Deep rock three-directional seepage test structure and three-dimensional permeability real-time test system

Abstract

The present application relates to a deep rock three-way seepage test structure and a three-dimensional permeability real-time test system, comprising six pressure heads and a seepage system, and the six pressure heads are located in X, Y and Z axial directions in pairs; the six pressure heads are used for contacting the sample from six directions respectively, and a plurality of seepage holes are arranged at one end of each pressure head facing the sample; a seepage fluid channel in communication with the plurality of seepage holes is arranged in each pressure head; the seepage system comprises three seepage inlet pipes and three seepage outlet pipes; the three seepage inlet pipes are connected with the seepage fluid channels of one pressure head in X, Y and Z axial directions respectively; and the three seepage outlet pipes are connected with the seepage fluid channels of another pressure head in X, Y and Z axial directions respectively. The two pressure heads of each axis of the present application can constitute a seepage passage in the direction, and can be used for real-time monitoring of three-way permeability; and the unique three-way sealing structure of the present application can seal the 12 edges of the sample from each other, isolate the fluid at the edges of the sample from each other, and improve the accuracy of the three-way permeability test.

Description

Technical Field

[0001] This invention relates to the fields of rock mechanics and engineering technology, and in particular to a three-dimensional permeability real-time testing system for deep rock triaxial flow testing. Background Technology

[0002] my country is currently in a phase of rapid industrialization and urbanization, leading to an increasing demand for resources, while shallow Earth resources are gradually being depleted. The deep earth, deep sea, and deep space, however, hold vast resources and energy reserves, thus driving a gradual shift towards deeper environments. However, deep rocks exist within extremely complex seepage and temperature fields. The complex mechanical environment of deep rocks presents significant challenges to related engineering projects, making the conduct of deep rock mass physical and mechanical experiments of great importance.

[0003] Testing the permeability of gas or water in rocks is of great significance for engineering practice and industrial safety. Existing rock permeability testing systems often only measure permeability in a fixed direction (vertical direction), while actual engineering reservoirs are triaxial flow fields. Therefore, breakthroughs are urgently needed in developing triaxial flow experimental systems. Summary of the Invention

[0004] This application provides a three-dimensional permeability testing structure and a real-time three-dimensional permeability testing system for deep rocks to solve the above problems.

[0005] This application is achieved through the following technical solution:

[0006] The deep rock triaxial seepage test structure provided in this application includes 6 pressure heads and a seepage system. The 6 pressure heads are located in pairs in the X-axis direction, Y-axis direction and Z-axis direction. The 6 pressure heads are used to contact the sample from 6 directions. Each pressure head has several permeation holes arranged at the end facing the sample. Each pressure head has a seepage fluid channel, which is connected to several permeation holes.

[0007] The seepage system includes three seepage inlet pipes and three seepage outlet pipes; the three seepage inlet pipes are respectively connected to the seepage fluid channels of one pressure head in the X-axis direction, one pressure head in the Y-axis direction, and one pressure head in the Z-axis direction; the three seepage outlet pipes are respectively connected to the seepage fluid channels of another pressure head in the X-axis direction, another pressure head in the Y-axis direction, and another pressure head in the Z-axis direction.

[0008] Optionally, the three seepage inlet pipes are connected to the plunger pump via a 4-way valve.

[0009] Specifically, valves are installed on the three inlet pipes and the three outlet pipes.

[0010] Optionally, the pressure head includes a pressure head body and a permeation pad. The pressure head body has a forward-protruding rectangular protrusion at its front end, and the front face of the rectangular protrusion has an integrally manufactured rectangular groove. The permeation pad is embedded in the rectangular groove. A plurality of permeation holes are evenly arranged on the permeation pad, and the permeation holes penetrate the permeation pad from front to back. The permeation fluid channel is located in the pressure head body, one end of the permeation fluid channel is connected to the rectangular groove, and the other end of the permeation fluid channel penetrates the side of the pressure head body.

