Downhole electromagnetic heating paraffin removal and control matching device and system

Abstract

The utility model discloses an underground electromagnetic heating paraffin removal and paraffin control matching device and system, and belongs to the technical field of oil extraction equipment, the matching device comprises an induction coil and a heating element which emits heat under the action of the induction coil, the heating element is a heating cylinder, the outer side face and the inner side face of the heating cylinder are both provided with a plurality of rib plates, and the rib plates are arranged on the outer side face and the inner side face of the heating cylinder. Each rib plate is of a strip-shaped structure extending in the axis direction of the heating cylinder, and the induction coil is wound on the outer side face of the heating cylinder. The system comprises the matching device, a power supply module and an electric connecting wire. The structural design of the scheme is beneficial to the stability, the service life, the power consumption, the response speed and the continuous production of an oil field of an underground electromagnetic heating paraffin removal and paraffin control matching device and system.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production equipment, in particular to an underground electromagnetic heating wax removal and wax prevention matching device and system. Background Art

[0002] During the oilfield exploitation process, the crude oil in certain oil production stages of the oilfield and in the entire stage of some oilfields contains a high proportion of wax. Especially in low temperature environments, the wax will solidify and cause blockage in the oil pipe, seriously affecting the production efficiency of the oilfield. Therefore, during the oilfield production process, wax cleaning and wax prevention are necessary work to ensure the normal production of the oilfield.

[0003] In the prior art, wax cleaning generally refers to removing wax deposits, and wax prevention generally refers to preventing wax deposits. The measures that can be taken for wax cleaning include mechanical wax cleaning, thermal wax cleaning, and chemical wax cleaning. The measures that can be taken for wax prevention include heating wax prevention and electromagnetic wax prevention. Among them, heating the crude oil can not only achieve wax cleaning and wax prevention, but also has the characteristic of not affecting the continuous production of the oil field. It is a technical means commonly used for wax cleaning and wax prevention in oil fields.

[0004] For crude oil heating, previous solutions include external heating of crude oil pipelines through electric heating wires or electric heating belts. At present, the commonly used downhole heating technology mainly adopts electromagnetic heating with high thermal efficiency, stable and reliable performance, and relatively low energy consumption. The heating element usually adopts cylindrical materials. The specific technical solutions are disclosed in the prior art such as patent application numbers: CN200610008307.1, CN201220366457.0, etc. The specific principle is that the induction coil generates an alternating magnetic field under the action of the power module, and the heating element forms eddy currents and generates heat energy under the alternating magnetic field and transfers it to the oil, thereby achieving the purpose of heating the oil.

[0005] The electromagnetic heating wax cleaning and wax prevention equipment is a key equipment to ensure the oil field production efficiency and reduce the operation cost. It is necessary to further optimize the stability and service life of the equipment. Utility Model Content

[0006] Aiming at the optimization problem of underground electromagnetic heating wax cleaning and anti-wax supporting devices and systems, the utility model provides an underground electromagnetic heating wax cleaning and anti-wax supporting device and system. The structural design of this scheme is beneficial to the stability and service life of the underground electromagnetic heating wax cleaning and anti-wax supporting device and system.

[0007] The specific technical solution is: an underground electromagnetic heating wax cleaning and wax prevention supporting device, including an induction coil and a heating element that generates heat under the action of the induction coil, the heating element is a heating tube, and a plurality of ribs are arranged on the outer side and the inner side of the heating tube, each rib is a strip structure extending along the axial direction of the heating tube, and the induction coil is wound on the outer side of the heating tube.

[0008] This solution is a device that uses the principle of electromagnetic induction to convert electrical energy into thermal energy. The specific working principle is: the power module provides a high-frequency changing voltage and current to the induction coil, the induction coil generates an alternating magnetic field, the heating element generates eddy current and generates heat under the action of the alternating magnetic field, and the heating tube provides heat for oil to remove wax and prevent pulling. The specific method of use is: set this supporting device in the waxing section of the underground oil pipeline, the oil flows from the inside of the heating tube or from the inside and outside of the heating tube, the oil and the heating tube perform heat exchange to increase the oil temperature, and achieve the purpose of wax removal and wax prevention.

