Rock core soaking simulation experiment device

Abstract

The invention provides a rock core soaking simulation experiment device which comprises a soaking container, a pressurizing system, a heating system and a first stirring assembly, the soaking container is provided with a reaction cavity, and a rock core sample and soaking liquid are contained in the reaction cavity; the pressurizing system is connected with the soaking container and can pressurize the reaction cavity; the heating system is arranged on the soaking container and can heat the soaking container; at least one part of the first stirring assembly extends into the reaction cavity and stirs the soaking liquid in the reaction cavity, so that the soaking liquid flows dynamically. The problem that in the prior art, the influence of the water-rock action on the strength of the rock stratum under the conditions of high temperature, high pressure and dynamic circulation of the deep stratum cannot be simulated is solved.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum instruments, in particular to a core immersion simulation experimental device. Background Art

[0002] In the existing technology, 75% of the formations encountered in drilling belong to mud shale formations. Mud shale is a sedimentary rock with a high degree of consolidation, mainly clay minerals. It not only has the common characteristics of rocks, but also has hydration. Mud shale has become the focus of wellbore stability research due to its hydration. However, the current oil and gas exploration and development faces severe challenges such as the deterioration of resource quality and the complexity of oil and gas targets. The global oil and gas exploration and development targets are developing from shallow layers to deep layers and ultra-deep layers. As the well depth increases, the geological conditions become more complex, and high temperature and high pressure are prominent characteristics. Taking the Tarim Basin as an example, according to research data, the ground temperature of the formation below 6000m exceeds 140°C. Current instruments, such as linear dilatometers, can study the condition of mud shale after being immersed in fluids.

[0003] However, there is currently no equipment that can simulate the high temperature and high pressure conditions in deep formations for the working conditions of deep and ultra-deep wells, and explore the impact of water-rock interaction on the strength of shale formations under dynamic circulation. Summary of the invention

[0004] The main purpose of the present invention is to provide a core immersion simulation experimental device to solve the problem in the prior art that it is impossible to simulate the influence of water-rock interaction on the strength of shale formations under high temperature, high pressure and dynamic circulation conditions in deep formations.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a core immersion simulation experimental device is provided, comprising an immersion container, a pressurizing system, a heating system and a first stirring component, wherein the immersion container has a reaction chamber, and the reaction chamber contains a core sample and an immersion liquid; the pressurizing system is connected to the immersion container and can pressurize the reaction chamber; the heating system is arranged on the immersion container and can heat the immersion container; at least a part of the first stirring component extends into the reaction chamber, and stirs the immersion liquid in the reaction chamber to make the immersion liquid flow dynamically.

[0006] Furthermore, the pressurizing system includes a pressurizing pump and a stirring container, wherein the stirring container has a first accommodating chamber and a second accommodating chamber with variable volumes, the first accommodating chamber is connected to the pressurizing pump, the second accommodating chamber is connected to the reaction chamber, and the first accommodating chamber contains an isolation liquid, and the second accommodating chamber contains an immersion liquid.

[0007] Furthermore, a piston is movably provided inside the stirring container, the piston separates the first accommodating chamber from the second accommodating chamber, and the volume of the first accommodating chamber and the volume of the second accommodating chamber change with the movement of the piston.

[0008] Furthermore, the pressurizing system also includes a second stirring component, at least a portion of which extends into the second accommodating chamber and stirs the soaking liquid in the second accommodating chamber.

[0009] Furthermore, the pressurizing system also includes a plurality of pressure relief valves, at least one pressure relief valve is provided at each end of the stirring container; and / or a switch valve, at least one switch valve is provided between the pressurizing pump and the stirring container.

