Indoor simulation visualization device for gas-liquid-solid coupling migration and use method of indoor simulation visualization device

Abstract

The invention belongs to the technical field of carbon dioxide enhanced shale gas exploitation, and discloses a gas-liquid-solid coupling migration indoor simulation visualization device and a using method thereof.The device comprises an adsorption chamber, and the adsorption chamber is provided with a containing cavity; wherein partition plate components are arranged on the two sides of the containing cavity, each partition plate component comprises n partition plates which are arranged in a stacked mode, n is a positive integer larger than 3, n-1 first gaps are formed between the n partition plates in each partition plate component, n-1 rock simulating plates are further arranged in the containing cavity, and n-1 second gaps are formed between the n-1 second gaps. The two ends of the n-1 rock simulating plates are arranged in the n-1 first gaps of the two partition plate components in a one-to-one correspondence mode, a second gap is formed between every two adjacent rock simulating plates, and the second gaps are filled with oil shale. According to the indoor simulation visualization device for gas-liquid-solid coupling migration, the environment where underground shale oil is located can be simulated, and various parameters of CO2-ESGR required in a real environment corresponding to the simulated environment are obtained.

Description

Technical Field

[0001] The present invention belongs to the technical field of carbon dioxide enhanced shale gas exploitation, and in particular relates to a gas-liquid-solid coupled migration indoor simulation visualization device and a use method thereof. Background Art

[0002] Enhanced shale gas recovery (CO2-ESGR) is the process of using carbon dioxide instead of water to fracture shale, and using the fact that carbon dioxide has a stronger ability to adsorb shale than methane to displace methane, thereby increasing shale gas recovery and achieving geological storage of carbon dioxide.

[0003] Shale oil includes oil in the pores and cracks of shale, and also includes oil resources in the adjacent layers and interlayers of dense carbonate or clastic rocks in the shale formation. The quality of the two types of oil and gas is very different. One is liquid and easy to extract, and the other is mixed in soil debris and difficult to extract. When faced with two different oil and gas resources, the effects that can be achieved using the CO2-ESGR method are also different. When faced with different oil and gas resources, the specific operating methods of each parameter in the CO2-ESGR method are difficult to know in advance for the targeted parameters. Summary of the invention

[0004] In view of the above problems, the present invention provides a gas-liquid-solid coupled migration indoor simulation visualization device and a method for using the same, which adopts the following technical solutions:

[0005] A device for indoor simulation and visualization of gas-liquid-solid coupled migration, comprising an adsorption chamber, wherein the adsorption chamber has a accommodating cavity; wherein baffle components are arranged on both sides of the accommodating cavity, each of the baffle components comprises n baffles arranged in a stacked manner, n is a positive integer greater than 3, and n-1 first gaps are provided between the n baffles in each baffle component; n-1 pseudo-rock plates are also provided in the accommodating cavity, and both ends of the n-1 pseudo-rock plates are respectively arranged in the n-1 first gaps of the two baffle components in a one-to-one correspondence, and a second gap is provided between two adjacent pseudo-rock plates, and the second gap is filled with oil shale.

[0006] Furthermore, a window door is rotatably connected to one side of the adsorption chamber, a pipe communicating with the accommodating cavity is arranged above the adsorption chamber, and a sealing door is arranged on the pipe.

[0007] Furthermore, a plurality of gas rods are provided on one side of the top of each partition, and n-1 first gaps are formed between adjacent partitions in each partition component through the plurality of gas rods on the bottom partition.

[0008] Furthermore, the upper and lower sides of both ends of each of the simulated rock plates are provided with grooves matching the partitions.

[0009] Furthermore, a plurality of positioning holes are provided on the partitions, and the positioning holes of adjacent layers of partitions in each of the partition components are staggered, and the bottom of the upper partition in the adjacent layers of partitions is provided with positioning pins correspondingly inserted into the positioning holes of the lower layer.

[0010] Furthermore, two press frames are provided on the top of the two partition parts of the accommodating chamber, two middle plates are connected between the two press frames, partitions are provided between the middle plates, and the middle plates are located above the topmost pseudo-rock plate.

[0011] Furthermore, a hydraulic pump is provided at the top of the accommodating cavity, and the hydraulic pump is connected to the pressing frame and the middle plate.

[0012] Furthermore, a plurality of carbon dioxide detectors are arranged inside the adsorption chamber.

