CO2 auxiliary heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device and method

Abstract

The invention discloses a CO2 auxiliary heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device and method, belongs to the technical field of oil and gas reservoir in-situ hydrogen production and CCUS, and solves the problems that in an existing method, a steam reforming process of organic matter, oxygen and water vapor is adopted, generation of CO2 gas cannot be avoided, and utilization of CO2 cannot be achieved. Connecting an experiment process, and debugging instrument equipment; reservoir temperature and pressure conditions are simulated; high-temperature CO2 is injected into the CO2 auxiliary heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, hydrogen is produced and collected, the hydrogen output is calculated, CO2 is injected again to reduce the temperature and pressure conditions of the reservoir, and the CO2 storage amount is calculated; according to the method, the collaborative effect of CO2 auxiliary heating reservoir in-situ hydrogen production and CO2 sequestration is evaluated by establishing an indoor physical model and an experimental method, the feasibility and advancement of the CO2 auxiliary heating reservoir in-situ hydrogen production and CO2 sequestration technology can be verified, and mine field application of the CO2 auxiliary heating reservoir in-situ hydrogen production and CO2 sequestration technology is promoted.

Description

Technical Field

[0001] The present invention belongs to the technical field of in-situ hydrogen production and CCUS in oil and gas reservoirs, and specifically relates to a device and method for in-situ hydrogen production and CO2 storage effect evaluation in a CO2-assisted heating reservoir. Background Art

[0002] Achieving the dual carbon goals requires two legs: one is carbon storage, and the other is carbon reduction. Carbon capture, utilization and storage (CCUS) technology is the only technical option to achieve negative carbon utilization of fossil energy and is an effective carbon storage measure. The development and utilization of new energy is an inevitable measure to reduce fossil energy consumption and low-carbon emission reduction. Hydrogen is considered to be the most promising clean energy in the 21st century. There are many studies on CCUS and hydrogen production, but there is currently a lack of mine application cases that combine the two technologies, or even indoor theoretical and simulation studies.

[0003] CO2 oil recovery and storage technology (CO2-EOR) has achieved success in general mine tests, and steam reforming hydrogen production has developed into green and low-carbon in-situ reservoir heating cracking hydrogen production. At present, researchers have carried out indoor experimental simulation and mine scheme design research on in-situ reservoir heating hydrogen production. For example, Chinese patents "202410254748.8-A method and device for in-situ coal supercritical water gasification hydrogen production in different layers", "202311803367.2-A method for in-situ hydrogen production in low-permeability oil and gas reservoirs", "202210287852.8-An air thermochemical oil and gas in-situ hydrogen production and reforming simulation system", "202311139025.5-A method suitable for in-situ hydrogen production in oil reservoirs" all disclose indoor experimental simulation and mine scheme design research, but the above-mentioned technologies require the reaction of oxygen and water, which will generate CO2, and cannot achieve the in-situ storage of associated gases such as CO2. Even if reinjection increases the cost, it cannot achieve the utilization of CO2.

[0004] Chinese patent "202310220285.9" discloses a gas reservoir in-situ conversion hydrogen production experimental simulation device and a method of use. The device can supply gas to the reactor through a gas source and simulate in-situ hydrogen production in the reactor, which can realize real-time online monitoring of the results and improve the accuracy of the simulation experiment. At the same time, by adjusting the connection status between multiple groups of reactors, accurate simulation of multi-stage in-situ hydrogen production and multi-well group coordinated hydrogen production processes of different types of gas reservoirs in actual production can be achieved. However, the existing device has the following problems:

[0005] (1) Its essence is still the steam reforming process of organic matter + oxygen + water vapor, which cannot avoid the generation of CO2 gas, let alone realize the utilization of CO2.

[0006] (2) This technical method cannot verify the feasibility of in-situ carbon storage and hydrogen production by indoor injection of high-temperature CO2 to preheat the reservoir and assist with electric / electromagnetic heating.

[0007] Chinese patent "202210955852.0" discloses a method for in-situ hydrogen production near the wellbore area using downhole electric heating. It heats the reservoir near the wellbore area by setting up an electric heating device and a temperature monitoring device downhole. When the natural gas in the reservoir passes through the formation near the wellbore area of ​​the production well, it mixes with the water vapor generated in situ under high temperature conditions, and a hydrogen production reaction occurs under the action of nanocatalysts on the rock surface, producing outputs including hydrogen and other components mainly composed of carbon dioxide. Finally, the produced hydrogen and other components are separated and the other components are injected back into the formation through adjacent injection wells. However, the existing methods have the following problems:

[0008] (1) Its essence is still the decomposition of organic matter and water vapor by heating, and the generation of CO2 gas cannot be avoided. In addition, this technology cannot achieve in-situ storage of associated gases such as CO2 through filtration membranes, and even reinjection increases costs.

[0009] (2) This technical method does not realize the feasibility evaluation of in-situ carbon storage and hydrogen production by indoor injection of high-temperature CO2 to preheat the reservoir and assist with electric / electromagnetic heating.

[0010] In response to the above problems, we proposed a device and method for in-situ hydrogen production and CO2 storage effect evaluation using CO2-assisted heating reservoirs. Summary of the invention

[0011] The purpose of the present invention is to address the shortcomings of the prior art and provide a CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device and method, which solves the problem that the existing method uses a steam reforming process of organic matter, oxygen, and water vapor, which cannot avoid the generation of CO2 gas and cannot realize the utilization of CO2.

[0012] The present invention is implemented in this way: a CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device comprising:

[0013] Electric heating model;

[0014] Electromagnetic heating model;

[0015] The electromagnetic heating model includes:

[0016] Control and monitoring module;

[0017] An electromagnetic heating mechanism, the electromagnetic heating mechanism comprising an electromagnetic wave generating chamber, an electromagnetic wave generator, and a waveguide tube. The electromagnetic wave generator is installed in the electromagnetic wave generating chamber, the electromagnetic wave generator is electrically connected to the control and monitoring module through a control connection, and a waveguide tube is installed on one side of the electromagnetic wave generating chamber, the waveguide tube is used to propagate the electromagnetic wave generated by the electromagnetic wave generator;

[0018] A simulated reaction chamber, wherein a reaction chamber is fixedly installed in the simulated reaction chamber, the reaction chamber is filled with saturated oil sand, and a second valve is installed on the top of the reaction chamber, and the second valve is used to control the opening and closing of the reaction chamber;

[0019] A hydrogen filter membrane is detachably installed in the reaction chamber, and the hydrogen filter membrane is used to filter the generated hydrogen;

[0020] A gas pipeline connected to the reaction chamber, in which a gas flow meter is installed, and the gas flow meter is used to record the flow of the gas;

[0021] A hydrogen collecting bottle, which is connected to the gas pipeline and is used to collect the generated hydrogen;

[0022] A first valve, wherein the first valve is connected to one end of the reaction chamber, an end of the first valve away from the reaction chamber is connected to a first pressure gauge, and the first pressure gauge is electrically connected to the control and monitoring module through a control wiring;

[0023] A sealing gasket is installed at the bottom of the simulated reaction chamber, and the sealing gasket is sleeved on the outer side of the lower end of the reaction chamber to seal and protect the reaction chamber;

[0024] A third valve is arranged on one side of the first pressure gauge, the third valve is connected to the first pressure gauge, and a side of the third valve away from the first pressure gauge is connected to a piston container;

[0025] A piston container, the piston container is used to contain carbon dioxide gas, one side of the piston container is connected to the ISCO injection pump, and the piston container is fixedly installed in the heating device;

[0026] Infrared thermometer, fixedly installed on the side wall of the simulated reaction chamber, is used to measure the temperature of the reaction chamber in real time.

