Injection-production packer testing equipment for air energy storage well

Abstract

The utility model belongs to the technical field of packer testing equipment, and particularly relates to injection-production packer testing equipment for an air energy storage well, which comprises a testing sleeve, a pressure testing plug is arranged at one end of the testing sleeve, a front cavity and a rear cavity are arranged in the testing sleeve, the pressure testing plug is arranged in the front cavity, and the rear cavity is arranged in the rear cavity. A first sealing rubber ring belt is arranged in the front cavity, a second sealing rubber ring belt is arranged in the rear cavity, a packer is placed in the test sleeve, limiting mechanisms are arranged in the front cavity and the rear cavity, and the first sealing rubber ring belt and the second sealing rubber ring belt are arranged between the two limiting mechanisms. When the packer is placed, the lower connector and the stress connector are limited through the two limiting mechanisms, the overall annular size of the limiting mechanisms is changed, then adjustment and change are correspondingly carried out according to the size of the packer, and the lower connector and the stress connector can be well attached to the outer surface of the packer.

Description

Technical Field

[0001] The utility model belongs to the technical field of packer testing equipment, and particularly relates to a testing equipment for injection-production packers used in air energy storage wells. Background Art

[0002] Air energy storage is a technology that converts electrical energy into air pressure energy and stores it, and then releases it and converts it back into electrical energy when needed. Air energy storage requires the use of air energy storage wells. Packers are important structural devices in air energy storage wells. A packer is a downhole tool connected to the downhole string and used to seal the annular space between the pipe and the gas well casing or open-hole wellbore.

[0003] Chinese Patent (Publication No. CN117433916B) discloses a testing device for injection-production packers used in air energy storage wells, which includes an upper shaft, an end cap, a cylinder liner, a piston, a lower shaft, an isolation ring, a stress joint, a testing sleeve, and a quick-connect isolation ring. Pressure is injected into the second sealing area through the lower hydraulic hole, and the piston moves towards the end cap to transfer the pressure to the packer to be tested through the lower shaft and the stress joint.

[0004] It can be seen from the prior art that the existing equipment for testing packers cannot adapt to packers of different sizes. One testing device can only adapt to one size of packer, and the testing cost of packers is relatively high. Therefore, it is difficult to adapt when testing packers of multiple sizes. Summary of the Utility Model

[0005] The utility model is proposed to solve the technical problem in the background art that the existing equipment for testing packers cannot adapt to packers of different sizes, one testing device can only adapt to one size of packer, the testing cost of packers is relatively high, and it is difficult to adapt when testing packers of multiple sizes, and a testing equipment for injection-production packers used in air energy storage wells is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A testing equipment for injection-production packers used in air energy storage wells includes a testing sleeve. One end of the testing sleeve is provided with a pressure testing plug. The testing sleeve is internally provided with a front cavity and a rear cavity. The pressure testing plug is installed in the front cavity. A first sealing rubber ring belt is arranged in the front cavity. A second sealing rubber ring belt is arranged in the rear cavity. The testing sleeve is used for placing a packer. Limiting mechanisms are arranged in both the front cavity and the rear cavity. The first sealing rubber ring belt and the second sealing rubber ring belt are arranged between the two limiting mechanisms. One end of the second sealing rubber ring belt is arranged within the range of the limiting mechanism in the front cavity.

[0008] A swivel ring for adjusting two limiting mechanisms is rotatably mounted on the surface of the test sleeve. An external thread sleeve is provided on one side of the swivel ring. An internal thread sleeve is threadedly sleeved on the external thread sleeve. A stop block for cooperating with the internal thread sleeve is also fixedly mounted on the test sleeve.

[0009] Preferably, the limiting mechanism includes a plurality of second arc-shaped sliders and a plurality of first arc-shaped sliders that are alternately slidably connected together. A chute is provided on the second arc-shaped slider. The first arc-shaped slider slides along the chute. A spring is connected between two adjacent first arc-shaped sliders. The spring is arranged within the range of the chute. Threaded shafts are fixedly mounted on the surfaces of two second arc-shaped sliders that face each other. Gears are threadedly sleeved on both threaded shafts. One side of the swivel ring meshes with the gears.