[0013] Furthermore, the production of the pseudo rock board includes the following steps: raw material collection, raw material processing, pseudo rock board molding and drying and roasting;

[0014] Among them, raw material processing includes shale crushing, and the diameter of shale crushing particles is less than 2.5mm.

[0015] Furthermore, the molding of the pseudo-rock slab includes hard extrusion, semi-hard plastic extrusion and soft plastic extrusion molding.

[0016] Furthermore, during the drying and roasting process, the sintering temperature of the formed pseudo-rock board is 1000°C.

[0017] The present invention also provides a method for using the gas-liquid-solid coupled migration indoor simulation visualization device, comprising the following steps:

[0018] The oil shale is laid on the pseudo rock plates, and the pseudo rock plates are stacked layer by layer into the adsorption chamber so that the oil shale is located in the second gap between two adjacent pseudo rock plates, and the two ends of each layer of pseudo rock plates are placed in the first gap of the partition components on both sides;

[0019] Apply pressure to the partition members and the pseudo-rock plate on both sides;

[0020] Use a drilling machine to drill holes in the simulated rock slab through the pipeline to simulate the oil recovery step;

[0021] Liquid, supercritical and solid carbon dioxide are injected into a hole of the pseudo-rock plate respectively;

[0022] The amount of free carbon dioxide in the adsorption chamber and the amount of oil shale squeezed out from the other hole of the pseudo-rock plate are detected. The shape of the pseudo-rock plate cracked by the carbon dioxide is mapped and sampled using an infrared detector.

[0023] Furthermore, the method further comprises the following steps:

[0024] The carbon dioxide content in the unit space of the adsorption chamber is detected by a carbon dioxide detector inside the containing cavity, and the amount of free carbon dioxide is calculated according to the size of the free space. The carbon dioxide content adsorbed on the pseudo-rock plate is calculated by subtracting the free carbon dioxide from the total carbon dioxide amount.

[0025] The present invention also provides a method for using the gas-liquid-solid coupled migration indoor simulation visualization device, comprising the following steps:

[0026] The adsorption chamber is connected to the reference chamber of the isothermal adsorption experimental system through a first pipeline; a first valve is arranged on the first pipeline;

[0027] Check the air tightness of the reference chamber and the adsorption chamber, and measure the total volume of the reference chamber and the adsorption chamber;

[0028] The isothermal adsorption experimental system is evacuated by a vacuum pump, and after a certain period of time, CO2 gas is injected into the adsorption chamber through the first gas cylinder or the second gas cylinder, and the shale sample to be tested is placed in the adsorption chamber, and the system pressure is observed by the first pressure gauge and the second pressure gauge at the same time, and the reference chamber pressure is recorded when the pressure is constant;

[0029] Open the first valve, and when the pressures in the reference chamber and the adsorption chamber become constant again, record the equilibrium pressure, and calculate the total adsorbed gas volume and the adsorbed gas volume per unit mass of the shale sample.

[0030] Beneficial effects of the present invention: The indoor simulation and visualization device for gas-liquid-solid coupled migration of the present invention sets up an adsorption chamber and uses a simulated rock plate to simulate the environment in which underground shale oil is located. By specifically introducing liquid, supercritical and solid carbon dioxide therein, various data are analyzed to obtain various parameters of CO2-ESGR required in the real environment corresponding to the simulated environment.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1A schematic diagram of the structure of an adsorption chamber according to an embodiment of the present invention is shown;

[0034] Figure 2 A schematic diagram of installing a simulated rock board according to an embodiment of the present invention is shown;

[0035] Figure 3 A schematic diagram of installing a press frame and a middle plate according to an embodiment of the present invention is shown;

[0036] Figure 4 A schematic diagram of a partition structure according to an embodiment of the present invention is shown;

[0037] Figure 5 A schematic diagram showing the connection between an adsorption chamber and an isothermal adsorption experimental system according to an embodiment of the present invention is shown.

[0038] In the figure: 1, adsorption chamber; 2, pipeline; 3, sealing door; 4, accommodating chamber; 5, partition; 6, simulated rock plate; 7, window door; 8, sealing ring; 9, pressure frame; 10, middle plate; 11, partition; 12, gas rod; 13, positioning hole; 14, positioning pin; 15, reference chamber; 16, first valve; 17, second valve; 18, first pressure gauge; 19, first container; 20, second container; 21, third valve; 22, fourth valve; 23, constant pressure and speed regulator; 24, second pressure gauge; 25, vacuum pump; 26, first gas cylinder; 27, second gas cylinder; 28, fifth valve; 29, sixth valve. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that the terms "first", "second" etc. in the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged in appropriate circumstances, so that the embodiments of the present application described here. In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the orientation or positional relationship shown in the accompanying drawings.

