Sealing performance experiment device for packer rubber sleeve

Abstract

The utility model relates to the technical field of oil exploitation, in particular to a packer rubber sleeve sealing performance experimental device. The device comprises a detection cylinder, a top cover plate and a baffle plate, the top cover plate is fixed at the top of the detection cylinder, the baffle plate is slidably connected in the detection cylinder, a pressure adjusting mechanism is assembled between the top cover plate and the baffle plate, and a sealing protection mechanism is assembled at the bottom of the top cover plate; by means of the structural design of the pressure adjusting mechanism, a spiral plunger can move up and down in a threaded hole by rotating a rotary knob, the distance between an adjusting column and a baffle is adjusted through movement of the spiral plunger, and the pressure of a spring can be adjusted; and due to the structural design of the sealing protection mechanism, double-layer protection is achieved through a first protection cover and a second protection cover, sealing between the top cover plate and a matching groove is achieved through a waterproof rubber strip, safety of internal parts can be effectively achieved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of petroleum extraction technology, and in particular to a test device for the sealing performance of packer rubber sleeves. Background Technology

[0002] In oil and gas extraction, packer sleeves are critical components that must provide reliable sealing in complex downhole environments to isolate different pressure zones and prevent fluid cross-contamination. As oil and gas field development progresses into deeper and more complex formations, the requirements for packer sealing performance become increasingly stringent. Traditional packers often experience sealing failures under harsh conditions such as high temperature, high pressure, and high shear, leading to operational interruptions, resource waste, and environmental pollution. To address this challenge, the development of an experimental device that accurately simulates downhole conditions is urgently needed. This device allows for comprehensive multi-factor testing of packer sleeves in a laboratory environment, obtaining sealing performance data. This provides strong support for packer material development and structural optimization, ultimately improving the overall reliability of packers and ensuring safe and efficient oil and gas extraction.

[0003] For example, patent CN215931543U discloses a testing device for the sealing performance of a downhole packer cartridge, including a top cover, a barrel wall, and a barrel bottom. The barrel wall is tightly installed on the upper surface of the barrel bottom, and the top cover is tightly connected to the upper surface of the barrel wall. The barrel bottom is connected to the packer cartridge. It also includes: a rotary valve device installed above the barrel bottom for opening / closing the channel between the barrel bottom and the packer cartridge; and a spring assembly installed inside the barrel wall for providing pressure to the liquid within the rotary valve device. This invention solves the current problem of lacking testing equipment for detecting the sealing performance and pressure resistance of various parts of a downhole packer cartridge.

[0004] When using the above technology, the following technical problems were found in the existing technology: the existing downhole packer rubber sleeve sealing performance test device cannot flexibly adjust the test pressure as needed, and cannot well meet the test requirements. In addition, the existing downhole packer rubber sleeve sealing performance test device is not good enough in terms of sealing protection, and it is easy to cause water ingress and short circuit of internal parts due to poor sealing performance. Therefore, there is room for improvement. To this end, we designed a packer rubber sleeve sealing performance test device to provide another technical solution to the above technical problems. Utility Model Content

[0005] Therefore, it is necessary to provide a packer rubber sleeve sealing performance testing device to address the above-mentioned technical problems, and to solve the technical problems of adjusting the test pressure and providing sealing protection for the parts.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A packer sleeve sealing performance testing device includes a test cylinder, a top cover plate and a baffle. The top cover plate is fixed to the top of the test cylinder, and the baffle is slidably connected inside the test cylinder. A pressure regulating mechanism is assembled between the top cover plate and the baffle, and a sealing protection mechanism is assembled at the bottom of the top cover plate.

[0008] The pressure regulating mechanism includes a threaded hole, a spiral plunger, a knob, an adjusting column, a spring, a limiting bracket, and a first protective cover. The top cover plate has multiple threaded holes inside, and a spiral plunger is threaded into the threaded hole. A knob is fixed to the top of the spiral plunger, and an adjusting column is in contact with the bottom of the spiral plunger. Multiple springs are sleeved on the outside of the adjusting column and between the adjusting column and the baffle. Limiting brackets are fixed to both ends of the baffle, and both limiting brackets are slidably connected to the detection cylinder.