[0027] The argon pressurizing device is used to blow argon into the reaction chamber. A fourth valve is connected to one side of the argon pressurizing device. A second pressure gauge is connected to the side of the fourth valve away from the argon pressurizing device. The second pressure gauge is used to detect the pressure of the pumped argon. The gas outlet end of the argon pressurizing device is connected to the reaction chamber.

[0028] The electric heating model includes:

[0029] Control and monitoring module;

[0030] An electric heating mechanism, the electric heating mechanism comprising an electric heating control device, an electric heating conduction device, and an electric heating component, the electric heating control device is electrically connected to the control and monitoring module through a control wiring, and the electric heating component is fixedly installed in the simulation reaction chamber;

[0031] A simulated reaction chamber, wherein a reaction chamber is fixedly installed in the simulated reaction chamber, the reaction chamber is filled with saturated oil sand, and a second valve is installed on the top of the reaction chamber, and the second valve is used to control the opening and closing of the reaction chamber;

[0032] A hydrogen filter membrane is detachably installed in the reaction chamber, and the hydrogen filter membrane is used to filter the generated hydrogen;

[0033] A gas pipeline connected to the reaction chamber, in which a gas flow meter is installed, and the gas flow meter is used to record the flow of the gas;

[0034] A hydrogen collecting bottle, which is connected to the gas pipeline and is used to collect the generated hydrogen;

[0035] A first valve, wherein the first valve is connected to one end of the reaction chamber, an end of the first valve away from the reaction chamber is connected to a first pressure gauge, and the first pressure gauge is electrically connected to the control and monitoring module through a control wiring;

[0036] A sealing gasket is installed at the bottom of the simulated reaction chamber, and the sealing gasket is sleeved on the outer side of the lower end of the reaction chamber to seal and protect the reaction chamber;

[0037] A third valve is arranged on one side of the first pressure gauge, the third valve is connected to the first pressure gauge, and a side of the third valve away from the first pressure gauge is connected to a piston container;

[0038] A piston container, the piston container is used to contain carbon dioxide gas, one side of the piston container is connected to the ISCO injection pump, and the piston container is fixedly installed in the heating device;

[0039] Infrared thermometer, fixedly installed on the side wall of the simulated reaction chamber, is used to measure the temperature of the reaction chamber in real time.

[0040] The argon pressurizing device is used to blow argon into the reaction chamber. A fourth valve is connected to one side of the argon pressurizing device. A second pressure gauge is connected to the side of the fourth valve away from the argon pressurizing device. The second pressure gauge is used to detect the pressure of the pumped argon. The gas outlet end of the argon pressurizing device is connected to the reaction chamber.

[0041] The reaction chamber comprises:

[0042] A cabin body, the cabin body is fixedly installed in the simulation reaction chamber;

[0043] A hydrogen output port is arranged on the top of the cabin, and the hydrogen output port is used to release the produced hydrogen;

[0044] A carbon dioxide injection port is arranged at the bottom of the cabin, and the carbon dioxide injection port is connected to the first valve;

[0045] An upper end cover, the upper end cover being detachably mounted on the upper end of the cabin body;

[0046] A lower end cover, the lower end cover being detachably mounted on the lower end of the cabin body;

[0047] A metal porous medium partition is fixedly installed in the cabin, and the metal porous medium partition is used to slow down the flow rate of carbon dioxide. A hydrogen reaction pool is arranged on the upper side of the metal porous medium partition, and a carbon dioxide preheating pool is arranged on the lower side of the metal porous medium partition.

[0048] On the other hand, the present invention also provides a method for evaluating the effect of in-situ hydrogen production and CO2 storage in a CO2-assisted heating reservoir, the method specifically comprising:

[0049] S10, filling the reaction chamber;

[0050] S20, connect the experimental process and debug the instruments and equipment;

[0051] S30, simulated reservoir temperature and pressure conditions;

[0052] S40, injecting high-temperature CO2 into the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device to preheat the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, wherein the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device is an electric heating model or an electromagnetic heating model;

[0053] S50, hydrogen production using CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device;

[0054] S60, collecting hydrogen and calculating the hydrogen output;

[0055] S70, injecting CO2 again to reduce the temperature and pressure conditions of the reservoir, and calculating the CO2 storage capacity;

[0056] S80, close the equipment cleaning experiment process.

[0057] The method for filling the reaction chamber comprises:

[0058] Obtain the natural core or outcrop of the target reservoir and crush it, mix it evenly with crude oil, open the upper end cover and fill it into the hydrogen reaction pool and close the upper end cover, then open the lower end cover and fill quartz sand into the carbon dioxide preheating pool, and then close the lower end cover.

[0059] The method for simulating reservoir temperature and pressure conditions specifically comprises:

[0060] Open the first valve, the third valve and the fourth valve, close the second valve, and simultaneously start the ISCO injection pump and the argon pressurizing device, inject gas into the hydrogen reaction pool and the carbon dioxide preheating pool until the preset pressure is reached, close the first valve, the third valve and the fourth valve, heat the simulated reaction chamber to make its temperature reach the reservoir temperature, let it stand for more than 2 hours to make the temperature and pressure in the reaction chamber uniform, and record the stable pressure P1 and stable temperature T1.

[0061] The method of injecting high-temperature CO2 into the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device specifically comprises:

[0062] Turn on the heating device to heat the CO2 in the piston container to the preset temperature, open the first valve and the third valve, turn on the ISCO injection pump to inject the high-temperature CO2 in the piston container into the carbon dioxide preheating pool, monitor the temperature of the infrared thermometer in real time, and close the ISCO injection pump and the third valve when the pressure of the first pressure gauge reaches the target reservoir pressure, and record the CO2 injection volume V1 and the pressure P2 of the first pressure gauge.

