Multi-energy complementary heating system for heating produced liquid in gathering and transportation process of oil field

Abstract

The invention discloses a multi-energy complementary heating system for heating produced liquid in the gathering and transportation process of an oil field, which comprises a solar heat collection system, the solar heat collection system comprises a solar heat collector, a water tank and a heat exchange pipe, and the solar heat collector and the water tank are subjected to circulating heat exchange by using the heat exchange pipe; a hot water input end and a cold water output end of the gas water jacket furnace are respectively connected with a hot water output end and a cold water input end of the water tank, and circulating hot water of the gas water jacket furnace is used for heating produced liquid; and the electric heating module is arranged in the water tank and is used for heating water in the water tank. The invention aims to solve the problems that carbon emission is increased when a gas water jacket furnace or an electric heating furnace is used, and the heating effect of produced liquid is affected due to the fact that the photo-thermal utilization effect in winter in a high-latitude area is unstable.

Description

Technical Field

[0001] The invention belongs to the field of oilfield gathering and transportation, and in particular relates to a multi-energy complementary heating system for heating produced fluid in the oilfield gathering and transportation process. Background Art

[0002] In the process of oilfield gathering and transportation, heating is required to keep the produced fluid in a reasonable temperature range to ensure the fluidity of crude oil. When designing and constructing gathering and transportation projects, the thermal conditions of each process link should be comprehensively considered to reduce the number of repeated heating, conduct heat balance, and reduce fuel consumption.

[0003] At present, most oil fields use gas-fired water-jacketed furnaces or electric heating furnaces for heating crude oil. However, the use of gas-fired water-jacketed furnaces or electric heating furnaces has the problem of high energy consumption / carbon emissions, which is contrary to the development concept of clean substitution and green transformation. If solar thermal technology is used for clean substitution, the effect of solar thermal utilization in winter in high-latitude areas is unstable, which may affect the heating effect of produced fluid.

[0004] Therefore, under the current circumstances, it is imperative to improve the traditional thin oil gathering and heating process. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a multi-energy complementary heating system for heating produced fluids in the oil field gathering and transportation process, which aims to solve the problem that the use of gas-fired water-jacketed furnaces or electric heating furnaces will lead to increased carbon emissions, and the heating effect of produced fluids is affected due to the unstable effect of light and heat utilization in high-latitude areas in winter.

[0006] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0007] A multi-energy complementary heating system for heating produced fluid in an oilfield gathering and transportation process, comprising:

[0008] A solar thermal collection system, the solar thermal collection system comprising a solar thermal collector, a water tank and a heat exchange tube, wherein the solar thermal collector and the water tank are circulated and heat exchanged by using the heat exchange tube;

[0009] A gas-fired water-jacketed furnace, wherein the hot water input end and the cold water output end of the gas-fired water-jacketed furnace are respectively connected to the hot water output end and the cold water input end of the water tank, and the hot water circulated by the gas-fired water-jacketed furnace is used to heat the produced liquid;

[0010] An electric heating module is arranged in the water tank and is used to heat the water in the water tank.

[0011] Furthermore, a stop valve is provided on the pipe section of the heat exchange pipe located before the heat exchange, and a circulation pump is provided on the pipe section of the heat exchange pipe located after the heat exchange.

[0012] Furthermore, a stop valve and a circulation pump are provided between the cold water output end of the gas-fired water jacket boiler and the cold water input end of the water tank.

[0013] Furthermore, a heat exchange medium processing system is disposed on the heat exchange tube section after heat exchange, and the heat exchange medium processing system is used to process the heat exchange medium after heat exchange in the heat exchange tube.

[0014] Furthermore, the heat exchange medium processing system includes a gas-liquid separator and a high-level tank, the gas-liquid separator is connected to the pipe section of the heat exchange tube located after heat exchange, and the gas output end of the gas-liquid separator is connected to the high-level tank.

[0015] Furthermore, the heat exchange medium processing system also includes a low-level tank, the input end of the low-level tank is connected to the liquid output end of the gas-liquid separator, and a stop valve is provided between the input end of the low-level tank and the liquid output end of the gas-liquid separator.

[0016] Furthermore, the output end of the low-level tank is connected to the input end of the high-level tank, and a stop valve and a circulation pump are provided between the output end of the low-level tank and the input end of the high-level tank.

[0017] Furthermore, a temperature transmitter and a pressure transmitter are provided on the pipe section before the heat exchange and the pipe section after the heat exchange of the heat exchange pipe.

[0018] Furthermore, an electromagnetic flowmeter and a temperature transmitter are provided between the hot water input end of the gas-fired water jacket boiler and the hot water output end of the water tank.

