Electromagnetic cable passing packer

Abstract

The invention relates to the technical field of underground drilling equipment, in particular to an electromagnetic cable passing packer. The electromagnetic type cable-passing packer comprises a central pipe column and an electromagnetic type cable-passing packer, wherein the central pipe column can be connected to form a continuous oil pipe; the shell is used for being isolated from the outside, the shell is arranged on the periphery of the central tubular column, and a first containing cavity is formed between the shell and the central tubular column; the cable leading part, the electromagnetic conversion part, the locking part, the compression rubber sleeve part and the cable conversion part are sequentially arranged along the central pipe column. According to the invention, the cable is divided into a plurality of sub-parts which are respectively connected with the electromagnetic packer, and the cable passes through the packer through the conducting medium in the pipe.

Description

Technical Field

[0001] The present application relates to the technical field of downhole drilling equipment, and in particular to an electromagnetic cable packer. Background Art

[0002] In my country, coal-bearing gas fields in Linxing, Shenfu and other areas have unique geological characteristics - multi-layer superposition, co-existence of the same source, and coexistence of multiple gases. Due to the limitations of geological conditions and ground conditions, traditional single-layer mining has brought great challenges, and its economy and effective resource utilization are relatively poor.

[0003] To solve these problems, the industry currently generally adopts multi-layer commingled mining technology as the mainstream development strategy. This technology optimizes three-dimensional development and develops coal-bearing gas reservoirs with different burial depths, production characteristics, pressure characteristics, etc. in a multi-layer pressure system, which not only effectively improves resource recovery, but also significantly reduces overall mining costs.

[0004] The implementation of multi-layer pressure system exploitation is not only an important 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 energy structure. The key to the realization of multi-layer pressure system exploitation is to install packers in the wellbore to separate different pressure systems, realize the production of gases from different systems, and improve production efficiency.

[0005] When mining in the same wellbore with multiple pressure systems, due to the limited wellbore space, in order to reduce the complexity of the drainage equipment and pipe string, the use of submersible rodless lifting process equipment can effectively solve the problem. This requires the design of a cable packer to provide power for the downhole drainage equipment. In addition, the packer also plays a key role in layered testing. Layered testing requires a step-by-step pressure test on each pressure system. Different pressure systems require packers to be isolated. Test signal transmission requires cables and other signal lines to record parameters such as flow and pressure under different pressures. Each pressure level is maintained for a period of time (such as several hours to several days), and the pressure stability and gas production are observed and recorded. After the test, a pressure recovery test is performed to observe and record the speed and degree of pressure recovery to evaluate reservoir characteristics and mining potential. Therefore, cable packers have become an urgent problem to be solved in the development and layered testing of layered pressure systems in oil and gas fields and coal-bearing gas fields.

[0006] The packer can compress and expand its packing parts (such as rubber tubes) under the action of external forces (such as hydraulic drive, pipe string gravity, etc.), thereby isolating the annular space between the oil pipe and the casing, which can help the oil field complete downhole layered testing, layered injection and layered production. The use of packers can separate unused pressure systems to realize production plans for different pressure systems. In the related art, there are some problems or defects in the design of packers.

[0007] 1. With the popularity of rodless oil production equipment such as submersible electric pumps and submersible screw pumps, these devices rely on long-distance cables to transmit electricity to downhole motors to achieve continuous and stable power supply. However, the lowering of cables places higher demands on the design of the packer. The design of traditional packers does not fully consider the convenience and sealing of cable crossing, resulting in problems such as wear, leakage and even jamming when the cable passes through the packer in actual applications, which seriously affects the safety and efficiency of operations. Therefore, how to design a packer that can effectively isolate different formation pressures and ensure the safe and smooth crossing of the cable has become a technical problem that needs to be solved urgently.

[0008] 2. With the popularity of rodless oil production equipment such as submersible electric pumps and submersible screw pumps, these devices rely on long-distance cables to transmit electricity to downhole motors to achieve continuous and stable power supply. However, the lowering of cables places higher demands on the design of the packer. The design of traditional packers does not fully consider the convenience and sealing of cable crossing, resulting in problems such as wear, leakage and even jamming when the cable passes through the packer in actual applications, which seriously affects the safety and efficiency of operations. Therefore, how to design a packer that can effectively isolate different formation pressures and ensure the safe and smooth crossing of the cable has become a technical problem that needs to be solved urgently.

