Electromagnetic cable through packer

Abstract

The application relates to the technical field of downhole drilling equipment, in particular to an electromagnetic cable-crossing packer. The electromagnetic cable-crossing packer comprises a center pipe column which can be connected to form a coiled tubing; an outer shell which is used for isolation with the outside, the outer shell is arranged on the outer periphery of the center pipe column and a first accommodating cavity is formed between the outer shell and the center pipe column; and a cable leading part, an electromagnetic conversion part, a locking part, a compression rubber cylinder part and a cable conversion part which are arranged in sequence along the center pipe column. The application divides the cable into multiple subparts, connects the cable with the electromagnetic packer respectively and realizes the "crossing" of the cable through the conductive medium in the pipe.

Description

Technical Field

[0001] This application relates to the field of downhole drilling equipment technology, and in particular to an electromagnetic cable packer. Background Technology

[0002] In my country, coal-bearing gas fields in areas such as Linxing and Shenfu have unique geological characteristics—multi-layered superposition, co-originating and coexisting with multiple gas sources. Due to the limitations of geological occurrence and surface conditions, traditional single-layer mining has been greatly challenged, resulting in poor economic efficiency and resource utilization.

[0003] To address these challenges, the industry currently widely adopts multi-layer synergistic mining technology as the mainstream development strategy. This technology optimizes three-dimensional development by developing coal-bearing gas reservoirs with varying burial depths, production characteristics, and pressure characteristics into multi-layer pressure-sharing systems. This not only effectively improves resource recovery rates but also significantly reduces overall mining costs.

[0004] The implementation of multi-level pressure system extraction is not only a significant innovation in my country's unconventional natural gas development technology, but also provides strong support for ensuring national energy security and promoting the transformation and upgrading of the energy structure. The key to realizing multi-level pressure system extraction is the installation of packers in the wellbore to separate different pressure systems, enabling the production of gases from different systems and improving production efficiency.

[0005] In the development of multi-layered pressure systems within the same wellbore, the limited wellbore space necessitates the use of electric submersible (ESP) rodless lifting equipment to effectively reduce the complexity of drainage equipment and tubing. This requires the design of cable packers to provide power to the downhole drainage equipment. Furthermore, packers play a crucial role in stratified testing. Stratified testing involves progressively increasing the pressure of each pressure system. Different pressure systems require packers for isolation, and signal transmission via cables is necessary to record parameters such as flow rate and pressure at different pressure levels. Each pressure level is maintained for a period of time (e.g., several hours to several days), and pressure stability and gas production are observed and recorded. After the test, pressure recovery tests are conducted to observe and record the rate and extent of pressure recovery to assess reservoir characteristics and development potential. Therefore, the design of cable packers is a critical issue that needs to be addressed in the development and testing of stratified pressure systems in oil and gas fields and coal-bearing gas fields.

[0006] Packers, under the influence of external forces (such as hydraulic drive or tubing gravity), compress and expand their sealing components (e.g., rubber sleeves), thereby sealing the annular space between the tubing and casing. This enables oilfields to perform downhole stratified testing, stratified injection, and stratified production. The use of packers allows for the separation of different pressure systems, enabling production strategies tailored to those systems. However, some problems or defects exist in packer design within related technologies.

[0007] 1. With the widespread adoption of rodless oil production equipment such as submersible electric pumps (ESPs) and submersible screw pumps, these devices rely on long-distance cables to transmit electricity to downhole motors for continuous and stable power supply. However, the installation of these cables places higher demands on packer design. Traditional packers do not adequately consider the ease and sealing of cable passage, leading to problems such as wear, leakage, and even jamming when cables pass through the packers in practical applications, seriously affecting operational safety and efficiency. Therefore, designing a packer that can effectively isolate different formation pressures while ensuring the safe and smooth passage of cables has become a pressing technical challenge.

[0008] 2. With the widespread adoption of rodless oil production equipment such as submersible electric pumps (ESPs) and submersible screw pumps, these devices rely on long-distance cables to transmit electricity to downhole motors for continuous and stable power supply. However, the installation of these cables places higher demands on packer design. Traditional packers do not adequately consider the ease and sealing of cable passage, leading to problems such as wear, leakage, and even jamming when cables pass through the packers in practical applications, seriously affecting operational safety and efficiency. Therefore, designing a packer that can effectively isolate different formation pressures while ensuring the safe and smooth passage of cables has become a pressing technical challenge.

