a pipeline after heat absorption, and 19 is a pipeline after heat release. DETAILED DESCRIPTION
[0019] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions. In the present invention, unless otherwise specified, the devices and apparatuses used are all known and commonly used devices and apparatuses in the art.
[0020] The present invention will be further described below in conjunction with embodiments: Embodiment 1: As attached Figure 1 As shown, the device for storing solar energy using a crude oil storage tank includes a solar collector 1 and a production storage tank 8, wherein a heat medium storage tank wall heat exchanger 6 and a useful heat medium storage tank wall heat exchanger 16 are arranged at the lower part of the production storage tank 8, a heat-absorbing pipeline 18 is fixedly connected between the pipeline outlet of the solar collector 1 and the inlet of the heat medium storage tank wall heat exchanger 6, a heat-releasing pipeline 19 is fixedly connected between the outlet of the heat medium storage tank wall heat exchanger 6 and the pipeline inlet of the solar collector 1, a useful heat medium input pipeline 13 is fixedly connected to the inlet of the useful heat medium storage tank wall heat exchanger 16, and a useful heat medium output pipeline 14 is fixedly connected to the outlet of the useful heat medium storage tank wall heat exchanger 16.
[0021] The present invention utilizes the solar energy stored in the crude oil storage tank during the crude oil production process to heat the crude oil and other heat media, which not only fully utilizes light resources and other clean energy, gradually realizes the clean replacement of energy consumption in oil and gas production, but also realizes the green and sustainable development of oil and gas field enterprises, thereby realizing CO 2 Near-zero emissions target.
[0022] Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, the device for storing solar energy using a crude oil storage tank also includes a heat medium circulation device, which includes a heat medium circulation pump 5 and an expansion tank 2. The heat medium circulation pump 5 is fixedly installed on the heat release pipeline 19, and a pressure output pipeline 17 is fixedly connected between the heat absorption pipeline 18 and the expansion tank 2. A heat medium thermometer 3 is provided on the heat absorption pipeline 18 between the pressure output pipeline 17 and the heat medium storage tank wall heat exchanger 6, and a heat medium regulating valve 4 is fixedly installed on the heat absorption pipeline 18 between the heat medium thermometer 3 and the heat medium storage tank wall heat exchanger 6.
[0023] According to the needs, the heat absorber in the pipeline 18 after absorbing heat is crude oil. When the crude oil is heated, gas evaporates and gas blockage occurs. The expansion tank 2 can release pressure in time to prevent gas blockage from blocking the pipeline.
[0024] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, a heat medium thermometer 12 is provided on the heat medium output pipeline 14, and a heat medium regulating valve 15 is fixedly installed on the heat medium output pipeline 14 between the heat medium thermometer 12 and the heat medium storage tank wall heat exchanger 16.
[0025] Embodiment 4: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, a tank thermometer 7 is arranged on the upper part of the production tank 8, and a tank electric heating rod 9 is arranged in the middle part of the production tank 8. One end of the tank electric heating rod 9 extends out of the production tank 8, and the end extending out of the production tank 8 is electrically connected to a green electricity power supply device 10.
[0026] Embodiment 5: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, the device for storing solar energy using a crude oil storage tank also includes a controller 11, and a heat medium circulation pump 5, a heat medium thermometer 3, a heat medium regulating valve 4, a storage tank thermometer 7, a green electricity power supply device 10, a heat medium thermometer 12 and a heat medium regulating valve 15 are all electrically connected to the controller 11.
[0027] According to the needs, after the heat medium thermometer 3, the storage tank thermometer 7, and the heat medium thermometer 12 collect temperature values, the controller 11 timely adjusts the heat medium circulation pump 5, the heat medium regulating valve 4, the heat medium regulating valve 15, and the green power supply device 10 according to the data collection, so as to realize the control of the crude oil temperature in the production storage tank 8. At the same time, the controller 11 can realize the automatic control and unattended operation of the device for storing solar energy in the crude oil storage tank.
[0028] The controller 11 in the present invention can be a microprocessor of model ARM720T.
