CO2 environment temperature-stress-seepage-chemical multi-field coupling rheological testing device

Abstract

The invention discloses a CO2 environment temperature-stress-seepage-chemical multi-field coupling rheological testing device, and relates to the technical field of rock mechanics tests, the CO2 environment temperature-stress-seepage-chemical multi-field coupling rheological testing device comprises a reaction kettle, a feed inlet and a treatment box, the treatment box is installed on the left side of the outer wall of the reaction kettle, and the feed inlet is installed on the left side of the outer wall of the treatment box; a connecting valve is installed at the joint of the treatment box and the feeding port, a controller is installed on the front side of the outer wall of the reaction kettle, a packaging bag is installed in the middle of the inner wall of the reaction kettle, a feeding valve is arranged on the upper side of the outer wall of the packaging bag, and a discharging valve is installed on the lower side of the outer wall of the packaging bag. By installing the packaging bag, the feeding valve and the discharging valve, the function of switching packaging media according to rock types and testing contents is achieved, the problems that rock mass adaptability is poor, the testing period is long and the testing result is inaccurate are solved, different packaging media and multi-field coupling environment simulation can be dynamically switched, and the testing efficiency is improved. And the detection efficiency and the detection precision of the device are improved.

Description

Technical Field

[0001] This invention relates to the field of rock mechanics testing technology, specifically to a CO2 ambient temperature-stress-seepage-chemical multi-field coupled rheological testing device. Background Technology

[0002] When CO2 is injected into rock formations in a supercritical state, it creates a significant temperature difference with the surrounding strata, leading to changes in fluid density and viscosity, which affects the seepage path and storage efficiency. Traditional early equipment lacked the ability to control the chemical field and temperature field simultaneously, making it difficult to predict the risk of fault activation after the expansion of caprock fractures. Moreover, deep rock formations are often in a state of high temperature, high confining pressure and chemical corrosion coupling, and traditional single-field testing cannot reflect the true mechanical response.

[0003] During the switching between different test contents, traditional sample loading requires disassembling the pressure chamber, interrupting the temperature and pressure environment, which leads to relaxation of preload stress in hard rock, affecting rheological data. Residual encapsulation material can clog sandstone pores or change the chemical composition of the solution, resulting in inaccurate final test data.

[0004] Patent CN108120819B discloses a high-parameter experimental system and testing method for simulating fluid-structure interaction in carbon dioxide dry fracturing of shale gas reservoirs, which is implemented by the aforementioned patent.

[0005] The aforementioned patent enables the preparation of CO2 dry fracturing fluid required for experiments at any time through a pressurized fluid supply unit, which is then pumped into a circulating flow unit and a coupling reaction unit. The coupling reaction unit simulates actual working conditions to study the variation of the coupling effect between liquid / supercritical CO2 and shale with factors such as temperature, pressure, and shear rate. Furthermore, through subsequent analysis of water and shale samples, the mechanism of shale property modification by the coupling effect can be obtained. This has significant guiding significance for the later-stage modification and production capacity evaluation of shale gas reservoirs, and there is room for optimization in the replacement method and efficiency of rock encapsulation media.

[0006] Therefore, this application proposes a CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device that allows switching of the encapsulation medium according to rock type and test content. Summary of the Invention

[0007] The purpose of this invention is to provide a CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device to solve the technical problems mentioned in the background art, such as the cumbersome replacement of rock encapsulation media and the impact on testing accuracy.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device, comprising a reactor, a feed inlet, and a processing box. The processing box is installed on the left side of the outer wall of the reactor, and the feed inlet is installed on the left side of the outer wall of the processing box. A connecting valve is installed at the connection between the processing box and the feed inlet. A controller is installed on the front side of the outer wall of the reactor. A sealing bag is installed in the middle of the inner wall of the reactor. A feed valve is provided on the upper side of the outer wall of the sealing bag, and a discharge valve is installed on the lower side of the outer wall of the sealing bag. The feed valve and the discharge valve are connected to a medium tank installed on the lower side of the outer wall of the reactor via connecting pipes. A discharge valve is installed on the left side of the outer wall of the sealing bag, and the sealing bag is connected to the processing box via the discharge valve. The connecting valve, feed valve, discharge valve, and discharge valve are respectively connected to the controller via signal lines.

[0009] Preferably, telescopic pipes are installed on the upper and lower sides of the inner wall of the reactor. The telescopic pipes are connected to a switcher installed on the rear side of the outer wall of the medium tank via a connecting shaft. The feed valve is connected to the first pressurizing chamber installed on the upper side of the outer wall of the medium tank via the telescopic pipes and connecting pipes. The first pressurizing chamber is connected to the medium tank via a first switching valve. A pressurizing rod is installed in the middle of the inner wall of the first pressurizing chamber. Balance pipes are provided on the upper and lower sides of the outer wall of the pressurizing rod. The pressurizing rod is connected to the switcher at the output end of the switching motor via a connecting shaft. The switching motor, the switcher, and the first switching valve are respectively connected to the controller via signal lines.

[0010] Preferably, a conveyor belt is installed in the middle of the inner wall of the processing box. The conveyor belt is connected to a switch at the output end of the processing motor installed on the lower side of the outer wall of the processing box via a connecting shaft. First heaters are installed on the front and rear sides of the outer wall of the processing box. Temperature sensors are installed on the upper and lower sides of the inner wall of the processing box. The temperature sensors are connected to the first heaters via signal lines. A first pressure sensor is installed on the right side of the outer wall of the temperature sensor. The processing motor and the first pressure sensor are respectively connected to the controller via signal lines. A pressurizing pump is installed on the lower side of the outer wall of the processing box. A vacuum pump is installed on the right side of the outer wall of the pressurizing pump. The pressurizing pump and the vacuum pump are connected to the processing box via a connecting pipe. The pressurizing pump and the vacuum pump are connected to the switch at the output end of the processing motor via a connecting shaft.

[0011] Preferably, a push rod is installed on the right side of the outer wall of the reactor. The push rod is connected to a switcher at the output end of the switching motor via a connecting shaft. The push rod is connected to a push valve installed on the right side of the outer wall of the packaging bag. A nozzle is installed on the upper side of the processing box. The nozzle is connected to a liquid tank installed on the lower side of the outer wall of the processing box via a connecting pipe. A second pressurizing chamber is installed at the connection between the liquid tank and the nozzle. The second pressurizing chamber is connected to the liquid tank via a second switching valve. The second switching valve is connected to a controller via a signal line. The internal configuration of the second pressurizing chamber is the same as that of the first pressurizing chamber. A movable unit is installed on the upper side of the outer wall of the nozzle. The movable unit is connected to a vision sensor installed on the left side of the outer wall of the nozzle via a signal line.

