Physical simulation experiment device for real-time monitoring of in-situ CO2 displacement and storage

By designing a physical simulation experimental device for real-time monitoring of in-situ CO2 displacement and storage with a self-locking mechanism and a visual observation window, the problems of sealing and limited experimental scenarios were solved, achieving precise control and uniform distribution of carbon dioxide, and enhancing the realism and flexibility of the experiment.

CN120891173APending Publication Date: 2025-11-04NANTONG HUAXING OIL EQUIP
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Patent Information

Application Number
CN202510789104.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-13
Publication Date
2025-11-04

AI Technical Summary

Technical Problem

Existing physical simulation experimental devices for real-time monitoring of in-situ CO2 displacement and storage have problems with sealing and flexibility, which can easily lead to gas leakage. In addition, the experimental scenarios are limited and cannot meet diverse experimental needs.

Method used

An experimental apparatus was designed, comprising a simulated chamber, a fixed cover, a locking mechanism, and a gas storage tank. The locking mechanism enables single-point or multi-point carbon dioxide input through its self-locking and unlocking functions. Combined with a visual observation window and a separator, it ensures both airtightness and experimental flexibility.

Benefits of technology

It achieves precise control and uniform distribution of carbon dioxide within the simulation chamber, enhancing the realism and flexibility of the experiment, preventing gas leakage, and supporting diverse geological environment simulations and experimental data capture.

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Abstract

The invention relates to the field of physical experiments, in particular to an in-situ CO2 displacement and storage real-time monitoring physical simulation experiment device. The device comprises a simulation chamber, an operation table is assembled on the bottom surface of the simulation chamber, a fixing cover is slidably connected to the top of the simulation chamber, a locking mechanism is driven through movement of the fixing cover, switching of different gas transmission modes is achieved, when the locking mechanism moves to a first fixing point, a single-point gas transmission system is formed, a carbon dioxide input path can be accurately controlled, and the carbon dioxide input efficiency is improved. According to the device, the displacement condition of carbon dioxide in the simulation chamber under specific conditions can be researched conveniently, meanwhile, the self-locking function of the locking mechanism is achieved through mutual cooperation of the locking mechanism and the fixing cover, locking and quick disassembly of the fixing cover are facilitated, and meanwhile the installation process of the fixing cover is simplified; when the gas storage tank moves to a second fixed point, the gas storage tank, the fixed cover and the simulation chamber are communicated and connected to form a second gas transmission system, and the carbon dioxide is uniformly scattered into the simulation chamber from a high position.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of physical experiments, in particular to a real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage. BACKGROUND

[0002] The real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage is specially used for simulating the process of CO2 displacing oil and gas resources (such as crude oil and natural gas) and achieving geological storage in the underground reservoir environment, and its core function is to reproduce the in-situ environment of the formation under controllable temperature and pressure conditions, dynamically track the whole process of CO2 injection-migration-storage, and simultaneously collect fluid dynamics, rock mechanics response and storage stability data in real time through a multi-dimensional sensor network,

[0003] In addition, the current real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage has a single demonstration scene, and it is inconvenient to switch the mode of single-point or multi-point input of carbon dioxide according to the actual environment, which limits the experimental results.

[0004] In the field of real-time monitoring physical simulation experiment for in-situ CO2 displacement and storage, the simulation chamber needs to be manually pre-sealed during the experiment. In order to ensure the sealing of the experimental environment, an additional bolt fixing device is often used for sealing. However, when carbon dioxide is filled into the simulation chamber, the internal gas pressure will increase, and the increased gas pressure will push the fixed cover upwards. If the fixed cover is simply inserted into the simulation chamber or is only fixed by a bolt, it is easy to be pushed open by the increased gas pressure, causing gas leakage and ultimately affecting the experimental results.

[0005] In addition, the current real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage has a single demonstration scene, and it is inconvenient to flexibly switch the mode of single-point or multi-point input of carbon dioxide according to the actual environment, which limits the experimental results. In view of this, we propose a real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage. SUMMARY

[0006] The present application aims to provide a real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides a real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage, comprising a simulation chamber, wherein the bottom surface of the simulation chamber is equipped with an operation table, the top of the simulation chamber is slidingly connected with a fixed cover, the bottom of the fixed cover is connected with a plugging piston, and the top of one side of the operation table is fixedly connected with a gas storage tank.

