Rupture disc plugging tool

Abstract

The utility model relates to the technical field of tubing operation, and discloses a rupture disk plugging tool which comprises an outer cylinder, an inner cavity is formed in the top end of the interior of the outer cylinder, a motor is fixedly connected to the left end of the inner side of the inner cavity, and the output end of the motor is fixedly connected with a two-way threaded rod. The left side and the right side of the outer wall of the bidirectional threaded rod are both in threaded connection with sliding blocks, the front sides of the two sliding blocks are both fixedly connected with racks, the left side and the right side of the inner bottom end of the inner cavity are both rotationally connected with rotating rods, the top ends of the two rotating rods are both fixedly connected with gears, and the two gears are in engaged connection with the corresponding racks. According to the device, the sliding blocks on the two sides drive the racks to move, due to the fact that the gears are meshed with the racks, the gears on the two sides can drive the two rotating rods to rotate, at the moment, the breaking pieces on the two sides rotate, the outer cylinder can be sealed, and the two ends of the outer cylinder can be sealed through the two breaking pieces.

Description

Technical Field

[0001] This utility model relates to the field of cementing technology, and in particular to a ruptured disc plugging tool. Background Technology

[0002] In cementing operations, there are situations where it is necessary to temporarily seal the tubing string. The conventional technique used is to use sealing tools such as bridge plugs for sealing.

[0003] A search revealed Chinese Patent Publication No. CN118933659A, which discloses a temporary plugging tool for the main wellbore in casing branch well completion, relating to the field of cementing technology. It includes a connector, a fracture disc connector, and a lower connector connected in sequence. A striking pin is installed within the connector and fracture disc connector, with its upper part connected to the connector via a shear pin, and its lower end forming a sharp point. A fracture disc is installed within the lower connector, with a distance between the sharp point of the striking pin and the fracture disc. However, in oilfield development, this fracture disc plugging tool often requires high-pressure fluid injection on both sides. During use, this device is inconvenient for sealing with dual high-pressure fluids, and the increased pressure on one side can easily damage the bridge plug, leading to a blowout, reducing the device's safety and failing to meet user needs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a ruptured disc plugging tool, which aims to improve the problem that existing plugging tools suitable for high-pressure well operations are inconvenient to pressurize the fluids on both sides during use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rupture disc sealing tool, comprising an outer cylinder, an inner cavity formed at the top of the inner cylinder, a motor fixedly connected to the left inner end of the inner cavity, a bidirectional threaded rod fixedly connected to the output end of the motor, sliders threadedly connected to the left and right sides of the outer wall of the bidirectional threaded rod, racks fixedly connected to the front sides of the two sliders, rotating rods rotatably connected to the left and right sides of the bottom of the inner cavity, gears fixedly connected to the top ends of the two rotating rods, the two gears meshing with the corresponding racks, the bottom ends of the two rotating rods penetrating the outer cylinder and fixedly connected to a rupture disc, and a fixing mechanism provided on the left and right sides of the outer cylinder, the fixing mechanism being used to facilitate the fixing of the device.

[0006] With the above technical solution, the motor start-up will eventually drive the two rupture discs on both sides to rotate, which can seal the outer cylinder. Moreover, the two rupture discs can seal both ends of the outer cylinder, which improves the safety of the device and can meet the needs of users.

[0007] As a further description of the above technical solution:

[0008] The fixing mechanism includes a connector, two connectors are slidably connected to the left and right ends of the inner cavity of the outer cylinder respectively, and the outer walls of the two connectors are provided with inclined surfaces on adjacent sides. Multiple mounting slots are provided at equal intervals around the left and right ends of the outer cavity. Rotating columns are rotatably connected inside the multiple mounting slots. Connecting blocks are fixedly connected to the outer sides of the multiple rotating columns. A locking plate is fixedly connected to one side of the multiple connecting blocks.

[0009] Through the above technical solution, the movement of the joint can push multiple slips to expand outward. The expansion of multiple slips to the outside will make them fit tightly against the well wall of the oil and gas well, thus firmly fixing the device and preventing it from moving during the sealing process, thereby improving the practicality of the device.

[0010] As a further description of the above technical solution:

[0011] The inner bottom of the cavity is provided with sliding grooves on both the left and right sides, and the interior of each of the two sliding grooves is slidably connected to the corresponding slider.