[0012] Preferably, the discharge valve is connected to a recovery tank installed on the rear side of the outer wall of the medium tank via a connecting pipe. The recovery tank is connected to the processing tank via a connecting pipe. An ion concentration meter is installed at the output end of the discharge valve. A reflux valve is installed on the front side of the outer wall of the recovery tank. The reflux valve is connected to the medium tank via a connecting pipe. The ion concentration meter and the reflux valve are connected to the controller via signal lines. A filter screen is installed on the upper side of the inner wall of the recovery tank. A separation unit is installed on the lower side of the outer wall of the filter screen. The separation unit is connected to the reflux valve via a connecting pipe.

[0013] Preferably, a second heater is installed on the front and rear sides of the inner wall of the reactor, an infrared imager is installed on the upper and lower sides of the inner wall of the reactor, an acoustic emission sensor is installed at the connection between the reactor and the packaging bag, a strain gauge is embedded in the inner wall of the packaging bag, a second pressure sensor is installed at the connection between the feed valve and the first pressurization chamber, and a flow meter and a differential pressure sensor are installed at the connection between the feed valve and the discharge valve and the packaging bag. The second heater, infrared imager, acoustic emission sensor, strain gauge, second pressure sensor, flow meter and differential pressure sensor are connected to the controller via signals.

[0014] Preferably, the vacuum pump is connected to the telescopic pipe on one side of the discharge valve via a connecting pipe, and a third switching valve is installed at the connection between the vacuum pump and the telescopic rod. The third switching valve is connected to the controller via a signal line.

[0015] Preferably, the movable unit includes: a slide, a slider, a telescopic shaft, and a rotating shaft;

[0016] A sliding groove is installed on the upper side of the inner wall of the treatment box. A slider is installed in the middle of the inner wall of the sliding groove. A telescopic shaft is installed on the lower side of the outer wall of the slider. A rotating shaft is installed on the lower side of the outer wall of the telescopic shaft. The slider, telescopic shaft and rotating shaft are connected to the switch at the output end of the cleaning motor installed on the upper side of the outer wall of the treatment box through connecting shafts. The cleaning motor is connected to the controller through signal lines.

[0017] Preferably, the separation unit includes: a separation box, a rotary table, a speed sensor, a separation port, and a feeding box;

[0018] A separation box is installed on the lower side of the outer wall of the filter screen. A rotating table is installed on the lower side of the outer wall of the separation box. A speed sensor is installed at the connection between the rotating table and the separation box. A separation port is installed in the middle of the outer wall of the separation box. The separation port is connected to the liquid tank and the return valve respectively through connecting pipes. A feeding box is installed in the middle of the inner wall of the separation box. The rotating table, speed sensor and feeding box are connected to the controller through signal lines.

[0019] Preferably, a partition plate is installed on the lower side of the outer wall of the nozzle, and the partition plate is connected to the switch at the output end of the processing motor via a connecting shaft.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This invention, by installing a sealing bag, a feed valve, and a discharge valve, realizes the function of switching the sealing medium according to the rock type and test content, which solves the problems of poor rock mass adaptability, long test cycle and inaccurate test results. It can dynamically switch different sealing media and simulate multi-field coupling environment, thereby improving the detection efficiency and detection accuracy of the device.

[0022] 2. This invention, by installing a processing box, realizes the function of restoring the rock to its original state, solves the problems of new cracks caused by thermal expansion and inaccurate test results, can restore the rock to its initial state, improves the detection accuracy and reliability of the device, reduces energy consumption, and improves the economic benefits of the device;

[0023] 3. This invention, by installing a push rod, a movable unit, and a nozzle, achieves the function of quickly cleaning rocks, solving the problems of cross-contamination, errors in test results, and low detection efficiency. It can remove residues from the surface of cleaned rocks and restore them to their initial state, thereby improving the detection efficiency and accuracy of the test results.

[0024] 4. This invention, by installing a recycling bin and a reflux valve, achieves the function of effectively recycling the packaging medium, solving the problems of low recycling efficiency, performance degradation and environmental pollution. It can separate the packaging medium from rock residue, reduce resource consumption and environmental pollution, and improve the economic benefits of the device. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the processing box and reaction vessel of the present invention;

[0027] Figure 3 This is a schematic diagram of the reactor and media tank structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the first pressurization chamber structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the processing box structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the active unit and liquid tank structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the reactor and recovery tank structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the processing box and recycling box of the present invention.

[0033] In the diagram: 1. Reactor; 2. Inlet; 3. Processing tank; 4. Connecting valve; 5. Controller; 6. Sealing bag; 7. Feed valve; 8. Discharge valve; 9. Medium tank; 10. Discharge valve; 11. Telescopic pipe; 12. Switching motor; 13. Switcher; 14. First pressurizing chamber; 15. First switching valve; 16. Pressurizing rod; 17. Balance pipe; 18. Conveyor belt; 19. Processing motor; 20. First heater; 21. Temperature sensor; 22. First pressure sensor; 23. Pressurizing pump; 24. Vacuum pump; 25. Push rod; 26. Backward valve; 27. Nozzle; 28. Liquid tank; 29. 30. Second pressurization chamber; 31. Second switching valve; 32. Vision sensor; 33. Recovery box; 34. Ion concentration meter; 35. Reflux valve; 36. Filter screen; 37. Second heater; 38. Infrared imager; 39. Acoustic emission sensor; 40. Strain gauge; 41. Second pressure sensor; 42. Flow meter; 43. Differential pressure sensor; 44. Third switching valve; 45. Slide chute; 46. Sliding block; 47. Telescopic shaft; 48. Rotating shaft; 49. Cleaning motor; 50. Separation box; 51. Rotary table; 52. Speed ​​sensor; 53. Separation port; 54. Feeding box; 55. Divider plate. Detailed Implementation

[0034] The technical solutions of 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device includes a reactor 1, a feed inlet 2, and a processing tank 3. The processing tank 3 is installed on the left side of the outer wall of the reactor 1, and the feed inlet 2 is installed on the left side of the outer wall of the processing tank 3. A connecting valve 4 is installed at the connection between the processing tank 3 and the feed inlet 2. A controller 5 is installed on the front side of the outer wall of the reactor 1. A sealing bag 6 is installed in the middle of the inner wall of the reactor 1. A feed valve 7 is provided on the upper side of the outer wall of the sealing bag 6, and a discharge valve 8 is installed on the lower side of the outer wall of the sealing bag 6. The feed valve 7 and the discharge valve 8 are connected to a medium tank 9 installed on the lower side of the outer wall of the reactor 1 through a connecting pipe. A discharge valve 10 is installed on the left side of the outer wall of the sealing bag 6, and the sealing bag 6 is connected to the processing tank 3 through the discharge valve 10. The connecting valve 4, the feed valve 7, the discharge valve 8, and the discharge valve 10 are respectively connected to the controller 5 through signal lines.