[0063] The method for collecting hydrogen and calculating the hydrogen output comprises:

[0064] The gas in the reaction chamber is filtered through a hydrogen filter membrane to remove other gases to obtain a pure hydrogen flow, and the gas flow is recorded by a gas flow meter. Finally, the hydrogen is collected in a hydrogen collection bottle. When the monitoring value of the gas flow meter drops to a preset value, the second valve is closed and the total hydrogen production is recorded.

[0065] The method for calculating the CO2 storage amount specifically includes:

[0066] Close the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, and after the temperature in the reaction chamber returns to temperature T1, open the third valve and the ISCO injection pump, and continue to inject the CO2 gas in the piston container into the carbon dioxide preheating pool. The high-pressure CO2 will enter the hydrogen reaction pool through the metal porous medium barrier, fill the pore space after hydrogen generation and production, and replenish the pressure in the hydrogen reaction pool. Stop the injection after the pressure of the second pressure gauge returns to pressure P2, close the ISCO injection pump and the third valve, and record the injected CO2 volume V2. The CO2 storage amount is V1+V2.

[0067] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0068] (1) The present invention evaluates the synergistic effect of in-situ hydrogen production and CO2 storage by establishing an indoor physical model and experimental method, thereby verifying the feasibility and advancement of the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage technology and promoting its application in mines.

[0069] (2) The present invention adopts the method of dividing the reaction chamber to restore the actual situation of the reservoir as much as possible, so as to obtain the accurate effect of hydrogen production and CO2 storage of the above technology.

[0070] (3) The present invention can quantitatively obtain the influence of different factors (target reservoir characteristics, development stage, preheating temperature, etc.) on the effect of the technology, provide support for parameter optimization of the technology, and promote its application in mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is a schematic diagram of the implementation flow of the CO2 assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation method provided by the present invention.

[0072] Figure 2 It is a structural schematic diagram of the electromagnetic heating mechanism provided by the present invention.

[0073] Figure 3 It is a structural schematic diagram of the electric heating mechanism provided by the present invention.

[0074] Figure 4 It is a structural schematic diagram of the reaction chamber provided by the present invention.

[0075] Figure 5 It is a comparison diagram of the hydrogen production curves of Examples 1-3 of the present invention.

[0076] In the figure: 1. Control and monitoring module; 2. Electromagnetic heating mechanism; 2-1. Electromagnetic wave generating chamber; 2-2. Electromagnetic wave generator; 2-3. Waveguide; 3. Electric heating mechanism; 3-1. Electric heating control device; 3-2. Electric heating conduction device; 3-3. Electric heating assembly; 5. Simulated reaction chamber; 6. Reaction chamber; 6-1. Chamber; 6-2. Hydrogen output port; 6-3. Carbon dioxide injection port; 6-4. Hydrogen reaction cell; 6-5. Metal porous medium barrier; 6-6. Dioxide Carbon preheating tank; 6-7, upper end cover; 6-8, lower end cover; 7, sealing gasket; 8, hydrogen filter membrane; 9, control wiring; 10, first valve; 11, first pressure gauge; 12, second valve; 13, third valve; 14, infrared thermometer; 15, gas flow meter; 16, gas pipeline; 17, hydrogen collection bottle; 18, piston container; 19, heating device; 20, ISCO injection pump; 21, fourth valve; 22, argon pressurizing device; 23, second pressure gauge. DETAILED DESCRIPTION

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0078] The existing method adopts the steam reforming process of organic matter, oxygen and water vapor, which cannot avoid the generation of CO2 gas, let alone realize the utilization of CO2. In view of the above problems, we propose a device and method for evaluating the in-situ hydrogen production and CO2 storage effect of CO2-assisted heating reservoir. The present invention evaluates the synergistic effect of in-situ hydrogen production and CO2 storage of CO2-assisted heating reservoir by establishing an indoor physical model and experimental methods. It can verify the feasibility and advancement of in-situ hydrogen production and CO2 storage technology of CO2-assisted heating reservoir, and promote its application in mines.

[0079] The embodiment of the present invention provides a method for evaluating the effect of in-situ hydrogen production and CO2 storage by CO2-assisted heating of a reservoir. Figure 1 The schematic diagram of the implementation process of the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation method is shown. The CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation method specifically includes:

[0080] S10, filling the reaction chamber 6;

[0081] In this embodiment, the method for filling the reaction chamber 6 includes: obtaining the natural core or outcrop of the target reservoir and crushing it, mixing it with crude oil evenly, opening the upper end cover 6-7 to fill it into the hydrogen reaction pool 6-4 and closing the upper end cover 6-7, then opening the lower end cover 6-8 to fill quartz sand into the carbon dioxide preheating pool 6-6, and then closing the lower end cover 6-8.

[0082] It should be noted that during the filling process of the reaction chamber 6, a catalyst may be added to reduce the reaction temperature (including but not limited to iron ions, SiC, etc.).

[0083] When filling the core sand and quartz sand, compact them as much as possible to avoid a large amount of empty space during the subsequent pressurization process;

[0084] In particular, natural cores can be saturated with oil and displaced with CO2 before being crushed and filled to more realistically restore the reservoir conditions. However, due to the large volume of the hydrogen reaction pool 6-4, this method is feasible but not recommended. The degree of core crushing can also be used to simulate the effect of different fracture control degrees on hydrogen production.

[0085] S20, connect the experimental process and debug the instruments and equipment;

[0086] S30, simulated reservoir temperature and pressure conditions;

[0087] In this embodiment, the method for simulating reservoir temperature and pressure conditions specifically includes:

[0088] Open the first valve 10, the third valve 13 and the fourth valve 21, close the second valve 12, and simultaneously open the ISCO injection pump 20 and the argon pressurizing device 22, inject gas into the hydrogen reaction pool 6-4 and the carbon dioxide preheating pool 6-6 until the preset pressure is reached (designed according to the bottom hole flow pressure to simulate the pressure deficit during the formation development process), close the first valve 10, the third valve 13 and the fourth valve 21, heat the simulated reaction chamber 5 to make its temperature reach the reservoir temperature (in order to ensure experimental safety and heating space, generally not higher than 100°C), let it stand for more than 2 hours to make the temperature and pressure in the reaction chamber 6 uniform, and record the stable pressure P1 and stable temperature T1.

[0089] It should be noted that the pressure rise rate in the hydrogen reaction pool 6-4 and the carbon dioxide preheating pool 6-6 should be kept the same during the gas injection process, that is, the pressures of the first pressure gauge 11 and the second pressure gauge 23 should be close to each other, so as to prevent CO2 or argon from passing through the metal porous medium barrier 6-5. In simple terms, the argon pressurizing device 22 is two piston containers (similar to two syringes) that continuously draw air from one piston container and press it into the second piston container through an air compressor, and finally obtain a high-pressure piston container filled with argon (this process is similar to filling a gas cylinder, but the pressure of the gas cylinder generally does not reach the experimental pressure, so the gas in the gas cylinder needs to be passed through a pressurizing device to form high-pressure argon) Working parameters: The pressure range is generally not less than 40MPa.