[0012] Through the above technical solution, the slide can limit the movement of the slider, so that the slider can move when the bidirectional threaded rod rotates.

[0013] As a further description of the above technical solution:

[0014] Limiting blocks are fixedly connected to the front and rear sides of both joints, and limiting grooves are opened on the front and rear sides of the left and right ends of the outer cylinder. The interior of the multiple limiting grooves is slidably connected to the corresponding limiting blocks.

[0015] Through the above technical solution, the limiting groove can limit the limiting block, so that the joint can only slide.

[0016] As a further description of the above technical solution:

[0017] Each of the multiple limiting grooves has a spring fixedly connected to one end, and one end of each of the multiple springs is fixedly connected to a corresponding limiting block.

[0018] Through the above technical solution, the spring can push the limiting block, so that the joint will not move to one side of the outer cylinder when it is not subjected to external force.

[0019] As a further description of the above technical solution:

[0020] The inner dimensions of the outer cylinder match the size of the rupture disc, and the inner dimensions of the outer cylinder match the size of the connector.

[0021] The above technical solution enables the crushing disc to seal the inside of the outer cylinder tightly and ensures that there are no gaps between the joint and the outer cylinder.

[0022] As a further description of the above technical solution:

[0023] The right end of the outer wall of the connector on the right side is provided with a mating interface, and the right end of the mating interface is provided with a second thread.

[0024] Through the above technical solution, the second thread can be used to install the device, making it convenient to send the device into the oil and gas well.

[0025] As a further description of the above technical solution:

[0026] The left end of the connector on the left side is provided with a first thread, and the internal size of the limiting groove matches the size of the limiting block.

[0027] Through the above technical solution, the first thread can easily install auxiliary equipment on the front side of the device, which facilitates the injection pressure work of oil and gas wells. The internal size of the limiting groove matches the size of the limiting block, so that the joint will not shake.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the motor drives the bidirectional threaded rod to rotate, and the sliders on both sides drive the rack to move accordingly. Since the gears mesh with the rack, the gears on both sides will drive the two rotating rods to rotate. At this time, the rupture discs on both sides rotate, which can seal the outer cylinder. Moreover, the two rupture discs can seal both sides of the outer cylinder, which improves the safety of the device and can meet the needs of users.

[0030] 2. In this utility model, the joint will move towards the outer cylinder when squeezed. Since the slips are connected to the slot on the outside of the outer cylinder through the rotating column, when the joint moves, the inclined surface can push multiple slips to expand outward. The expansion of multiple slips outward will fit tightly against the well wall of the oil and gas well, thus firmly fixing the device and preventing it from moving during the sealing process, thereby improving the practicality of the device. Attached Figure Description

[0031] Figure 1 This is a perspective view of a rupture disc sealing tool proposed in this utility model;

[0032] Figure 2 This is a cross-sectional view of the outer cylinder structure of a rupture disc sealing tool proposed in this utility model;

[0033] Figure 3 This is a partial structural cross-sectional view of a rupture disc sealing tool proposed in this utility model;

[0034] Figure 4This is a partial structural exploded view of a rupture disc sealing tool proposed in this utility model;

[0035] Figure 5 This is a structural cross-sectional view of the fixing mechanism of a rupture disc sealing tool proposed in this utility model.

[0036] Legend:

[0037] 1. Outer cylinder; 2. Fixing mechanism; 201. Connector; 202. Inclined surface; 203. Mounting groove; 204. Rotating column; 205. Connecting block; 206. Slip plate; 3. Inner cavity; 4. Motor; 5. Bidirectional threaded rod; 6. Slider; 7. Rack; 8. Rotating rod; 9. Gear; 10. Fracture disc; 11. Slide groove; 12. Limiting groove; 13. Limiting block; 14. Spring; 15. First thread; 16. Connecting interface; 17. Second thread. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a rupture disc sealing tool, including an outer cylinder 1, an inner cavity 3 at the top of the inner cylinder 1, a motor 4 fixedly connected to the left inner side of the inner cavity 3, a bidirectional threaded rod 5 fixedly connected to the output end of the motor 4, sliders 6 threadedly connected to the left and right sides of the outer wall of the bidirectional threaded rod 5, racks 7 fixedly connected to the front sides of the two sliders 6, rotating rods 8 rotatably connected to the left and right sides of the bottom of the inner cavity 3, gears 9 fixedly connected to the top of the two rotating rods 8, the two gears 9 respectively meshing with the corresponding racks 7, the bottom ends of the two rotating rods 8 penetrating the outer cylinder 1 and fixedly connected to a rupture disc 10, a fixing mechanism 2 provided on the left and right sides of the outer cylinder 1, the fixing mechanism 2 is used to facilitate the fixing of the device, the inner size of the outer cylinder 1 matches the size of the rupture disc 10, and the inner size of the outer cylinder 1 matches the size of the connector 201;

