Bridge plug adaptive to multiple pipe diameters

Abstract

The bridge plug comprises a connector, a shell is arranged at one end of the connector, a rubber sleeve is fixedly arranged at one end of the shell, an installation shell is fixedly arranged on the side, away from the shell, of the rubber sleeve, a slip assembly is arranged on the outer side of the installation shell, and the slip assembly is arranged on the outer side of the installation shell. A fixing shell is fixedly arranged at the end, away from the rubber sleeve, of the mounting shell, the stabilizing mechanism comprises a fixing sleeve, the fixing shell is sleeved with the fixing sleeve, a plurality of fixing bases are fixedly arranged on the outer surface of the fixing sleeve, and one side of each fixing base is fixedly connected with the outer surface of the fixing sleeve; and each control mechanism comprises a protective sleeve, and one side of each protective sleeve is fixedly connected with one side of the fixed seat. The bridge plug capable of being adaptive to multiple pipe diameters can be adaptive to oil and gas pipelines with multiple pipe diameters, and is wide in application range, firm in setting and good in sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge plugs, in particular to a bridge plug which can be adapted to multiple pipe diameters. Background Art

[0002] The bridge plug device is an important tool used to plug the wellbore and isolate the layer section in oil and gas well drilling projects. It is widely used in oil and gas well drilling, water injection, testing and other operations. For example, in the process of oil and gas well drilling, the bridge plug can be used to plug the wellbore and isolate the oil and water layer; in the water injection operation, the bridge plug can be used to separate the water injection layer section and improve the water injection effect; in the testing operation, the bridge plug can be used to isolate the test layer section and obtain accurate test data.

[0003] The applicant searched the existing bridge plugs and found that the bridge plugs in the prior art could not fully deform during the sealing process due to the imperfect structure of the rubber cylinder, which resulted in the rubber cylinder not being able to be well sealed with the inner wall of the casing, thus affecting the effective sealing effect of the gas well layer. The bridge plug disclosed in Chinese Patent No. CN207568553U includes a center tube, a rubber cylinder and an extrusion assembly. Among them, the rubber cylinder is sleeved on the center tube, and the rubber cylinder has an annular groove, which is arranged on the inner wall of the rubber cylinder and located in the middle of the rubber cylinder. The extrusion assembly is arranged on the center tube and close to the rubber cylinder. The extrusion assembly has a fixed position fixed on the center tube and an extrusion position for extruding the rubber cylinder. The bridge plug can make the rubber cylinder fully deform and fully seal when compressed, and at the same time make the rubber cylinder hug the center tube, so as to achieve the purpose of effectively sealing the gas well layer.

[0004] However, the applicant found that when using the bridge plug, the rubber sleeve can deform to adapt to oil and gas well pipes of various diameters. However, when the diameter of the oil and gas well pipe is larger, the pressure resistance of the bridge plug is reduced, which will make the seal not firm enough, thereby reducing the use effect.

[0005] Therefore, in view of the above problems, it is necessary for the applicant to design a bridge plug that can adapt to multiple pipe diameters to solve the problem. Summary of the invention

[0006] The purpose of the utility model is to provide a bridge plug that can adapt to multiple pipe diameters to solve the problems mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a bridge plug adaptable to multiple pipe diameters, comprising a joint, one end of the joint is provided with a shell, and one end of the shell is fixedly provided with a rubber cylinder, a side of the rubber cylinder away from the shell is fixedly provided with a mounting shell, and a slip assembly is provided on the outside of the mounting shell, and a fixing shell is fixedly provided at one end of the mounting shell away from the rubber cylinder.

[0008] It also includes: a stabilizing mechanism, the stabilizing mechanism includes a fixing sleeve, and the fixing sleeve is arranged outside the fixing shell, the outer surface of the fixing sleeve is fixedly provided with a plurality of fixing seats, and one side of the plurality of fixing seats is fixedly connected to the outer surface of the fixing sleeve;

[0009] A plurality of control mechanisms, each of which comprises a protective sleeve, and one side of the protective sleeve is fixedly connected to one side of the fixing seat.

[0010] Furthermore, a base is fixedly provided on the inner surface of one side of the protective sleeve, and a hydraulic cylinder is fixedly provided on the outer surface of one side of the base near the center, a connecting disk is fixedly provided on the output end of the hydraulic cylinder, and the outer surface of the connecting disk is slidably connected to the inner surface of the protective sleeve.

[0011] Furthermore, a buffer spring is fixedly provided on one side of the connecting disk near the center, an extension rod is fixedly provided on one end of the buffer spring away from the connecting disk, and an anti-skid plate is fixedly provided on one end of the extension rod away from the buffer spring.

[0012] Furthermore, a support rod is fixedly provided on the bottom surface of the protective sleeve, a support seat is fixedly provided on one end of the support rod away from the protective sleeve, and one side of the support seat is fixedly connected to the outer surface of the fixed sleeve.