[0009] Different from the prior art and different from traditional electric heating wires or electric heating belts, electromagnetic heating has the characteristics of high thermal efficiency and fast hot start, and can efficiently heat the heating tube to a higher temperature. Under a higher temperature gradient, the heat exchange energy between the heating tube and the petroleum can achieve the purpose of wax cleaning and wax prevention, thereby saving wax cleaning and wax prevention electricity consumption and quickly achieving wax cleaning and wax prevention conditions.

[0010] Since heating is not required in every stage to remove wax and prevent wax during the entire oil production cycle of the oil well, in this solution, the heating tube is configured to have multiple ribs on the inside and outside. As for the extension direction of the ribs, when the heating tube is installed so that the oil flows along the axial direction of the heating tube at the installation position, the ribs will not cause excessive increase in the oil flow resistance. Therefore, the heating tube in this solution will not cause excessive increase in the oil flow resistance, which is beneficial to ensuring the working efficiency of the pump during oil well production. At the same time, the presence of the above ribs can effectively increase the surface area of ​​the heating tube. Under the same heat exchange energy, the heating tube can have a lower temperature and avoid local overheating of the heating tube. Therefore, this solution is beneficial to protecting the oil pipeline from damage caused by overheating and damage to the supporting device. In this solution, the induction coil is wound on the heating tube. Although the induction coil itself does not generate much heat, the heat conduction between the heating tube and the induction coil will still cause the temperature of the induction coil to rise. Even if the commonly used induction coil cable can withstand high temperatures of hundreds of degrees Celsius, the increase in the temperature of the induction coil will still affect the stability of the heating performance of the supporting device. In this solution, since the outer side of the heating tube has ribs, the gaps between the connected ribs can be used as fluid flow channels or medium cavities. For example, when the supporting device is set on the inner side of an oil production pipeline, the gaps between the ribs on the outer side of the heating tube serve as oil flow channels or filling cavities. Therefore, the oil inside the induction coil can effectively reduce the temperature rise of the induction coil during the operation of the supporting device, making the heating performance of the supporting device more stable and having the characteristics of long service life.

[0011] Different from traditional electric heating wires or electric heating belts, in this solution, the induction coil does not directly generate a lot of heat. Its lower operating temperature does not easily cause the induction coil to age or even break. Its longer working life can effectively ensure continuous production in the oil field.

[0012] In this solution, the heating tube with axial ribs is a specific implementation form of the three-dimensional rib tube. Different from the common three-dimensional rib tube, the structural design of the heating tube is beneficial to the support stability of the induction coil during the temperature change of the heating tube. Therefore, this solution can make the heating performance of the supporting device more stable.

[0013] In a specific embodiment, the heating tube is provided with a partition assembly, which divides the heating tube into a plurality of winding spaces arranged at intervals along the heating tube, and each winding space is wound with an induction coil. In this solution, for an induction coil with a set number of turns, the induction coil is distributed to a plurality of winding spaces, and any winding space is used to constrain the position of the induction coil distributed in the winding space in the axial direction of the heating tube. In this way, during the temperature change process of the supporting device, the position of the induction coil on the heating tube is relatively stable, which can effectively ensure the reliability of the supporting device and the stability of the heating performance.

[0014] In a specific embodiment, the partition assembly includes a plate ring and a partition, and the plate rings are provided at both ends of the heating tube, and the partition is located on the tube section between the two ends of the heating tube. In this solution, the plate ring is provided at the end of the heating tube, and the partition is provided on the tube section of the heating tube, so that the winding space is formed between adjacent plate rings and partitions, and between partitions.