[0040] Specifically, when using this device, it is first installed inside the wellbore of an oil and gas well. When sealing work is required, the motor 4 is started first. The motor 4 drives the bidirectional threaded rod 5 to rotate. As the bidirectional threaded rod 5 rotates, the sliders 6 on both sides move accordingly. The movement of the sliders 6 further causes the racks 7 to move. Since the two racks 7 mesh with the gears 9 on both sides, when the racks 7 move, the gears 9 on both sides also rotate. The rotation of the gears 9 drives the rotating rod 8 connected to it to rotate. The rotation of the rotating rod 8 drives the rupture disc 10 to rotate. The rotation of the rupture disc 10 can effectively seal the outer cylinder 1. Moreover, the two rupture discs 10 can simultaneously seal both sides of the outer cylinder 1, ensuring the comprehensiveness and reliability of the sealing effect, improving the safety of the device, and meeting the needs of users.

[0041] Reference Figure 2 , Figure 4 and Figure 5 The fixing mechanism 2 includes a connector 201. Two connectors 201 are slidably connected to the left and right ends of the inner cavity of the outer cylinder 1. An inclined surface 202 is provided on the adjacent side of the outer wall of the two connectors 201. Multiple mounting grooves 203 are provided at equal intervals around the left and right ends of the outer wall of the outer cylinder 1. Rotating columns 204 are rotatably connected inside the multiple mounting grooves 203. Connecting blocks 205 are fixedly connected to the outer side of the multiple rotating columns 204. A retaining plate 206 is fixedly connected to one side of the multiple connecting blocks 205. Limiting blocks 13 are fixedly connected to the front and rear sides of the two connectors 201. Limiting grooves 12 are provided on the front and rear sides of the left and right ends of the inner cavity of the outer cylinder 1. The interior of the multiple limiting grooves 12 is slidably connected to the corresponding limiting blocks 13.

[0042] Specifically, when using this device, after the sealing work is completed, pressure injection can be performed inside the oil and gas well. During this process, when the connector 201 is squeezed, it will move to one side of the outer cylinder 1. Since the slips 206 are connected to the mounting groove 203 on the outside of the outer cylinder 1 through the rotating column 204, when the connector 201 moves under the squeezing action, it will push multiple slips 206 to expand outward through the force of the inclined surface 202. The expansion of the slips 206 outward will fit tightly against the well wall of the oil and gas well, thereby achieving the purpose of firmly fixing the entire device to the well wall, so that the device will not move during the sealing process, thus improving the practicality of the device.

[0043] Reference Figure 2 and Figure 5 The inner cavity 3 has sliding grooves 11 on both the left and right sides of the bottom end. The interior of the two sliding grooves 11 is slidably connected to the corresponding sliders 6. One end of the interior of the multiple limiting grooves 12 is fixedly connected to a spring 14. One end of the multiple springs 14 is fixedly connected to the corresponding limiting blocks 13.

[0044] Specifically, the slide groove 11 can limit the movement of the slider 6, so that the slider 6 can move along the slide groove 11 when the bidirectional threaded rod 5 rotates. The spring 14 can push the limiting block 13, so that the joint 201 will not move to one side of the outer cylinder 1 when it is not subjected to external force.

[0045] Reference Figure 1 and Figure 5 The right end of the outer wall of the right connector 201 is provided with a mating interface 16, and the right end of the mating interface 16 is provided with a second thread 17. The left end of the inner wall of the left connector 201 is provided with a first thread 15. The internal size of the limiting groove 12 matches the size of the limiting block 13.

[0046] Specifically, the device can be installed via the second thread 17, making it easy to send the device into the oil and gas well. The auxiliary equipment can be easily installed on the front side of the device via the first thread 15, facilitating the injection pressure work of the oil and gas well. The internal size of the limiting groove 12 matches the size of the limiting block 13, so that the connector 201 will not shake.