[0009] 3. In the process of oil and gas production, the packer not only needs to cope with the conventional working conditions of high pressure in the tubing string and low pressure in the annulus between the tubing and casing in traditional stratified water injection operations, but also needs to adapt to the special needs of complex well conditions such as high pressure in the annulus and low pressure in the tubing string in the multi-layer pressure system production. Especially in the case of co-production of tight gas reservoirs and coalbed methane reservoirs, the annulus may be subjected to high-pressure tight gas, while the tubing is low-pressure coalbed methane. This huge difference in internal and external pressures places extremely high demands on the pressure-bearing capacity, sealing performance and stability of the packer. If the packer is improperly designed or the material selection is unreasonable, it is very easy to cause problems such as sealing failure and oil and gas crossflow, which seriously affect the production effect and safe production. Therefore, the development of a packer that can adapt to extreme pressure differences, has excellent sealing performance and long-term stability is the key to improving the benefits of oil and gas field development. Summary of the invention

[0010] Since the gas properties at different levels are different, simultaneous exploitation in the same well has a great impact on the production capacity of each layer and the subsequent reproduction work. For this reason, it is necessary to use packers to separate different reservoirs and perform layered tests on different production layers. However, due to the use of ordinary packers in the past, it is impossible to pass the cable through, and the existing cable separators cannot guarantee complete sealing due to the passage of the cable. Moreover, when multiple pressure systems are used for coordinated exploitation, the eccentric packer cannot realize the lowering of multiple layers of oil pipes. At the same time, due to the long-term use of the packer, the internal parts of the packer age, and the packer sometimes cannot be unsealed normally. In response to the above problems, the present invention proposes an electromagnetic cable packer.

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

[0012] A center pipe string, which can be connected to form a coiled tubing;

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

[0014] Cable connection part:

[0015] It includes a cable connecting device for connecting a plurality of cables to form a cable line;

[0016] Electromagnetic conversion unit:

[0017] Including iron core;

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

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

[0020] Locking part;

[0021] An upper buckle ring, arranged below the magnet, having upper buckle ring buckle teeth;

[0022] A lower buckle ring, arranged below the upper buckle ring, having lower buckle ring buckle teeth;

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

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

[0025] Compression rubber cylinder:

[0026] Includes: compression rubber cartridge spacer;

[0027] A compression rubber cylinder, wherein the compression rubber cylinder partition is arranged on the compression rubber cylinder;

[0028] Slips, the slips are arranged on the outer periphery of the central column, and a second accommodating cavity is formed in the slips;

[0029] An unsealing shear pin, wherein the unsealing shear pin is disposed in the second accommodating cavity;

[0030] A movable ring, the movable ring being arranged in the second accommodating cavity;

[0031] Cable conversion department:

[0032] Includes: cable conversion device;

[0033] A blocking ring is arranged at the upper and lower ends of the cable conversion device.

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

[0035] The central pipe string can be connected with the connecting thread through the coupling to form the coiled tubing.

[0036] Furthermore, the central pipe 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 connecting portion to the cable conversion portion;

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

[0039] The barrier ring ribs are used to fix the barrier ring.

[0040] Furthermore, the cable connection part further includes:

[0041] A rubber pad, which is arranged at the end of the shell and between the shell and the central column;

[0042] A sealing screw, the sealing screw is formed with the housing, the rubber pad and the central column;

[0043] The cable connector is arranged in the shell.

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

[0045] The locking portion further comprises:

[0046] A spring, the spring being arranged at an end of the upper buckle ring;

[0047] The eardrum is connected between the upper buckle ring mainboard and the outer shell and is used for sealing the interior of the shell.

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

[0049] A protective shell, which is arranged outside the cable conversion device and is used to isolate the cable conversion device from the external environment;

[0050] The barrier ring comprises an upper barrier ring and a lower barrier ring, and the lower barrier ring is provided with three cable transfer interfaces;

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

[0052] A fastening screw is fixed to the upper blocking ring and the peripheral side of the upper blocking ring.

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

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

[0055] 1. The present invention proposes two packer unsealing methods, which greatly avoids the problem that the packer cannot be unsealed normally.

[0056] 2. An electromagnetic cable packer is proposed, which uses the magnetic force generated in the device to push the upper snap ring to squeeze the compression rubber cylinder to complete the sealing.

[0057] 3. The present invention proposes to divide the cable into multiple sub-parts, and connect them to the electromagnetic packer respectively, so as to realize the "penetration" of the cable through the packer through the conductive medium in the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0061] Figure 4 A schematic diagram of the structure of a central pipe string of an electromagnetic cable packer according to some embodiments is shown;

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

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

[0064] Figure 7 A schematic structural diagram of a lower blocking ring of an electromagnetic cable packer according to some embodiments is shown.