[0010] Furthermore, the immersion container includes a main body and a cover body, the main body has a reaction chamber and an opening connected to the reaction chamber, the cover body is covered on the opening, and the first stirring assembly includes a drive motor, a connecting shaft and at least one set of propellers, wherein one end of the connecting shaft is connected to the drive end of the drive motor; the other end of the connecting shaft passes through the avoidance hole of the cover body and extends into the reaction chamber and is connected to the propeller drive, and the propeller includes a plurality of rotating blades, so that the rotating blades move relative to the immersion container.

[0011] Furthermore, the core immersion simulation experimental device also includes at least one core container, which is arranged in the reaction chamber. The core container has at least one shelf space, and the core sample is placed in the shelf space. The outer surface of the core container has a plurality of flow holes connected to the shelf space.

[0012] Furthermore, the core immersion simulation experimental device also includes a connecting piece, which is arranged inside the reaction chamber, and one end of the connecting piece is connected to the top inner wall of the immersion container, and the other end of the connecting piece is connected to the core container, so that the core container is suspended in the reaction chamber.

[0013] Furthermore, the core immersion simulation experimental device also includes a pressure detection component and a safety valve, wherein the pressure detection component is arranged on the immersion container and can detect the pressure of the reaction chamber; the safety valve is arranged on the immersion container; when the pressure detection component detects that the pressure in the immersion container is greater than a preset pressure value, the safety valve is opened and the pressure in the immersion container is released.

[0014] Furthermore, the core immersion simulation experimental device also includes a vent valve, which is connected to the immersion container.

[0015] The technical solution of the present invention is applied, and a core immersion simulation experimental device includes an immersion container, a pressurizing system, a heating system and a first stirring component, wherein the immersion container has a reaction chamber, and the reaction chamber contains a core sample and an immersion liquid; the pressurizing system is connected to the immersion container and can pressurize the reaction chamber; the heating system is arranged on the immersion container and can heat the immersion container; at least a part of the first stirring component extends into the reaction chamber, and stirs the immersion liquid in the reaction chamber to make the immersion liquid flow dynamically.

[0016] The pressurizing system in this scheme pressurizes the immersion container, the heating system heats the immersion container, and the first stirring component stirs the immersion liquid in the reaction chamber to make the immersion liquid flow dynamically, simulating the high temperature and high pressure formation conditions of deep wells, and reproducing the flow process of the immersion liquid during drilling. By comparing the strength changes of core samples before and after the core immersion simulation experiment, the influence of water-rock interaction on the strength of core samples is explored, so as to select suitable immersion liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A system schematic diagram of a core immersion simulation experimental device according to an optional embodiment of the present invention is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. Soaking container; 11. Main body; 111. Reaction chamber; 112. Opening; 12. Cover; 20. Pressurization system; 21. Pressurization pump; 22. Stirring container; 221. First accommodating chamber; 222. Second accommodating chamber; 223. Piston; 23. Second stirring assembly; 24. Pressure relief valve; 25. Switch valve; 26. First connecting pipeline; 27. Second connecting pipeline; 30. First stirring assembly; 31. Driving motor; 32. Connecting shaft; 33. Propeller; 40. Core container; 41. Shelving space; 50. Connector; 60. Pressure detection component; 70. Safety valve; 80. Vent valve; 2. Core sample. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0022] In order to solve the problem in the prior art that it is impossible to simulate the influence of water-rock interaction on the strength of shale formations under high temperature, high pressure and dynamic circulation conditions in deep formations, the present invention provides a core immersion simulation experimental device.

[0023] like Figure 1As shown, the core immersion simulation experimental device includes an immersion container 10, a pressurizing system 20, a heating system and a first stirring component 30, wherein the immersion container 10 has a reaction chamber 111, and the reaction chamber 111 contains a core sample 2 and an immersion liquid; the pressurizing system 20 is connected to the immersion container 10 and can pressurize the reaction chamber 111; the heating system is arranged on the immersion container 10 and can heat the immersion container 10; at least a portion of the first stirring component 30 extends into the reaction chamber 111, and stirs the immersion liquid in the reaction chamber 111 to make the immersion liquid flow dynamically.

