Device and method for testing diversion performance in situ after imbibition

Abstract

The invention belongs to the field of oil and gas development testing devices, and particularly relates to a device and a method for testing diversion performance in situ after imbibition. The device for testing the flow guiding performance in situ after imbibition comprises a testing kettle and a testing groove, wherein the testing groove in which a sample to be tested is arranged is arranged in the testing kettle. The device for testing the flow guide performance in situ after imbibition is constructed to be combined with the observation and analysis system, the state of liquid in the test kettle is adjusted through the liquid circulation control system, the to-be-tested sample can be subjected to imbibition testing, and the flow guide performance of the to-be-tested sample can be tested in situ after the imbibition testing is finished. The device for testing the flow guide performance in situ after imbibition is simple in structure and convenient to operate, can improve the efficiency and the accuracy of performance testing of the sample to be tested to a great extent, and has a good application prospect in the field.

Description

Technical Field

[0001] The present invention belongs to the field of oil and gas development testing devices, and particularly relates to a device and method for in-situ testing of diversion performance after imbibition. Background Art

[0002] Currently, the devices for testing the diversion ability of samples such as rock slabs in the prior art do not have the conditions for carrying out in-situ testing of the diversion ability of samples after imbibition. As a result, when there is a relevant testing requirement, testers need to perform imbibition treatment and diversion performance testing on the samples separately. In this case, on the one hand, the testing efficiency is not high, and on the other hand, due to non-in-situ testing, the accuracy of the test results is not good. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention provides a device and method for in-situ testing of diversion performance after imbibition.

[0004] According to the first aspect of the present invention, there is provided a device for in-situ testing of diversion performance after imbibition.

[0005] The device for in-situ testing of diversion performance after imbibition includes:

[0006] A test kettle, including a kettle body, a first liquid inlet channel and a first liquid outlet channel provided on the kettle body and configured to communicate with a liquid circulation control system, and a first window and a second window oppositely provided on the side wall of the kettle body. A first viewing window and a second viewing window are respectively provided inside the first window and the second window; and

[0007] A test tank, provided inside the test kettle, including a tank body, a second liquid inlet channel and a second liquid outlet channel provided on the tank body, a pressure hole opened on one side of the tank body, and a third window provided on the side of the tank body opposite to the pressure hole. A piston is provided inside the tank body, a third viewing window is provided inside the third window, and a test cavity for placing a sample to be tested is formed between the piston and the third viewing window.

[0008] Wherein, the device for in-situ testing of diversion performance after imbibition is configured to be combined with an observation and analysis system, and the state of the liquid inside the test kettle is adjusted through the liquid circulation control system, so that the sample to be tested can perform imbibition, and the diversion performance of the sample to be tested can be tested in-situ after the imbibition ends.

[0009] As an extension of the above technical solution, the present invention also provides the following embodiments:

[0010] The kettle body includes a first main body configured as a bottomless cylindrical object, and a top cover and a bottom cover respectively connected to the upper and lower ends of the first main body.

[0011] The first liquid inlet channel and the first liquid outlet channel are respectively arranged on the top cover and the bottom cover.

[0012] The kettle body includes a first viewing window cover and a second viewing window cover which are respectively arranged outside the first viewing window and the second viewing window and are both constructed as hollow structures.

[0013] Guard plates are arranged on the left side of the first viewing window cover and the right side of the second viewing window cover.

[0014] The tank body includes a second main body and a piston plate connected to the right end of the second main body, and the pressurizing hole is arranged on the piston plate.

[0015] The second liquid inlet channel and the second liquid outlet channel are respectively arranged at the upper and lower ends of the second main body.

[0016] The tank body includes a third viewing window cover arranged on the left side of the second main body and outside the third viewing window.

[0017] No less than two layers of sample gaskets are arranged in the test cavity, and the sample to be tested is arranged between the two layers of sample gaskets.

[0018] A bracket for placing the test tank is arranged inside the test kettle.

[0019] A heating jacket is arranged outside the test kettle.

[0020] According to the second aspect of the present invention, a method for in-situ testing the diversion performance after imbibition is provided.

