A sucker rod centralizer

Abstract

This application relates to a hydraulic rod centralizer, comprising: a first centralizing part, a second centralizing part, and a centralizing body; the first centralizing part and the second centralizing part are fixedly connected to the centralizing body; the first centralizing part and the second centralizing part are located on the side of the centralizing body; the first centralizing part and the second centralizing part are different; the number of the first centralizing part is one or more; the number of the second centralizing part is one or more. This application provides a hydraulic rod centralizer that, by increasing the contact area between the hydraulic rod centralizer and the oil pipe, enhances the working stability of the hydraulic rod centralizer and ensures the anti-friction effect of the hydraulic rod on the oil pipe. By increasing the area of ​​the oil passage region, the flow efficiency of the oil is improved.

Description

Technical Field

[0001] This application relates to the field of oilfield extraction equipment, and in particular to a rod centralizer. Background Technology

[0002] In oilfield extraction systems, sucker rods are simple equipment, in high demand, and are an important component in the drilling and extraction process. The quality of sucker rods directly affects the oilfield's oil extraction efficiency.

[0003] Because of the high flow rate and large volume of oil in the well, the sucker rod and the centralizer above it are subjected to a large impact pressure. Furthermore, the sucker rod is constantly moving up and down inside the tubing, which causes uneven wear between the rod and the inner wall of the tubing. This eventually leads to the rod becoming thinner and thinner, eventually causing it to break or crack. Utility Model Content

[0004] This application aims to solve at least one of the above-mentioned technical problems by providing a hydraulic rod centralizer.

[0005] The hydraulic rod centralizer provided in this application adopts the following technical solution:

[0006] A hydraulic rod straightener includes: a first straightening part, a second straightening part, and a straightening body; the first straightening part and the second straightening part are fixedly connected to the straightening body; the first straightening part and the second straightening part are located on the side of the straightening body; the first straightening part and the second straightening part are different; the number of the first straightening part is one or more; the number of the second straightening part is one or more.

[0007] Optionally, the width of the side of the second straightening part away from the straightening body is greater than the width of the side of the first straightening part away from the straightening body.

[0008] Furthermore, the width of the second straightening part near the straightening body is narrower than the width of the first straightening part near the straightening body.

[0009] Furthermore, the width of the side of the first straightening part closer to the straightening body is equal to the width of the side of the first straightening part farther from the straightening body.

[0010] Furthermore, the width of the side of the first straightening part away from the straightening body is A, and A is 14.24 mm.

[0011] Optionally, the side of the second straightening part away from the straightening body is arc-shaped, and the side of the first straightening part away from the straightening body is arc-shaped.

[0012] Optionally, the hydraulic rod stabilizer is injection molded onto the hydraulic rod.

[0013] Optionally, the connection between the first straightening part and the straightening body is a rounded transition; the connection between the second straightening part and the straightening body is a rounded transition.

[0014] Optionally, the hydraulic rod centralizer is made of polyetheretherketone (PEEK).

[0015] Optionally, the oil rod straightener further includes a guide portion, which is fixedly connected to the straightener body and is located on the front and back of the straightener body.

[0016] In summary, this application provides a hydraulic rod centralizer. By increasing the contact area between the centralizer and the oil pipe, the working stability of the centralizer can be enhanced, ensuring the anti-wear effect of the hydraulic rod on the oil pipe. Increasing the area of ​​the oil passage enhances the flow efficiency of the oil. The design of the first centralizing part ensures that the centralizer can still function normally even if the second centralizing part fails, increasing the working stability of the centralizer. The arc transition design allows for smoother oil flow and further increases the flow area. It also reduces the impact load of the oil on the first and second centralizing parts, reducing wear and providing good protection for both parts. It further reduces stress concentration. The arc design facilitates close contact with the oil pipe, improving the tightness between the centralizer and the oil pipe and enhancing the anti-wear effect. By integrally injection molding the centralizer onto the hydraulic rod, an overall fixing effect is achieved, enhancing anti-wear performance, simplifying the structure, facilitating installation and use, and reducing production costs. It also enhances the bonding strength between the hydraulic rod stabilizer and the hydraulic rod, reducing the probability of the hydraulic rod stabilizer shifting vertically, effectively ensuring the stabilizer's efficient operation and improving its anti-wear effect. Furthermore, it provides bidirectional protection for the hydraulic pipes and hydraulic rod, extending their service life. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the hydraulic rod centralizer according to an embodiment of this application;

[0018] Figure 2 yes Figure 1 The diagram shows the axial view of the hydraulic rod centralizer.