[0009] 3. In oil and gas extraction, packers not only need to cope with the conventional operating conditions of high pressure inside the tubing string and low pressure in the annulus between the tubing and casing in traditional stratified water injection operations, but also need to adapt to the special requirements of complex well conditions such as high pressure in the annulus and low pressure inside the tubing string in multi-layer pressure distribution systems. Especially in the case of co-extraction of tight gas reservoirs and coalbed methane reservoirs, the annulus may be subjected to high-pressure tight gas, while the tubing contains low-pressure coalbed methane. This huge difference in internal and external pressure places extremely high demands on the packer's pressure-bearing capacity, sealing performance, and stability. If the packer is poorly designed or the materials are not selected appropriately, it can easily lead to sealing failure, oil and gas cross-flow, and other problems, seriously affecting the extraction effect and safe production. Therefore, developing packers that can adapt to extreme pressure differences and have excellent sealing performance and long-term stability is the key to improving the efficiency of oil and gas field development. Summary of the Invention

[0010] Because different gas layers have different properties, simultaneous production from the same well has a significant impact on the productivity of each layer and subsequent re-production operations. Therefore, packers are needed to separate different reservoirs and conduct stratified testing on different producing layers. However, the use of conventional packers has prevented cable passage, and existing cable-passing dividers cannot guarantee a complete seal due to cable passage. Furthermore, when multiple pressure systems are used in conjunction with production, eccentric packers cannot achieve the insertion of multiple layers of tubing strings. Additionally, due to prolonged use, internal components of the packer age, sometimes preventing proper unsealing. To address these issues, this invention proposes an electromagnetic cable-passing packer.

[0011] This application provides an electromagnetic cable packer, comprising:

[0012] A central tubing string, which can be connected to form a continuous tubing;

[0013] An outer shell, used for isolation from the outside, is disposed on the outer periphery of the central tube column and forms a first accommodating cavity between the outer shell and the central tube column;

[0014] Cable lead-in section:

[0015] Includes cable connectors for connecting multiple cables to form a cable line;

[0016] Electromagnetic conversion unit:

[0017] Including the iron core;

[0018] A coil, the coil being wound around the iron core;

[0019] A magnet, located below the iron core, can move up and down under the magnetic field generated by the coil;

[0020] Locking part;

[0021] An upper snap ring is located below the magnet and has upper snap ring teeth;

[0022] The lower buckle ring is located below the upper buckle ring and has lower buckle ring teeth;

[0023] The upper buckle ring teeth and the lower buckle ring teeth can be separated in a first position or engaged in a second position;

[0024] The upper buckle ring can move between the first position and the second position under the magnetic force of the magnet;

[0025] Compression cartridge section:

[0026] Includes: Compressed rubber cartridge partition;

[0027] A compression rubber cylinder, wherein a partition plate is disposed on the compression rubber cylinder;

[0028] The slip is disposed on the outer periphery of the central tube column, and a second receiving cavity is formed inside the slip;

[0029] Unsealing clips, wherein the unsealing clips are disposed within the second receiving cavity;

[0030] A movable ring, wherein the movable ring is disposed within the second accommodating cavity;

[0031] Cable conversion section:

[0032] Includes: cable conversion devices;

[0033] A barrier ring is provided at both the upper and lower ends of the cable conversion device.

[0034] Furthermore, the central tube column is provided with a coupling at one end and a connecting thread at the other end;

[0035] The central tubing can be connected to the connecting thread via the coupling to form the continuous tubing.

[0036] Furthermore, the central tube column is provided with a cable channel, a lower clamp ring rib, and a barrier ring rib along its axial direction;

[0037] The cable channel extends from the cable lead-in portion to the cable conversion portion;

[0038] The lower clamp ring rib is used to fix the lower clamp ring;

[0039] The barrier ring rib is used to fix the barrier ring.

[0040] Furthermore, the cable lead-in portion further includes:

[0041] A rubber pad is disposed at the end of the housing and located between the housing and the central tube column;

[0042] A sealing screw, wherein the sealing screw is disposed in connection with the housing, the rubber gasket, and the central tube;

[0043] The cable connector is located inside the housing.

[0044] Furthermore, the upper snap ring also includes an upper snap ring sub-plate and an upper snap ring main plate;

[0045] The locking part further includes:

[0046] A spring, the spring being disposed at the end of the upper snap ring;

[0047] The tympanic membrane is connected between the upper snap ring main board and the outer shell and is used to seal the inside of the shell.