[0011] Specifically, 6 pressure heads are connected together by 12 elastic plates, and each pressure head is connected to 4 pressure heads around its perimeter by an elastic plate.

[0012] The real-time three-dimensional permeability testing system for deep rocks provided in this application adopts the aforementioned three-dimensional permeation testing structure for deep rocks. The edge of the pressure head facing the sample has an annular sealing groove, and the plurality of permeation holes are located inside the annular sealing groove. A sealing fluid injection channel is provided inside the pressure head, one end of which is connected to the annular sealing groove, and the other end of which penetrates the outer surface of the pressure head body.

[0013] Specifically, the real-time testing system for three-dimensional permeability of deep rocks also includes the hydraulic sealing system, which includes a sealing inlet pipe, six sealing outlet pipes, and a flow divider assembly. The flow divider assembly has one inlet and six outlets, with each of the six outlets connected to one of the sealing outlet pipes. The inlet pipe is connected to a high-pressure plunger pump via the sealing inlet pipe. The six sealing outlet pipes are each connected to the outer end of the sealing fluid injection channel of one of the pressure heads.

[0014] In particular, it also includes a sample fixture, which includes a rigid outer cube frame and a flexible inner cube frame. Both the rigid outer cube frame and the flexible inner cube frame have 12 frame edges. All six faces of the rigid outer cube frame and the flexible inner cube frame are rectangular frames. The 12 outer corners of the flexible inner cube frame are aligned with the 12 inner corners of the rigid outer cube frame.

[0015] The flexible inner cubic frame can hold a cubic sample. The end of the six indenters that contacts the sample can extend into the sample fixture from the six openings in the six directions of the frame. Each face of the flexible inner cubic frame has an integrally manufactured annular flange that is adapted to the annular sealing groove of the indenter. The annular sealing groove of the indenter is equipped with a circumferential sealing strip, which has an annular groove that is adapted to the annular flange.

[0016] The cubic sample is housed within a flexible inner cubic frame. Six pressure heads, one end of which is used to contact the sample, extend into the sample holder and contact the six faces of the cubic sample respectively. The six annular flanges of the flexible inner cubic frame are inserted into the annular grooves of the circumferential sealing strips of the six pressure heads. The front end face of the pressure head is equipped with an acoustic emission probe, an ultrasonic probe, a heat flow probe, and a temperature sensing probe.

[0017] In particular, the 12 inner corner positions of the flexible inner cube frame have right-angled edge structures that are adapted to the corners of the cube sample.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] 1. The six pressure heads of the deep rock three-dimensional permeability test structure of this application are placed in pairs in the X-axis, Y-axis and Z-axis directions. The two pressure heads in each axis can form the permeability path in that direction, which can be used for real-time monitoring of three-dimensional permeability. This application can also be used for permeation experiments in any inlet and outlet direction.

[0020] 2. The unique three-way sealing structure of this application can seal the 12 edges of the sample to each other, preventing fluid from flowing between the edges of the sample and improving the accuracy of the three-way permeability test. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of this application and form part of this application, do not constitute a limitation on the embodiments of the present invention.

[0022] Figure 1 This is a 3D diagram of the real-time three-dimensional permeability testing system for deep rocks in the embodiment;

[0023] Figure 2 This is a front view of the real-time three-dimensional permeability testing system for deep rocks in the embodiment;

[0024] Figure 3 yes Figure 2 Sectional view at point AA;

[0025] Figure 4 yes Figure 2 Sectional view at point BB;

[0026] Figure 5 yes Figure 2 Sectional view at CC;

[0027] Figure 6 This is a three-dimensional view of the elastic sealing pressure box in the embodiment;

[0028] Figure 7 This is a cross-sectional view of the elastic sealing pressure box in the embodiment;

[0029] Figure 8 This is a three-dimensional view of the six indenters docked with the sample fixture in the embodiment;