[0021] The method for in-situ testing the diversion performance after imbibition is carried out by using the device for in-situ testing the diversion performance after imbibition as described above, and includes the following steps:

[0022] 1) Place the test tank with the sample to be tested inside into the test kettle;

[0023] 2) Inject liquid into the test kettle to make the internal pressure of the test kettle reach a predetermined value;

[0024] 3) Make the sample to be tested undergo imbibition under the action of the liquid;

[0025] 4) Control the liquid circulation control system to make the inside of the test kettle in a liquid circulation state;

[0026] 5) Obtain the diversion performance of the sample to be tested after the imbibition through the observation and analysis system.

[0027] The advantages of the present invention compared with the prior art are:

[0028] By designing the test kettle and the test tank and combining the use of the test kettle and the test tank, a device capable of testing the imbibition and in-situ diversion performance of the sample to be tested is formed, thereby improving the efficiency and accuracy of testing the diversion performance of the sample to be tested. Brief Description of the Drawings

[0029] Figure 1 It is a schematic cross-sectional structure diagram of the device for testing the diversion performance in-situ after imbibition according to the present invention;

[0030] Figure 2 It is a schematic cross-sectional structure diagram of the test tank in the device for testing the diversion performance in-situ after imbibition according to the present invention;

[0031] Figure 3 It is a right side view of the test tank in the device for testing the diversion performance in-situ after imbibition according to the present invention;

[0032] Figure 4 It is a left side view of the test tank in the device for testing the diversion performance in-situ after imbibition according to the present invention.

[0033] All the drawings in the present invention are schematic diagrams for explaining the structure and principle, and are not necessarily drawn according to the actual size and proportion.

[0034] The specific meanings of the reference numerals in the drawings are as follows:

[0035] 1. Test kettle; 11. Kettle body; 111. First main body; 112. Top cover; 1121. First screw; 113. Bottom cover; 1131. Second screw; 114. First window cover; 115. Second window cover; 116. Guard plate; 117. Fourth sealing ring; 118. Fifth sealing ring; 12. First liquid inlet channel; 13. First liquid outlet channel; 14. First window; 141. First window; 142. First sealing ring; 15. Second window; 151. Second window; 152. Second sealing ring; 16. Bracket; 2. Test tank; 21. Tank body; 211. Second main body; 212. Piston plate; 213. Third window cover; 22. Pressurizing hole; 23. Positioning hole; 24. Third window; 241. Third window; 242. Third sealing ring; 25. Piston; 251. Sixth sealing ring; 26. Sample to be tested; 27. Test cavity; 271. Sample gasket; 28. Second liquid inlet channel; 29. Second liquid outlet channel; 100. Device for testing the diversion performance in-situ after imbibition. Detailed Description of the Invention

[0036] The embodiments of the present invention will be described in more detail below with reference to the drawings.

[0037] According to a first aspect of the present invention, there is provided an apparatus 100 for in-situ testing of the diversion performance after imbibition.

[0038] Figure 1 FIG. is a schematic cross-sectional structure diagram of an apparatus 100 (hereinafter referred to as "apparatus 100") for in-situ testing of the diversion performance after imbibition according to the present invention. As shown in the figure, the apparatus 100 includes a test kettle 1 and a test tank 2. The test kettle 1 includes a kettle body 11, a first liquid inlet channel 12 and a first liquid outlet channel 13 provided on the kettle body 11, and a first window 14 and a second window 15 oppositely provided on the side wall of the kettle body 11. For the sake of convenience of description, here, it is taken as an example that the first window 14 is located on the left side of the kettle body 11 and the second window 15 is located on the right side of the kettle body 11. The first liquid inlet channel 12 and the first liquid outlet channel 13 are configured to communicate with a liquid circulation control system (not shown, the same hereinafter) outside. Inside the first window 14 and the second window 15, a first viewing window 141 and a second viewing window 151 with light-transmitting functions are respectively provided. The test tank 2 is provided inside the test kettle 1, and it includes a tank body 21, a second liquid inlet channel 28 and a second liquid outlet channel 29 provided on the tank body 21, a pressure hole 22 opened on one side of the tank body 21, and a third window 24 provided on the side of the tank body 21 opposite to the pressure hole 22. And, the side of the tank body 21 where the pressure hole 22 is opened has light-transmittance. A light-transmitting piston 25 is provided inside the tank body 21. Inside the third window 24, a third viewing window 241 with light-transmitting function is provided, and a test chamber 27 for placing a sample to be tested 26 is formed between the piston 25 and the third viewing window 241. The apparatus 100 is also configured to be able to cooperate with an observation and analysis system including components such as a light source, a camera, and a computer outside (not shown, the same hereinafter), and adjust the state of the liquid inside the test kettle 1 through the liquid circulation control system, so that the sample to be tested 26 can perform imbibition. And after the imbibition, without taking out the sample to be tested 26, the diversion performance of the sample to be tested 26 is tested in-situ.