[0029] In the present invention, unless otherwise specified, the equipment and devices used are all the equipment and devices known and used in the art.
[0030] Embodiment 6: As an optimization of the above embodiment, as shown in the attached Figure 1 As shown, the heat medium storage tank wall heat exchanger 6 and the heat medium storage tank wall heat exchanger 16 are both coil heat exchangers.
[0031] As required, the pipelines and equipment of the device for storing solar energy using crude oil storage tanks may be provided with conventional valves, thermometers, pressure gauges, etc. known and used in the art according to production needs.
[0032] Embodiment 7: As attached Figure 1 As shown, the method of using the device for storing solar energy using a crude oil storage tank is carried out according to the following method: in the first step, after the solar thermal collector 1 collects the heat energy of the sun, the heat energy is transmitted to the heat absorber in the heat absorption pipeline 18; in the second step, the heat absorber carrying the heat energy is sent to the heat medium storage tank wall heat exchanger 6 through the heat absorption pipeline 18 to exchange heat with the energy storage crude oil in the production storage tank 8; in the third step, after the heat absorber exchanges heat with the energy storage crude oil, the temperature of the heat absorber decreases, the temperature of the energy storage crude oil increases, and the cooled heat absorber is sent to the solar energy storage tank through the heat release pipeline 19. The collector 1 circulates and absorbs heat energy again, and the heated energy storage crude oil continues to store heat energy; in the fourth step, the heat medium is sent to the heat medium storage tank wall heat exchanger 16 through the heat medium input pipeline 13, and exchanges heat with the heated energy storage crude oil in the production tank 8; in the fifth step, after the heat medium exchanges heat with the heated energy storage crude oil, the temperature of the heat medium increases and the temperature of the energy storage crude oil decreases, and the heated heat medium is sent to the downstream process through the heat medium output pipeline 14, and the cooled energy storage crude oil circulates and exchanges heat with the heat absorber carrying heat energy again.
[0033] Embodiment 8: As attached Figure 1 As shown, as an optimization of the above embodiment, the production storage tank 8 is one or more of a transfer station accident tank, a produced water deoiling tank, a water injection storage tank, and a crude oil storage tank.
[0034] Embodiment 9: As attached Figure 1As shown, as an optimization of the above embodiment, in the second step, the temperature of the heat absorber carrying heat energy is 90°C to 150°C, the temperature of the production storage tank 8 is 50°C to 100°C, and the temperature of the heat medium after heating is 35°C to 70°C.
[0035] Embodiment 10: As attached Figure 1 As shown, as an optimization of the above embodiment, in cloudy weather or in winter, when the temperature of the heated heat medium is lower than 35°C, the tank electric heating rod 9 is started to heat the energy storage crude oil in the production tank 8.
[0036] Example 11: (Using solar energy stored in the transfer station accident tank to provide crude oil and heating in the station) As attached Figure 1 As shown, in summer, the solar collector 1 works alone, and the heat energy is collected by the controller 11 respectively using the temperature data of the heat medium thermometer 12, the heat medium thermometer 3 and the storage tank thermometer 7, and the heat medium regulating valve 4 is adjusted and controlled to adjust and control the temperature of the heat medium thermometer 3 to not be lower than 100°C and the temperature of the storage tank thermometer 7 to be between 50°C and 90°C before loading and shipping; in cloudy weather, the storage tank electric heating rod 9 is used for heating. In winter, the solar collector 1 and the storage tank electric heating rod 9 work together to maintain the temperature as described above to heat the crude oil in the marginal well storage tank. The system does not have a heat medium regulating valve 15 and a heat medium storage tank wall heat exchanger 16.
[0037] Example 12: (Storing solar energy in the transfer station accident tank for crude oil and heating in the station) As attached Figure 1 As shown, in summer, the solar collector 1 works alone, and the heat energy is utilized by collecting the temperature data of the heat medium thermometer 12, the heat medium thermometer 3 and the storage tank thermometer 7 through the controller 11, adjusting and controlling the heat medium regulating valve 4, the heat medium regulating valve 15 and the heat medium circulation pump 5, adjusting and controlling the temperature of the heat medium thermometer 3 to be higher than 90°C, the temperature of the storage tank thermometer 7 to be between 55°C and 70°C, and the temperature of the heat medium thermometer 12 to be between 30°C and 50°C; in cloudy weather, the storage tank electric heating rod 9 is used for heating; in winter, the solar collector 1 and the storage tank electric heating rod 9 work together to maintain the temperature as described above to heat the crude oil in the marginal well storage tank. The system can be used without the heat medium regulating valve 15 and the heat medium storage tank wall heat exchanger 16.
