An electromagnetic wax removal and blockage removal device for oil pipelines

Abstract

The utility model provides an electromagnetic wax cleaning and unblocking device for oil pipelines, which relates to the technical field of unblocking devices and comprises a diesel generator. A power cable is arranged on the left side of the diesel generator, and a medium-frequency power supply is fixedly installed on the left side of the power cable, so as to achieve a better use effect. When in use, there is no need to excavate earthwork, and the oil pipeline under the ground can be directly heated, which greatly saves time and cost. The heating power and heating temperature are adjustable to meet the needs of unblocking pipelines of different properties, such as oil pipelines, steam pipelines, and water pipelines. The utility model has an over-temperature protection function to prevent over-temperature from causing damage to the user's pipeline and insulation layer. After a fault occurs, the fault information will be displayed on the intelligent control touch screen and an alarm will be issued, which is convenient for staff to handle. When the unblocking process is running, there is no open flame, the heating device itself does not generate heat, and the heating body is the oil pipeline itself, so it is safe and reliable with high thermal efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of unblocking devices, in particular to an electromagnetic wax clearing and unblocking device for an oil pipeline. Background Art

[0002] In the process of oil extraction, the crude oil produced by the oil wells is usually transported by pipeline and sent to the transfer station for centralized recovery. After preliminary treatment, it is sent to the joint station for dehydration and metering. The oil pipeline is usually buried below 1m underground for antifreeze and heat preservation. Due to the long-term transportation of crude oil, the paraffin and colloidal asphalt in the oil will gradually adhere to the inner wall of the pipeline, causing the pipeline transportation space to become smaller and smaller, and the delivery pump pressure to become higher and higher. If there are special circumstances such as power outages and flooding, the crude oil in the pipeline will stop flowing and the temperature will drop, which will condense and block the pipeline. In order to ensure that the pipeline resumes normal production, it is necessary to use a low-cost and high-efficiency method to dredge the pipeline, which is less practical and needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: an electromagnetic wax cleaning and unblocking device for an oil pipeline, comprising a diesel generator, a power cable is arranged on the left side of the diesel generator, a medium frequency power supply is fixedly installed on the left side of the power cable, a neutral and live wire is arranged on the left side of the medium frequency power supply, a transfer station end connection point is arranged on the left side of the neutral and live wire, a wellhead end connection point is arranged on the right side of the diesel generator, an oil production wellhead is arranged on the right side of the wellhead end connection point, an oil pipeline A is arranged on the left side of the oil production wellhead, and a crude oil transfer station is arranged on the left side of the transfer station end connection point.

[0005] Preferably, the medium frequency power supply is provided with a frequency conversion system, a PLC control system, and a temperature control instrument, which makes it more convenient to use the medium frequency power supply.

[0006] Preferably, the neutral and live wires are connected to the transfer station end connection point and the wellhead end connection point through a circuit connector. Here, it is more convenient to use the transfer station end connection point and the wellhead end connection point.

[0007] Preferably, the neutral and live wires are connected to the output end of the medium frequency power supply, and the medium frequency power supply is connected to the diesel generator via a power cable. Here, it is more convenient to use the medium frequency power supply.

[0008] Preferably, the high-frequency current forms a loop through the oil pipeline A. Here, the oil pipeline A is more convenient to use.

[0009] Preferably, the frequency conversion system can rectify 380V 50Hz AC power into DC power. Here, it is more convenient for the frequency conversion system to perform conversion.

[0010] Preferably, the temperature control instrument constantly monitors the temperature change of the oil pipeline A during heating. Here, the oil pipeline A is better protected.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] The utility model realizes better use effect by arranging a diesel generator, a power cable, a medium frequency power supply, a neutral wire, a transfer station end connection point, a wellhead end connection point, an oil production wellhead, an oil pipeline A, a crude oil transfer station, a frequency conversion system, a PLC control system and a temperature control instrument. When in use, there is no need to excavate earth, and the oil pipeline under the ground is directly heated, which greatly saves time and cost. The heating power and heating temperature are adjustable to meet the needs of unblocking pipelines of different properties, such as: oil pipelines, steam pipelines, and water pipelines. It has an over-temperature protection function to prevent over-temperature from causing damage to the user's pipeline and insulation layer. After a fault occurs, the fault information will be displayed on the intelligent control touch screen and an alarm will be issued to facilitate staff processing. There is no open flame when the unblocking process is running, and the heating device itself does not generate heat. The heating element is the oil pipeline itself, so it is safe and reliable with high thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model proposes a schematic diagram of an electromagnetic heating wax removal and unblocking process for an oil pipeline, which is a device for electromagnetic wax removal and unblocking of an oil pipeline;

[0014] Figure 2 The utility model provides an electromagnetic wax cleaning and unblocking device for oil pipelines, and an electrical principle diagram of the electromagnetic heating wax cleaning and unblocking process for oil pipelines.

