Multifunctional test device for soluble downhole tool and test method of multifunctional test device

Abstract

The invention discloses a multifunctional testing device for a soluble downhole tool and a testing method of the multifunctional testing device. The multifunctional testing device comprises a tool setting device, a pressure testing device, a rotary driving device, a dissolving tank and a base. The setting device and the pressure testing device are fixed on the side plate and are fixedly connected with the base; according to the invention, controllable load, constant temperature, constant pressure, circulating fluid and shaft environment required by soluble downhole tool test can be simulated, and wastes generated in the test process can be treated in a green manner. Performance parameters such as setting, pressure bearing and dissolution of the tool can be obtained through a soluble downhole tool physical performance test, and test data such as pressure and temperature are provided for practical application of the tool. The testing device can be used for testing various performances of the soluble downhole tools, is convenient to install and operate, can be used for simultaneously testing a plurality of groups of soluble downhole tools in a flow way, and can be used for recycling the solution in the testing process, so that the generation of wastes is reduced.

Description

Technical Field

[0001] The invention belongs to the field of petroleum soluble downhole tool testing equipment and relates to a multifunctional testing device for soluble downhole tools and a testing method thereof. Background Art

[0002] Soluble downhole tools are a new technology developed to solve the risks of blocking production channels, drilling difficulties and other risks that affect normal production when using traditional isolation tools during oil testing and completion. Because they can quickly dissolve or degrade by themselves after completing the operation, simplifying the subsequent operation process, they have been rapidly applied on a large scale in oil fields. Effective evaluation of the performance of soluble downhole tools is of great significance to ensuring the safety of the oil and gas production process. At present, most of the performance evaluations of soluble downhole tools are based on traditional large-scale downhole tool simulation test systems or different equipment is selected for different test items. Among them, the traditional downhole tool simulation test system has problems such as being too large compared to the soluble tool test equipment, lacking dissolution testing, and difficulty in handling waste liquid after the test; testing through different equipment has problems such as inconvenient installation, the need for special sealing tools, low efficiency, deviations in measurement results, and difficulty in handling waste liquid after the test. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a multifunctional testing device for soluble downhole tools and a testing method thereof, which can realize the setting test, pressure test, temperature test, dissolution test, etc. of soluble downhole tools, is easy to operate and can carry out multiple sets of process tests at the same time. The setting test is completed by a hydraulic mechanism, which has a wide range of applications and is more universal; the waste liquid generated during the test is separated into solid and liquid through a waste liquid conversion box, and the converted liquid is reused continuously, and the solid waste is centrally disposed of, which effectively solves the problems of test efficiency, accuracy, environmental protection, etc.

[0004] The present invention is achieved through the following technical solutions:

[0005] A multifunctional testing device for soluble downhole tools, comprising:

[0006] Tool setting device, pressure testing device, rotary drive device, dissolution tank and base;

[0007] The tool setting device and the pressure testing device are installed on one side of the base, and the rotary drive device is installed on the other side of the base;

[0008] The dissolution tank is arranged on a base between the tool setting device and the rotary drive device;

[0009] During the setting test, the tool setting device is connected to the rotary drive device via a tool assembly;

[0010] During the pressure test, the pressure test device is connected to the rotary drive device via the tool assembly after sealing; the dissolution tank is used to perform a dissolution test on the tool assembly after the pressure test.

[0011] Preferably, the tool setting device comprises a hydraulic control mechanism, a connecting cylinder and a connecting shaft;

[0012] One end of the connecting shaft is threadedly connected to the hydraulic control mechanism, and the other end of the connecting shaft is connected to the tool assembly; the connecting sleeve is sleeved on the connecting shaft and installed in conjunction with the hydraulic control mechanism, and the hydraulic control mechanism is electrically connected to the hydraulic pump station and the control system.

[0013] Preferably, the pressure testing device comprises a sealing mechanism, a heating mechanism, a pressure sensor, a temperature sensor and a pressure device;

[0014] The sealing mechanism is used to connect with the tool assembly after sealing to form a closed annulus; the heating mechanism is arranged on the tool assembly after sealing; the pressure sensor, temperature sensor and pressure device are arranged at the end of the sealing mechanism; the heating mechanism is electrically connected to the induction heating device and the control system; the pressure device is electrically connected to the boosting device and the control system; the pressure sensor and temperature sensor are electrically connected to the control system.

