Integral type double-arch-shaped casing centralizer

Abstract

The utility model belongs to the technical field of casing centralizers, and particularly relates to an integral double-arch casing centralizer which comprises a centralizer body, the centralizer body comprises connecting pipes, a first metal sheet designed in an arch shape is arranged between the upper connecting pipe and the lower connecting pipe, and a second metal sheet is arranged between the upper connecting pipe and the lower connecting pipe. The inner side of the first metal sheet is provided with an arc-shaped second metal sheet, the inner side of the second metal sheet is provided with an adjusting assembly, the outer side of the adjusting assembly is provided with a pulley, and the outer side of the second metal sheet is provided with a protection plate. The centralizer is reasonable in design, simple in structure and convenient to machine, the use functionality of equipment parts can be improved, the overall use strength of the equipment parts can be improved, the use condition of the outer side of the centralizer can be adaptively adjusted according to different pipe fitting conditions so as to adapt to the advancing process, a sleeve can be conveniently and stably fixed, and the service life of the centralizer is prolonged. And normal and stable follow-up work is guaranteed, the possibility of abrasion of the sleeve is reduced, and the use requirement is effectively met.

Description

Technical Field

[0001] The utility model belongs to the technical field of casing centralizers, in particular to an integral double-bow casing centralizer. Background Art

[0002] The casing centralizer is a cementing tool. It is simple to manufacture, beautiful in structure, strong and durable, and has a strong centralizing force. It overcomes the shortcoming of the original welded centralizer that is prone to desoldering. It is a centralizer that can ensure the quality of drilling and cementing.

[0003] Commonly used casing centralizers include elastic centralizers and rigid centralizers. Rigid centralizers can rotate and slide freely on the casing and are typically secured to a specific location using setscrews or retaining rings. Rigid centralizers are the best choice for cementing in vertical wells when casing rotation is required to improve displacement efficiency. They are also the only alternative in deviated and horizontal wells. Elastic centralizers are primarily made of spring steel, resulting in a high degree of deformation, a large maximum expansion diameter, and a high support force after expansion. They can adapt to wellbore diameters of varying degrees and have a small initial maximum outer diameter during lowering, reducing the risk of sticking or obstruction during lowering. However, existing elastic centralizers have a relatively rigid outer wall structure and limited functionality, resulting in a limited range of applications. Furthermore, if the casing is loosened after passing through the centralizer, subsequent work cannot proceed smoothly. Conventional rigid fixing methods can easily cause wear on the casing, affecting its functionality and failing to meet user requirements. Utility Model Content

[0004] In response to the technical problems existing in the use of the above-mentioned casing centralizer, the utility model proposes an integral double-bow casing centralizer with reasonable design, simple structure, convenient processing, and the ability to improve the functionality of equipment components and enhance their overall strength of use. The use of the outer side of the centralizer can be adaptively adjusted according to different pipe conditions to adapt to the travel process, and the casing can be conveniently and stably fixed to ensure that subsequent work is carried out normally and stably, and the possibility of casing wear is reduced, thereby effectively meeting the use requirements.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is an integral double-bow casing centralizer, including a centralizer body, the centralizer body including a connecting pipe, characterized in that a first metal sheet designed in a bow shape is arranged between the upper and lower connecting pipes, a second metal sheet designed in an arc shape is arranged on the inner side of the first metal sheet, an adjustment component is arranged on the inner side of the second metal sheet, a pulley is arranged on the outer side of the adjustment component, and a protective plate is arranged on the outer side of the second metal sheet.

[0006] Preferably, the adjustment assembly includes a fixing rod connected to the second metal sheet and passing through the middle bend of the first metal sheet. The ends of the two fixing rods are provided with adaptation grooves for facilitating the placement of the pulley. A buffer spring is provided on the outer periphery of the fixing rod located between the first metal sheet and the second metal sheet.

[0007] Preferably, the protective plate is designed in a bad arc shape, a mounting groove is opened on the outer side of the protective plate, a semicircular snap-in groove is opened on the short side of the mounting groove, and a snap-in strip is provided on the outer side of the second metal sheet and is adapted to the snap-in groove.

[0008] Preferably, a ball bearing is provided in the curved portion of the first metal sheet.