[0008] The two sides of the simulation chamber are provided with locking mechanisms, and the extrusion force generated by the movement of the fixed cover drives the locking mechanisms to move downward, when the locking mechanisms move to the first fixed point, the fixed cover and the locking mechanisms realize self-locking and seal the gas inlet channel in the locking mechanism, at this time, the carbon dioxide in the gas storage tank is directly input to the simulation chamber to form a single-point gas input system;

[0009] When the locking mechanisms move to the second fixed point, the fixed cover and the locking mechanisms form double self-locking and open the gas inlet channel, at this time, the gas storage tank, the fixed cover and the simulation chamber are connected through, forming a second gas input system.

[0010] The beneficial effects of the present application are:

[0011] 1、In the present application, the locking mechanisms are driven by the movement of the fixed cover to realize the switching of different gas input modes, when the locking mechanisms move to the first fixed point, a single-point gas input system is formed, the carbon dioxide input path can be accurately controlled, the displacement of carbon dioxide in the simulation chamber under specific conditions can be conveniently studied, and meanwhile, the self-locking function of the locking mechanisms is realized through the mutual cooperation of the locking mechanisms and the fixed cover, which not only facilitates the locking and quick dismounting of the fixed cover, but also simplifies the installation process.

[0012] When moving to the second fixed point, the gas storage tank, the fixed cover and the simulation chamber are connected through, forming a second gas input system, the carbon dioxide is uniformly poured into the simulation chamber from a high place, the natural convection effect is generated by using gravity, so that the carbon dioxide is better mixed with the fluid (such as water and oil) in the geological medium sample, the displacement reaction is smoothly carried out, the authenticity of the experiment is enhanced, the injection scene of carbon dioxide in a more complex geological environment can be simulated, the diversified experimental requirements are met, and the double fixing effect is realized, so that the situation that the fixed cover is blown away by the pressure generated when the carbon dioxide is filled is effectively avoided.

[0013] As a further improvement of the technical solution, the inside of the simulation chamber is provided with a geological medium sample, the side of the simulation chamber is connected through with a water inlet pipe and an oil inlet pipe respectively, the front of the simulation chamber is provided with a visual observation window for observing the condition of the experiment, the bottom of the sealing piston is provided with a plurality of air vents for inputting carbon dioxide into the simulation chamber, and the inside of the two sides of the simulation chamber is provided with an installation cavity.

[0014] The beneficial effects of the above further scheme are that the front of the simulation chamber is provided with a visual observation window, which cooperates with the internal geological medium sample, the water inlet pipe, the oil inlet pipe and the air vents at the bottom of the sealing piston, so that the experimenters can directly observe the whole process of the displacement reaction of carbon dioxide with water and oil in the geological medium after the carbon dioxide is injected, the experimental phenomena can be captured in time and the experimental parameters can be adjusted, which provides a strong guarantee for the accurate promotion of the experiment.

[0015] As a further improvement of the technical solution, the top of the gas storage tank is connected with a transportation pump, and the output end of the transportation pump is connected to a transportation pipe, the surface of the transportation pipe is fixedly installed with a one-way valve, and the output end of the transportation pipe is connected to the input end of the simulation chamber, the top of the gas storage tank is connected with an inlet pipe for injecting carbon dioxide.

[0016] The beneficial effect of the above further scheme is that the transportation pump can provide stable power for the transportation of carbon dioxide, and the input flow and pressure of carbon dioxide can be accurately controlled according to experimental requirements, ensuring that carbon dioxide can be continuously and stably injected into the simulation chamber during simulation experiments, maintaining the continuity and accuracy of the experiments, and facilitating researchers to study the displacement and storage effect of carbon dioxide under different pressure and flow conditions.