[0024] The pressurizing system 20 in this scheme pressurizes the immersion container 10, the heating system heats the immersion container 10, and the first stirring component 30 stirs the immersion liquid in the reaction chamber 111 to make the immersion liquid flow dynamically, simulating the high temperature and high pressure formation conditions of a deep well, and reproducing the flow process of the immersion liquid during drilling. By comparing the strength changes of the core sample 2 before and after the core immersion simulation experiment, the influence of water-rock interaction on the strength of the core sample 2 is explored, so as to select a suitable immersion liquid.

[0025] like Figure 1 As shown, the pressurizing system 20 includes a pressurizing pump 21 and a stirring container 22, wherein the stirring container 22 has a first accommodating chamber 221 and a second accommodating chamber 222 with variable volumes, the first accommodating chamber 221 is in communication with the pressurizing pump 21, the second accommodating chamber 222 is in communication with the reaction chamber 111, and the first accommodating chamber 221 contains an isolation liquid, and the second accommodating chamber 222 contains an immersion liquid. In this way, the isolation liquid in the first accommodating chamber 221 can isolate the immersion liquid in the second accommodating chamber 222 from the pressurizing pump 21 to prevent the immersion liquid from corroding the pressurizing pump 21, and the immersion liquid in the second accommodating chamber 222 can directly enter the reaction chamber 111 to pressurize the immersion container 10.

[0026] Preferably, the isolation liquid is water, and the soaking liquid is drilling fluid.

[0027] Preferably, the pressure pump 21 is a manual pressure pump.

[0028] It should be noted that, in the present application, the heating system includes a heating plate surrounding the outside of the immersion container 10, which can accurately control the temperature required for the experiment. Preferably, the heating system can provide a temperature of up to 200°C.

[0029] like Figure 1As shown, a piston 223 is movably provided inside the stirring container 22, and the piston 223 separates the first accommodating chamber 221 from the second accommodating chamber 222, and the volume of the first accommodating chamber 221 and the volume of the second accommodating chamber 222 change with the movement of the piston 223. In this way, the pressure pump 21 pressurizes the stirring container 22, and the piston 223 moves toward the second accommodating chamber 222 inside the stirring container 22, so that the volume of the first accommodating chamber 221 increases and the volume of the second accommodating chamber 222 decreases, and the soaking liquid in the second accommodating chamber 222 enters the reaction chamber 111 and mixes with the soaking liquid in the reaction chamber 111, so as to pressurize the soaking container 10.

[0030] like Figure 1 As shown, the pressurizing system 20 further includes a second stirring component 23, at least a portion of which extends into the second accommodating chamber 222 and stirs the soaking liquid in the second accommodating chamber 222. In this way, the second stirring component 23 can prevent the soaking liquid in the second accommodating chamber 222 from settling, thereby affecting the fluidity of the soaking liquid.

[0031] Preferably, the second stirring component 23 includes a stirring motor, a stirring shaft and a rotating blade, wherein one end of the stirring shaft is connected to the stirring motor drive, and the other end of the stirring shaft is connected to the rotating blade, and the rotating blade rotates in the second accommodating chamber 222 to stir the immersion liquid in the second accommodating chamber 222.

[0032] like Figure 1 As shown, the pressurizing system 20 further includes a plurality of pressure relief valves 24, and at least one pressure relief valve 24 is respectively provided at both ends of the stirring container 22. Thus, when the core immersion simulation experiment is completed, the pressure relief valves 24 at both ends of the stirring container 22 are opened to relieve the pressure of the first accommodating chamber 221 and the second accommodating chamber 222 of the stirring container 22.

[0033] like Figure 1 As shown, at least one switch valve 25 is provided between the pressure pump 21 and the stirring container 22. Thus, the switch valve 25 is opened to start the core immersion simulation experimental device to perform an experiment, and the switch valve 25 is closed after the experiment is completed.