[0038] The reactor 1 has telescopic pipes 11 installed on the upper and lower sides of its inner wall. The telescopic pipes 11 are connected to the switch 13 at the output end of the switching motor 12 installed on the rear side of the outer wall of the medium tank 9 via a connecting shaft. The feed valve 7 is connected to the first pressurizing chamber 14 installed on the upper side of the outer wall of the medium tank 9 via the telescopic pipes 11 and the connecting pipe. The first pressurizing chamber 14 is connected to the medium tank 9 via the first switching valve 15. A pressurizing rod 16 is installed in the middle of the inner wall of the first pressurizing chamber 14. Balance pipes 17 are provided on the upper and lower sides of the outer wall of the pressurizing rod 16. The pressurizing rod 16 is connected to the switch 13 at the output end of the switching motor 12 via a connecting shaft. The switching motor 12, the switch 13 and the first switching valve 15 are respectively connected to the controller 5 via signal lines.

[0039] Furthermore, when testing the processed rock sample, the controller 5 controls the first switching valve 15 to connect the medium tank 9 and the first pressurizing chamber 14. The controller 5 controls the switch 13 at the output of the switching motor 12 to connect to the pressurizing rod 16. Driven by the switching motor 12, the pressurizing rod 16 reciprocates, drawing the encapsulation medium stored in the medium tank 9 into the first pressurizing chamber 14. Under the pressure balance of the balance tube 17, the pressurizing rod 16 pressurizes the encapsulation medium and then transports it through the connecting tube into the telescopic tube 11. When the rock sample enters the encapsulation bag 6, the controller 5 controls the switching of the telescopic tube 11. The switch 13 at the output of motor 12 is connected to the telescopic tube 11 and controls the feed valve 7 to open. Driven by the switching motor 12, the telescopic tube 11 extends into the feed valve 7, and then the feed valve 7 is closed to lock the telescopic tube 11. The encapsulation medium, after passing through the first pressurization chamber 14, is transported from the telescopic tube 11 into the encapsulation bag 6. When testing different types of rock samples, the controller 5 switches the connection between the medium tank 9 and the first pressurization chamber 14 through the first switching valve 15 according to the type of rock sample input by the operator, so that the encapsulation medium extracted into the first pressurization chamber 14 can be adapted to the type of rock. For porous and erosion-sensitive rocks such as carbonate rocks and coal, low water-to-rock ratio silicone oil or fluorinated liquid is used as the encapsulation medium. For highly brittle crystalline rocks such as granite and basalt, rigid nanogel is used as the encapsulation medium. For fractured or fissured rock masses such as fault breccia and grouting consolidation bodies, modified epoxy resin is used as the encapsulation medium. When switching test items, the controller 5 controls the switch 13 at the output of the switching motor 12 to connect to the telescopic pipe 11 on one side of the discharge valve 8. Under the drive of the switching motor 12, the telescopic pipe 11 on the side of the discharge valve 8 comes close to the discharge valve 8, and the controller 5 controls the discharge valve 8. Open, and simultaneously connect the telescopic pipe 11 on one side of the feed valve 7 and the feed valve 7. After the controller 5 switches the encapsulation medium through the first switching valve 15, the encapsulation medium processed by the first pressurization chamber 14 is transported into the encapsulation bag 6. When conducting temperature testing, the encapsulation medium in the encapsulation bag 6 is high-viscosity silicone oil. When conducting stress testing, the encapsulation medium in the encapsulation bag 6 is perfluoropolyether oil. When conducting percolation testing, the encapsulation medium in the encapsulation bag 6 is deionized water, ion-proportioned solution, or supercritical CO2. When conducting chemical testing, the encapsulation medium in the encapsulation bag 6 is CO2 saturated acidic solution or solution containing mineralized ions.

[0040] Example 2: Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6A CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device includes a reactor 1, a feed inlet 2, and a processing tank 3. The processing tank 3 is installed on the left side of the outer wall of the reactor 1, and the feed inlet 2 is installed on the left side of the outer wall of the processing tank 3. A connecting valve 4 is installed at the connection between the processing tank 3 and the feed inlet 2. A controller 5 is installed on the front side of the outer wall of the reactor 1. A sealing bag 6 is installed in the middle of the inner wall of the reactor 1. A feed valve 7 is provided on the upper side of the outer wall of the sealing bag 6, and a discharge valve 8 is installed on the lower side of the outer wall of the sealing bag 6. The feed valve 7 and the discharge valve 8 are connected to a medium tank 9 installed on the lower side of the outer wall of the reactor 1 through a connecting pipe. A discharge valve 10 is installed on the left side of the outer wall of the sealing bag 6, and the sealing bag 6 is connected to the processing tank 3 through the discharge valve 10. The connecting valve 4, the feed valve 7, the discharge valve 8, and the discharge valve 10 are respectively connected to the controller 5 through signal lines.

[0041] A conveyor belt 18 is installed in the middle of the inner wall of the processing box 3. The conveyor belt 18 is connected to the switch 13 at the output end of the processing motor 19 installed on the lower side of the outer wall of the processing box 3 via a connecting shaft. A first heater 20 is installed on the front and rear sides of the outer wall of the processing box 3. A temperature sensor 21 is installed on the upper and lower sides of the inner wall of the processing box 3. The temperature sensor 21 is connected to the first heater 20 via a signal line. A first pressure sensor 22 is installed on the right side of the outer wall of the temperature sensor 21. The processing motor 19 and the first pressure sensor 22 are respectively connected to the controller 5 via signal lines. A pressurizing pump 23 is installed on the lower side of the outer wall of the processing box 3. A vacuum pump 24 is installed on the right side of the outer wall of the pressurizing pump 23. The pressurizing pump 23 and the vacuum pump 24 are connected to the processing box 3 via a connecting pipe. The pressurizing pump 23 and the vacuum pump 24 are connected to the switch 13 at the output end of the processing motor 19 via a connecting shaft.

[0042] A push rod 25 is installed on the right side of the outer wall of the reactor 1. The push rod 25 is connected to the switch 13 at the output end of the switching motor 12 via a connecting shaft. The push rod 25 is connected to the push valve 26 installed on the right side of the outer wall of the packaging bag 6. A nozzle 27 is installed on the upper side of the processing box 3. The nozzle 27 is connected to the liquid tank 28 installed on the lower side of the outer wall of the processing box 3 via a connecting pipe. A second pressurizing chamber 29 is installed at the connection between the liquid tank 28 and the nozzle 27. The second pressurizing chamber 29 is connected to the liquid tank 28 via a second switching valve 30. The second switching valve 30 is connected to the controller 5 via a signal line. The internal configuration of the second pressurizing chamber 29 is the same as that of the first pressurizing chamber 14. An active unit is installed on the upper side of the outer wall of the nozzle 27. The active unit is connected to the vision sensor 31 installed on the left side of the outer wall of the nozzle 27 via a signal line.

