CN111964887B - Casing annulus pressure relief tool simulation experiment device and test method - Google Patents

Abstract

The invention discloses a simulation experiment device and a test method of a casing annular pressure relief tool, comprising a hydraulic pump station for providing hydraulic power, a hydraulic system, a water tank, a manual overflow valve, and a high-pressure chamber. The hydraulic pump station is connected by pipelines The input end of the hydraulic system and the output end of the hydraulic system are respectively connected to the bottom of the water tank and the lower end of the high pressure chamber through pipelines, and the upper end of the high pressure chamber is connected to the upper end of the water tank and the manual overflow valve through pipelines. The experimental device and the testing method of the present invention not only meet the requirements for performance detection and testing of the casing annulus pressure relief tool before going downhole, but also meet the pressure relief performance testing requirements under different pressure relief directions and pressure relief environment pressures. The reliability of working performance of air pressure relief tools plays an important role and significance, which is conducive to the accurate control of annular trap pressure.

Description

A simulation experiment device and testing method of casing annular pressure relief tool

technical field

The invention relates to the technical field of experimental devices, in particular to a simulation experimental device and a testing method of a casing annular pressure relief tool.

Background technique

Casing annulus trap pressure is one of the complex problems often encountered in the testing and production stages of deepwater oil and gas completions. During the completion test and production stage, when the high-temperature fluid in the formation flows through the well section below the submarine mudline, the high-temperature production fluid will conduct radial heat transfer in the upper well section, causing the thermal expansion of the closed annulus fluid to generate trap pressure; Due to the influence of the deep ocean environment, the wellhead has to use a special special underwater wellhead, which makes the trap pressure in the closed annulus unable to be released; when the trap pressure exceeds the internal pressure resistance or external extrusion strength of the casing, the casing may be damaged. The accident seriously threatens the safe production of deepwater oil and gas wells, and greatly restricts the process of deepwater oil and gas exploration and development.

In order to realize the control of casing annular trap pressure, the patent number CN201810627556.1, "Recoverable Pressure Relief Tool and Completion Well Body Structure for Releasing Annular Trap Pressure", discloses a The recoverable pressure relief tool of the hoop; the patent is CN201820359362.3 "A Bidirectional Controllable Deep Water Annular Trap Pressure Relief Device" discloses a bidirectional controllable pressure relief tool installed on the casing coupling; These two pressure relief tools are designed to be installed on the casing coupling. When the trapped pressure exceeds the rated working pressure, the pressure relief valve is opened to release the pressure, and when the trapped pressure is lower than the rated working pressure, the pressure relief valve is closed, thereby starting the To control the trap pressure of the annular space, protect the integrity of the casing and ensure the safe production of oil and gas wells.

However, since this type of pressure relief tool cannot be detected or monitored after running, it is necessary to ensure that the rated pressure performance of pressure relief meets the pressure relief requirements before going downhole. This requires a casing annulus that can quickly and easily simulate the downhole pressure environment. Pressure relief tool simulation experimental device and test method.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a simulation experiment device and a testing method of a casing annulus pressure relief tool, so as to meet the requirements of performance detection and testing of the casing annulus pressure relief tool before going downhole.

The present invention adopts following technical scheme:

A casing annulus pressure relief tool simulation experimental device, including a hydraulic pump station for providing hydraulic power, a hydraulic system, a water tank, a manual overflow valve, and a high-pressure chamber. The output end of the system is respectively connected to the bottom of the water tank and the lower end of the high pressure chamber through pipelines, and the upper end of the high pressure chamber is connected to the upper end of the water tank and the manual overflow valve through pipelines.

Preferably, the hydraulic pump station includes a three-position manual reversing valve, a high-pressure filter, a hydraulic pump, and an oil suction filter connected in sequence through pipelines, the hydraulic pump is provided with a motor, the three-position manual reversing valve, high-pressure There is a proportional relief valve and a safety valve between the filters. The safety valve is used to protect the maximum working pressure of the hydraulic system. The proportional relief valve is used to control the output pressure of the hydraulic system. The proportional relief valve and the safety valve The lower end is provided with an oil return filter.

