A large capacity strong magnetic fishing tool

Abstract

The utility model discloses a kind of high-capacity strong magnetic fishing tools, including upper joint and lower joint, the upper joint and lower joint between being provided with magnet frame, the magnet frame two ends are respectively provided with magnet frame chuck;The magnet frame is uniformly distributed with a plurality of sector-shaped clamping grooves on circumference, recess is opened in the magnet frame chuck with sector-shaped clamping groove adaptation, V-shaped flow guide groove is arranged between adjacent sector-shaped clamping groove;Fan form magnet structure is formed 360 ° strong magnetic field, can better improve adsorption effect, improve milling efficiency;Adopt clamping groove type design, magnet installation is simpler, need not additional fastener to be fixed, and falling risk is lower, and sector-shaped clamping groove has certain protective effect to magnet;Magnet piece design, maintenance replacement cost is low.

Description

Technical Field

[0001] This utility model belongs to the field of drilling technology, and in particular relates to a high-capacity strong magnetic retrieval tool. Background Technology

[0002] Existing mature strong magnetic retrieval tools mainly include plate-type strong magnetic retrieval tools and cylindrical strong magnetic retrieval tools. Plate-type strong magnetic retrieval tools typically have magnets arranged only on a single plane, resulting in a limited adsorption range and low adsorption efficiency. Cylindrical strong magnetic retrieval tools generally have a cylindrical magnet block located at the bottom or inside the tool, leading to a narrow adsorption range and low adsorption capacity.

[0003] Publication number CN119466632A relates to the field of solar energy technology, specifically to a side-opening strong magnetic retrieval device. It includes a base, with a fixed connecting joint at the upper part of the base, a baffle plate fixedly welded to the lower part of the cylindrical section of the base, and a bottom plate fixedly welded inside the semi-cylinder of the base. An insulating partition is installed on the top of the bottom plate, and a strong magnetic positioning block and a powerful magnet are installed on the top of the insulating partition. The strong magnetic positioning block, the powerful magnet, and the insulating partition are fixed to the bottom plate with screws. Because the novel side-opening strong magnetic retrieval device has a deflector plate on the outer side of the semi-cylinder, there is a large gap between the well wall and the semi-cylinder, which facilitates the upward return of drilling fluid and protects the semi-cylinder from excessive wear, thus extending the service life of the side-opening strong magnetic retrieval device.

[0004] Publication number CN222478687U relates to the field of oilfield well workover, specifically a split-type strong magnetic retrieval device. It includes an upper connector and a mounting base. The first end of the upper connector is a coupling with internal threads for connection to the upper tubing string; the second end of the upper connector is a male thread. The first end of the mounting base has a female thread for detachable connection with the male thread, and the second end of the mounting base has a mounting groove for mounting the strong magnet. Currently used strong magnetic retrieval tools employ an integrated design, where the magnet is fixed to the outer cylinder and cannot be disassembled, and there is no backwashing channel. After a period of storage or several uses, the strong magnet demagnetizes due to time or well temperature fluctuations, significantly reducing its adsorption effect and drastically lowering the retrieval success rate. Replacing the strong magnet requires replacing the entire strong magnetic retrieval device, resulting in high production costs. Therefore, a split-type strong magnetic retrieval device is urgently needed. Utility Model Content

[0005] This invention provides a high-capacity, high-strength magnetic retrieval tool, aiming to solve the aforementioned problems.

[0006] This utility model is implemented as follows: a high-capacity, high-strength magnetic retrieval tool includes an upper connector and a lower connector. A magnet frame is provided between the upper and lower connectors. Magnet frame chucks are provided at both ends of the magnet frame. Multiple fan-shaped slots are evenly distributed around the circumference of the magnet frame. Grooves adapted to the fan-shaped slots are formed in the magnet frame chucks. V-shaped guide grooves are provided between adjacent fan-shaped slots. Magnet blocks are installed at both ends of the fan-shaped slots. Tile-shaped magnet blocks and magnet separator blocks are arranged alternately between two magnet blocks. One end of each magnet block is located in a groove, and the other end is located in a fan-shaped slot.

[0007] Furthermore, the magnet block, the tile-shaped magnet block, and the magnet separator are sector-shaped blocks with the same inner and outer diameters but different lengths.

[0008] Furthermore, the magnetic blocking block and the magnetic separating block are made of non-magnetic materials, and the tile-shaped magnetic block is made of neodymium iron boron magnets.

[0009] Furthermore, the width of the magnetic stop block, the tile-shaped magnetic block, and the magnetic separator block is greater than the width of the fan-shaped slot.

[0010] Furthermore, the magnet holder is provided with external threads at both ends, and the inner ends of the upper and lower connectors are provided with matching internal threads.

[0011] Furthermore, the magnet holder is provided with 8 fan-shaped slots and 8 V-shaped guide grooves.

