Integrated skid-mounted device and serialized splicing method

Abstract

The present invention provides an integrated skid-mounted device and a serialized splicing method. The skid-mounted device includes a heating and separation skid and an external transmission metering skid. The heating and separation skid and the external transmission metering skid are spliced ​​through a flange interface. A tank body is fixed on the heating and separation skid. The isolation plate in the tank body divides the inner cavity of the tank body into two chambers, namely a crude oil heating unit and a separation buffer unit. The water-containing crude oil is heated by the crude oil heating unit and enters the separation buffer unit for gas-liquid separation. The separated gas is discharged, and the liquid is transported to the external transmission control unit on the external transmission metering skid through a pipeline. After being pressurized by the external transmission control unit, the liquid is metered and transmitted to the lower-level station. The present invention is convenient for road transportation, on-site splicing and installation, saves space, is convenient for on-site maintenance and installation, reduces the cost of crude oil transfer, and also meets the on-site transportation conditions of the skid-mounted device.

Description

Technical Field

[0001] The invention belongs to the field of oil field surface process crude oil gathering and transportation, and in particular relates to an integrated skid-mounted device and a serialized splicing method. Background Art

[0002] At present, the transfer station is the core station in the construction of the ground engineering of the rolling development of oil fields. The smaller transfer stations use skid-mounted devices to meet the requirements of rapid oil field construction and save floor space. However, the larger transfer stations have multiple functions such as crude oil heating, pressurized transportation, metering, and associated gas transportation, which leads to more complex processes, heavier volume and weight. Especially in the extremely broken terrain of the loess plateau, there are problems such as insufficient turning radius and difficulty in climbing and descending. Specifically, the disadvantages of conventional transfer stations are:

[0003] 1. The construction period of a conventional transfer station is about 35 days, and it is greatly affected by the weather, with a long construction period and slow commissioning.

[0004] 2. The large-scale site heating and separation equipment is too bulky to be transported by road. In addition, in the case of changes in scale, it is difficult to transform it in the later stage, which is not suitable for the needs of rolling development of oil fields. Summary of the invention

[0005] The first purpose of the present invention is to reduce the floor space; the second purpose is to reduce the investment cost and shorten the construction period; the third purpose is to meet the on-site transportation conditions of the skid-mounted device.

[0006] To this end, the present invention provides an integrated skid-mounted device, including a plurality of heating and separation skids and an external transport metering skid, wherein the plurality of heating and separation skids are spliced ​​in sequence through flanges, wherein one of the heating and separation skids is spliced ​​with the external transport metering skid through a flange interface; a tank body is fixed on the heating and separation skid along its length direction, and an isolation plate is provided in the middle section of the tank body cavity, and the isolation plate divides the tank body cavity into two chambers, namely a crude oil heating unit and a separation buffer unit, and the other chamber is the separation buffer unit, and the water-containing crude oil is heated by the crude oil heating unit and enters the separation buffer unit for gas-liquid separation, the separated gas is discharged, and the liquid is transported to the external transport control unit on the external transport metering skid through a pipeline, and is metered and externally transported to a lower-level station after being pressurized by the external transport control unit.

[0007] Furthermore, the crude oil heating unit comprises a heating furnace placed in the tank chamber, a heat exchange coil, and a fully automatic burner and a chimney placed outside the tank body;

[0008] The heating furnace is horizontally placed in the chamber, and the heating furnace is connected to the full-automatic burner and the chimney, and the full-automatic burner and the chimney are respectively fixedly connected to the outer wall of the tank;

[0009] The heat exchange coil is coiled just above the heating furnace, the inlet end of the heat exchange coil is connected to the crude oil pipeline outside the tank body, and the outlet end passes through the isolation plate and extends into the chamber where the separation buffer unit is located.

[0010] Furthermore, an expansion water tank is installed on the top of the tank body, and the expansion water tank is connected to the inner cavity of the tank body and faces the heat exchange coil.

[0011] Furthermore, a manhole is provided on the top of the tank body, and the manhole faces the chamber where the crude oil heating unit is located.