[0015] In a specific embodiment, the plate ring is integrally formed on the heating tube, and the partition is an elastic retaining ring for the shaft. In this solution, the plate ring is integrally formed with the heating tube, and then the elastic retaining ring for the shaft is installed through the annular groove provided on the heating tube. This structural form is not only convenient for manufacturing, but also easy to ensure the manufacturing accuracy of the heating tube and the installation accuracy of the partition on the heating tube.

[0016] In a specific embodiment, for the trough body formed between adjacent rib plates on the outside of the heating tube, a groove or hole located on the plate ring is set for each trough body, so that oil can pass through the plate ring through the groove or hole and enter and exit the trough body, thereby increasing the heat dissipation capacity of the outside of the heating tube and the heat dissipation capacity of the inside of the induction coil. The inner side of the shaft elastic retaining ring is located on the outside of the bottom of the trough body to prevent the shaft elastic retaining ring from cutting off the trough body and affecting the flow of oil in the trough body. This solution is suitable for arranging the supporting device on the inner side of the oil production pipeline.

[0017] In a specific embodiment, the supporting device is configured as a pipe section on an oil production pipeline, specifically: the supporting device also includes an outer cylinder, and the induction coil and the heating cylinder are both fixed on the inner side of the outer cylinder. In this way, the outer cylinder is connected in series to the oil production pipeline, and the supporting device serves as an independent pipe fitting on the oil production pipeline and as a heating pipe section, and the outer cylinder provides a pressure-bearing boundary for the heating pipe section.

[0018] In a specific embodiment, a spoiler is further provided at the inlet end of the heating tube, and the spoiler is located inside the heating tube. In this solution, the spoiler is used to change the flow state of the oil at the inlet end of the heating tube to enhance the heat transfer between the oil and the heating tube.

[0019] In a specific embodiment, it also includes a driving component, and the spoiler is connected to the heating tube through the driving component, and the driving component is used to change the angle of the spoiler relative to the axis of the heating tube. In this scheme, by setting it to also include the driving component, the angle of the spoiler relative to the axis of the heating tube can be adjusted. In this way, when it is not necessary to activate the supporting device, the driving component is used to change the angle to reduce the resistance of the spoiler to the flow of oil, so as to reduce energy consumption in the process of oil extraction and ensure oil production capacity. When it is necessary to activate the supporting device to complete the wax cleaning or prevention of waxing in the waxing section, the driving component is used to change the angle to strengthen the intervention of the spoiler on the flow pattern of oil, so as to achieve the purpose of strengthening the heat transfer between oil and the heating tube.

[0020] In a specific embodiment, the driving component is a bimetallic strip, and the spoiler is connected to the inner wall of the heating tube through the bimetallic strip. The bimetallic strip is: one end of the bimetallic strip is fixedly connected to the heating tube, and the other end of the bimetallic strip is fixedly connected to one end of the spoiler. When the temperature of the bimetallic strip rises, the bimetallic strip is deformed so that the other end of the spoiler rotates toward the center of the heating tube. In this scheme, the bimetallic strip can be heated under the direct action of the magnetic field and deformed under the heat from the heating tube, thereby achieving the purpose of changing the angle. Different from other driving modes, the driving component does not require other additional energy input, the driving component itself is small in size, and the driving component works synchronously with the heating tube. When the supporting device is working, the bimetallic strip is deformed after heating, so that the spoiler greatly changes the flow state of the oil, thereby achieving the purpose of strengthening heat transfer. When the supporting device stops working, the bimetallic strip is deformed, reducing the influence of the spoiler on the flow state of the oil, thereby reducing the flow resistance of the oil.

[0021] In a specific embodiment, it is set that when the bimetallic strip is at 30°C, the shape of the bimetallic strip makes the angle between the spoiler and the axis of the heating tube be 0°. As the temperature of the bimetallic strip increases, the bimetallic strip drives the free end of the spoiler to move toward the middle of the heating tube to enhance the influence of the spoiler on the flow state of the petroleum.