[0039] During specific operations, the staff correctly place the sample 26 to be tested in the test tank 2 and ensure that the test tank 2 is in an installed state. Then, place the test tank 2 at an appropriate position in the test kettle 1, that is, place the third viewing window 241 adjacent to the first viewing window 141, the pressure hole 22 adjacent to the second viewing window 151, and ensure that the test kettle 1 is in an installed state. After that, connect the test kettle 1 to the liquid circulation control system through the first liquid inlet channel 12 and the first liquid outlet channel 13, place the test kettle 1 between the light source and the camera, and make the first viewing window 141 adjacent to the camera in the observation and analysis system, and the second viewing window 151 adjacent to the light source in the observation and analysis system. After that, the staff operate the liquid circulation control system to fill the inside of the test kettle 1 with liquid and reach a predetermined pressure. During this process, the liquid enters the space between the piston 25 and the tank body 21 through the pressure hole 22 on the tank body 21 and pushes the piston 25 to move inward to apply pressure to the sample 26 to be tested so that it also reaches a certain stress state. After that, let the sample 26 to be tested perform dialysis in this set environment. After the dialysis of the sample 26 to be tested is completed, the staff continue to control the liquid circulation control system to make the liquid inside the test kettle 1 in a flowing state, and make the flowing liquid form a circulating flow in the test tank 2 through the second liquid inlet channel 28 and the second liquid outlet channel 29 provided on the test tank 2. After that, the staff turn on the observation and analysis system. Since the first viewing window 141, the second viewing window 151, the third viewing window 241, the piston 25, and the side surface of the tank body 21 adjacent to the light source are all light-transmitting components, the camera adjacent to the first viewing window 141 can observe the sample 26 to be tested and transmit the data to the computer for analysis, so as to complete the test of the diversion performance of the sample 26 to be tested.

[0040] It should be noted that the structures of the liquid circulation control system and the observation and analysis system, as well as the observation and calculation processes for obtaining the imbibition performance and diversion ability of the sample 26 to be tested after observing the sample 26 to be tested are well-known to those skilled in the art and will not be described in detail here. In addition, the reason for performing imbibition on the sample 26 to be tested in a set environment is that the imbibition performance of the sample 26 to be tested in this set environment is in a known state, which is convenient for subsequent in-situ measurement of the diversion performance of the sample 26 to be tested and the processing and analysis of test results such as data.

[0041] Through the above design, by using the structural characteristics of the test kettle 1 and the test tank 2, and the way of combining the test kettle 1 and the test tank 2 for use, the function of in-situ testing the diversion performance after imbibition of the sample 26 to be tested is realized, which greatly improves the efficiency and accuracy of testing the diversion performance after imbibition of the sample 26 to be tested.

[0042] In one embodiment of the present invention, in order to improve the high-temperature and high-pressure resistance of the device 100, so that the device 100 can provide a high-temperature and high-pressure test environment, the autoclave body 11 is made of a metal with high-temperature and high-pressure resistance and corrosion resistance.

[0043] Preferably, the autoclave body 11 is made of Hastelloy.

[0044] In one embodiment of the present invention, in order to improve the high-temperature and high-pressure resistance of the device 100, so that the device 100 can provide a high-temperature and high-pressure test environment, the second main body 211 is made of a metal with high-temperature and high-pressure resistance and corrosion resistance.

[0045] Preferably, the second main body 211 is made of Hastelloy.