[0012] Further, the separation buffer unit comprises an inlet diverter placed in the tank chamber, a defoaming component, a wave-breaking plate, a separation baffle, and a mist collector placed outside the tank body;

[0013] The inlet diverter is connected to the outlet end of the heat exchange coil, and the outlet of the inlet diverter is opposite to the defoaming component vertically fixed to the inner wall of the top of the tank body. The separation baffle is obliquely placed directly below the outlet of the inlet diverter. The wave-breaking plate is installed on the inner wall of the bottom of the tank body, and the mist collector is installed directly above the wave-breaking plate. The separation buffer liquid outlet is opened at the bottom of the tank chamber where the separation buffer unit is located.

[0014] Furthermore, the separation buffer liquid outlet is connected to a vortex breaker, and the vortex breaker is placed in the tank body.

[0015] Furthermore, there are two mist collectors, namely a labyrinth-type first-stage mist collector and a labyrinth-type second-stage mist collector. The labyrinth-type first-stage mist collector penetrates the inside and outside of the tank body and is installed on the top of the tank body. The labyrinth-type second-stage mist collector is connected to the labyrinth-type first-stage mist collector and is placed on the top outside the tank body.

[0016] Furthermore, the external transmission control unit includes an interlocking control electric valve, an external transmission pump and a frequency conversion controller. Each separation buffer liquid outlet on the heating separation skid is connected to a drainage pipeline, and several drainage pipelines merge into a main pipeline. The main pipeline is connected to the external transmission pump inlet through the interlocking control electric valve, and the external transmission pump outlet is connected to the lower station through a pipeline;

[0017] Two electronic liquid level gauges are installed on the upper and lower outer side walls of the tank where the separation buffer unit is located. The electronic liquid level gauges are interlocked with the interlock control electric valves, and the electronic liquid level gauges and the external transmission pumps are both connected to the frequency conversion controller.

[0018] Further, a serialized splicing method of an integrated skid-mounted device:

[0019] Open the valve on the crude oil pipeline, the water-containing crude oil enters the heat exchange coil, and the tank chamber where the crude oil heating unit is located is filled with water, then turn on the fully automatic burner to heat the heating furnace, the heating furnace transfers heat to the surrounding water, and the high-temperature flue gas is discharged from the chimney. During the heating process of water, the volume changes, and the expanded volume is absorbed by the expansion tank. The heating is continued for 15 to 30 minutes until the temperature of the heat exchange coil is 30 to 35 ° C, and then enters the separation buffer unit. The heated water-containing crude oil passes through the inlet diverter for preliminary separation of gas and liquid. The separated gas rises and enters the labyrinth-type first-level mist collector for primary liquid separation, and then passes through the labyrinth-type second-level mist collector for secondary liquid separation. The treated gas is discharged from the exhaust port of the tank, and the separated liquid is defoamed by the defoaming component, the separation baffle is used for convection type arrangement, and the wave-breaking plate is used for liquid level stabilization. When the electronic liquid level meter reaches the set value, the interlocking control electric valve opens the separation buffer liquid outlet, and the water-containing crude oil enters the external transfer pump. The external transfer pump is pressurized and metered, and then externally transferred to the lower-level station.

[0020] Furthermore, according to the actual liquid production of the oilfield development block, the spliced ​​heating separation skid and the external transmission metering skid replace the conventional transfer station. The conventional transfer station has two specifications, namely, the production capacity is 800m 3 / d conventional transfer station and production volume is 1000m 3 / d conventional transfer station; when replacing 800m 3 / d conventional transfer station, select 2 production capacity of 400m 3 / d heating separation skid, two heating separation skids and external metering skid are connected by flanges to form an integrated skid-mounted device; when replacing 1000m 3 / d conventional transfer station, select 1 with a production volume of 400m 3 / d heating separation skid and 1 production capacity of 600m 3 / d heating and separation skid, two heating and separation skids and the external metering skid are spliced ​​with flanges to form an integrated skid-mounted device.

[0021] Beneficial effects of the present invention:

[0022] (1) Based on the functions, the overall process flow is composed of the external pump skid process flow and the heating separation skid process flow. Through an interface connection, the process can be quickly spliced ​​together, while meeting the requirements of device serialization.

[0023] (2) How to replace large-scale conventional crude oil transfer stations with skid-mounted equipment so that the equipment can be easily transported by road, easily spliced ​​and installed on site, save space, be easy to repair and install on site, and reduce the cost of crude oil transfer while meeting the process flow conditions?

