Assembled bridge plug shell
By introducing a tile mechanism and a conical table structure into the bridge plug shell, the problem of loose connection of the bridge plug under high pressure is solved, and the stable installation of the bridge plug and effective isolation of the borehole is achieved, and accidents are avoided.
Patent Information
- Application Number
- CN202423026448.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The tile structure of the existing bridge plug is prone to dispersion under high pressure, resulting in the inability to reach the predetermined position, which may cause accidents.
A prefabricated bridge plug shell is designed, adopting a tile mechanism and a conical table structure. Through the cooperation of the slide rod, the tile block and the tile ring, the bridge plug is ensured to be stable in high pressure conditions and after reaching the predetermined position. Use external pressure to push the caliper and slide rod to achieve effective isolation of the bridge plug.
This design enables the bridge plug to be installed and connected stably under high pressure conditions, avoid accidents, and effectively separate the wellbore after reaching the predetermined position to achieve the purpose of isolating the layer section.
Smart Images
Figure CN222315108U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge plugs, in particular to an assembled bridge plug shell. Background Art
[0002] The bridge plug is an important tool used to plug wells and isolate layers in drilling projects such as oil and gas wells. It mainly consists of the bridge plug body, release mechanism, anchor mechanism and connectors. The bridge plug body is generally made of high-strength alloy steel with good pressure and temperature resistance. The release mechanism is responsible for releasing the bridge plug at the predetermined position, and the anchor mechanism ensures that the bridge foundation is stable in the well.
[0003] The bridge plug mainly utilizes the special shape and size of the bridge plug body to form an insurmountable barrier in the wellbore and isolate the layer sections from the surface. When the bridge plug is lowered and the hole is opened to reach the predetermined position, the release mechanism is activated under the preset conditions to separate the bridge plug body from the release mechanism, and the bridge plug body is deployed and anchored in the wellbore. At this time, the bridge plug body forms an insurmountable bridge, dividing the wellbore into two parts, thus achieving the purpose of isolating the layer sections.
[0004] The applicant has searched the existing bridge plugs and found that a slip structure is usually used as the anchoring structure of the bridge plug, which is easy to operate and has a good sealing effect. However, the slip structure of the existing bridge plug is usually in a loose state. When the bridge plug passes through the bend of the oil and gas well under high pressure, the collision with the oil and gas pipeline will make the slip structure easy to disperse, thereby causing the bridge plug to fail to reach the predetermined position, which is easy to cause accidents.
[0005] Therefore, in view of the above problems, it is necessary for the applicant to design an assembled bridge plug housing to solve the problems. Summary of the invention
[0006] The purpose of the utility model is to provide an assembled bridge plug housing to solve the problems mentioned in the above background technology.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembled bridge plug housing, comprising an upper joint, a front hydraulic cylinder is fixedly provided at one end of the upper joint, and an upper push cylinder is fixedly provided at the end of the front hydraulic cylinder away from the upper joint, an intermediate cylinder is fixedly provided at the end of the upper push cylinder away from the front hydraulic cylinder, and a rubber sleeve is provided on the outside of the intermediate cylinder, a connecting cylinder is fixedly provided at the end of the intermediate cylinder away from the upper push cylinder, and a cava head is fixedly provided at the end of the connecting cylinder away from the intermediate cylinder, and a plurality of cava mechanisms are provided on the outside of the connecting cylinder, and the plurality of cava mechanisms are the same.
[0008] Furthermore, a slip seat is sleeved on the outer side of the connecting tube, a plurality of slip grooves are arranged on one side of the slip seat, and groove holes are opened on the inner surfaces of both sides of the plurality of slip grooves.
[0009] Furthermore, the slip mechanism comprises a slip block, and a snap block is integrally connected to one side of the slip block, sliding rods are fixedly provided on both sides of the snap block, and the sliding rods are adapted to the plurality of slots.
[0010] Furthermore, a slip plate is integrally connected to one side of the slip block, and a plurality of anti-sliding blocks are integrally provided on one side of the slip plate.
[0011] Furthermore, a groove is provided on one side of the slip plate, and a slip ring is detachably installed on the inner surface of the groove.