[0065] In the above figures, 1, center column; 2, cable lead-in device; 3, housing; 17, rubber pad; 18, sealing screw; 19, cable connector; 101, center tube wall; 102, coupling; 103, cable channel; 104, lower snap ring rib; 105, barrier ring rib; 106, connecting thread; 20, setting shear pin; 21, spring; 22, tympanic membrane; 801, upper snap ring sub-plate; 802, upper snap ring main plate; 803, upper snap ring Ring tooth; 901, lower snap ring tooth; 4, fixing screw; 5, iron core; 6, coil; 7, magnet; 8, upper snap ring; 9, lower snap ring; 10, compression rubber cylinder partition; 11, compression rubber cylinder; 12, unsealing shear nail; 13, slip; 14, movable ring; 15, cable conversion device; 16, lower blocking ring; 23, protective shell; 24, fastening screw; 25, upper blocking ring; 1601, fixing screw hole; 1602, cable connection hole. DETAILED DESCRIPTION

[0066] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0067] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0068] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0069] In the description of this application, 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 application can be understood according to specific circumstances.

[0070] Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings.

[0071] Reference Figure 1 Since the properties of gases in different layers are different, simultaneous exploitation in the same well has a great impact on the production capacity of each layer and the subsequent reproduction work. For this reason, it is necessary to use packers to separate different reservoirs and perform layered tests on different production layers. However, due to the use of ordinary packers in the past, it is impossible to pass the cable through, and the existing cable separators cannot guarantee complete sealing due to the passage of the cable. Moreover, when multiple pressure systems are used for coordinated exploitation, the eccentric packer cannot realize the lowering of multiple layers of oil pipes. At the same time, due to the long-term use of the packer, the internal parts of the packer age, and the packer sometimes cannot be unsealed normally. In response to the above problems, the present invention proposes an electromagnetic cable packer.

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

[0073] A central tubular column 1, which can be connected to form a continuous oil pipe; a housing 3, which is used for isolation from the outside, and is arranged on the outer periphery of the central tubular column 1, and forms a first accommodation cavity between the housing 3 and the central tubular column 1;

[0074] Cable connection part: including a cable connection device 2, used to connect multiple cables to form a cable line;

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

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

[0077] The compression rubber cylinder part includes: a compression rubber cylinder partition 10; a compression rubber cylinder 11, and the compression rubber cylinder partition 10 is arranged on the compression rubber cylinder 11;

[0078] The slip 13 is arranged on the outer periphery of the central column 1, and a second accommodating cavity is formed in the slip 13;

[0079] An unsealing shear pin 12 is disposed in the second accommodating cavity;

[0080] A moving ring 14, wherein the moving ring 14 is disposed in the second accommodating cavity;

[0081] The cable conversion part comprises: a cable conversion device 15; and a blocking ring, which is arranged at the upper and lower ends of the cable conversion device 15.

[0082] Specifically, the electromagnetic cable packer is mainly divided into an electromagnetic connection part, an electromagnetic conversion part, a locking part, a compression rubber tube part and a cable conversion part, and the above modules are fixed in the axial direction of the central pipe column 1 in sequence.

[0083] Specifically, if Figure 3 As shown, the external cables are connected via a cable connector 19, which is adjacent to the cable lead-in device 2 and can realize voltage division and line conversion within the device.

[0084] The upper shell 3 can isolate the internal device from the external environment. The rubber pad 17 acts between the upper shell 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, a coupling 102 is provided at one end of the central pipe string 1, and a connecting thread 106 is provided at the other end; the central pipe string 1 can be connected to the connecting thread 106 through the coupling 102 to form a continuous oil pipe.