[0041] The embodiment of the present invention provides a gas-liquid-solid coupled migration indoor simulation visualization device and a method for using the same, which simulates the environment in which underground shale oil is located, and analyzes various data by specifically introducing liquid, supercritical and solid carbon dioxide therein to obtain various parameters of CO2-ESGR required in the real environment corresponding to the simulated environment.

[0042] like Figure 1 As shown, a gas-liquid-solid coupled migration indoor simulation visualization device includes an adsorption chamber 1, the adsorption chamber 1 has a accommodating cavity 4, a window door 7 is rotatably connected to one side of the adsorption chamber 1, a sealing ring 8 is provided on the adsorption chamber 1 and is sealedly connected to the window door 7, and a plurality of carbon dioxide detectors are arranged inside the adsorption chamber 1.

[0043] like Figure 1 and Figure 2 As shown, partition 5 components are provided on both sides of the accommodating chamber 4, and each partition 5 component includes n partitions 5 arranged in a stacked manner, where n is a positive integer greater than 3, and the partition 5 is a long strip structure. There are n-1 first gaps between the n partitions 5 in each partition 5 component, and n-1 pseudo-rock plates 6 are also provided in the accommodating chamber 4, and the two ends of the n-1 pseudo-rock plates 6 are respectively and one-to-one arranged in the n-1 first gaps of the two partition 5 components. For example, a plurality of gas rods 12 are provided on one side of the top of each partition 5, and the edge portion of the pseudo-rock plate 6 is placed on one side of each partition 5. n-1 first gaps are formed between adjacent partitions 5 in each partition 5 component through a plurality of gas rods 12 on the bottom partition 5, and the two ends of the n-1 pseudo-rock plates 6 are respectively and one-to-one arranged in the n-1 first gaps of the two partition 5 components. There is a second gap between two adjacent pseudo-rock plates 6, and the second gap is filled with oil shale.

[0044] The gas rod 12 of the embodiment of the present invention is pressed down when subjected to force to simulate the environment of the shale layer. At the same time, after the experiment is stopped, the gas rod 12 is reset to facilitate the analysis of the state of each layer of the simulated rock plate 6.

[0045] For example, Figure 2 As shown, the upper and lower sides of both ends of each simulated rock plate 6 are provided with grooves matching the partition 5. By setting the grooves, the contact surface of the partition 5 and the two ends of the simulated rock plate 6 are flat when stacked, and can play a limiting role.

[0046] like Figure 3 As shown, a press frame 9 is provided on the top of the two partition plate 5 parts of the accommodating chamber 4, two middle plates 10 are connected between the two press frames 9, and a partition 11 is provided between the middle plates 10. The middle plate 10 is located above the topmost simulated rock plate 6, and a hydraulic pump is provided at the top of the accommodating chamber 4, and the hydraulic pump is connected to the press frame 9 and the middle plate 10. A pipe 2 connected to the accommodating chamber 4 is provided above the adsorption chamber 1, and a sealing door 3 is provided on the pipe 2.

[0047] By setting the middle plate 10 to contact the top simulated rock plate 6, it is ensured that all parts of the simulated rock plate 6 are evenly stressed, which can better simulate the real environment and achieve better experimental results.

[0048] For example, Figure 4 As shown, a plurality of positioning holes 13 penetrating the upper and lower end surfaces are provided on the partition 5, and the positioning holes 13 of adjacent layers of partitions 5 in each partition 5 component are staggered, and the bottom of the upper layer of partitions 5 in adjacent layers of partitions 5 is provided with positioning pins 14 correspondingly inserted into the lower layer positioning holes 13, to ensure that the positions of the partitions 5 on each layer are correspondingly connected to avoid misalignment.

[0049] The indoor simulation and visualization device for gas-liquid-solid coupled migration of the present invention sets up an adsorption chamber 1 and uses a simulated rock plate 6 to simulate the environment in which underground shale oil is located. By specifically introducing liquid, supercritical and solid carbon dioxide therein, various data are analyzed to obtain various parameters of CO2-ESGR required in the real environment corresponding to the simulated environment.

[0050] For example, the manufacturing method of the pseudo-rock board 6 mainly includes the following steps: raw material collection, raw material processing, pseudo-rock board 6 molding and drying and roasting.