[0046] In one embodiment of the present invention, the first viewing window 141 is selected as a sapphire viewing window. Through this design, the characteristics of the sapphire viewing window having high-temperature resistance, high-pressure resistance and high-definition perspective are utilized, and the accuracy and precision of the imbibition test and the in-situ diversion performance test of the sample to be tested 26 are improved.

[0047] In one embodiment of the present invention, the second viewing window 151 is selected as a sapphire viewing window. Through this design, the characteristics of the sapphire viewing window having high-temperature resistance, high-pressure resistance and high-definition perspective are utilized, and the accuracy and precision of the imbibition test and the in-situ diversion performance test of the sample to be tested 26 are improved.

[0048] In one embodiment of the present invention, the third viewing window 241 is selected as a sapphire viewing window. Through this design, the characteristics of the sapphire viewing window having high-temperature resistance, high-pressure resistance and high-definition perspective are utilized, and the accuracy and precision of the imbibition test and the in-situ diversion performance test of the sample to be tested 26 are improved.

[0049] As Figure 1 shown, in one embodiment of the present invention, a first sealing ring 142 is provided at the position between the first viewing window 141 and the first window 14. Through this design, the sealing performance of the connection between the first viewing window 141 and the first window 14 is ensured, the leakage of the liquid inside the test autoclave 1 is avoided, and the safety during the test and the accuracy of the test result are guaranteed.

[0050] Preferably, when the first viewing window 141 is a sapphire viewing window, in order to achieve a good sealing effect, the first sealing ring 142 is a sapphire peek gasket.

[0051] As Figure 1As shown, in an embodiment of the present invention, a second sealing ring 152 is provided at the position between the second viewing window 151 and the first window 15. Through this design, the sealing performance of the connection between the second viewing window 151 and the second window 15 is ensured, preventing the liquid inside the test kettle 1 from leaking, and guaranteeing the safety during the test process and the accuracy of the test results.

[0052] Preferably, when the second viewing window 151 is a sapphire viewing window, in order to achieve a good sealing effect, the second sealing ring 152 is a sapphire peek gasket.

[0053] As Figure 2 shown, in an embodiment of the present invention, a third sealing ring 242 is provided at the position between the third viewing window 241 and the third window 24. Through this design, the sealing performance of the connection between the third viewing window 241 and the third window 24 is ensured, enabling the test chamber 27 containing the sample to be tested 26 to maintain a stable test environment, thus contributing to improving the accuracy and precision of the test results.

[0054] Preferably, when the third viewing window 241 is a sapphire viewing window, in order to achieve a good sealing effect, the third sealing ring 242 is a sapphire peek gasket.

[0055] As Figure 1 shown, in an embodiment of the present invention, the kettle body 11 includes a first main body 111, a top cover 112, and a bottom cover 113. The first main body 111 is configured as a cylindrical object without bottoms at both ends, and the top cover 112 and the bottom cover 113 are respectively connected to the upper and lower ends of the first main body 111. Through this design, the kettle body 11 is configured as a split structure composed of three parts, facilitating the placement of the test tank 2 and reducing the manufacturing difficulty and processing cost of the kettle body 11.

[0056] Preferably, as Figure 1 shown, a fourth sealing ring 117 is provided at the connection between the top cover 112 and the first main body 111. Through this design, the liquid inside the test kettle 1 is prevented from leaking, guaranteeing the safety during the test process and the accuracy of the test results.

[0057] Preferably, as Figure 1 shown, a fifth sealing ring 118 is provided at the connection between the bottom cover 113 and the first main body 111. Through this design, the liquid inside the test kettle 1 is prevented from leaking, guaranteeing the safety during the test process and the accuracy of the test results.

[0058] As Figure 1 shown, in an embodiment of the present invention, for the convenience and firmness of connection, the top cover 112 is connected to the first main body 111 through the first screw 1121.

[0059] As Figure 1 shown, in another embodiment of the present invention, for the convenience and firmness of connection, the bottom cover 113 is connected to the first main body 111 by the second screw 1131.