[0019] Furthermore, the multi-energy complementary heating system also includes:

[0020] A control module, wherein the control module is connected to the solar thermal collection system, the gas-fired water jacket furnace and the electric heating module, and is used to control the solar thermal collection system, the gas-fired water jacket furnace and the electric heating module.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] The present invention provides a multi-energy complementary heating system for heating produced fluids in the oilfield gathering and transportation process. The system mainly uses a solar collector to convert solar radiation energy into thermal energy. After the heat exchange medium in the heat exchange tube absorbs the thermal energy, the thermal energy is heat-exchanged with the cold water in the water tank to heat the cold water in the water tank. After the cold water in the water tank is heated, it is heat-exchanged with the produced fluid that has passed through the gas-fired water-jacketed furnace to heat the produced fluid. The water after the heat exchange continues to circulate to the water tank and heat-exchange with the heat exchange medium carrying thermal energy in the heat exchange tube. When the solar energy is insufficient and the heat is insufficient, consider using an electric heating module arranged in the water tank to heat the cold water in the water tank, that is, heating by combining photothermal heating and electric heating. When encountering special circumstances, when photothermal heating and electric heating cannot be used, finally consider using a gas-fired water-jacketed furnace for gas heating. It can be seen that the present invention can realize the multi-energy complementary operation of four modes of "photothermal heating", "photothermal + electric heating", "electric heating" and "gas heating". The use of electric heating and gas water jacket furnace for gas heating is only used in special circumstances, which significantly reduces the frequency of use of these two heating methods, thereby effectively solving the problem of increased carbon emissions when only using gas water jacket furnaces or electric heating furnaces, and at the same time solving the problem that the heating effect of produced fluids is affected due to the unstable photothermal utilization effect in high-latitude areas in winter, so that the oilfield gathering and transportation heating can be stably operated while the clean energy utilization efficiency is optimized, realizing a low-carbon gathering and transportation heating process.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the working principle of a multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process of the present invention;

[0026] Figure 2 This is a schematic diagram of a multi-energy complementary heating system for heating produced fluid in an oilfield gathering and transportation process according to an embodiment of the present invention.

[0027] In the figure: 100-solar collector; 101-water tank; 102-heat exchange tube; 200-gas-fired water-jacketed boiler; 300-stop valve; 400-circulating pump; 500-gas-liquid separator; 501-high-level tank; 502-low-level tank; 600-ball valve; 700-temperature transmitter; 800-pressure transmitter; 900-electromagnetic flowmeter; 901-vortex flowmeter; 902-pressure gauge. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Combination Figure 1 and Figure 2 As shown, an embodiment of the present invention is a multi-energy complementary heating system for heating produced fluid in an oilfield gathering and transportation process, comprising a solar thermal collection system, a gas-fired water-jacketed furnace 200 and an electric heating module. The solar thermal collection system comprises a solar thermal collector 100, a water tank 101 and a heat exchange tube 102. The heat exchange tube 102 is used for circulating heat exchange between the solar thermal collector 100 and the water tank 101. Specifically, the solar thermal collector 100 converts the sun's radiation energy into thermal energy. After the heat exchange medium in the heat exchange tube 102 absorbs the thermal energy, the thermal energy is exchanged with the cold water in the water tank 101 to heat the cold water in the water tank 101. The hot water input end and the cold water output end of the gas-fired water jacket furnace 200 are connected to the hot water output end and the cold water input end of the water tank 101, respectively. The hot water circulated in the gas-fired water jacket furnace 200 is used to heat the produced liquid. Specifically, after the cold water in the water tank 101 is heated, it exchanges heat with the produced liquid passing through the gas-fired water jacket furnace 200 to heat the produced liquid. The water after the heat exchange continues to circulate to the water tank 101 to exchange heat with the heat exchange medium carrying heat energy in the heat exchange tube 102. The electric heating module is arranged in the water tank 101 to heat the water in the water tank 101. That is, the electric heating module arranged in the water tank 101 can also be used to heat the cold water in the water tank 101.

[0030] It should be understood that the gas-fired water-jacketed furnace 200 can also directly heat the water inside it, and the heated water can then heat the produced liquid.

[0031] In one embodiment, a stop valve 300 is provided on the pipe section of the heat exchange tube 102 before the heat exchange, and a circulation pump 400 is provided on the pipe section of the heat exchange tube 102 after the heat exchange. The stop valve 300 on the pipe section before the heat exchange is used to control the flow of the heat exchange medium in the heat exchange tube, and the circulation pump 400 on the pipe section after the heat exchange is used to pump the heat exchange medium.