[0022] In a specific embodiment, it also includes a temperature measuring component for measuring the temperature of the oil downstream of the heating tube, and the temperature measuring component includes a patch thermocouple. In this solution, the temperature measuring component is used for temperature control of the supporting device when it is in use. Specifically, the patch thermocouple is a temperature sensing element with little effect on the flow resistance of the oil. It can be installed on the inner wall of the oil pipeline and used to measure the temperature of the oil downstream of the heating tube. The measurement result is used for power control of the induction coil.

[0023] In a specific embodiment, the heating tube is made of a material with good thermal conductivity to enhance the heat dissipation capacity of the heating tube and avoid local high temperature. Specifically, the heating tube is a carbon steel tube.

[0024] In a specific embodiment, in order to better maintain the shape of the heating tube, the heating tube is a cylinder provided with the rib plate, and the heating tube is an integrated structure.

[0025] The underground electromagnetic heating wax removal and wax prevention supporting system includes the supporting device as described in any one of the above items, and also includes an electrical connection line and a power module. The power module is connected to the induction coil through the electrical connection line, and the power module is used to power the induction coil.

[0026] The utility model has the following beneficial effects:

[0027] This solution can save the power consumption of wax cleaning and wax prevention, and quickly achieve wax cleaning and wax prevention working conditions;

[0028] In this solution, the heating tube does not cause excessive increase in the flow resistance of the oil, which is beneficial to ensuring the working efficiency of the pump during the oil well exploitation process;

[0029] This solution is beneficial to protect the oil pipeline from damage caused by overheating and the damage of the supporting equipment;

[0030] This supporting device has the characteristics of stable heating performance and long service life. This solution can effectively ensure the continuous production of oil fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the partial structure of a specific embodiment of the heating tube provided by the present invention;

[0032] Figure 2 A cross-sectional view of a specific embodiment of the heating tube provided by the present invention;

[0033] Figure 3 A schematic structural diagram of a specific embodiment of the underground electromagnetic heating wax removal and wax prevention system provided in this scheme.

[0034] The reference numerals in the accompanying drawings are: 1. power module, 2. induction coil, 3. electrical connection line, 4. partition, 5. plate ring, 6. heating tube, 7. rib plate, 8. spoiler. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the embodiments, but the present invention is not limited to the following embodiments:

[0036] Embodiment 1:

[0037] like Figure 1 , Figure 2 and Figure 3The underground electromagnetic heating wax removal and wax prevention supporting device includes an induction coil 2 and a heating element that generates heat under the action of the induction coil 2. The heating element is a heating tube 6. A plurality of ribs 7 are arranged on the outer side and the inner side of the heating tube 6. Each rib 7 is a strip structure extending along the axial direction of the heating tube 6. The induction coil 2 is wound around the outer side of the heating tube 6.

[0038] This solution is specifically a device that uses the principle of electromagnetic induction to convert electrical energy into thermal energy. The specific working principle is: the power module 1 provides a high-frequency changing voltage and current to the induction coil 2, the induction coil 2 generates an alternating magnetic field, the heating element generates eddy currents and generates heat under the action of the alternating magnetic field, and the heating tube 6 provides heat for oil to remove wax and prevent pulling. The specific method of use is: the supporting device is set in the waxing section of the underground oil pipeline, the oil flows from the inside of the heating tube 6 or from the inside and outside of the heating tube 6, and the oil and the heating tube 6 perform heat exchange to increase the oil temperature to achieve the purpose of wax removal and wax prevention.

[0039] Different from the prior art and different from traditional electric heating wires or electric heating belts, electromagnetic heating has the characteristics of high thermal efficiency and fast hot start, and can efficiently heat the heating tube 6 to a higher temperature. Under a higher temperature gradient, the heat exchange energy between the heating tube 6 and the petroleum can achieve the purpose of wax cleaning and wax prevention, thereby saving wax cleaning and wax prevention electricity consumption and quickly achieving wax cleaning and wax prevention working conditions.