[0043] The movable unit includes: a slide 44, a slider 45, a telescopic shaft 46, and a rotating shaft 47;

[0044] A slide groove 44 is installed on the upper side of the inner wall of the treatment box 3. A slider 45 is installed in the middle of the inner wall of the slide groove 44. A telescopic shaft 46 is installed on the lower side of the outer wall of the slider 45. A rotating shaft 47 is installed on the lower side of the outer wall of the telescopic shaft 46. The slider 45, the telescopic shaft 46 and the rotating shaft 47 are connected to the switch 13 at the output end of the cleaning motor 48 installed on the upper side of the outer wall of the treatment box 3 through connecting shafts. The cleaning motor 48 is connected to the controller 5 through signal lines.

[0045] A partition plate 54 is installed on the lower side of the outer wall of the nozzle 27. The partition plate 54 is connected to the switch 13 at the output end of the processing motor 19 via a connecting shaft.

[0046] Furthermore, after the operator completes the dimensional processing of the rock sample, the controller 5 opens the connecting valve 4 to connect the feed inlet 2 and the processing tank 3, placing the rock sample on the conveyor belt 18. Then, the controller 5 closes the connecting valve 4 and simultaneously closes the discharge valve 10, cutting off the connection between the processing tank 3 and the reactor 1, thus sealing the interior of the processing tank 3. The controller 5 adjusts the environment inside the processing tank 3 based on the type of rock sample input by the operator and the actual environment of the rock. When the rock sample is deep rock, the controller 5 controls the first heater 20 to heat the processing tank 3 according to the type of rock sample. Temperature sensor 21 collects the temperature inside the processing chamber 3 and transmits it to the first heater 20 to ensure that the temperature inside the processing chamber 3 is within the actual environmental temperature range of the rock sample. The processing motor 19 is connected to the pressure pump 23 via a switch 13 at its output. Driven by the processing motor 19, the pressure pump 23 pressurizes the inside of the processing chamber 3. The pressure inside the processing chamber 3 is obtained by the first pressure sensor 22 to ensure that the pressure inside the processing chamber 3 does not exceed the actual environmental pressure range of the rock sample. When the rock sample is shallow rock, the controller 5 controls the output of the processing motor 19 according to the type of rock sample. The switch 13 at the output end is connected to the vacuum pump 24. Driven by the processing motor 19, the vacuum pump 24 depressurizes the interior of the processing chamber 3 and obtains the internal pressure of the processing chamber 3 through the first pressure sensor 22 to ensure that the pressure inside the processing chamber 3 does not exceed the pressure range of the actual environment of the rock sample. Then, the switch 13 at the output end of the processing motor 19 is connected to the second pressurization chamber 29. The controller 5 controls the second switching valve 30 to adjust the connection between the liquid tank 28 and the nozzle 27, so that the second pressurization chamber 29, driven by the processing motor 19, draws liquid nitrogen stored in the liquid tank 28, pressurizes it, and then sprays it out from the nozzle 27 to process the interior of the processing chamber 3. The temperature is lowered, and the temperature information inside the processing chamber 3 is collected by the temperature sensor 21 to pre-treat the rock sample. When the rock sample in the processing chamber 3 is heated and pressurized, the switch 13 at the output end of the processing motor 19 can be connected to the partition plate 54 through the controller 5. Under the drive of the processing motor 19, the partition plate 54 divides the processing chamber 3 into two parts, and only the part containing the rock sample is heated and pressurized. This can reduce energy consumption and improve the economic efficiency of the device. By performing in-situ temperature and pressure pretreatment on the rock sample that has completed size adjustment, the original structural state of the rock can be restored, thereby improving the accuracy of the test results.

[0047] Example 3: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6A CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device is described. A conveyor belt 18 is installed in the middle of the inner wall of the processing chamber 3. The conveyor belt 18 is connected to a switch 13 at the output end of the processing motor 19 installed on the lower side of the outer wall of the processing chamber 3 via a connecting shaft. First heaters 20 are installed on the front and rear sides of the outer wall of the processing chamber 3. Temperature sensors 21 are installed on the upper and lower sides of the inner wall of the processing chamber 3. The temperature sensors 21 are connected to the first heaters 20 via signal lines. A first pressure sensor 22 is installed on the right side of the outer wall of the temperature sensor 21. The processing motor 19 and the first pressure sensor 22 are respectively connected to a controller 5 via signal lines. A pressurizing pump 23 is installed on the lower side of the outer wall of the processing chamber 3. A vacuum pump 24 is installed on the right side of the outer wall of the pressurizing pump 23. The pressurizing pump 23 and the vacuum pump 24 are connected to the processing chamber 3 via a connecting pipe. The pressurizing pump 23 and the vacuum pump 24 are connected to the switch 13 at the output end of the processing motor 19 via a connecting shaft.

[0048] A push rod 25 is installed on the right side of the outer wall of the reactor 1. The push rod 25 is connected to the switch 13 at the output end of the switching motor 12 via a connecting shaft. The push rod 25 is connected to the push valve 26 installed on the right side of the outer wall of the packaging bag 6. A nozzle 27 is installed on the upper side of the processing box 3. The nozzle 27 is connected to the liquid tank 28 installed on the lower side of the outer wall of the processing box 3 via a connecting pipe. A second pressurizing chamber 29 is installed at the connection between the liquid tank 28 and the nozzle 27. The second pressurizing chamber 29 is connected to the liquid tank 28 via a second switching valve 30. The second switching valve 30 is connected to the controller 5 via a signal line. The internal configuration of the second pressurizing chamber 29 is the same as that of the first pressurizing chamber 14. An active unit is installed on the upper side of the outer wall of the nozzle 27. The active unit is connected to the vision sensor 31 installed on the left side of the outer wall of the nozzle 27 via a signal line.

[0049] The movable unit includes: a slide 44, a slider 45, a telescopic shaft 46, and a rotating shaft 47;

[0050] A slide groove 44 is installed on the upper side of the inner wall of the treatment box 3. A slider 45 is installed in the middle of the inner wall of the slide groove 44. A telescopic shaft 46 is installed on the lower side of the outer wall of the slider 45. A rotating shaft 47 is installed on the lower side of the outer wall of the telescopic shaft 46. The slider 45, the telescopic shaft 46 and the rotating shaft 47 are connected to the switch 13 at the output end of the cleaning motor 48 installed on the upper side of the outer wall of the treatment box 3 through connecting shafts. The cleaning motor 48 is connected to the controller 5 through signal lines.

[0051] A partition plate 54 is installed on the lower side of the outer wall of the nozzle 27. The partition plate 54 is connected to the switch 13 at the output end of the processing motor 19 via a connecting shaft.