Preferably, the hydraulic pump station further includes a hydraulic oil tank, and the oil suction filter and the oil return filter are both arranged in the hydraulic oil tank;

A liquid level thermometer is arranged in the hydraulic oil tank, and the liquid level thermometer is used to monitor the hydraulic oil level and temperature of the hydraulic oil in the oil tank.

Preferably, the hydraulic system includes a hydraulic cylinder and a loading cylinder, which are used to enter the liquid into the high pressure chamber through the hydraulic pipeline.

Preferably, the hyperbaric chamber includes an upper clamp and a lower clamp provided with an inner cavity, an outer casing, and a pressure relief device, the pressure relief device is wrapped on the outer sides of the oppositely arranged upper clamp and lower clamp, and the pressure relief device, the upper Both the clamp and the lower clamp are arranged in the outer casing.

Preferably, the upper clamp and the lower clamp are respectively provided with an inner cavity exhaust hole and an inner cavity liquid injection hole;

One end of the inner cavity exhaust hole is connected to the inner cavity, and the other end is connected to the top of the water tank;

One end of the inner cavity liquid injection hole is connected to the inner cavity, and the other end is connected to the loading cylinder;

The upper fixture is provided with an outer cavity vent hole, and the lower fixture is provided with an outer cavity liquid injection hole;

One end of the outer cavity exhaust hole is communicated with the inside of the pressure relief device, and the other end is connected with a manual overflow valve;

One end of the liquid injection hole in the outer cavity is communicated with the inside of the pressure relief device, and the other end is connected with the loading cylinder.

Preferably, a blocking ring is provided on the outer casing, and the blocking ring fixes the upper clamp in the outer casing.

Preferably, a first pressure sensor is provided on the pipeline connecting the loading cylinder and the liquid injection hole in the inner cavity, and a second pressure sensor is provided on the pipeline between the outer cavity exhaust hole and the manual overflow valve.

Preferably, sealing rings are provided between the upper clamp and the outer casing, between the lower clamp and the outer casing, between the pressure relief device and the upper clamp, and between the pressure relief device and the lower clamp.

A method for testing a casing annulus pressure relief tool simulating an experimental device, comprising the following steps:

S1. Assemble the hyperbaric chamber and connect the experimental device;

S2. Fill the water tank with working fluid, close all valves, and place the three-position manual reversing valve in the neutral position;

S3. Start the hydraulic pump, open the first valve, put the three-position manual reversing valve in the right position, and the right chamber of the hydraulic cylinder is filled with oil, so that the loading cylinder sucks the working fluid that needs to be injected into the pressure relief device from the water tank, and the loading cylinder is full. After the working fluid, close the first valve to prepare for the pressure relief test;

S4. According to the experimental requirements, carry out the pressure relief test from the inside to the outside or from the outside to the inside.

The beneficial effects of the present invention are:

1. The experimental device of the present invention has a reasonable structure and is easy to operate;

2. The present invention satisfies the requirement of performance detection and testing before the casing annulus pressure relief tool goes downhole;

3. The present invention can simultaneously satisfy the testing requirements of the casing annular pressure relief tool from the inside to the outside or from the outside to the inside;

4. The present invention can also meet the pressure relief performance test requirements under different pressure relief directions and pressure relief environment pressures, has an important role and significance for the reliability of the working performance of the casing annular pressure relief tool, and is beneficial to the measurement of the annular space trap pressure. Accurate control.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, rather than limit the present invention. .

Fig. 1 is the structural representation of the experimental apparatus of the present invention;

Fig. 2 is the structural representation of the hyperbaric chamber of the present invention;

3 is a schematic diagram of the principle of the pressure relief test from the inside to the outside of the present invention;

4 is a schematic diagram of the principle of the pressure relief test from the outside to the inside of the present invention;

shown in the picture

1—first valve, 2—second valve, 3—third valve, 4—fourth valve, 5—fifth valve, 6—sixth valve, 7—motor, 8—hydraulic pump, 9—hydraulic oil tank, 10—oil suction filter, 11—oil return filter, 12—liquid level thermometer, 13—high pressure filter, 14—proportional relief valve, 15—three-position manual reversing valve, 16—hydraulic cylinder, 17—loading cylinder , 18—water tank, 19—manual relief valve, 20—high pressure chamber, 21—first pressure sensor, 22—second pressure sensor, 23—safety valve;

