Multi-functional self-circulation device for oil field integrated station

Abstract

The utility model relates to petroleum production technical field discloses a kind of multi-energy complementary oilfield joint station self-circulation comprehensive device, it includes three-phase separator, oil liquid preheater, oil liquid storage tank, oil liquid heat insulator, dehydration tank, gas dissolving tank, sewage purification pond, waste heat exchanger, heat pump, low-temperature crude oil conveying pipeline, oil-containing sewage conveying pipeline, combustible gas conveying pipeline, high-temperature sewage conveying pipeline, high-temperature crude oil conveying pipeline, crude oil output pipeline, first circulating water pipeline and second circulating water pipeline.The utility model makes the heat energy of high-temperature sewage and high-temperature crude oil be fully utilized, and multiple heat energy is mutually complementary in joint station system to form self-circulation, avoid heat energy waste, realize energy saving and consumption reduction, with good economic benefit;High-temperature crude oil becomes low-temperature crude oil, high-temperature sewage becomes low-temperature sewage, and sewage purification effect is further improved, with good environmental benefit.

Description

Technical Field

[0001] This utility model relates to the field of petroleum production technology, specifically to a multi-energy complementary self-circulating integrated device for an oilfield joint station. Background Technology

[0002] An oilfield integrated station is short for a centralized oil and gas processing station, serving as the central hub for crude oil gathering, transportation, and processing in oilfields. Currently, the oil heating and processing process at an oilfield integrated station typically involves the transported oil first passing through a three-phase separator to separate highly concentrated crude oil, oily wastewater, and combustible gases. The separated crude oil is then heated to a set temperature in a heater before entering a dehydration tank for high-temperature dehydration. Crude oil with the required water content is pumped out, while the high-temperature wastewater from the dehydration separation flows into the integrated station's wastewater system. However, the waste heat from the high-temperature wastewater and the heat generated by the high-temperature crude oil in the dehydration tank are not fully utilized, and both the high-temperature wastewater and oily wastewater require further purification. Patent searches reveal that while patent CN201184169Y relates to integrated stations, it discloses a water replenishment device for the heating furnace, which is unrelated to the problem addressed by this utility model. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a multi-energy complementary self-circulating integrated device for oilfield combined stations, the technical solution of which is as follows: A multi-energy complementary self-circulating integrated unit for an oilfield joint station includes a three-phase separator, an oil preheater, an oil storage tank, an oil insulation unit, a dehydration tank, a dissolved gas tank, a wastewater purification tank, a waste heat exchanger, a heat pump, a cryogenic crude oil transport pipeline, an oily wastewater transport pipeline, a combustible gas transport pipeline, a high-temperature wastewater transport pipeline, a high-temperature crude oil transport pipeline, a crude oil output pipeline, a first circulating water pipeline, and a second circulating water pipeline. The oil insulation unit is installed outside the oil storage tank. The cryogenic crude oil transport pipeline starts at the crude oil output end of the three-phase separator, and the oil preheater, oil storage tank, and dehydration tank are connected in series along the pipeline. The oily wastewater transport pipeline starts at the three-phase separator. The oily wastewater output end of the separator is connected in series with a dissolved gas tank and a wastewater purification tank. The combustible gas delivery pipeline starts at the combustible gas output end of the three-phase separator and ends at a heat pump. The high-temperature wastewater delivery pipeline starts at the high-temperature wastewater output end of the dehydration tank and connects in series with an oil insulation unit, an oil preheater, a waste heat exchanger, and a wastewater purification tank. The high-temperature crude oil delivery pipeline starts at the high-temperature crude oil output end of the dehydration tank and ends at a waste heat exchanger that is connected to the crude oil output pipeline. The first circulating water pipeline is a closed-loop structure and is connected to both the waste heat exchanger and the heat pump. The second circulating water pipeline is a closed-loop structure and is connected to both the oil insulation unit and the heat pump.

[0004] Furthermore, the heat pump is connected to a combustion replenishment pipe.

[0005] Furthermore, the heat pump is a multi-heat source composite heat pump.