[0019] Figure 3 yes Figure 1 The diagram shows the first working schematic of the hydraulic rod centralizer;

[0020] Figure 4 yes Figure 1 The diagram shows the second working schematic of the hydraulic rod centralizer;

[0021] Figure 5 yes Figure 4The cross-sectional view at point A shown.

[0022] Explanation of reference numerals in the attached drawings: 10, hydraulic rod centralizer; 11, first centralizer; 12, second centralizer; 13, centralizer body; 14, guide; 15, oil passage area; 20, hydraulic rod; 30, oil pipe. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0026] This application discloses a hydraulic rod centralizer 10. See also... Figure 1-5A hydraulic rod straightener 10 may include a first straightening part 11, a second straightening part 12, a straightening body 13, and a guide part 14. The first straightening part 11, the second straightening part 12, and the guide part 14 are fixedly connected to the straightening body 13. The first straightening part 11 and the second straightening part 12 are located on the side of the straightening body 13, and the guide part 14 is located on the front and back of the straightening body 13.

[0027] The first straightening part 11 differs from the second straightening part 12. Specifically, the width of the side of the second straightening part 12 away from the straightening body 13 is greater than the width of the side of the first straightening part 11 away from the straightening body 13. The width of the side of the second straightening part 12 near the straightening body 13 is narrower than the width of the side of the first straightening part 11 near the straightening body 13.

[0028] The first straightening section 11 and the second straightening section 12 define the oil passage area 15. When the oil rod 20 is working, the oil passes through the oil passage area 15.

[0029] It is understandable that by making the width of the side of the second straightening part 12 away from the straightening body 13 greater than the width of the side of the first straightening part 11 away from the straightening body 13, the contact area between the oil rod straightener 10 and the oil pipe 30 can be increased, which can enhance the working stability of the oil rod straightener 10 and ensure the anti-wear effect of the oil rod 20 on the oil pipe 30.

[0030] By making the width of the side of the second straightening section 12 closest to the straightening body 13 narrower than the width of the side of the first straightening section 11 closest to the straightening body 13, the area of ​​the oil passage region 15 can be increased, thereby enhancing the oil flow efficiency.

[0031] The width of the side of the first straightening part 11 closest to the straightening body 13 is equal to the width of the side furthest from the straightening body 13. Specifically, the width of the side of the first straightening part 11 furthest from the straightening body 13 is A. A can be 14.24 mm.

[0032] Understandably, because the width of the side of the second straightening part 12 closest to the straightening body 13 is narrower than the width of the side of the first straightening part 11 closest to the straightening body 13, the side of the second straightening part 12 closest to the straightening body 13 is prone to wear and even breakage under the impact of oil during long-term operation. The design of the first straightening part 11 ensures that the hydraulic rod straightener 10 can still operate normally even if the second straightening part 12 fails, increasing the operational stability of the hydraulic rod straightener 10.

[0033] The connection between the first straightening part 11 and the straightening body 13 is a rounded transition. The connection between the second straightening part 12 and the straightening body 13 is also a rounded transition.

[0034] Understandably, the rounded transition design allows for smoother oil flow and further increases the flow area. It also reduces the impact load of the oil on the first and second straightening sections 11 and 12, reducing wear and providing good protection for them. Furthermore, it further reduces stress concentration.

[0035] The side of the second straightening part 12 that is away from the straightening body 13 is arc-shaped, and the side of the first straightening part 11 that is away from the straightening body 13 is arc-shaped.

[0036] Understandably, the arc-shaped design facilitates a close fit with the oil pipe 30, improving the tightness between the oil rod stabilizer 10 and the oil pipe 30, and enhancing the anti-wear effect of the oil rod stabilizer 10.

[0037] The hydraulic rod centralizer 10 is integrally injection molded onto the hydraulic rod 20. This provides overall fixation, enhances anti-wear performance, simplifies the structure, facilitates installation and use, and reduces production costs. It also improves the bonding strength between the centralizer 10 and the hydraulic rod 20, reducing the probability of vertical movement of the centralizer 10 and effectively ensuring its operation, thus enhancing its anti-wear performance. Furthermore, it provides bidirectional protection for the hydraulic pipe 30 and the hydraulic rod 20, extending their service life.

[0038] Meanwhile, the design of the first straightening part 11, the second straightening part 12, and the guide part 14 can facilitate the demolding and molding of the oil rod straightener 10, and improve the molding rate of the oil rod straightener 10. The guide part 14 can also further strengthen the bonding strength between the oil rod straightener 10 and the oil rod 20.

