Anti-wear centralizing lateral load pressure divider for sucker rod

Abstract

The utility model relates to the technical field of oil extraction equipment, and provides an anti-wear centralizing lateral load pressure divider for a sucker rod, which comprises a barrel, connecting parts are arranged at two ends of the barrel and used for connecting the sucker rod, and at least two support blocks are arranged outside the barrel and circumferentially arranged on the barrel. By means of the technical scheme, the problem that in the prior art, a sucker rod collides or rubs with the inner wall of an oil pipe in the sliding process in the oil pipe, and consequently the sucker rod or the oil pipe is abraded is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production equipment, in particular to a wear-resistant and straightening lateral load divider for a sucker rod. Background Art

[0002] The sucker rod and the sucker pipe are two indispensable key components in oil extraction. They play a vital role in the coordinated use of the scene of the pumping well, and are mainly responsible for pumping underground crude oil from the bottom of the well to the ground. The sucker pipe is mainly used as a passage for the oil well, running through the wellbore, from the wellhead to the oil layer. It protects the well wall and serves as a conduit for the sucker rod and the rising liquid, including the passage of crude oil, water and gas. One end of the oil rod is connected to the plunger of the oil pump. Driven by power, the sucker rod moves downward along the oil pipe, slides inside the oil pipe, and drives the plunger connected to it downward. When the plunger moves downward, the volume inside the pump barrel increases, forming a negative pressure, and the crude oil and water in the oil layer at the bottom of the well flow into the pump barrel under the action of the pressure difference. When the sucker rod slides in the oil pipe, it will collide or rub with the inner wall of the oil pipe. Utility Model Content

[0003] The utility model provides a sucker rod anti-wear straightening lateral load divider, which solves the problem in the related art that the sucker rod may collide or rub with the inner wall of the oil pipe during sliding in the oil pipe, causing wear of the oil rod or the oil pipe.

[0004] The technical solution of the utility model is as follows:

[0005] The anti-wear and straightening side load divider for the sucker rod is used to straighten the sucker rod in the oil pipe, comprising:

[0006] The cylinder has connecting parts at both ends, and the connecting parts are used to connect the oil rod.

[0007] A support block is arranged outside the cylinder, and there are at least two support blocks which are arranged circumferentially on the cylinder.

[0008] As a further technical solution, the connecting portion is an internal thread.

[0009] As a further technical solution, the support block is hingedly arranged on the cylinder.

[0010] As a further technical solution, the hinge axis of the support block is parallel to the axial direction of the cylinder.

[0011] As a further technical solution, the support block has an arc-shaped abutting surface, and the arc-shaped abutting surface is used to abut against the inner wall of the oil pipe.

[0012] As a further technical solution, the support block is a strip-shaped support block.

[0013] As a further technical solution, the cylinder has a limiting portion, both sides of the support block have the limiting portion, and the support block has a limited portion, which is driven by the support block to rotate and abuts against the limiting portion to limit the swing angle of the support block.

[0014] As a further technical solution, the cylinder has a through hole, and the connecting part is arranged in the through hole.

[0015] As a further technical solution, both ends of the through hole have necked portions.

[0016] As a further technical solution, the support block has narrowed portions on both sides, and the narrowed portions are located between the cylinder and the arc-shaped abutting surface.

[0017] The working principle and beneficial effects of the utility model are:

[0018] In the utility model, a cylinder is set as the basic structure of the device, and the two ends are designed to be equipped with special connecting parts, which are convenient and quick to reliably connect with the two ends of the oil rod, ensure the fixation of the device, and stabilize the central position of the oil rod in the oil pipe. On the outside of the cylinder, at least two support blocks arranged in a circle are evenly arranged. The layout of the support blocks not only considers the stable support of the oil rod in terms of quantity, but also optimizes the space occupied in the oil pipe. The distribution of the support blocks ensures that the oil rod has sufficient support whether it moves up and down in the oil pipe, prevents deflection and touches the oil pipe wall, and reduces wear. The specific working method is as follows: first, the cylinder is connected to the two oil rods at both ends through the connecting parts at both ends to ensure that the device is firmly fixed. When the oil rod moves in the oil pipe, the support blocks play a key supporting role. They are like tracks, hugging the inner wall of the oil pipe, allowing the oil rod to slide in the middle, preventing deviation, reducing direct friction with the oil pipe wall, and improving the service life of the oil rod. Reduce maintenance frequency. If the oil pipe is deformed due to pressure changes or oil layer geology, the layout of multiple support blocks can adaptively disperse the force, keep the oil rod in the middle, and reduce deflection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0022] In the figure: cylinder 1, connecting part 101, supporting block 2, arc-shaped abutting surface 201, limiting part 104, limited part 105, through hole 102, necking part 103, narrowing part 202. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0024] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0025] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] Reference Figure 1~Figure 2 The embodiment of the utility model proposes a sucker rod anti-wear straightening lateral load divider for straightening the oil rod in the oil pipe, comprising a cylinder 1, both ends of the cylinder 1 have connecting parts 101, the connecting parts 101 are used to connect the oil rod, and support blocks 2 are arranged outside the cylinder 1. There are at least two support blocks 2 and they are arranged circumferentially on the cylinder 1.