[0006] Furthermore, the output end of the dissolved gas tank is equipped with a crude oil branch pipe.

[0007] Furthermore, the crude oil branch pipe is connected to the crude oil output pipeline.

[0008] Furthermore, the wastewater purification tank is equipped with a drain pipe at its output end.

[0009] Furthermore, the input end of the three-phase separator is provided with an oil injection pipe.

[0010] Furthermore, a first circulating water pump is installed on the first circulating water pipeline.

[0011] Furthermore, a second circulating water pump is installed on the second circulating water pipeline.

[0012] Compared with the prior art, the present invention mainly has the following beneficial technical effects: 1. The thermal energy of high-temperature wastewater and high-temperature crude oil can be fully utilized, and multiple thermal energy sources complement each other to form a self-circulation within the combined station system, avoiding thermal energy waste, achieving energy conservation and consumption reduction, and having good economic benefits.

[0013] 2. High-temperature crude oil is transformed into low-temperature crude oil, and high-temperature wastewater is transformed into low-temperature wastewater, further improving the wastewater purification effect and providing good environmental benefits.

[0014] 3. By adding high-temperature sewage transport pipelines, oil insulators, and waste heat exchangers, the thermal energy of high-temperature sewage can be fully utilized.

[0015] 4. By adding a high-temperature crude oil transportation pipeline and using a waste heat exchanger, the thermal energy of the high-temperature crude oil can be fully utilized.

[0016] 5. By adding a heat pump, combustion replenishment pipe, first circulating water pipeline, second circulating water pipeline, first circulating water pump and second circulating water pump, and cooperating with waste heat exchanger, high-temperature sewage conveying pipeline and high-temperature crude oil conveying pipeline, the heat energy of high-temperature sewage, high-temperature crude oil and gas combustion can complement each other, and form a self-circulation of heat energy within the combined station system, so that high-temperature sewage becomes low-temperature sewage and high-temperature crude oil becomes low-temperature crude oil, and at the same time, it also supplements the heat source for oil insulation device.

[0017] 6. Further purify the wastewater by adding oily wastewater transport pipelines, dissolved air tanks, and wastewater purification ponds. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] In the diagram: 1-Three-phase separator, 2-Oil preheater, 3-Oil storage tank, 4-Oil insulator, 5-Dehydration tank, 6-Dissolved gas tank, 7-Sewage purification tank, 8-Waste heat exchanger, 9-Heat pump, 10-First circulating water pump, 11-Second circulating water pump, 12-Low-temperature crude oil transport pipeline, 13-High-temperature sewage transport pipeline, 14-High-temperature crude oil transport pipeline, 15-Crude oil output pipeline, 16-Oil-containing sewage transport pipeline, 17-Combustible gas transport pipeline, 18-Combustion replenishment pipe, 19-First circulating water pipeline, 20-Second circulating water pipeline, 21-Crude oil branch pipe, 22-Oil injection pipe, 23-Drainage pipe. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the embodiments and accompanying drawings. Example 1