[0015] Preferably, the rotary drive device comprises a drive motor, a rotating disk, a drive wheel and a limit device; the drive motor is connected to the rotating disk through a gear; the drive motor is fixedly mounted on the connecting seat, and the drive wheel is arranged at the bottom of the connecting seat; the bottom of the connecting seat is mounted on the limit device;

[0016] When in use, the limiting device is fixedly connected to the base by bolts; the tool assembly after setting is kept coaxial with the tool setting device by driving the motor.

[0017] Preferably, a plurality of clamping jaws are distributed on the rotating disk, and the tool assembly is clamped by the clamping jaws of the rotating disk and then connected to the tool setting device.

[0018] Preferably, a solution box is provided on one side of the outside of the dissolution tank, and a waste liquid conversion box is provided on the outside of the dissolution tank and adjacent to the solution box; the dissolution tank is connected to the solution box;

[0019] The dissolution tank is provided with a heating mechanism 2 and a lifting device inside; the lifting device is used to place the tool assembly after the pressure test in the dissolution tank; the dissolution tank is provided with a temperature sensor 2; and the top of the dissolution tank is provided with a retractable cover.

[0020] Preferably, the tool sealing device and the pressure testing device are fixed on the side plates, the side plates are welded and fixed on the base, and the base is fixed to the ground by anchor bolts.

[0021] Preferably, the side plate is provided with a plurality of clamping claws for clamping and fixing the tool sealing device and the pressure testing device.

[0022] Preferably, a slide groove is provided on the base, the rotary drive device is placed in the slide groove and moved by a telescopic mechanism, one end of the telescopic mechanism is connected to the bottom of the rotary drive device, and the other end of the telescopic mechanism is connected to the inner wall of the slide groove.

[0023] A test method of a multifunctional test device for a soluble downhole tool comprises the following steps:

[0024] S1. Place the tool assembly on the tool setting device and fix it by the claw fixture on the rotary drive device to perform a setting test on the tool assembly;

[0025] S2. Install the tool assembly after setting on the pressure test device through the rotary drive device to form a closed annulus. After the rotary drive device is fixedly connected to the base, the pressure test is performed after heating;

[0026] S3. Place the tool assembly after the pressure test at the dissolution station through the rotary drive device, place the tool assembly in the dissolution tank through the lifting device of the dissolution tank, inject the solution in the solution box in the dissolution tank into the dissolution tank, and after heating, perform the tool dissolution test until the test is completed.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] The test device of the present invention includes a tool setting device, a pressure testing device, a rotary drive device, a dissolution tank, and a base, which can realize the setting test, pressure test, temperature test, dissolution test, etc. of the soluble downhole tool, complete the performance test of the soluble downhole tool, and the equipment is simple and convenient to operate, and can carry out multiple sets of process tests at the same time, with high efficiency. The device adopts a hydraulic mechanism to carry out the setting test, which has a wider range of applications; the device belongs to an integrated device, has a control and acquisition system, and is equipped with a high-precision sensor, and has high test accuracy. The present invention can simulate the controllable load, constant temperature, constant pressure, circulating fluid, and wellbore environment required for the soluble downhole tool test, and can greenly treat the waste generated during the test. Through the actual performance test of the soluble downhole tool, the performance parameters of the tool such as setting, pressure, and dissolution can be obtained, and the test data such as pressure and temperature can be provided for the actual application of the tool. The test device can carry out a variety of performance tests of the soluble downhole tool, is easy to install and operate, can carry out multiple sets of process tests of the soluble downhole tool at the same time, and the solution is recycled during the test, reducing the generation of waste.

[0029] The test method of the present invention is as follows: the tool assembly is passed through a rotary drive device and its auxiliary claw fixture, and the tool is first tested for sealing by cooperating with a tool sealing device; secondly, the tool assembly after sealing is installed on a pressure testing device to form a closed annulus, and the rotary drive device is fixed to the base by bolts, and the temperature is increased by a heating mechanism, and a pressure test is performed by a pressure device; finally, the tool assembly after the pressure test is placed in a dissolution station, and the lifting device of the dissolution tank places the tool assembly in the dissolution tank, and the circulating pump in the solution box injects the solution into the dissolution tank, and the heating mechanism is heated to perform a tool dissolution test until the test is completed. After the test, the solid waste is cleaned up and disposed of in a centralized manner. This method can effectively ensure the accuracy of the performance test data of soluble downhole tools, and the test process is energy-saving and environmentally friendly.