[0013] Furthermore, a reinforcement rod is fixedly provided on the top surface of the support seat, and one end of the reinforcement rod away from the support seat is fixedly connected to the outer surface of the support rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the bridge plug adaptable to multiple diameters can be adapted to oil and gas pipelines of various diameters, has a wide range of uses, and has a firm seal and good sealing effect. The specific contents are as follows:

[0015] 1. A control mechanism is provided. When the bridge plug reaches the predetermined position, the hydraulic cylinder is started, and the hydraulic cylinder will push the connecting plate to move. The movement of the connecting plate will push the buffer spring to move. The movement of the buffer spring will push the extension rod to move. The movement of the extension rod will push the anti-slip plate to squeeze the inner wall of the oil and gas well. The seal is firm and the use effect is good.

[0016] 2. A stabilizing mechanism is provided. When the bridge plug is seated and the anti-slip plate is pressed against the inner wall of the oil and gas well, when the protective sleeve is subjected to external pressure, the pressure will be transmitted to the support rod and the reinforcement rod. The support rod and the reinforcement rod are convenient for transmitting the pressure to the support seat. Since the support rod, the reinforcement rod and the support seat are triangular, the triangle is stable, so it is convenient to improve the pressure resistance of the protective sleeve, which will improve the firmness of the bridge plug and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the stabilizing mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the stabilizing mechanism and the control mechanism of the utility model;

[0020] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the control mechanism of the utility model.

[0021] In the figure: 1. joint; 2. stabilizing mechanism; 3. control mechanism; 10. shell; 11. rubber cylinder; 12. mounting shell; 13. slip assembly; 14. fixing shell; 20. fixing sleeve; 21. fixing seat; 22. anti-skid plate; 23. support rod; 24. support seat; 25. reinforcement rod; 30. protective sleeve; 31. base; 32. hydraulic cylinder; 33. connecting plate; 34. buffer spring; 35. extension rod. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-Figure 4 As shown, the utility model is a bridge plug that can adapt to multiple pipe diameters, including a joint 1, a shell 10 is provided at one end of the joint 1, and a rubber cylinder 11 is fixedly provided at one end of the shell 10, a mounting shell 12 is fixedly provided on the side of the rubber cylinder 11 away from the shell 10, and a slip assembly 13 is provided on the outside of the mounting shell 12, and a fixed shell 14 is fixedly provided on the end of the mounting shell 12 away from the rubber cylinder 11, and also includes a plurality of control mechanisms 3, and the plurality of control mechanisms 3 all include a protective sleeve 30, and one side of the protective sleeve 30 is fixedly connected to one side of the fixing seat 21. A base 31 is fixedly provided on the inner surface of one side of the protective sleeve 30, and a hydraulic cylinder 32 is fixedly provided on the outer surface of one side of the base 31 near the center, a connecting disk 33 is fixedly provided on the output end of the hydraulic cylinder 32, and the outer surface of the connecting disk 33 is slidably connected to the inner surface of the protective sleeve 30, a buffer spring 34 is fixedly provided on one side of the connecting disk 33 near the center, an extension rod 35 is fixedly provided on one end of the buffer spring 34 away from the connecting disk 33, and an anti-skid plate 22 is fixedly provided on one end of the extension rod 35 away from the buffer spring 34.

[0024] Through the above structural design, when in use, when the bridge plug reaches the predetermined position of the oil and gas well pipeline, the release mechanism inside the bridge plug is started under preset conditions, so that the bridge plug body is separated from the release mechanism, and the bridge plug body is deployed in the wellbore and anchored by the rubber cylinder 11 and the slip assembly 13. At this time, the bridge plug body forms an insurmountable bridge, dividing the wellbore into two parts, the upper and lower parts, so as to achieve the purpose of isolating the layer sections. At the same time, the hydraulic cylinder 32 is started, the hydraulic cylinder 32 will push the connecting plate 33 to move, the movement of the connecting plate 33 will push the buffer spring 34 to move, the movement of the buffer spring 34 will push the extension rod 35 to move, and the movement of the extension rod 35 will push the anti-slip plate 22 to squeeze the inner wall of the oil and gas well, so that the seal is firm and the use effect is good.

[0025] The stabilizing mechanism 2 includes a fixing sleeve 20, and the fixing sleeve 20 is sleeved on the outside of the fixing shell 14. A plurality of fixing seats 21 are fixedly provided on the outer surface of the fixing sleeve 20, and one side of the plurality of fixing seats 21 are fixedly connected to the outer surface of the fixing sleeve 20. A support rod 23 is fixedly provided on the bottom surface of the protective sleeve 30, and a support seat 24 is fixedly provided on one end of the support rod 23 away from the protective sleeve 30, and one side of the support seat 24 is fixedly connected to the outer surface of the fixing sleeve 20. A reinforcement rod 25 is fixedly provided on the top surface of the support seat 24, and one end of the reinforcement rod 25 away from the support seat 24 is fixedly connected to the outer surface of the support rod 23.