[0021] See Figure 1 A multi-energy complementary self-circulating integrated unit for an oilfield joint station includes a three-phase separator 1, an oil preheater 2, an oil storage tank 3, an oil insulation unit 4, a dehydration tank 5, a dissolved gas tank 6, a wastewater purification tank 7, a waste heat exchanger 8, a heat pump 9, a low-temperature crude oil transport pipeline 12, an oily wastewater transport pipeline 16, a combustible gas transport pipeline 17, a high-temperature wastewater transport pipeline 13, a high-temperature crude oil transport pipeline 14, a crude oil output pipeline 15, a first circulating water pipeline 19, and a second circulating water pipeline 20; the oil insulation unit 4 is installed outside the oil storage tank 3; the starting end of the low-temperature crude oil transport pipeline 12 is connected to the crude oil liquid output end of the three-phase separator 1, and the oil preheater 2, the oil storage tank 3, and the dehydration tank 5 are connected in series on the line; the starting end of the oily wastewater transport pipeline 16 is connected to... The oily wastewater output end of the three-phase separator 1 is connected to the dissolved gas tank 6 and the wastewater purification tank 7 in series on the line; the starting end of the combustible gas conveying pipeline 17 is connected to the combustible gas output end of the three-phase separator 1, and the ending end is connected to the heat pump 9; the starting end of the high-temperature wastewater conveying pipeline 13 is connected to the high-temperature wastewater output end of the dehydration tank 5, and the oil insulation unit 4, the oil preheater 2, the waste heat exchanger 8 and the wastewater purification tank 7 are connected in series on the line; the starting end of the high-temperature crude oil conveying pipeline 14 is connected to the high-temperature crude oil output end of the dehydration tank 5, and the ending end is connected to the waste heat exchanger 8 and is connected to the crude oil output pipeline 15; the first circulating water pipeline 19 is a closed loop structure and is connected to the waste heat exchanger 8 and the heat pump 9 respectively; the second circulating water pipeline 20 is a closed loop structure and is connected to the oil insulation unit 4 and the heat pump 9 respectively. Example 2

[0022] See Figure 1A multi-energy complementary self-circulating integrated unit for an oilfield joint station includes a three-phase separator 1, an oil preheater 2, an oil storage tank 3, an oil insulation unit 4, a dehydration tank 5, a dissolved gas tank 6, a wastewater purification tank 7, a waste heat exchanger 8, a heat pump 9, a low-temperature crude oil transport pipeline 12, an oily wastewater transport pipeline 16, a combustible gas transport pipeline 17, a high-temperature wastewater transport pipeline 13, a high-temperature crude oil transport pipeline 14, a crude oil output pipeline 15, a first circulating water pipeline 19, and a second circulating water pipeline 20; the oil insulation unit 4 is installed outside the oil storage tank 3; the starting end of the low-temperature crude oil transport pipeline 12 is connected to the crude oil liquid output end of the three-phase separator 1, and the oil preheater 2, the oil storage tank 3, and the dehydration tank 5 are connected in series on the line; the starting end of the oily wastewater transport pipeline 16 is connected to... The oily wastewater output end of the three-phase separator 1 is connected to the dissolved gas tank 6 and the wastewater purification tank 7 in series on the line; the starting end of the combustible gas conveying pipeline 17 is connected to the combustible gas output end of the three-phase separator 1, and the ending end is connected to the heat pump 9; the starting end of the high-temperature wastewater conveying pipeline 13 is connected to the high-temperature wastewater output end of the dehydration tank 5, and the oil insulation unit 4, the oil preheater 2, the waste heat exchanger 8 and the wastewater purification tank 7 are connected in series on the line; the starting end of the high-temperature crude oil conveying pipeline 14 is connected to the high-temperature crude oil output end of the dehydration tank 5, and the ending end is connected to the waste heat exchanger 8 and is connected to the crude oil output pipeline 15; the first circulating water pipeline 19 is a closed loop structure and is connected to the waste heat exchanger 8 and the heat pump 9 respectively; the second circulating water pipeline 20 is a closed loop structure and is connected to the oil insulation unit 4 and the heat pump 9 respectively.

[0023] The heat pump 9 is connected to a combustion supplement pipe 18; and the heat pump 9 is a multi-heat source composite heat pump to facilitate the use of multiple heat sources. Example 3