[0024] (3) The device integrates the main process equipment and pipelines of the transfer station into a skid-mounted system, extending the skid-mounted integrated design from small stations to medium-sized stations. This not only enriches the series of gathering and transportation stations, but also enhances the adaptability of ground construction to oilfield development.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a front view of the integrated skid-mounted unit.

[0027] Figure 2 is a top view of the integrated skid-mounted device.

[0028] Description of reference numerals:

[0029] 1. Fully automatic burner; 2. Heating furnace; 3. Chimney; 4. Heat exchange coil; 5. Expansion tank; 6. Manhole; 7. Inlet diverter; 8. Defoaming component; 9. Wave-breaking plate; 10. Labyrinth-type secondary mist collector; 11. Vortex breaker; 12. Liquid level meter; 13. External metering skid; 14. Labyrinth-type primary mist collector; 15. Separation baffle; 16. Heating and separation skid; 17. Tank; 18. Crude oil heating unit; 19. Separation buffer unit; 20. External control unit; 21. Separation buffer liquid outlet; 22. Interlock control electric valve; 23. External pump; 24. Frequency converter; 25. Isolation plate; 26. Flange. DETAILED DESCRIPTION

[0030] Embodiment 1:

[0031] like Figure 1 and Figure 2 As shown, this embodiment provides an integrated skid-mounted device, including a plurality of heating and separation skids 16 and an external transport metering skid 13, wherein the plurality of heating and separation skids 16 are spliced ​​in sequence through flanges 26, wherein one of the heating and separation skids 16 is spliced ​​with the external transport metering skid 13 through a flange interface; a tank body 17 is fixed to the heating and separation skid 16 along its length direction, and an isolation plate 25 is provided in the middle section of the inner cavity of the tank body 17, and the isolation plate 25 divides the inner cavity of the tank body 17 into two chambers, namely a crude oil heating unit 18 and a separation buffer unit 19.

[0032] The working principle of the integrated skid-mounted device is as follows: the water-containing crude oil is heated by the crude oil heating unit 18 and then enters the separation buffer unit 19 for gas-liquid separation, the separated gas is discharged, and the liquid is transported through a pipeline to the external transmission control unit 20 on the external transmission metering skid 13, and after being pressurized by the external transmission control unit 20, it is metered and transported to the lower-level station.

[0033] This embodiment is divided into a heating and separation skid and an external transmission metering skid according to the process flow. According to the needs of different scale transfer stations, multiple heating and separation skids can be combined and spliced, and then spliced ​​with an external transmission pump metering skid to achieve the functions of heating, separation, buffering, external transmission, and metering of water-containing oil in large and medium-sized transfer stations. Multiple heating and separation skids and an external transmission pump metering skid are spliced ​​on-site through flange interfaces to form heating, buffering and separation of water-containing crude oil, pressurized external transmission and metering of water-containing crude oil under different scale conditions, and combined skid installation for heating and separation of incoming liquid, and combined skid installation for pressurized external transmission and metering of water-containing crude oil.

[0034] The present invention adopts a split design and on-site skid-mounted splicing method, which meets the on-site transportation conditions of the skid-mounted device, realizes the scale serialization requirements, reduces the floor space, significantly reduces the investment, and fully meets the on-site requirements.

[0035] Embodiment 2:

[0036] On the basis of Example 1, Figure 1 As shown, the crude oil heating unit 18 includes a heating furnace 2 placed in the chamber of the tank body 17, a heat exchange coil 4, and a fully automatic burner 1 and a chimney 3 placed outside the tank body 17; the heating furnace 2 is placed horizontally in the chamber, the heating furnace 2 is connected to the fully automatic burner 1 and the chimney 3, and the fully automatic burner 1 and the chimney 3 are respectively fixedly connected to the outer wall of the tank body 17; the heat exchange coil 4 is coiled just above the heating furnace 2, the inlet end of the heat exchange coil 4 is connected to the crude oil pipeline outside the tank body 17, and the outlet end passes through the isolation plate 25 and extends into the chamber where the separation buffer unit 19 is located.

[0037] Specifically, the working process of the crude oil heating unit 18 is: open the inlet valve to allow the crude oil to enter the heat exchange coil 4 and fill the tank 17 with water, then start the fully automatic burner 1, and the high-temperature flue gas is discharged from the chimney through the heating furnace 2. At the same time, the heating furnace 2 transfers heat to the surrounding water, and the hot water heats the water-containing crude oil flowing through the heat exchange coil 4 to the temperature required for oil and gas separation (30-35°C and lasts for 20-30 minutes).

