Movable three-phase separation equipment for oilfield produced liquid

Abstract

The utility model belongs to the technical field of petroleum and natural gas processing, and discloses a movable oil field produced liquid three-phase separation device which comprises a trailer head and a platform trailer, the platform trailer is connected with the trailer head, a container, an oil tank, a steel frame and a connecting system are sequentially arranged on the platform trailer from the trailer head to the trailer tail, and a three-phase separator is arranged in the steel frame. The connecting system comprises a skid chassis connected with the platform trailer and a plurality of throttle pipes arranged on the skid chassis vertically and horizontally, the throttle pipes are connected through flanges, and a plurality of throttle valves are arranged on pipelines between the flanges; the connecting system further comprises a pressure gauge and a sampling port which are arranged at one end close to the three-phase separator. A whole set of skid-mounted three-phase separation system is arranged on the trailer, and is matched with a process connecting system, a control system and other functional auxiliary systems, so that the operation flexibility is high, and a certain block of an oil field can be immediately in place when needing to be subjected to three-phase separation operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and natural gas processing technical field especially relates to a mobile oilfield produced liquid three -phase separation equipment. BACKGROUND

[0002] Oil gas water three -phase separator is one of the most commonly used equipment in the oilfield development process, usually is the first processing produced liquid equipment of oil well exploitation import. Its purpose is to separate oil gas water mixture into crude oil, natural gas and free water under certain operating conditions. Common oil gas water three -phase separation process has three kinds of one -time separation, continuous separation and multistage separation.

[0003] Oil gas water mixture high -speed enters three -phase separator, relies on the entrance separation device and the gravity separation of a large amount of crude oil associated gas. The liquid phase after preliminary separation passes through the baffle, reduces the turbulence degree of liquid phase, passes through the coalescence filler again and divides into oil water two layers, forms the oil water separation chamber. Because the density of water is greater than the density of oil, therefore the water layer is below, and the oil layer is above. Oil phase overflows to the oil chamber through the weir plate.

[0004] The form of three -phase separator can be divided into three kinds: horizontal, vertical and spherical. The gravity settling velocity of horizontal separator is perpendicular to the fluid flow velocity, and has larger cross section, and the separation efficiency is higher. Vertical separator is mainly used for oil well exploitation platform with small crude oil processing capacity and large sand content.

[0005] In general sense, oil well exploitation is a long -term and continuous process. But in some cases, such as for test well, short -term exploitation of oil well, or small oil well exploitation, the exploitation period is short, and even less than one year. Using the traditional fixed three -phase separator to separate oil gas water, will cause the idle of later -stage equipment, and the economy is not high. Meanwhile, the idle equipment also wastes the land resources. INVENTION CONTENTS

[0006] In order to solve the problem of idle of later -stage equipment caused by setting the traditional fixed three -phase separator in the short exploitation period in the prior art. The utility model provides a mobile oilfield produced liquid three -phase separation equipment, that is, the three -phase separation system of complete skid is placed on the trailer, is equipped with process connection system, control system and other functional auxiliary systems, realizes the mobility of skid equipment on the basis of realizing the conventional oilfield produced liquid three -phase separation function, realizes that one equipment separates oil gas water operation to multiple oil wells, improves the economy and equipment utilization efficiency.

[0007] The utility model discloses a trailer head and flatbed trailer are connected, and the flatbed trailer is provided with a container, an oil tank, a steel frame and a connecting system from the head to the tail, and the steel frame is internally provided with a three-phase separator.

[0008] As a further optimization, the three-phase separator comprises an oval shell, one end of the shell is connected with the pressure gauge on one side of the connecting system through a feed pipe, and the inside of the shell is divided into a gas-liquid separation zone, an oil-water separation chamber and an oil chamber from the connecting system to the far side; the gas-liquid separation zone is provided with an oil inlet at the top, the oil inlet is connected with the feed pipe, and a separation device is arranged at the inside of the shell close to the oil inlet; the gas-liquid separation zone and the oil-water separation chamber are separated by a baffle, and the top and bottom of the baffle are connected with the shell; the oil-water separation chamber is provided with coalescence filler in the middle; the oil-water separation chamber and the oil chamber are separated by a weir plate, the bottom of the weir plate is connected with the shell, and a gap is left between the top of the weir plate and the shell; the oil chamber is provided with a gas outlet at the top and an oil outlet at the bottom; the gas-liquid separation chamber, the oil-water separation chamber and the oil chamber are all provided with a flushing port and a blowdown port; and the bottom of the oil-water separation chamber is provided with a water outlet.