[0047] Working principle: When using this device, it is first installed inside the wellbore of the oil and gas well. When the sealing work is required, the motor 4 drives the bidirectional threaded rod 5 to rotate. When the bidirectional threaded rod 5 rotates, the sliders 6 on both sides will move accordingly. When the sliders 6 move, they will drive the rack 7 to move. Since the gears 9 on both sides mesh with the rack 7 respectively, when the two racks 9 move, the gears 7 on both sides will drive the rotating rod 8 to rotate. When the rotating rod 8 rotates, it will drive the rupture discs 10 on both sides to rotate. At this time, the rotation of the rupture discs 10 can seal the outer cylinder 1, and the two rupture discs 10 can seal both sides of the outer cylinder 1.

[0048] Furthermore, when using this device, after the sealing work is completed, pressure can be injected into the oil and gas well. At this time, the joint 201 will be squeezed and move to the side of the outer cylinder 1. Since the slips 206 are connected to the mounting groove 203 on the outside of the outer cylinder 1 through the rotating column 204, when the joint 201 moves, it can push multiple slips 206 to expand outward through the inclined surface 202. The expansion of multiple slips 206 to the outside will fit tightly against the well wall of the oil and gas well, thus firmly fixing the device so that the device will not move during the sealing process.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ruptured disc sealing tool, comprising an outer cylinder (1), characterized in that: The inner top of the outer cylinder (1) is provided with an inner cavity (3). A motor (4) is fixedly connected to the left inner side of the inner cavity (3). A bidirectional threaded rod (5) is fixedly connected to the output end of the motor (4). A slider (6) is threadedly connected to the left and right sides of the outer wall of the bidirectional threaded rod (5). A rack (7) is fixedly connected to the front side of the two sliders (6). A rotating rod (8) is rotatably connected to the left and right sides of the inner bottom of the inner cavity (3). A gear (9) is fixedly connected to the top of the two rotating rods (8). The two gears (9) are respectively meshed with the corresponding racks (7). The bottom ends of the two rotating rods (8) penetrate the outer cylinder (1) and are fixedly connected to a rupture piece (10). A fixing mechanism (2) is provided on the left and right sides of the outer cylinder (1). The fixing mechanism (2) is used to facilitate the tool to perform fixing work.

2. The rupture disc sealing tool according to claim 1, characterized in that: The fixing mechanism (2) includes a connector (201). Two connectors (201) are slidably connected to the left and right ends of the inner wall of the outer cylinder (1). An inclined surface (202) is provided on the adjacent side of the outer wall of the two connectors (201). Multiple mounting grooves (203) are provided at equal intervals around the left and right ends of the outer wall of the outer cylinder (1). Rotating columns (204) are rotatably connected inside the multiple mounting grooves (203). Connecting blocks (205) are fixedly connected to the outer side of the multiple rotating columns (204). A locking plate (206) is fixedly connected to one side of the multiple connecting blocks (205).

3. The rupture disc sealing tool according to claim 1, characterized in that: The inner cavity (3) has sliding grooves (11) on both the left and right sides of its bottom. The interior of each of the two sliding grooves (11) is slidably connected to the corresponding slider (6).

4. The rupture disc sealing tool according to claim 2, characterized in that: Limiting blocks (13) are fixedly connected to the front and rear sides of the two connectors (201). Limiting grooves (12) are opened on the front and rear sides of the left and right ends of the outer cylinder (1). The interior of the multiple limiting grooves (12) is slidably connected to the corresponding limiting blocks (13).

5. A ruptured disc sealing tool according to claim 4, characterized in that: Each of the multiple limiting grooves (12) has a spring (14) fixedly connected to one end inside, and one end of each of the multiple springs (14) is fixedly connected to the corresponding limiting block (13).

6. The rupture disc sealing tool according to claim 1, characterized in that: The inner dimensions of the outer cylinder (1) are matched with the dimensions of the rupture disc (10), and the inner dimensions of the outer cylinder (1) are matched with the dimensions of the connector (201).

7. The rupture disc sealing tool according to claim 2, characterized in that: The right end of the outer wall of the connector (201) on the right side is provided with a mating interface (16), and the right end of the mating interface (16) is provided with a second thread (17).

8. A ruptured disc sealing tool according to claim 4, characterized in that: The left end of the connector (201) on the left side is provided with a first thread (15), and the internal size of the limiting groove (12) matches the size of the limiting block (13).

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