A skid-mounted wellhead electromagnetic heater

Abstract

This utility model relates to the field of oil extraction equipment technology, and in particular to a skid-mounted wellhead electromagnetic heater, comprising a skid-mounted base, a circulation pump mounted on top of the skid-mounted base, an electromagnetic coil integrated and wound on the outer wall of the circulation pump, and a PLC controller and matching control components mounted on top of the skid-mounted base. The control components monitor the temperature and pressure parameters of the crude oil in the circulation pump in real time, and the PLC controller adjusts the alternating magnetic field strength of the electromagnetic coil according to the collected parameters. This utility model uses a skid-mounted integrated combination method, with the circulation pump and PLC controller fixed by the skid-mounted base. Crude oil enters the circulation pump, and the pressure and temperature of the crude oil in the circulation pump are monitored in real time. The PLC controller controls the electromagnetic coil to heat the crude oil in the circulation pump, thereby integrating all the structures into one unit, improving the convenience of heater installation and transportation, while ensuring uniform heating and increasing the safety of crude oil heating treatment.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction equipment technology, and in particular to a skid-mounted wellhead electromagnetic heater. Background Technology

[0002] During oil extraction, the crude oil produced from the wellhead often has high viscosity, especially in some oil wells with high wax content. The crude oil has extremely poor fluidity at low temperatures, which brings great difficulties to the transportation and subsequent processing of crude oil. Therefore, in order to ensure the normal transportation of crude oil, it is necessary to heat the crude oil.

[0003] Traditional wellhead heating methods, such as open flame heating or steam heating, have many drawbacks. Open flame heating poses safety hazards and can easily cause fires and explosions. Steam heating requires large steam generating equipment and complex piping systems, resulting in large footprints, high energy consumption, and high maintenance costs. In addition, existing wellhead heaters are inconvenient to install and transport. Due to their unreasonable structural design, they are difficult to assemble and disassemble quickly, requiring significant time and manpower costs when transferring them between different oil wells. Furthermore, some heaters heat crude oil unevenly, leading to localized excessively high or low temperatures, which not only affects the improvement of crude oil fluidity but may also have a certain impact on crude oil quality.

[0004] Therefore, given the safety hazards and inconveniences in installation and transportation associated with existing vehicle-mounted controller wellhead heating methods, a skid-mounted wellhead electromagnetic heater can be designed. By integrating the various structures into a single unit through a skid-mounted integrated design, the heater's installation and transportation convenience can be improved. At the same time, it can ensure uniform heating, increase the safety of crude oil heating treatment, and thus effectively enhance the heater's practical value. Utility Model Content

[0005] To overcome the problems of most wellhead heating methods, such as easy fire and explosion accidents, large footprint, high energy consumption, inconvenience in installation and transportation, and the need for a lot of time and manpower costs when transferring them, this utility model is proposed.

[0006] The technical solution of this utility model is as follows: a skid-mounted wellhead electromagnetic heater, including a skid-mounted base, a circulating pump, a support assembly, an electromagnetic coil, a PLC controller, and a control assembly. The circulating pump is installed above the skid-mounted base, and two sets of support assemblies are symmetrically arranged at the bottom of the circulating pump. The electromagnetic coil is integrated and wound on the outer wall of the circulating pump. The PLC controller and the matching control assembly are installed above the skid-mounted base. The control assembly monitors the temperature and pressure parameters of the crude oil in the circulating pump in real time. The PLC controller adjusts the alternating magnetic field strength of the electromagnetic coil according to the collected parameters to achieve precise heating control of the crude oil.

[0007] Preferably, the circulating pump and PLC controller are fixed by setting a skid-mounted base, and the circulating pump is fixed by a support component. Crude oil enters the circulating pump, and the pressure and temperature of the crude oil in the circulating pump are monitored in real time by the control component. Based on the collected data, the PLC controller controls the electromagnetic coil to generate an alternating magnetic field of corresponding intensity to heat the crude oil in the circulating pump. This ensures uniform heating, increases the safety of crude oil heating treatment, improves the convenience of heater installation and transportation, and enhances the practical value of the heater.

[0008] As a preferred option, the skid-mounted base adopts a frame structure, which is welded from channel steel and steel plate, and the electromagnetic coil is electrically connected to the PLC controller.