[0032] In one embodiment, a stop valve 300 and a circulation pump 400 are arranged between the cold water output end of the gas-fired water jacket boiler 200 and the cold water input end of the water tank 101. The stop valve 300 arranged between the cold water output end of the gas-fired water jacket boiler 200 and the cold water input end of the water tank 101 is used to control the amount of cold water flowing into the water tank, and the circulation pump 400 arranged between the cold water output end of the gas-fired water jacket boiler 200 and the cold water input end of the water tank 101 is used to pump cold water into the water tank.

[0033] Specifically, by controlling the multi-energy complementary heating system for heating produced fluids in the oilfield gathering and transportation process provided by the present invention, the switching of heating heat sources can be realized, and the four multi-energy complementary operations of "photothermal heating", "photothermal + electric heating", "electric heating" and "gas heating" can be realized according to the temperature of each node of the system, so that the oilfield gathering and transportation heating can operate stably while optimizing the utilization efficiency of clean energy. The four heating methods are described below:

[0034] Heating method 1: Photothermal heating

[0035] The solar collector absorbs the sun's heat to heat the heat-absorbing medium heat transfer oil in the heat exchange tube. Through the circulation pump, the heat of the heat transfer oil is transferred to the heat-absorbing medium water in the water tank (heat source center). The hot water after absorbing the heat is sent to the gas-fired water-jacketed boiler through the circulation pump to heat the crude oil (produced liquid).

[0036] Heating method 2: photothermal heating + electric heating

[0037] The water tank is equipped with an electric heating module (electric heating tube). In winter, when there is no light or little light, there is insufficient heat, and a small amount of electric heating coupling can be used to meet the heating demand and reduce energy consumption.

[0038] Heating method three: electric heating

[0039] When the heat of the solar thermal system is insufficient and the heat exchange conditions are not met, the electric heating tube in the water tank is started to increase the temperature.

[0040] Heating method 4: gas heating method

[0041] In an emergency situation when both solar thermal and electric heating are unable to work, the gas-fired water-jacketed boiler is started to ensure heating for crude oil gathering and transportation.

[0042] On the basis of the above embodiments, as a more preferred embodiment, Figure 2As shown, a heat exchange medium processing system is provided on the heat exchange tube 102 on the tube section after heat exchange, and the heat exchange medium processing system is used to process the heat exchange medium after heat exchange in the heat exchange tube 102 .

[0043] like Figure 2 As shown, preferably, the heat exchange medium processing system includes a gas-liquid separator 500 and a high-level tank 501. The gas-liquid separator 500 is connected to the pipe section of the heat exchange tube 102 after heat exchange, and the gas output end of the gas-liquid separator 500 is connected to the high-level tank 501. Specifically, after the heat exchange medium heat transfer oil in the heat exchange tube passes through the gas-liquid separator 500, the carried gas is separated and discharged through the high-level tank 501, which is conducive to the cleaning and unblocking of the heat transfer oil in the heat exchange tube and is conducive to improving the heat exchange effect.

[0044] In one embodiment, if Figure 2 As shown, the heat exchange medium processing system further includes a low-level tank 502, the input end of the low-level tank 502 is connected to the liquid output end of the gas-liquid separator 500, and a stop valve 300 is provided between the input end of the low-level tank 502 and the liquid output end of the gas-liquid separator 500. Specifically, in special cases (for example, when the volume expansion is serious due to excessively high temperature of the heat exchange oil), the low-level tank 502 can be used to temporarily store the heat transfer oil of the heat exchange medium in the system, and after opening the stop valve 300 between the input end of the low-level tank 502 and the liquid output end of the gas-liquid separator 500, the heat transfer oil enters the low-level tank 502.

[0045] Preferably, the output end of the low-level tank 502 is connected to the input end of the high-level tank 501, and a stop valve 300 and a circulation pump 400 are provided between the output end of the low-level tank 502 and the input end of the high-level tank 501. Specifically, by opening the stop valve 300 provided between the output end of the low-level tank 502 and the input end of the high-level tank 501, the heat transfer oil can be pumped into the heat exchange pipe loop again by using the circulation pump 400 provided between the two.

[0046] For example, Figure 2 As shown, a refueling port is provided on the pipeline between the output end of the low-level tank 502 and the input end of the high-level tank 501, through which heat transfer oil is added to the heat exchange tube loop.

[0047] like Figure 2 As shown, in one embodiment, a temperature transmitter 700 and a pressure transmitter 800 are provided on the pipe section before heat exchange and the pipe section after heat exchange on the heat exchange pipe 102. An electromagnetic flowmeter 900 and a temperature transmitter 700 are provided between the hot water input end of the gas-fired water jacket boiler 200 and the hot water output end of the water tank 101.