[0012] Furthermore, a conical platform is arranged on the outer side of the connecting tube, and a plurality of inclined surfaces are arranged on the outer side of the conical platform, and the plurality of inclined surfaces are respectively in close contact with a plurality of slip plates.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the assembled bridge plug housing is convenient for installing slips, and the slips are tightly connected to the bridge plug housing, which facilitates the bridge plug to reach a predetermined position under high pressure. The specific contents are as follows:
[0014] 1. A slip mechanism is provided. During installation, the slide rod is engaged into the groove, so that the slip block is engaged into the slip seat, and the slip plate is close to the inclined surface on the side of the conical platform. After the slip block and the slip plate are installed, an elastic slip ring is engaged in the groove by external force. The elastic force of the slip ring facilitates pressing the slip plate, which will make the connection of the assembled bridge plug shell tight and facilitate passing through the turning of the oil and gas well, thereby facilitating the bridge plug to reach the predetermined position and preventing accidents.
[0015] 2. A conical platform and a slip seat are provided. When the bridge plug reaches the predetermined position, the slip seat will be pushed to move in the direction of the upper joint under the action of the bridge plug release mechanism and the external pressure. Under the action of the inclined surface, the slip seat will push the slide rod to move. The movement of the slide rod is convenient for driving the engaging block to move. The movement of the engaging block is convenient for driving the slip block to move. The movement of the slip block is convenient for driving the slip plate to move, so that the slip plate can push the anti-sliding block to fit tightly against the inner wall of the oil and gas well, so as to divide the wellbore into two parts, thereby achieving the purpose of isolating the layer section. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the overall split structure of the utility model;
[0018] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;
[0019] Figure 4It is a schematic diagram of the three-dimensional structure of the slip mechanism of the utility model.
[0020] In the figure: 1, upper joint; 2, slip mechanism; 10, front hydraulic cylinder; 11, intermediate cylinder; 12, connecting cylinder; 13, slip head; 14, conical platform; 15, inclined surface; 16, slip seat; 17, slip groove; 18, groove hole; 19, slip ring; 20, slip block; 21, locking block; 22, sliding rod; 23, slip plate; 24, groove; 100, upper push cylinder; 110, rubber sleeve; 230, anti-sliding block. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] like Figure 1-Figure 4 As shown, an assembled bridge plug housing of the utility model comprises an upper joint 1, a front hydraulic cylinder 10 is fixedly provided at one end of the upper joint 1, and an upper push cylinder 100 is fixedly provided at the end of the front hydraulic cylinder 10 away from the upper joint 1, an intermediate cylinder 11 is fixedly provided at the end of the upper push cylinder 100 away from the front hydraulic cylinder 10, and a rubber sleeve 110 is provided on the outer side of the intermediate cylinder 11, a connecting cylinder 12 is fixedly provided at the end of the intermediate cylinder 11 away from the upper push cylinder 100, and a cava head 13 is fixedly provided at the end of the connecting cylinder 12 away from the intermediate cylinder 11, and a plurality of cava mechanisms 2 are provided on the outer side of the connecting cylinder 12, and the plurality of cava mechanisms 2 are the same.
[0023] A cava seat 16 is sleeved on the outer side of the connecting tube 12, and a plurality of cava grooves 17 are arranged on one side of the cava seat 16, and groove holes 18 are opened on the inner surfaces of both sides of the plurality of cava grooves 17, the cava mechanism 2 includes a cava block 20, and a clamping block 21 is integrally connected to one side of the cava block 20, and sliding rods 22 are fixedly arranged on both sides of the clamping block 21, and the sliding rods 22 are adapted to the plurality of groove holes 18, a conical platform 14 is arranged on the outer side of the connecting tube 12, and a plurality of inclined surfaces 15 are arranged on the outer side of the conical platform 14, and the plurality of inclined surfaces 15 are respectively tightly attached to a plurality of cava plates 23.
[0024] Through the above structural design, during installation, the sliding rod 22 is engaged into the groove 24, so that the slip block 20 is engaged into the slip seat 16, and the slip plate 23 is close to the side of the conical platform 14 close to the inclined surface 15. After the slip block 20 and the slip plate 23 are installed, the elastic slip ring 19 is engaged in the groove 24 by external force. The elastic force of the slip ring 19 facilitates pressing the slip plate 23, which will make the connection of the assembled bridge plug shell tight and convenient for passing through the turning point of the oil and gas well, thereby facilitating the bridge plug to reach the predetermined position and preventing accidents.