[0009] Preferably, the sealing and protective mechanism includes a first protective cover, a boss, fixing screws, connecting columns, a second protective cover, a mating groove, and a motor mounting bracket. The bottom of the top cover plate is in close contact with the first protective cover. Bosses are fixed to both ends of the outer surface of the first protective cover. Fixing screws are threaded into the inside of the bosses. Both fixing screws are threaded into the top cover plate. Multiple connecting columns are fixed inside the first protective cover. A second protective cover is fixed to one end of each connecting column. A mating groove is provided inside the top cover plate, and the second protective cover and the mating groove are slidably connected.

[0010] Preferably, a motor mounting bracket is fixed to the bottom of the top cover plate, a motor is fixed inside the motor mounting bracket, a worm is fixed to the power output end of the motor, a worm wheel is meshed with the outside of the worm, an output shaft is fixed inside the worm wheel, the top of the output shaft is rotatably connected to the top cover plate, a first sector-shaped baffle is fixed to the bottom of the output shaft, and a second sector-shaped baffle is fixed inside the detection cylinder.

[0011] Preferably, a base plate is fixed to the bottom of the detection cylinder.

[0012] Preferably, the interior of the mating groove is provided with a waterproof adhesive strip.

[0013] Preferably, the top cover plate has a first water guide hole inside, the baffle plate has a second water guide hole corresponding to the first water guide hole inside, and a connecting hose is fixed between the first water guide hole and the second water guide hole.

[0014] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0015] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0016] 1. Through the structural design of the pressure regulating mechanism, this utility model enables the device to move the spiral plunger up and down inside the threaded hole by rotating the knob. The movement of the spiral plunger adjusts the distance between the adjusting column and the baffle, thereby adjusting the spring pressure.

[0017] 2. Through the structural design of the sealing and protection mechanism, this utility model enables the device to achieve double protection through the first and second protective covers, and to achieve a seal between the top cover plate and the mating groove through the waterproof adhesive strip, which can effectively ensure the safety of internal components and improve service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the detection cylinder and top cover plate of this utility model;

[0021] Figure 3 This utility model Figure 2 A partially enlarged structural diagram;

[0022] Figure 4 This is a schematic diagram of the connection structure of the top cover plate, the first protective cover and the second protective cover of this utility model;

[0023] Figure 5 This utility model Figure 4 A partially enlarged structural diagram;

[0024] Figure 6 This is a schematic diagram of the connection structure of the detection cylinder, top cover plate and connecting hose of this utility model.

[0025] In the diagram: 1. Detection cylinder; 2. Top cover plate; 3. Baffle; 4. Threaded hole; 5. Spiral plunger; 6. Knob; 7. Adjusting column; 8. Spring; 9. Limiting platform; 10. First protective cover; 11. Boss; 12. Fixing screw; 13. Connecting column; 14. Second protective cover; 15. Mating groove; 16. Motor mounting bracket; 17. Motor; 18. Worm gear; 19. Worm wheel; 20. Output shaft; 21. First sector-shaped water baffle; 22. Second sector-shaped water baffle; 23. Base plate; 24. First water guide hole; 25. Second water guide hole; 26. Connecting hose; 27. Waterproof rubber strip. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] Example 1

[0031] Reference Figure 1 - Figure 6 A packer sleeve sealing performance test device includes a test cylinder 1, a top cover plate 2 and a baffle 3. The top cover plate 2 is fixed to the top of the test cylinder 1, and the baffle 3 is slidably connected inside the test cylinder 1. A pressure regulating mechanism is assembled between the top cover plate 2 and the baffle 3, and a sealing protection mechanism is assembled at the bottom of the top cover plate 2.