[0028] In this embodiment, the device is applied to inclined wells. When the oil rod is moving in the oil pipe, the oil rod body on the lower side will rub against the inner wall of the oil pipe. In the long-term use process, this friction will greatly shorten the service life of the oil rod, and will also cause the problem of oil rod accumulation due to excessive local friction. This scheme sets the cylinder 1 as the basic structure of the device, and designs special connection parts 101 at both ends to facilitate and quickly connect with the two ends of the oil rod reliably, ensure the device is fixed, and stabilize the center position of the oil rod in the oil pipe. On the outside of the cylinder 1, at least two support blocks 2 arranged in a circle are evenly arranged. The layout of the support blocks 2 not only takes into account the stable support of the oil rod in terms of quantity, but also optimizes the space occupied in the oil pipe. The distribution of the support blocks 2 ensures that the oil rod has sufficient support whether it moves up and down in the oil pipe, prevents it from deflecting and touching the wall of the oil pipe, and reduces wear. The inclined cylinder and the oil pipe are in approximately line contact, which will cause greater wear. At least two circumferentially arranged support blocks 2 can make at least two support blocks contact the inner wall of the oil pipe at the same time, decomposing the pressure load and friction force, extending the practical life of the device and making the travel process of the oil rod smoother.

[0029] The specific working method is as follows: first, the cylinder 1 is connected to the two oil rods at both ends through the connecting parts 101 at both ends to ensure that the device is firmly fixed. When the oil rod moves in the oil pipe, the support blocks 2 play a key supporting role. They are like tracks, hugging the inner wall of the oil pipe, allowing the oil rod to slide in the middle to prevent deviation, reduce direct friction with the oil pipe wall, increase the service life of the oil rod, and reduce the maintenance frequency. If the oil pipe changes due to pressure changes or oil layer geological deformation, the layout of multiple support blocks 2 can adaptively disperse the force, keep the oil rod centered, and reduce deflection. In this embodiment, the support blocks 2 are three support blocks 2 arranged circumferentially as an example. During the upward movement of the oil rod, two adjacent support blocks 2 always maintain abutment with the inner wall of the oil pipe. The two adjacent support blocks 2 always abut against the oil pipe to disperse the pressure load between the oil rod and the oil pipe. During the downward movement of the oil rod, there is no or only a small pressure load between the oil rod and the oil pipe, so rotation will occur. The combination of different adjacent support blocks 2 alternately bears the lateral load in turn. During the repeated lifting and lowering of the oil rod, each support block alternately bears the load in turn, always maintaining the two support blocks 2 abutting against the inner wall of the oil pipe to maintain a stable support effect on the oil rod. At the same time, the synchronous or alternating use of three or more support blocks 2 can also achieve the effect of extending the service life of the device. The anti-wear and straightening lateral load divider of the sucker rod in this embodiment effectively solves the problem of the oil rod's deflection in the oil pipe through the exquisite arrangement of the cylinder 1 and the support blocks 2, improves the pumping efficiency, reduces wear, and shortens the operation cycle. It is an optimal solution for the maintenance of oil pumping equipment.

[0030] Furthermore, the connection portion 101 is an internal thread.

[0031] In this embodiment, a threaded design is adopted in the connection parts 101 at both ends of the barrel 1 of the sucker rod anti-wear straightening lateral load divider. This improvement makes the connection with the oil rod more firm and stable. Through the tight engagement of the threads, mechanical locking is achieved to prevent vibration in the oil pipe or accidental cracking and disengagement that may occur during the pumping process. The threaded design provides a reliable physical locking method to ensure that there is no sliding between the oil rod and the straightening device. Even in long-term operation and high-frequency reciprocating motion, the thread still maintains the center position of the oil rod and reduces the shaking in the oil pipe. At the same time, the threaded connection is convenient for on-site installation and disassembly. No complicated tools are required. Assembly can be completed by rotating, which improves work efficiency, reduces the time cost during maintenance and replacement, and facilitates on-site operators. The standardized design of the thread makes it easy to match the device with oil rods of various specifications, improves the versatility of the device, adapts to different oil well sites, and expands the scope of application.

[0032] Furthermore, the support block 2 is hingedly arranged on the cylinder body 1 .

