Expansion type hanger for well cementation

Abstract

The utility model discloses an expansion type hanger for well cementation, which comprises a hanger body, and the hanger body comprises a feeding joint and a discharging joint. The protection assembly comprises a fixed plate, a sleeve, a movable rod, a first limiting block, a second limiting block, a telescopic spring and a clamping plate; the fixing plate is placed at the outer ends of the feeding connector and the discharging connector, the sleeve is fixedly connected to the inner side of the fixing plate, the movable rod penetrates through the center in the sleeve and extends outwards, and the first limiting block is fixedly connected to one end of the movable rod. Clamping plates are placed on the outer sides of a feeding connector and a discharging connector, the clamping plates can clamp the feeding connector and the discharging connector under the elastic action of telescopic springs, and when collision occurs, a sleeve and a movable rod weaken the collision force through the telescopic springs, so that the clamping plates are prevented from being damaged, and the service life of the feeding connector and the discharging connector is prolonged. And therefore, the time when the collision force is transmitted to the clamping plate is reduced, and the effect that the feed-in connector and the feed-out connector are effectively protected is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hangers, in particular to an expansion hanger for cementing. Background Art

[0002] The liner hanger is a downhole tool used to hang the liner on the upper casing string. It is one of the casing accessories. The liner hanger is used to achieve liner cementing, reduce the weight of the casing lowered in a deep well, improve the load on the drilling rig hoisting system when running the casing, and reduce the flow resistance of the injected cement slurry, which is conducive to safe construction. Among them, the expandable liner hanger is a relatively common liner hanger with a wide range of applications.

[0003] After searching, Chinese authorized patent number CN220815595U authorized the disclosure of an expandable tail pipe hanger, belonging to the technical field of tail pipe hangers, comprising an inlet joint, a suspension expansion tube, a delivery joint, and a center pipe. The inlet joint is installed on the upper part of the center pipe, and a joint cover A is provided at the inlet joint; the delivery joint is installed on the lower part of the center pipe, and a joint cover B is provided at the delivery joint; the suspension expansion tube is installed on the center pipe, and a buffer chamber A is provided on the outer surface of the suspension expansion tube; a plurality of protective rings are provided on the suspension expansion tube, and the protective rings are fixed to the outer surface of the suspension expansion tube. The expandable tail pipe hanger described in the utility model has a reasonable design, a simple structure, a protective function, and a high installation stability. It is convenient for workers to transport, install, and use, and can effectively improve work efficiency.

[0004] When the existing hanger uses a joint cover to protect the input joint and the output joint, since the joint cover is fixed to the inside of the input joint and the output joint by threads, when the joint cover collides, the force will be directly transmitted to the input joint and the output joint without any buffer in the middle, resulting in the joint cover being unable to effectively protect the input joint and the output joint. Therefore, it is necessary to provide a device that can effectively protect the input joint and the output joint to protect the input joint and the output joint. Utility Model Content

[0005] The purpose of the present utility model is to provide an expandable hanger for cementing, so as to solve the problem proposed in the above background technology that when the existing hanger uses a joint cover to protect the input joint and the output joint, since the joint cover is fixed to the inside of the input joint and the output joint by threads, when the joint cover collides, the force will be directly transmitted to the input joint and the output joint without any buffer in between, resulting in the joint cover being unable to effectively protect the input joint and the output joint.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is an expansion hanger for cementing, comprising:

[0008] a hanger body, the hanger body comprising a delivery sub and a delivery sub;

[0009] A protection assembly, comprising a fixed plate, a sleeve, a movable rod, a first limit block, a second limit block, a telescopic spring and a clamping plate;

[0010] The fixed plate is placed at the outer end position of the feeding joint and the feeding joint, the sleeve is fixedly connected to the inner side position of the fixed plate, the movable rod passes through the center of the sleeve and extends outward, the first limit block is fixedly connected to one end position of the movable rod, the second limit block is fixedly connected to the other end position of the movable rod, the telescopic spring is fixedly connected to the inner position of the first limit block, and the clamping plate is sleeved on the outer surface position of the second limit block.

[0011] Furthermore, the hanger body further comprises a suspension expansion tube;

[0012] The delivery joint is fixedly connected to one end of the suspension expansion pipe, and the delivery joint is fixedly connected to the other end of the suspension expansion pipe.

[0013] Furthermore, the other end of the telescopic spring is fixedly connected to the outer surface of the sleeve, and the first limit block is located outside the sleeve.

[0014] Furthermore, the clamping plate is an arc-shaped structure, and the inner side surface of the clamping plate is respectively fitted with the outer surface of the feeding joint and the feeding joint.