[0030] Furthermore, the device is equipped with a special waste liquid conversion box, which can achieve solid-liquid separation during the test process, and convert the waste liquid for reuse through filtration, reaction, etc., and centrally dispose of solid waste, which is more green and environmentally friendly; BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic plan view of the multifunctional testing device for soluble downhole tools of the present invention;

[0032] Figure 2 It is a three-dimensional schematic diagram of the multifunctional testing device for soluble downhole tools of the present invention;

[0033] Figure 3 It is a three-dimensional schematic diagram of a tool setting device and a pressure testing device of the present invention;

[0034] Figure 4 Schematic diagram of the dissolution tank of the present invention; Figure (a) is a structural diagram; Figure (b) is a perspective view;

[0035] Figure 5 It is a schematic diagram of the setting test steps of the present invention;

[0036] Figure 6 It is a schematic diagram of the pressure test steps of the present invention;

[0037] Figure 7 It is a schematic diagram before the dissolution test steps of the present invention;

[0038] Figure 8 Schematic diagram of the dissolution test steps of the present invention.

[0039] In the figure, 1. tool sealing device; 2. pressure testing device; 3. rotary drive device; 4. base; 5. dissolution tank; 6. hydraulic control mechanism; 7. connecting cylinder; 8. connecting shaft; 9. sealing mechanism; 10. pressure sensor; 11. temperature sensor 1; 12. pressing device; 13. heating mechanism 1; 14. driving motor; 15. rotating disk; 16. driving wheel; 17. limiting device; 18. telescopic mechanism; 19. slide; 20. side panel; 21. solution tank; 22. waste liquid conversion tank; 23. retractable cover; 24. lifting device; 25. heating mechanism 2; 26. temperature sensor 2. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0041] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0042] like Figure 1 , Figure 2As shown, a multifunctional testing device for soluble downhole tools includes a tool sealing device 1, a pressure testing device 2, a rotary drive device 3, a dissolution tank 5, and a base 4. The sealing device 1 and the pressure testing device 2 are fixed on the side plate 20 and fixedly connected to the base 4. The tool sealing device 1 connects the soluble downhole tool with the tool sealing device 1 through the connecting tube 7 and the connecting shaft 8 to complete the tool sealing test. The pressure testing device 2 is connected to the tool assembly (the combination of the soluble downhole tool and the sealing casing) after sealing through the sealing mechanism 9 to form a closed annulus. The pressure test is performed by the pressure device 12, and the temperature test is performed by the heating mechanism 13. The pressure sensor 10 and the temperature sensor 11 are used for pressure and temperature collection, respectively. The rotary drive device 3 is placed in the dedicated slide groove 19 of the base 4 and is moved by the telescopic mechanism 18. A plurality of claws are distributed on the rotary disk 15 for clamping the tool assembly, and driven by the driving motor 14 to cooperate with the sealing device 1, the pressure testing device 2, etc.; after the rotary drive device 3 reaches the specified position, the limit device 17 is connected to the base 4 by bolts to form a whole, so as to ensure the stability of the equipment during operation. The dissolution tank 5 is used for the dissolution test of soluble tools, and the temperature is controlled by the heating mechanism 25; the circulating pump in the solution tank 21, the dissolution tank 5 and the waste liquid conversion tank 22 circulates the solution, and the solid-liquid separation and purification of the waste liquid are carried out in the waste liquid conversion tank 22 by filtering, component conversion, etc., and the waste liquid is injected back to the solution tank 21 through the circulating pump to realize the reuse of the solution and solid waste treatment; the dissolution tank 5 is made of stainless steel and has a temperature resistance of more than 100 degrees Celsius.