[0017] As a further improvement of the technical solution, the locking mechanism comprises two secondary locking rods fixedly connected to the bottom surface of the fixed cover, the two sides of the secondary locking rods are fixedly connected with a first protrusion and a second protrusion, the side surfaces of the first protrusion and the second protrusion are inclined, and the inclined surfaces of the first protrusion and the second protrusion are respectively overlapped with inclined blocks, a straight groove is formed in the inside of the secondary locking rod, the straight groove forms a gas conveying channel with the fixed cover and the blocking piston, one side of the inclined block is fixedly connected with a compression and rebound damping rod and a pull rod, the compression and rebound damping rod is located above the pull rod, the surfaces of the two sides of the simulation chamber are respectively provided with sliding grooves for the sliding of the pull rod, and one end of the compression and rebound damping rod is fixedly connected with the inner wall of the installation cavity of the simulation chamber. The locking mechanism is unlocked by pulling the pull rod to both sides.

[0018] The beneficial effect of the above further scheme is that the secondary locking rod in the locking mechanism cooperates with the components on the fixed cover to realize self-locking and sealing or opening of the gas conveying groove at different positions, and at the same time, the inclined block cooperates with the compression and rebound damping rod, the pull rod and other components, when the fixed cover moves downward to generate extrusion force to drive the locking mechanism, the inclined block interacts with the protrusions on the secondary locking rod under the action of the compression and rebound damping rod, realizing locking in different states, and when unlocking is needed, the pull rod can be pulled to overcome the force of the compression and rebound damping rod, so that the locking is conveniently and quickly released, ensuring the flexibility and stability of the operation of the device.

[0019] As a further improvement of the technical solution, the other side of the top of the operation table is fixedly connected with a separator for separating the substances discharged from the inside of the simulation chamber, and the separator is connected through the simulation chamber.

[0020] The beneficial effect of the above further scheme is that the substances discharged from the simulation chamber are effectively separated, the separated substances are convenient for further analysis, and part of the substances meeting the conditions can participate in the experimental cycle again, which improves the experimental efficiency, reduces resource waste, and helps to deeply study the change rule of substances in the carbon dioxide displacement and storage process.

[0021] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 is a schematic diagram of the overall structure of the present application;

[0024] Figure 3 is a schematic diagram of the overall structure of the present application;

[0025] Figure 4 is a schematic diagram of the overall structure of the present application;

[0026] Figure 5 is a schematic diagram of the overall structure of the present application;

[0027] Figure 6 is a schematic diagram of the overall structure of the present application;

[0028] Figure 7 is a schematic diagram of the overall structure of the present application;

[0029] Figure 8 is a schematic diagram of the overall structure of the present application.

[0030] The meanings of various reference numerals in the drawings are as follows:

[0031] 100, simulation chamber; 101, fixed cover; 102, plugging piston; 103, geological medium sample;

[0032] 200, gas storage tank; 201, transportation pipe;

[0033] 300, locking mechanism; 301, two-stage locking rod; 302, first protrusion; 303, second protrusion; 304, inclined block; 305, compression and rebound damping rod; 306, pull rod;

[0034] 400, separator. DETAILED DESCRIPTION

[0035] With reference to the drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] The present application provides the following preferred embodiments

[0037] Please refer to Figures 1-8 The present embodiment provides a real-time monitoring physical simulation experiment device for in-situ CO2 displacement and storage, which comprises a simulation chamber 100, an operation table is arranged on the bottom surface of the simulation chamber 100, a fixed cover 101 is slidably connected to the top of the simulation chamber 100, a blocking piston 102 is throughly connected to the bottom of the fixed cover 101, and a gas storage tank 200 is fixedly connected to the top of one side of the operation table;

[0038] Locking mechanisms 300 are arranged on both sides of the simulation chamber 100, and the extrusion force generated by the movement of the fixed cover 101 drives the locking mechanisms 300 to move downward, when the locking mechanisms 300 move to a first fixed point, the fixed cover 101 and the locking mechanisms 300 realize self-locking and seal the gas conveying groove in the locking mechanisms 300, at this time, the carbon dioxide in the gas storage tank 200 is directly input into the simulation chamber 100 to form a single-point gas conveying system;

[0039] When the locking mechanisms 300 move to a second fixed point, the fixed cover 101 and the locking mechanisms 300 form double self-locking and open the gas conveying groove, at this time, the gas storage tank 200, the fixed cover 101 and the simulation chamber 100 are throughly connected to form a second gas conveying system.