[0040] Since heating is not required in every stage to remove wax and prevent wax during the entire oil production cycle of the oil well, in this solution, the heating tube 6 is provided with multiple ribs 7 on both the inside and outside. As for the extension direction of the ribs 7, when the heating tube 6 is installed so that the oil flows along the axial direction of the heating tube 6 at the installation position, the ribs 7 will not cause excessive increase in the oil flow resistance. Therefore, the heating tube 6 in this solution will not cause excessive increase in the oil flow resistance, which is beneficial to ensuring the working efficiency of the pump during oil well production. At the same time, the presence of the ribs 7 can effectively increase the surface area of ​​the heating tube 6. Under the same heat exchange energy, the heating tube 6 can have a lower temperature and avoid local overheating of the heating tube 6. Therefore, this solution is beneficial to protecting the oil pipeline from damage caused by overheating and the damage to the supporting device. In this solution, the induction coil 2 is wound on the heating tube 6. Although the induction coil 2 itself does not generate much heat, the heat conduction between the heating tube 6 and the induction coil 2 will still cause the temperature of the induction coil 2 to rise. Even if the commonly used induction coil 2 cable can withstand high temperatures of hundreds of degrees Celsius, the increase in the temperature of the induction coil 2 will still affect the stability of the heating performance of the supporting device. In this solution, since the outer side of the heating tube 6 has a rib plate 7, the gap between the connected rib plates 7 can be used as a fluid flow channel or a medium cavity. For example, when the supporting device is set on the inner side of an oil production pipeline, the gap between the rib plates 7 on the outer side of the heating tube 6 serves as a flow channel or a filling cavity for oil. Therefore, the oil inside the induction coil 2 can effectively reduce the temperature rise of the induction coil 2 during the operation of the supporting device, so that the heating performance of the supporting device is more stable and has the characteristics of a long service life.

[0041] Different from the traditional electric heating wire or electric heating belt, in this solution, the induction coil 2 does not directly generate a large amount of heat, and its lower operating temperature does not easily cause the induction coil 2 to age or even break, and its longer working life can effectively ensure the continuous production of the oil field.

[0042] In this solution, the heating tube 6 with the axial rib plate 7 is a specific implementation form of the three-dimensional rib tube. Different from the common three-dimensional rib tube, the structural design of the heating tube 6 is beneficial to the supporting stability of the induction coil 2 during the temperature change of the heating tube 6. Therefore, this solution can make the heating performance of the supporting device more stable.

[0043] More specifically, the heating tube 6 is provided with a partition assembly, which divides the heating tube 6 into a plurality of winding spaces arranged at intervals along the heating tube 6, and each winding space is wound with an induction coil 2. In this solution, for an induction coil 2 with a set number of turns, the induction coil 2 is distributed to a plurality of winding spaces, and any winding space is used to constrain the position of the induction coil 2 distributed in the winding space in the axial direction of the heating tube 6. In this way, during the temperature change process of the supporting device, the position of the induction coil 2 on the heating tube 6 is relatively stable, which can effectively ensure the reliability of the supporting device and the stability of the heating performance.

[0044] In more detail, the partition assembly includes a plate ring 5 and a partition 4, both ends of the heating tube 6 are provided with a plate ring 5, and the partition 4 is located on the tube section between the two ends of the heating tube 6. In this solution, the plate ring 5 is provided at the end of the heating tube 6, and the partition 4 is provided on the tube section of the heating tube 6, so that the winding space is formed between adjacent plate rings 5 ​​and partitions 4, and between partitions 4.

[0045] In more detail, the plate ring 5 is integrally formed on the heating tube 6, and the partition 4 is an elastic retaining ring for the shaft. In this solution, the plate ring 5 is integrally formed with the heating tube 6, and then the elastic retaining ring for the shaft is installed through the annular groove set on the heating tube 6. This structural form is not only convenient to manufacture, but also easy to ensure the manufacturing accuracy of the heating tube 6 and the installation accuracy of the partition 4 on the heating tube 6.