[0038] Embodiment 3:

[0039] On the basis of Example 2, Figure 1 As shown, an expansion water tank 5 is installed on the top of the tank body 17, and the expansion water tank 5 is connected to the inner cavity of the tank body 17 and faces the heat exchange coil 4. When the water is heated, the volume changes, and the expanded volume is absorbed by the expansion water tank 5.

[0040] A manhole 6 is provided on the top of the tank body 17, and the manhole 6 faces the chamber where the crude oil heating unit 18 is located. The manhole 6 is designed to facilitate the maintenance of the equipment.

[0041] Embodiment 4:

[0042] On the basis of Example 2, Figure 1 As shown, the separation buffer unit 19 includes an inlet diverter 7, a defoaming component 8, a wave-breaking plate 9, a separation baffle 15 and a mist collector placed outside the tank body 17, which are arranged in the chamber of the tank body 17; the inlet diverter 7 is connected to the outlet end of the heat exchange coil 4, and the outlet of the inlet diverter 7 is directly opposite to the defoaming component 8 vertically fixed on the top inner wall of the tank body 17, the separation baffle 15 is obliquely placed directly below the outlet of the inlet diverter 7, the wave-breaking plate 9 is installed on the bottom inner wall of the tank body 17, and the mist collector is installed directly above the wave-breaking plate 9. A separation buffer liquid outlet 21 is opened at the bottom of the chamber of the tank body 17 where the separation buffer unit 19 is located.

[0043] The separation buffer unit 19 separates gas and liquid. The crude oil entering the separation buffer unit 19 is divided into two paths, one is a gas path and the other is a liquid path. After the gas in the gas path passes through the top gas phase space, it enters the mist collector for liquid treatment, and the treated gas is discharged from the exhaust port; the water-containing crude oil in the liquid path passes through the separation baffle 15, the defoaming component 8, and the wave-breaking plate 9 in sequence to the solution space in the tank body 17.

[0044] It should be noted that the pre-separated water-containing crude oil flows into the separation baffle 15, where the flow pattern is arranged, and then enters the separation flow field with the oil-water mixture. A defoaming component 8 and a wave-breaking plate 9 are provided in the separation flow field to reduce the fluctuation caused by the fluid entering, provide a stable flow field condition for the oil-water droplets, and the sand and sludge in the separation process are regularly discharged through the sewage outlet. Specifically, the defoaming component 8 provides a large attachment area for the foam formed at the gas-liquid interface, so that the foam aggregates and breaks to enter the liquid layer.

[0045] Embodiment 5:

[0046] On the basis of Example 4, Figure 1 As shown, the separation buffer liquid outlet 21 is connected to the vortex preventer 11, and the vortex preventer 11 is placed in the tank body 17. The vortex preventer 11 can prevent the outlet from carrying gas into the tank body 17, causing cavitation of the external transport pump 23.

[0047] There are two mist collectors, namely a labyrinth-type primary mist collector 14 and a labyrinth-type secondary mist collector 10. The labyrinth-type primary mist collector 14 penetrates inside and outside the tank body 17 and is installed on the top of the tank body 17. The labyrinth-type secondary mist collector 10 is connected with the labyrinth-type primary mist collector 14 and is placed on the top outside the tank body 17. After passing through the top gas phase space, the gas path gas enters the labyrinth-type primary mist collector 14 for primary liquid separation, and then passes through the labyrinth-type secondary mist collector 10 for secondary liquid separation treatment, and the treated gas is discharged from the exhaust port.

[0048] Embodiment 6:

[0049] On the basis of Example 4, Figure 1As shown, the external transmission control unit 20 includes an interlocking control electric valve 22, an external transmission pump 23 and a frequency conversion controller 24. Each separation buffer liquid outlet 21 on the heating separation skid 16 is connected to a drainage pipeline, and several drainage pipelines merge into a main pipeline. The main pipeline is connected to the inlet of the external transmission pump 23 through the interlocking control electric valve 22, and the outlet of the external transmission pump 23 is connected to the lower-level station through a pipeline; two electronic liquid level gauges 12 are installed on the upper and lower outer walls of the tank body 17 where the separation buffer unit 19 is located. The electronic liquid level gauge 12 is interlocked with the interlocking control electric valve 22, and the electronic liquid level gauge 12 and the external transmission pump 23 are both connected to the frequency conversion controller 24.