[0015] Legend:

[0016] 1. Diesel generator; 2. Power cable; 3. Medium frequency power supply; 4. Neutral and live wires; 5. Transfer station end connection point; 6. Wellhead end connection point; 7. Oil production wellhead; 8. Oil pipeline A; 9. Crude oil transfer station; 10. Frequency conversion system; 11. PLC control system; 12. Temperature control instrument. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0019] Example

[0020] See also Figure 1-2The utility model provides a technical solution: an electromagnetic wax removal and unblocking device for oil pipelines, comprising a diesel generator, a power cable is arranged on the left side of the diesel generator, a medium frequency power supply is fixedly installed on the left side of the power cable, a zero-live line is arranged on the left side of the medium frequency power supply, a transfer station end connection point is arranged on the left side of the zero-live line, a wellhead end connection point is arranged on the right side of the diesel generator, an oil production wellhead is arranged on the right side of the wellhead end connection point, an oil pipeline A is arranged on the left side of the oil production wellhead, and a crude oil transfer station is arranged on the left side of the transfer station end connection point. By arranging the diesel generator, the power cable, the medium frequency power supply, the zero-live line, the transfer station end connection point and the transfer station end connection point, the oil pipeline A is arranged on the left side of the oil production wellhead, and the crude oil transfer station is arranged on the left side of the transfer station end connection point. The oil pipeline under the ground can be directly heated without excavation, which greatly saves time and cost. The heating power and heating temperature are adjustable to meet the needs of unblocking pipelines of different natures, such as oil pipelines, steam pipelines, and water pipelines. It has an over-temperature protection function to prevent over-temperature from causing damage to the user's pipeline and insulation layer. When a fault occurs, it will be displayed on the intelligent control touch screen. Fault information and alarm are issued to facilitate staff handling. There is no open flame during the operation of the unblocking process, and the heating device itself does not generate heat. The heating element is the oil pipeline itself, so it is safe and reliable with high thermal efficiency. The medium frequency power supply is equipped with a frequency conversion system, a PLC control system, and a temperature control instrument, which makes it more convenient to use the medium frequency power supply and prevents the medium frequency power supply from being unable to be used normally due to excessive temperature inside the medium frequency power supply during use. The zero and live wires are connected to the transfer station end connection point and the wellhead end connection point through the circuit connector, which is more convenient. It is convenient for the transfer station end connection point and the wellhead end connection point to be used, and avoids the situation that the transfer station end connection point and the wellhead end connection point cannot be used normally due to the fact that they are not powered on. The neutral and live wires are connected to the output end of the medium frequency power supply, and the medium frequency power supply is connected to the diesel generator through a power cable, which is more convenient for the use of the medium frequency power supply and prevents the situation that the medium frequency power supply cannot be used normally due to the fact that it is not powered on during use. The high-frequency current forms a loop through the oil pipeline A, which is more convenient for the use of the oil pipeline A. The high-frequency current forms a loop through the oil pipeline.Under the action of high-frequency changing magnetic field, the steel pipeline produces skin effect and generates heat, and the heat is absorbed by the crude oil in the oil pipeline. The temperature of the crude oil that absorbs heat gradually increases, and the viscosity gradually decreases, thereby achieving the purpose of clearing wax and unblocking the oil pipeline. The frequency conversion system can rectify 380V50Hz AC into DC, which is more convenient for the frequency conversion system to convert, rectify 380V50Hz AC into DC, and then convert DC into controllable high-frequency AC output through a resonant circuit. The temperature control instrument always monitors the temperature changes of the oil pipeline A heating to better protect the oil pipeline A8. When the oil pipeline reaches the set over-temperature value, the intelligent control system will immediately cut off the power supply, stop the device operation, and send out an alarm signal.