[0048] Furthermore, the cable conversion device further includes:

[0049] A protective housing is provided around the cable conversion device to isolate the cable conversion device from the external environment;

[0050] The barrier ring includes an upper barrier ring and a lower barrier ring, and the lower barrier ring is provided with three cable adapters;

[0051] The upper barrier ring and the lower barrier ring each have three fixing screw holes on their circumferential surfaces;

[0052] Fastening screws are used to secure the upper barrier ring and the periphery of the upper barrier ring.

[0053] Furthermore, the lower barrier ring is provided with fixing screw holes and cable connection holes.

[0054] The electromagnetic cable packer provided by this invention has the following beneficial effects:

[0055] 1. This invention proposes two methods for unsealing packers, which greatly avoids the problem of packers being unable to be unsealed normally.

[0056] 2. An electromagnetic cable packer was proposed. The magnetic force generated inside the device pushes the upper snap ring to squeeze the compressed rubber cylinder and complete the setting seal.

[0057] 3. This invention proposes dividing the cable into multiple sub-sections, each connected to an electromagnetic packer, and enabling the cable to "pass through" the packer via the conductive medium inside the tube. Attached Figure Description

[0058] Figure 1 A test schematic diagram of an electromagnetic over-cable packer according to some embodiments is shown;

[0059] Figure 2 A schematic diagram of the overall structure of an electromagnetic over-cable packer according to some embodiments is shown;

[0060] Figure 3 A schematic diagram of the end structure of an electromagnetic over-cable packer according to some embodiments is shown;

[0061] Figure 4 A schematic diagram of the central column of an electromagnetic over-cable packer according to some embodiments is shown;

[0062] Figure 5 A schematic diagram of the locking part structure of an electromagnetic cable packer according to some embodiments is shown;

[0063] Figure 6 A schematic diagram of the structure of a cable conversion device for an electromagnetic cable packer according to some embodiments is shown;

[0064] Figure 7 A schematic diagram of the lower barrier ring of an electromagnetic over-cable packer according to some embodiments is shown.

[0065] In the above figures, 1. Central tube column; 2. Cable lead-in device; 3. Housing; 17. Rubber pad; 18. Sealing screw; 19. Cable connector; 101. Central tube wall; 102. Coupling; 103. Cable channel; 104. Lower snap-fit ​​ring rib; 105. Barrier ring rib; 106. Connecting thread; 20. Sealing shear pin; 21. Spring; 22. Diaphragm; 801. Upper snap-fit ​​ring sub-plate; 802. Upper snap-fit ​​ring main plate; 803. Upper snap-fit ​​ring. 1. Ring clip; 901. Lower clip ring clip; 4. Fixing screw; 5. Iron core; 6. Coil; 7. Magnet; 8. Upper clip ring; 9. Lower clip ring; 10. Compression cartridge partition; 11. Compression cartridge; 12. Unsealing shear pin; 13. Clip; 14. Moving ring; 15. Cable conversion device; 16. Lower barrier ring; 23. Protective housing; 24. Fastening screw; 25. Upper barrier ring; 1601. Fixing screw hole; 1602. Cable connection hole. Detailed Implementation

[0066] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0067] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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. Therefore, they should not be construed as limitations on this application.

[0068] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0069] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] Reference will now be made in detail to embodiments of this application, with examples of embodiments of this application shown in the accompanying drawings.

[0071] Reference Figure 1 Because different gas layers have different properties, simultaneous production from the same well has a significant impact on the productivity of each layer and subsequent re-production. Therefore, packers are needed to separate different reservoirs and conduct stratified testing on different producing layers. However, the use of conventional packers has prevented cable passage, and existing cable-passing dividers cannot guarantee a complete seal due to cable passage. Furthermore, when multiple pressure systems are used in synergistic production, eccentric packers cannot achieve the insertion of multiple layers of tubing strings. Additionally, due to prolonged use, internal components of the packer age, sometimes preventing proper unsealing. To address these issues, this invention proposes an electromagnetic cable-passing packer.

[0072] Reference Figure 2 This application provides an electromagnetic cable packer, comprising:

[0073] The central tubing 1 can be connected to form a continuous tubing; the outer casing 3 is used for isolation from the outside, and the outer casing 3 is located on the outer periphery of the central tubing 1 and forms a first accommodating cavity with the central tubing 1.