[0051] Among them, raw material collection includes the following steps: soft shale can be directly mined and transported with a single-bucket excavator. For shale with ordinary hardness, drilling and blasting can be carried out. The blasting method can be blasthole blasting. Ammonium hydroxide explosives are more commonly used in shale mining. Its outstanding advantages are moderate sensitivity, safety and reliability. Its disadvantages are poor water resistance and moisture absorption and consolidation. Therefore, working faces with water should not be used, and waterproof measures must be taken, such as waxing, adding waterproof covers and other treatments.

[0052] The raw material processing includes the following steps: crushing the collected shale, preferably secondary crushing, and improving its plasticity and forming degree after mud kneading and aging in a wheel mill. The maximum particle diameter of the crushed shale particles is controlled below 2.5mm. Before the crushed raw materials enter the forming stage, they can be added with auxiliary materials of different properties according to the shale components in the scene of the simulated experiment, and stirred evenly to better resemble the rock material in the corresponding real environment and better simulate the actual scene.

[0053] The forming of the pseudo rock board 6 includes the following steps: since different auxiliary materials may be added in the raw material processing, the formed shale raw material can be formed in different ways and with different moisture contents according to its own plasticity characteristics. When the plasticity index is below 7, a hard extrusion process can be selected. When the plasticity index is between 7 and 11, a semi-hard plastic extrusion process can be adopted. When the plasticity index is above 11, a soft plastic extrusion process can be adopted. The moisture contents of hard extrusion, semi-hard plastic extrusion and soft plastic extrusion are 14-16, 17-18 and above 19 respectively. The cutting and stacking equipment is the same as that of clay bricks to obtain the pseudo rock board 6.

[0054] Drying and roasting include the following steps: using a rotary kiln with a tunnel drying chamber drying process, the drying chamber drying method adopts positive pressure dehumidification, bottom hot air delivery, the firing temperature of the formed pseudo rock board 6 is about 1000 ° C, and the internal combustion method is adopted. When the firing temperature is high, the rotary kiln should be effectively insulated. The roasting kiln should preferably use a tunnel kiln, which can sinter pseudo rock boards 6 of different sizes.

[0055] The embodiment of the present invention also provides a method for using a gas-liquid-solid coupled migration indoor simulation visualization device, comprising the following steps:

[0056] S101. Spread oil shale on the simulated rock plate 6, then open the adsorption chamber 1, and stack the simulated rock plates 6 layer by layer inside it, and pay attention to placing the two ends of each layer of simulated rock plates 6 into the first gap between the partition plates 5 on both sides.

[0057] In the simulation experiment, the simulated rock plate 6 can be inserted into the adsorption chamber 1 by hoisting, and the two side parts are placed in the first gap of the partition plates 5 on both sides. After the simulated rock plate 6 is inserted, the gas rod 12 on the bottom partition plate 5 is pressed down due to gravity. Before the simulated rock plate 6 is inserted, oil shale is pre-laid on the simulated rock plate 6, and then the simulated rock plates 6 covered with shale oil are inserted layer by layer, and stacked layer by layer to simulate the natural state of shale oil.

[0058] S102, close the adsorption chamber 1 to keep it sealed, and then start the hydraulic pump to press the pressure frame 9 and the middle plate 10 downward, apply pressure to the partition 5 components on both sides and the middle simulated rock plate 6, simulating the pressure state in the natural environment.

[0059] S103, opening the sealing door 3 on the top pipeline 2 of the adsorption chamber 1, and using a drilling machine to drill holes on the simulated rock plate 6 through the pipeline 2 to simulate the actual oil production steps.

[0060] S104. Liquid, supercritical and solid carbon dioxide are injected into a hole of the simulated rock plate 6 through one of the pipes 2. The carbon dioxide injected in different states is different experimental batches. According to the simulation experimental examples, solid, liquid and supercritical carbon dioxide are respectively filled in. The pressure between the simulated rock plates 6 is increased through the sublimation of solid carbon dioxide and the evaporation of liquid supercritical carbon dioxide. The gaseous carbon dioxide filled in the gap pushes the oil shale to other directions, so that the oil shale can be extracted from another borehole.

[0061] S105, detecting the amount of free carbon dioxide in the adsorption chamber 1 and the amount of oil shale squeezed out from the other hole of the pseudo-rock plate 6, and using an infrared detector to map and store samples of the shape of the pseudo-rock plate 6 squeezed by the carbon dioxide, detecting the effect of different drilling holes on the oil shale lifting efficiency, the state of carbon dioxide adsorbed on the pseudo-rock plate 6 and the amount of free carbon dioxide.