[0050] The separated water-containing crude oil enters the buffer chamber (solution space). When the liquid level reaches the set value, the interlock control electric valve 22 opens the outlet of the water-containing crude oil. The vortex preventer 11 prevents gas from entering the outlet and causing cavitation of the external transfer pump 23. The water-containing crude oil enters the inlet of the external transfer pump 23. The external transfer pump 23 is pressurized and then metered, and then transferred to the lower-level station through the outlet.

[0051] Embodiment 7:

[0052] A serialized splicing method for an integrated skid-mounted device:

[0053] The valve on the crude oil pipeline is opened, and the water-containing crude oil enters the heat exchange coil 4, and the chamber of the tank 17 where the crude oil heating unit 18 is located is filled with water. Then the fully automatic burner 1 is turned on to heat the heating furnace 2. The heating furnace 2 transfers heat to the surrounding water. At the same time, the high-temperature flue gas is discharged from the chimney 3. During the heating process of water, the volume changes, and the expanded volume is absorbed by the expansion tank 5. The heating is continued for 15 to 30 minutes until the temperature of the heat exchange coil 4 is 30 to 35°C, and then enters the separation buffer unit 19. The heated water-containing crude oil passes through the inlet diverter 7 to the gas The liquid is initially separated, and the separated gas rises into the labyrinth-type primary mist collector 14 for primary liquid separation, and then passes through the labyrinth-type secondary mist collector 10 for secondary liquid separation. The treated gas is discharged from the exhaust port of the tank body 17, and the separated liquid is defoamed by the defoaming component 8, the separation baffle 15 is used for convection type arrangement, and the wave-breaking plate 9 is used for liquid level stabilization. When the electronic liquid level meter 12 reaches the set value, the interlocking control electric valve 22 opens the separation buffer liquid outlet 21, and the water-containing crude oil enters the external transmission pump 23. The external transmission pump 23 is pressurized and then measured, and then transmitted to the lower-level station.

[0054] Specifically, in combination with Figure 1 and 2 The device and crude oil processing method of the present invention are described and illustrated.

[0055] Step 1: Start the fully automatic burner 1, the high-temperature flue gas passes through the heating furnace 2 and is discharged from the chimney 3. At the same time, the heating furnace 2 transfers heat to the surrounding water. During the heating process of the water, the volume changes, and the expanded volume is absorbed by the expansion tank 5;

[0056] Step 2: The water-containing crude oil enters the heat exchange coil 4 through the inlet pipeline, and the hot water heats the water-containing crude oil flowing through the heat exchange coil 4 to the temperature required for oil-gas separation (30-35 degrees Celsius and lasts for 20-30 minutes); the heated water-containing crude oil passes through the inlet diverter 7 for preliminary separation of gas and liquid, and the defoaming component 8 provides a large attachment area for the foam formed at the gas-liquid interface, so that the foam aggregates and collapses and enters the liquid layer, and the gas enters the labyrinth-type primary mist collector 14 through the top gas phase space for primary liquid separation, and then passes through the labyrinth-type secondary mist collector 10 for secondary liquid separation treatment, and the treated gas is discharged from the exhaust port;

[0057] Step 3: The pre-separated water-containing crude oil flows into the separation baffle 15 to adjust the flow pattern, and then enters the separation flow field with the oil-water mixture. A defoaming component 8 and a wave-breaking plate 9 are arranged in the separation flow field to reduce the fluctuation caused by the fluid entering and provide a stable flow field condition for the oil-water droplets. The sand and sludge in the separation process are regularly discharged through the sewage outlet;

[0058] Step 4: The separated water-containing crude oil enters the buffer chamber (solution space). When the liquid level reaches the set value, the interlock control electric valve 22 opens the outlet of the water-containing crude oil. The vortex preventer 11 prevents the outlet from carrying gas into the outlet, causing cavitation of the external transfer pump 23. The water-containing crude oil enters the inlet of the external transfer pump 23. The external transfer pump 23 is pressurized and then metered, and then transferred to the lower-level station through the outlet.