[0009] As a further optimization, the three-phase separator further comprises a pressure sensor arranged at the top of the oil-water separation chamber, the pressure sensor is connected with a pressure control valve arranged on a gas outlet pipe, and the gas outlet pipe is arranged at the gas outlet.

[0010] As a further optimization, the oil-water separation chamber in the inside of the shell is further provided with a first liquid level meter, and the oil chamber is further provided with a second liquid level meter; the first liquid level meter is connected with a first liquid level control valve, and the second liquid level meter is connected with a second liquid level control valve; the second liquid level control valve is arranged on an oil outlet pipe, the oil outlet pipe is connected with the oil outlet; the first liquid level control valve is arranged on a water outlet pipe, and the water outlet pipe is connected with the water outlet.

[0011] As a further optimization, the flatbed trailer is provided with walkways on the other three sides except the side connected with the trailer head, and the walkways are foldable.

[0012] As a further optimization, the water outlet is arranged between the coalescence filler and the weir plate.

[0013] As a further optimization, the water outlet and the oil outlet are both provided with vortex preventers.

[0014] As a further optimization, a demister can be arranged at the gas outlet.

[0015] As a further preferred, the flatbed trailer is provided with a storage box below.

[0016] As a further preferred, the connection system further comprises a bypass valve provided on the throttle pipe.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1. The utility model discloses a three-phase separation system of complete skid-mounted is arranged on the trailer, is equipped with process connection system, control system and other functional auxiliary system, and the operation flexibility is high, and when the certain block of oil field needs to carry out three-phase separation operation, can be immediately in position.

[0019] 2. The utility model discloses can realize that one device carries out oil gas water separation operation to multiple oil wells, avoids large-scale fixed asset investment, and the economy is superior.

[0020] 3. The utility model discloses a three-phase separation device, control system and process functional auxiliary system are inherited to one device, and one device is a small field station, and the function is complete.

[0021] 4. The utility model discloses three-phase separation equipment adopts redundancy design, and can adapt to the oil property and processing capacity requirement of each block in a certain range of oil extraction area. DETAILED DESCRIPTION

[0022] Figure 1 It is the overall structure schematic diagram of the utility model.

[0023] Figure 2 It is the top view of Figure 1 .

[0024] Figure 3 It is the container internal structure schematic diagram in Figure 1 .

[0025] Figure 4 It is the second trailer supporting plate structure schematic diagram of the utility model.

[0026] Figure 5 It is the connection system partial close-up view of the utility model.

[0027] Figure 6 It is the top view of Figure 5 .

[0028] Figure 7 It is the three-phase separator schematic diagram of the utility model.

[0029] Figure 8 It is the separation process schematic diagram of the utility model.

[0030] Indicated in the drawing:

[0031] 1. Trailer cab; 2. Flatbed trailer; 3. Container; 4. Fuel tank; 5. Steel frame; 6. Three-phase separator; 7. Connection system; 8. Walkway; 31. Laboratory instrument area; 32. Diesel generator; 33. Air compressor; 61. Oil inlet; 62. Housing; 63. Separation device; 64. Baffle; 65. Coalescing packing; 66. Weir plate; 67. Demister; 68. Water outlet; 69. Oil outlet; 610. Air outlet; 611. Anti-vortex device; 612. Flushing port; 61 3. Drain outlet; 614. Feed pipe; 615. Drain pipe; 616. Flushing pipe; 617. Pressure sensor; 618. Pressure control valve; 619. Air outlet pipe; 620. First level gauge; 621. Second level gauge; 622. Water outlet pipe; 623. First level control valve; 624. Second level control valve; 625. Oil outlet pipe; 71. Throttling valve; 72. Bypass valve; 73. Pressure gauge; 74. Sampling port; 75. Throttling pipe; 76. Flange; 77. Skid chassis. Detailed Implementation