[0043] Preferably, Figure 3 As shown, the tool setting device 1 includes a hydraulic control mechanism 6, a connecting tube 7, and a connecting shaft 8. The hydraulic control mechanism 6 is controlled by oil pressure, has an oil inlet and an oil outlet, a maximum extension length of 500mm, a maximum load of 30t, and an external thread at the front end of the hydraulic rod, which matches the internal thread of the connecting shaft 8. The connecting tube 7 is made of 42CrMo and is modulated to 32-36HRC, with an outer diameter of Φ120mm and a wall thickness of 10mm. The connecting shaft 8 is made of 42CrMo, with an outer diameter of Φ40mm, and has a connecting thread inside to match the tool.

[0044] Preferably, Figure 3As shown, the pressure testing device 2 includes a sealing mechanism 9, a heating mechanism 13, a pressure sensor 10, a temperature sensor 11, and a pressure device 12. The sealing mechanism 9 is a multi-stage O-ring seal, and the sealing material is ether-containing fluororubber. The pressure sensor 10 has an accuracy of 0.1MPa and a range of 0 to 210MPa; the temperature sensor 11 has an accuracy of 0.1°C and a range of 0 to 200°C. The pressure device 12 is connected to the booster device and the control system, and has a pressure control and acquisition function, and the maximum pressure is 210MPa. The heating mechanism 13 is connected to the induction heating device and the control system, and has a temperature control and acquisition function, and the maximum temperature is 200°C.

[0045] Preferably, Figure 3 As shown, the sealing device 1 and the pressure testing device 2 are fixed on the side plate 20, and the side plate 20 is also provided with a clamping claw tooling for clamping.

[0046] Preferably, Figure 2 As shown, the rotary drive device 3 includes a drive motor 14, a rotating disk 15, a drive wheel 16, and a limit device 17, which are placed in a dedicated slide groove 19 of the base 4 and moved by a telescopic mechanism 18. The drive motor 14 is connected to the rotating disk 15 by gears, and the speed is controllable and controlled by a control system. The rotating disk 15 is equipped with multiple sets of clamping claws. After the rotary drive device 3 reaches the specified position, the limit device 17 is connected to the base 4 by bolts, and a total of 6 M32 bolts are set. The telescopic mechanism 18 is a multi-stage hydraulic cylinder, which is controlled by oil pressure and has a maximum stroke of 500mm.

[0047] Preferably, Figure 2 As shown, the base 4 has a dedicated slide groove 19, which is connected to the side plate 20 by welding, has a width of 1000mm and a length of 2000mm. The base 4 is fixed to the ground by anchor bolts.

[0048] Preferably, Figure 4 As shown, the dissolution tank 5 includes a lifting device 24, a heating mechanism 25, a temperature sensor 26, a solution tank 21, a waste liquid conversion tank 22, and a retractable cover 23. The dissolution tank 5 is made of stainless steel and has a temperature resistance of more than 100 degrees Celsius. The solution tank 21 includes a solvent addition tank and a circulation pump, and the dissolution is 50L, and the material is stainless steel. The waste liquid conversion tank 22 includes a filter partition, a solid waste recovery bag, a cooling device, a liquid processor, a circulation pump, etc. The heating mechanism 25 adopts a resistance wire heating method, and has a temperature control and collection function, with a maximum temperature of 200°C; the temperature sensor 26 has an accuracy of 0.1°C and a range of 0 to 200°C.

[0049] A method for using a multifunctional testing device for a soluble downhole tool comprises the following steps:

[0050] S1. Place the tool assembly on the tool setting device, fix it by rotating the upper claw fixture of the drive device, and perform a setting test on the tool;

[0051] S2. Install the tool assembly after setting on the pressure test device through the rotary drive device to form a closed annulus, connect and fix the rotary drive device to the base through bolts, increase the temperature through the heating mechanism, and perform pressure test through the pressure device;

[0052] S3. The tool assembly after the pressure test is placed at the dissolution station through the rotary drive device, and the lifting device of the dissolution tank places the tool assembly after the pressure test in the dissolution tank. The circulating pump in the solution tank injects the solution into the dissolution tank, and the heating mechanism heats it to carry out the tool dissolution test until the test is completed.