[0059] According to the actual liquid production of the oilfield development block and the road transportation conditions in the oilfield, the heating separation skid 16 and the external metering skid 13 are spliced ​​to replace the conventional transfer station. The conventional transfer station has two specifications: production capacity of 800m 3 / d conventional transfer station and production volume is 1000m 3 / d conventional transfer station; when replacing 800m 3 / d conventional transfer station, select 2 production capacity of 400m 3 / d heating separation skid 16, two heating separation skids 16 and external metering skid 13 are spliced ​​into an integrated skid-mounted device through flange 26; when replacing 1000m 3 / d conventional transfer station, select 1 with a production volume of 400m 3 16 heating and separation skids with a production capacity of 600m3 / d 3 / d heating and separation skid 16, two heating and separation skids 16 and the external metering skid 13 are spliced ​​into an integrated skid-mounted device through a flange 26.

[0060] The skid-mounted splicing method of the present invention replaces large and medium-sized transfer stations and meets the requirements of rapid production in rolling development of oil fields; optimization and simplification also include optimization of the size of horizontal condensing heating furnaces, separation buffer tanks, and optimization of process piping layout in the device, which reduces the amount of prefabrication work, shortens construction time, speeds up the time to production, and saves construction investment; secondly, skid-mounting, based on the optimized and simplified process flow, combined with the size of the equipment, comprehensive consideration of prefabrication, transportation, construction and other factors, rationally composes skid-mounted units. Under the condition that a single freight truck cannot transport it, the equipment skid-mounted is prefabricated in the factory, split freight, and spliced ​​on site to meet the needs; finally, integration, on the basis of optimization, simplification and skid-mounting, some equipment with similar functions and relatively small size are integrated with valves and pipelines to achieve functional integration and reduce investment funds.

[0061] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. Any design that is the same or similar to the present invention belongs to the protection scope of the present invention. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry and are not described here one by one.

Claims

1. An integrated skid-mounted device, characterized in that: The invention comprises a plurality of heating separation skids (16) and an external transport metering skid (13), wherein the plurality of heating separation skids (16) are spliced ​​in sequence through flanges (26), wherein one of the heating separation skids (16) is spliced ​​with the external transport metering skid (13) through a flange interface; a tank body (17) is fixed to the heating separation skid (16) along its length direction, and a separation plate (25) is provided in the middle section of the inner cavity of the tank body (17), wherein the separation plate (25) divides the inner cavity of the tank body (17) into two chambers, namely a crude oil heating unit (18) and a separation buffer unit (19); the water-containing crude oil is heated by the crude oil heating unit (18) and then enters the separation buffer unit (19) for gas-liquid separation; the separated gas is discharged, and the liquid is transported to the external transport control unit (20) on the external transport metering skid (13) through a pipeline, and is metered and externally transported to a lower-level station after being pressurized by the external transport control unit (20); According to the actual liquid production of the oilfield development block, the spliced ​​heating separation skid (16) and the external transmission metering skid (13) replace the conventional transfer station. The conventional transfer station has two specifications: production capacity of 800m 3 / d conventional transfer station and production volume is 1000m 3 / d’s regular transfer station; When replacing 800m 3 / d conventional transfer station, select 2 production capacity of 400m 3 / d heating separation skid (16), two heating separation skids (16) and external metering skid (13) are spliced ​​into an integrated skid-mounted device through flanges (26); when replacing 1000m 3 / d conventional transfer station, select 1 with a production volume of 400m 3 / d heating separation skid (16) and 1 production capacity of 600m 3 / d heating and separation skids (16), two heating and separation skids (16) and an external metering skid (13) are spliced ​​together through flanges (26) to form an integrated skid-mounted device.

2. The integrated skid-mounted device according to claim 1, characterized in that: The crude oil heating unit (18) comprises a heating furnace (2) placed in the chamber of the tank body (17), a heat exchange coil (4), and a fully automatic burner (1) and a chimney (3) placed outside the tank body (17); The heating furnace (2) is horizontally placed in the chamber, the heating furnace (2) is connected to the fully automatic burner (1) and the chimney (3), and the fully automatic burner (1) and the chimney (3) are respectively fixedly connected to the outer wall of the tank body (17); The heat exchange coil (4) is coiled just above the heating furnace (2); the inlet end of the heat exchange coil (4) is connected to the crude oil pipeline outside the tank body (17); and the outlet end passes through the isolation plate (25) and extends into the chamber where the separation buffer unit (19) is located.