[0052] Furthermore, during the testing of the rock sample, the packaging medium in the packaging bag 6 needs to be switched according to the different test contents. When the controller 5 connects the telescopic pipe 11 on one side of the discharge valve 8 and the discharge valve 8, and opens the discharge valve 8 to discharge the packaging medium in the packaging bag 6, the controller 5 controls the push valve 26 to open and controls the switch 13 at the output end of the switching motor 12 to connect the switching motor 12 to the push rod 25. Driven by the switching motor 12, the push rod 25 extends and enters the packaging bag 6 through the push valve 26, pushing the rock sample out of the packaging bag 6. 5 controls the opening of the discharge valve 10, allowing the rock sample to fall back onto the conveyor belt 18 under the push of the push rod 25. Controller 5 controls the switch 13 at the output of the processing motor 19 to connect to the conveyor belt 18. Driven by the processing motor 19, the conveyor belt 18 moves the rock sample from the right side of the processing box 3 to the middle of the processing box 3. Controller 5 determines the type of encapsulation medium to be used based on the type of rock sample tested previously, and selects a suitable cleaning agent to clean the rock sample, removing any residual encapsulation medium from the surface of the rock sample. Controller 5 then controls the second switching valve 3. The controller 5 switches the connection between the liquid tank 28 and the second pressurizing chamber 29, and controls the switch 13 at the output of the processing motor 19 to connect to the second pressurizing chamber 29. Driven by the processing motor 19, the second pressurizing chamber 29 draws in the cleaning agent stored in the liquid tank 28 and pressurizes it to the nozzle 27. The nozzle 27 sprays the cleaning agent to clean the rock sample. To ensure that the residual encapsulation medium on the surface of the rock sample is completely cleaned, the visual sensor 31 collects information about the surface of the rock sample during the cleaning process. The controller 5 then compares the information collected by the visual sensor 31 with the information of the rock sample without residual encapsulation medium. When comparing the surface of the sample, if there is residual packaging medium on the rock surface, the controller 5 controls the switch 13 at the output of the cleaning motor 48 to switch the connection between the cleaning motor 48 and the slider 45, the telescopic shaft 46 and the rotating shaft 47. Driven by the cleaning motor 48, the nozzle 27 moves on the slide 44 while the angle and height of the nozzle 27 are adjusted so that the cleaning agent sprayed by the nozzle 27 can better clean the rock sample. Then, the cleaned rock sample is transported into the packaging bag 6 through the connection of the processing motor 19 and the conveyor belt 18 for the next test item.

[0053] Example 4: Please refer to Figure 1 , Figure 7 and Figure 8A CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device is described. The discharge valve 8 is connected to the recovery tank 32 installed on the rear side of the outer wall of the medium tank 9 via a connecting pipe. The recovery tank 32 is connected to the processing tank 3 via a connecting pipe. An ion concentration meter 33 is installed at the output end of the discharge valve 8. A reflux valve 34 is installed on the front side of the outer wall of the recovery tank 32. The reflux valve 34 is connected to the medium tank 9 via a connecting pipe. The ion concentration meter 33 and the reflux valve 34 are connected to the controller 5 via signal lines. A filter screen 35 is installed on the upper side of the inner wall of the recovery tank 32. A separation unit is installed on the lower side of the outer wall of the filter screen 35. The separation unit is connected to the reflux valve 34 via a connecting pipe.

[0054] The vacuum pump 24 is connected to the telescopic pipe 11 on one side of the discharge valve 8 via a connecting pipe. A third switching valve 43 is installed at the connection between the vacuum pump 24 and the telescopic rod 11. The third switching valve 43 is connected to the controller 5 via a signal line.

[0055] The separation unit includes: a separation box 49, a rotating table 50, a speed sensor 51, a separation port 52, and a feeding box 53;

[0056] A separation box 49 is installed on the lower side of the outer wall of the filter screen 35. A rotating table 50 is installed on the lower side of the outer wall of the separation box 49. A speed sensor 51 is installed at the connection between the rotating table 50 and the separation box 49. A separation port 52 is installed in the middle of the outer wall of the separation box 49. The separation port 52 is connected to the liquid tank 28 and the return valve 34 through connecting pipes. A feeding box 53 is installed in the middle of the inner wall of the separation box 49. The rotating table 50, the speed sensor 51 and the feeding box 53 are connected to the controller 5 through signal lines.

[0057] Furthermore, during the switching process of the encapsulation medium in the encapsulation bag 6, after the telescopic tube 11 on one side of the discharge valve 8 is driven by the switching motor 12 and comes into contact with the discharge valve 8, the controller 5 controls the third switching valve 43 to connect the vacuum pump 24 and the discharge valve 8, and simultaneously controls the switch 13 at the output end of the processing motor 19 to connect the processing motor 19 and the vacuum pump 24. Driven by the processing motor 19, the vacuum pump 24 starts to run, generating suction at the output end of the discharge valve 8, so that the residual encapsulation medium in the encapsulation bag 6 can be better discharged. As the encapsulation medium in the encapsulation bag 6 is discharged from the discharge valve 8 and flows into the recovery box 32 along the telescopic tube 11 and connecting tube on one side of the discharge valve 8, the ion concentration meter 33 located at the discharge valve 8 collects the ion concentration change of the encapsulation medium and transmits it to the controller 5 for analysis of the reaction between the rock sample and the encapsulation medium during the percolation test and chemical test. At the same time, after the encapsulation medium enters the recovery box 32, the filter screen 35 filters the particles generated by the interaction between the rock sample and the encapsulation medium, and then... The encapsulated medium falls into the separation tank 49. The controller 5 sends a command to the rotating table 50 with its own motor. The speed sensor 51 detects the rotation speed of the rotating table 50 driving the separation tank 49. The controller adjusts the rotation speed of the separation tank 49 according to the type of encapsulated medium, so that the encapsulated medium is separated and flows back into the medium tank 9 through the separation port 52 connected to the medium tank 9 and the return valve 34 to replenish the encapsulated medium. When cleaning the rock sample, the cleaning fluid is mixed with cleaning agent. The controller 5 selects whether to separate the cleaning agent and the type of encapsulated medium according to the type of cleaning agent and the type of encapsulated medium. If separation is not possible, the controller notifies the operator to handle the separation tank 49. If centrifugation can be used to separate the encapsulated medium and cleaning agent, the controller adjusts the rotation speed of the separation tank 49 driven by the rotating table 50 to separate them. After separation, the encapsulated medium and cleaning agent flow back into the medium tank 9 and the liquid tank 28 through the separation port 52, respectively, to reduce resource consumption. In order to improve the separation effect of cleaning agent and encapsulated medium, the controller 5 controls the feeding box 53 to add the corresponding additives to the separation tank 49 for separation.