[0009] Preferably, the support assembly includes legs, with multiple sets of legs symmetrically arranged at the bottom outer side of the circulation pump, the legs being arranged in pairs, and a set of legs being arranged at the front and rear ends of the circulation pump respectively.

[0010] Preferably, the support assembly also includes a first mounting plate, which is provided at the bottom of the leg and is fixed to the skid base by welding or bolts or other fasteners.

[0011] Preferably, the outer wall of the circulating pump is wrapped with a heat insulation layer, and the electromagnetic coil is set inside the heat insulation layer. The heat insulation layer is made of high temperature resistant and heat insulation material, including but not limited to ceramic fiber cotton, phase change material, etc. An inlet pipe is set at the bottom of one side of the circulating pump, and an outlet pipe is set at the top of the other side of the circulating pump. An electromagnetic valve is set on the outside of the outlet pipe, and the electromagnetic valve is electrically connected to the PLC controller.

[0012] Preferably, the control assembly includes a second mounting plate and a display screen. The second mounting plate is located at the bottom of the PLC controller and is fixed to the skid base by welding or bolts or other fasteners. The display screen is located at the front of the PLC controller.

[0013] Preferably, the control component also includes a pressure sensor and a temperature sensor. The two ends of the circulating pump are respectively equipped with a pressure sensor and a temperature sensor. The pressure sensor is located on one side of the inlet pipe, and the temperature sensor is located on one side of the outlet pipe. The pressure sensor and the temperature sensor are electrically connected to the PLC controller.

[0014] The beneficial effects of this utility model are: During heating, a skid-mounted base is used to fix the circulating pump and PLC controller. Crude oil enters the circulating pump, and the pressure and temperature of the crude oil in the circulating pump are monitored in real time. Based on the collected data, the PLC controller controls the electromagnetic coil to generate an alternating magnetic field of appropriate intensity to heat the crude oil in the circulating pump. After the crude oil reaches the set temperature, it is discharged from the circulating pump. This method solves the problems of most wellhead heating methods, which are prone to fire and explosion accidents, occupy a large area, consume a lot of energy, and are inconvenient to install and transport. They also require a lot of time and manpower to transfer for use. This method enhances the practical value of the heater. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of a skid-mounted wellhead electromagnetic heater according to this utility model. Figure 2 The diagram shown is a three-dimensional structural schematic of the circulating pump of a skid-mounted wellhead electromagnetic heater according to this utility model. Figure 3 The diagram shown is a three-dimensional cross-sectional view of the insulation layer of a skid-mounted wellhead electromagnetic heater according to this utility model. Figure 4 The diagram shown is a three-dimensional structural schematic of a PLC controller for a skid-mounted wellhead electromagnetic heater according to this utility model. Explanation of reference numerals in the attached drawings: 1. Skid-mounted base; 2. Circulating pump; 201. Inlet pipe; 202. Outlet pipe; 203. Support leg; 204. First mounting plate; 205. Solenoid valve; 3. Solenoid coil; 4. Insulation layer; 5. PLC controller; 501. Second mounting plate; 502. Display screen; 503. Pressure sensor; 504. Temperature sensor. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please see Figure 1 and Figure 3 This utility model provides an embodiment: a skid-mounted wellhead electromagnetic heater, including a skid-mounted base 1, a circulating pump 2, a support assembly, an electromagnetic coil 3, a PLC controller 5, and a control assembly. The skid-mounted base 1 adopts a frame structure, welded from channel steel and steel plates. The circulating pump 2 is installed on the top of the skid-mounted base 1, and two sets of support assemblies are symmetrically arranged at the bottom of the circulating pump 2. The electromagnetic coil 3 is integrated and wound on the outer wall of the circulating pump 2. The PLC controller 5 and the matching control assembly are installed on the top of the skid-mounted base 1. The control assembly monitors the temperature and pressure parameters of the crude oil in the circulating pump 2 in real time. The electromagnetic coil 3 is electrically connected to the PLC controller 5. The PLC controller 5 adjusts the alternating magnetic field strength of the electromagnetic coil 3 according to the collected parameters to achieve precise heating control of the crude oil.