[0038] Example 13: (Produced water deoiling tank + water injection storage tank stores solar energy and provides heating for crude oil and station at the same time) As attached Figure 1As shown, in summer, the solar collector 1 works alone, and the heat energy is utilized by collecting the temperature data of the heat medium thermometer 12, the heat medium thermometer 3 and the storage tank thermometer 7 through the controller 11, adjusting and controlling the heat medium regulating valve 4, the heat medium regulating valve 15, the heat medium storage tank wall heat exchanger 16 and the heat medium circulation pump 5, adjusting and controlling the temperature of the heat medium thermometer 3 to be not less than 100°C, the temperature of the produced water deoiling tank + injection water storage tank thermometer to be between 85°C and 95°C, and the temperature of the heat medium thermometer 12 to be between 35°C and 70°C; during heat exchange: the crude oil dehydration temperature is between 35°C and 55°C, the domestic hot water temperature is between 45°C and 60°C, and the room heating water temperature is between 55°C and 70°C in winter; in cloudy weather, the storage tank electric heating rod 9 is used for heating; in winter, the solar collector 1 and the storage tank electric heating rod 9 work together; the heat medium storage tank wall heat exchanger 16 is arranged in the injection water storage tank to make full use of the overall residence time of the water system.
[0039] Example 14: (Produced water de-oiling tank + water injection storage tank + purified oil storage tank store solar energy to provide heating for crude oil and station at the same time) As attached Figure 1 As shown, in summer, the solar collector 1 works alone, and the heat energy is collected by using the temperature of the heat medium thermometer 12, the heat medium thermometer 3 and the storage tank thermometer 7, respectively, to adjust and control the heat medium regulating valve 4, the heat medium regulating valve 15, the heat medium storage tank wall heat exchanger 16 and the heat medium circulation pump 5, and the temperature of the heat medium thermometer 3 is adjusted and controlled to be not less than 100°C, the temperature of the produced water deoiling tank + water injection storage tank + purified oil storage tank thermometer 7 is between 85°C and 95°C, and the temperature of the heat medium thermometer 12 is between 35°C and 70°C; during heat exchange: the crude oil dehydration temperature is between 35°C and 55°C, the domestic hot water temperature is between 45°C and 60°C, and the room heating water temperature is between 55°C and 70°C in winter; when the continuous cloudy weather is more than 2 days, the storage tank electric heating rod 9 is used for heating; in winter, the solar collector 1 and the storage tank electric heating rod 9 work together; the heat medium storage tank wall heat exchanger 16 can be respectively arranged in the water injection storage tank and the purified oil storage tank.
[0040] According to Examples 11 to 14, after the device for storing solar energy in a crude oil storage tank is used, the green energy utilization rate reaches more than 30%, and the carbon emission is reduced by at least 15%.
[0041] In summary, the present invention converts solar energy into heat for oil field development, greatly improving the utilization efficiency of solar heat and reducing the self-consumption of natural gas and crude oil. In winter, it is combined with green electricity supply devices to achieve CO2 reduction in the crude oil production process. 2 Nearly zero carbon emissions.
[0042] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.
Claims
1. A device for storing solar energy using crude oil storage tanks, characterized in that It includes a solar collector and a production tank. A heat medium tank wall heat exchanger and a heat medium tank wall heat exchanger are arranged at the lower part of the production tank. A heat-absorbing pipeline is fixedly connected between the pipeline outlet of the solar collector and the inlet of the heat medium tank wall heat exchanger. A heat-releasing pipeline is fixedly connected between the outlet of the heat medium tank wall heat exchanger and the inlet of the solar collector. The inlet of the heat medium tank wall heat exchanger is fixedly connected with a useful heat medium input pipeline, and the outlet of the heat medium tank wall heat exchanger is fixedly connected with a useful heat medium output pipeline.