[0010] Preferably, the threaded shaft passes through the test sleeve. The gear is rotatably mounted on the surface of the test sleeve. One side of a swivel ring meshes with two gears.

[0011] Preferably, sliders are provided at both ends of each first arc-shaped slider. The sliders slide along the surface of the second arc-shaped slider. The inner surfaces of the second arc-shaped slider and the first arc-shaped slider are on the same circle.

[0012] Preferably, the stop block is fixedly connected to the surface of the test sleeve through a fixed shaft. One ends of the two internal thread sleeves respectively abut against the surfaces of the two stop blocks. The stop block is arranged outside the external thread sleeve and is located between the swivel ring and the internal thread sleeve.

[0013] Preferably, the pressure test plug is fixedly connected to the front cavity of the test sleeve through screws.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: When placing the packer, the lower joint and the stress joint are limited by two limiting mechanisms. As the two threaded shafts approach each other, the second arc-shaped sliders approaching each other will compress the spring, forcing the first arc-shaped sliders to also approach each other, thereby changing the overall ring size of the limiting mechanism, and then adjusting and changing accordingly according to the size of the packer, and being able to fit well with the outer surface of the packer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a test device for an air storage well injection-production packer proposed by the present utility model;

[0016] Figure 2 is a schematic internal structural diagram of a test device for an air storage well injection-production packer proposed by the present utility model;

[0017] Figure 3 is a schematic structural diagram of one side of the limiting mechanism;

[0018] Figure 4 It is a schematic structural diagram of the other side of the limiting mechanism.

[0019] In the figure: 1. Test sleeve; 2. Pressure test plug; 3. Internal thread sleeve; 4. Block; 5. Gear; 6. Threaded shaft; 7. Swivel ring; 8. External thread sleeve; 9. Fixed shaft; 10. Limiting mechanism; 11. First sealing rubber ring belt; 12. Second sealing rubber ring belt; 13. First arc-shaped slider; 14. Spring; 15. Slider; 16. Second arc-shaped slider; 17. Chute. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] Refer to Figures 1 - 4 , a test device for an injection-production packer of an air energy storage well, including a test sleeve 1. One end of the test sleeve 1 is provided with a pressure test plug 2. The test sleeve 1 is provided with a front cavity and a rear cavity. The pressure test plug 2 is installed in the front cavity. A first sealing rubber ring belt 11 is arranged in the front cavity, and a second sealing rubber ring belt 12 is arranged in the rear cavity. The test sleeve 1 is used to place the packer. Limiting mechanisms 10 are arranged in both the front cavity and the rear cavity. The first sealing rubber ring belt 11 and the second sealing rubber ring belt 12 are arranged between the two limiting mechanisms 10. One end of the second sealing rubber ring belt 12 is arranged within the range of the limiting mechanism 10 in the front cavity;

[0023] A swivel ring 7 for adjusting the two limiting mechanisms 10 is rotatably installed on the surface of the test sleeve 1. An external thread sleeve 8 is arranged on one side of the swivel ring 7. An internal thread sleeve 3 is threadedly sleeved on the external thread sleeve 8. A block 4 cooperating with the internal thread sleeve 3 is also fixedly installed on the test sleeve 1.

[0024] The limiting mechanism 10 includes a plurality of second arc-shaped sliders 16 and a plurality of first arc-shaped sliders 13 that are alternately slidably connected together. A chute 17 is provided on the second arc-shaped slider 16, and the first arc-shaped slider 13 slides along the chute 17. A spring 14 is connected between two adjacent first arc-shaped sliders 13, and the spring 14 is arranged within the range of the chute 17. Threaded shafts 6 are fixedly installed on the surfaces of two second arc-shaped sliders 16 that face each other. Gears 5 are threadedly sleeved on both threaded shafts 6, and one side of the rotating ring 7 meshes with the gears 5. When it is necessary to adjust the size of the limiting mechanism 10 to adapt to packers of different sizes, the size of the limiting mechanism 10 is adjusted by adjusting the distance between the two threaded shafts 6. When the two second arc-shaped sliders 16 facing each other approach each other, the size of the overall limiting mechanism 10 becomes smaller. On the contrary, when the two second arc-shaped sliders 16 move away from each other, the size of the overall limiting mechanism 10 becomes larger. By rotating the rotating ring 7 to rotate the gears 5, the relative positions of the threaded shafts 6 are changed by the gears 5.