[0032] The pressure regulating mechanism includes threaded holes 4, a spiral plunger 5, a knob 6, an adjusting column 7, springs 8, limit mounting platforms 9, and a first protective cover 10. Multiple threaded holes 4 are opened inside the top cover plate 2. A spiral plunger 5 is threadedly connected inside the threaded holes 4. A knob 6 is fixed to the top of the spiral plunger 5. The adjusting column 7 is in contact with the bottom of the spiral plunger 5. Multiple springs 8 are sleeved on the outside of the adjusting column 7 and between the adjusting column 7 and the baffle 3. Limit mounting platforms 9 are fixed to both ends of the baffle 3. Both limit mounting platforms 9 are connected to the detection cylinder 1. Sliding connection; When adjusting the test pressure of the packer sleeve sealing performance test device, turn knob 6. Knob 6 drives the spiral plunger 5 to move inside the threaded hole 4. The bottom of the spiral plunger 5 abuts against the top of the adjusting column 7. The adjusting column 7 slides inside the threaded hole 4. By rotating knob 6, the distance between the adjusting column 7 and the baffle 3 can be adjusted. By adjusting the distance, the pressure of the spring 8 can be adjusted, and the test pressure of the packer sleeve sealing performance test device can be adjusted.

[0033] A motor mounting bracket 16 is fixed to the bottom of the top cover plate 2. A motor 17 is fixed inside the motor mounting bracket 16. A worm gear 18 is fixed to the power output end of the motor 17. A worm wheel 19 is meshed with the outside of the worm gear 18. An output shaft 20 is fixed inside the worm wheel 19. The top of the output shaft 20 is rotatably connected to the top cover plate 2. A first sector-shaped baffle 21 is fixed to the bottom of the output shaft 20. A second sector-shaped baffle 22 is fixed inside the test cylinder 1. A bottom plate 23 is fixed to the bottom of the test cylinder 1. When a sealing performance test is to be conducted on the packer cartridge, the test liquid flows from the first water guide hole 24 through the connecting hose 26 and flows from the second water guide hole 25 into the space between the baffle 3 and the first sector-shaped baffle 21. At this time, the first sector-shaped baffle... With the baffle 21 and the second sector baffle 22 in the closed state, as the experimental liquid continues to be injected, the baffle 3 will move upward and compress the spring 8. At this time, the top baffle 3 and the first sector baffle 21 are under high pressure. The motor 17 is started, and the power output end of the motor 17 drives the worm 18 to rotate. The worm 18 drives the worm wheel 19 to rotate, and the worm wheel 19 drives the output shaft 20 to rotate. The output shaft 20 drives the first sector baffle 21 to rotate inside the test cylinder 1. In this way, the experimental liquid flows out from the sector gap between the first sector baffle 21 and the second sector baffle 22, flows out through the hole inside the bottom plate 23, and enters the packer rubber sleeve. In this way, the sealing and pressure resistance of different parts of the packer rubber sleeve can be tested.

[0034] The top cover plate 2 has a first water guide hole 24 inside, and the baffle 3 has a second water guide hole 25 corresponding to the first water guide hole 24 inside. A connecting hose 26 is fixed between the first water guide hole 24 and the second water guide hole 25. By setting the connecting hose 26, the experimental liquid can be effectively prevented from flowing into the space between the top cover plate 2 and the baffle 3, affecting the performance of the spring 8. At the same time, it can also prevent the liquid from flowing into the interior of the second protective cover 14 and damaging the internal working parts.

[0035] Example 2

[0036] Reference Figure 4A sealing performance testing device for a packer cartridge includes a sealing protection mechanism comprising a first protective cover 10, a boss 11, fixing screws 12, connecting posts 13, a second protective cover 14, a mating groove 15, and a motor mounting bracket 16. The bottom of a top cover 2 is in close contact with the first protective cover 10. Both ends of the outer surface of the first protective cover 10 are fixed with bosses 11, and the internal threads of the bosses 11 are threaded with fixing screws 12. Both fixing screws 12 are threadedly connected to the top cover 2. Multiple connecting posts 13 are fixed inside the first protective cover 10, and a second protective cover 14 is fixed to one end of each connecting post 13. A mating groove 15 is provided inside the top cover 2. The second protective cover 14 and... The mating groove 15 is slidably connected; a waterproof rubber strip 27 is provided inside the mating groove 15; when the sealing performance test device for the packer is to be sealed and the internal components are to be protected, the first protective cover 10 is placed at the bottom of the top cover plate 2 and fixed by two fixing screws 12 inside the boss 11 respectively threaded to the bottom of the top cover plate 2. A waterproof rubber strip 27 is provided between the second protective cover 14 and the mating groove 15. The mating groove 15 squeezes the waterproof rubber strip 27, and the waterproof rubber strip 27 deforms under force to achieve a sealing effect. With the double protection of the first protective cover 10 and the second protective cover 14, the safety of the internal components can be effectively achieved and the service life can be improved.

