Magnetic type oil pipe thread protector

Abstract

The utility model provides a magnetic attraction type oil pipe thread protector. The magnetic attraction type oil pipe thread protector comprises a centralizing body, a plurality of powerful magnets and a sliding ball. The first end of the centralizing body is used for being detachably inserted into an inner cavity of the end of the oil pipe. The powerful magnets are arranged at the first end of the centralizing body so that the centralizing body can be attracted to the inner wall of the oil pipe. The sliding ball is connected to the second end of the centralizing body and located outside the end of the oil pipe, the maximum outer diameter of the sliding ball is larger than the outer diameter of the oil pipe, and the sliding ball is movably arranged on an oil pipe sliding way. The device is convenient to install and use, high in practicability and capable of protecting threads of the oil pipe and improving the sliding performance of the oil pipe.

Description

Technical Field

[0001] This application relates to the field of oil and water well operations, and in particular to a magnetic tubing thread protector. Background Technology

[0002] During oil and water well operations, the tubing pulled up and down by the wellhead operators slides along the tubing slides to be raised to the wellhead and lowered into the well or placed neatly on the tubing bridge. When raising or lowering individual tubing sections, the external thread at the end of the tubing slides directly against the steel slides, causing friction. As the angle between the tubing section and the slide decreases, the friction on the external thread increases. This is especially problematic for older tubing pulled from the well, where the thread strength is reduced due to wear from the shackles and corrosion from the well fluids. The friction between the external thread and the slides easily damages the external thread, and if worn, it will affect the tubing's sealing performance, leading to leaks. Furthermore, when lowering individual tubing sections, the frictional resistance is high due to the threads sliding against the slides. The tubing's sliding speed is lower than the lowering speed of the workover rig's traveling block, which can cause the upper part of the tubing to tilt towards the derrick, potentially leading to a safety accident where the tubing coupling gets caught on the derrick.

[0003] Currently, when raising or lowering a single oil pipe, a thread protector is installed on the external thread of the oil pipe. However, the thread protector needs to be rotated to remove the thread during installation and removal, which is time-consuming and labor-intensive. Utility Model Content

[0004] One of the purposes of this application is to provide a magnetic suction oil pipe thread protector, which aims to protect the oil pipe thread when removing a single oil pipe, while also ensuring that the single oil pipe slides freely on the oil pipe slideway.

[0005] The technical solution of this application is:

[0006] A magnetic oil pipe thread protector includes a straightener, multiple powerful magnets, and a sliding ball. The first end of the straightener is detachably inserted into the inner cavity of the oil pipe end. The multiple powerful magnets are respectively disposed on the first end of the straightener so that the straightener is attracted to the inner wall of the oil pipe. The sliding ball is connected to the second end of the straightener and is located outside the oil pipe end, and its maximum outer diameter is larger than the outer diameter of the oil pipe, for movably disposed on the oil pipe slide.

[0007] As one technical solution of this application, a plurality of spaced positioning grooves are provided on the first end of the straightening body, and the powerful magnets are respectively disposed in the corresponding positioning grooves.

[0008] As one technical solution of this application, the positioning grooves are distributed at intervals along the length direction of the straightening body on the first end of the straightening body.

[0009] As one technical solution of this application, the straightening body and the sliding ball are integrally formed.

[0010] As one technical solution of this application, the straightening body has a first through hole penetrating through both opposite ends, and the sliding ball has a second through hole penetrating through both opposite ends. The first through hole and the second through hole are coaxially arranged and connected, and together form a vent.

[0011] As one technical solution of this application, the powerful magnets include two, three, or four.

[0012] As one technical solution of this application, the straightening body and the sliding ball are coaxially arranged.

[0013] As one technical solution of this application, the sliding sphere includes a semi-circular sphere or a semi-elliptical sphere.

[0014] As one technical solution of this application, the end of the sliding ball has an arc-shaped friction surface that matches the oil pipe slide.

[0015] As one technical solution of this application, the diameter of the sliding ball is larger than the outer diameter of the straightening body.