[0062] Among them, the detection method is specifically as follows: through the carbon dioxide detector inside the accommodating cavity 4, the carbon dioxide content in the unit space of the adsorption chamber 1 is detected, and at the same time, the amount of free carbon dioxide is calculated according to the size of the free space, and then the amount of free carbon dioxide is subtracted from the total amount of carbon dioxide to calculate the carbon dioxide content adsorbed on the pseudo-rock plate 6.

[0063] The embodiment of the present invention also provides a method for using a gas-liquid-solid coupled migration indoor simulation visualization device for conducting a CO2 isothermal adsorption experiment.

[0064] The CO2 isothermal adsorption experiment was carried out using different samples using a GAI-100 high pressure gas isothermal adsorption instrument in accordance with the national standard GB / T19560-2008. The specific experimental steps are as follows:

[0065] S201, such as Figure 5 As shown, the adsorption chamber 1 is connected to the isothermal adsorption experimental system: the adsorption chamber 1 is connected to the reference chamber 15 through a first pipeline, a first valve 16 is provided on the first pipeline, the reference chamber 15 is also connected to the first end of the second valve 17 through a second pipeline, the second valve 17 is connected to the first pressure gauge 18, the second end of the second valve 17 is connected to the first end of the first container 19, the third end of the second valve 17 is connected to the first end of the second container 20, the first end of the first container 19 is also connected to the first end of the third valve 21, the second end of the first container 19 is connected to the first end of the fourth valve 22 The first end of the second container 20 is connected to the second end of the third valve 21, the second end of the second container 20 is connected to the second end of the fourth valve 22, and the third end of the fourth valve 22 is connected to the constant pressure and speed regulator 23; the third valve 21 is connected to the second pressure gauge 24, the third end of the third valve 21 is connected to the vacuum pump 25, the fourth end of the third valve 21 is connected to the first gas cylinder 26 through the third pipeline, the fifth end of the third valve 21 is connected to the second gas cylinder 27 through the fourth pipeline, the fifth valve 28 is arranged on the third pipeline, and the sixth valve 29 is arranged on the fourth pipeline.

[0066] S202, detect the air tightness of the reference chamber 15 and the adsorption chamber 1, and measure the total volume of the reference chamber 15 and the adsorption chamber 1. For example, fill the reference chamber 15 and the adsorption chamber 1 with a proper amount of He to detect the air tightness of the device, and use the gas expansion method with the help of the ideal gas equation to repeatedly measure the total volume of the reference chamber 15 and the adsorption chamber 1, and use the result with a front-to-back error of less than 0.1% as the total volume parameter:

[0067] PV=nRT

[0068] Where p represents the gas pressure, Pa; V represents the volume of the reference chamber 15, m 3; n represents the amount of CO2 substance under pressure p, mol; R represents the ideal gas constant, dimensionless; T represents the thermodynamic temperature of the gas.

[0069] S203. The entire isothermal adsorption experimental system is evacuated by the vacuum pump 25. After 1 hour, CO2 gas (purity 99.99%) is injected into the adsorption chamber 1 through the first gas cylinder 26 or the second gas cylinder 27, and the shale sample to be tested is placed in the adsorption chamber 1. At the same time, the system pressure is observed by the first pressure gauge 18 and the second pressure gauge 24. When the pressure is constant, the pressure of the reference chamber 15 is recorded.

[0070] S204, open the first valve 16 connecting the adsorption chamber 1 and the reference chamber 15, and record the equilibrium pressure when the pressures in the two chambers become constant again, and calculate the total adsorbed gas volume and the adsorbed gas volume per unit mass of the sample.

[0071] S205. Increase the experimental pressure and repeat the above steps S203 and S204 to calculate the total adsorption amount of the sample and the adsorption gas amount per unit mass of the shale sample at each pressure point.

[0072] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas-liquid-solid coupled migration indoor simulation visualization device, characterized in that: It includes an adsorption chamber, wherein the adsorption chamber has a receiving cavity; Partition components are provided on both sides of the accommodating chamber, each of the partition components includes n partitions arranged in a stacked manner, n is a positive integer greater than 3, and there are n-1 first gaps between the n partitions in each of the partition components. There are also n-1 pseudo-rock plates provided in the accommodating chamber, and both ends of the n-1 pseudo-rock plates are respectively and one-to-one arranged in the n-1 first gaps of the two partition components, and there is a second gap between two adjacent pseudo-rock plates, and the second gap is filled with oil shale.

2. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 1 is characterized in that: A window door is rotatably connected to one side of the adsorption chamber, a pipeline communicating with the accommodating cavity is arranged above the adsorption chamber, and a sealing door is arranged on the pipeline.

3. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 1 is characterized in that: A plurality of gas rods are arranged on one side of the top of each partition plate, and n-1 first gaps are formed between adjacent partition plates in each partition plate component through the plurality of gas rods on the bottom partition plate.

4. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 1 is characterized in that: The upper and lower sides of both ends of each simulated rock plate are provided with notches matching the partitions.

5. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 1 is characterized in that: The partition is provided with a plurality of positioning holes, the positioning holes of adjacent partitions in each partition component are staggered, and the bottom of the upper partition in the adjacent partitions is provided with positioning pins correspondingly inserted into the positioning holes of the lower partition.

6. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 1 is characterized in that: The accommodating chamber is provided with two press frames on the top of the two partition components, two middle plates are connected between the two press frames, partitions are provided between the middle plates, and the middle plates are located above the topmost simulated rock plate.

7. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 6 is characterized in that: A hydraulic pump is arranged at the top of the accommodating cavity, and the hydraulic pump is connected to the pressing frame and the middle plate.

8. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to any one of claims 1 to 7, characterized in that: A plurality of carbon dioxide detectors are arranged inside the adsorption chamber.

9. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to any one of claims 1 to 7, characterized in that: The production of the pseudo rock board includes the following steps: raw material collection, raw material processing, pseudo rock board molding and drying and roasting; Among them, raw material processing includes shale crushing, and the diameter of shale crushing particles is less than 2.5mm.

10. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 9, characterized in that: The molding of pseudo rock slab includes hard extrusion, semi-hard plastic extrusion and soft plastic extrusion.

11. The indoor simulation and visualization device for gas-liquid-solid coupled migration according to claim 9, characterized in that: During the drying and roasting process, the sintering temperature of the formed pseudo-rock board is 1000℃.

12. A method for using the indoor simulation visualization device for gas-liquid-solid coupled migration according to any one of claims 1 to 11, characterized in that: The following steps are involved: The oil shale is laid on the pseudo rock plates, and the pseudo rock plates are stacked layer by layer into the adsorption chamber so that the oil shale is located in the second gap between two adjacent pseudo rock plates, and the two ends of each layer of pseudo rock plates are placed in the first gap of the partition components on both sides; Apply pressure to the partition members and the pseudo-rock plate on both sides; Use a drilling machine to drill holes in the simulated rock slab through the pipeline to simulate the oil recovery step; Liquid, supercritical and solid carbon dioxide are injected into a hole of the pseudo-rock plate respectively; The amount of free carbon dioxide in the adsorption chamber and the amount of oil shale squeezed out from the other hole of the pseudo-rock plate are detected. The shape of the pseudo-rock plate cracked by the carbon dioxide is mapped and sampled using an infrared detector.

13. The method for using the indoor simulation visualization device for gas-liquid-solid coupled migration according to claim 12, characterized in that: The following steps are also included: The carbon dioxide content in the unit space of the adsorption chamber is detected by a carbon dioxide detector inside the containing cavity, and the amount of free carbon dioxide is calculated according to the size of the free space. The carbon dioxide content adsorbed on the pseudo-rock plate is calculated by subtracting the free carbon dioxide from the total carbon dioxide amount.

14. A method for using the indoor simulation and visualization device for gas-liquid-solid coupled migration according to any one of claims 1 to 11, characterized in that: The following steps are involved: The adsorption chamber is connected to the reference chamber of the isothermal adsorption experimental system through a first pipeline; a first valve is arranged on the first pipeline; Check the air tightness of the reference chamber and the adsorption chamber, and measure the total volume of the reference chamber and the adsorption chamber; The isothermal adsorption experimental system is evacuated by a vacuum pump, and after a certain period of time, CO2 gas is injected into the adsorption chamber through the first gas cylinder or the second gas cylinder, and the shale sample to be tested is placed in the adsorption chamber, and the system pressure is observed by the first pressure gauge and the second pressure gauge at the same time, and the reference chamber pressure is recorded when the pressure is constant; Open the first valve, and when the pressures in the reference chamber and the adsorption chamber become constant again, record the equilibrium pressure, and calculate the total adsorbed gas volume and the adsorbed gas volume per unit mass of the shale sample.

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