[0015] Furthermore, it also includes a movable assembly, which includes a support plate, a through hole, a support rod and a fixing nut;

[0016] The support plate is fixedly connected to the outer end of the sleeve, through holes are opened around the outer end of the support plate, the support rod extends outward through the through holes, and the fixing nuts are threadedly connected to the outer surfaces of both ends of the support rod.

[0017] Furthermore, outer surfaces at both ends of the support rod have threaded structures opened relative to the fixing nut, and the support rod is located outside the suspension expansion tube.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. The utility model provides a protective component, and the first limit block drives the movable rod to move outward, so that the clamping plate moves outward under the drive of the movable rod and the second limit block. The first limit block moves outward and drives the telescopic spring to stretch, and then the clamping plate is placed at the outside of the feeding joint and the sending joint, so that the clamping plate can clamp the feeding joint and the sending joint under the elastic force of the telescopic spring, and when a collision occurs, the sleeve and the movable rod weaken the collision force through the telescopic spring, so that the collision force is reduced when it is transmitted to the clamping plate, so that the feeding joint and the sending joint are effectively protected.

[0020] 2. Based on the first beneficial effect, by setting up a movable component, the support rod is fixed to the four sides of the support plate by using fixing nuts, and the support rod is located outside the suspension expansion tube. The suspension expansion tube can be moved by the support rod, and the support rod can also protect the outside of the suspension expansion tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is the main view of the utility model;

[0023] Figure 2 This is a structural diagram of the hanger body of the utility model;

[0024] Figure 3 This is a structural diagram of the protective component of the utility model;

[0025] Figure 4 This is a structural diagram of the active components of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 11. Suspension expansion tube; 12. Delivery joint; 13. Delivery joint; 21. Fixed plate; 22. Casing; 23. Movable rod; 24. First limit block; 25. Second limit block; 26. Telescopic spring; 27. Clamping plate; 31. Support plate; 32. Through hole; 33. Support rod; 34. Fixing nut. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0032] See also Figure 1-3 As shown, this embodiment is an expandable hanger for cementing, comprising:

[0033] The hanger body includes an inlet joint 12 and an outlet joint 13;

[0034] The protection assembly includes a fixed plate 21, a sleeve 22, a movable rod 23, a first limit block 24, a second limit block 25, a telescopic spring 26 and a clamping plate 27;

[0035] The fixed plate 21 is placed at the outer end of the feeding joint 12 and the feeding joint 13, the sleeve 22 is fixedly connected to the inner side of the fixed plate 21, the movable rod 23 passes through the center of the sleeve 22 and extends outward, the first limit block 24 is fixedly connected to one end of the movable rod 23, the second limit block 25 is fixedly connected to the other end of the movable rod 23, the telescopic spring 26 is fixedly connected to the inner side of the first limit block 24, and the clamping plate 27 is sleeved on the outer surface of the second limit block 25;

[0036] The fixed plate 21 is used to block the outer ends of the feeding joint 12 and the feeding joint 13, the sleeve 22 is used to support the movable rod 23, the movable rod 23 is used to support the first limit block 24 and the second limit block 25, the first limit block 24 is used to support the telescopic spring 26, the second limit block 25 is used to drive the clamping plate 27 to move, the telescopic spring 26 is used to reset the first limit block 24, and the clamping plate 27 is used to clamp the outer sides of the feeding joint 12 and the feeding joint 13;

[0037] The hanger body also includes a suspension expansion tube 11;

[0038] The delivery joint 12 is fixedly connected to one end of the suspension expansion pipe 11, and the delivery joint 13 is fixedly connected to the other end of the suspension expansion pipe 11;

[0039] The other end of the telescopic spring 26 is fixedly connected to the outer surface of the sleeve 22, and the first limit block 24 is located outside the sleeve 22;

[0040] When the first limit block 24 moves outward, it can drive the telescopic spring 26 to stretch outward to generate elastic force;

[0041] The clamping plate 27 is an arc-shaped structure, and the inner side of the clamping plate 27 is respectively in contact with the outer surface of the feeding connector 12 and the feeding connector 13;

[0042] When the first limiting block 24 moves outward, the first limiting block 24 drives the second limiting block 25 to move outward through the movable rod 23, and the second limiting block 25 drives the clamping plate 27 to move outward;