[0030] Figure 9 This is a front view of the six indenters docked with the sample fixture in the embodiment;

[0031] Figure 10 yes Figure 9 Sectional view at point DD;

[0032] Figure 11 yes Figure 9 Sectional view at EE;

[0033] Figure 12 This is a three-dimensional view of the pressure head in the embodiment;

[0034] Figure 13 This is a cross-sectional view of the pressure head in the embodiment;

[0035] Figure 14 This is a three-dimensional view of the sample fixture in the embodiment;

[0036] Figure 15 This is a cross-sectional view of the sample fixture in the embodiment;

[0037] Figure 16 This is a three-dimensional view of the flexible inner cubic frame in the embodiment;

[0038] Figure 17 This is a cross-sectional view of the flexible inner cube frame in the embodiment. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. It should also be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] like Figures 1-5 As shown, the real-time three-dimensional permeability testing system for deep rocks disclosed in this embodiment includes an elastic sealing pressure box 100, a seepage system, and a hydraulic sealing system 300.

[0046] The seepage system includes three seepage inlet pipes 202, three seepage outlet pipes 201, and a plunger pump (not shown in the figure). The three seepage inlet pipes 202 are connected to the plunger pump through a 4-way valve (not shown in the figure), forming a 1-inlet and 3-outlet effect. Valves 203 are installed on the three seepage inlet pipes 202 and the three seepage outlet pipes 201 respectively.

[0047] The three outflow pipes 201 are connected to the flow meter, which can monitor the fluid outflow rate in real time.

[0048] The hydraulic sealing system 300 includes a sealing inlet pipe 301, six sealing outlet pipes 302, a flow divider assembly 303, and a high-pressure plunger pump (not shown in the figure). The flow divider assembly 303 has one inlet and six outlets. The six outlets are connected to one of the sealing outlet pipes 302 respectively. The one inlet is connected to the high-pressure plunger pump through the sealing inlet pipe 301. The high-pressure plunger pump can provide a sealing pressure of 60MPa.

[0049] In one possible design, the sealed outlet pipe 302 is a high-temperature and high-pressure alloy pipe.

[0050] like Figure 6 As shown in Figure 11, the elastic sealing pressure box 100 includes six pressure heads 1, which are located in three axial directions. In this paper, the three axial directions refer to the X-axis, Y-axis, and Z-axis directions in a three-axis coordinate system. The six pressure heads are: two pressure heads 1 symmetrically arranged in the X-axis direction, two pressure heads 1 symmetrically arranged in the Y-axis direction, and two pressure heads 1 symmetrically arranged in the Z-axis direction.

[0051] In one possible design, the front end face of the pressure head 1 is equipped with miniature high-rigidity sensing devices such as an acoustic emission probe, an ultrasonic probe, a heat flow probe, and a temperature sensing probe.

[0052] It is worth noting that, such as Figure 12 , Figure 13 As shown, the pressure head 1 includes a pressure head body 11 and a permeation pad 12. The pressure head body 11 has a forward-protruding rectangular protrusion 111 at its front end, and the front face of the rectangular protrusion 111 has an integrally manufactured rectangular groove. The permeation pad 12 is fitted into the rectangular groove by screws. The permeation pad 12 has a plurality of permeation holes 121 evenly arranged on it, and the permeation holes 121 penetrate the permeation pad 12 from front to back.

[0053] The front edge of the pressure head body 11 has an annular sealing groove, and a rectangular protrusion 111 is located inside the annular sealing groove. A circumferential sealing strip 13 is installed inside the annular sealing groove. The pressure head body 11 is provided with a seepage fluid channel 14 and a sealing fluid injection channel 15. One end of the seepage fluid channel 14 passes through the rectangular groove, and the other end passes through the outer surface of the pressure head body 11. One end of the sealing fluid injection channel 15 is connected to the annular sealing groove, and the other end of the sealing fluid injection channel 15 passes through the outer surface of the pressure head body 11.