[0024] See Figure 1A multi-energy complementary self-circulating integrated unit for an oilfield joint station includes a three-phase separator 1, an oil preheater 2, an oil storage tank 3, an oil insulation unit 4, a dehydration tank 5, a dissolved gas tank 6, a wastewater purification tank 7, a waste heat exchanger 8, a heat pump 9, a low-temperature crude oil transport pipeline 12, an oily wastewater transport pipeline 16, a combustible gas transport pipeline 17, a high-temperature wastewater transport pipeline 13, a high-temperature crude oil transport pipeline 14, a crude oil output pipeline 15, a first circulating water pipeline 19, and a second circulating water pipeline 20; the oil insulation unit 4 is installed outside the oil storage tank 3; the starting end of the low-temperature crude oil transport pipeline 12 is connected to the crude oil liquid output end of the three-phase separator 1, and the oil preheater 2, the oil storage tank 3, and the dehydration tank 5 are connected in series on the line; the starting end of the oily wastewater transport pipeline 16 is connected to... The oily wastewater output end of the three-phase separator 1 is connected to the dissolved gas tank 6 and the wastewater purification tank 7 in series on the line; the starting end of the combustible gas conveying pipeline 17 is connected to the combustible gas output end of the three-phase separator 1, and the ending end is connected to the heat pump 9; the starting end of the high-temperature wastewater conveying pipeline 13 is connected to the high-temperature wastewater output end of the dehydration tank 5, and the oil insulation unit 4, the oil preheater 2, the waste heat exchanger 8 and the wastewater purification tank 7 are connected in series on the line; the starting end of the high-temperature crude oil conveying pipeline 14 is connected to the high-temperature crude oil output end of the dehydration tank 5, and the ending end is connected to the waste heat exchanger 8 and is connected to the crude oil output pipeline 15; the first circulating water pipeline 19 is a closed loop structure and is connected to the waste heat exchanger 8 and the heat pump 9 respectively; the second circulating water pipeline 20 is a closed loop structure and is connected to the oil insulation unit 4 and the heat pump 9 respectively.

[0025] The heat pump 9 is connected to a combustion supplement pipe 18; and the heat pump 9 is a multi-heat source composite heat pump to facilitate the use of multiple heat sources.

[0026] The output end of the dissolved gas tank 6 is equipped with a crude oil branch pipe 21, which is connected to the crude oil output pipeline 15, so that the crude oil separated from the dissolved gas tank 6 and the crude oil from the dehydration tank 5 are collected and output. Example 4

[0027] See Figure 1A multi-energy complementary self-circulating integrated unit for an oilfield joint station includes a three-phase separator 1, an oil preheater 2, an oil storage tank 3, an oil insulation unit 4, a dehydration tank 5, a dissolved gas tank 6, a wastewater purification tank 7, a waste heat exchanger 8, a heat pump 9, a low-temperature crude oil transport pipeline 12, an oily wastewater transport pipeline 16, a combustible gas transport pipeline 17, a high-temperature wastewater transport pipeline 13, a high-temperature crude oil transport pipeline 14, a crude oil output pipeline 15, a first circulating water pipeline 19, and a second circulating water pipeline 20; the oil insulation unit 4 is installed outside the oil storage tank 3; the starting end of the low-temperature crude oil transport pipeline 12 is connected to the crude oil liquid output end of the three-phase separator 1, and the oil preheater 2, the oil storage tank 3, and the dehydration tank 5 are connected in series on the line; the starting end of the oily wastewater transport pipeline 16 is connected to... The oily wastewater output end of the three-phase separator 1 is connected to the dissolved gas tank 6 and the wastewater purification tank 7 in series on the line; the starting end of the combustible gas conveying pipeline 17 is connected to the combustible gas output end of the three-phase separator 1, and the ending end is connected to the heat pump 9; the starting end of the high-temperature wastewater conveying pipeline 13 is connected to the high-temperature wastewater output end of the dehydration tank 5, and the oil insulation unit 4, the oil preheater 2, the waste heat exchanger 8 and the wastewater purification tank 7 are connected in series on the line; the starting end of the high-temperature crude oil conveying pipeline 14 is connected to the high-temperature crude oil output end of the dehydration tank 5, and the ending end is connected to the waste heat exchanger 8 and is connected to the crude oil output pipeline 15; the first circulating water pipeline 19 is a closed loop structure and is connected to the waste heat exchanger 8 and the heat pump 9 respectively; the second circulating water pipeline 20 is a closed loop structure and is connected to the oil insulation unit 4 and the heat pump 9 respectively.

[0028] The heat pump 9 is connected to a combustion supplement pipe 18; and the heat pump 9 is a multi-heat source composite heat pump to facilitate the use of multiple heat sources.