[0033] In this embodiment, the support block 2 is not directly fixed to the cylinder 1, but is mounted on the cylinder 1 by means of a hinge. This means that each support block 2 can have a certain degree of freedom of adjustment range to adapt to subtle changes inside the oil pipe or dynamic adjustments during the movement of the oil rod. The hinged support block 2 design enables the device to fine-tune the angle according to the internal conditions of the oil pipe. The support block 2 can automatically adjust the slight deflection generated during the movement of the oil rod to maintain the optimal support state, reduce wear, and improve the stability of the oil rod operation. When the support block 2 needs to be inspected or replaced, the hinged design facilitates the removal of the support block 2 without the need to remove the entire device, thereby improving maintenance efficiency, reducing maintenance costs, and alleviating the operating burden. The hinged structure allows the support block 2 to be adjusted more flexibly during installation, and the optimal position can be adjusted according to the size of the oil pipe or the actual condition of the oil rod, ensuring the personalized installation efficiency and effect of the device and optimizing the overall layout. Since the device is applied to inclined wells, the oil rod will rotate to a certain extent in the oil pipe, and the side of the support block 2 located at the bottom will produce certain wear in the process of friction with the inner wall of the oil pipe, causing the movement of the oil rod to deviate to a certain extent, affecting the normal working state. The swinging support block 2 can adjust itself so that the chord (chord on the pumping pipe) of the friction contact surface is perpendicular to the radius of the oil pipe. Therefore, the surface can still automatically fit after wear. Extend the service life of the oil rod and the oil pipe, and keep the working stability of the device.

[0034] Furthermore, the hinge axis of the support block 2 is parallel to the axial direction of the cylinder 1 .

[0035] In this embodiment, the support block 2 is designed with parallel axes. No matter how the oil rod moves up and down, the support block 2 remains consistent with the axis of the oil rod, effectively preventing the oil rod from being skewed, ensuring the linearity of oil pumping, and reducing unnecessary wear. The parallel axes enable the support block 2 to evenly distribute the weight and suction force of the oil rod, avoid local overload, increase the service life of the oil rod and the support block 2, and reduce the maintenance frequency. The parallelism in the design simplifies the installation and adjustment of the support block 2, ensures accuracy during installation, eliminates the need for complex alignment, improves operating efficiency, and reduces on-site operation time. This embodiment not only improves the operational stability of the device, but also ensures the linear motion of the oil rod, optimizes the force distribution, reduces the maintenance burden, and improves the overall practicality and service life of the device.

[0036] Furthermore, the support block 2 has an arcuate abutting surface 201, and the arcuate abutting surface 201 is used to abut against the inner wall of the oil pipe.

[0037] In this embodiment, the arc-shaped abutment surface 201 is designed to reduce the direct hard contact between the support block 2 and the oil pipe wall, making the oil rod slide more smoothly when moving, reducing friction, reducing the wear of the oil pipe wall and the loss of the oil rod, and extending the life of the components. The arc-shaped design can naturally guide the oil rod to the center when the oil rod moves, and the abutment surface fits the oil pipe wall to form a natural guide, which helps the oil rod maintain the center linearity, avoids deflection, and improves the stability of the oil rod. The arc-shaped abutment surface 201 reduces direct wear with the oil pipe, protects the oil pipe wall, and ensures the integrity of the oil pipe for long-term use, reduces oil leakage, and ensures the safety of the oil well.

[0038] Furthermore, the support block 2 is a strip-shaped support block.

[0039] In this embodiment, the strip support block reduces the occupation of the internal space of the oil pipe, allowing the oil fluid, gas, etc. to flow more smoothly, reducing the additional pressure on the oil pipe wall, and optimizing the comprehensive operating environment of the oil well. Although it is only a strip design, the support block 2 still provides the necessary lateral support strength to ensure that the oil rod does not deflect during the up and down movement. The stability of the strip block can still disperse the force on the oil rod and reduce local stress concentration. The structure of the strip block is convenient for separate maintenance or replacement. If a block is damaged, only the block needs to be replaced without affecting the others, which improves maintenance efficiency and reduces the downtime of the entire device. This design takes into account both the stability of the oil rod in the oil pipe and the space efficiency inside the oil pipe, optimizes the practicality of the device, and reduces maintenance costs. It is an innovative design thinking for complex oil well operating environments, and improves overall operating efficiency and economy.

[0040] Furthermore, the cylinder 1 has a limiting portion 104, both sides of the support block 2 have limiting portions 104, and the support block 2 has a limited portion 105. After the limited portion 105 is driven to rotate by the support block 2, it abuts against the limiting portion 104 to limit the swing angle of the support block 2.

