Oil-gas multiphase mixed transportation device for oil field

Abstract

The utility model belongs to the technical field of oil-gas mixed transportation, and discloses an oil-gas multiphase mixed transportation device for an oil field, which comprises an anti-scale and anti-wax device, a first filter compensator, a first mixed transportation pump and an electromagnetic heater, one end of the anti-scale and anti-wax device is connected with an oil-gas inlet, and the other end of the anti-scale and anti-wax device is sequentially connected with the first filter compensator, the first mixed transportation pump and the electromagnetic heater. The other end of the electromagnetic heater is connected with an oil-gas outlet, a drain outlet of the first filter compensator and a drain outlet of the first multiphase pump are both connected with a sewage main pipe, and a multiphase branch used for standby oil-gas multiphase transportation is arranged between the scale and wax prevention device and the electromagnetic heater. The device is integrated and combined with a bottom plate, a pipeline, a motor, a control cabinet and the like to form a pry, meanwhile, a sensor, an electric valve, an alarm, an instrument panel and an intelligent control system are arranged, the functions of filtering, heating, metering, buffering, mixed transportation pressurization and the like are integrated, and real-time state monitoring, intelligent pipeline regulation and control, remote terminal control and unattended operation on site are achieved.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas transportation technology, specifically to an oilfield multiphase mixed transportation device for oil and gas. Background Technology

[0002] Most domestic oil and gas gathering and transportation systems use gas-liquid separation transportation, that is, oil and water and associated gas are transported by two pipelines. In winter, associated gas pipelines are prone to freezing and blockage. The system has many equipment and facilities, occupies a large area, has high maintenance costs, and poses many safety risks.

[0003] Oil and gas co-transport involves mixing and pressurizing crude oil products before simultaneously transporting crude oil and natural gas through a single pipeline. Compared to traditional gas-liquid separation and transportation processes, oil and gas co-transport can reduce investment in oil and gas separation equipment and some transportation pipelines, resulting in significant economic benefits. It represents a new generation of oil and gas transportation technology.

[0004] In recent years, various oil and gas mixing technologies have been applied, including single-screw mixing pumps, synchronous rotary oil and gas mixing pumps, eccentric rotary swing oil and gas mixing pumps, small oil and gas mixing devices, plunger-type oil and gas mixing pumps, and integrated mixing skids. While these technologies have achieved some success, they generally suffer from problems such as small gas carrying capacity, poor stability, low automation, high pump failure rate, high maintenance costs, poor adaptability, and difficulty in promotion, thus failing to meet the needs of field applications.

[0005] Therefore, exploring new technologies for ambient temperature co-transport of oil and gas, reducing separation, buffering, and heating equipment, simplifying gathering and transportation processes, improving oil and gas co-transport capacity, and enhancing system stability and automation have become urgent problems to be solved in the field of oil and gas co-transport. Utility Model Content

[0006] The purpose of this invention is to provide an oilfield multiphase mixed transportation device for oil and gas, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An oilfield multiphase oil and gas mixing and transportation device includes a scale and wax inhibitor, a first filter compensator, a first mixing and transportation pump, and an electromagnetic heater.

[0009] One end of the scale and wax inhibitor is connected to the oil and gas inlet, and the other end of the scale and wax inhibitor is sequentially connected to the first filter compensator, the first mixing pump and the electromagnetic heater. The other end of the electromagnetic heater is connected to the oil and gas outlet.

[0010] The drain outlet of the first filter compensator and the drain outlet of the first mixed-transfer pump are both connected to the main sewage pipe;

[0011] A mixed-transmission branch for backup oil and gas mixed transmission is provided between the anti-scaling and anti-wax device and the electromagnetic heater.

[0012] More preferably, the mixed-transport branch includes a second filter compensator and a second mixed-transport pump;

[0013] The anti-scaling and anti-wax device is connected in sequence to the second filter compensator and the second mixing pump at one end near the first filter compensator, and the other end of the second mixing pump is connected to the electromagnetic heater.

[0014] The drain outlet of the second filter compensator and the drain outlet of the second mixing pump are both connected to the main sewage pipe.

[0015] More preferably, the oilfield multiphase mixed transport system for oil and gas also includes three emergency branch lines;

[0016] The first emergency branch is a connection between the anti-scaling and anti-wax device and the emergency tank at the end near the first filter compensator.

[0017] The second emergency branch is to connect the first mixing pump to the emergency tank at the end near the electromagnetic heater.