[0012] Furthermore, both the upper and lower connectors are provided with a spiral straightening structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model provides a high-capacity, high-strength magnetic retrieval tool with a simple structure, convenient use, wide application, safety, reliability, and suitability for various environments. The overall design features a modular structure, simplifying construction and facilitating installation. Eight fan-shaped magnets form a 360° circumference, providing a large adsorption capacity and strong attraction. The fan-shaped slot design eliminates the need for fasteners, reducing the risk of magnet detachment due to fastener loosening. The width of the fan-shaped slot is smaller than the width of the magnet, protecting it. The V-shaped flow channel design increases the liquid flow area, further enhancing the adsorption of magnetic objects and increasing adsorption capacity. The fan-shaped modular magnet structure facilitates easy installation, replacement, and low replacement costs. The multi-stage magnet block assembly allows for adjustment of the number of magnets used based on site conditions, adapting to different working conditions. The use of neodymium iron boron magnets, known for their strong magnetic force, ensures excellent adsorption performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the magnet frame structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This utility model provides a schematic diagram of a magnet holder chuck structure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] Please see Figure 1 This utility model provides a technical solution: a high-capacity strong magnetic retrieval tool, comprising: an upper connector 1, a magnet frame 2, a magnet frame chuck 3, a magnet block 4, a tile-shaped magnet block 5, a magnet separator block 6, and a lower connector 7;

[0022] Both ends of the upper connector 1 are provided with internal threads. One end of the internal thread is connected to the upper tool string, and the other end of the internal thread is connected to the external thread of the magnet holder 2.

[0023] The upper connector 1 is designed with a spiral straightening structure, which has the functions of flexible straightening and flow guidance;

[0024] like Figure 2 As shown, the magnet holder 2 is a structural component with external threads at both ends, eight fan-shaped slots 2-a evenly distributed on the circumference, and eight V-shaped guide grooves 2-b;

[0025] like Figure 3 As shown, the width of the opening of the fan-shaped slot 2-a is smaller than the width of the tile-shaped magnet block 5, so that the tile-shaped magnet block 5 can be fixed in the fan-shaped slot 2-a without the need for other fasteners;

[0026] like Figure 4 As shown, the magnet holder chuck 3 has eight grooves 3-a evenly distributed inside;

[0027] The magnetic block 4, the tile-shaped magnetic block 5, and the magnetic separator 6 are sector-shaped blocks with the same inner and outer diameters but different lengths; the magnetic block 4 and the magnetic separator 6 are made of non-magnetic materials.

[0028] The widths of the magnet block 4, the tile-shaped magnet block 5, and the magnet separator block 6 are greater than the width of the fan-shaped slot 2-a on the magnet holder 2.

[0029] In practical use, first install the magnet holder chuck 3 on the magnet holder 2, and then connect the magnet holder 2 to the upper connector 1; then install the magnet stop block 4 in the fan-shaped slot of the magnet holder 2, and then install the tile-shaped magnet block 5 and the magnet separator block 6 in the fan-shaped slot of the magnet holder 2 in sequence.

[0030] Among them, the tile-shaped magnet block 5 is restricted within the magnet frame 2 by the magnet stop block 4;

[0031] Both ends of the lower connector 7 are threaded. One end has an internal thread that connects to the external thread of the magnet holder 2, and the other end has an external thread that connects to the lower tool string.

[0032] The lower connector 7 is also designed with a spiral straightening structure, which has the functions of flexible straightening and flow guidance.

[0033] Eight fan-shaped magnets form a 360° circle, providing a large adsorption capacity and strong adsorption ability.

[0034] This utility model adopts a fan-shaped slot design, which eliminates the need for fasteners to fix the magnets, reducing the risk of magnets falling off due to fastener detachment; the V-shaped guide channel design allows for a larger liquid flow area, which is more conducive to adsorbing magnetic objects and has a larger adsorption capacity; the multi-stage magnet block group form allows the number of magnets used to be adjusted according to the actual site conditions, making it suitable for different working conditions.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-capacity, high-strength magnetic retrieval tool, characterized in that: The device includes an upper connector and a lower connector, with a magnet frame between them. Magnet frame chucks are located at both ends of the magnet frame. Multiple fan-shaped slots are evenly distributed around the circumference of the magnet frame. The magnet frame chucks have grooves that fit the fan-shaped slots, and V-shaped guide grooves are provided between adjacent fan-shaped slots. Magnet blocks are installed at both ends of each fan-shaped slot. Tile-shaped magnet blocks and magnet separator blocks are sequentially spaced between two magnet blocks. One end of each magnet block is located within a groove, and the other end is located within a fan-shaped slot.

2. The high-capacity strong magnetic retrieval tool according to claim 1, characterized in that: The magnet block, the tile-shaped magnet block, and the magnet separator are sector-shaped blocks with the same inner and outer diameters but different lengths.

3. The high-capacity strong magnetic retrieval tool according to claim 2, characterized in that: The magnetic blocks and magnetic separators are made of non-magnetic materials, while the tile-shaped magnetic blocks are made of neodymium iron boron magnets.

4. The high-capacity strong magnetic retrieval tool according to claim 1, characterized in that: The width of the magnetic stop block, the tile-shaped magnetic block, and the magnetic separator block is greater than the width of the fan-shaped slot.

5. A high-capacity, high-strength magnetic retrieval tool according to claim 1, characterized in that: The magnet holder has external threads at both ends, and the inner ends of the upper and lower connectors have matching internal threads.

6. A high-capacity, high-strength magnetic retrieval tool according to claim 1, characterized in that: The magnet holder is equipped with 8 fan-shaped slots and 8 V-shaped guide grooves.

7. A high-capacity, high-strength magnetic retrieval tool according to claim 1, characterized in that: Both the upper and lower connectors are equipped with spiral straightening structures.

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