[0029] The output end of the dissolved gas tank 6 is equipped with a crude oil branch pipe 21, which is connected to the crude oil output pipeline 15, so that the crude oil separated from the dissolved gas tank 6 and the crude oil from the dehydration tank 5 are collected and output.

[0030] The wastewater purification tank 7 is equipped with a drain pipe 23 at its output end for convenient drainage. Example 5

[0031] See Figure 1A multi-energy complementary self-circulating integrated unit for an oilfield joint station includes a three-phase separator 1, an oil preheater 2, an oil storage tank 3, an oil insulation unit 4, a dehydration tank 5, a dissolved gas tank 6, a wastewater purification tank 7, a waste heat exchanger 8, a heat pump 9, a low-temperature crude oil transport pipeline 12, an oily wastewater transport pipeline 16, a combustible gas transport pipeline 17, a high-temperature wastewater transport pipeline 13, a high-temperature crude oil transport pipeline 14, a crude oil output pipeline 15, a first circulating water pipeline 19, and a second circulating water pipeline 20; the oil insulation unit 4 is installed outside the oil storage tank 3; the starting end of the low-temperature crude oil transport pipeline 12 is connected to the crude oil liquid output end of the three-phase separator 1, and the oil preheater 2, the oil storage tank 3, and the dehydration tank 5 are connected in series on the line; the starting end of the oily wastewater transport pipeline 16 is connected to... The oily wastewater output end of the three-phase separator 1 is connected to the dissolved gas tank 6 and the wastewater purification tank 7 in series on the line; the starting end of the combustible gas conveying pipeline 17 is connected to the combustible gas output end of the three-phase separator 1, and the ending end is connected to the heat pump 9; the starting end of the high-temperature wastewater conveying pipeline 13 is connected to the high-temperature wastewater output end of the dehydration tank 5, and the oil insulation unit 4, the oil preheater 2, the waste heat exchanger 8 and the wastewater purification tank 7 are connected in series on the line; the starting end of the high-temperature crude oil conveying pipeline 14 is connected to the high-temperature crude oil output end of the dehydration tank 5, and the ending end is connected to the waste heat exchanger 8 and is connected to the crude oil output pipeline 15; the first circulating water pipeline 19 is a closed loop structure and is connected to the waste heat exchanger 8 and the heat pump 9 respectively; the second circulating water pipeline 20 is a closed loop structure and is connected to the oil insulation unit 4 and the heat pump 9 respectively.

[0032] The heat pump 9 is connected to a combustion supplement pipe 18; and the heat pump 9 is a multi-heat source composite heat pump to facilitate the use of multiple heat sources.

[0033] The output end of the dissolved gas tank 6 is equipped with a crude oil branch pipe 21, which is connected to the crude oil output pipeline 15, so that the crude oil separated from the dissolved gas tank 6 and the crude oil from the dehydration tank 5 are collected and output.

[0034] The wastewater purification tank 7 is equipped with a drain pipe 23 at its output end for convenient drainage.

[0035] The input end of the three-phase separator 1 is equipped with an oil injection pipe 22 to facilitate oil injection. Example 6