[0074] Cable lead-in section: includes cable lead-in device 2, used to connect multiple cables to form a cable line;

[0075] Electromagnetic conversion unit: includes an iron core 5; a coil 6, which is wound around the iron core 5; and a magnet 7, located below the iron core 5, which can move up and down under the magnetic field generated by the coil 6.

[0076] Locking part; upper latching ring 8, located below magnet 7, has upper latching ring teeth 803; lower latching ring 9, located below upper latching ring 8, has lower latching ring teeth 901; upper latching ring teeth 803 and lower latching ring teeth 901 can be separated in a first position or engaged in a second position; upper latching ring teeth 803 can move between the first position and the second position under the magnetic force of magnet 7;

[0077] Compression cartridge section: includes: compression cartridge partition 10; compression cartridge 11, with the compression cartridge partition 10 disposed on the compression cartridge 11;

[0078] Slip 13 is located on the outer periphery of the central tube column 1, and a second receiving cavity is formed inside slip 13;

[0079] Unseal the scissor 12, which is located in the second receiving cavity;

[0080] The movable ring 14 is disposed within the second accommodating cavity;

[0081] Cable conversion section: includes: cable conversion device 15; barrier ring, the barrier ring is disposed at the upper and lower ends of the cable conversion device 15.

[0082] Specifically, the electromagnetic cable packer is mainly divided into an electromagnetic lead-in section, an electromagnetic conversion section, a locking section, a compression rubber cylinder section, and a cable conversion section. These modules are fixed in sequence along the axial direction of the central column 1.

[0083] Specifically, such as Figure 3 As shown, the external cable is connected through the cable connector 19. The cable connector 19 is adjacent to the cable lead-in device 2 and can realize voltage division and circuit conversion within the device.

[0084] The upper outer casing 3 can isolate the internal device from the external environment. The rubber pad 17 acts between the upper outer casing 3 and the central tube wall 101, which can effectively prevent the entry of external impurities and can be locked by the sealing screw 18.

[0085] like Figure 4 As shown, one end of the central tubing 1 is provided with a coupling 102, and the other end is provided with a connecting thread 106; the central tubing 1 can be connected to the connecting thread 106 through the coupling 102 to form a continuous tubing.

[0086] When installing the electromagnetic cable packer, the upper and lower tubing strings are connected by the coupling 102 and the connecting thread 106 to form a continuous tubing.

[0087] Below the cable connection device 22 is the iron core 5, around which a coil 6 is wound. Through the voltage division of the cable connection device 2, the coil 6 is energized. The magnetic field generated by the energized coil 6 magnetizes the iron core 5, which in turn acts on the magnet 7 below, pushing the upper locking ring. Figure 2 and 5As shown, during the pushing process, the setting shear pin 20 is sheared. As the upper locking ring 8 moves and gradually contacts the lower locking ring 9, the upper locking ring teeth 803 and the lower locking ring teeth 901 on the inner side of the upper locking ring 8 mesh with each other, preventing the upper locking ring 8 from retracting and locking it. As the upper locking ring 8 continues to advance, it pushes the compression rubber cylinder 11 in front. The compression rubber cylinder 11 is made of rubber, which expands under pressure and contacts the oil pipe wall to achieve setting. The compression rubber cylinder 11 has three working surfaces, which can effectively enhance the friction with the tubing string, making the seal more reliable. In addition, three compression rubber cylinder baffles 10 are embedded in the middle of the compression rubber cylinder 11, which can greatly prevent the compression rubber cylinder from being crushed during long-term use.

[0088] The central column 1 is provided with a cable channel 103, a lower clamping ring 104 and a barrier ring 105 along its axial direction; the cable channel 103 extends from the cable lead-in part to the cable conversion part; the lower clamping ring 104 is used to fix the lower clamping ring 9; the barrier ring 105 is used to fix the barrier ring.

[0089] Specifically, such as Figure 4 As shown, the upper end has couplings 102 and 102 for connecting the upper pipe column. Around the central pipe column 11 are cable channels 103, allowing cables to pass through intermediate conduits for transmission. The lower snap-fit ​​ring 104 secures the lower snap-fit ​​ring 9. The barrier ring 105 secures the cable conversion device 15. At the end of the central pipe column 11 is a connecting thread 106, enabling connection to the lower pipe column.