[0034] It should be noted that, in the present application, the pressurizing system 20 also includes a first connecting pipeline 26 and a second connecting pipeline 27, the first connecting pipeline connects the pressurizing pump 21 and the first accommodating chamber 221 of the stirring container 22, and the second connecting pipeline 27 connects the second accommodating chamber 222 of the stirring container 22 and the immersion container 10, wherein a pressure relief valve 24 and a switch valve 25 are arranged on the first connecting pipeline 26, and another pressure relief valve 24 is arranged on the second connecting pipeline 27.

[0035] like Figure 1As shown, the soaking container 10 includes a body 11 and a cover 12, the body 11 has a reaction chamber 111 and an opening 112 connected to the reaction chamber 111, the cover 12 is covered on the opening 112, and the first stirring assembly 30 includes a driving motor 31, a connecting shaft 32 and at least one set of propellers 33, wherein one end of the connecting shaft 32 is connected to the driving end of the driving motor 31; the other end of the connecting shaft 32 passes through the avoidance hole of the cover 12 and extends into the reaction chamber 111 and is connected to the propeller 33 for driving, and the propeller 33 includes a plurality of rotating blades, so that the rotating blades move relative to the soaking container 10. In this way, the movement of the propeller 33 ensures that the soaking liquid in the reaction chamber 111 is always in a flowing state, simulating the downhole working conditions when drilling into deep formations to the greatest extent, and the flow state of the drilling fluid during drilling, so as to ensure the reliability of the core soaking simulation experimental device.

[0036] It should be noted that, in the present application, the first stirring assembly 30 can provide different rotation speeds according to experimental requirements during the core immersion simulation experiment.

[0037] like Figure 1 As shown, the core immersion simulation experiment device also includes at least one core container 40, which is arranged in the reaction chamber 111. The core container 40 has at least one shelf space 41, and the core sample 2 is placed in the shelf space 41. The outer surface of the core container 40 has a plurality of flow holes connected to the shelf space 41. In this way, the core container 40 can put a plurality of core samples into the reaction chamber 111 at the same time, which is convenient for taking and placing the core samples, and the core samples can be directly taken out from the reaction chamber 111 after the experiment, which reduces the time waiting for the immersion liquid to cool down, greatly improves the experimental efficiency, and more importantly, can keep the core samples stable in the flowing liquid environment, and prevent the core samples from colliding in the reaction chamber 111 due to the rapid flow of the immersion liquid in the immersion container 10, resulting in cracks or breakage, thereby affecting the experimental accuracy.

[0038] It should be noted that, in the present application, the accommodating space of the core container 40 is a cylindrical space or a rectangular space. The cylindrical space is used to accommodate standard columnar core samples 2, and the rectangular space is used to accommodate core samples 2 of non-standard shapes.

[0039] Preferably, the core container 40 for accommodating standard columnar core samples 2 includes a frame and a plurality of shelf spaces 41, the frame having a central hole for avoiding the connecting shaft 32, and the plurality of shelf spaces 41 are arranged at circumferential intervals around the central hole. In the present embodiment, the frame of the core container 40 is two layers, and each layer includes four shelf spaces 41 arranged circumferentially around the central hole, that is, the core container 40 can accommodate 8 groups of columnar core samples 2 at the same time.

[0040] In another embodiment of the present application, considering that the preparation of the standard columnar core sample 2 takes a long time and has high requirements on the preparation equipment, a core container 40 for accommodating non-standard core samples 2 is designed, and the core container 40 can be directly placed in the reaction chamber 111 of the immersion container 10. In this way, the core container 40 can directly perform immersion experiments on non-standard core samples 2 such as downhole blocks and cuttings, and lowers the experimental threshold with excellent adaptability, saving time costs.