2. The device for storing solar energy using crude oil storage tanks according to claim 1 is characterized in that It also includes a heat medium circulation device, which includes a heat medium circulation pump and an expansion tank. The heat medium circulation pump is fixedly installed on the heat release pipeline, a pressure output pipeline is fixedly connected between the heat absorption pipeline and the expansion tank, a heat medium thermometer is arranged on the heat absorption pipeline between the pressure output pipeline and the heat medium storage tank wall heat exchanger, and a heat medium regulating valve is fixedly installed on the heat absorption pipeline between the heat medium thermometer and the heat medium storage tank wall heat exchanger.
3. The device for storing solar energy using a crude oil storage tank according to claim 1 or 2, characterized in that A useful heat medium thermometer is arranged on the heat medium output pipeline, and a useful heat medium regulating valve is fixedly installed on the heat medium output pipeline between the heat medium thermometer and the heat medium storage tank wall heat exchanger.
4. The device for storing solar energy using a crude oil storage tank according to claim 1, 2 or 3, characterized in that A tank thermometer is arranged on the upper part of the production tank, a tank electric heating rod is arranged in the middle part of the production tank, one end of the tank electric heating rod extends out of the production tank, and the end extending out of the production tank is electrically connected to a green electricity power supply device.
5. The device for storing solar energy using crude oil storage tanks according to claim 4 is characterized in that It also includes a controller, and a heat medium circulation pump, a heat medium thermometer, a heat medium regulating valve, a storage tank thermometer, a green electricity power supply device, a heat medium thermometer and a heat medium regulating valve are all electrically connected to the controller.
6. The device for storing solar energy using a crude oil storage tank according to any one of claims 1 to 5, characterized in that Both the heat medium storage tank wall heat exchanger and the heat medium storage tank wall heat exchanger are coil heat exchangers.
7. A method for using the device for storing solar energy using a crude oil storage tank according to any one of claims 1 to 6, characterized in that The method is as follows: in the first step, after the solar collector collects the heat energy of the sun, the heat energy is transmitted to the heat absorber in the heat absorption pipeline; in the second step, the heat absorber carrying the heat energy is sent to the heat medium storage tank wall heat exchanger through the heat absorption pipeline to exchange heat with the energy storage crude oil in the production tank; in the third step, after the heat absorber exchanges heat with the energy storage crude oil, the temperature of the heat absorber decreases, and the temperature of the energy storage crude oil increases. The heat absorber after cooling is sent to the solar collector through the heat release pipeline to absorb heat energy again in a cycle, and the energy storage crude oil after heating continues to store heat energy; in the fourth step, the heat medium is sent to the heat medium storage tank wall heat exchanger through the heat medium input pipeline to exchange heat with the energy storage crude oil after heating in the production tank; in the fifth step, after the heat medium exchanges heat with the energy storage crude oil after heating, the temperature of the heat medium increases, and the temperature of the energy storage crude oil decreases. The heated heat medium is sent to the downstream process through the heat medium output pipeline, and the energy storage crude oil after cooling and the heat absorber carrying the heat energy are circulated and exchanged again.
8. The method for using the device for storing solar energy using a crude oil storage tank according to claim 7, characterized in that The production storage tank is one or more of the following: transfer station accident tank, produced water deoiling tank, water injection storage tank, and crude oil storage tank.
9. The method for using the device for storing solar energy using a crude oil storage tank according to claim 7 or 8, characterized in that In the second step, the temperature of the heat absorber carrying heat energy is 90°C to 150°C, the temperature of the production tank is 50°C to 100°C, and the temperature of the heat medium after heating is 35°C to 70°C.
10. The method for using the device for storing solar energy using a crude oil storage tank according to claim 7, 8 or 9, characterized in that When the temperature of the heat medium after heating is lower than 35°C, the electric heating rod of the storage tank is started to heat the energy storage crude oil in the production storage tank.