[0021] Working principle: When the oil pipeline A8 inside the crude oil transfer station 9 is blocked and cannot transport crude oil, the construction personnel will conduct on-site inspections according to the user's request and communicate with the transfer station management personnel to find out the direction and specifications of the oil pipeline A8. Then the diesel generator 1, the medium frequency power supply 3, the power cable 2, the neutral and live wires 4, and the fixtures of the circuit connector transfer station end connection point 5 and the wellhead end connection point 6 are sent to the site. The diesel generator 1 is connected to the medium frequency power supply 3 through the power cable 2. The neutral and live wires 4 at the output end of the medium frequency power supply 3 are respectively connected to the oil pipeline A8 exposed on the ground with the circuit connector transfer station end connection point 5 and the wellhead end connection point 6. The diesel generator 1 is started to supply power to the medium frequency power supply 3. The construction personnel gradually adjust the heating power and output frequency through the medium frequency power supply 3 PLC control system 10 to make the output electric energy consistent with the site. Pipeline matching allows the oil pipeline A8 to generate the maximum skin effect heating, quickly increases the temperature of the liquid in the oil pipeline A8, achieves the purpose of clearing wax and unblocking the oil pipeline A8, and makes the oil production wellhead 7 more convenient to use. The heating temperature of the oil pipeline A8 in the thin oil block is about 50°C, and the unblocking temperature of the oil pipeline A8 in the heavy oil and super heavy oil blocks must be greater than 70°C. The frequency conversion system 10 can rectify 380V50Hz AC into DC, and then convert the DC into controllable high-frequency AC output through the resonant circuit. The high-frequency current passes through the oil pipeline A8 to form a loop. Under the action of the high-frequency changing magnetic field, the steel pipeline generates skin effect and generates heat, and the heat is absorbed by the crude oil in the oil pipeline A8. The temperature of the crude oil that absorbs the heat gradually increases, and the viscosity gradually decreases, thereby achieving the purpose of clearing wax and unblocking the oil pipeline A8. The temperature control instrument 12 in the process device always monitors the temperature change of the pipeline heating. When the oil pipeline A8 reaches the set over-temperature value, the intelligent temperature control instrument 12 will immediately cut off the power supply, stop the device operation, and send out an alarm signal. When the heating temperature reaches the unblocking temperature, in order to ensure the unblocking effect, the constant temperature heating is carried out for a period of time, and then the unblocking construction is ended.

[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An electromagnetic wax removal and unblocking device for oil pipelines, comprising a diesel generator (1) and a high-frequency current, characterized in that: A power cable (2) is arranged on the left side of the diesel generator (1), a medium frequency power supply (3) is fixedly installed on the left side of the power cable (2), a neutral line (4) is arranged on the left side of the medium frequency power supply (3), a transfer station end connection point (5) is arranged on the left side of the neutral line (4), a wellhead end connection point (6) is arranged on the right side of the diesel generator (1), an oil production wellhead (7) is arranged on the right side of the wellhead end connection point (6), an oil pipeline A (8) is arranged on the left side of the oil production wellhead (7), and a crude oil transfer station (9) is arranged on the left side of the transfer station end connection point (5).

2. The electromagnetic wax removal and unblocking device for oil pipeline according to claim 1 is characterized by: The medium frequency power supply (3) is provided with a frequency conversion system (10) inside, the medium frequency power supply (3) is provided with a PLC control system (11) inside, and the medium frequency power supply (3) is provided with a temperature control instrument (12) inside.

3. The electromagnetic wax removal and unblocking device for oil pipeline according to claim 1 is characterized by: The neutral and live wires (4) are connected to the transfer station end connection point (5) and the wellhead end connection point (6) through a circuit connector.

4. The electromagnetic wax removal and unblocking device for oil pipeline according to claim 1 is characterized by: The neutral and live wires (4) are connected to the output end of the medium frequency power supply (3), and the medium frequency power supply (3) is connected to the diesel generator (1) via a power cable (2).

5. The electromagnetic wax removal and unblocking device for oil pipeline according to claim 1 is characterized by: The high-frequency current passes through the oil pipeline A (8) to form a loop.

6. The electromagnetic wax removal and unblocking device for oil pipeline according to claim 2 is characterized by: The frequency conversion system (10) can rectify 380V 50Hz alternating current into direct current.

7. The electromagnetic wax removal and unblocking device for oil pipeline according to claim 2 is characterized by: The temperature control instrument (12) constantly monitors the temperature change of the oil pipeline A (8) during heating.

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