[0018] The third emergency branch is the connection of the second mixing pump to the emergency tank at the end near the electromagnetic heater.

[0019] More preferably, the oilfield multiphase mixed transport system for oil and gas also includes an inlet branch;

[0020] The inlet branch is located between the second filter compensator and the emergency tank inlet, allowing the oil and gas in the emergency tank to enter the mixing and transport device for transport.

[0021] More preferably, the oilfield multiphase mixed transport system further includes a first bypass;

[0022] The first bypass is located between the oil and gas inlet and the first filter compensator, so that the oil and gas do not pass through the anti-scaling and anti-wax device.

[0023] More preferably, the oilfield multiphase mixed transport system further includes a second bypass;

[0024] The second bypass is located between the anti-scaling and anti-wax device and the electromagnetic heater, so that the oil and gas do not pass through the first filter compensator and the first mixing pump.

[0025] More preferably, the oilfield multiphase mixed transport system for oil and gas also includes a third bypass;

[0026] The third bypass is located between the first mixing pump and the oil and gas outlet, so that the oil and gas do not pass through the electromagnetic heater.

[0027] More preferably, the oilfield multiphase gas mixed transportation system further includes an automatic control unit for controlling the multiphase gas mixed transportation process.

[0028] More preferably, the automatic control unit includes a control cabinet, an oil and gas mixed transmission meter, a first temperature transmitter, a second temperature transmitter, a third temperature transmitter, a fourth temperature transmitter, a fifth temperature transmitter, a sixth temperature transmitter, a seventh temperature transmitter, a first pressure transmitter, a second pressure transmitter, a third pressure transmitter, and a fourth pressure transmitter.

[0029] The first temperature transmitter is positioned between the anti-scaling and anti-wax device and the oil / gas inlet;

[0030] The first pressure transmitter is disposed between the first filter compensator and the first mixing pump;

[0031] The second temperature transmitter is disposed between the first pressure transmitter and the first mixing pump;

[0032] The second pressure transmitter is disposed between the first mixing pump and the electromagnetic heater;

[0033] The third temperature transmitter is disposed between the second pressure transmitter and the electromagnetic heater;

[0034] The third pressure transmitter is disposed between the second filter compensator and the second mixing pump;

[0035] The sixth temperature transmitter is disposed between the third pressure transmitter and the second mixing pump;

[0036] The fourth pressure transmitter is disposed between the second mixing pump and the electromagnetic heater;

[0037] The seventh temperature transmitter is disposed between the fourth pressure transmitter and the electromagnetic heater;

[0038] The electromagnetic heater is equipped with a fourth temperature transmitter.

[0039] The fifth temperature transmitter is located between the electromagnetic heater and the oil and gas outlet;

[0040] The oil and gas mixed transport meter is located between the fifth temperature transmitter and the oil and gas outlet;

[0041] The control cabinet is electrically connected to the oil and gas mixed transmission meter, each temperature transmitter, and each pressure transmitter.

[0042] Compared with the prior art, the beneficial effects of this utility model are:

[0043] This invention provides an oilfield multiphase oil and gas mixing and transportation device, integrated into a skid with a base plate, pipelines, motors, and control cabinet. The device also includes backup mixing and transportation branches, emergency branches, and various bypasses, allowing for flexible and reasonable adjustments to the oil and gas transportation scheme based on the crude oil quality and the device's status. Furthermore, the device is equipped with temperature sensors, pressure sensors, gas sensors, electric valves, alarms, and instrument panels at various nodes. All components are electrically connected to the control cabinet, enabling unattended remote intelligent control of the oil and gas mixing and transportation process through an intelligent control system.

[0044] This utility model device solves technical problems such as oil and gas mixed transportation, complete recovery of associated gas, ambient temperature oil and gas mixed transportation, physical descaling and dewaxing, and accurate metering of gas-liquid mixed transportation. It realizes automatic switching of the mixed transportation process in an unattended state, automatic monitoring of the mixed transportation process, and automatic control of the device under overpressure relief / return, mixed transportation liquid replenishment, emergency tank transportation, gas over-limit alarm, and fault detection. It has considerable economic benefits and broad application prospects in the field of multiphase oil and gas mixed transportation. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0046] In the diagram: 1. Oil / gas inlet; 2. Anti-scaling and anti-wax device; 3. First filter compensator; 4. Second filter compensator; 5. First mixed-transfer pump; 6. Second mixed-transfer pump; 7. Electromagnetic heater; 8. Oil / gas mixed-transfer meter; 9. Oil / gas outlet; 10. Emergency tank; 11. Sewage main pipe; 12. Emergency tank inlet; 13. First temperature transmitter; 14. Second temperature transmitter; 15. Third temperature transmitter; 16. Fourth temperature transmitter; 17. Fifth temperature transmitter; 18. Sixth temperature transmitter; 19. Seventh temperature transmitter; 20. First pressure transmitter; 21. Second pressure transmitter; 22. Third pressure transmitter; 23. Fourth pressure transmitter; 24. First angle safety valve; 25. Second angle safety valve; 26. First flap-type check valve; 27. Second flap-type check valve; 28. Third flap-type check valve.