[0032] The advantages and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

[0033] like Figure 1 As shown, this utility model provides a mobile three-phase separation device for produced fluid from oilfields, including a trailer head 1, a flatbed trailer 2, a container 3, a steel frame 5, a three-phase separator 6, and a connecting system 7. The trailer head 1 is connected to the flatbed trailer 2. The container 3, steel frame 5, and connecting system 7 are sequentially mounted on the flatbed trailer 2, with the container 3 positioned close to the trailer head 1. The connecting system 7 is positioned away from the trailer head 1 and is used to connect the three-phase separator 6 to the oil well. Produced fluid from the oil well is fed into the three-phase separator 6 after pressure and flow rate control by the connecting system 7. The three-phase separator 6 is housed within the steel frame 5 and fixed to the flatbed trailer 2 by the steel frame 5, which also protects the three-phase separator 6. A fuel tank 4, a diesel fuel tank, is also provided between the steel frame 5 and the container 3 to provide fuel for the power generation unit. The flatbed trailer 2 has a horizontal platform for mounting the container 3, fuel tank 4, steel frame 5, and connecting system 7.

[0034] The steel frame 5, used to fix the three-phase separator 6, is composed of steel beams, steel columns, and steel trusses made of structural steel and steel plates. These components can be connected by welding, bolts, and rivets. To prevent rust and corrosion, the steel frame 5 can be treated with rust removal, galvanizing, and painting. The steel frame 5 is also equipped with a lighting system for easy observation of the three-phase separator 6's operation at night. In addition to the steel columns connecting the top and bottom of the steel structure at the four corners, two additional equidistant steel columns are required on both sides for support.

[0035] As Figure 2 shown, the flat trailer 2 is provided with walkways 8 on the other three sides except the side connected with the trailer head 1, and the walkways 8 can be folded, and the unfolded walkway 8 is shown in Fig. Figure 2 The walkways 8 are used to provide a passage for the staff to operate the equipment on the moving platform.

[0036] As Figure 3 shown, it is a schematic diagram of the internal structure of the container 3 in the utility model. The container 3 is used to provide a testing site for the staff, accommodate related instruments and meters, and install a monitoring system. The lamps and panels in the container 3 should be treated for explosion prevention, and the walls should be treated for heat preservation. The container 3 can be integrated on the flat trailer 2, or a separate container 3 trailer can be used to provide a larger working space for the staff and place some large testing instruments, etc. In addition, since the container is independent of the related equipment for oil-gas-water separation, the safety is higher. The container 3 is internally provided with an experimental instrument area 31, a diesel generator 32 and an air compressor 33. The three-phase separator 6 separates out the gas phase, the water phase and the oil phase. The power in the operation process is provided by the diesel generator 32. The power generated by the diesel generator 32 is first passed through a distribution board and then distributed to each device. The instrument air required by the instruments and valves in the process is generated by the air compressor 33. The oil, gas and water collected are periodically or irregularly sampled and analyzed to determine whether the separation effect is qualified. The selection form of the container 3 is selected according to specific needs. The pressure, temperature, flow and other data are transmitted to the recorder by sensors and displayed in real time. When not in use, the diesel generator 32 and the air compressor 33 are placed in the container 3; when in use, they are moved to the flat trailer 2 or the walkway 8, etc. or placed outside the flat trailer 2. In addition, the container 3 should be equipped with related test instruments placed in the internal experimental instrument area 31.

[0037] The experimental instrument area 31 should at least include the following parts: 1. a density meter, used to measure the specific gravity of natural gas and calculate the gas composition, and also used to measure the density of the separated crude oil; 2. a DCS or PLC control system, used to detect the changes of pressure and flow in real time; the signals transmitted by other instruments are connected through the control system; 3. a flow meter; 4. a pressure gauge; 5. a salt content analyzer and a water content analyzer, used to measure the salt and water content of the separated crude oil; 6. a PH meter (or PH test paper), used to measure the acidity of the crude oil.

[0038] As Figure 4 shown, it is another structure of the flat trailer 2 in the utility model, i.e. "Z" type. The specific form to be selected should be confirmed according to the requirements of the process equipment and auxiliary equipment. The three-phase separator 6 is fixed in the steel frame 5 and on the flat trailer 2.