[0009] Compared with the prior art, the advantages and positive effects of the present invention are:

[0010] 1. The utility model provides an integrated double-bow casing centralizer. The first metal sheet is designed in a bow shape, and its upper and lower parts can be deformed according to actual working conditions to complete the positioning of the casing workpiece during the movement of the centralizer body, ensuring its stability during transportation. In addition, with the help of the second metal sheet and the protective block, it can be attached to the outside of the casing workpiece, to a certain extent protecting and supporting the casing workpiece, reducing the possibility of damage to the casing workpiece, and meeting the use requirements. The adjustment component and the ball bearing are provided. The adjustment component can adaptively adjust the position of the pulley under the action of the casing workpiece and cooperate with the ball bearing to improve the smoothness of the centralizer body during use and improve the working process. The device has a reasonable design, simple structure, and convenient processing. It can improve the functionality of the equipment components and enhance its overall use strength. It can also adaptively adjust the use of the outer side of the centralizer according to different pipe fittings to adapt to the travel process, and can conveniently and stably fix the casing, ensuring the normal and stable subsequent work, reducing the possibility of casing wear, and effectively meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0012] Figure 1 It is a structural schematic diagram of an integral double-bow casing centralizer;

[0013] Figure 2 This is a structural front view of an integral double-bow casing centralizer;

[0014] Figure 3 This is a partial exploded schematic diagram of the structure of an integral double-bow casing centralizer;

[0015] In the above figures, 1. connecting pipe; 2. first metal sheet; 21. snap-fit ​​strip; 3. second metal sheet; 4. adjustment assembly; 41. fixing rod; 411. adapter groove; 42. buffer spring; 5. pulley; 6. protective plate; 61. mounting groove; 62. snap-fit ​​groove; 7. ball bearing. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0017] 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 than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Examples, such as Figures 1 to 3As shown, an integral double-bow casing centralizer includes a centralizer body, which is sleeved on the outside of the casing to ensure the stability of the casing under construction conditions such as water wells, and provides convenient conditions for its smooth input. In order to realize the straightening and limiting of the casing during transportation and ensure its smoothness, the centralizer body includes a connecting pipe 1, and a first metal sheet 2 designed in a bow shape is provided between the upper and lower connecting pipes 1, and a second metal sheet 3 designed in an arc shape is provided on the inner side of the first metal sheet 2. The first metal sheet 2 and the second metal sheet 3 are similar to the spring sheets in the prior art and have certain elastic properties to adapt to the deformation of the working environment, thereby ensuring the stability of the casing workpiece. When setting up, the two ends of the second metal sheet 3 are welded to the inner side of the first metal sheet 2 to improve the connection stability between the equipment components. The second metal sheet 3 The outer side of the adjusting assembly 4 is provided with an adjusting component 4, the outer side of the adjusting component 4 is provided with a pulley 5, and the outer side of the second metal sheet 3 is provided with a protective plate 6. The specific description is as follows: when in use, the sleeve is first inserted from the connecting pipe 1, and the sleeve is led out from the middle position of the protective plate 6. Under the action of the sleeve's own size, it will press the protective plate 6 outward, the second metal sheet 3 is deformed, and the adjusting component 4 is driven to extend outward. At this time, the pulley 5 moves outward a certain distance. When the sleeve workpiece and the centralizer body are transported to the working environment together, the first metal sheet 2 is deformed by the internal pressure of the inner wall of the working environment, which can correct the position of the workpiece to a certain extent and ensure the stability of its position. The balls 7 on the deformed second metal sheet 3 will be flush with the outer periphery of the extended pulley 5, which plays a role in promoting travel, ensuring smoothness and meeting the use requirements.

[0019] In the above process: through the first metal sheet 2 designed in a bow shape, its upper and lower parts can be deformed according to the actual working conditions to complete the limitation of the casing workpiece during the movement of the centralizer body, ensuring its stability during the transportation process, and with the help of the second metal sheet 3 and the protective block, it can be fitted on the outside of the casing workpiece, to a certain extent, protect and support the casing workpiece, reduce the possibility of damage, and meet the use requirements; using the established adjustment component 4 and ball 7, wherein the adjustment component 4 can adaptively adjust the position of the pulley 5 under the action of the casing workpiece, and cooperate with the ball 7 to improve the smoothness of the use of the centralizer body and improve the working process; the device has a reasonable design, simple structure, easy processing, and can improve the functionality of the equipment components and enhance its overall use strength. It can also adaptively adjust the use of the outer side of the centralizer according to different pipe fittings to adapt to the travel process, and can conveniently and stably fix the casing to ensure the normal and stable progress of subsequent work, reduce the possibility of casing wear, and effectively meet the use requirements.