[0054] The three inlet pipes 202 of the seepage system are respectively connected to the outer ends of the seepage fluid channels 14 of one of the pressure heads 1 in the X-axis direction, one of the pressure heads 1 in the Y-axis direction, and one of the pressure heads 1 in the Z-axis direction; the three outlet pipes 201 are respectively connected to the seepage fluid channels 14 of the other pressure head 1 in the X-axis direction, another pressure head 1 in the Y-axis direction, and another pressure head 1 in the Z-axis direction. Fluids of different temperatures and pressures can be injected through the seepage fluid channels 14 according to experimental requirements, and the fluid can flow uniformly to the sample through the permeation holes 121.

[0055] The six sealing outlet pipes 302 of the hydraulic sealing system 300 are respectively connected to the outer ends of the sealing fluid injection channels 15 of the six pressure heads 1. Sealing fluid can be injected into the annular sealing groove through the sealing fluid injection channels 15 to prevent seepage fluid from flowing out from the edge of the cubic sample 4.

[0056] In one possible design, the seepage fluid channel 14 is L-shaped, with one end of the seepage fluid channel 14 perpendicularly penetrating the rectangular groove and the other end perpendicularly penetrating the side of the pressure head 1.

[0057] In one possible design, the sealing fluid injection channel 15 is L-shaped, with one end of the sealing fluid injection channel 15 perpendicularly penetrating the annular sealing groove and the other end perpendicularly penetrating the side of the pressure head 1.

[0058] In one possible design, the circumferential sealing strip 13 has an annular groove with the opening facing forward. Alternatively, the cross-section of the circumferential sealing strip 13 may be a U-shaped structure with the opening facing outward.

[0059] Optionally, the circumferential sealing strip 13 is made of high-strength rubber.

[0060] To facilitate docking with external components, the rear end of the pressure head body 11 is provided with a docking interface.

[0061] In one possible design, such as Figure 6 As shown, at least 8 elastic sheets 2 are used to connect 6 pressure heads 1 together.

[0062] It is worth noting that the number of elastic plates 2 can be set reasonably according to needs. In this embodiment, 12 elastic plates 2 are used to connect 6 pressure heads 1 together, and each pressure head 1 is connected to the four pressure heads 1 around its perimeter by an elastic plate 2. Of course, in another possible design, more elastic plates 2 can be used to connect the 6 pressure heads 1 together.

[0063] Optionally, the outer end of the pressure head 1 is provided with spring plate grooves that are adapted to the elastic plates 2. The spring plate grooves are provided with screw holes. The two ends of each elastic plate 2 are respectively placed in the spring plate grooves and connected to the two pressure heads 1 by screws.

[0064] In one possible design, the resilient sealing pressure box 100 also includes a sample holder 3 adapted to the six pressure heads 1, such as... Figures 7-10 As shown, the sample clamp 3 is used to fix the cubic sample 4 inside it, while also requiring openings in six directions for the six indenters 1 to pass through, so that the indenters 1 can contact the cubic sample 4 inside them. In one possible design, such as Figure 14 , Figure 15 As shown, the sample fixture 3 includes a rigid outer cube frame 31 and a flexible inner cube frame 32. The rigid outer cube frame 31 has 12 rigid frame edges, and all 6 faces of the rigid outer cube frame 31 are rectangular frames.

[0065] A cubic sample 4 can be installed inside the flexible inner cubic frame 32. The flexible inner cubic frame 32 has 12 frame edges 321, and all 6 faces of the flexible inner cubic frame 32 are rectangular frames that are adapted to the rectangular pressure head 1. The flexible inner cubic frame 32 is manufactured as a single piece.