30—Inner cavity exhaust hole, 31—Outer cavity exhaust hole, 32—Upper clamp, 33—Lower clamp, 34—Retaining ring, 35—Sealing ring, 36—Outer body, 37—Pressure relief device, 38—Inner cavity injection hole, 39—external cavity injection hole;

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used in this disclosure shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. As used in this disclosure, "comprises" or "comprising" and similar words mean that the elements or things appearing before the word encompass the elements or things recited after the word and their equivalents, but do not exclude other elements or things. "Up", "Down", "Left", "Right", etc. are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 4, a casing annulus pressure relief tool simulation experimental device includes a hydraulic pump station providing hydraulic power, a hydraulic system, a water tank 18, a manual overflow valve 19, a high pressure chamber 20, the hydraulic The pump station is connected to the input end of the hydraulic system through pipelines, and the output ends of the hydraulic system are respectively connected to the bottom of the water tank 18 and the lower end of the high pressure chamber 20 through pipelines, and the upper end of the high pressure chamber 20 is connected to the upper end of the water tank 18 and the manual overflow valve through pipelines 19.

Specifically, the hydraulic pump station includes a three-position manual reversing valve 15, a high-pressure filter 13, a hydraulic pump 8, a hydraulic oil tank 9, and an oil suction filter 10 connected in sequence through pipelines. The hydraulic pump 8 is provided with a motor 7 for Hydraulic pump 8 provides hydraulic power;

The three-position manual reversing valve 15 and the high-pressure filter 13 are provided with a proportional relief valve 14 and a safety valve 23. The upper ends of the proportional relief valve 14 and the safety valve 23 are both connected to the three-position manual reversing valve 15. On the pipeline between the high pressure filter 13;

The lower ends of the proportional relief valve 14 and the safety valve 23 are provided with an oil return filter 11; the oil suction filter 10 and the oil return filter 11 are both arranged in the hydraulic oil tank 9;

The safety valve 23 is used to protect the hydraulic pump station from working normally under the highest working pressure, and the proportional relief valve 14 is used to control the output pressure of the hydraulic pump station. When the pressure of the hydraulic pump station exceeds the safety pressure or the set output After the pressure, the hydraulic oil will be partially returned to the hydraulic oil tank 9 and filtered by the oil return filter 11 .

The hydraulic oil tank 9 is provided with a liquid level thermometer 12 , and the liquid level thermometer 12 is used to monitor the hydraulic oil level and the temperature of the hydraulic oil in the hydraulic oil tank 9 .

The hydraulic system includes a hydraulic cylinder 16 and a loading cylinder 17, which are used to enter the liquid into the high pressure chamber 20 through the hydraulic pipeline; when the three-position manual reversing valve 15 is in the left position, the output pressure of the hydraulic pump station acts on the left end of the hydraulic cylinder 16 to work. The hydraulic oil will push the hydraulic piston to move to the right end, and compress the liquid in the loading cylinder 17, and the liquid in the loading cylinder 17 will enter the high pressure chamber 20 through the hydraulic pipeline.

The hyperbaric chamber 20 includes an upper clamp 32 and a lower clamp 33 each provided with an inner cavity, an outer casing 36, a pressure relief device 37, and the inner cavity of the oppositely arranged upper clamp 32 and lower clamp 33 are communicated, and the pressure relief The device 37 is wrapped on the outer side of the oppositely arranged upper clamp 32 and the lower clamp 33, and the pressure relief device 37, the upper clamp 32 and the lower clamp 33 are all arranged in the outer casing 36, and the outer casing 36 is provided with a stop ring 34, The retaining ring 34 fixes the upper clamp 32 in the outer casing 36, and the retaining ring 34 is threadedly connected with the outer casing 36;

The pressure relief device 37 is a casing coupling with a recoverable pressure relief tool in the Chinese patent with the patent number of CN201810627556.1 in the prior art (specification [0031]-[0032]);

The upper clamp 32 and the lower clamp 33 are respectively provided with an inner cavity exhaust hole 30 and an inner cavity liquid injection hole 38;