[0060] As Figure 1 shown, in an embodiment of the present invention, the kettle body 11 includes a first window cover 114 and a second window cover 115 respectively arranged outside the first window 141 and the second window 151. And for the convenience of light passing, both the first window cover 114 and the second window cover 115 are constructed as hollow structures. Through the design of the first window cover 114 and the second window cover 115, the first window 141 and the second window 151 are blocked and protected, which helps to keep the first window 141 and the second window 151 in a clean environment, and further can avoid affecting the test results of the sample to be tested 26 to a certain extent due to the contamination of the first window 141 and the second window 151.

[0061] Furthermore, in an embodiment of the present invention, light-transmissive protection plates 116 are provided on the left side of the first window cover 114 and the right side of the second window cover 115. Through the design of the protection plates 116 and combined with the use of the first window cover 114 and the second window cover 115, the first window 141 and the second window 151 can be better protected, and the occurrence of foreign matters such as external dust adhering to the first window 141 and the second window 151 is largely avoided, thereby further improving the stability and reliability of the test results.

[0062] Preferably, the material of the protection plate 116 is acrylic.

[0063] As Figure 1 shown, in an embodiment of the present invention, the first liquid inlet channel 12 and the first liquid outlet channel 13 are respectively arranged on the top cover 112 and the bottom cover 113. Through this design, the liquid entering the test kettle 1 from the outside can circulate and flow more smoothly, which is beneficial to the smooth progress of the performance test of the sample to be tested 26.

[0064] As Figure 2 shown, in an embodiment of the present invention, the trough body 21 includes a second main body 211 and a light-transmissive piston plate 212 connected to the right end of the second main body 211, and the pressure hole 22 is arranged on the piston plate 212. Through this design, the test trough 2 is constructed as a split structure. On the one hand, it is convenient to place the sample to be tested 26 inside the trough body 21, and on the other hand, it also reduces the manufacturing difficulty of the trough body 21 and has better economy.

[0065] As Figure 2As shown, in an embodiment of the present invention, a positioning hole 23 is formed in the piston plate 212, and the piston 25 is configured to partially extend into the positioning hole 23. Through this design, the position of the piston 25 in the longitudinal direction is more fixed, avoiding the longitudinal shaking of the piston 25 during the sliding process, thereby improving the stability of the installation and movement of the piston 25, and also being beneficial to improving the accuracy and precision of the test results.

[0066] As Figure 2 shown, in an embodiment of the present invention, a sixth sealing ring 251 is provided between the part of the piston 25 extending into the interior of the positioning hole 23 and the piston plate 212. Through this design, the occurrence of damage to the piston 25 and the piston plate 212 caused by the direct friction between the hard surfaces of the piston 25 and the piston plate 212 during the movement of the piston 25 is avoided. It also enables the positioning hole 23 to better play its role, making the installation state of the piston 25 more stable, and making the movement process of the piston 25 smoother, which helps to improve the accuracy and precision of the test results.

[0067] As Figure 1 and Figure 2 shown, in an embodiment of the present invention, the second liquid inlet channel 28 and the second liquid outlet channel 29 are respectively arranged at the upper and lower ends of the second main body 211. Through this design, the liquid in the test kettle 1 can enter and flow out of the interior of the test tank 2 more smoothly to contact and react with the sample to be tested 26, thereby facilitating the smooth progress of the imbibition treatment, testing, and diversion performance testing of the sample to be tested 26.

[0068] Preferably, in order to enable the liquid to directly contact the sample to be tested 26 after entering the test tank 2, both the second liquid inlet channel 28 and the second liquid outlet channel 29 are directly communicated with the test cavity 27.

[0069] As Figure 2 shown, in an embodiment of the present invention, the tank body 21 further includes a third window cover 213 which is arranged on the left side of the second main body 211 and outside the third window 241 and is configured as a hollow structure. Through the design of the third window cover 213, it plays a role in protecting and shielding the third window 213, thereby helping to keep the third window 213 in a clean environment, and further being able to avoid affecting the test results of the sample to be tested 26 to a certain extent due to the pollution of the third window 213.