[0040] When the secondary locking rod 301 moves to a first fixed point, the fixed cover 101 and the locking mechanisms 300 realize self-locking, and at the same time, the gas conveying groove in the locking mechanisms 300 is sealed, at this time, the transportation pump at the top of the gas storage tank 200 is started, the transportation pump directly inputs the carbon dioxide in the gas storage tank 200 into the simulation chamber 100 through the transportation pipe 201 and the one-way valve to form a single-point gas conveying system, and the carbon dioxide displacement experiment in the single-point gas conveying mode is started, the experiment personnel observe the displacement of the carbon dioxide in the geological medium sample 103 through the visual observation window on the front of the simulation chamber 100, and record the related data;

[0041] When the secondary locking rod 301 needs to be lowered to the second fixed point, the fixed cover 101 is continuously pushed downward, at this time, the fixed cover 101 and the locking mechanism 300 form double self-locking, at the same time, the gas conveying groove in the locking mechanism 300 is opened, the gas tank 200, the fixed cover 101 and the simulation chamber 100 are connected through, a second gas conveying system is formed, corresponding experimental operation and data recording are carried out, a more complex geological environment of carbon dioxide injection scene can be simulated, and diversified experimental requirements can be met.

[0042] On the basis, the specific structure is disclosed in detail:

[0043] The inside of the simulation chamber 100 is provided with a geological medium sample 103, and the side of the simulation chamber 100 is respectively connected through a water conveying pipe and an oil conveying pipe, the front of the simulation chamber 100 is provided with a visual observation window for observing the condition of the experiment, the bottom of the sealing piston 102 is provided with a plurality of air holes for inputting carbon dioxide into the simulation chamber 100, and the inside of the simulation chamber 100 is provided with an installation cavity on both sides;

[0044] The visual observation window arranged on the front of the simulation chamber 100 can enable the experimental personnel to observe the experimental condition in real time and intuitively, and in combination with the arrangement of the internal geological medium sample 103 and the water conveying pipe and the oil conveying pipe, the experimental personnel can clearly see the displacement reaction process of carbon dioxide after being injected into the geological medium and water and oil, so that the experimental phenomenon can be captured in time and the experimental parameters can be adjusted, and the experiment can be accurately carried out.

[0045] The top of the gas tank 200 is connected through a conveying pump, and the output end of the conveying pump is communicated to the conveying pipe 201, the surface of the conveying pipe 201 is fixedly installed with a one-way valve, and the output end of the conveying pipe 201 is communicated to the input end of the simulation chamber 100, and the top of the gas tank 200 is connected through an inlet pipe for injecting carbon dioxide;

[0046] The top of the gas tank 200 is connected through the conveying pump, the conveying pump provides power for carbon dioxide conveying, the input flow and pressure of carbon dioxide can be accurately controlled according to experimental requirements, so that carbon dioxide can be stably and continuously injected into the simulation chamber 100, the displacement and storage effect of carbon dioxide under different pressure and flow conditions can be ensured, the top of the gas tank 200 is connected through the inlet pipe, carbon dioxide can be conveniently injected into the gas tank 200 through the inlet pipe, the demand for carbon dioxide gas source for long-time and multi-batch experiments can be met, when the amount of carbon dioxide in the gas tank 200 is insufficient during the experiment, the device does not need to be disassembled, the gas source can be supplemented in time through the inlet pipe, the convenience of experimental operation is improved, the interruption time in the experiment is reduced, and the overall experimental efficiency is improved.

[0047] The locking mechanism 300 comprises a secondary locking rod 301 fixedly connected to the bottom surface of the fixed cover 101, a first protrusion 302 and a second protrusion 303 fixedly connected to the two sides of the secondary locking rod 301 respectively, the side surfaces of the first protrusion 302 and the second protrusion 303 are in a beveled shape, and a bevel block 304 is overlapped at the bevel of the first protrusion 302 and the second protrusion 303, a straight groove is formed in the inside of the secondary locking rod 301, the straight groove, the fixed cover 101 and the blocking piston 102 form a gas conveying channel, a compression and rebound damping rod 305 and a pull rod 306 are fixedly connected to one side of the bevel block 304 respectively, the compression and rebound damping rod 305 is located above the pull rod 306, the surfaces of the two sides of the simulation chamber 100 are provided with sliding grooves for sliding of the pull rod 306, one end of the compression and rebound damping rod 305 is fixedly connected to the inner wall of the installation cavity of the simulation chamber 100, and the locking mechanism 300 is unlocked by pulling the pull rod 306 to two sides;