[0016] The beneficial effects of this application are:

[0017] The centralizer at the front end of the device is inserted into the inner cavity of the tubing end. A powerful magnet is mounted on the centralizer, and its magnetic force ensures the centralizer adheres tightly to the inner wall of the tubing, effectively preventing it from detaching from the external threads during use. Simultaneously, the sliding ball acts as the contact point for the tubing as it slides along the track. After installation, the device allows the tubing to contact the track via the sliding ball, thus protecting the external threads. Furthermore, the smooth surface of the sliding ball ensures smooth sliding during tubing descent, matching the descent speed of the workover rig's traveling block. This ensures safe operation when lowering a single section of tubing and prevents accidents such as snagging on the derrick. Moreover, because the device is detachably installed on the tubing using the magnetic force of the powerful magnet, it can be customized to fit various tubing diameters, making it a highly practical and widely applicable magnetic tubing thread protector. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the installation of a magnetic oil pipe thread protector provided in an embodiment of this application;

[0020] Figure 2 A schematic diagram of a magnetic oil pipe thread protector provided in an embodiment of this application.

[0021] Icons: 1-Straightening body; 2-Powerful magnet; 3-Sliding ball; 4-Oil pipe; 5-Slide rail; 6-External thread; 7-Ventilation hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this application and to simplify 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. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Example:

[0030] Please refer to Figure 1 (Refer to) Figure 2 This application provides a magnetic suction type oil pipe thread protector, which mainly includes a straightener 1, multiple strong magnets 2 and a sliding ball 3; the straightener 1 has a first end and a second end opposite to each other, wherein the first end of the straightener 1 is detachably inserted into the inner cavity of the end of the oil pipe 4; multiple strong magnets 2 are respectively disposed on the first end of the straightener 1 so that the straightener 1 is attracted to the inner wall of the oil pipe 4; the sliding ball 3 is connected to the second end of the straightener 1 and is located outside the end of the oil pipe 4, and its maximum outer diameter is greater than the outer diameter of the oil pipe 4, and it is movably disposed on the slide 5 of the oil pipe 4.

[0031] The outer diameter of the stabilizer 1 is slightly smaller than the inner diameter of the oil pipe 4. Its main function is to fix and support the oil pipe 4 when it slides on the slide rail 5. The strong magnet 2 is installed on the stabilizer 1 and is inserted into the inner cavity of the tail of the oil pipe 4 together with the stabilizer 1. Its main function is to fix the magnetic oil pipe thread protector. The sliding ball 3 has a smooth surface and good sliding performance. Therefore, when the oil pipe 4 slides on the slide rail 5, the sliding ball 3 mainly protects the external thread 6 of the oil pipe 4 and increases the sliding performance of the oil pipe 4.

[0032] Furthermore, a plurality of spaced positioning grooves are formed on the first end of the straightening body 1, and the powerful magnets 2 are respectively disposed in the corresponding positioning grooves. In this embodiment, the positioning grooves are spaced apart along the length direction of the straightening body 1 on the first end of the straightening body 1. In other embodiments, the arrangement of the positioning grooves is designed differently according to the requirements, and is not limited to the design method in this embodiment.

[0033] In this embodiment, the centralizing body 1 and the sliding ball 3 are integrally formed and coaxially arranged. Furthermore, the centralizing body 1 is hollow and has a first through hole penetrating both opposite ends; the sliding ball 3 is also hollow and has a second through hole penetrating both opposite ends. The first and second through holes are coaxially arranged and connected, together forming a vent 7. The vent 7 reduces the resistance during the lowering of the oil pipe 4, allowing it to be lowered smoothly.

[0034] It should be noted that in this embodiment, two strong magnets 2 can be used; in other embodiments, the number of strong magnets 2 can be three or four, etc., and is not limited to the number and design method in this embodiment. The magnetic force of the strong magnets 2 enables the straightener 1 to be tightly attracted to the inner wall of the oil pipe 4, effectively preventing the device from falling off from the external thread 6 of the oil pipe 4 during use. Furthermore, since the device is detachably installed on the oil pipe 4 by the magnetic force of the strong magnets 2, it can be made into a magnetic oil pipe thread protector suitable for various types of oil pipes 4 according to the inner diameter of different types of oil pipes 4, making it highly practical and widely applicable.