[0041] like Figure 1 As shown, the core immersion simulation experiment device also includes a connector 50, which is arranged inside the reaction chamber 111, and one end of the connector 50 is connected to the top inner wall of the immersion container 10, and the other end of the connector 50 is connected to the core container 40, so that the core container 40 is suspended in the reaction chamber 111. In this way, the connector 50 is connected to the top inner wall of the immersion container 10, that is, the connector 50 is connected to the cover 12 of the immersion container 10. When the cover 12 is opened after the experiment is completed, the core container 40 and the core sample can leave the reaction chamber 111 with the opening of the cover 12, and the staff does not need to take out the core container 40 separately. In addition, the core container 40 is suspended in the reaction chamber 111, which can increase the contact area between the core sample 2 and the immersion liquid and improve the efficiency of the experiment.

[0042] like Figure 1 As shown, the core immersion simulation experimental device further includes a pressure detection member 60 and a safety valve 70, wherein the pressure detection member 60 is arranged on the immersion container 10 and can detect the pressure of the reaction chamber 111; the safety valve 70 is arranged on the immersion container 10; when the pressure detection member 60 detects that the pressure in the immersion container 10 is greater than the preset pressure value, the safety valve 70 is opened and the pressure in the immersion container 10 is released. In this way, the arrangement of the pressure detection member 60 and the safety valve 70 can prevent the pressure in the immersion container 10 from being too high, thereby improving the safety of the experimental equipment.

[0043] Preferably, the pressurizing system 20 can provide a confining pressure of up to 60 MPa. The preset pressure value is 80 MPa.

[0044] like Figure 1 As shown, the core immersion simulation experiment device further includes a vent valve 80, which is connected to the immersion container 10. In this way, when the core immersion simulation experiment is completed, the vent valve 80 is opened to release the pressure of the immersion container 10.

[0045] The core immersion simulation experimental method includes the following steps:

[0046] Place a core sample 2 of standard or non-standard specifications on the core container 40, put the core container 40 into the reaction chamber 111, add soaking liquid into the reaction chamber 111 and flow it to the scale line on the inner wall of the reaction chamber 111, tighten the cover 12 with a wrench, drive the motor 31 to connect the propeller 33 and stir, start the heating system to heat to the required temperature of the experiment, fill the first accommodating chamber 221 and the second accommodating chamber 222 with water and drilling fluid respectively, pressurize with a manual pump, and the drilling fluid enters the soaking container 10 for pressurization. At this time, the soaking container 10 is still heating up, and the pressure only needs to be increased to about 80% of the required pressure. After the temperature and pressure reach the experimental conditions and remain stable, start timing and conduct an immersion experiment; after the experiment, release the pressure (open the pressure relief valve 24 and the vent valve 80), turn off the heating system, take out the soaked core sample 2, wipe off the drilling fluid on the surface, weigh it, and conduct a subsequent scratch test to explore the influence of water-rock interaction on the strength of the core sample 2, evaluate the performance of the drilling fluid, and provide a basis for drilling fluid optimization and drilling design.

[0047] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the pressurizing system 20 in this scheme pressurizes the immersion container 10, the heating system heats the immersion container 10, and the first stirring component 30 stirs the immersion liquid in the reaction chamber 111 to make the immersion liquid flow dynamically, simulating the high temperature and high pressure formation conditions of the deep well, and reproducing the flow process of the immersion liquid during the drilling process. By comparing the strength changes of the core sample 2 before and after the core immersion simulation experiment, the influence of water-rock interaction on the strength of the core sample 2 is explored, so as to select a suitable immersion liquid.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A core immersion simulation experimental device, characterized in that: include: A soaking container (10), wherein the soaking container (10) has a reaction chamber (111), wherein the reaction chamber (111) contains a core sample (2) and a soaking liquid; a pressurizing system (20), the pressurizing system (20) being connected to the soaking container (10) and capable of pressurizing the reaction chamber (111); a heating system, the heating system being arranged on the soaking container (10) and being capable of heating the soaking container (10); A first stirring component (30), at least a portion of which extends into the reaction chamber (111) and stirs the soaking liquid in the reaction chamber (111) to enable the soaking liquid to flow dynamically.