[0048] When the pull rod 306 is pulled to two sides, the pull rod 306 drives the bevel block 304 to move, because the side surfaces of the first protrusion 302 and the second protrusion 303 are beveled, the bevel block 304 slides upward along the bevel in the moving process, so that the bevel block 304 is separated from the protrusion, and then the restriction on the secondary locking rod 301 is removed, the locking mechanism 300 is unlocked, in this process, the compression and rebound damping rod 305 is compressed, when the pull rod 306 is released, the compression and rebound damping rod 305 rebounds by using the elastic potential energy thereof, drives the bevel block 304 to reset, and returns to the state of being overlapped with the protrusion, preparing for the next locking, at the same time, the gas conveying channel can also be used for balancing pressure, ensuring that the internal gas pressure does not interfere with unlocking and locking in the process of mechanism action, maintaining the stability of the mechanism, the locking mechanism 300 with the above structure has the functions of repeated locking and unlocking, is simple and convenient to operate, and can be unlocked only by pulling the pull rod 306, and can be automatically reset and locked after the pull rod 306 is released, in addition, the presence of the compression and rebound damping rod 305 makes the resetting process of the bevel block 304 smooth, avoids damage to the mechanism caused by excessive resetting impact, and improves the service life and reliability of the locking mechanism 300, in addition, the gas conveying channel ensures the stability of the internal pressure of the mechanism, further improves the working stability and reliability of the entire locking mechanism 300, and makes it adapt to different working environments and working conditions.

[0049] The other side of the top of the operation table is fixedly connected with a separator 400 for separating substances discharged from the inside of the simulation chamber 100, and the separator 400 is throughly connected with the simulation chamber 100;

[0050] The separator 400 adopts the separation principle of centrifugal rate, and separates the mixture by using centrifugal force generated by high-speed rotation. When the water-oil-gas mixture enters the rotating part (such as the cyclone tube in the centrifugal separator 400) of the separator 400 at a certain speed, due to the different masses of water, oil and gas, the centrifugal force they bear is also different. The water with large mass is thrown to the outside and close to the wall of the separator 400; the oil is in the middle position; and the gas with the smallest mass is in the central area. Thus, under the continuous action of the centrifugal force, efficient separation is realized. The mixture usually contains CO2, crude oil, water and other components. After separation, these components can be analyzed and measured in detail to understand their changes in the displacement process. For example, by separating the crude oil, the oil recovery rate can be accurately measured to evaluate the effect of CO2 oil displacement; by analyzing the separated water, the change of the formation water and the influence on the displacement process can be understood; and by monitoring the CO2, the distribution, dissolution and other conditions of the CO2 in the displacement and storage process can be mastered, thereby providing a basis for studying the storage efficiency and safety of CO2.

[0051] Working principle of the present application:

[0052] Preparation stage of the experiment: the geological medium sample 103 is placed in the simulation chamber 100, and carbon dioxide is injected into the gas storage tank 200 through the inlet pipe;

[0053] When a single-point carbon dioxide injection experiment is needed, the fixed cover 101 is pressed downward to drive the second locking rod 301 connected thereto to move downward synchronously. In the downward movement of the second locking rod 301, the first protrusions 302 on both sides thereof will extrude the uppermost inclined blocks 304, forcing the inclined blocks 304 to move to both sides. The inclined blocks 304 will transmit the pressure to the compression and rebound damping rod 305 connected thereto, causing the compression and rebound damping rod 305 to be compressed. When the first protrusions 302 move below the uppermost inclined blocks 304, the pressure on the compression and rebound damping rod 305 is released, and the compression and rebound damping rod 305 immediately drives the inclined blocks 304 to move reversely, thereby locking the fixed cover 101 at the first fixed point (the inclined blocks 304 are provided with two groups, the lower inclined blocks 304 are in contact with each other in the initial original state, and one side of the two groups of inclined blocks 304 is further fixedly connected with a rubber sealing gasket. The rubber sealing gasket will be stretched and compressed with the movement of the inclined blocks 304, thereby forming a closed space. In this case, the carbon dioxide can only flow into the inside of the simulation chamber 100 from below the second group of inclined blocks 304. The side walls of the inclined blocks 304, the second locking rod 301 and the rubber sealing gasket are precisely fitted with the installation cavity inside the simulation chamber 100.