[0048] Specific examples, combined Figure 2As shown, in order to make the multi-energy complementary heating system operate reliably, on each pipeline, a stop valve 300, a circulation pump 400, a ball valve 600, a temperature transmitter 700, a pressure transmitter 800, an electromagnetic flowmeter 900, a vortex flowmeter 901 and a pressure gauge 902 are correspondingly arranged according to the characteristics of the pipeline. At the same time, bypasses are arranged in the heat transfer medium thermal oil circulation pipeline and the hot water circulation pipeline to better ensure the stable and reliable operation of the system.

[0049] On the basis of the above embodiments, the multi-energy complementary heating system also includes: a control module, which is connected to the solar thermal collection system, the gas water jacket furnace 200 and the electric heating module, and is used to control the solar thermal collection system, the gas water jacket furnace 200 and the electric heating module. The control module is connected to each signal acquisition module in the pipeline (temperature transmitter and pressure transmitter, etc.), and the heating mode of the multi-energy complementary heating system is automatically controlled by using the signals collected by the control module and each signal acquisition module to realize intelligent switching of the heating heat source.

[0050] Specifically, the multi-energy complementary heating system of this embodiment uses two sets of circulating pumps to transfer heat from the collector to the water tank after two heat exchanges, and then transfers it from the water tank to the water jacket furnace to exchange heat for the produced liquid. The heating mode can be switched and complemented according to actual conditions, and the entire process can be operated autonomously by the automatic control system. The multi-energy complementary heating method with solar energy as the main energy source and electricity and natural gas as the auxiliary energy sources is adopted. Under the optimization and regulation of the intelligent thermal control system, the problem of heating of thin oil gathering and transportation is solved, and a low-carbon gathering and transportation heating process is realized.

[0051] The present invention utilizes the organic combination of photothermal heating technology and electric heating and gas heating to operate complementary operations, using indirect heating to meet the production needs of the oil field gathering and transportation system to ensure stable crude oil heating and achieve optimal energy utilization. The multi-energy complementary heating system of the present invention is equipped with a solar thermal collection system, using thermal oil as the working fluid for heat exchange, and a ground water storage tank as the heat source center. The heat in the collector is stored in the heat source center through the circulation of thermal oil; at the same time, the photothermal system can be coupled with electric heating (configured in the heat source center) to operate joint heating, and the hot water in the heat source center exchanges heat with the produced liquid to meet the heating needs of crude oil gathering and transportation. While the original gas-fired water-jacketed furnace serves as a crude oil heat exchanger, it retains the gas heating function for emergencies such as when photothermal and electric heating cannot work.

[0052] In a specific embodiment, the 37# metering station in the Huoshaoshan operation area of ​​the Zhundong Oil Production Plant of Xinjiang Oilfield Company is used as an example for explanation. The metering station produces 60 tons of liquid per day. The original gas heating furnace is used to heat the incoming liquid, and the future liquid is raised from 28°C to about 36°C. After the process transformation, the multi-energy complementary heating system provided by the present invention is configured, including 385KW trough collectors and 55-ton hot water storage tanks and other equipment, and solar energy and auxiliary electric heating methods are used to replace the water jacket furnace to heat the produced liquid, which greatly reduces the frequency of use of electric heating methods and gas heating methods of gas water jacket furnaces, solves the problem of increased carbon emissions when using only gas water jacket furnaces or electric heating furnaces, and solves the problem that the heating effect of produced liquid is affected due to the unstable light and heat utilization effect in high-latitude areas in winter.

[0053] In one embodiment, the multi-energy complementary heating system is divided into: a solar thermal collection system, a heat storage and exchange system, an electric heating module and a gas-fired water jacket furnace. Each part has an independent heating function and its own industrial control facilities; the solar thermal collection system collects heat to heat the thermal oil, and the thermal oil circulates through the heat exchanger in the storage tank to transfer the heat to the heat storage and exchange system; the heat storage and exchange system receives solar heat and also has an electric heating auxiliary function, and is connected to the water body of the water jacket furnace, and transfers heat to the boiler water of the water jacket furnace through water circulation; in the water jacket furnace, the boiler water and the produced liquid exchange heat to achieve the purpose of heat exchange. The water jacket furnace is a normal pressure hot water boiler, which adopts a natural gas burner heating method and has its own temperature control capability.