[0090] S40, injecting high-temperature CO2 into the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device to preheat the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, wherein the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device is an electric heating model or an electromagnetic heating model.

[0091] On the other hand, an embodiment of the present invention further provides a CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device comprising:

[0092] Electric heating model;

[0093] Electromagnetic heating model;

[0094] It should be noted that if Figure 2 As shown, the electromagnetic heating model includes:

[0095] Control and monitoring module 1;

[0096] The electromagnetic heating mechanism 2 comprises an electromagnetic wave generating chamber 2-1, an electromagnetic wave generator 2-2, and a waveguide tube 2-3. The electromagnetic wave generating chamber 2-1 is provided with the electromagnetic wave generator 2-2, and the electromagnetic wave generator 2-2 is electrically connected to the control and monitoring module 1 through a control connection 9. A waveguide tube 2-3 is provided on one side of the electromagnetic wave generating chamber 2-1, and the waveguide tube 2-3 is used to propagate the electromagnetic wave generated by the electromagnetic wave generator 2-2.

[0097] A simulated reaction chamber 5, wherein a reaction chamber 6 is fixedly installed in the simulated reaction chamber 5, the reaction chamber 6 is filled with saturated oil sand, and a second valve 12 is installed on the top of the reaction chamber 6, and the second valve 12 is used to control the opening and closing of the reaction chamber 6;

[0098] A hydrogen filter membrane 8 is detachably mounted in the reaction chamber 6, and the hydrogen filter membrane 8 is used to filter the generated hydrogen;

[0099] A gas pipeline 16 communicated with the reaction chamber 6, wherein a gas flow meter 15 is installed in the gas pipeline 16, and the gas flow meter 15 is used to record the flow of the gas;

[0100] A hydrogen collecting bottle 17, which is connected to the gas pipeline 16 and is used to collect the generated hydrogen;

[0101] A first valve 10, wherein the first valve 10 is connected to one end of the reaction chamber 6, and an end of the first valve 10 away from the reaction chamber 6 is connected to a first pressure gauge 11, and the first pressure gauge 11 is electrically connected to the control and monitoring module 1 through the control connection 9;

[0102] A sealing gasket 7 is installed at the bottom of the simulation reaction chamber 5. The sealing gasket 7 is sleeved on the outer side of the lower end of the reaction chamber 6 to seal and protect the reaction chamber 6;

[0103] A third valve 13 is disposed on one side of the first pressure gauge 11. The third valve 13 is in communication with the first pressure gauge 11. A side of the third valve 13 away from the first pressure gauge 11 is in communication with a piston container 18.

[0104] A piston container 18, the piston container 18 is used to contain carbon dioxide gas, one side of the piston container 18 is connected to the ISCO injection pump 20, and the piston container 18 is fixedly installed in the heating device 19;

[0105] The infrared thermometer 14 is fixedly mounted on the side wall of the simulated reaction chamber 5. The infrared thermometer 14 is used to measure the temperature of the reaction chamber 6 in real time.

[0106] The argon pressurizing device 22 is used to blow argon into the reaction chamber 6. A fourth valve 21 is connected to one side of the argon pressurizing device 22. A second pressure gauge 23 is connected to the side of the fourth valve 21 away from the argon pressurizing device 22. The second pressure gauge 23 is used to detect the pressure of the pumped argon. The outlet end of the argon pressurizing device 22 is connected to the reaction chamber 6.

[0107] In the embodiment of the present invention, Figure 3 As shown, the electric heating model includes:

[0108] Control and monitoring module 1;

[0109] The electric heating mechanism 3 includes an electric heating control device 3-1, an electric heating conduction device 3-2, and an electric heating component 3-3. The electric heating control device 3-1 is electrically connected to the control and monitoring module 1 through a control connection 9, and the electric heating component 3-3 is fixedly installed in the simulation reaction chamber 5; the electric heating component adopts basic resistance heating, the electric heating control device 3-1 mainly controls the input power, the electric heating conduction device 3-2 is mainly a wire, and the electric heating component 3-3 is a heating sleeve wrapped with a ring-shaped heating coil, and its heating temperature range is above 1000°C.

[0110] A simulated reaction chamber 5, wherein a reaction chamber 6 is fixedly installed in the simulated reaction chamber 5, the reaction chamber 6 is filled with saturated oil sand, and a second valve 12 is installed on the top of the reaction chamber 6, and the second valve 12 is used to control the opening and closing of the reaction chamber 6;

[0111] In this embodiment, the reaction chamber 6 is made of stainless steel, with an inner diameter of 5-10 cm and a length of 20-30 cm (not specifically limited, the present application may be 25 cm, with 10 cm for each of the upper and lower chambers and 5 cm for the metal porous medium in the middle), with a temperature resistance of 800°C and a pressure resistance of 100 MPa.

[0112] A hydrogen filter membrane 8 is detachably mounted in the reaction chamber 6, and the hydrogen filter membrane 8 is used to filter the generated hydrogen;

[0113] A gas pipeline 16 communicated with the reaction chamber 6, wherein a gas flow meter 15 is installed in the gas pipeline 16, and the gas flow meter 15 is used to record the flow of the gas;

[0114] A hydrogen collecting bottle 17, which is connected to the gas pipeline 16 and is used to collect the generated hydrogen;

[0115] A first valve 10, wherein the first valve 10 is connected to one end of the reaction chamber 6, and an end of the first valve 10 away from the reaction chamber 6 is connected to a first pressure gauge 11, and the first pressure gauge 11 is electrically connected to the control and monitoring module 1 through the control connection 9;

[0116] A sealing gasket 7 is installed at the bottom of the simulation reaction chamber 5. The sealing gasket 7 is sleeved on the outer side of the lower end of the reaction chamber 6 to seal and protect the reaction chamber 6;

[0117] A third valve 13 is disposed on one side of the first pressure gauge 11. The third valve 13 is in communication with the first pressure gauge 11. A side of the third valve 13 away from the first pressure gauge 11 is in communication with a piston container 18.

[0118] A piston container 18, the piston container 18 is used to contain carbon dioxide gas, one side of the piston container 18 is connected to the ISCO injection pump 20, and the piston container 18 is fixedly installed in the heating device 19;

[0119] The infrared thermometer 14 is fixedly mounted on the side wall of the simulated reaction chamber 5. The infrared thermometer 14 is used to measure the temperature of the reaction chamber 6 in real time.

[0120] The argon pressurizing device 22 is used to blow argon into the reaction chamber 6. A fourth valve 21 is connected to one side of the argon pressurizing device 22. A second pressure gauge 23 is connected to the side of the fourth valve 21 away from the argon pressurizing device 22. The second pressure gauge 23 is used to detect the pressure of the pumped argon. The outlet end of the argon pressurizing device 22 is connected to the reaction chamber 6.