One end of the inner cavity exhaust hole 30 is connected to the inner cavity, and the other end is connected to the top of the water tank 18;

One end of the inner cavity liquid injection hole 38 is connected to the inner cavity, and the other end is connected to the output end of the loading cylinder 17;

The upper clamp 32 is provided with an outer cavity exhaust hole 31, and the lower clamp 33 is provided with an outer cavity injection hole 39;

One end of the outer cavity exhaust hole 31 is connected to the inside of the pressure relief device 37, and the other end is connected to the manual overflow valve 19;

One end of the outer cavity liquid injection hole 39 is communicated with the inside of the pressure relief device 37 , and the other end is connected to the loading cylinder 17 .

There are sealing rings 35 between the upper clamp 32 and the outer casing 36, between the lower clamp 33 and the outer casing 36, between the pressure relief device 37 and the upper clamp 32, and between the pressure relief device 37 and the lower clamp 33. The air tightness of the whole device is better.

A first pressure sensor 21 is provided on the pipeline connecting the loading cylinder 17 to the inner cavity injection hole 38 , and a second pressure sensor 22 is provided on the pipeline between the outer cavity exhaust hole 31 and the manual overflow valve 19 . .

The present invention also includes a computer control system, the computer control system is electrically connected with all valves through relays, and is electrically connected with the first pressure sensor 21 and the second pressure sensor 22, the computer control system collects the pressure data of the device through a data acquisition card, And control the opening and closing of the valve through the relay (the prior art, not repeated here).

A method for testing a casing annulus pressure relief tool simulating an experimental device, comprising the following steps:

S1. Assemble the hyperbaric chamber 20 and connect the experimental device;

S2. Fill the water tank 18 with working fluid, close all valves, and place the three-position manual reversing valve 15 in the neutral position; the working fluid can be different fluids such as water and drilling fluid.

S3. Start the hydraulic pump 8, confirm that the third valve 3 and the fourth valve 4 are in the closed state, open the first valve 1, put the three-position manual reversing valve 15 in the right position, and the right cavity of the hydraulic cylinder 16 is filled with oil, so that the The loading cylinder 17 sucks the working fluid that needs to be injected into the pressure relief device 37 from the water tank 18. After the loading cylinder 17 is filled with the working fluid, the first valve 1 is closed to prepare for the pressure relief test;

S4. According to the experimental requirements, carry out the pressure relief test from the inside to the outside or from the outside to the inside.

The steps of the pressure relief test from the inside to the outside are as follows:

S11. Keep all valves closed, then open the third valve 3 and the fourth valve 4, adjust the opening of the manual relief valve 19 to the required relief pressure value, then turn on the power to start the hydraulic pump 8, and set the three-position manual reversing valve 15 is placed in the left position to pressurize, and when the fluid flows out from the manual overflow valve 19, record whether the second pressure sensor 22 meets the required ambient pressure; , manually adjust the opening of the manual relief valve 19 to the desired position, then place the three-position manual reversing valve 15 in the left position, and start to pressurize, when the fluid flows out of the manual relief valve 19, record whether the second pressure sensor 22 Satisfy the required ambient pressure; until the required ambient pressure is met, place the three-position manual reversing valve 15 in the neutral position to relieve pressure;

S12, open the second valve 2 to the sixth valve 6, keep the first valve 1 in a closed state, put the three-position manual reversing valve 15 in the left position, and inject work into the inner cavity and the outer cavity (pressure relief device 37) at the same time When the working fluid flows out from the inner cavity exhaust hole 30 and the outer cavity exhaust hole 31, it can be found at the return line of the water tank 18. At this time, stop the injection into the inner cavity and the outer cavity (pressure relief device 37). liquid;

S13, close the first valve 1, the second valve 2, the sixth valve 6, keep the third valve 3, the fourth valve 4 and the fifth valve 5 open, and place the three-position manual reversing valve 15 in the left position, At the same time, the working fluid is injected into the inner cavity and the outer cavity (pressure relief device 37) to be pressurized. When the pressure reaches the required ambient pressure, the computer control system controls to stop the pressurization. At this time, the third valve 3 is closed to realize the external pressure. Loading of the ambient pressure of the cavity (pressure relief device 37), the pressure of the pressure relief device 37, the pressure of the first pressure sensor 21 and the second pressure sensor 22 are recorded by the computer control system;