[0070] As Figure 2As shown, in an embodiment of the present invention, there are at least two layers of sample gaskets 271 arranged in the test chamber 27, and the sample to be tested 26 is arranged between the two layers of sample gaskets 271. Through this design, when the piston 25 is pressed and moves towards the inside of the test groove 1 to transmit pressure, the pressure cannot be directly transmitted to the sample to be tested 26, but is transmitted to the sample to be tested 26 through the sample gaskets 271 on both sides of the sample to be tested 26. Thus, to a great extent, it avoids the situation that the sample to be tested 26 is easily damaged due to the direct pressure transmission from the piston 25 and the third viewing window 241 to the sample to be tested 26, ensures the integrity of the structure of the sample to be tested 26, and thus helps to obtain accurate measurement results.

[0071] Preferably, the number of layers of the sample gaskets 271 arranged in the test chamber 27 is an even number of layers.

[0072] Preferably, in order to obtain more accurate measurement results, the number of sample gaskets 271 on the left and right sides of the sample to be tested 26 is equal.

[0073] Preferably, there is one layer of sample gasket 271 on each of the left and right sides of the sample to be tested 26.

[0074] As Figure 1 shown, in an embodiment of the present invention, a bracket 16 for placing the test groove 2 is arranged at the lower end inside the test kettle 1. Through this design, the test groove 2 can be stably placed inside the test kettle 1, which helps to make the sample to be tested 26 inside the test groove 2 in a stable test environment, and further helps to obtain more accurate test results.

[0075] In an embodiment not shown, a heating jacket is arranged outside the test kettle 1. Through this design, the device 100 can not only provide different hydraulic test environments for the sample to be tested 26 by adjusting the magnitude of the liquid pressure entering the inside of the test kettle 1, but also provide different test temperatures for the sample to be tested 26 by controlling the heating jacket, so that it can measure the imbibition performance and diversion ability of the sample to be tested 26 under different pressure and temperature conditions, expanding the application range of the device 100.

[0076] The device 100 according to the present invention has a simple structure, is convenient to operate, and realizes the function of testing the in-situ diversion performance after imbibition of the sample to be tested 26, greatly improving the efficiency and accuracy of testing the diversion performance of the sample to be tested 26.

[0077] According to the second aspect of the present invention, a method for testing the in-situ diversion performance after imbibition is provided.

[0078] The method for testing the in-situ diversion performance after imbibition is carried out by using the device 100 as described above, and includes the following steps:

[0079] 1) Place the test cell 2 with the sample 26 to be tested inside correctly in the test autoclave 2;

[0080] 2) Control the liquid circulation control system to inject liquid into the test autoclave 2 to make the inside of the test autoclave 2 reach a predetermined pressure;

[0081] 3) Make the sample 26 to be tested undergo imbibition under the action of the liquid;

[0082] 4) Control the liquid circulation control system to make the inside of the test autoclave 1 and the test cell 2 in a liquid circulation state;

[0083] 5) Turn on the observation and analysis system and obtain the flow conductivity of the sample 26 to be tested after imbibition through the observation and analysis system.

[0084] In an embodiment of the present invention, step 2) further includes using a heating jacket to heat the liquid in the test autoclave 1 to a predetermined temperature to perform imbibition on the sample 26 to be tested and in-situ flow conductivity test after imbibition under a certain pressure and temperature.

[0085] Further, in an embodiment of the present invention, the predetermined pressure value in step 2) is 70 MPa, and the predetermined temperature value is 180 °C.

[0086] In an embodiment of the present invention, in step 3), before the sample 26 to be tested undergoes imbibition, the observation and analysis system is turned on, and after the sample 26 to be tested starts to imbibe, the imbibition performance of the sample 26 to be tested is measured through the observation and analysis system. With this design, it is possible to simultaneously measure the imbibition performance and flow conductivity of the sample 26 to be tested only by using the device 100, improving the working efficiency of performance testing and expanding the applicable range of the device 100.

[0087] The method for in-situ flow conductivity test after imbibition according to the present invention can also achieve other technical effects that can be achieved by the device 100 according to the present invention, which will not be elaborated here.

[0088] In the present invention, the sample 26 to be tested can be an object such as a rock slab or a steel plate.

[0089] In the present invention, the specific meanings of "up", "down", "inside", "outside", "middle", "edge", etc. when expressing orientation terms are based on Figure 1 the drawing state of the device 100 in the middle.