[0036] See Figure 1A multi-energy complementary self-circulating integrated unit for an oilfield joint station includes a three-phase separator 1, an oil preheater 2, an oil storage tank 3, an oil insulation unit 4, a dehydration tank 5, a dissolved gas tank 6, a wastewater purification tank 7, a waste heat exchanger 8, a heat pump 9, a low-temperature crude oil transport pipeline 12, an oily wastewater transport pipeline 16, a combustible gas transport pipeline 17, a high-temperature wastewater transport pipeline 13, a high-temperature crude oil transport pipeline 14, a crude oil output pipeline 15, a first circulating water pipeline 19, and a second circulating water pipeline 20; the oil insulation unit 4 is installed outside the oil storage tank 3; the starting end of the low-temperature crude oil transport pipeline 12 is connected to the crude oil liquid output end of the three-phase separator 1, and the oil preheater 2, the oil storage tank 3, and the dehydration tank 5 are connected in series on the line; the starting end of the oily wastewater transport pipeline 16 is connected to... The oily wastewater output end of the three-phase separator 1 is connected to the dissolved gas tank 6 and the wastewater purification tank 7 in series on the line; the starting end of the combustible gas conveying pipeline 17 is connected to the combustible gas output end of the three-phase separator 1, and the ending end is connected to the heat pump 9; the starting end of the high-temperature wastewater conveying pipeline 13 is connected to the high-temperature wastewater output end of the dehydration tank 5, and the oil insulation unit 4, the oil preheater 2, the waste heat exchanger 8 and the wastewater purification tank 7 are connected in series on the line; the starting end of the high-temperature crude oil conveying pipeline 14 is connected to the high-temperature crude oil output end of the dehydration tank 5, and the ending end is connected to the waste heat exchanger 8 and is connected to the crude oil output pipeline 15; the first circulating water pipeline 19 is a closed loop structure and is connected to the waste heat exchanger 8 and the heat pump 9 respectively; the second circulating water pipeline 20 is a closed loop structure and is connected to the oil insulation unit 4 and the heat pump 9 respectively.

[0037] The heat pump 9 is connected to a combustion supplement pipe 18; and the heat pump 9 is a multi-heat source composite heat pump to facilitate the use of multiple heat sources.

[0038] The output end of the dissolved gas tank 6 is equipped with a crude oil branch pipe 21, which is connected to the crude oil output pipeline 15, so that the crude oil separated from the dissolved gas tank 6 and the crude oil from the dehydration tank 5 are collected and output.

[0039] The wastewater purification tank 7 is equipped with a drain pipe 23 at its output end for convenient drainage.

[0040] The input end of the three-phase separator 1 is equipped with an oil injection pipe 22 to facilitate oil injection. A first circulating water pump 10 is installed on the first circulating water pipeline 19, and a second circulating water pump 11 is installed on the second circulating water pipeline 20. The preferred model of the first circulating water pump 10 is IS200-150-400, and the preferred model of the second circulating water pump 11 is MDZ-20-180. Both can be obtained from the market or through private customization.

[0041] To enable those skilled in the art to better understand this utility model, its basic working principle is briefly described below: When processing the oil extracted from the oilfield, the oil is injected into the three-phase separator 1 for three-phase separation, and the crude oil, oily wastewater and combustible gas are output through the low-temperature crude oil pipeline 12, the oily wastewater pipeline 16 and the combustible gas pipeline 17 respectively. Crude oil is heated sequentially through the low-temperature crude oil pipeline 12, passing through the oil preheater 2 and the oil storage tank 3 (with an external oil insulation unit 4), and then injected into the dehydration tank 5 for high-temperature dehydration. The dehydration tank 5 generates high-temperature wastewater and high-temperature crude oil, which are transported through the high-temperature wastewater pipeline 13 and the high-temperature crude oil pipeline 14, respectively. The high-temperature wastewater pipeline 13 passes sequentially through the oil insulation unit 4, the oil preheater 2, and the waste heat exchanger 8 before being injected into the wastewater purification tank 7, allowing the high-temperature wastewater to exchange heat sequentially through the oil insulation unit 4, the oil preheater 2, and the waste heat exchanger 8. At the same time, the high-temperature crude oil pipeline 14 passes the high-temperature crude oil through the waste heat exchanger 8 and then outputs it through the crude oil output pipeline 15. Oily wastewater pipeline 16 injects oily wastewater into dissolved air tank 6 for oil-liquid separation, generating low-temperature wastewater and low-temperature crude oil. The low-temperature wastewater is then transported to wastewater purification tank 7, and the low-temperature crude oil is transported to crude oil output pipeline 15 via crude oil branch pipe 21. Through dissolved air tank 6 and wastewater purification tank 7, the oily wastewater can be sequentially de-oiled and purified. Combustible gas pipeline 17 transports combustible gas to heat pump 9. Both combustible gas pipeline 17 and combustion replenishment pipe 18 transport combustible gas. Heat pump 9 replenishes combustible gas through combustion replenishment pipe 18 to achieve continuous heating. Both the first circulating water pipeline 19 and the second circulating water pipeline 20 are equipped with heat exchange medium. The first circulating water pump 10 and the second circulating water pump 11 pump the heat exchange medium in the first circulating water pipeline 19 and the second circulating water pipeline 20, respectively. The first circulating water pipeline 19 can pump the heat of the high-temperature sewage and high-temperature crude oil in the high-temperature sewage conveying pipeline 13 and the high-temperature crude oil conveying pipeline 14 to the heat pump 9 through the first circulating water pump 10. The second circulating water pipeline 20 can circulate the heat in the heat pump 9 to the oil insulation device 4 through the second circulating water pump 11. Then, the oil insulation device 4 can continuously heat and keep the preheated crude oil in the oil storage tank 3 through the high-temperature sewage conveying pipeline 13 and the second circulating water pipeline 20.