[0066] In one possible design, such as Figure 16 , Figure 17 As shown, each face of the flexible inner cubic frame 32 has an integrally manufactured annular flange 322, which is adapted to the annular sealing groove of the pressure head 1 for tightly fitting into the pressure head 1. Figure 13 As shown, the circumferential sealing strip 13 has an annular groove that is adapted to the annular flange 322, and the annular flange 322 is operably installed in the annular groove of the circumferential sealing strip 13.

[0067] The 12 outer corner positions 323 of the flexible inner cube frame 32 are closely fitted with the 12 inner corner positions of the rigid outer cube frame 31. In one possible design, the 12 inner corner positions of the flexible inner cube frame 32 have right-angled side structures 324 that are adapted to the corners of the cube sample 4.

[0068] In one possible design, the pressure head 1 is fitted with the rectangular opening of the rigid outer cubic frame 31, and the two can be kept relatively fixed by friction. The rectangular protrusion 111 of the pressure head 1 is fitted with the rectangular opening of the flexible inner cubic frame 32.

[0069] In one possible design, the flexible inner cubic frame 32 is a wear-resistant, pressure-resistant, and high-strength rubber frame, while the rigid outer cubic frame 31 is a metal frame.

[0070] In one possible design, a 100*100*100mm cubic sample 4 can be installed inside the flexible inner cubic frame 32.

[0071] The cube sample 4 is placed inside the flexible inner cube frame 32 of the sample fixture 3. The 12 edges of the cube sample 4 are aligned with the 12 inner edges of the flexible inner cube frame 32. The front ends of the 6 pressure heads 1 extend from the frame openings of the sample fixture 3 in 6 directions to contact the surface of the cube sample 4. The annular flanges 322 of the flexible inner cube frame 32 in 6 directions are inserted into the annular grooves of the circumferential sealing strips 13 of the 6 pressure heads 1.

[0072] During the experiment, a predetermined triaxial stress was applied to the cubic sample 4 by six pressure heads 1. At the same time, sealing fluid was injected into the sealing fluid injection channel 15 of the six pressure heads 1 by a high-pressure plunger pump, so that the 12 edges of the cubic sample 4 were tightly fitted with the flexible inner cubic frame 32, achieving a triaxial sealing effect and preventing seepage fluid from flowing out from the edge of the cubic sample 4.

[0073] Subsequently, a three-dimensional penetration test was conducted.

[0074] This application can also be used for seepage experiments in any inlet / outlet direction, such as the XY direction, XZ direction, YZ direction, X-YZ direction, etc.

[0075] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A real-time testing system for three-dimensional permeability of deep rock, characterized in that: Includes a three-dimensional seepage test structure for deep rock: The deep rock triaxial seepage test structure includes a seepage system and six pressure heads (1). The six pressure heads (1) are located in pairs in the X-axis direction, Y-axis direction, and Z-axis direction. The six pressure heads (1) are used to contact the sample from six directions. Each pressure head (1) has several permeation holes (121) arranged at one end facing the sample. Each pressure head (1) has a seepage fluid channel (14) inside, which is connected to several permeation holes (121). The seepage system includes three seepage inlet pipes (202) and three seepage outlet pipes (201); the three seepage inlet pipes (202) are respectively connected to the seepage fluid channels (14) of one of the pressure heads (1) in the X-axis direction, one of the pressure heads (1) in the Y-axis direction, and one of the pressure heads (1) in the Z-axis direction; the three seepage outlet pipes (201) are respectively connected to the seepage fluid channels (14) of another pressure head (1) in the X-axis direction, another pressure head (1) in the Y-axis direction, and another pressure head (1) in the Z-axis direction; the pressure head (1) has an annular sealing groove at one end facing the sample, and the plurality of permeation holes (121) are located inside the annular sealing groove; the pressure head (1) is provided with a sealing fluid injection channel (15), one end of the sealing fluid injection channel (15) is connected to the annular sealing groove, and the other end of the sealing fluid injection channel (15) penetrates the outer surface of the pressure head body (11); The pressure head (1) includes a pressure head body (11) and a permeation pad (12). The permeation pad (12) is embedded in a rectangular groove at the front end of the pressure head body (11). A number of permeation holes (121) are evenly arranged on the permeation pad (12), and the permeation holes (121) penetrate the permeation pad (12) from front to back. The pressure head (1) has an annular sealing groove containing an annular sealing strip (13), and the annular sealing strip (13) has an annular groove that is adapted to the annular flange (322).