S14. After closing the third valve 3, continue to pressurize under the control of the computer control system. When the fluid at the manual overflow valve 19 flows out, the pressure relief test is completed at one time. At this time, the three-position manual reversing valve 15 is placed in the middle Bit pressure relief, the computer control system records the pressure of the pressure relief device 37, the pressure of the first pressure sensor 21 and the second pressure sensor 22;

S15. If the pressure relief test needs to be performed again, repeat steps S14 and S15;

S16. Plot the pressure data of the first pressure sensor 21 and the second pressure sensor 22 into a pressure curve, and determine the actual pressure relief threshold of the device. The pressure relief threshold is the first pressure sensor 21 and the second pressure relief in a stable pressure relief state. The pressure difference between the pressure sensors 22 .

The steps of the pressure relief test from the outside to the inside are as follows:

S21. Close all valves, open the fourth valve and the sixth valve 6, adjust the opening of the manual relief valve 19 to the required relief pressure value, then turn on the power to start the hydraulic pump 8, and set the three-position manual reversing valve 15 to the left When the fluid flows out from the manual overflow valve 19, record whether the second pressure sensor 22 meets the required ambient pressure; if not, place the three-position manual reversing valve 15 in the middle position to release the pressure, and adjust manually The manual relief valve 19 is opened to the required position, and then the three-position manual reversing valve 15 is placed in the left position to start pressurizing. When the fluid at the manual relief valve 19 flows out, record whether the second pressure sensor 22 meets the requirements The required ambient pressure; until the required ambient pressure is met, place the three-position manual reversing valve 15 in the neutral position to relieve pressure;

S22. Keep valve 1 in a closed state, open all other valves, put the three-position manual reversing valve 15 in the left position, and inject working fluid into the inner cavity and outer cavity (pressure relief device 37) at the same time. (pressure relief device 37) When the liquid flows out from the inner cavity exhaust hole 30 and the outer cavity exhaust hole 31, it can be found at the return line of the water tank 18. At this time, stop the flow to the inner cavity and the outer cavity (pressure relief device 37) inject working fluid;

S23, close the first valve 1, the second valve 2, and the third valve 5, keep the third valve 3, the fourth valve 4, and the sixth valve 6 open, and place the three-position manual reversing valve 15 in the left position, At the same time, the working fluid is injected into the inner cavity and the outer cavity (pressure relief device 37) to be pressurized. When the pressure reaches the required ambient pressure, the computer control system controls to stop the pressurization. At this time, the fourth valve 4 is closed to realize the internal pressure. The pressure of the cavity environment is loaded, and the pressure of the pressure relief device 37, the pressure of the first pressure sensor 21 and the second pressure sensor 22 are recorded by the computer control system;

S24. After closing the fourth valve 4, the computer control system controls the continuous pressurization. When the fluid at the manual overflow valve 19 flows out, the pressure relief test is completed at one time. At this time, the three-position manual reversing valve 15 is placed in the middle Bit pressure relief, the computer control system records the pressure of the pressure relief device 37, the pressure of the first pressure sensor 21 and the second pressure sensor 22;

S25. If the pressure relief test needs to be performed again, repeat steps S14 and S15;

S26, draw the pressure data of the first pressure sensor 21 and the second pressure sensor 22 into a pressure curve, and determine the actual pressure relief threshold value of the device, and the pressure relief threshold value is the first pressure sensor 21 and the second pressure sensor in a stable pressure relief state. The pressure difference between the pressure sensors 22 .