Claims

1. A multi-energy complementary self-circulating integrated unit for an oilfield combined station, characterized in that, The system includes a three-phase separator, an oil preheater, an oil storage tank, an oil insulator, a dehydration tank, a dissolved gas tank, a wastewater purification tank, a waste heat exchanger, a heat pump, a cryogenic crude oil transport pipeline, an oily wastewater transport pipeline, a combustible gas transport pipeline, a high-temperature wastewater transport pipeline, a high-temperature crude oil transport pipeline, a crude oil output pipeline, a first circulating water pipeline, and a second circulating water pipeline. The oil insulator is installed on the outside of the oil storage tank. The cryogenic crude oil transport pipeline starts at the crude oil output end of the three-phase separator, and the oil preheater, oil storage tank, and dehydration tank are connected in series along the pipeline. The oily wastewater transport pipeline starts at the oily wastewater output end of the three-phase separator. The pipeline is connected in series with a dissolved gas tank and a wastewater purification tank. The combustible gas pipeline starts at the combustible gas output end of the three-phase separator and ends at a heat pump. The high-temperature wastewater pipeline starts at the high-temperature wastewater output end of the dehydration tank and connects in series with an oil insulator, an oil preheater, a waste heat exchanger, and a wastewater purification tank. The high-temperature crude oil pipeline starts at the high-temperature crude oil output end of the dehydration tank and ends at a waste heat exchanger connected to the crude oil output pipeline. The first circulating water pipeline is a closed-loop structure and is connected to both a waste heat exchanger and a heat pump. The second circulating water pipeline is also a closed-loop structure and is connected to both an oil insulator and a heat pump.

2. The multi-energy complementary self-circulating integrated device for an oilfield joint station according to claim 1, characterized in that, The heat pump is connected to a combustion replenishment pipe.

3. The multi-energy complementary self-circulating integrated device for an oilfield joint station according to claim 1, characterized in that, The heat pump is a multi-heat source composite heat pump.

4. The multi-energy complementary self-circulating integrated device for an oilfield joint station according to claim 1, characterized in that, The output end of the dissolved gas tank is equipped with a crude oil branch pipe.

5. The multi-energy complementary self-circulating integrated device for an oilfield joint station according to claim 4, characterized in that, The crude oil branch pipe is connected to the crude oil output pipeline.

6. The multi-energy complementary self-circulating integrated device for an oilfield joint station according to claim 1, characterized in that, The wastewater purification tank is equipped with a drain pipe at its output end.

7. The multi-energy complementary self-circulating integrated device for an oilfield joint station according to claim 1, characterized in that, The input end of the three-phase separator is equipped with an oil injection pipe.

8. The multi-energy complementary self-circulating integrated device for an oilfield joint station according to claim 1, characterized in that, A first circulating water pump is installed on the first circulating water pipeline.

9. A multi-energy complementary oilfield joint station self-circulation integrated device according to claim 1, characterized in that, A second circulating water pump is installed on the second circulating water pipeline.

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