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

[0087] Below the cable lead-in device 22 is an iron core 5, around which a coil 6 is wound. The coil 6 is energized by the voltage division of the cable lead-in device 2. The magnetic field generated by the energization of the coil 6 magnetizes the iron core 5 and acts on the magnet 7 below to push the upper buckle ring. Figure 2 and 5As shown, the sealing shear pins 20 are cut off during the pushing process, and as the upper snap ring 8 moves and gradually contacts the lower snap ring 9, the upper snap ring teeth 803 on the inner side of the upper snap ring 8 engage with the lower snap ring teeth 901, which can prevent the upper snap ring 8 from retreating and lock it. As the upper snap ring 8 is continuously pushed forward, it pushes the compression rubber cylinder 11 in front. The compression rubber cylinder 11 is made of rubber, which expands and contacts the wall of the oil pipe after being compressed to achieve sealing. The compression rubber cylinder 11 is divided into three working surfaces, which can effectively enhance the friction with the pipe column and make the sealing more reliable. In addition, three compression rubber cylinder partitions 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] Among them, a cable channel 103, a lower snap ring rib 104 and a barrier ring rib 105 are provided on the central pipe column 1 along its axial direction; the cable channel 103 extends from the cable connecting part to the cable conversion part; the lower clamp ring rib 104 is used to fix the lower snap ring 9; and the barrier ring rib 105 is used to fix the barrier ring.

[0089] Specifically, if Figure 4 As shown, the upper end is a coupling 102102, which realizes the docking of the upper pipe column. Around the central pipe column 11 is a cable channel 103, which can realize the transmission of cables through the intermediate pipeline. The lower buckle ring rib 104 can fix the lower buckle ring 9. The barrier ring rib 105 can fix the cable conversion device 15. At the end of the central pipe column 11 is a connecting thread 106, which can realize the docking of the lower pipe column.

[0090] Specifically, if Figure 5 As shown, the magnet 7 moves under the action of the magnetic force generated by the upper iron core 5, and the magnet 7 pushes the upper snap ring 8 and cuts the sealing shear pin 20. The upper snap ring 8 is divided into two layers: the upper snap ring main plate 802, the upper snap ring sub-plate 801 and the upper snap ring sub-plate 801. The front end of the upper snap ring sub-plate 801 has an upper snap ring tooth 803. As the upper snap ring 8 moves, the upper snap ring tooth 803 engages with the lower snap ring tooth 901 of the lower snap ring 9 of the lower layer, wherein the lower snap ring 9 is embedded in the pipe wall 101 to achieve immovability. At the end of the upper snap ring 8 is the eardrum 22, which connects the end of the upper shell 3 and the end of the upper snap ring 8, and can ensure the airtightness of the environment inside the pipe.

[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, the spring 21 is arranged at the end of the upper snap ring 8; a tympanum 22; the tympanum 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 thing in contact with the lower side of the compression rubber cylinder 11 is the slip 13, the slip 13 and the moving ring 14 are connected to each other through threads, and the combination of the slip 13 and the moving ring 14 is fixed by the unsealing shear nail 12. The interaction of the slip 13, the moving ring 14 and the unsealing shear nail 12 fixes the lower side of the compression rubber cylinder 11. Since the cable is transmitted through the intermediary, it is converted by the cable conversion device 15 at the lower side. The lower side of the cable conversion device 15 is adjacent to the barrier ring, which can effectively seal the cable conversion device 15, and the cable conversion device 15 is embedded with a cable adapter to achieve the connection of additional cables.

[0093] Among them, the cable connecting part also includes: a rubber pad 17, which is arranged at the end of the shell 3 and is located between the shell 3 and the central column 1; a sealing screw 18, which is passed through the shell 3, the rubber pad 17 and the central column 1; a cable connector 19, which is arranged in the outer shell 3.

[0094] Among them, the cable conversion device 15 also includes: a protective shell 23, the protective shell 23 is arranged on the periphery of the cable conversion device 15, and is used to isolate the cable conversion device 15 from the external environment; the barrier ring includes an upper barrier ring 25 and a lower barrier ring 16, and the lower barrier ring 16 is provided with three cable transfer interfaces; the upper barrier ring 25 and the lower barrier ring 16 are each provided with three fixing screw holes 1601 on the circumferential surface; the fastening screw 24, the fastening screw 24 is fixed on the upper barrier ring 25 and the circumferential side of the upper barrier ring 25.

[0095] Specifically, if Figure 6 As shown, it is a schematic diagram of the cable conversion cross section, with the upper blocking ring 25 at the upper end, and the cable conversion device 15 next to it, which can convert the intermediate pipeline inside the central pipe column 1 into a wellbore standard cable. At its lower end is the lower blocking ring 16, and the side of the lower blocking ring 16 is provided with three cable conversion interfaces, and the upper blocking ring 25 and the lower blocking ring 16 have three fixing screw holes 1602 on their circumferences. The lower protective shell 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 blocking ring 16 is provided with a fixing screw hole 1601 and a cable connection hole 1602 .

[0097] Specifically, if Figure 7 , which is a schematic 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 achieve the docking of external cables.