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Technical personnel, within the scope of the technical solution of the present invention, can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above, but any content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (6)

1. A simulation experiment device for a casing annulus pressure relief tool is characterized by comprising a hydraulic pump station, a hydraulic system, a water tank (18), a manual overflow valve (19) and a high-pressure cabin (20), wherein the hydraulic pump station is connected with the input end of the hydraulic system through a pipeline, the output end of the hydraulic system is respectively connected with the bottom of the water tank (18) and the lower end of the high-pressure cabin (20) through pipelines, and the upper end of the high-pressure cabin (20) is connected with the upper end of the water tank (18) and the manual overflow valve (19) through pipelines;

the high-pressure cabin (20) comprises an upper clamp (32) and a lower clamp (33) which are provided with inner cavities, an outer shell (36) and a pressure relief device (37), wherein the pressure relief device (37) is wrapped on the outer sides of the upper clamp (32) and the lower clamp (33) which are oppositely arranged, and the pressure relief device (37), the upper clamp (32) and the lower clamp (33) are all arranged in the outer shell (36);

the upper clamp (32) and the lower clamp (33) are respectively provided with an inner cavity exhaust hole (30) and an inner cavity liquid injection hole (38);

the upper clamp (32) is provided with an outer cavity exhaust hole (31), and the lower clamp (33) is provided with an outer cavity liquid injection hole (39);

the hydraulic system comprises a hydraulic cylinder (16) and a loading cylinder (17);

one end of the inner cavity exhaust hole (30) is communicated with the inner cavity, and the other end of the inner cavity exhaust hole is connected above the water tank (18);

one end of the inner cavity liquid injection hole (38) is communicated with the inner cavity, and the other end of the inner cavity liquid injection hole is connected with the output end of the loading cylinder (17);

the upper clamp (32) is provided with an outer cavity exhaust hole (31), and the lower clamp (33) is provided with an outer cavity liquid injection hole (39);

one end of the outer cavity vent hole (31) is communicated with the inside of the pressure relief device (37), and the other end of the outer cavity vent hole is connected with the manual overflow valve (19);

one end of the outer cavity liquid injection hole (39) is communicated with the inside of the pressure relief device (37), and the other end of the outer cavity liquid injection hole is connected with the loading cylinder (17);

a first pressure sensor (21) is arranged on a pipeline connecting the loading cylinder (17) and the inner cavity liquid injection hole (38), and a second pressure sensor (22) is arranged on a pipeline between the outer cavity exhaust hole (31) and the manual overflow valve (19).

2. The casing annulus pressure relief tool simulation experiment device according to claim 1, wherein the hydraulic pump station comprises a three-position manual reversing valve (15), a high-pressure filter (13), a hydraulic pump (8) and an oil absorption filter (10) which are sequentially connected through a pipeline, a motor (7) is arranged on the hydraulic pump (8), the three-position manual reversing valve (15), a proportional overflow valve (14) and a safety valve (23) are arranged between the high-pressure filter (13), and an oil return filter (11) is arranged at the lower ends of the proportional overflow valve (14) and the safety valve (23).

3. The casing annulus pressure relief tool simulation experiment device according to claim 2, wherein the hydraulic pump station further comprises a hydraulic oil tank (9), and the oil suction filter (10) and the oil return filter (11) are both arranged in the hydraulic oil tank (9);

and a liquid level thermometer (12) is arranged in the hydraulic oil tank (9).

4. A casing annulus pressure relief tool simulation experiment device according to claim 1, wherein a stop ring (34) is provided on the outer housing (36).

5. The casing annulus pressure relief tool simulation experiment device according to claim 3, wherein sealing rings (35) are arranged between the upper clamp (32) and the outer shell (36), between the lower clamp (33) and the outer shell (36), between the pressure relief device (37) and the upper clamp (32), and between the pressure relief device (37) and the lower clamp (33).

6. A testing method of a casing annulus pressure relief tool simulation experiment device, which is used for the casing annulus pressure relief tool simulation experiment device according to any one of claims 1 to 5, and is characterized by comprising the following steps:

s1, assembling the high-pressure cabin (20) and connecting the experimental device;

s2, filling the water tank (18) with working fluid, closing all valves, and placing the three-position manual reversing valve (15) in a middle position;

s3, starting a hydraulic pump (8), opening a first valve (1), placing a three-position manual reversing valve (15) at the right position, feeding oil into a right cavity of a hydraulic cylinder (16), enabling a loading cylinder (17) to suck working fluid needing to be injected into a pressure relief device (37) from a water tank (18), and closing the first valve (1) after the loading cylinder (17) is filled with the working fluid for carrying out a pressure relief test;

and S4, carrying out inside-out pressure relief or outside-in pressure relief tests according to experimental requirements.

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