3. The integrated skid-mounted device according to claim 2, characterized in that: An expansion water tank (5) is installed on the top of the outer portion of the tank body (17), and the expansion water tank (5) is connected to the inner cavity of the tank body (17) and directly faces the heat exchange coil (4).

4. The integrated skid-mounted device according to claim 2, characterized in that: A manhole (6) is provided on the top of the outer side of the tank body (17), and the manhole (6) faces the chamber where the crude oil heating unit (18) is located.

5. The integrated skid-mounted device according to claim 2, characterized in that: The separation buffer unit (19) comprises an inlet flow divider (7) disposed in the chamber of the tank body (17), a defoaming component (8), a wave-breaking plate (9), a separation baffle (15), and a mist collector disposed outside the tank body (17); The inlet diverter (7) is connected to the outlet end of the heat exchange coil (4), the outlet of the inlet diverter (7) is directly opposite to the defoaming component (8) vertically fixed to the top inner wall of the tank body (17), the separation baffle (15) is obliquely placed directly below the outlet of the inlet diverter (7), the wave-breaking plate (9) is installed on the bottom inner wall of the tank body (17), the mist collector is installed directly above the wave-breaking plate (9), and a separation buffer liquid outlet (21) is opened at the bottom of the chamber of the tank body (17) where the separation buffer unit (19) is located.

6. The integrated skid-mounted device according to claim 5, characterized in that: The separation buffer liquid outlet (21) is connected to a vortex preventer (11), and the vortex preventer (11) is placed in the tank body (17).

7. The integrated skid-mounted device according to claim 5, characterized in that: There are two mist collectors, namely a labyrinth-type primary mist collector (14) and a labyrinth-type secondary mist collector (10). The labyrinth-type primary mist collector (14) penetrates inside and outside the tank body (17) and is installed on the top of the tank body (17). The labyrinth-type secondary mist collector (10) is connected to the labyrinth-type primary mist collector (14) and is placed on the top outside the tank body (17).

8. The integrated skid-mounted device according to claim 5, characterized in that: The external transmission control unit (20) comprises an interlocking control electric valve (22), an external transmission pump (23) and a frequency conversion controller (24); each separation buffer liquid outlet (21) on the heating separation skid (16) is connected to a drainage pipeline, and a plurality of drainage pipelines are merged into a main pipeline, which is connected to the inlet of the external transmission pump (23) through the interlocking control electric valve (22); and the outlet of the external transmission pump (23) is connected to the lower station through a pipeline; Two electronic liquid level gauges (12) are installed on the upper and lower outer walls of the tank body (17) where the separation buffer unit (19) is located. The electronic liquid level gauge (12) is interlocked with the interlock control electric valve (22). The electronic liquid level gauge (12) and the external transmission pump (23) are both connected to the frequency conversion controller (24).

9. A serialized splicing method of an integrated skid-mounted device according to any one of claims 1 to 8, characterized in that: The valve on the crude oil pipeline is opened, and the water-containing crude oil enters the heat exchange coil (4), and the chamber of the tank (17) where the crude oil heating unit (18) is located is filled with water. Then, the fully automatic burner (1) is turned on to heat the heating furnace (2). The heating furnace (2) transfers heat to the surrounding water, and at the same time, the high-temperature flue gas is discharged from the chimney (3). During the heating process of the water, the volume changes, and the expanded volume is absorbed by the expansion tank (5). The heating is continued for 15 to 30 minutes until the temperature of the heat exchange coil (4) is 30 to 35°C, and then enters the separation buffer unit (19). The heated water-containing crude oil passes through the inlet diverter (7) to the gas. The separated gas rises and enters the labyrinth type primary mist collector (14) for primary separation of the liquid, and then passes through the labyrinth type secondary mist collector (10) for secondary separation of the liquid. The treated gas is discharged from the exhaust port of the tank body (17). The separated liquid is defoamed by the defoaming component (8), the convection type is arranged by the separation baffle (15), and the liquid level is stabilized by the wave-breaking plate (9). When the electronic liquid level meter (12) reaches the set value, the interlock control electric valve (22) opens the separation buffer liquid outlet (21), and the water-containing crude oil enters the external transmission pump (23). The external transmission pump (23) is pressurized and then metered, and then transmitted to the lower station.

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