[0039] The hydraulic rod centralizer 10 can be made of a material with a low coefficient of thermal expansion, wear resistance, and corrosion resistance. Specifically, the hydraulic rod centralizer 10 can be made of polyetheretherketone (PEEK).

[0040] Understandably, polyetheretherketone (PEEK) exhibits minimal expansion under high-temperature heating, preventing deformation of the rod centralizer 10 and ensuring its performance stability. PEEK also boasts advantages such as high wear resistance, minimal temperature variation, and chemical stability. Furthermore, PEEK material exhibits high corrosion resistance, effectively addressing corrosive media in well fluids and preventing corrosion of the rod 20.

[0041] This application provides a hydraulic rod centralizer 10, which features wear resistance, stability, and high efficiency. By increasing the contact area between the hydraulic rod centralizer 10 and the oil pipe 30, the working stability of the hydraulic rod centralizer 10 can be enhanced, ensuring the anti-wear effect of the hydraulic rod 20 on the oil pipe 30. By increasing the area of ​​the oil passage area 15, the flow efficiency of the oil is improved. The design of the first centralizing part 11 allows the hydraulic rod centralizer 10 to continue to work normally even if the second centralizing part 12 fails, increasing the working stability of the hydraulic rod centralizer 10. The arc transition design allows for smoother oil flow and further increases the flow area. It also reduces the impact load of the oil on the first centralizing part 11 and the second centralizing part 12, reducing wear and providing good protection for the first centralizing part 11 and the second centralizing part 12. It can also further reduce stress concentration. The arc-shaped design facilitates a close fit with the oil pipe 30, enhancing the tightness between the hydraulic rod centralizer 10 and the oil pipe 30, and increasing the anti-wear effect of the hydraulic rod centralizer 10. By integrally injection molding the hydraulic rod centralizer 10 onto the hydraulic rod 20, a unified fixation effect is achieved, enhancing anti-wear performance, simplifying the structure, facilitating installation and use, and reducing production costs. Simultaneously, it improves the bonding strength between the hydraulic rod centralizer 10 and the hydraulic rod 20, reducing the probability of vertical movement of the hydraulic rod centralizer 10, effectively ensuring the centralizer's efficient operation and improving its anti-wear effect. It also provides bidirectional protection for the oil pipe 30 and the hydraulic rod 20, extending their service life.

[0042] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A hydraulic rod centralizer, characterized in that: The oil rod straightener (10) includes: a first straightening part (11), a second straightening part (12), and a straightening body (13); the first straightening part (11) and the second straightening part (12) are fixedly connected to the straightening body (13); the first straightening part (11) and the second straightening part (12) are located on the side of the straightening body (13); the first straightening part (11) and the second straightening part (12) are different; the number of the first straightening part (11) is one or more; the number of the second straightening part (12) is one or more.

2. The hydraulic rod centralizer according to claim 1, characterized in that, The width of the side of the second straightening part (12) away from the straightening body (13) is greater than the width of the side of the first straightening part (11) away from the straightening body (13).

3. The hydraulic rod centralizer according to claim 2, characterized in that: The width of the second straightening part (12) near the straightening body (13) is narrower than the width of the first straightening part (11) near the straightening body (13).

4. The hydraulic rod centralizer according to claim 3, characterized in that: The width of the side of the first straightening part (11) closest to the straightening body (13) is equal to the width of the side of the first straightening part (11) furthest from the straightening body (13).

5. The hydraulic rod centralizer according to claim 2, characterized in that: The width of the side of the first straightening part (11) away from the straightening body (13) is A, and A is 14.24 mm.

6. The hydraulic rod centralizer according to claim 1, characterized in that: The side of the second straightening part (12) away from the straightening body (13) is arc-shaped, and the side of the first straightening part (11) away from the straightening body (13) is arc-shaped.

7. The hydraulic rod centralizer according to claim 1, characterized in that: The hydraulic rod stabilizer (10) is injection molded onto the hydraulic rod (20).

8. The hydraulic rod centralizer according to claim 1, characterized in that: The connection between the first straightening part (11) and the straightening body (13) is a rounded transition; the connection between the second straightening part (12) and the straightening body (13) is a rounded transition.

9. The hydraulic rod centralizer according to claim 1, characterized in that: The hydraulic rod centralizer (10) is made of polyetheretherketone.

10. The hydraulic rod centralizer according to claim 1, characterized in that: The oil rod straightener (10) also includes a guide part (14), which is fixedly connected to the straightener body (13). The guide part (14) is located on the front and back of the straightener body (13).

Images