[0037] The following is the usage process of the packer rubber sleeve sealing performance testing device provided by this utility model:

[0038] When the sealing performance test device for packer rubber sleeves is to be installed and the internal components are to be protected, the bottom of the top cover plate 2 is in contact with the first protective cover 10. Both ends of the first protective cover 10 are fixed with bosses 11, and the internal threads of the bosses 11 are connected with fixing screws 12. Both fixing screws 12 are threaded to the top cover plate 2. Multiple connecting posts 13 are fixed inside the first protective cover 10, and a second protective cover 14 is fixed to one end of each connecting post 13. The top cover plate 2 has a mating groove 15 inside, and the second protective cover 14 is slidably connected to the mating groove 15. Then, the first protective cover 10 is placed at the bottom of the top cover plate 2 and fixed by the two fixing screws 12 inside the bosses 11 respectively threaded to the bottom of the top cover plate 2. A waterproof rubber strip 27 is set between the second protective cover 14 and the mating groove 15. The mating groove 15 squeezes the waterproof rubber strip 27, and the waterproof rubber strip 27 deforms under force to achieve a sealing effect. With the double protection of the first protective cover 10 and the second protective cover 14, the safety of the internal components can be effectively achieved and the service life can be improved.

[0039] When adjusting the test pressure of the packer sleeve sealing performance test device, multiple threaded holes 4 are provided inside the top cover plate 2. A spiral plunger 5 is threaded inside the threaded hole 4. A knob 6 is fixed to the top of the spiral plunger 5. An adjusting column 7 is in contact with the bottom of the spiral plunger 5. Multiple springs 8 are sleeved on the outside of the adjusting column 7 and between the adjusting column 7 and the baffle 3. Limiting brackets 9 are fixed to both ends of the baffle 3. Both limiting brackets 9 are slidably connected to the test cylinder 1. Then, the knob 6 is rotated. The knob 6 drives the spiral plunger 5 to move inside the threaded hole 4. The bottom of the spiral plunger 5 abuts against the top of the adjusting column 7. The adjusting column 7 slides inside the threaded hole 4. By rotating the knob 6, the distance between the adjusting column 7 and the baffle 3 can be adjusted. By adjusting the distance, the pressure of the spring 8 can be adjusted, and the test pressure of the packer sleeve sealing performance test device can be adjusted.

[0040] When adjusting the test pressure of the packer sleeve sealing performance test device, multiple threaded holes 4 are provided inside the top cover plate 2. A spiral plunger 5 is threaded inside the threaded hole 4. A knob 6 is fixed to the top of the spiral plunger 5. An adjusting column 7 is in contact with the bottom of the spiral plunger 5. Multiple springs 8 are sleeved on the outside of the adjusting column 7 and between the adjusting column 7 and the baffle 3. Limiting brackets 9 are fixed to both ends of the baffle 3. Both limiting brackets 9 are slidably connected to the test cylinder 1. Then, the knob 6 is rotated. The knob 6 drives the spiral plunger 5 to move inside the threaded hole 4. The bottom of the spiral plunger 5 abuts against the top of the adjusting column 7. The adjusting column 7 slides inside the threaded hole 4. By rotating the knob 6, the distance between the adjusting column 7 and the baffle 3 can be adjusted. By adjusting the distance, the pressure of the spring 8 can be adjusted, and the test pressure of the packer sleeve sealing performance test device can be adjusted.