[0047] 30. First flange electric valve; 31. Second flange electric valve; 32. Third flange electric valve; 33. Fourth flange electric valve; 34. Fifth flange electric valve; 35. Sixth flange electric valve; 36. Seventh flange electric valve; 37. Eighth flange electric valve; 38. Ninth flange electric valve; 39. Tenth flange electric valve; 40. Eleventh flange electric valve; 41. Twelfth flange electric valve; 42. Thirteenth flange electric valve; 43. Fourteenth flange electric valve;

[0048] 50. First flange ball valve; 51. Second flange ball valve; 52. Third flange ball valve; 53. Fourth flange ball valve; 54. Fifth flange ball valve; 55. Sixth flange ball valve; 56. Seventh flange ball valve; 57. Eighth flange ball valve. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] Example 1: As shown in the attached document Figure 1 As shown, this embodiment provides an oilfield multiphase mixed transport device for oil and gas, including a scale and wax inhibitor 2, a first filter compensator 3, a first mixed transport pump 5, and an electromagnetic heater 7; one end of the scale and wax inhibitor 2 is connected to the oil and gas inlet 1, and the other end of the scale and wax inhibitor 2 is sequentially connected to the first filter compensator 3, the first mixed transport pump 5, and the electromagnetic heater 7, and the other end of the electromagnetic heater 7 is connected to the oil and gas outlet 9; the drain outlets of the first filter compensator 3 and the first mixed transport pump 5 are both connected to the main sewage pipe 11; a mixed transport branch for backup oil and gas mixed transport is provided between the scale and wax inhibitor 2 and the electromagnetic heater 7.

[0051] The scale and wax inhibitor 2, the first filter compensator 3, the first mixing pump 5, and the electromagnetic heater 7 are integrated with the base plate, oil pipeline, motor, and control cabinet to form a skid.

[0052] The oilfield multiphase mixed transportation system is also equipped with temperature sensors, pressure sensors, gas sensors, electric valves, alarms, and instrument panels. All components are electrically connected to the control cabinet, and the oil and gas mixed transportation process can be remotely and intelligently controlled without human intervention through the intelligent control system.

[0053] In this embodiment, the device located in the attached area is opened via intelligent control. Figure 1 The first flange electric valve 30, the second flange electric valve 31, the fourth flange electric valve 33, the second flap-type check valve 27, the fifth flange electric valve 34, the thirteenth flange electric valve 42, and the fourteenth flange electric valve 43 at the indicated positions are closed simultaneously. All other valves are closed at the same time, so that oil and gas enter the device from the oil and gas inlet 1, and then pass through the anti-scaling and anti-wax device 2, the first filter compensator 3, the first mixing pump 5, the electromagnetic heater 7 in sequence, and finally exit from the oil and gas outlet 9.

[0054] Opening the fifth flange ball valve 54, located between the first filter compensator 3 and the sewage main pipe 11, allows the impurities deposited in the first filter compensator 3 to be discharged; opening the sixth flange ball valve 55, located between the first mixing pump 5 and the sewage main pipe 11, allows the impurities deposited in the first mixing pump 5 to be discharged.

[0055] Example 2: As shown in the attached document Figure 1 As shown, based on Embodiment 1, this embodiment provides an oilfield multiphase oil and gas mixing and transportation device. The mixing and transportation branch includes a second filter compensator 4 and a second mixing and transportation pump 6. The scale and wax inhibitor 2 is connected to the second filter compensator 4 and the second mixing and transportation pump 6 in sequence at one end near the first filter compensator 3. The other end of the second mixing and transportation pump 6 is connected to an electromagnetic heater 7. The drain outlet of the second filter compensator 4 and the drain outlet of the second mixing and transportation pump 6 are both connected to the sewage main pipe 11.