[0043] Working principle: When it is necessary to protect the input joint 12 and the output joint 13, an outward force is applied to the first limit block 24 to move the first limit block 24 outward, and the outward movement of the first limit block 24 drives the telescopic spring 26 to stretch, and drives the movable rod 23 to move outward, and the outward movement of the movable rod 23 drives the second limit block 25 to move outward, and the movement of the second limit block 25 drives the clamping plate 27 to move outward, and then the fixed plate 21 is moved to drive the sleeve 22 and the clamping plate 27 to move to the outer end position of the input joint 12 and the output joint 13, and the force applied to the first limit block 24 is stopped. Under the elastic force of the telescopic spring 26, the first limit block 2 4 moves inward, and drives the clamping plate 27 to move inward through the movable rod 23 and the second limit block 25. The clamping plate 27 moves inward to clamp the input joint 12 and the output joint 13. When a collision occurs after the input joint 12 and the output joint 13 are clamped, the fixed plate 21 and the sleeve 22 move and drive the clamping plate 27 to move. The movement of the clamping plate 27 drives the telescopic springs 26 on both sides to compress or stretch. At this time, the telescopic springs 26 can weaken the force of the collision, thereby weakening the force applied by the clamping plate 27 to the input joint 12 and the output joint 13, thereby achieving protection of the input joint 12 and the output joint 13.

[0044] See also Figure 4 As shown, this embodiment is based on the above embodiment and also includes:

[0045] The movable assembly includes a support plate 31, a through hole 32, a support rod 33 and a fixing nut 34;

[0046] The support plate 31 is fixedly connected to the outer end of the sleeve 22. The through holes 32 are formed around the outer end of the support plate 31. The support rod 33 extends outward through the through holes 32. The fixing nuts 34 are threadedly connected to the outer surfaces of both ends of the support rod 33.

[0047] The support plate 31 is used to support the support rod 33, the through hole 32 is used to place the support rod 33, the support rod 33 is used to support and move the suspension expansion tube 11, and the fixing nut 34 is used to fix the support rod 33;

[0048] The outer surfaces of both ends of the support rod 33 have a threaded structure relative to the fixing nut 34, and the support rod 33 is located outside the suspension expansion tube 11;

[0049] The fixing nut 34 can be moved at both ends of the support rod 33 through a threaded structure. When the fixing nut 34 moves to fit the outer side of the support plate 31, the support rod 33 can be fixed.

[0050] Working principle: By placing the support rod 33 inside the through hole 32 and using the fixing nut 34 to fix the support rod 33 on the inner side of the support plate 31, the support rod 33 is fixed to the outer position of the suspension expansion tube 11. At this time, by applying a moving force to the support rod 33, the suspension expansion tube 11 can be driven to move, and when the suspension expansion tube 11 falls, the support rod 33 contacts the ground, so that the suspension expansion tube 11 will not contact the ground, and the suspension expansion tube 11 can be protected.

[0051] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An expandable hanger for cementing, characterized in that: include: A hanger body, the hanger body comprising an inlet joint (12) and an outlet joint (13); A protection assembly, comprising a fixed plate (21), a sleeve (22), a movable rod (23), a first limiting block (24), a second limiting block (25), a telescopic spring (26) and a clamping plate (27); The fixed plate (21) is placed at the outer end of the feeding joint (12) and the feeding joint (13), the sleeve (22) is fixedly connected to the inner side of the fixed plate (21), the movable rod (23) passes through the center of the inner side of the sleeve (22) and extends outward, the first limit block (24) is fixedly connected to one end of the movable rod (23), the second limit block (25) is fixedly connected to the other end of the movable rod (23), the telescopic spring (26) is fixedly connected to the inner side of the first limit block (24), and the clamping plate (27) is sleeved on the outer surface of the second limit block (25).

2. The expandable hanger for cementing according to claim 1, characterized in that: The hanger body also includes a suspension expansion tube (11); The delivery joint (12) is fixedly connected to one end of the suspension expansion pipe (11), and the delivery joint (13) is fixedly connected to the other end of the suspension expansion pipe (11).

3. The expandable hanger for cementing according to claim 1, characterized in that: The other end of the telescopic spring (26) is fixedly connected to the outer surface of the sleeve (22), and the first limit block (24) is located outside the sleeve (22).

4. The expandable hanger for cementing according to claim 1, characterized in that: The clamping plate (27) is an arc-shaped structure, and the inner side surface of the clamping plate (27) is respectively fitted with the outer surface of the feeding joint (12) and the feeding joint (13).

5. The expandable hanger for cementing according to claim 1, characterized in that: It also includes a movable assembly, which includes a support plate (31), a through hole (32), a support rod (33) and a fixing nut (34); The support plate (31) is fixedly connected to the outer end of the sleeve (22), the through hole (32) is opened around the outer end of the support plate (31), the support rod (33) passes through the through hole (32) and extends outward, and the fixing nut (34) is threadedly connected to the outer surface of both ends of the support rod (33).

6. The expandable hanger for cementing according to claim 5, characterized in that: The outer surfaces of both ends of the support rod (33) have threaded structures opened relative to the fixing nut (34), and the support rod (33) is located outside the suspension expansion tube (11).

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