[0121] like Figure 4 As shown, the reaction chamber 6 comprises:

[0122] A cabin 6-1, wherein the cabin 6-1 is fixedly installed in the simulation reaction chamber 5;

[0123] A hydrogen output port 6-2 is provided on the top of the cabin 6-1, and the hydrogen output port 6-2 is used to release the produced hydrogen;

[0124] A carbon dioxide injection port 6-3 is provided at the bottom of the cabin 6-1, and the carbon dioxide injection port 6-3 is connected to the first valve 10;

[0125] An upper end cover 6-7, wherein the upper end cover 6-7 is detachably mounted on the upper end of the cabin body 6-1;

[0126] A lower end cover 6-8, wherein the lower end cover 6-8 is detachably mounted on the lower end of the cabin body 6-1;

[0127] A metal porous medium barrier 6-5 is fixedly installed in the cabin 6-1, and the metal porous medium barrier 6-5 is used to slow down the flow rate of carbon dioxide. A hydrogen reaction pool 6-4 is arranged on the upper side of the metal porous medium barrier 6-5, and a carbon dioxide preheating pool 6-6 is arranged on the lower side of the metal porous medium barrier 6-5.

[0128] In this embodiment, the metal porous medium interlayer 6-5 is a foam metal (including but not limited to foam aluminum, foam iron-chromium-aluminum, foam copper, etc.), which is made by adding titanium hydride as a viscosity enhancer and foaming agent to a molten metal or alloy and stirring. In this embodiment, the metal porous medium interlayer 6-5 uses modified foam aluminum, which has a temperature resistance of more than 1000°C and a density of 0.4-0.6g / cm3. Its microstructure is a spatial reticular structure, with a pore size ranging from tens to hundreds of microns and a porosity of about 0.8.

[0129] In this embodiment, the method of injecting high-temperature CO2 into the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device specifically includes:

[0130] The heating device 19 is turned on to heat the CO2 in the piston container 18 to a preset temperature, the first valve 10 and the third valve 13 are opened, and the ISCO injection pump 20 is turned on to inject the high-temperature CO2 in the piston container 18 into the carbon dioxide preheating pool 6-6. The temperature of the infrared thermometer 14 is monitored in real time. When the pressure of the first pressure gauge 11 reaches the target reservoir pressure, the ISCO injection pump 20 and the third valve 13 are closed, and the CO2 injection amount V1 (this part of the sealed CO2 is the CO2 sealed to supplement the formation energy) and the pressure P2 of the first pressure gauge 11 are recorded.

[0131] It should be noted that in order to ensure the safety of the experiment, the experimental pressure can be set at a lower level under the premise of being close to the reservoir, for example, the pressure is not higher than 50 MPa (this value can be changed according to the actual situation).

[0132] S50, hydrogen production using CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device;

[0133] In this embodiment, when the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device is heated, for electromagnetic heating, such as Figure 2 As shown, the electromagnetic wave generator 2-2 is turned on, and the electromagnetic wave propagates through the electromagnetic wave generating chamber 2-1 and the waveguide 2-3 to the simulation reaction chamber 5 and acts on the reaction chamber 6 to continue heating it. When the temperature reaches the preset temperature, the electromagnetic wave generator 2-2 is turned off.

[0134] For electric heating, Figure 3 As shown, the electric heating control device 3-1 is turned on, the electric heating control device 3-1 acts on the electric heating component 3-3, the electric heating component 3-3 acts on the reaction chamber 6 to continue heating it, the second valve 12 is opened, the readings of the infrared thermometer 14 and the pressure gauge are monitored, and the electric heating control device 3-1 is turned off after the temperature reaches the preset temperature.

[0135] S60, collecting hydrogen and calculating the hydrogen output;

[0136] The method for collecting hydrogen and calculating the hydrogen output comprises:

[0137] The gas in the reaction chamber 6 is filtered out by the hydrogen filter membrane 8 to remove other gases to obtain a pure hydrogen flow, and the gas flow is recorded by the gas flow meter 15. Finally, the hydrogen is collected in the hydrogen collection bottle 17. When the monitoring value of the gas flow meter 15 decreases to a preset value, the second valve 12 is closed and the total hydrogen production is recorded.

[0138] S70, injecting CO2 again to reduce the temperature and pressure conditions of the reservoir, and calculating the CO2 storage capacity;

[0139] The method for calculating the CO2 storage amount specifically includes:

[0140] Close the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, and after the temperature in the reaction chamber 6 returns to temperature T1, open the third valve 13 and the ISCO injection pump 20, and continue to inject the CO2 gas (T1 temperature) in the piston container 18 into the carbon dioxide preheating pool 6-6. The high-pressure CO2 will enter the hydrogen reaction pool 6-4 through the metal porous medium barrier 6-5, fill the pore space after the hydrogen is generated and produced, and replenish the pressure in the hydrogen reaction pool 6-4. After the pressure of the second pressure gauge 23 returns to pressure P2, stop the injection, close the ISCO injection pump 20 and the third valve 13, and record the injected CO2 volume V2 (the volume of CO2 sealed by CO2 replacing the hydrogen production space), then the CO2 storage amount is V1+V2.

[0141] S80, close the equipment cleaning experiment process.

[0142] Example 1

[0143] The embodiment of the present invention provides a method for evaluating the effect of in-situ hydrogen production and CO2 storage in a CO2-assisted heating reservoir, and the method comprises:

[0144] S10, obtaining and crushing the natural core of the shale reservoir in the Ordos Basin, mixing it evenly with 20g of crude oil, opening the upper end cover 6-7 to fill it into the hydrogen reaction pool 6-4 and closing the upper end cover 6-7, opening the lower end cover 6-8 and filling quartz sand into the carbon dioxide preheating pool 6-6 and then closing the lower end cover 6-8;

[0145] S20, debug the instruments and equipment according to the electromagnetic heating model connection experimental process;

[0146] S30, open the first valve 10, the third valve 13 and the fourth valve 21, close the second valve 12, and simultaneously open the ISCO injection pump 20 and the argon pressurizing device 22, inject gas into the hydrogen reaction pool 6-4 and the carbon dioxide preheating pool 6-6 until the pressure reaches 10MPa, close all valves, heat the simulated reaction chamber 5 to a temperature of 70°C, let it stand for more than 2 hours to make the temperature and pressure in the reaction chamber 6 uniform, and record the stable pressure P1 and stable temperature T1;