2. The core immersion simulation experimental device according to claim 1, characterized in that: The pressurizing system (20) comprises: A booster pump (21); A stirring container (22), the stirring container (22) comprising a first accommodating chamber (221) and a second accommodating chamber (222) with variable volumes, the first accommodating chamber (221) being in communication with the pressure pump (21), the second accommodating chamber (222) being in communication with the reaction chamber (111), and the first accommodating chamber (221) containing an isolation liquid, and the second accommodating chamber (222) containing the immersion liquid.

3. The core immersion simulation experimental device according to claim 2, characterized in that: A piston (223) is movably provided inside the stirring container (22), and the piston (223) separates the first accommodating chamber (221) from the second accommodating chamber (222), and the volumes of the first accommodating chamber (221) and the second accommodating chamber (222) change with the movement of the piston (223).

4. The core immersion simulation experimental device according to claim 2, characterized in that: The pressurizing system (20) further comprises a second stirring component (23), at least a portion of which extends into the second accommodating chamber (222) and stirs the soaking liquid in the second accommodating chamber (222).

5. The core immersion simulation experimental device according to claim 2, characterized in that: The pressurizing system (20) further comprises: a plurality of pressure relief valves (24), at least one of the pressure relief valves (24) being respectively disposed at both ends of the stirring container (22); and / or A switch valve (25), wherein at least one switch valve (25) is provided between the pressure pump (21) and the stirring container (22).

6. The core immersion simulation experimental device according to any one of claims 1 to 5, characterized in that: The soaking container (10) comprises a main body (11) and a cover (12); the main body (11) has the reaction chamber (111) and an opening (112) communicating with the reaction chamber (111); the cover (12) covers the opening (112); and the first stirring component (30) comprises: A driving motor (31); A connecting shaft (32), one end of which is connected to a driving end of the driving motor (31); At least one set of propellers (33), the other end of the connecting shaft (32) passes through the avoidance hole of the cover body (12) and extends into the reaction chamber (111) and is drivingly connected to the propeller (33), and the propeller (33) includes a plurality of rotating blades, so that the rotating blades move relative to the soaking container (10).

7. The core immersion simulation experimental device according to any one of claims 1 to 5, characterized in that: The core immersion simulation experimental device further comprises at least one core container (40), wherein the core container (40) is arranged in the reaction chamber (111), the core container (40) has at least one shelf space (41), the core sample (2) is placed in the shelf space (41), and the outer surface of the core container (40) has a plurality of flow holes connected to the shelf space (41).

8. The core immersion simulation experimental device according to claim 7, characterized in that: The core immersion simulation experimental device further comprises a connecting piece (50), wherein the connecting piece (50) is arranged inside the reaction chamber (111), and one end of the connecting piece (50) is connected to the top inner wall of the immersion container (10), and the other end of the connecting piece (50) is connected to the core receiving piece (40), so that the core receiving piece (40) is suspended in the reaction chamber (111).

9. The core immersion simulation experimental device according to any one of claims 1 to 5, characterized in that: The core immersion simulation experimental device also includes: a pressure detection component (60), the pressure detection component (60) being arranged on the soaking container (10) and being capable of detecting the pressure of the reaction chamber (111); a safety valve (70), wherein the safety valve (70) is arranged on the soaking container (10); When the pressure detection element (60) detects that the pressure in the soaking container (10) is greater than a preset pressure value, the safety valve (70) is opened to release the pressure in the soaking container (10).

10. The core immersion simulation experimental device according to any one of claims 1 to 5, characterized in that: The core immersion simulation experimental device further comprises a vent valve (80), and the vent valve (80) is connected to the immersion container (10).

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