[0041] In this embodiment, the limit design ensures that the swing angle of the support block 2 is within the set range, prevents excessive swing, stabilizes the angle of the oil rod when it moves in the oil pipe, reduces deflection, and improves the operating efficiency of the oil rod. The interlocking of the limit part 104 and the support block 2 makes the straightening more precise, and can keep the position of the oil rod stable even if the oil pressure in the oil pipe changes or external vibration occurs, reducing unnecessary wear on the oil pipe and protecting the oil rod and the oil pipe. The angle limit reduces the disordered movement of the support block 2, reduces wear, and extends the life of the components. The limit design is also easy to maintain. Once adjustment or replacement is required, the direct operation is simple and the maintenance efficiency is high.

[0042] Furthermore, the cylinder body 1 has a through hole 102 , and the connecting portion 101 is disposed in the through hole 102 .

[0043] In this embodiment, the built-in connection part 101 is directly embedded in the through hole 102, making the connection more stable, reducing the exposed part of the connection part 101, reducing the risk of external force, improving the vibration resistance of the device, and protecting the stability of the oil rod movement. The built-in connection part 101 is easy to maintain. Once inspection or adjustment is required, it can be directly operated on the through hole 102 without disassembling the adjustment device, which simplifies the maintenance process and saves time and cost. The integrated design of the through hole 102 and the connection part 101 saves space, makes the overall device more compact, reduces the space occupied in the oil pipe, optimizes the oil flow, and is environmentally friendly to oil well operations.

[0044] Furthermore, both ends of the through hole 102 have narrowed portions 103 .

[0045] In this embodiment, the constricted portion 103 is at both ends of the through hole 102, which can alleviate the sudden change of pressure inside and outside the oil pipe and reduce direct impact. Especially when the oil rod goes up and down, the pressure in the oil pipe fluctuates, and the constricted portion 103 can slide smoothly, stabilize the fluid, and protect the oil pipe and the oil rod. The constricted portion 103 is designed to prevent large particles of foreign matter from entering the through hole 102, protect the internal sensors or lines, maintain the cleanliness and safety of the device, and reduce the frequency of maintenance. The constricted portion 103 also provides additional positioning for the connecting portion 101 to a certain extent, making the connection more stable, preventing the connecting portion 101 from sliding, and ensuring the stability of the device.

[0046] Furthermore, the support block 2 has narrowed portions 202 on both sides, and the narrowed portions 202 are located between the cylinder 1 and the arc-shaped abutting surface 201 .

[0047] In this embodiment, the narrowing part 202 is designed to accurately provide a gap between the barrel 1 and the oil pipe wall, optimize the center positioning of the oil rod, ensure that the movement reduces deflection, improves the stability of the oil rod, and optimizes the oil well operation efficiency. The setting of the narrowing part 202 allows the support block 2 of the device to increase the contact area with the oil pipe and reduce the pressure, while also increasing the inner diameter of the oil pumping channel of the device so that the oil can be pumped out more smoothly and efficiently.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Sucker rod anti-wear and side load divider, characterized in that: Used to straighten the oil rod in the oil pipe, comprising: A cylinder (1), wherein both ends of the cylinder (1) have connecting parts (101), and the connecting parts (101) are used to connect the oil rod. A support block (2), the support block (2) being arranged outside the cylinder (1), the support block (2) being at least two and being arranged circumferentially on the cylinder (1), and the hinge axis of the support block (2) being parallel to the axial direction of the cylinder (1).

2. The sucker rod anti-wear and straightening lateral load divider according to claim 1, characterized in that: The connecting portion (101) is an internal thread.

3. The sucker rod anti-wear and straightening lateral load divider according to claim 1, characterized in that: The support block (2) is hingedly arranged on the cylinder (1).

4. The sucker rod anti-wear and straightening lateral load divider according to claim 1, characterized in that: The support block (2) has an arc-shaped abutting surface (201), and the arc-shaped abutting surface (201) is used to abut against the inner wall of the oil pipe.

5. The sucker rod anti-wear and straightening lateral load divider according to claim 1, characterized in that: The support block (2) is a strip-shaped support block.

6. The sucker rod anti-wear and straightening lateral load divider according to claim 1, characterized in that: The cylinder (1) has a limiting portion (104), both sides of the support block (2) have the limiting portion (104), the support block (2) has a limited portion (105), the limited portion (105) is driven by the support block (2) to rotate and then abuts against the limiting portion (104), so as to limit the swing angle of the support block (2).

7. The sucker rod anti-wear and straightening lateral load divider according to claim 1, characterized in that: The cylinder (1) has a through hole (102), and the connecting portion (101) is arranged in the through hole (102).

8. The sucker rod anti-wear and straightening lateral load divider according to claim 7, characterized in that: Both ends of the through hole (102) have constricted portions (103).

9. The sucker rod anti-wear and straightening lateral load divider according to claim 4, characterized in that: The support block (2) has narrowed portions (202) on both sides, and the narrowed portions (202) are located between the cylinder (1) and the arc-shaped abutting surface (201).

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