[0147] S40, start the heating device 19 to heat the CO2 in the piston container 18 to 200°C, open the first valve 10 and the third valve 13, start the ISCO injection pump 20 to inject the high-temperature CO2 in the piston container 18 into the carbon dioxide preheating pool 6-6, monitor the temperature of the infrared thermometer 14 in real time, close the ISCO injection pump 20 and the third valve 13 when the pressure of the first pressure gauge 11 reaches 30MPa, and record the CO2 injection amount V1 (this part of the sealed CO2 is the CO2 sealed to supplement the formation energy) and the pressure P2 of the first pressure gauge 11;

[0148] S50, turn on the electromagnetic wave generator 2-2, the electromagnetic wave propagates to the simulation reaction chamber 5 through the electromagnetic wave generating chamber 2-1 and the waveguide 2-3 and acts on the reaction chamber 6 to continue heating it, open the second valve 12, monitor the readings of the infrared thermometer 14 and the first pressure gauge 11, and turn off the electromagnetic generator after the temperature reaches the preset temperature;

[0149] S60, the gas in the reaction chamber 6 is filtered out by the hydrogen filter membrane 8 to obtain a pure hydrogen flow, and the gas flow is recorded by the gas flow meter 15, and the hydrogen is finally collected in the hydrogen collection bottle 17. When the value monitored by the gas flow meter 15 decreases to a certain level, the second valve 12 is closed, and the total amount of hydrogen generated is recorded;

[0150] S70, turn off the electromagnetic generator, and after the temperature in the reaction chamber 6 returns to the temperature T1, open the third valve 13 and the ISCO injection pump 20, and continue to inject the CO2 gas (T1 temperature) in the carbon dioxide piston container 18 into the carbon dioxide preheating pool 6-6. The high-pressure CO2 will enter the hydrogen reaction pool 6-4 through the metal porous medium barrier 6-5, fill the pore space after the hydrogen is generated and produced, and replenish the pressure in the hydrogen reaction pool 6-4. After the pressure of the second pressure gauge 23 returns to the pressure P2, stop the injection, turn off the ISCO injection pump 20 and the third valve 13, and record the injected CO2 volume V2 (the volume of CO2 sealed in the hydrogen generation space replaced by CO2), then the CO2 storage amount is V1+V2;

[0151] S80, turn off all equipment, wait for the device to cool down and then disassemble and clean the experimental process.

[0152] Example 2

[0153] The embodiment of the present invention provides a method for evaluating the effect of in-situ hydrogen production and CO2 storage in a CO2-assisted heating reservoir, and the method comprises:

[0154] S10, obtaining and crushing the natural core of the shale reservoir in the Ordos Basin, mixing it evenly with 20g of crude oil, opening the upper end cover 6-7 to fill it into the hydrogen reaction pool 6-4 and closing the upper end cover 6-7, opening the lower end cover 6-8 and filling quartz sand into the carbon dioxide preheating pool 6-6 and then closing the lower end cover 6-8;

[0155] S20, debug the instruments and equipment according to the electromagnetic heating model connection experimental process;

[0156] S30, open the first valve 10, the third valve 13 and the fourth valve 21, close the second valve 12, and simultaneously open the ISCO injection pump 20 and the argon pressurizing device 22, inject gas into the hydrogen reaction pool 6-4 and the carbon dioxide preheating pool 6-6 until the pressure reaches 10MPa, close all valves, heat the simulated reaction chamber 5 to a temperature of 70°C, let it stand for more than 2 hours to make the temperature and pressure in the reaction chamber 6 uniform, and record the stable pressure P1 and stable temperature T1;

[0157] S40, start the heating device 19 to heat the CO2 in the piston container 18 to 200°C, open the first valve 10 and the third valve 13, start the ISCO injection pump 20 to inject the high-temperature CO2 in the piston container 18 into the carbon dioxide preheating pool 6-6, monitor the temperature of the infrared thermometer 14 in real time, close the ISCO injection pump 20 and the third valve 13 when the pressure of the first pressure gauge 11 reaches 40MPa, and record the CO2 injection amount V1 (this part of the sealed CO2 is the CO2 sealed to supplement the formation energy) and the pressure P2 of the first pressure gauge 11;

[0158] S50, turn on the electromagnetic wave generator 2-2, the electromagnetic wave propagates to the simulation reaction chamber 5 through the electromagnetic wave generating chamber 2-1 and the waveguide 2-3 and acts on the reaction chamber 6 to continue heating it, open the second valve 12, monitor the readings of the infrared thermometer 14 and the first pressure gauge 11, and turn off the electromagnetic generator after the temperature reaches the preset temperature;

[0159] S60, the gas in the reaction chamber 6 is filtered out by the hydrogen filter membrane 8 to obtain a pure hydrogen flow, and the gas flow is recorded by the gas flow meter 15, and the hydrogen is finally collected in the hydrogen collection bottle 17. When the value monitored by the gas flow meter 15 decreases to a certain level, the second valve 12 is closed, and the total amount of hydrogen generated is recorded;

[0160] S70, turn off the electromagnetic generator, and after the temperature in the reaction chamber 6 returns to the temperature T1, open the third valve 13 and the ISCO injection pump 20, and continue to inject the CO2 gas (T1 temperature) in the carbon dioxide piston container 18 into the carbon dioxide preheating pool 6-6. The high-pressure CO2 will enter the hydrogen reaction pool 6-4 through the metal porous medium barrier 6-5, fill the pore space after the hydrogen is generated and produced, and replenish the pressure in the hydrogen reaction pool 6-4. After the pressure of the second pressure gauge 23 returns to the pressure P2, stop the injection, turn off the ISCO injection pump 20 and the third valve 13, and record the injected CO2 volume V2 (the volume of CO2 sealed in the hydrogen generation space replaced by CO2), then the CO2 storage amount is V1+V2;

[0161] S80, turn off all equipment, wait for the device to cool down and then disassemble and clean the experimental process.

[0162] Example 3

[0163] The embodiment of the present invention provides a method for evaluating the effect of in-situ hydrogen production and CO2 storage in a CO2-assisted heating reservoir, and the method comprises:

[0164] S10, obtaining a natural core of the shale reservoir in the Ordos Basin and crushing it, mixing it evenly with 30g of crude oil, opening the upper end cover 6-7 to fill it into the hydrogen reaction pool 6-4 and closing the upper end cover 6-7, opening the lower end cover 6-8 and filling quartz sand into the carbon dioxide preheating pool 6-6 and then closing the lower end cover 6-8;

[0165] S20, debug the instruments and equipment according to the electromagnetic heating model connection experimental process;

[0166] S30, open the first valve 10, the third valve 13 and the fourth valve 21, close the second valve 12, and simultaneously open the ISCO injection pump 20 and the argon pressurizing device 22, inject gas into the hydrogen reaction pool 6-4 and the carbon dioxide preheating pool 6-6 until the pressure reaches 10MPa, close all valves, heat the simulated reaction chamber 5 to a temperature of 70°C, let it stand for more than 2 hours to make the temperature and pressure in the reaction chamber 6 uniform, and record the stable pressure P1 and stable temperature T1;