[0090] Specifically, such as Figure 5 As shown, magnet 7 moves under the magnetic force generated by the upper iron core 5, pushing the upper locking ring 8 and cutting the sealing shear pin 20. The upper locking ring 8 consists of two layers—the upper locking ring main plate 802 and the upper locking ring sub-plate 801. The front end of the upper locking ring sub-plate 801 has upper locking ring teeth 803. As the upper locking ring 8 moves, the upper locking ring teeth 803 mesh with the lower locking ring teeth 901 of the lower locking ring 9. The lower locking ring 9 is embedded in the tube wall 101, making it immovable. At the end of the upper locking ring 8 is a diaphragm 22, which connects the end of the upper outer shell 3 and the end of the upper locking ring 8, ensuring the airtightness of the tube environment.

[0091] Specifically, the upper snap ring 8 also includes an upper snap ring sub-plate 801 and an upper snap ring main plate 802; the locking part also includes: a spring 21, which is located at the end of the upper snap ring 8; a diaphragm 22; the diaphragm 22 is connected between the upper snap ring main plate 802 and the outer shell 3, and is used to seal the inside of the shell.

[0092] like Figure 2As shown, the only contact between the lower side of the compression cartridge 11 and the slip 13 is with the moving ring 14. The slip 13 and the moving ring 14 are connected to each other by threads. The combination of the slip 13 and the moving ring 14 is fixed by the unsealing pin 12. The interaction of the slip 13, the moving ring 14, and the unsealing pin 12 fixes the lower side of the compression cartridge 11. Since the cable is transmitted through an intermediary, it is converted at the lower part by the cable conversion device 15. The lower side of the cable conversion device 15 is adjacent to the barrier ring, which can effectively seal the cable conversion device 15. The cable conversion device 15 also has a cable adapter embedded inside to realize the connection of additional cables.

[0093] The cable lead-in part further includes: a rubber pad 17, which is located at the end of the housing 3 and between the housing 3 and the central tube 1; a sealing screw 18, which passes through the housing 3, the rubber pad 17 and the central tube 1; and a cable connector 19, which is located inside the housing 3.

[0094] The cable conversion device 15 further includes: a protective housing 23, which is located around the cable conversion device 15 to isolate it from the external environment; an isolation ring including an upper isolation ring 25 and a lower isolation ring 16, with three cable adapters on the lower isolation ring 16; three fixing screw holes 1601 on the circumference of both the upper isolation ring 25 and the lower isolation ring 16; and fastening screws 24, which are fixed to the upper isolation ring 25 and the sides of the upper isolation ring 25.

[0095] Specifically, such as Figure 6 The diagram shows a cross-sectional view of the cable conversion device. At the top is the upper blocking ring 25, adjacent to which is the cable conversion device 15. The cable conversion device 15 converts the intermediate pipeline inside the central tubing 1 into a standard wellbore cable. Below it is the lower blocking ring 16, which has three cable adapters on its side. Both the upper blocking ring 25 and the lower blocking ring 16 have three fixing screw holes 1602 on their circumferences. The lower protective housing 23 isolates the cable conversion device 15 from the external environment, and its two ends are fixed to the circumference of the upper blocking ring 25 and the lower blocking ring 16 by 8M fastening screws 2424.

[0096] The lower barrier ring 16 is provided with a fixing screw hole 1601 and a cable connection hole 1602.

[0097] Specifically, such as Figure 7 The diagram shows a cross-sectional view of the lower blocking ring. The fixing screw hole 1601 can fix the lower protective shell 23, and the cable connection hole 1602 can realize the connection of external cables.

[0098] When using it, the following steps are required:

[0099] S1 Preparation: Check the electromagnetic cable packer to see if it functions properly.

[0100] S2: Lowering the electromagnetic cable packer: Connect the lower thread of the electromagnetic cable packer to the coupling 102 of the oil pipe, and connect the upper coupling 102 of the electromagnetic cable packer to the thread of the oil pipe. At the same time, connect the cable interfaces at both ends of the electromagnetic cable packer to the cables to be connected. After the connection is completed, lower it to the designated position.

[0101] S3: Electromagnetic cable packer setting: When the cable is energized, the magnet 7 wound around the coil 6 inside the electromagnetic cable packer generates magnetic force to push the upper locking ring below. The upper locking ring squeezes and compresses the rubber cylinder, making it contact and press against the oil pipe wall. The lower locking ring can fix the current position of the upper locking ring and prevent it from retracting.