[0025] The threaded shaft 6 passes through the test sleeve 1, and the gear 5 is rotatably installed on the surface of the test sleeve 1. One side of a rotating ring 7 meshes with two gears 5. By rotating the rotating ring 7, the two meshing gears 5 can be rotated. The gear 5 is rotatably installed on the surface of the test sleeve 1. When the gear 5 rotates, the relative position of the gear 5 with respect to the threaded shaft 6 can be changed. By reasonably setting the thread rotation direction of the threaded shaft 6, the two threaded shafts 6 can be made to approach or move away from each other.

[0026] Sliders 15 are provided at both ends of each first arc-shaped slider 13, and the sliders 15 slide along the surface of the second arc-shaped slider 16. The inner surfaces of the second arc-shaped slider 16 and the first arc-shaped slider 13 are on the same circle. The sliders 15 play a role in limiting, enabling the first arc-shaped slider 13 to slide within the range of the second arc-shaped slider 16. The rubber layer has an anti-slip effect. By setting the inner surfaces on the same circle, a good connection effect can be maintained when expanding and contracting.

[0027] The stop block 4 is fixedly connected to the surface of the test sleeve 1 through a fixed shaft 9. One ends of two internal threaded sleeves 3 respectively abut against the surfaces of the two stop blocks 4. The stop block 4 is arranged outside the external threaded sleeve 8 and is located between the rotating ring 7 and the internal threaded sleeve 3. By rotating the internal threaded sleeve 3 so that its inner surface is threadedly connected to the external threaded sleeve 8, it can be made to fit and abut against the surface of the stop block 4 as it is continuously rotated, thereby limiting the angle of the rotating ring 7 through the external threaded sleeve 8.

[0028] The pressure test plug 2 is fixedly connected to the front cavity of the test sleeve 1 through screws. It is installed and connected by screws, and the installation method is detachable.

[0029] When testing the packer, place the packer in the test sleeve 1 with the lower joint of the packer facing the pressure test plug 2. During the insertion process, the lower joint of the packer is placed in the front cavity, and the second sealing rubber ring band 12 is sleeved on the outer surface of the lower joint, and the first sealing rubber ring band 11 is sleeved on the outer surface of the stress joint. Both the first sealing rubber ring band 11 and the second sealing rubber ring band 12 are elastic and contract inward, and the inner ring range of the contraction has a directionality. The contracting ends of the first sealing rubber ring band 11 and the second sealing rubber ring band 12 face the same direction. When the joint passes through, under the elastic pressure of the rubber, it can closely fit on the outer surface of the packer. When conducting the sealing test, inject gas between the lower joint and the stress joint to detect the sealing effect of the packer. The specific detection principle is prior art and will not be explained in detail here. The second sealing rubber ring band 12 in the front cavity, under the action of the limiting mechanism 10, closely presses on the surface of the lower joint and maintains good sealing performance. Since the inwardly recessed end of the first sealing rubber ring band 11 faces the second sealing rubber ring band 12, the force of the gas on the first sealing rubber ring band 11 acts on the recessed surface, not at the connection between the first sealing rubber ring band 11 and the stress joint, thus effectively ensuring the sealing effect between the first sealing rubber ring band 11 and the outer surface of the stress joint.