[0098] When in use, the following steps are performed:

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

[0100] S2: Lowering the electromagnetic cable packer: Connect the lower thread of the electromagnetic cable packer to the coupling 102 of the oil pipe, connect the upper coupling 102 of the electromagnetic cable packer to the thread of the oil pipe, and connect the cable interfaces at the upper and lower ends of the electromagnetic cable packer to the docking cables. After docking, lower the electromagnetic cable packer to the designated position.

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

[0102] S4: Unsealing of electromagnetic cable packer: There are two ways to unseal the electromagnetic cable packer: 1. Use special working machinery to lift the tubing string, the unsealing shear nails 12 in the electromagnetic cable packer are cut off, the fixed slips 13 move downward, and the expanded rubber tube returns to its original shape to achieve unsealing. 2. Use special working machinery to rotate the tubing string in the opposite direction, the slips 13 and the moving ring 14 are connected by threads, and the slips 13 are moved downward by rotation, and the expanded rubber tube returns to its original shape to achieve unsealing.

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

[0104] 1. The present invention proposes two packer unsealing methods, which greatly avoids the problem that the packer cannot be unsealed normally.

[0105] 2. An electromagnetic cable packer is proposed, which uses the magnetic force generated in the device to push the upper snap ring to squeeze the compression rubber cylinder to complete the sealing.

[0106] 3. The present invention proposes to divide the cable into multiple sub-parts, and connect them to the electromagnetic packer respectively, so as to realize the "penetration" of the cable through the packer through the conductive medium in the pipe.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0108] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An electromagnetic cable packer, characterized in that: include: A center pipe string, which can be connected to form a coiled tubing; A shell, used for isolation from the outside, the shell is arranged on the outer periphery of the central tube column and forms a first accommodating cavity between the shell and the central tube column; Cable connection part: It includes a cable connecting device for connecting a plurality of cables to form a cable line; Electromagnetic conversion unit: It includes an iron core; a coil, wherein the coil is wound around the iron core; A magnet, located below the iron core, capable of moving up and down under the magnetic field generated by the coil; Locking part; An upper buckle ring, arranged below the magnet, having upper buckle ring buckle teeth; A lower buckle ring is arranged below the upper buckle ring and has lower buckle ring teeth; the upper buckle ring teeth and the lower buckle ring teeth can be separated at a first position or engaged at a second position; the upper buckle ring can move between the first position or the second position under the magnetic force of the magnet; Compression rubber cylinder: include: A compressed rubber cylinder partition; a compressed rubber cylinder, wherein the compressed rubber cylinder partition is arranged on the compressed rubber cylinder; Slips, the slips are arranged on the outer periphery of the central column, and a second accommodating cavity is formed in the slips; an unsealing shear pin, the unsealing shear pin being arranged in the second accommodating cavity; a moving ring, the moving ring being arranged in the second accommodating cavity; Cable conversion department: The invention comprises: a cable conversion device; and a blocking ring, wherein the blocking ring is arranged 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 pipe column is provided with a coupling at one end and a connecting thread at the other end; the central pipe column can be connected with the connecting thread through the coupling to form the continuous oil pipe.

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

4. The electromagnetic cable packer according to claim 1, characterized in that: The cable connection part further includes: A rubber pad; the rubber pad is arranged at the end of the shell and is located between the shell and the central column; A sealing screw, wherein the sealing screw is passed through the outer shell, the rubber pad and the central column; and a cable connector, wherein the cable connector is disposed in the outer shell.

5. The electromagnetic cable packer according to claim 1, characterized in that: The upper snap ring also includes an upper snap ring sub-plate and an upper snap ring main plate; The locking portion further comprises: a spring, the spring being arranged at the end of the upper buckle ring; a tympanic membrane; The eardrum is connected between the upper buckle ring mainboard and the outer shell and is used for sealing the interior of the shell.

6. The electromagnetic cable packer according to claim 1, characterized in that: The cable conversion device further includes: a protective housing; The protective shell is arranged on the periphery of the cable conversion device, and is used to isolate the cable conversion device from the external environment; The barrier ring comprises an upper barrier ring and a lower barrier ring, and the lower barrier ring is provided with three cable transfer interfaces; The upper barrier ring and the lower barrier ring are each provided with three fixing screw holes on their circumferential surfaces; tighten the screws; The fastening screws are fixed to the upper blocking ring and the peripheral side of the upper blocking ring.

7. The electromagnetic cable packer according to claim 1, characterized in that: The lower blocking ring is provided with a fixing screw hole and a cable connection hole.

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