[0058] Example 5: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 7A CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device includes a reactor 1, a feed inlet 2, and a processing tank 3. The processing tank 3 is installed on the left side of the outer wall of the reactor 1, and the feed inlet 2 is installed on the left side of the outer wall of the processing tank 3. A connecting valve 4 is installed at the connection between the processing tank 3 and the feed inlet 2. A controller 5 is installed on the front side of the outer wall of the reactor 1. A sealing bag 6 is installed in the middle of the inner wall of the reactor 1. A feed valve 7 is provided on the upper side of the outer wall of the sealing bag 6, and a discharge valve 8 is installed on the lower side of the outer wall of the sealing bag 6. The feed valve 7 and the discharge valve 8 are connected to a medium tank 9 installed on the lower side of the outer wall of the reactor 1 through a connecting pipe. A discharge valve 10 is installed on the left side of the outer wall of the sealing bag 6, and the sealing bag 6 is connected to the processing tank 3 through the discharge valve 10. The connecting valve 4, the feed valve 7, the discharge valve 8, and the discharge valve 10 are respectively connected to the controller 5 through signal lines.

[0059] The reactor 1 has telescopic pipes 11 installed on the upper and lower sides of its inner wall. The telescopic pipes 11 are connected to the switch 13 at the output end of the switching motor 12 installed on the rear side of the outer wall of the medium tank 9 via a connecting shaft. The feed valve 7 is connected to the first pressurizing chamber 14 installed on the upper side of the outer wall of the medium tank 9 via the telescopic pipes 11 and the connecting pipe. The first pressurizing chamber 14 is connected to the medium tank 9 via the first switching valve 15. A pressurizing rod 16 is installed in the middle of the inner wall of the first pressurizing chamber 14. Balance pipes 17 are provided on the upper and lower sides of the outer wall of the pressurizing rod 16. The pressurizing rod 16 is connected to the switch 13 at the output end of the switching motor 12 via a connecting shaft. The switching motor 12, the switch 13 and the first switching valve 15 are respectively connected to the controller 5 via signal lines.

[0060] The reactor 1 is equipped with a second heater 36 on the front and rear sides of its inner wall, an infrared imager 37 on the upper and lower sides of its inner wall, an acoustic emission sensor 38 at the connection between the reactor 1 and the packaging bag 6, a strain gauge 39 embedded in the inner wall of the packaging bag 6, a second pressure sensor 40 at the connection between the feed valve 7 and the first pressurization chamber 14, and a flow meter 41 and a differential pressure sensor 42 at the connection between the feed valve 7 and the discharge valve 8 and the packaging bag 6. The second heater 36, the infrared imager 37, the acoustic emission sensor 38, the strain gauge 39, the second pressure sensor 40, the flow meter 41 and the differential pressure sensor 42 are connected to the controller 5 via signals.

[0061] Furthermore, after the rock sample enters the reactor 1, the controller 5 controls the feeding valve 10 to disconnect the connection between the reactor 1 and the processing tank 3, so that the rock sample is placed in the sealing bag 6. The operator injects different sealing media into the sealing bag 6 in the order of temperature test, stress test, seepage test and chemical test to test the mechanical properties of the rock. The operator issues an instruction through the controller 5 to control the switch 13 at the output end of the switching motor 12 to connect with the telescopic tube 11. Under the drive of the switching motor 12, the telescopic tube 11 can be extended. At the same time, the controller 5 controls the feeding valve 7 to open, so that the extension... The telescopic tube 11 can enter the feed valve 7. The feed valve 7 is then closed to fix the telescopic tube 11. The controller 5 controls the first switching valve 15 to switch the connection between the medium tank 9 and the first pressurizing chamber 14, ensuring that the encapsulation medium delivered into the first pressurizing chamber 14 meets the testing requirements and the rock sample encapsulation requirements. The second pressure sensor 40 detects the encapsulation medium delivery pressure to ensure that the encapsulation medium delivered into the encapsulation bag 6 meets the requirements. During temperature testing, the rock sample is encapsulated using the telescopic tube 11. After encapsulation, the controller 5 controls the telescopic tube 11 to contract and closes the feed valve 7, controlling the second heater 36 to heat the inside of the reactor 1. The infrared imager 37 collects data on the thermal changes of the rock sample and transmits it to the controller 5. After the encapsulation medium switching is completed, stress testing is performed. The flow meter 41 collects the flow rate of the stress test encapsulation medium injected into the encapsulation bag 6 from the feed valve 7. The strain gauge 39 collects the stress changes of the rock sample. The controller 5 analyzes the data collected by the operator using a micro fiber optic strain gauge with a diameter of less than 1 mm pre-embedded on the surface of the rock sample, and also analyzes the data through the acoustic emission sensor 38. The sound information emitted by the encapsulation bag 6 and the rock sample during the stress test is collected for auxiliary analysis. During the seepage test, the operator adds the seepage fluid prepared according to the formation water in the rock environment to the medium tank 9. The controller 5 controls the first switching valve 15 to inject supercritical carbon dioxide from the feed valve 7 into the encapsulation bag 6 for seepage testing. The pressure is controlled above 7.38 MPa and the temperature is greater than or equal to 31.1℃ to maintain the supercritical state of carbon dioxide. The injection rate of supercritical carbon dioxide is adjusted according to different rock types. For homogeneous sandstone, the injection rate is 0.5 mL / min × cm. 2 ~1.2 mL / min × cm 2 Seepage tests were conducted on the flow rate; for fractured limestone, the flow rate was less than 0.3 mL / min × cm. 2The flow rate was used for seepage testing. The pressure change of supercritical carbon dioxide at the feed valve 7 and the discharge valve 8 was detected by the differential pressure sensor 42. If the pressure changed, it indicated that there was a seepage channel in the rock sample. If the pressure did not change, it indicated that there was no seepage channel inside the rock sample. Then, chemical testing was carried out by injecting carbon dioxide aqueous solution through the feed valve 7. The ion concentration information was collected by the ion concentration meter 33 at the discharge valve 8 and transmitted to the controller 5 for analysis. Carbonate rocks were injected at a dilution ratio of concentrated hydrochloric acid to water of 1:1 to 1:2 at a rate of 15 mL / min to 20 mL / min to simulate a strong dissolution scenario. Silicate rocks were injected at a dilution ratio of concentrated hydrochloric acid to water of 1:3 to 1:4 at a rate of 5 mL / min to 8 mL / min. Sulfide rocks were injected at a dilution ratio of concentrated hydrochloric acid to water of 1:2 to 1:3 at a rate of 10 mL / min.