[0167] S40, start the heating device 19 to heat the CO2 in the piston container 18 to 200°C, open the first valve 10 and the third valve 13, start the ISCO injection pump 20 to inject the high-temperature CO2 in the piston container 18 into the carbon dioxide preheating pool 6-6, monitor the temperature of the infrared thermometer 14 in real time, close the ISCO injection pump 20 and the third valve 13 when the pressure of the first pressure gauge 11 reaches 30MPa, and record the CO2 injection amount V1 (this part of the sealed CO2 is the CO2 sealed to supplement the formation energy) and the pressure P2 of the first pressure gauge 11;

[0168] S50, turn on the electromagnetic wave generator 2-2, the electromagnetic wave propagates to the simulation reaction chamber 5 through the electromagnetic wave generating chamber 2-1 and the waveguide 2-3 and acts on the reaction chamber 6 to continue heating it, open the second valve 12, monitor the readings of the infrared thermometer 14 and the first pressure gauge 11, and turn off the electromagnetic generator after the temperature reaches the preset temperature;

[0169] S60, the gas in the reaction chamber 6 is filtered out by the hydrogen filter membrane 8 to obtain a pure hydrogen flow, and the gas flow is recorded by the gas flow meter 15, and the hydrogen is finally collected in the hydrogen collection bottle 17. When the value monitored by the gas flow meter 15 decreases to a certain level, the second valve 12 is closed, and the total amount of hydrogen generated is recorded;

[0170] S70, turn off the electromagnetic generator, and after the temperature in the reaction chamber 6 returns to the temperature T1, open the third valve 13 and the ISCO injection pump 20, and continue to inject the CO2 gas (T1 temperature) in the carbon dioxide piston container 18 into the carbon dioxide preheating pool 6-6. The high-pressure CO2 will enter the hydrogen reaction pool 6-4 through the metal porous medium barrier 6-5, fill the pore space after the hydrogen is generated and produced, and replenish the pressure in the hydrogen reaction pool 6-4. After the pressure of the second pressure gauge 23 returns to the pressure P2, stop the injection, turn off the ISCO injection pump 20 and the third valve 13, and record the injected CO2 volume V2 (the volume of CO2 sealed in the hydrogen generation space replaced by CO2), then the CO2 storage amount is V1+V2;

[0171] S80, turn off all equipment, wait for the device to cool down and then disassemble and clean the experimental process.

[0172] It should be noted that Example 1 and Example 2 compare the effect of CO2 injection pressure (i.e., reservoir pressure) on hydrogen production and CO2 storage: it can be found that after the injection pressure is increased from 30MPa to 40MPa, the initial hydrogen production time is delayed from 5-10min to 10-15min, and the final hydrogen production is slightly reduced. The CO2 storage capacity is increased from 30.6 (supercritical volume) mL to 34.6mL, and the increased storage capacity mainly comes from the preheating process (i.e., V1).

[0173] Example 1 and Example 3 compare the effect of crude oil addition on hydrogen production and CO2 storage: as the oil content decreases, the time to start hydrogen production remains basically unchanged, but the final hydrogen production is greatly reduced, and the CO2 storage volume is reduced from 30.6mL to 25.8mL. The reduction is mainly due to the hydrogen production deficit volume (i.e., V2). The experimental parameters are summarized in Table 1 and Figure 5 .

[0174] Table 1 Comparison of key parameters of the embodiments

[0175]

[0176] Table 1 shows that the three groups of embodiments can effectively produce hydrogen and store CO2, verifying the feasibility and advancement of the technology.

[0177] In summary, the present invention provides a device and method for evaluating the in-situ hydrogen production and CO2 storage effects of CO2 assisted heating reservoirs. The present invention evaluates the synergistic effects of in-situ hydrogen production and CO2 storage of CO2 assisted heating reservoirs by establishing an indoor physical model and experimental methods. The feasibility and advancement of the in-situ hydrogen production and CO2 storage technology of CO2 assisted heating reservoirs can be verified, and its application in mines can be promoted.

[0178] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0179] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, characterized in that: The CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device comprises: Electric heating model; Electromagnetic heating model; Wherein, the electromagnetic heating model includes: Control and monitoring module; An electromagnetic heating mechanism, the electromagnetic heating mechanism comprising an electromagnetic wave generating chamber, an electromagnetic wave generator, and a waveguide tube. The electromagnetic wave generator is installed in the electromagnetic wave generating chamber, the electromagnetic wave generator is electrically connected to the control and monitoring module through a control connection, and a waveguide tube is installed on one side of the electromagnetic wave generating chamber, the waveguide tube is used to propagate the electromagnetic wave generated by the electromagnetic wave generator; A simulated reaction chamber, wherein a reaction chamber is fixedly installed in the simulated reaction chamber, the reaction chamber is filled with saturated oil sand, and a second valve is installed on the top of the reaction chamber, and the second valve is used to control the opening and closing of the reaction chamber; A hydrogen filter membrane is detachably installed in the reaction chamber, and the hydrogen filter membrane is used to filter the generated hydrogen; A gas pipeline connected to the reaction chamber, in which a gas flow meter is installed, and the gas flow meter is used to record the flow of the gas; A hydrogen collecting bottle, which is connected to the gas pipeline and is used to collect the generated hydrogen; A first valve, wherein the first valve is connected to one end of the reaction chamber, an end of the first valve away from the reaction chamber is connected to a first pressure gauge, and the first pressure gauge is electrically connected to the control and monitoring module through a control wiring; A sealing gasket is installed at the bottom of the simulated reaction chamber, and the sealing gasket is sleeved on the outer side of the lower end of the reaction chamber to seal and protect the reaction chamber; A third valve is arranged on one side of the first pressure gauge, the third valve is connected to the first pressure gauge, and a side of the third valve away from the first pressure gauge is connected to a piston container; A piston container, the piston container is used to contain carbon dioxide gas, one side of the piston container is connected to the ISCO injection pump, and the piston container is fixedly installed in the heating device; Infrared thermometer, fixedly installed on the side wall of the simulated reaction chamber, is used to measure the temperature of the reaction chamber in real time. The argon pressurizing device is used to blow argon into the reaction chamber. A fourth valve is connected to one side of the argon pressurizing device. A second pressure gauge is connected to the side of the fourth valve away from the argon pressurizing device. The second pressure gauge is used to detect the pressure of the pumped argon. The gas outlet end of the argon pressurizing device is connected to the reaction chamber.