[0030] When placing the packer, the lower joint and the stress joint are limited by two limiting mechanisms 10. By rotating the rotating ring 7 to rotate the gear 5, when the gear 5 arranged on the surface of the test sleeve 1 rotates, it will change the relative position of the threaded shaft 6, so that the two relatively arranged threaded shafts 6 will approach each other. The second arc-shaped slider 16 approaching each other will compress the spring 14 and force the first arc-shaped slider 13 to approach each other as well, thereby changing the overall ring size of the limiting mechanism 10, and then adjusting and changing accordingly according to the size of the packer, and it can fit well on the outer surface of the packer.

[0031] After the size of the limiting mechanism 10 is adjusted appropriately, rotate the internal thread sleeve 3 to thread it on the external thread sleeve 8, and make the internal thread sleeve 3 closely fit with the stop block 4. The angular position of the internal thread sleeve 3 is limited by the stop block 4, and the rotating ring 7 is limited by threading the internal thread sleeve 3 on the external thread sleeve 8, and then the fixing effect on the rotating ring 7 is realized, and finally the size of the limiting mechanism 10 is limited.

[0032] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A test device for an injection-production packer for an air energy storage well, comprising a test sleeve (1), characterized in that: A pressure test plug (2) is provided at one end of the test sleeve (1), a front cavity and a rear cavity are provided in the test sleeve (1), the pressure test plug (2) is installed in the front cavity, a first sealing rubber ring belt (11) is provided in the front cavity, a second sealing rubber ring belt (12) is provided in the rear cavity, a packer is placed in the test sleeve (1), limiting mechanisms (10) are provided in both the front cavity and the rear cavity, the first sealing rubber ring belt (11) and the second sealing rubber ring belt (12) are provided between the two limiting mechanisms (10), and one end of the second sealing rubber ring belt (12) is provided within the range of the limiting mechanism (10) of the front cavity; A swivel ring (7) for adjusting two limiting mechanisms (10) is rotatably mounted on the surface of the test sleeve (1); an external threaded sleeve (8) is provided on one side of the swivel ring (7); an internal threaded sleeve (3) is threadedly sleeved on the external threaded sleeve (8); and a stopper (4) for use with the internal threaded sleeve (3) is also fixedly mounted on the test sleeve (1).

2. The air energy storage well injection and production packer testing device according to claim 1, characterized in that: The limiting mechanism (10) comprises a plurality of second arc-shaped sliders (16) and a plurality of first arc-shaped sliders (13) which are alternately slidably connected together, a slide groove (17) being provided on each of the second arc-shaped sliders (16), the first arc-shaped slider (13) sliding along the slide groove (17), a spring (14) being connected between two adjacent first arc-shaped sliders (13), the spring (14) being arranged within the range of the slide groove (17), threaded shafts (6) being fixedly mounted on the surfaces of two second arc-shaped sliders (16) arranged facing each other, gears (5) being threadedly sleeved on the two threaded shafts (6), and one side of the rotating ring (7) meshing with the gear (5).

3. The air energy storage well injection and production packer testing device according to claim 2, characterized in that: The threaded shaft (6) is arranged to pass through the test sleeve (1), the gear (5) is rotatably mounted on the surface of the test sleeve (1), and one side of a rotating ring (7) is engaged with two gears (5).

4. The air energy storage well injection and production packer testing equipment according to claim 2, characterized in that: Each of the first arc-shaped sliders (13) is provided with sliders (15) at both ends, and the sliders (15) slide along the surface of the second arc-shaped slider (16), and the inner surfaces of the second arc-shaped slider (16) and the first arc-shaped slider (13) are on the same circle.

5. The injection and production packer testing equipment for air energy storage wells according to claim 1, characterized in that: The stopper (4) is fixedly connected to the surface of the test sleeve (1) via a fixed shaft (9); one end of the two internally threaded sleeves (3) respectively abuts against the surfaces of the two stoppers (4); the stoppers (4) are arranged on the outer side of the externally threaded sleeve (8) and are located between the rotating ring (7) and the internally threaded sleeve (3).

6. The air energy storage well injection and production packer testing equipment according to claim 1, characterized in that: The pressure test plug (2) is fixedly connected to the front cavity of the test sleeve (1) via screws.

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