[0025] One side of the slip block 20 is integrally connected with a slip plate 23, and one side of the slip plate 23 is integrally provided with a plurality of anti-sliding blocks 230. One side of the slip plate 23 is provided with a groove 24, and the inner surface of the groove 24 is provided with a slip ring 19 which is removable and installed.
[0026] Through the above structural design, when the bridge plug reaches the predetermined position, the bridge plug release mechanism and the external pressure will push the slip seat 16 to move in the direction of the upper joint 1. Under the action of the inclined surface 15, the slip seat 16 will push the slide rod 22 to move. The movement of the slide rod 22 is convenient for driving the engaging block 21 to move. The movement of the engaging block 21 is convenient for driving the slip block 20 to move. The movement of the slip block 20 is convenient for driving the slip plate 23 to move, so that the slip plate 23 can push the anti-sliding block 230 to be close to the inner wall of the oil and gas well, so as to divide the wellbore into two parts, thereby achieving the purpose of isolating the layer section.
[0027] Working principle: When using the assembled bridge plug shell, during installation, the slide rod 22 is engaged into the groove 24, so that the slip block 20 is engaged into the slip seat 16, and the slip plate 23 is close to the side of the conical platform 14 and close to the inclined surface 15. After the slip block 20 and the slip plate 23 are installed, the elastic slip ring 19 is engaged in the groove 24 by external force. The elastic force of the slip ring 19 facilitates pressing the slip plate 23, which will make the assembled bridge plug shell tightly connected and convenient for passing through the bend of the oil and gas well, so as to facilitate the bridge plug to reach the predetermined position. When the bridge plug reaches the predetermined position, the bridge plug release mechanism and the external pressure will push the slip seat 16 to move in the direction of the upper joint 1. Under the action of the inclined surface 15, the slip seat 16 will push the slide bar 22 to move. The movement of the slide bar 22 is convenient for driving the engaging block 21 to move. The movement of the engaging block 21 is convenient for driving the slip block 20 to move. The movement of the slip block 20 is convenient for driving the slip plate 23 to move, so that the slip plate 23 can push the anti-sliding block 230 to be close to the inner wall of the oil and gas well, so as to divide the wellbore into two parts, thereby achieving the purpose of isolating the layer section.
[0028] Based on the above embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. An assembled bridge plug housing, comprising an upper joint (1), characterized in that: A front hydraulic cylinder (10) is fixedly provided at one end of the upper joint (1), and an upper push cylinder (100) is fixedly provided at the end of the front hydraulic cylinder (10) away from the upper joint (1); an intermediate cylinder (11) is fixedly provided at the end of the upper push cylinder (100) away from the front hydraulic cylinder (10), and a rubber sleeve (110) is provided on the outer side of the intermediate cylinder (11); a connecting cylinder (12) is fixedly provided at the end of the intermediate cylinder (11) away from the upper push cylinder (100), and a cava head (13) is fixedly provided at the end of the connecting cylinder (12) away from the intermediate cylinder (11); a plurality of cava mechanisms (2) are provided on the outer side of the connecting cylinder (12), and the plurality of cava mechanisms (2) are identical.
2. The assembled bridge plug housing according to claim 1, characterized in that: The outer side of the connecting tube (12) is sleeved with a slip seat (16), one side of the slip seat (16) is provided with a plurality of slip grooves (17), and the inner surfaces of both sides of the plurality of slip grooves (17) are provided with slot holes (18).
3. The assembled bridge plug housing according to claim 2, characterized in that: The slip mechanism (2) comprises a slip block (20), and a snap block (21) is integrally connected to one side of the slip block (20), and sliding rods (22) are fixedly provided on both sides of the snap block (21), and the sliding rods (22) are adapted to fit the plurality of slots (18).
4. The assembled bridge plug housing according to claim 3, characterized in that: One side of the slip block (20) is integrally connected to a slip plate (23), and one side of the slip plate (23) is integrally provided with a plurality of anti-sliding blocks (230).
5. The assembled bridge plug housing according to claim 4, characterized in that: A groove (24) is formed on one side of the slip plate (23), and a slip ring (19) is detachably mounted on the inner surface of the groove (24).
6. The assembled bridge plug housing according to claim 5, characterized in that: A conical platform (14) is arranged on the outside of the connecting tube (12), and a plurality of inclined surfaces (15) are arranged on the outside of the conical platform (14), and the plurality of inclined surfaces (15) are respectively in close contact with a plurality of slip plates (23).