[0035] It should be noted that, in this embodiment, the end of the sliding ball 3 has a smooth, arc-shaped friction surface that mates with the slide rail 5 of the oil pipe 4. It can be a semi-circular sphere or a semi-elliptical sphere, and is not limited to the design in this embodiment. The sliding ball 3 is the contact body for the oil pipe 4 as it slides on the slide rail 5. After installation, this device allows the oil pipe 4 to contact the slide rail 5 via the sliding ball 3, thereby protecting the external thread 6 of the oil pipe 4.

[0036] It should be noted that in this embodiment, the diameter of the sliding ball 3 is larger than the outer diameter of the straightening body 1.

[0037] In summary, the centralizer 1 at the front end of the device is inserted into the inner cavity of the tubing 4 end. A powerful magnet 2 is mounted on the centralizer 1, and the magnetic force of the magnet 2 ensures that the centralizer 1 is firmly attached to the inner wall of the tubing 4, effectively preventing the device from detaching from the external thread 6 of the tubing 4 during use. Simultaneously, the sliding ball 3 serves as the contact body for the tubing 4 as it slides on the slide rail 5. After installation, the device allows the tubing 4 to contact the slide rail 5 via the sliding ball 3, thus protecting the external thread 6 of the tubing 4. Furthermore, because the smooth surface of the sliding ball 3 contacts the slide rail 5 of the tubing 4, it ensures the sliding performance of the tubing 4 during lowering, making the sliding speed of the tubing 4 consistent with the lowering speed of the workover rig's traveling block. This ensures operational safety when lowering a single section of tubing 4 and prevents accidents such as snagging on the derrick. Furthermore, since the device is detachably installed on the oil pipe 4 by the magnetic force of the strong magnet 2, it can be made into a magnetic oil pipe thread protector suitable for various types of oil pipes 4 according to the inner diameter of different types of oil pipes 4. It is highly practical and has a wide range of applications.

[0038] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A magnetic oil pipe thread protector, characterized in that, The device includes a centralizer, multiple powerful magnets, and a sliding ball. The first end of the centralizer is detachably inserted into the inner cavity of the oil pipe end. The multiple powerful magnets are respectively disposed on the first end of the centralizer so that the centralizer is attracted to the inner wall of the oil pipe. The sliding ball is connected to the second end of the centralizer and is located outside the oil pipe end, with a maximum outer diameter greater than the outer diameter of the oil pipe, and is movably disposed on the oil pipe slide.

2. The magnetic oil pipe thread protector according to claim 1, characterized in that, The first end of the straightening body is provided with a plurality of spaced positioning grooves, and the powerful magnets are respectively disposed in the corresponding positioning grooves.

3. The magnetic oil pipe thread protector according to claim 2, characterized in that, The positioning grooves are spaced apart along the length of the straightening body on the first end of the straightening body.

4. The magnetic oil pipe thread protector according to claim 1, characterized in that, The straightening body and the sliding ball are integrally formed.

5. The magnetic oil pipe thread protector according to claim 4, characterized in that, The straightening body has a first through hole penetrating both opposite ends, and the sliding ball has a second through hole penetrating both opposite ends. The first through hole and the second through hole are coaxially arranged and connected, and together form a vent.

6. The magnetic oil pipe thread protector according to claim 1, characterized in that, The powerful magnets may include two, three, or four.

7. The magnetic oil pipe thread protector according to claim 1, characterized in that, The straightening body is coaxially arranged with the sliding ball.

8. The magnetic oil pipe thread protector according to claim 1, characterized in that, The sliding sphere includes a semi-circular sphere or a semi-elliptical sphere.

9. The magnetic oil pipe thread protector according to claim 1, characterized in that, The end of the sliding ball has an arc-shaped friction surface that matches the oil pipe slide.

10. The magnetic oil pipe thread protector according to claim 1, characterized in that, The diameter of the sliding ball is larger than the outer diameter of the straightening body.

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