[0054] When multiple-point experiments on carbon dioxide are needed, continue to press down the fixing cover 101, the fixing cover 101 drives the secondary locking rod 301 to move downward continuously, in this process, the second protrusion 303 on the secondary locking rod 301 contacts the inclined block 304 below and exerts a pressing effect on the inclined block 304, when the secondary locking rod 301 moves below the inclined block 304, the compression spring damping rod 305 drives the inclined block 304 to move reversely, thereby stably fixing the fixing cover 101 at the second fixed point, (the secondary locking rod 301 blocks the communication between the transport pipe 201 and the simulation chamber 100, so that carbon dioxide flows into the inside of the secondary locking rod 301) at this time, the flow direction of carbon dioxide is switched to the second gas conveying system: carbon dioxide flows into the installation cavity, then enters the inside of the secondary locking rod 301, then flows from the secondary locking rod 301 into the fixing cover 101, and finally passes through the plugging piston 102 below the fixing cover 101 and is evenly scattered into the inside of the simulation chamber 100;

[0055] Experiment starting stage: when the fixing cover 101 moves to the appropriate position (such as the first fixed point or the second fixed point), start the transport pump, transport the carbon dioxide in the gas storage tank 200 to the simulation chamber 100 through the transport pipe 201, open the water conveying pipe and the oil conveying pipe, and convey water and oil into the simulation chamber 100;

[0056] Experiment stage: after carbon dioxide, water and oil begin to be injected into the simulation chamber 100, use various sensors installed in the simulation chamber 100, such as temperature sensors, pressure sensors and concentration sensors, to record the initial temperature, pressure and initial concentration of various substances in the simulation chamber 100 at this time, at the same time, through the visual observation window, observe the contact state of the geological medium sample 103 with the just-injected water and oil in the initial stage, record possible initial phenomena, such as the adhesion of oil droplets on the surface of the geological medium, the water infiltration phenomenon, etc., and store them in the form of images or videos, as carbon dioxide continues to be injected, the displacement process gradually unfolds, with the help of the visual observation window, the displacement path of carbon dioxide in the simulation chamber 100 is observed in real time, how it breaks through the pore structure of the geological medium and gradually displaces water and oil from their original positions is observed, by comparing the observation conditions at different times, the advancing trajectory of the carbon dioxide displacement front is drawn, the displacement speed and efficiency are analyzed, during the experiment, various sensors continue to work, and the temperature, pressure, carbon dioxide concentration, water and oil saturation in the simulation chamber 100 are automatically collected and recorded every certain time interval (such as minutes);

[0057] The experimental product processing stage: using the infusion pump assembled on the operating table, the mixture at the bottom of one side of the simulation chamber 100 is transported to the separator 400, (after carbon dioxide displacement, it will be stored, and the data of the experiment is recorded again) the mixture is in the separator 400, and the centrifugal force generated by high-speed rotation is used to separate the mixture, when the water-oil-gas mixture enters the rotating part (such as the cyclone tube in the centrifugal separator 400) of the separator 400 at a certain speed, due to the different masses of water, oil and gas, the centrifugal force they bear is also different, the heavy water is thrown to the outside, close to the wall of the separator 400; the oil is in the middle position; the gas with the smallest mass is in the center area, so under the continuous action of the centrifugal force, high-efficiency separation is realized;

[0058] The experimental end stage: close the transport pump, the infusion pump, stop the transportation of carbon dioxide, water and oil, move the pull rod 306 inward with hand, the pull rod 306 transmits the pressure to the compression spring damping rod 305, drives the inclined block 304 to move outward, makes the two inclined blocks 304 and the secondary locking rod 301 disengage, releases the self-locking, pulls the fixed cover 101 upward, opens the simulation chamber 100, cleans the residual substances in the simulation chamber 100, the separation chamber and the pipelines, maintains the experimental device, and prepares for the next experiment.