[0046] In more detail, for the trough body formed between the adjacent rib plates 7 on the outside of the heating tube 6, a groove or hole is set on the plate ring 5 for each trough body, so that the oil can pass through the plate ring 5 through the groove or hole to enter and exit the trough body, thereby increasing the heat dissipation capacity of the outside of the heating tube 6 and the heat dissipation capacity of the inside of the induction coil 2. The inner side of the shaft elastic retaining ring is located on the outside of the bottom of the trough body to prevent the shaft elastic retaining ring from cutting off the trough body and affecting the flow of oil in the trough body. This solution is suitable for arranging the supporting device on the inner side of the oil production pipeline.

[0047] In more detail, the supporting device is set as a pipe section on the oil production pipeline, specifically: the supporting device also includes an outer cylinder, the induction coil 2 and the heating cylinder 6 are fixed on the inner side of the outer cylinder, so that the outer cylinder is connected in series to the oil production pipeline, the supporting device serves as an independent pipe fitting on the oil production pipeline and as a heating pipe section, and the outer cylinder provides a pressure-bearing boundary for the heating pipe section.

[0048] More specifically, it also includes a spoiler 8 disposed at the inlet end of the heating tube 6, and the spoiler 8 is located on the inner side of the heating tube 6. In this solution, the spoiler 8 is used to change the flow state of the oil at the inlet end of the heating tube 6 to enhance the heat transfer between the oil and the heating tube 6.

[0049] More specifically, it also includes a driving component, and the spoiler 8 is connected to the heating tube 6 through the driving component, and the driving component is used to change the angle of the spoiler 8 relative to the axis of the heating tube 6. In this solution, by setting it to also include the driving component, the angle of the spoiler 8 relative to the axis of the heating tube 6 can be adjusted. In this way, when it is not necessary to activate the supporting device, the driving component is used to change the angle to reduce the resistance of the spoiler 8 to the flow of oil, so as to reduce the energy consumption in the oil production process and ensure the oil production capacity. When it is necessary to activate the supporting device to complete the wax cleaning or prevention of waxing in the waxing section, the driving component is used to change the angle to strengthen the intervention of the spoiler 8 on the oil flow pattern, so as to achieve the purpose of strengthening the heat transfer between the oil and the heating tube 6.

[0050] In more detail, the driving component is a bimetallic strip, and the spoiler 8 is connected to the inner wall of the heating tube 6 through the bimetallic strip. The bimetallic strip is: one end of the bimetallic strip is fixedly connected to the heating tube 6, and the other end of the bimetallic strip is fixedly connected to one end of the spoiler 8. When the temperature of the bimetallic strip rises, the bimetallic strip is deformed so that the other end of the spoiler 8 rotates toward the center of the heating tube 6. In this scheme, the bimetallic strip can be heated under the direct action of the magnetic field and heated up by the heat from the heating tube 6 and deformed, thereby achieving the purpose of changing the angle. Different from other driving modes, the driving component does not require other additional energy input, the driving component itself is small in size, and the driving component works synchronously with the heating tube 6. When the supporting device is working, the bimetallic strip is deformed after heating up, so that the spoiler 8 greatly changes the flow state of the oil, thereby achieving the purpose of strengthening heat transfer. When the supporting device stops working, the bimetallic strip is deformed, reducing the influence of the spoiler 8 on the flow state of the oil, thereby reducing the flow resistance of the oil.

[0051] In more detail, when the bimetallic strip is at 30°C, the shape of the bimetallic strip makes the angle between the spoiler 8 and the axis of the heating tube 6 be 0°. As the temperature of the bimetallic strip increases, the bimetallic strip drives the free end of the spoiler 8 to move toward the middle of the heating tube 6 to enhance the influence of the spoiler 8 on the flow state of the oil.

[0052] More specifically, it also includes a temperature measuring component for measuring the temperature of the oil downstream of the heating tube 6, and the temperature measuring component includes a patch type thermocouple. In this solution, the temperature measuring component is used for temperature control of the supporting device when it is in use. Specifically, the patch type thermocouple is a temperature sensing element with little effect on the flow resistance of the oil, which can be installed on the inner wall of the oil pipeline and used to measure the temperature of the oil downstream of the heating tube 6. The measurement result is used for power control of the induction coil 2.