[0053] The method of using a multifunctional testing device for soluble downhole tools is as follows:

[0054] S1. The connecting tube 7 is installed in cooperation with the hydraulic control mechanism 6, and the soluble downhole tool assembly is connected to the hydraulic control mechanism 6 through the connecting shaft 8;

[0055] S2. Fix the setting casing through the claw tooling on the rotating disk 15 in the rotary drive device 3. Control the drive motor 14 to keep the setting casing and the tool setting device 1 coaxial, move the rotary drive device 3 through the telescopic mechanism 18, place the soluble downhole tool in the center of the setting casing, and connect the limit device to the base through bolts, such as Figure 5 As shown;

[0056] S3. The hydraulic control mechanism 6 is controlled by the control system and the hydraulic pump station to perform a setting test, and the pressure curve is recorded in real time, and the final pressure value is recorded;

[0057] S4. Move the rotary drive device 3 through the telescopic mechanism 18 to separate the tool assembly after setting from the tool setting device 1, and install the sealing plug inside the tool. Control the drive motor 14 to rotate the rotary disk 15, keep the tool assembly after setting coaxial with the pressure test device 2, move the rotary drive device 3 through the telescopic mechanism 18 until the setting sleeve and the sealing mechanism 9 are matched, and connect the limit device to the base through bolts;

[0058] S5. The pressure device 12 and the heating mechanism 13 are controlled by the control system, the boost system and the induction heating device to perform pressure test and temperature test, and the pressure sensor 10 and the temperature sensor 11 are recorded in real time. Figure 6 As shown;

[0059] S6. Move the rotary drive device 3 through the telescopic mechanism 18 to separate the pressure-tested tool assembly from the pressure-testing device 2, and remove the sealing plug installed inside the tool. Control the drive motor 14 to rotate the rotary disk 15 to keep the pressure-tested tool assembly and the clamping claw tooling on the side plate 20 coaxial, and move the rotary drive device 3 through the telescopic mechanism 18 until the clamping is completed. Figure 7 As shown;

[0060] S7. Open the retractable cover 23 of the dissolution tank 5, control the lifting device 24 to make it fit the outer wall of the pressure-tested tool assembly, and move the rotary drive device 3 through the telescopic mechanism 18 until the pressure-tested tool assembly is detached and placed on the upgrading device 24. Control the lifting device 24 to place the pressure-tested tool assembly in the dissolution tank 5, and close the retractable cover 23;

[0061] S8. The solution is injected into the dissolution tank 5 through the circulating pump in the solution tank 21, and the heating mechanism 25 is controlled to heat the solution, and the dissolution test is performed, and the dissolution temperature is recorded in real time through the temperature sensor 26;

[0062] S9. Turn on the circulation pump in the dissolution tank 5, inject the waste liquid generated by the test into the waste liquid conversion box 22, separate the solid and liquid and purify the waste liquid by filtering, component conversion, etc., and inject it back into the solution tank 21 through the circulation pump in the waste liquid conversion box 22. Figure 8 As shown;

[0063] S10. After the test is completed, remove the sealing casing and circulate the solution in the dissolution tank until reusable liquid remains.

[0064] Preferably, the method of the present invention can effectively ensure the accuracy of the performance test data of the soluble downhole tool, which is of great significance for ensuring the quality and safety of the soluble tools used in the oil and gas production process. In addition, the test process is energy-saving and environmentally friendly, and has a certain protective effect on the environment and test personnel.

[0065] It should be noted that the terms "one", "two", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A multifunctional testing device for soluble downhole tools, It is characterized in that include, A tool setting device (1), a pressure testing device (2), a rotary drive device (3), a dissolving tank (5) and a base (4); The tool setting device (1) and the pressure testing device (2) are installed on one side of the base (4), and the rotation driving device (3) is installed on the other side of the base; The dissolution tank (5) is arranged on a base (4) between the tool setting device (1) and the rotary drive device (3); During the setting test, the tool setting device (1) is connected to the rotary drive device (3) via a tool assembly; During the pressure test, the pressure test device (2) is connected to the rotary drive device (3) via the tool assembly after sealing; the dissolution tank (5) is used to perform a dissolution test on the tool assembly after the pressure test.

2. A multifunctional testing device for soluble downhole tools according to claim 1, It is characterized in that The tool setting device (1) comprises a hydraulic control mechanism (6), a connecting cylinder (7) and a connecting shaft (8); One end of the connecting shaft (8) is threadedly connected to the hydraulic control mechanism (6), and the other end of the connecting shaft (8) is connected to the tool assembly; the connecting tube (7) is sleeved on the connecting shaft (8) and installed in conjunction with the hydraulic control mechanism (6); the hydraulic control mechanism (6) is electrically connected to the hydraulic pump station and the control system.