[0056] The first filter compensator 3 and the first mixed-transfer pump 5 constitute the main mixed-transfer branch, and the intelligent control system performs fault detection and automatic switching between the main and backup mixed-transfer branches.

[0057] When switching to the backup mixed transmission branch, it is necessary to open the setting in the attached... Figure 1 The first flange electric valve 30, the second flange electric valve 31, the second flange ball valve 51, the third flap-type check valve 28, the seventh flange electric valve 36, the thirteenth flange electric valve 42, and the fourteenth flange electric valve 43, located at the indicated positions, are all closed simultaneously. This allows oil and gas to enter the device from the oil and gas inlet 1, and then pass sequentially through the anti-scaling and anti-wax device 2, the second filter compensator 4, the second mixing pump 6, and the electromagnetic heater 7, finally exiting from the oil and gas outlet 9.

[0058] Opening the third flange ball valve 52, which is located between the second filter compensator 4 and the sewage main pipe 11, allows the impurities deposited in the second filter compensator 4 to be discharged; opening the fourth flange ball valve 53, which is located between the second mixing pump 6 and the sewage main pipe 11, allows the impurities deposited in the second mixing pump 6 to be discharged.

[0059] Example 3: As shown in the attached document Figure 1 As shown, based on Embodiment 2, this embodiment provides an oilfield multiphase mixed transport device for oil and gas. The oilfield multiphase mixed transport system for oil and gas also includes three emergency transport branches; the first emergency branch is an anti-scaling and anti-wax device 2 connected to an emergency tank 10 at one end near the first filter compensator 3; the second emergency branch is a first mixed transport pump 5 connected to an emergency tank 10 at one end near the electromagnetic heater 7; and the third emergency branch is a second mixed transport pump 6 connected to an emergency tank 10 at one end near the electromagnetic heater 7.

[0060] When activating the first emergency branch, it is necessary to open the switch located at the attached... Figure 1The seventh flange ball valve 56 or the eighth flange electric valve 37, the ninth flange electric valve 38 and the first angle safety valve 24 at the indicated positions are closed at the same time, so that oil and gas enter the device from the oil and gas inlet 1, and then enter the emergency tank 10 after passing through the anti-scaling and anti-wax device 2.

[0061] When activating the second emergency branch, it is necessary to open the switch located at the attached... Figure 1 The first flange electric valve 30, the second flange electric valve 31, the fourth flange electric valve 33, the second flap-type check valve 27, the fifth flange electric valve 34, the eleventh flange electric valve 40, the second angle safety valve 25, and the tenth flange electric valve 39, located as shown, are all closed simultaneously. This allows oil and gas to enter the device from the oil and gas inlet 1, and then pass through the anti-scaling and anti-wax device 2, the first filter compensator 3, and the first mixing pump 5 in sequence, finally being delivered into the emergency tank 10.

[0062] When activating the third emergency branch, it is necessary to open the switch located at the attached... Figure 1 The first flange electric valve 30, the second flange electric valve 31, the second flange ball valve 51, the third flap-type check valve 28, the seventh flange electric valve 36, the eleventh flange electric valve 40, the second angle safety valve 25, and the tenth flange electric valve 39, located as shown, are all closed simultaneously. This allows oil and gas to enter the device from the oil and gas inlet 1, and then pass through the anti-scaling and anti-wax device 2, the second filter compensator 4, and the second mixing pump 6 in sequence, finally being delivered into the emergency tank 10.

[0063] The oilfield multiphase mixed transport system also includes an inlet branch; the inlet branch is located between the second filter compensator 4 and the emergency tank inlet 12, so that the oil and gas in the emergency tank 10 enter the mixed transport device and are transported.

[0064] When activating the import branch, it is necessary to open the setting in the attached... Figure 1 The first flange ball valve 50, the third flap-type check valve 28, the seventh flange electric valve 36, the thirteenth flange electric valve 42, and the fourteenth flange electric valve 43 at the indicated positions are closed, while all other valves are closed, so that oil and gas enter the device from the emergency tank inlet 12, pass through the second filter compensator 4, the second mixing pump 6, the electromagnetic heater 7 in sequence, and finally exit from the oil and gas outlet 9.

[0065] Example 4: As shown in the appendix Figure 1 As shown, based on Example 3, this example provides an oil and gas multiphase mixed transportation device for oil fields, which also includes a first bypass; the first bypass is set between the oil and gas inlet 1 and the first filter compensator 3, so that the oil and gas do not pass through the anti-scaling and anti-wax device 2.