[0020] In order to ensure that the device has good functionality, the adjustment component 4 includes a fixing rod 41 connected to the second metal sheet 3 and passing through the middle bend of the first metal sheet 2. The ends of the two fixing rods 41 are provided with an adapter groove 411 for facilitating the placement of the pulley 5. The outer periphery of the fixing rod 41 located between the first metal sheet 2 and the second metal sheet 3 is provided with a buffer spring 42. Specifically, the fixing rod 41 is connected to the inner side of the first metal sheet 2, and a limiting plate is set on the outer periphery of the fixing rod 41 away from the penetration point of the first metal sheet 2 to limit the position of the second metal sheet 3. When the sleeve workpiece is inserted through the connecting pipe 1 After entering the stabilizer body, considering the size of the outer periphery of the sleeve workpiece, it will press the position of the protective block outward and act on the second metal sheet 3 to cause it to deform. During this process, the protective block always fits the outer periphery of the sleeve workpiece, supporting and limiting its position. Furthermore, the buffer spring 42 is compressed, causing the fixed rod 41 to move outward, which has a certain degree of buffering effect, especially for different working conditions. After the fixed rod 41 moves outward, the pulley 5 will protrude a part, which can cooperate with the ball 7 on the first metal sheet 2 to ensure the smoothness of the workpiece during movement and improve the work progress.

[0021] In order to complete the protection of the sleeve component, the protective plate 6 is designed in an inferior arc shape, and a mounting groove 61 is provided on the outer side of the protective plate 6. A semicircular clamping groove 62 is provided on the short side of the mounting groove 61. A clamping strip 21 is provided on the outer side of the second metal sheet 3, and is adapted to the clamping groove 62. According to different usage requirements, a protective plate 6 of appropriate specifications is selected, and then its mounting groove 61 is matched with the second metal sheet 3. Of course, the mounting groove 61 is designed in an arc shape, that is, its inner side can be fitted on the second metal sheet 3, and then the clamping groove 62 is clamped correspondingly to the clamping strip 21, thereby completing The installation of the protective plate 6 greatly improves the functionality of the device. It is specifically described as follows: for the protective plate 6, it can be selected according to workpieces of different specifications and sizes, especially the protective plate 6 with a suitable inner diameter can be selected, so that the protective plate 6 can always fit on the outer periphery of the workpiece to a certain extent, and with the help of the casing workpiece passing through the stabilizer body, it will act on the second metal sheet 3, causing it to deform, and drive the fixed rod 41 and the pulley 5 to extend outward. At this time, the outer periphery of the pulley 5 is in contact with the geological inner wall, ensuring the smoothness of the casing workpiece during movement and ensuring usage requirements.

[0022] In order to further improve the rationality of the device, a ball 7 is provided in the bending part of the first metal sheet 2. When the stabilizer body is installed on the sleeve and as the sleeve enters the construction environment, the first metal sheet 2 and the second metal sheet 3 are adaptively deformed according to the specifications of the sleeve. The ball 7 can cooperate with the pulley 5 to a certain extent, and play a promoting role in the movement of the workpiece, thereby improving its smoothness and meeting the use requirements.

[0023] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An integral double-bow casing centralizer, comprising a centralizer body, the centralizer body including a connecting pipe, characterized in that: A first metal sheet designed in a bow shape is arranged between the upper and lower connecting pipes, a second metal sheet designed in an arc shape is arranged on the inner side of the first metal sheet, an adjustment component is arranged on the inner side of the second metal sheet, a pulley is arranged on the outer side of the adjustment component, and a protective plate is arranged on the outer side of the second metal sheet.

2. The integrated double-bow casing centralizer according to claim 1, characterized in that: The adjustment assembly includes a fixing rod connected to the second metal sheet and passing through the middle bend of the first metal sheet. The ends of the two fixing rods are provided with adaptation grooves for facilitating the placement of the pulley. A buffer spring is provided on the outer periphery of the fixing rod located between the first metal sheet and the second metal sheet.

3. The integrated double-bow casing centralizer according to claim 2, characterized in that: The protective plate is designed in a bad arc shape, and a mounting groove is opened inside the outer side of the protective plate. A semicircular clip groove is opened inside the short side of the mounting groove. A clip strip is set on the outer side of the second metal sheet and is adapted to the clip groove.

4. The integrated double-bow casing centralizer according to claim 3, characterized in that: A ball bearing is arranged in the curved portion of the first metal sheet.

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