[0054] According to the design concept of clean substitution, the heating priority of each facility is carried out according to solar energy, electric heating, and gas heating. Because the heat source center (heat storage tank) is in the middle position between the three systems, it is used as the system center to integrate the control system and circulation system of the system. Through the internal logic and communication control of the automated electronic control system, the start and stop of each heating facility are controlled. When there is sufficient solar energy, solar energy is given priority to participate in the heating work; when solar energy resources are weak, electric heating or gas heating is used to supplement it. After testing, the multi-energy complementary hydrothermal system is used to replace the original gas heating furnace for heating, which can meet the low-carbon and energy-saving operation of the system. At the same time, because the frequency of use of gas-fired water-jacketed furnaces and electric heating furnaces is reduced, the following problems existing in gas-fired water-jacketed furnaces and electric heating furnaces can also be solved:

[0055] For gas-fired water-jacketed furnaces, it helps solve the following problems: 1) residual flue gas and dust accumulation cause pitting of furnace tubes, resulting in equipment corrosion and explosion hazards; 2) the large amount of natural gas used for heating with crude oil affects the commodity rate of natural gas; 3) the problem of unstable heating due to the amount of associated gas; 4) high energy consumption and greenhouse gas emissions.

[0056] For electric heating furnaces, it is helpful to solve: 1) the problem of improper temperature control that easily leads to coking of pipelines; 2) the problem of high operating costs; 3) the problem of high carbon emissions.

[0057] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process, characterized in that: include: A solar thermal collection system, the solar thermal collection system comprising a solar thermal collector (100), a water tank (101) and a heat exchange tube (102), wherein the solar thermal collector (100) and the water tank (101) are used for circulating heat exchange by using the heat exchange tube (102); A gas-fired water-jacketed furnace (200), wherein a hot water input end and a cold water output end of the gas-fired water-jacketed furnace (200) are respectively connected to a hot water output end and a cold water input end of the water tank (101), and hot water circulated in the gas-fired water-jacketed furnace (200) is used to heat produced fluid; An electric heating module, the electric heating module is arranged in the water tank (101) and is used to heat the water in the water tank (101).

2. The multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process according to claim 1, characterized in that: A stop valve (300) is provided on the pipe section of the heat exchange pipe (102) before heat exchange, and a circulation pump (400) is provided on the pipe section of the heat exchange pipe (102) after heat exchange.

3. The multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process according to claim 1, characterized in that: A stop valve (300) and a circulation pump (400) are provided between the cold water output end of the gas-fired water jacket furnace (200) and the cold water input end of the water tank (101).

4. The multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process according to claim 1, characterized in that: A heat exchange medium processing system is disposed on the heat exchange tube (102) on the tube section after heat exchange, and the heat exchange medium processing system is used to process the heat exchange medium after heat exchange in the heat exchange tube (102).

5. The multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process according to claim 4, characterized in that: The heat exchange medium processing system comprises a gas-liquid separator (500) and a high-level tank (501); the gas-liquid separator (500) is connected to the pipe section located after the heat exchange on the heat exchange pipe (102); and the gas output end of the gas-liquid separator (500) is connected to the high-level tank (501).

6. The multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process according to claim 5, characterized in that: The heat exchange medium processing system also includes a low-level tank (502), the input end of the low-level tank (502) is connected to the liquid output end of the gas-liquid separator (500), and a stop valve (300) is provided between the input end of the low-level tank (502) and the liquid output end of the gas-liquid separator (500).

7. A multi-energy complementary heating system for heating produced fluid in the oilfield gathering and transportation process according to claim 6, characterized in that: The output end of the low-level tank (502) is connected to the input end of the high-level tank (501), and a stop valve (300) and a circulation pump (400) are provided between the output end of the low-level tank (502) and the input end of the high-level tank (501).

8. The multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process according to claim 1, characterized in that: A temperature transmitter (700) and a pressure transmitter (800) are provided on the heat exchange tube (102) on the tube section before heat exchange and on the tube section after heat exchange.

9. The multi-energy complementary heating system for heating produced fluid in the oilfield gathering and transportation process according to claim 1, characterized in that: An electromagnetic flowmeter (900) and a temperature transmitter (700) are provided between the hot water input end of the gas-fired water jacket furnace (200) and the hot water output end of the water tank (101).

10. The multi-energy complementary heating system for heating produced fluid in the oil field gathering and transportation process according to claim 1, characterized in that: The multi-energy complementary heating system also includes: A control module, wherein the control module is connected to the solar thermal collection system, the gas-fired water jacket furnace (200) and the electric heating module, and is used to control the solar thermal collection system, the gas-fired water jacket furnace (200) and the electric heating module.

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