[0066] When activating the first bypass, it is necessary to enable the setting in the auxiliary... Figure 1The third flange electric valve 32 at the indicated position closes the first flange electric valve 30 and the second flange electric valve 31, allowing oil and gas to be transported from the first bypass without passing through the anti-scaling and anti-wax device 2.

[0067] The oilfield multiphase mixed transport system also includes a second bypass; the second bypass is located between the anti-scaling and anti-wax device 2 and the electromagnetic heater 7, so that the oil and gas do not pass through the first filter compensator 3 and the first mixed transport pump 5.

[0068] When activating the second bypass, it is necessary to enable the setting in the attached... Figure 1 The eighth flange ball valve 57 at the indicated position closes the fourth flange electric valve 33, the second flange ball valve 51, the sixth flange electric valve 35, the first flap-type check valve 26, the fifth flange electric valve 34, and the seventh flange electric valve 36, allowing oil and gas to be transported from the second bypass without passing through the filter compensator and the mixing pump.

[0069] The oilfield multiphase mixed transport system also includes a third bypass; the third bypass is located between the first mixed transport pump 5 and the oil and gas outlet 9, so that the oil and gas do not pass through the electromagnetic heater 7.

[0070] When activating the third bypass, it is necessary to open the setting in the attached... Figure 1 The twelfth flange electric valve 41 at the indicated position closes the thirteenth flange electric valve 42 and the fourteenth flange electric valve 43, allowing oil and gas to be transported through the third bypass without passing through the electromagnetic heater 7.

[0071] Example 5: As shown in the attached document Figure 1 As shown in Example 4, this example provides an oil and gas multiphase mixed transportation device for oil fields, and also includes an automatic control unit for controlling the oil and gas multiphase mixed transportation process.

[0072] The automatic control unit includes a control cabinet, an oil-gas mixed-transmission metering device 8, a first temperature transmitter 13, a second temperature transmitter 14, a third temperature transmitter 15, a fourth temperature transmitter 16, a fifth temperature transmitter 17, a sixth temperature transmitter 18, a seventh temperature transmitter 19, a first pressure transmitter 20, a second pressure transmitter 21, a third pressure transmitter 22, and a fourth pressure transmitter 23; the first temperature transmitter 13 is located between the anti-scaling and anti-wax device 2 and the oil-gas inlet 1; the first pressure transmitter 20 is located between the first filter compensator 3 and the first mixed-transmission pump 5; the second temperature transmitter 14 is located between the first pressure transmitter 20 and the first mixed-transmission pump 5; the second pressure transmitter 21 is located between the first mixed-transmission pump 5 and the electromagnetic heater 7; the third temperature transmitter... 15 is located between the second pressure transmitter 21 and the electromagnetic heater 7; the third pressure transmitter 22 is located between the second filter compensator 4 and the second mixed-transfer pump 6; the sixth temperature transmitter 18 is located between the third pressure transmitter 22 and the second mixed-transfer pump 6; the fourth pressure transmitter 23 is located between the second mixed-transfer pump 6 and the electromagnetic heater 7; the seventh temperature transmitter 19 is located between the fourth pressure transmitter 23 and the electromagnetic heater 7; the fourth temperature transmitter 16 is installed on the electromagnetic heater 7; the fifth temperature transmitter 17 is located between the electromagnetic heater 7 and the oil and gas outlet 9; the oil and gas mixed-transfer metering device 8 is located between the fifth temperature transmitter 17 and the oil and gas outlet 9; the control cabinet is electrically connected to the oil and gas mixed-transfer metering device 8, each temperature transmitter, and each pressure transmitter.

[0073] The automatic control unit has a built-in automatic control system. The automatic control unit collects data from each node in real time through various sensors. Based on the collected data, it generates control commands after logical processing. The control commands are sent to the corresponding electric valves through electrical signals. The oil and gas transportation process is remotely controlled in real time by opening and closing the corresponding electric valves.

[0074] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0075] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An oilfield multiphase oil and gas mixing and transportation device, characterized in that, Includes a scale and wax inhibitor (2), a first filter compensator (3), a first mixing pump (5), and an electromagnetic heater (7); One end of the anti-scaling and anti-wax device (2) is connected to the oil and gas inlet (1), and the other end of the anti-scaling and anti-wax device (2) is connected in sequence to the first filter compensator (3), the first mixing pump (5) and the electromagnetic heater (7), and the other end of the electromagnetic heater (7) is connected to the oil and gas outlet (9). The drain outlet of the first filter compensator (3) and the drain outlet of the first mixed pump (5) are both connected to the main sewage pipe (11); A mixed-transmission branch for backup oil and gas mixed transmission is provided between the anti-scaling and anti-wax device (2) and the electromagnetic heater (7).