2. The CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device according to claim 1, characterized in that: The electric heating model includes: Control and monitoring module; An electric heating mechanism, the electric heating mechanism comprising an electric heating control device, an electric heating conduction device, and an electric heating component, the electric heating control device is electrically connected to the control and monitoring module through a control wiring, and the electric heating component is fixedly installed in the simulation reaction chamber; A simulated reaction chamber, wherein a reaction chamber is fixedly installed in the simulated reaction chamber, the reaction chamber is filled with saturated oil sand, and a second valve is installed on the top of the reaction chamber, and the second valve is used to control the opening and closing of the reaction chamber; A hydrogen filter membrane is detachably installed in the reaction chamber, and the hydrogen filter membrane is used to filter the generated hydrogen; A gas pipeline connected to the reaction chamber, in which a gas flow meter is installed, and the gas flow meter is used to record the flow of the gas; A hydrogen collecting bottle, which is connected to the gas pipeline and is used to collect the generated hydrogen; A first valve, wherein the first valve is connected to one end of the reaction chamber, an end of the first valve away from the reaction chamber is connected to a first pressure gauge, and the first pressure gauge is electrically connected to the control and monitoring module through a control wiring; A sealing gasket is installed at the bottom of the simulated reaction chamber, and the sealing gasket is sleeved on the outer side of the lower end of the reaction chamber to seal and protect the reaction chamber; A third valve is arranged on one side of the first pressure gauge, the third valve is connected to the first pressure gauge, and a side of the third valve away from the first pressure gauge is connected to a piston container; A piston container, the piston container is used to contain carbon dioxide gas, one side of the piston container is connected to the ISCO injection pump, and the piston container is fixedly installed in the heating device; Infrared thermometer, fixedly installed on the side wall of the simulated reaction chamber, is used to measure the temperature of the reaction chamber in real time. The argon pressurizing device is used to blow argon into the reaction chamber. A fourth valve is connected to one side of the argon pressurizing device. A second pressure gauge is connected to the side of the fourth valve away from the argon pressurizing device. The second pressure gauge is used to detect the pressure of the pumped argon. The gas outlet end of the argon pressurizing device is connected to the reaction chamber.

3. The CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device according to claim 2, characterized in that: The reaction chamber comprises: A cabin body, the cabin body is fixedly installed in the simulation reaction chamber; A hydrogen output port is arranged on the top of the cabin, and the hydrogen output port is used to release the produced hydrogen; A carbon dioxide injection port is arranged at the bottom of the cabin, and the carbon dioxide injection port is connected to the first valve; An upper end cover, the upper end cover being detachably mounted on the upper end of the cabin body; A lower end cover, the lower end cover being detachably mounted on the lower end of the cabin body; A metal porous medium partition is fixedly installed in the cabin, and the metal porous medium partition is used to slow down the flow rate of carbon dioxide. A hydrogen reaction pool is arranged on the upper side of the metal porous medium partition, and a carbon dioxide preheating pool is arranged on the lower side of the metal porous medium partition.

4. A method for evaluating the effect of in-situ hydrogen production and CO2 storage in a CO2-assisted heating reservoir, which is implemented by using the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device as claimed in claim 3, characterized in that: the method for evaluating the effect of in-situ hydrogen production and CO2 storage in a CO2-assisted heating reservoir comprises: S10, filling the reaction chamber; S20, connect the experimental process and debug the instruments and equipment; S30, simulated reservoir temperature and pressure conditions; S40, injecting high-temperature CO2 into the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device to preheat the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, wherein the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device is; S50, hydrogen production using CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device; S60, collecting hydrogen and calculating the hydrogen output; S70, injecting CO2 again to reduce the temperature and pressure conditions of the reservoir, and calculating the CO2 storage capacity; S80, close the equipment cleaning experiment process.

5. The method for evaluating the effect of in-situ hydrogen production and CO2 storage by CO2-assisted heating of reservoirs according to claim 4, characterized in that: The method for filling the reaction chamber comprises: Obtain the natural core or outcrop of the target reservoir and crush it, mix it evenly with crude oil, open the upper end cover and fill it into the hydrogen reaction pool and close the upper end cover, then open the lower end cover and fill quartz sand into the carbon dioxide preheating pool, and then close the lower end cover.

6. The method for evaluating the effect of in-situ hydrogen production and CO2 storage by CO2-assisted heating of a reservoir as claimed in claim 5, characterized in that: The method for simulating reservoir temperature and pressure conditions specifically comprises: Open the first valve, the third valve and the fourth valve, close the second valve, and simultaneously start the ISCO injection pump and the argon pressurizing device, inject gas into the hydrogen reaction pool and the carbon dioxide preheating pool until the preset pressure is reached, close the first valve, the third valve and the fourth valve, heat the simulated reaction chamber to make its temperature reach the reservoir temperature, let it stand for more than 2 hours to make the temperature and pressure in the reaction chamber uniform, and record the stable pressure P1 and stable temperature T1.

7. The method for evaluating the effect of in-situ hydrogen production and CO2 storage by CO2-assisted heating of a reservoir as claimed in claim 6, characterized in that: The method of injecting high-temperature CO2 into the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device specifically comprises: Turn on the heating device to heat the CO2 in the piston container to the preset temperature, open the first valve and the third valve, turn on the ISCO injection pump to inject the high-temperature CO2 in the piston container into the carbon dioxide preheating pool, monitor the temperature of the infrared thermometer in real time, and close the ISCO injection pump and the third valve when the pressure of the first pressure gauge reaches the target reservoir pressure, and record the CO2 injection volume V1 and the pressure P2 of the first pressure gauge.

8. The method for evaluating the effect of in-situ hydrogen production and CO2 storage by CO2-assisted heating of a reservoir as claimed in claim 7, characterized in that: The method for collecting hydrogen and calculating the hydrogen output comprises: The gas in the reaction chamber is filtered through a hydrogen filter membrane to remove other gases to obtain a pure hydrogen flow, and the gas flow is recorded by a gas flow meter. Finally, the hydrogen is collected in a hydrogen collection bottle. When the monitoring value of the gas flow meter drops to a preset value, the second valve is closed and the total hydrogen production is recorded.

9. The method for evaluating the effect of in-situ hydrogen production and CO2 storage by CO2-assisted heating of a reservoir as claimed in claim 8, characterized in that: The method for calculating the CO2 storage amount specifically includes: Close the CO2-assisted heating reservoir in-situ hydrogen production and CO2 storage effect evaluation device, and after the temperature in the reaction chamber returns to temperature T1, open the third valve and the ISCO injection pump, and continue to inject the CO2 gas in the piston container into the carbon dioxide preheating pool. The high-pressure CO2 will enter the hydrogen reaction pool through the metal porous medium barrier, fill the pore space after hydrogen generation and production, and replenish the pressure in the hydrogen reaction pool. Stop the injection after the pressure of the second pressure gauge returns to pressure P2, close the ISCO injection pump and the third valve, and record the injected CO2 volume V2. The CO2 storage amount is V1+V2.

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