[0041] When conducting a sealing performance test on the packer cartridge, a motor mounting bracket 16 is fixed to the bottom of the top cover plate 2, and a motor 17 is fixed inside the motor mounting bracket 16. A worm gear 18 is fixed to the power output end of the motor 17, and a worm wheel 19 is meshed with the outside of the worm gear 18. An output shaft 20 is fixed inside the worm wheel 19, and the top of the output shaft 20 is rotatably connected to the top cover plate 2. A first sector-shaped baffle 21 is fixed to the bottom of the output shaft 20, and a second sector-shaped baffle 22 is fixed inside the test cylinder 1. The test liquid flows from the first water guide hole 24 through the connecting hose 26 and flows from the second water guide hole 25 into the space between the baffle 3 and the first sector-shaped baffle 21. At this time, the first sector-shaped baffle 21 and the second sector-shaped baffle 22 are connected to the top cover plate 2. With the second sector-shaped baffle 22 in the closed state, as the experimental liquid continues to be injected, the baffle 3 will move upward and compress the spring 8. At this time, the top baffle 3 and the first sector-shaped baffle 21 are under high pressure. The motor 17 is started, and the power output end of the motor 17 drives the worm gear 18 to rotate. The worm gear 18 drives the worm wheel 19 to rotate, and the worm wheel 19 drives the output shaft 20 to rotate. The output shaft 20 drives the first sector-shaped baffle 21 to rotate inside the test cylinder 1. In this way, the experimental liquid flows out from the sector-shaped gap between the first sector-shaped baffle 21 and the second sector-shaped baffle 22, flows out through the hole inside the bottom plate 23, and enters the packer rubber sleeve. In this way, the sealing and pressure resistance of different parts of the packer rubber sleeve can be tested.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A test apparatus for the sealing performance of a packer rubber sleeve, characterized in that, The device includes a detection cylinder (1), a top cover plate (2) and a baffle (3). The top cover plate (2) is fixed to the top of the detection cylinder (1). The baffle (3) is slidably connected inside the detection cylinder (1). A pressure regulating mechanism is assembled between the top cover plate (2) and the baffle (3). A sealing and protective mechanism is assembled at the bottom of the top cover plate (2). The pressure regulating mechanism includes a threaded hole (4), a spiral plunger (5), a knob (6), an adjusting column (7), a spring (8), a limiting bracket (9), and a first protective cover (10). The top cover plate (2) has multiple threaded holes (4) inside. The spiral plunger (5) is threadedly connected inside the threaded hole (4). The knob (6) is fixed to the top of the spiral plunger (5). The adjusting column (7) is in close contact with the bottom of the spiral plunger (5). Multiple springs (8) are sleeved on the outside of the adjusting column (7) and between the adjusting column (7) and the baffle (3). The limiting brackets (9) are fixed at both ends of the baffle (3). Both limiting brackets (9) are slidably connected to the detection cylinder (1).

2. The packer rubber sleeve sealing performance test device according to claim 1, characterized in that, The sealing and protective mechanism includes a first protective cover (10), a boss (11), a fixing screw (12), a connecting column (13), a second protective cover (14), a mating groove (15), and a motor mounting bracket (16). The bottom of the top cover plate (2) is in close contact with the first protective cover (10). Both ends of the first protective cover (10) are fixed with bosses (11). The inside of the bosses (11) is threaded with fixing screws (12). Both fixing screws (12) are threadedly connected to the top cover plate (2). The inside of the first protective cover (10) is fixed with multiple connecting columns (13). One end of each of the multiple connecting columns (13) is fixed with a second protective cover (14). The inside of the top cover plate (2) is provided with a mating groove (15). The second protective cover (14) and the mating groove (15) are slidably connected.

3. The packer rubber sleeve sealing performance test device according to claim 1, characterized in that, A motor mounting bracket (16) is fixed to the bottom of the top cover plate (2). A motor (17) is fixed inside the motor mounting bracket (16). A worm gear (18) is fixed to the power output end of the motor (17). A worm wheel (19) is meshed with the outside of the worm gear (18). An output shaft (20) is fixed inside the worm wheel (19). The top of the output shaft (20) is rotatably connected to the top cover plate (2). A first sector-shaped baffle plate (21) is fixed to the bottom of the output shaft (20). A second sector-shaped baffle plate (22) is fixed inside the detection cylinder (1).

4. The packer rubber sleeve sealing performance test device according to claim 1, characterized in that, The bottom of the detection cylinder (1) is fixed with a base plate (23).

5. The packer sleeve sealing performance test device according to claim 2, characterized in that, The interior of the mating groove (15) is provided with a waterproof adhesive strip (27).

6. The packer rubber sleeve sealing performance test device according to claim 1, characterized in that, The top cover plate (2) has a first water guide hole (24) inside, and the baffle (3) has a second water guide hole (25) corresponding to the first water guide hole (24) inside. A connecting hose (26) is fixed between the first water guide hole (24) and the second water guide hole (25).

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