2. The real-time deep rock three-dimensional permeability testing system according to claim 1, characterized in that: The three seepage inlet pipes (202) are connected to the plunger pump via a 4-way valve.

3. The real-time deep rock three-dimensional permeability testing system according to claim 1, characterized in that: Valves (203) are installed on the three seepage inlet pipes (202) and the three seepage outlet pipes (201).

4. The real-time deep rock three-dimensional permeability testing system according to claim 1, characterized in that: The front end of the pressure head body (11) has a forward-protruding rectangular protrusion (111), and the front end face of the rectangular protrusion (111) has an integrally manufactured rectangular groove. The seepage fluid channel (14) is located inside the pressure head body (11). One end of the seepage fluid channel (14) is connected to the rectangular groove, and the other end of the seepage fluid channel (14) passes through the side of the pressure head body (11).

5. The real-time testing system for three-dimensional permeability of deep rocks according to any one of claims 1-4, characterized in that: It also includes a hydraulic sealing system (300), which includes a sealing inlet pipe (301), six sealing outlet pipes (302) and a flow divider assembly (303). The flow divider assembly (303) has one inlet and six outlets. The six outlets are connected to one of the sealing outlet pipes (302) respectively, and the one inlet is connected to the high-pressure plunger pump through the sealing inlet pipe (301). The six sealing outlet pipes (302) are connected to the outer end of the sealing fluid injection channel (15) of one of the pressure heads (1) respectively.

6. The real-time three-dimensional permeability testing system for deep rocks according to claim 1, characterized in that: It also includes a sample fixture (3), which includes a rigid outer cube frame (31) and a flexible inner cube frame (32). Both the rigid outer cube frame (31) and the flexible inner cube frame (32) have 12 frame edges. The six faces of the rigid outer cube frame (31) and the flexible inner cube frame (32) are rectangular frames. The 12 outer corner positions (323) of the flexible inner cube frame (32) are in contact with the 12 inner corner positions of the rigid outer cube frame (31). The flexible inner cubic frame (32) can hold a cubic sample (4), and the end of the six pressure heads (1) that are in contact with the sample can be inserted into the sample clamp (3) from the six openings of the sample clamp (3) in six directions. Each face of the flexible inner cubic frame (32) has an integrally manufactured annular flange (322) that is adapted to the annular sealing groove of the pressure head (1).

7. The real-time three-dimensional permeability testing system for deep rocks according to claim 6, characterized in that: The six indenters (1) are connected together by 12 elastic plates (2). Each indenter (1) is connected to the four indenters (1) around it by an elastic plate (2). The 12 elastic plates (2) are located outside the sample clamp (3).

8. The real-time three-dimensional permeability testing system for deep rocks according to claim 6, characterized in that: The cube specimen (4) is installed in the flexible inner cube frame (32), and the end of the six pressure heads (1) that are in contact with the specimen extends into the specimen clamp (3) and respectively contacts the six faces of the cube specimen (4). The six annular flanges (322) of the flexible inner cubic frame (32) are inserted into the annular grooves of the circumferential sealing strips (13) of the six pressure heads (1); The front end face of the pressure head (1) is equipped with an acoustic emission probe, an ultrasonic probe, a heat flow probe, and a temperature sensing probe.

9. The real-time three-dimensional permeability testing system for deep rocks according to claim 6, characterized in that: The flexible inner cube frame (32) has right-angled side structures (324) at the 12 inner corner positions that are adapted to the corners of the cube specimen (4).

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