[0018] Please see Figure 2 In this embodiment, the support assembly includes legs 203 and a first mounting plate 204. Multiple sets of legs 203 are symmetrically arranged at the bottom outer side of the circulation pump 2, with each set consisting of two legs. A set of legs 203 is also arranged at the front and rear ends of the circulation pump 2. The bottom end of each leg 203 is fitted with a first mounting plate 204. The first mounting plate 204 is fixed to the skid-mounted base 1 by welding or bolts. The circulation pump 2 is fixed to the skid-mounted base 1 by the first mounting plate 204. The legs 203 support and fix the circulation pump 2, thus integrating the circulation pump 2 onto the skid-mounted base 1, facilitating the overall disassembly, assembly, and transportation of the heater. The outer wall of the circulation pump 2 is wrapped with a heat insulation layer 4, and the electromagnetic coil 3 is disposed within the heat insulation layer. Inside the insulation layer 4, the heat insulation layer 4 is made of high-temperature resistant and heat-insulating materials, including but not limited to ceramic fiber cotton, phase change materials, etc. An inlet pipe 201 is provided at the bottom of one side of the circulating pump 2, and an outlet pipe 202 is provided at the top of the other side of the circulating pump 2. A solenoid valve 205 is provided on the outside of the outlet pipe 202. The solenoid valve 205 is electrically connected to the PLC controller 5. Crude oil is injected into the circulating pump 2 through the inlet pipe 201. The opening and closing of the outlet pipe 202 is controlled by the solenoid valve 205. After the crude oil reaches the set temperature, the solenoid valve 205 is opened by the PLC controller 5, so that the crude oil is discharged from the circulating pump 2 through the outlet pipe 202. At the same time, the heat insulation layer 4 is used to reduce the heat loss of the circulating pump 2 and improve the heating efficiency.

[0019] Please see Figure 1 and Figure 4 In this embodiment, the control component includes a second mounting plate 501, a display screen 502, a pressure sensor 503, and a temperature sensor 504. The second mounting plate 501 is located at the bottom of the PLC controller 5 and is fixed to the skid-mounted base 1 by welding or bolts or other fasteners. The display screen 502 is located at the front of the PLC controller 5. The pressure sensor 503 and the temperature sensor 504 are respectively located at both ends of the circulating pump 2. The pressure sensor 503 is located on one side of the inlet pipe 201, and the temperature sensor 504 is located on one side of the outlet pipe 202. The pressure sensor 503 and the temperature sensor 504 are electrically connected to the PLC controller 5. The PLC controller 5 is skid-mounted and fixed to the skid base 1 via the second mounting plate 501. The pressure sensor 503 monitors the crude oil pressure injected into the circulation pump 2 in real time, and the temperature sensor 504 monitors the crude oil temperature at the outlet pipe 202 in real time. The pressure sensor 503 and the temperature sensor 504 send the monitored data to the PLC controller 5 in real time. After the captured data is processed by the PLC controller 5, the corresponding data and device operation status are displayed in real time on the display screen 502. The PLC controller 5 controls the electromagnetic coil 3 to generate an alternating magnetic field of corresponding intensity according to the received oil pressure and oil temperature to heat the crude oil in the circulation pump 2.

[0020] Before heating, the circulation pump 2 is skid-mounted and fixed on the skid-mounted base 1 by the first mounting plate 204, and the circulation pump 2 is supported and fixed by the support leg 203. Then, the PLC controller 5 is skid-mounted and fixed on the skid-mounted base 1 by the second mounting plate 501, and the entire skid-mounted base 1 is transported to the designated use location. During heating, the crude oil output port is connected via the flange of the inlet pipe 201, and the crude oil is injected into the circulation pump 2 through the inlet pipe 201. At the same time, the pressure of the crude oil injected into the circulation pump 2 is monitored in real time by the pressure sensor 503, and the temperature of the crude oil at the outlet pipe 202 is monitored in real time by the temperature sensor 504. The pressure sensor 503 and the temperature sensor 504 send the monitored data to the PLC controller 5 in real time. After the captured data is processed by the PLC controller 5, the corresponding data and the device operation status are displayed in real time on the display screen 502. The PLC controller 5 controls the electromagnetic coil 3 to generate an alternating magnetic field of corresponding intensity according to the collected data to heat the crude oil in the circulation pump 2. At the same time, the heat insulation layer 4 is used to reduce the heat loss of the circulation pump 2 and improve the heating efficiency. Finally, when the temperature sensor 504 detects that the crude oil has reached the set temperature, the PLC controller 5 controls the solenoid valve 205 to open the outlet pipe 202, and the heated crude oil is discharged from the circulation pump 2 through the outlet pipe 202.