[0026] Through the above-mentioned structural design, when the bridge plug is sealed and the anti-skid plate 22 is pressed against the inner wall of the oil and gas well, when the protective sleeve 30 is subjected to external pressure, the pressure will be transmitted to the support rod 23 and the reinforcement rod 25. The support rod 23 and the reinforcement rod 25 are convenient for transmitting the pressure to the support seat 24. Since the support rod 23, the reinforcement rod 25 and the support seat 24 are triangular, the triangle is stable, so it is convenient to improve the pressure resistance of the protective sleeve 30, which will improve the firmness of the bridge plug sealing and the sealing effect is good.

[0027] Working principle: When the bridge plug that can adapt to multiple diameters is used, when the bridge plug reaches the predetermined position of the oil and gas well pipeline, the release mechanism inside the bridge plug is activated under the preset conditions, so that the bridge plug body is separated from the release mechanism, and the bridge plug body is deployed in the wellbore and anchored by the rubber cylinder 11 and the slip assembly 13. At this time, the bridge plug body forms an insurmountable bridge, dividing the wellbore into two parts, the upper and lower parts, to achieve the purpose of isolating the layer section, and at the same time, the hydraulic cylinder 32 is started, the hydraulic cylinder 32 will push the connecting plate 33 to move, the movement of the connecting plate 33 will push the buffer spring 34 to move, and the buffer spring 34 moves. The movement will push the extension rod 35 to move, and the movement of the extension rod 35 will push the anti-slip plate 22 to squeeze the inner wall of the oil and gas well, so that the sealing is firm and the use effect is good. When the bridge plug is sealed and the anti-slip plate 22 is pressed against the inner wall of the oil and gas well, when the protective sleeve 30 is subjected to external pressure, the pressure will be transmitted to the support rod 23 and the reinforcement rod 25. The support rod 23 and the reinforcement rod 25 are convenient for transmitting the pressure to the support seat 24. Since the support rod 23, the reinforcement rod 25 and the support seat 24 are triangular, the triangle is stable, so it is convenient to improve the pressure resistance of the protective sleeve 30, which will improve the firmness of the bridge plug sealing and have a good sealing effect.

[0028] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating 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 of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A bridge plug adaptable to multiple pipe diameters, comprising a joint (1), wherein a shell (10) is provided at one end of the joint (1), and a rubber sleeve (11) is fixedly provided at one end of the shell (10), a mounting shell (12) is fixedly provided at a side of the rubber sleeve (11) away from the shell (10), a slip assembly (13) is provided on the outside of the mounting shell (12), and a fixing shell (14) is fixedly provided at one end of the mounting shell (12) away from the rubber sleeve (11), It is characterized in that Also includes: A stabilizing mechanism (2), the stabilizing mechanism (2) comprising a fixing sleeve (20), wherein the fixing sleeve (20) is sleeved on the outside of the fixing shell (14), a plurality of fixing seats (21) are fixedly provided on the outer surface of the fixing sleeve (20), and one side of the plurality of fixing seats (21) is fixedly connected to the outer surface of the fixing sleeve (20); A plurality of control mechanisms (3), each of the plurality of control mechanisms (3) comprising a protective sleeve (30), and one side of the protective sleeve (30) is fixedly connected to one side of a fixing seat (21).

2. A bridge plug adaptable to multiple pipe diameters according to claim 1, characterized in that: A base (31) is fixedly provided on the inner surface of one side of the protective sleeve (30), and a hydraulic cylinder (32) is fixedly provided on the outer surface of one side of the base (31) near the center, and a connecting disk (33) is fixedly provided on the output end of the hydraulic cylinder (32), and the outer surface of the connecting disk (33) is slidably connected to the inner surface of the protective sleeve (30).

3. The bridge plug adaptable to multiple pipe diameters according to claim 2, characterized in that: A buffer spring (34) is fixedly provided on one side of the connection disk (33) near the center, an extension rod (35) is fixedly provided on one end of the buffer spring (34) away from the connection disk (33), and an anti-slip plate (22) is fixedly provided on one end of the extension rod (35) away from the buffer spring (34).

4. A bridge plug adaptable to multiple pipe diameters according to claim 3, characterized in that: A support rod (23) is fixedly disposed on the bottom surface of the protective sleeve (30), a support seat (24) is fixedly disposed on one end of the support rod (23) away from the protective sleeve (30), and one side of the support seat (24) is fixedly connected to the outer surface of the fixed sleeve (20).

5. A bridge plug adaptable to multiple pipe diameters according to claim 4, characterized in that: A reinforcing rod (25) is fixedly disposed on the top surface of the support seat (24), and one end of the reinforcing rod (25) away from the support seat (24) is fixedly connected to the outer surface of the support rod (23).

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