[0062] Working principle: After the operator completes the dimensional processing of the rock sample, the controller 5 opens the connecting valve 4 to connect the feed port 2 and the processing tank 3, placing the rock sample on the conveyor belt 18. Then, the controller 5 closes the connecting valve 4 and simultaneously closes the discharge valve 10, cutting off the connection between the processing tank 3 and the reactor 1, thus sealing the interior of the processing tank 3. The controller 5 adjusts the environment inside the processing tank 3 based on the type of rock sample input by the operator and the actual environment of the rock. When the rock sample is deep rock, the controller 5 controls the first heater 20 to heat the processing tank 3 according to the type of rock sample. The controller also connects the processing motor 19 and the pressure pump 23 via the switch 13 at the output of the processing motor 19. Driven by the processing motor 19, the pressurizing pump 23 pressurizes the interior of the processing chamber 3. When the rock sample is shallow rock, the controller 5 controls the switch 13 at the output end of the processing motor 19 to connect to the vacuum pump 24 according to the type of rock sample. Driven by the processing motor 19, the vacuum pump 24 depressurizes the interior of the processing chamber 3. Then, the controller controls the switch 13 at the output end of the processing motor 19 to connect to the second pressurizing chamber 29. The controller 5 controls the second switching valve 30 to adjust the connection between the liquid tank 28 and the nozzle 27, so that the second pressurizing chamber 29, driven by the processing motor 19, extracts the liquid nitrogen stored in the liquid tank 28, pressurizes it, and sprays it out from the nozzle 27 to cool the interior of the processing chamber 3 and restore the original state of the rock sample.

[0063] Controller 5 opens the discharge valve 10, and the conveyor belt 18 driven by the processing motor 19 sends the rock sample into the sealing bag 6. Then, controller 5 closes the discharge valve 10. The operator injects different sealing media into the sealing bag 6 in the order of temperature testing, stress testing, seepage testing, and chemical testing to test the mechanical properties of the rock. Controller 5 controls the first switching valve 15 to connect the medium tank 9 to the first pressurizing chamber 14. Controller 5 controls the switch 13 at the output of the switching motor 12 to connect to the pressurizing rod 16. Driven by the switching motor 12, the pressurizing rod 16 reciprocates, drawing the sealing media stored in the medium tank 9 into the first pressurizing chamber 14. Under the pressure balance of the balance pipe 17, the pressurizing rod 16 pressurizes the sealing media. The medium is fed into the telescopic tube 11 through the connecting tube. When the rock sample enters the sealing bag 6, the controller 5 controls the switch 13 at the output of the switching motor 12 to connect to the telescopic tube 11 and controls the feed valve 7 to open. Driven by the switching motor 12, the telescopic tube 11 extends into the feed valve 7. Then, the feed valve 7 is controlled to close to lock the telescopic tube 11. The sealing medium passed through the first pressurization chamber 14 is fed from the telescopic tube 11 into the sealing bag 6. When testing different types of rock samples, the controller 5 switches the connection between the medium tank 9 and the first pressurization chamber 14 through the first switching valve 15 according to the type of rock sample input by the operator, so that the sealing medium extracted into the first pressurization chamber 14 can be adapted to the type of rock.

[0064] During the test, the packaging medium in the packaging bag 6 needs to be switched according to the different test contents. After the controller 5 connects the telescopic pipe 11 on one side of the discharge valve 8 and the discharge valve 8, the discharge valve 8 is opened to discharge the packaging medium in the packaging bag 6. The controller 5 controls the push valve 26 to open and controls the switch 13 at the output end of the switching motor 12 to connect the switching motor 12 to the push rod 25. Driven by the switching motor 12, the push rod 25 extends and enters the packaging bag 6 from the push valve 26, pushing the rock sample out of the packaging bag 6. The controller 5 controls the discharge valve 10 to open, so that the rock sample falls back onto the conveyor belt 18 under the push of the push rod 25. The controller 5 and the conveyor belt 18 move the rock sample from the right side of the processing box 3 to the middle of the processing box 3. The controller 5 selects a suitable cleaning agent according to the type of packaging medium to clean the rock sample and remove the packaging medium remaining on the surface of the rock sample. Then, by connecting the processing motor 19 and the conveyor belt 18, the cleaned rock sample is transported into the packaging bag 6 for the next test item.

[0065] During the switching process of the packaging medium in the packaging bag 6, after the telescopic tube 11 on one side of the discharge valve 8 is engaged with the discharge valve 8 by the switching motor 12, the controller 5 controls the third switching valve 43 to connect the vacuum pump 24 and the discharge valve 8, and simultaneously controls the switch 13 at the output end of the processing motor 19 to connect the processing motor 19 and the vacuum pump 24. Driven by the processing motor 19, the vacuum pump 24 starts to run, generating suction at the output end of the discharge valve 8, so that the residual packaging medium in the packaging bag 6 can be better discharged. At the same time, after the packaging medium enters the recovery box 32, the filter screen 35 filters the particles generated by the interaction between the rock sample and the packaging medium. Then the packaging medium falls into the separation box 49. The controller 5 controls the rotary table 50 with its own motor to... The controller 5 issues an instruction to detect the rotation speed of the rotating table 50 driving the separation tank 49 via the speed sensor 51. The speed of the separation tank 49 is adjusted according to the type of encapsulated medium, causing the encapsulated medium to separate and flow back into the media tank 9 through the separation port 52 connected to the media tank 9 for replenishment. When cleaning the rock sample, the cleaning fluid contains cleaning agent. The controller 5 selects whether to separate the cleaning agent and the type of encapsulated medium based on the type of cleaning agent and the type of encapsulated medium. If separation is not possible, the operator is notified to handle the separation tank 49. If centrifugal separation is possible, the rotation speed of the separation tank 49 is adjusted by the rotating table 50 to separate the encapsulated medium and cleaning agent, which then flow back into the media tank 9 and liquid tank 28 through the separation port 52 respectively, reducing resource consumption.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device, characterized in that: The reactor includes a reactor (1), a feed inlet (2), and a processing tank (3). The processing tank (3) is installed on the left side of the outer wall of the reactor (1), and the feed inlet (2) is installed on the left side of the outer wall of the processing tank (3). A connecting valve (4) is installed at the connection between the processing tank (3) and the feed inlet (2). A controller (5) is installed on the front side of the outer wall of the reactor (1). A sealing bag (6) is installed in the middle of the inner wall of the reactor (1), and a feed valve (7) is provided on the upper side of the outer wall of the sealing bag (6). A discharge valve (8) is installed on the lower side of the outer wall of the packaging bag (6). The feed valve (7) and the discharge valve (8) are connected to the medium tank (9) installed on the lower side of the outer wall of the reactor (1) through a connecting pipe. A discharge valve (10) is installed on the left side of the outer wall of the packaging bag (6). The packaging bag (6) is connected to the processing tank (3) through the discharge valve (10). The connecting valve (4), feed valve (7), discharge valve (8) and discharge valve (10) are respectively connected to the controller (5) through signal lines.

2. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 1, characterized in that: The reactor (1) has telescopic pipes (11) installed on the upper and lower sides of its inner wall. The telescopic pipes (11) are connected to the switch (13) at the output end of the switching motor (12) installed on the outer side of the medium tank (9) via a connecting shaft. The feed valve (7) is connected to the first pressurizing chamber (14) installed on the upper side of the outer wall of the medium tank (9) via the telescopic pipes (11) and the connecting pipe. The first pressurizing chamber (14) is connected to the medium tank (9) via the first switching valve (15). A pressurizing rod (16) is installed in the middle of the inner wall of the first pressurizing chamber (14). Balance pipes (17) are provided on the upper and lower sides of the outer wall of the pressurizing rod (16). The pressurizing rod (16) is connected to the switch (13) at the output end of the switching motor (12) via a connecting shaft. The switching motor (12), the switch (13) and the first switching valve (15) are connected to the controller (5) via signal lines.

3. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 1, characterized in that: A conveyor belt (18) is installed in the middle of the inner wall of the processing box (3). The conveyor belt (18) is connected to a switch (13) at the output end of the processing motor (19) installed on the lower side of the outer wall of the processing box (3) via a connecting shaft. A first heater (20) is installed on the front and rear sides of the outer wall of the processing box (3). Temperature sensors (21) are installed on the upper and lower sides of the inner wall of the processing box (3). The temperature sensors (21) are connected to the first heater (20) via signal lines. The temperature sensor (21) is installed on the right side of the outer wall. There is a first pressure sensor (22). The processing motor (19) and the first pressure sensor (22) are connected to the controller (5) through signal lines respectively. A pressure pump (23) is installed on the lower side of the outer wall of the processing box (3). A vacuum pump (24) is installed on the right side of the outer wall of the pressure pump (23). The pressure pump (23) and the vacuum pump (24) are connected to the processing box (3) through a connecting pipe. The pressure pump (23) and the vacuum pump (24) are connected to the switch (13) at the output end of the processing motor (19) through a connecting shaft.

4. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 1, characterized in that: A push rod (25) is installed on the right side of the outer wall of the reactor (1). The push rod (25) is connected to the switch (13) at the output end of the switching motor (12) via a connecting shaft. The push rod (25) is connected to the push valve (26) installed on the right side of the outer wall of the packaging bag (6). A nozzle (27) is installed on the upper side of the processing box (3). The nozzle (27) is connected to the liquid tank (28) installed on the lower side of the outer wall of the processing box (3) via a connecting pipe. A second pressurizing chamber (29) is installed at the connection between the liquid tank (28) and the nozzle (27). The second pressurizing chamber (29) is connected to the liquid tank (28) via a second switching valve (30). The second switching valve (30) is connected to the controller (5) via a signal line. The interior of the second pressurizing chamber (29) is the same as that of the first pressurizing chamber (14). An active unit is installed on the upper side of the outer wall of the nozzle (27). The active unit is connected to the vision sensor (31) installed on the left side of the outer wall of the nozzle (27) via a signal line.

5. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 1, characterized in that: The discharge valve (8) is connected to the recovery tank (32) installed on the rear side of the outer wall of the medium tank (9) through a connecting pipe. The recovery tank (32) is connected to the processing tank (3) through a connecting pipe. An ion concentration meter (33) is installed at the output end of the discharge valve (8). A reflux valve (34) is installed on the front side of the outer wall of the recovery tank (32). The reflux valve (34) is connected to the medium tank (9) through a connecting pipe. The ion concentration meter (33) and the reflux valve (34) are connected to the controller (5) through a signal line. A filter screen (35) is installed on the upper side of the inner wall of the recovery tank (32). A separation unit is installed on the lower side of the outer wall of the filter screen (35). The separation unit is connected to the reflux valve (34) through a connecting pipe.

6. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 1, characterized in that: The reactor (1) is equipped with a second heater (36) on the front and back sides of the inner wall. The reactor (1) is equipped with an infrared imager (37) on the upper and lower sides of the inner wall. The reactor (1) is equipped with an acoustic emission sensor (38) at the connection between the reactor (1) and the packaging bag (6). The packaging bag (6) is embedded with a strain gauge (39). The feed valve (7) is equipped with a second pressure sensor (40) at the connection between the feed valve (7) and the first pressurization chamber (14). The feed valve (7) and the discharge valve (8) are equipped with a flow meter (41) and a differential pressure sensor (42) at the connection between the feed valve (7) and the packaging bag (6). The second heater (36), the infrared imager (37), the acoustic emission sensor (38), the strain gauge (39), the second pressure sensor (40), the flow meter (41), and the differential pressure sensor (42) are connected to the controller (5) via signals.

7. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 3, characterized in that: The vacuum pump (24) is connected to the telescopic pipe (11) on one side of the discharge valve (8) through a connecting pipe. A third switching valve (43) is installed at the connection between the vacuum pump (24) and the telescopic rod (11). The third switching valve (43) is connected to the controller (5) through a signal line.

8. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 4, characterized in that: The movable unit includes: a slide (44), a slider (45), a telescopic shaft (46), and a rotating shaft (47). A slide groove (44) is installed on the upper side of the inner wall of the treatment box (3). A slider (45) is installed in the middle of the inner wall of the slide groove (44). A telescopic shaft (46) is installed on the lower side of the outer wall of the slider (45). A rotating shaft (47) is installed on the lower side of the outer wall of the telescopic shaft (46). The slider (45), telescopic shaft (46) and rotating shaft (47) are connected to the switch (13) at the output end of the cleaning motor (48) installed on the upper side of the outer wall of the treatment box (3) through the connecting shaft. The cleaning motor (48) is connected to the controller (5) through the signal line.

9. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 5, characterized in that: The separation unit includes: a separation box (49), a rotary table (50), a speed sensor (51), a separation port (52), and a feeding box (53); A separation box (49) is installed on the lower side of the outer wall of the filter screen (35). A rotating table (50) is installed on the lower side of the outer wall of the separation box (49). A speed sensor (51) is installed at the connection between the rotating table (50) and the separation box (49). A separation port (52) is installed in the middle of the outer wall of the separation box (49). The separation port (52) is connected to the liquid tank (28) and the return valve (34) respectively through connecting pipes. A feeding box (53) is installed in the middle of the inner wall of the separation box (49). The rotating table (50), the speed sensor (51) and the feeding box (53) are connected to the controller (5) through signal lines.

10. The CO2 ambient temperature-stress-percolation-chemical multi-field coupled rheological testing device according to claim 4, characterized in that: A partition plate (54) is installed on the lower side of the outer wall of the nozzle (27). The partition plate (54) is connected to the switch (13) at the output end of the processing motor (19) via a connecting shaft.

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