[0059] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above examples, the above examples and descriptions in the specification are only preferred examples of the present application, and are not used to limit the present application, various changes and improvements of the present application can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A physical simulation experimental device for real-time monitoring of in-situ CO2 displacement and storage, comprising a simulation chamber (100), the bottom surface of the simulation chamber (100) is equipped with an operation table, characterized in that: The top of the simulation chamber (100) is slidably connected with a fixed cover (101), the bottom of the fixed cover (101) is throughly connected with a blocking piston (102), the top of the operating table is fixedly connected with a gas storage tank (200); The two sides of the simulation chamber (100) are provided with locking mechanisms (300), the extrusion force generated by the movement of the fixed cover (101) drives the locking mechanisms (300) to move downward, when the locking mechanisms (300) move to the first fixed point, the fixed cover (101) and the locking mechanisms (300) realize self-locking and seal the gas conveying groove in the locking mechanisms (300), at this time, the carbon dioxide in the gas storage tank (200) is directly input into the simulation chamber (100) to form a single-point gas conveying system; When the locking mechanisms (300) move to the second fixed point, the fixed cover (101) and the locking mechanisms (300) form double self-locking and open the gas conveying groove, at this time, the gas storage tank (200), the fixed cover (101) and the simulation chamber (100) are throughly connected to form a second gas conveying system.

2. The physical simulation experimental device for real-time monitoring of in-situ CO2 displacement and storage according to claim 1, characterized in that: The inside of the simulation chamber (100) is provided with a geological medium sample (103), the side of the simulation chamber (100) is throughly connected with a water conveying pipe and an oil conveying pipe, the front of the simulation chamber (100) is provided with a visual observation window for observing the condition of the experiment, the bottom of the blocking piston (102) is provided with a plurality of air holes for inputting carbon dioxide into the simulation chamber (100), the inside of the two sides of the simulation chamber (100) is provided with a mounting cavity.

3. The physical simulation experimental device for real-time monitoring of in situ CO2 displacement and storage according to claim 1, characterized in that: The top of the gas storage tank (200) is throughly connected with a transportation pump, and the output end of the transportation pump is communicated to a transportation pipe (201), the surface of the transportation pipe (201) is fixedly installed with a one-way valve, and the output end of the transportation pipe (201) is communicated to the input end of the simulation chamber (100), the top of the gas storage tank (200) is throughly connected with an inlet pipe for injecting carbon dioxide.

4. The physical simulation experimental device for real-time monitoring of in situ CO2 displacement and storage according to claim 1, characterized in that: The locking mechanisms (300) comprise second locking rods (301) fixedly connected to the bottom surface of the fixed cover (101), the two sides of the second locking rods (301) are fixedly connected with first protrusions (302) and second protrusions (303), respectively, the side surfaces of the first protrusions (302) and the second protrusions (303) are inclined, and the inclined surfaces of the first protrusions (302) and the second protrusions (303) are respectively lapped with inclined blocks (304).

5. The physical simulation experimental device for real-time monitoring of in situ CO2 displacement and storage according to claim 4, characterized in that: The inside of the second locking rod (301) is provided with a straight groove, the straight groove forms a gas conveying channel with the fixed cover (101) and the blocking piston (102).

6. The physical simulation experimental device for real-time monitoring of in situ CO2 displacement and storage according to claim 4, characterized in that: One side of the inclined block (304) is fixedly connected with a compression rebound damping rod (305) and a pull rod (306), respectively, the compression rebound damping rod (305) is located above the pull rod (306), the surfaces of the two sides of the simulation chamber (100) are provided with sliding grooves for sliding of the pull rod (306).

7. The physical simulation experimental device for real-time monitoring of in situ CO2 displacement and storage according to claim 6, characterized in that: One end of the compression rebound damping rod (305) is fixedly connected with the inner wall of the mounting cavity of the simulation chamber (100), and the unlocking of the locking mechanism (300) is realized by pulling the pull rod (306) to both sides.

8. The physical simulation experimental device for real-time monitoring of in situ CO2 displacement and storage according to claim 1, characterized in that: The other side of the top of the operation table is fixedly connected with a separator (400), which is used for separating the substances discharged from the inside of the simulation chamber (100), and the separator (400) is in through connection with the simulation chamber (100).