[0090] Finally, it should be noted that although the present invention has been described in detail with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An apparatus for in-situ testing of the diversion performance after imbibition, comprising: A test kettle (1), including a kettle body (11), a first liquid inlet channel (12) and a first liquid outlet channel (13) which are arranged on the kettle body (11) and are configured to communicate with a liquid circulation control system, and a first window (14) and a second window (15) which are oppositely arranged on the side wall of the kettle body (11), and a first viewing window (141) and a second viewing window (151) are respectively arranged inside the first window (14) and the second window (15); and A test tank (2), arranged inside the test kettle (1), including a tank body (21), a second liquid inlet channel (28) and a second liquid outlet channel (29) arranged on the tank body (21), a pressure hole (22) opened on one side of the tank body (21), and a third window (24) arranged on the side of the tank body (21) opposite to the pressure hole (22), a piston (25) is arranged inside the tank body (21), a third viewing window (241) is arranged inside the third window (24), and a test cavity (27) for placing a sample to be tested (26) is formed between the piston (25) and the third viewing window (241), Wherein, the apparatus for in-situ testing of the diversion performance after imbibition is configured to be combined with an observation and analysis system, and the state of the liquid inside the test kettle (1) is adjusted through the liquid circulation control system, so that the sample to be tested (26) can perform imbibition, and the diversion performance of the sample to be tested (26) can be tested in-situ after the imbibition ends.

2. The device for in-situ testing of diversion performance after imbibition according to claim 1, wherein: The kettle body (11) includes a first main body (111) configured as a bottomless cylinder and a top cover (112) and a bottom cover (113) respectively connected to the upper and lower ends of the first main body (111).

3. The device for in-situ testing of diversion performance after imbibition according to claim 2, wherein: The first liquid inlet channel (12) and the first liquid outlet channel (13) are respectively arranged on the top cover (112) and the bottom cover (113).

4. The device for in-situ testing of diversion performance after imbibition according to claim 3, characterized in that: The kettle body (11) includes a first viewing window cover (114) and a second viewing window cover (115) which are respectively arranged outside the first viewing window (141) and the second viewing window (151) and are both configured as hollow structures.

5. The device for in-situ testing of diversion performance after imbibition according to claim 4, characterized in that: Guard plates (116) are arranged on the left side of the first viewing window cover (114) and the right side of the second viewing window cover (115).

6. The device for in-situ testing of diversion performance after imbibition according to any one of claims 1 to 5, characterized in that: The tank body (21) includes a second main body (211) and a piston plate (212) connected to the right end of the second main body (211), and the pressure hole (22) is arranged on the piston plate (212).

7. The device for in-situ testing of the diversion performance after imbibition according to claim 6, characterized in that: The second liquid inlet channel (28) and the second liquid outlet channel (29) are respectively arranged on the upper and lower ends of the second main body (211).

8. The device for in-situ testing of diversion performance after imbibition according to claim 7, characterized in that: The tank body (21) includes a third viewing window cover (213) arranged on the left side of the second main body (211) and outside the third viewing window (241).

9. The device for in-situ testing of diversion performance after imbibition according to claim 8, characterized in that: No less than two layers of sample gaskets (271) are arranged in the test cavity (27), and the sample to be tested (26) is arranged between the two layers of sample gaskets (271).

10. The device for in-situ testing of diversion performance after imbibition according to any one of claims 1 to 5, characterized in that: Inside the test kettle (1), a bracket (16) for placing the test tank (2) is provided.

11. The device for in-situ testing of diversion performance after imbibition according to any one of claims 1 to 5, characterized in that: A heating jacket is provided outside the test kettle (1).

12. A method for in-situ testing the diversion performance after imbibition, which is carried out by using the device for in-situ testing the diversion performance after imbibition according to any one of claims 1 to 11, and includes the following steps: 1) Place the test tank (2) containing the sample to be tested (26) into the test kettle (1); 2) Inject liquid into the test kettle (1) to make the inside of the test kettle (1) reach a predetermined pressure; 3) Make the sample to be tested (26) undergo imbibition under the action of the liquid; 4) Control the liquid circulation control system to make the inside of the test kettle (1) in a liquid circulation state; 5) Obtain the diversion performance of the sample to be tested (26) after the imbibition through the observation and analysis system.

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