[0102] S4: Unsealing of Electromagnetic Cable Packer: There are two unsealing methods for the electromagnetic cable packer: 1. Using special machinery, lift the tubing string. The unsealing shear pin 12 inside the electromagnetic cable packer is cut, the fixed slip 13 moves downward, and the expanded rubber cylinder returns to its original shape, thus unsealing. 2. Using special machinery, rotate the tubing string in the opposite direction. The slip 13 and the moving ring 14 are connected by threads. By rotating, the slip 13 moves downward, and the expanded rubber cylinder returns to its original shape, thus unsealing.

[0103] The electromagnetic cable packer provided by this invention has the following beneficial effects:

[0104] 1. This invention proposes two methods for unsealing packers, which greatly avoids the problem of packers being unable to be unsealed normally.

[0105] 2. An electromagnetic cable packer was proposed. The magnetic force generated inside the device pushes the upper snap ring to squeeze the compressed rubber cylinder and complete the setting seal.

[0106] 3. This invention proposes dividing the cable into multiple sub-sections, each connected to an electromagnetic packer, and enabling the cable to "pass through" the packer via the conductive medium inside the tube.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0108] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An electromagnetic cable packer, characterized in that, include: A central tubing string, which is connected to form a continuous tubing; An outer shell, used for isolation from the outside, is disposed on the outer periphery of the central tube column and forms a first accommodating cavity between the outer shell and the central tube column; Cable lead-in section: Includes cable connectors for connecting multiple cables to form a cable line; Electromagnetic conversion unit: Includes an iron core; and a coil wound around the iron core. A magnet, located below the iron core, moves up and down under the magnetic field generated by the coil; Locking part; An upper snap ring is located below the magnet and has upper snap ring teeth; A lower locking ring is located below the upper locking ring and has lower locking ring teeth; the upper locking ring teeth are separated from the lower locking ring teeth in a first position or engaged in a second position; the upper locking ring moves between the first position and the second position under the magnetic force of the magnet. Compression cartridge section: include: A compression rubber cylinder partition; a compression rubber cylinder, wherein the compression rubber cylinder partition is disposed on the compression rubber cylinder; The slip is disposed on the outer periphery of the central tube column, and a second receiving cavity is formed inside the slip; Unsealing clips, wherein the unsealing clips are disposed within the second receiving cavity; a movable ring, wherein the movable ring is disposed within the second receiving cavity; Cable conversion section: Includes: a cable conversion device; and a barrier ring, wherein the barrier ring is disposed at the upper and lower ends of the cable conversion device.

2. The electromagnetic cable packer according to claim 1, characterized in that, The central tubing is provided with a coupling at one end and a connecting thread at the other end; the central tubing is connected to the connecting thread through the coupling to form the continuous tubing.

3. The electromagnetic cable packer according to claim 1, characterized in that, The central tubular column is provided with a cable channel, a lower clamp ring bar, and a barrier ring bar along its axial direction. The cable channel extends from the cable lead-in portion to the cable conversion portion; The lower clamp ring rib is used to fix the lower clamp ring; The barrier ring rib is used to fix the barrier ring.

4. The electromagnetic cable packer according to claim 1, characterized in that, The cable lead-in portion further includes: A rubber pad; the rubber pad is disposed at the end of the outer casing and located between the outer casing and the central tube column; A sealing screw, which passes through the housing, the rubber gasket, and the central tube; and a cable connector, which is located inside the housing.

5. The electromagnetic cable packer according to claim 1, characterized in that, The upper buckle ring also includes an upper buckle ring sub-plate and an upper buckle ring main plate; The locking part further includes: a spring, the spring being disposed at the end of the upper buckle ring; and a diaphragm. The diaphragm is connected between the upper snap ring main board and the outer shell, and is used to seal the inside of the outer shell.

6. The electromagnetic cable packer according to claim 1, characterized in that, The cable conversion device further includes: a protective housing; The protective housing is located around the cable conversion device to isolate the cable conversion device from the external environment. The barrier ring includes an upper barrier ring and a lower barrier ring, and the lower barrier ring is provided with three cable adapters; The upper and lower barrier rings each have three fixing screw holes on their circumferential surfaces; fastening screws; The fastening screws are fixed to the upper barrier ring and the periphery of the upper barrier ring.

7. The electromagnetic cable packer according to claim 6, characterized in that, The lower barrier ring is provided with fixing screw holes and cable connection holes.

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