2. The oilfield multiphase oil and gas mixing and transportation device according to claim 1, characterized in that, The mixed transport branch includes a second filter compensator (4) and a second mixed transport pump (6); The anti-scaling and anti-wax device (2) is connected in sequence to the second filter compensator (4) and the second mixing pump (6) at one end near the first filter compensator (3), and the other end of the second mixing pump (6) is connected to the electromagnetic heater (7). The drain outlet of the second filter compensator (4) and the drain outlet of the second mixing pump (6) are both connected to the main sewage pipe (11).

3. The oilfield multiphase oil and gas mixing and transportation device according to claim 2, characterized in that, It also includes three emergency branch roads; The first emergency branch is the connection of the anti-scaling and anti-wax device (2) to the emergency tank (10) at the end near the first filter compensator (3); The second emergency branch is the emergency tank (10) connected to the end of the first mixing pump (5) near the electromagnetic heater (7). The third emergency branch is the second mixing pump (6) connected to the emergency tank (10) at the end near the electromagnetic heater (7).

4. The oilfield multiphase oil and gas mixing and transportation device according to claim 3, characterized in that, This also includes import branch roads; The inlet branch is located between the second filter compensator (4) and the emergency tank inlet (12), so that the oil and gas in the emergency tank (10) enter the mixing and transportation device and are transported.

5. The oilfield multiphase oil and gas mixing and transportation device according to claim 1, characterized in that, It also includes the first bypass; The first bypass is located between the oil and gas inlet (1) and the first filter compensator (3), so that the oil and gas do not pass through the anti-scaling and anti-wax device (2).

6. The oilfield multiphase oil and gas mixing and transportation device according to claim 1, characterized in that, It also includes a second bypass; The second bypass is located between the anti-scaling and anti-wax device (2) and the electromagnetic heater (7), so that the oil and gas do not pass through the first filter compensator (3) and the first mixing pump (5).

7. The oilfield multiphase oil and gas mixing and transportation device according to claim 1, characterized in that, It also includes a third bypass; The third bypass is located between the first mixing pump (5) and the oil and gas outlet (9), so that the oil and gas do not pass through the electromagnetic heater (7).

8. The oilfield multiphase oil and gas mixing and transportation device according to claim 2, characterized in that, It also includes an automatic control unit for controlling the multiphase mixed transport process of oil and gas.

9. An oilfield multiphase oil and gas mixing and transportation device according to claim 8, characterized in that, The automatic control unit includes a control cabinet, an oil and gas mixed transport meter (8), a first temperature transmitter (13), a second temperature transmitter (14), a third temperature transmitter (15), a fourth temperature transmitter (16), a fifth temperature transmitter (17), a sixth temperature transmitter (18), a seventh temperature transmitter (19), a first pressure transmitter (20), a second pressure transmitter (21), a third pressure transmitter (22), and a fourth pressure transmitter (23). The first temperature transmitter (13) is disposed between the anti-scaling and anti-wax device (2) and the oil and gas inlet (1); The first pressure transmitter (20) is located between the first filter compensator (3) and the first mixing pump (5); The second temperature transmitter (14) is disposed between the first pressure transmitter (20) and the first mixing pump (5); The second pressure transmitter (21) is disposed between the first mixing pump (5) and the electromagnetic heater (7); The third temperature transmitter (15) is disposed between the second pressure transmitter (21) and the electromagnetic heater (7); The third pressure transmitter (22) is disposed between the second filter compensator (4) and the second mixing pump (6); The sixth temperature transmitter (18) is disposed between the third pressure transmitter (22) and the second mixing pump (6); The fourth pressure transmitter (23) is disposed between the second mixing pump (6) and the electromagnetic heater (7); The seventh temperature transmitter (19) is disposed between the fourth pressure transmitter (23) and the electromagnetic heater (7); The electromagnetic heater (7) is equipped with a fourth temperature transmitter (16). The fifth temperature transmitter (17) is located between the electromagnetic heater (7) and the oil and gas outlet (9); The oil and gas mixed transport meter (8) is located between the fifth temperature transmitter (17) and the oil and gas outlet (9); The control cabinet is electrically connected to the oil and gas mixed transmission meter (8), each temperature transmitter and each pressure transmitter.

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