[0021] Through the above steps, the circulating pump 2 and PLC controller 5 are fixed by setting up a skid-mounted base 1. The circulating pump 2 is supported and fixed by the support components. Crude oil enters the circulating pump 2. The pressure and temperature of the crude oil in the circulating pump 2 are monitored in real time by the control components. Based on the collected data, the PLC controller 5 controls the electromagnetic coil 3 to generate an alternating magnetic field of corresponding intensity to heat the crude oil in the circulating pump 2, thereby ensuring uniform heating, increasing the safety of crude oil heating treatment, and improving the convenience of heater installation and transportation.

[0022] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A skid-mounted wellhead electromagnetic heater comprising a skid base (1), characterised in that: It also includes a circulating pump (2), a support assembly, an electromagnetic coil (3), a PLC controller (5), and a control assembly. The circulating pump (2) is installed above the skid-mounted base (1). Two sets of support assemblies are symmetrically arranged at the bottom of the circulating pump (2). The electromagnetic coil (3) is integrated and wound on the outer wall of the circulating pump (2). The PLC controller (5) and its matching control assembly are installed above the skid-mounted base (1). The control assembly monitors the temperature and pressure parameters of the crude oil in the circulating pump (2) in real time. The PLC controller (5) adjusts the alternating magnetic field strength of the electromagnetic coil (3) according to the collected parameters to achieve precise heating control of the crude oil.

2. A skid-mounted wellhead electromagnetic heater as defined in claim 1, characterized by: The skid-mounted base (1) adopts a frame structure, which is welded from channel steel and steel plate. The electromagnetic coil (3) is electrically connected to the PLC controller (5).

3. A skid-mounted wellhead electromagnetic heater as defined in claim 1, wherein: The support assembly includes legs (203). Multiple sets of legs (203) are symmetrically arranged at the bottom outer side of the circulation pump (2). The legs (203) are arranged in pairs. A set of legs (203) is arranged at the front and rear ends of the circulation pump (2).

4. A skid-mounted wellhead electromagnetic heater as defined in claim 3, characterized by: The support assembly also includes a first mounting plate (204), and the bottom end of the support leg (203) is provided with the first mounting plate (204). The first mounting plate (204) is fixed to the skid base (1) by welding or fasteners such as bolts.

5. A skid-mounted wellhead electromagnetic heater as defined in claim 1, wherein: The outer wall of the circulating pump (2) is covered with a heat insulation layer (4). The electromagnetic coil (3) is located inside the heat insulation layer (4). The heat insulation layer (4) is made of a material with high temperature resistance and good heat insulation performance, including but not limited to ceramic fiber cotton, phase change material, etc. The bottom of one side of the circulating pump (2) is provided with an inlet pipe (201), and the top of the other side of the circulating pump (2) is provided with an outlet pipe (202). The outside of the outlet pipe (202) is provided with a solenoid valve (205). The solenoid valve (205) is electrically connected to the PLC controller (5).

6. A skid-mounted wellhead electromagnetic heater according to claim 5, characterized in that: The control components include a second mounting plate (501) and a display screen (502). The second mounting plate (501) is provided at the bottom of the PLC controller (5). The second mounting plate (501) is fixed to the skid base (1) by welding or fasteners such as bolts. The display screen (502) is provided at the front end of the PLC controller (5).

7. A skid-mounted wellhead electromagnetic heater as defined in claim 6, characterized by: The control components also include a pressure sensor (503) and a temperature sensor (504). The two ends of the circulating pump (2) are respectively equipped with a pressure sensor (503) and a temperature sensor (504). The pressure sensor (503) is located on one side of the inlet pipe (201), and the temperature sensor (504) is located on one side of the outlet pipe (202). The pressure sensor (503) and the temperature sensor (504) are electrically connected to the PLC controller (5).

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