[0053] More specifically, the heating tube 6 is made of a material with good thermal conductivity to enhance the heat dissipation capability of the heating tube 6 and avoid local high temperature. Specifically, the heating tube 6 is a carbon steel tube.

[0054] In more detail, in order to better maintain the shape of the heating tube 6, the heating tube 6 is a cylinder provided with the rib plate 7, and the heating tube 6 is an integrated structure.

[0055] The underground electromagnetic heating wax removal and wax prevention supporting system includes the supporting device as described in any one of the above items, and also includes an electrical connection line 3 and a power module 1. The power module 1 is connected to the induction coil 2 through the electrical connection line 3, and the power module 1 is used to supply power to the induction coil 2.

[0056] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific embodiments of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, other embodiments derived without departing from the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An underground electromagnetic heating wax removal and wax prevention device, comprising an induction coil (2) and a heating element that generates heat under the action of the induction coil (2), characterized in that: The heating element is a heating tube (6), and a plurality of ribs (7) are provided on the outer side and the inner side of the heating tube (6), and each rib (7) is a strip-shaped structure extending along the axial direction of the heating tube (6). The induction coil (2) is wound around the outer side of the heating tube (6).

2. The underground electromagnetic heating wax removal and wax prevention device according to claim 1 is characterized in that: The heating tube (6) is provided with a partition assembly, wherein the partition assembly divides the heating tube (6) into a plurality of winding spaces arranged at intervals along the heating tube (6), and an induction coil (2) is wound in each winding space.

3. The underground electromagnetic heating wax removal and wax prevention device according to claim 2 is characterized in that: The partition assembly comprises a plate ring (5) and a partition plate (4), the plate rings (5) are provided at both ends of the heating tube (6), and the partition plate (4) is located on the tube section between the two ends of the heating tube (6).

4. The underground electromagnetic heating wax removal and wax prevention device according to claim 3 is characterized in that: The plate ring (5) is integrally formed on the heating tube (6), and the partition plate (4) is an elastic retaining ring for the shaft.

5. The underground electromagnetic heating wax removal and wax prevention device according to claim 1 is characterized in that: It also comprises a spoiler (8) arranged at the inlet end of the heating tube (6), wherein the spoiler (8) is located on the inner side of the heating tube (6).

6. The underground electromagnetic heating wax removal and wax prevention device according to claim 5 is characterized in that: It also comprises a driving assembly, wherein the spoiler (8) is connected to the heating tube (6) via the driving assembly, and the driving assembly is used to change the angle of the spoiler (8) relative to the axis of the heating tube (6).

7. The underground electromagnetic heating wax removal and wax prevention device according to claim 6 is characterized in that: The driving component is a bimetallic strip, and the spoiler (8) is connected to the inner wall of the heating tube (6) via the bimetallic strip. The bimetallic strip has one end fixedly connected to the heating tube (6), and the other end fixedly connected to one end of the spoiler (8). When the temperature of the bimetallic strip increases, the bimetallic strip is deformed so that the other end of the spoiler (8) rotates toward the center of the heating tube (6).

8. The underground electromagnetic heating wax removal and wax prevention device according to claim 1 is characterized in that: It also includes a temperature measuring component for measuring the temperature of the oil downstream of the heating tube (6), and the temperature measuring component includes a patch type thermocouple.

9. The underground electromagnetic heating wax removal and wax prevention device according to any one of claims 1 to 8, characterized in that: The heating tube (6) is a carbon steel tube.

10. The underground electromagnetic heating wax removal and wax prevention system is characterized by: The supporting device comprises any one of claims 1 to 9, and further comprises an electrical connection line (3) and a power module (1), wherein the power module (1) is connected to the induction coil (2) via the electrical connection line (3), and the power module (1) is used to supply power to the induction coil (2).

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