3. A multifunctional testing device for soluble downhole tools according to claim 1, It is characterized in that The pressure testing device (2) comprises a sealing mechanism (9), a heating mechanism (13), a pressure sensor (10), a temperature sensor (11) and a pressure device (12); The sealing mechanism (9) is used to connect with the tool assembly after sealing to form a closed annulus; the heating mechanism (13) is sleeved on the tool assembly after sealing; the pressure sensor (10), the temperature sensor (11) and the pressure device (12) are arranged at the end of the sealing mechanism (9); the heating mechanism (13) is electrically connected to the induction heating device and the control system; the pressure device (12) is electrically connected to the boosting device and the control system; the pressure sensor (10) and the temperature sensor (11) are both electrically connected to the control system.

4. A multifunctional testing device for soluble downhole tools according to claim 1, It is characterized in that The rotary drive device (3) comprises a drive motor (14), a rotating disk (15), a drive wheel (16) and a limit device (17); the drive motor (14) and the rotating disk (15) are connected via gears; the drive motor (14) is fixedly mounted on a connecting seat, and the drive wheel (16) is arranged at the bottom of the connecting seat; the bottom of the connecting seat is mounted on the limit device (17); When in use, the limiting device (17) is fixedly connected to the base (4) by means of bolts; and the tool assembly after setting is kept coaxial with the tool setting device (1) by means of the driving motor (14).

5. A multifunctional testing device for soluble downhole tools according to claim 4, It is characterized in that A plurality of clamping jaws are distributed on the rotating disk (15), and the tool assembly is clamped by the clamping jaws of the rotating disk (15) and then connected to the tool setting device (1).

6. A multifunctional testing device for soluble downhole tools according to claim 1, It is characterized in that A solution box (21) is provided on one side outside the dissolution tank (5), and a waste liquid conversion box (22) is provided on the outside of the dissolution tank (5) and adjacent to the solution box (21); the dissolution tank (5) is in communication with the solution box (21); The dissolution tank (5) is provided with a second heating mechanism (25) and a lifting device (24) inside; the lifting device (24) is used to place the tool assembly after the pressure test in the dissolution tank (5); the dissolution tank (5) is provided with a second temperature sensor (26); and the top of the dissolution tank (5) is provided with a retractable cover plate (23).

7. A multifunctional testing device for soluble downhole tools according to claim 1, It is characterized in that The tool setting device (1) and the pressure testing device (2) are fixed on the side plate (20), the side plate (20) is welded and fixed on the base (4), and the base (4) is fixed to the ground by anchor bolts.

8. A multifunctional testing device for soluble downhole tools according to claim 7, It is characterized in that The side plate (20) is provided with a plurality of clamping claws for clamping and fixing the tool setting device (1) and the pressure testing device (2).

9. A multifunctional testing device for soluble downhole tools according to claim 1, It is characterized in that The base (4) is provided with a slide groove (19), the rotary drive device (3) is placed in the slide groove (19), and is moved by a telescopic mechanism (18), one end of the telescopic mechanism (18) is connected to the bottom of the rotary drive device (3), and the other end of the telescopic mechanism (18) is connected to the inner wall of the slide groove (19).

10. A testing method of the multifunctional testing device for soluble downhole tools as claimed in claim 1, It is characterized in that The following steps are involved: S1. Place the tool assembly on the tool setting device (1), and fix it by the claw fixture on the rotary drive device (3), and perform a setting test on the tool assembly; S2. The tool assembly after sealing is installed on the pressure test device (2) through the rotary drive device (3) to form a closed annulus, and the rotary drive device (3) is fixedly connected to the base (4), and then the pressure test is performed after heating; S3. The tool assembly after the pressure test is placed at the dissolution station through the rotary drive device (3), and the tool assembly is placed in the dissolution tank (5) through the lifting device (24) of the dissolution tank (5), and the solution in the solution box (21) in the dissolution tank (5) is injected into the dissolution tank. After heating, the tool dissolution test is carried out until the test is completed.

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