[0039] As Figure 5and Figure 6 As shown, the connection system 7 includes choke valves 71, bypass valves 72, pressure gauges 73, sampling ports 74, choke lines 75, flanges 76, and skid plates 77, which are used to control the flow and pressure of the oil from the oil well, so as to control the production and minimize the damage to the equipment. The connection system 7 is provided with the choke lines 75 arranged in a crisscross manner on the skid plates 77, and the choke lines 75 are connected by the flanges 76. The choke valves 71 are arranged on the pipelines between the flanges 76. In order to avoid the damage caused by the excessive pressure in the choke lines 75, the bypass valves 72 can also be arranged at the corresponding positions. The bypass valves 72 are used to bypass the choke valves 71 in the case of emergency, such as blockage or overpressure, so that the oil produced from the oil well can directly enter the next process unit. The pressure gauges 73 and the sampling ports 74 are arranged at the end of the connection system 7 connected with the three-phase separator 6. The skid plates 77 are connected with the flatbed trailer 2. The flanges 76 are used to connect the choke lines 75. Usually, a plurality of choke valves 71 are arranged; these choke valves 71 are redundantly designed, so that when one of the choke valves 71 fails or needs to be repaired, the oil produced from the oil well can continue to be operated through the other choke valves 71, without the need to suspend the operation of the device. The pressure gauges 73 and the sampling ports 74 are arranged on the choke lines 75, so as to help the workers to better determine the working conditions and improve the safety. Through the throttling effect of the choke valves 71, the bottom hole pressure is maintained to be not less than the wellhead pressure, so as to prevent overflow.

[0040] The flatbed trailer 2 belongs to a support module, which is used to carry the working module and the separation module. The working module includes the container 3 and the experimental instrument area 31 inside the container 3. The separation module includes the air compressor 33 and the three-phase separator 6, wherein the three-phase separator 6 is fixed by the steel frame 5. The diesel generator 32 and the oil tank 4 belong to a power module, which is used to supply power to the equipment and instruments in the separation module and the working module. The power module is also carried by the support module. The trailer head 1 is a mobile power module. The support module carries the working module, the separation module, and the power module, and constitutes the core of the mobile oilfield produced liquid three-phase separation device.

[0041] As Figure 7As shown, it is the internal structure diagram of the three-phase separator 6 designed by the utility model. The three-phase separator 6 includes an oval shell 62. The shell 62 is connected with one side of the pressure gauge 73 of the connecting system 7 through a pipeline at one end. The inside of the shell 62 is sequentially divided into a gas-liquid separation zone, an oil-water separation chamber and an oil chamber from close to the connecting system 7 to far away from the connecting system 7. The gas-liquid separation zone is provided with an oil inlet 61 at the top, and the oil inlet 61 is connected with the connecting system 7 through a pipeline. The inside of the shell 62 is provided with a separation device 63 close to the oil inlet 61, and the separation device 63 carries out preliminary gas-liquid separation on the oilfield produced liquid. The gas-liquid separation zone and the oil-water separation chamber are separated by a baffle 64, and the top and bottom of the baffle 64 are connected with the shell 62. The baffle 64 is used to reduce the flow rate and turbulence degree of the liquid phase after preliminary gas-liquid separation, and preliminarily separates oil and water. The oil-water separation chamber is provided with coalescence packing 65 in the middle, and the coalescence packing 65 is generally in the form of wire mesh or blade. The coalescence packing 65 is used to completely separate the oil-water mixture into oil phase and water phase. The top and bottom of the coalescence packing 65 are also connected with the shell 62. The oil-water separation chamber and the oil chamber are separated by a weir plate 66, the bottom of the weir plate 66 is connected with the shell 62, and the top leaves a gap with the shell 62. The oil chamber is provided with a gas outlet 610 at the top and an oil outlet 69 at the bottom. The bottom of the gas-liquid separation chamber, the oil-water separation chamber and the oil chamber is provided with a flushing port 612 and a blowdown port 613. The bottom of the oil-water separation chamber is provided with a water outlet 68, and the water outlet 68 is arranged between the coalescence packing 65 and the weir plate 66. The water outlet 68 and the oil outlet 69 are both provided with vortex preventers 611, which are used to prevent the liquid from forming vortex in the pipeline, reduce the pressure loss and energy loss in the pipeline system. A demister 67 can be arranged at the gas outlet 610, which is used to remove liquid droplets in the gas to ensure the purity of the gas.

[0042] The oil from the oil well enters the three-phase separator 6 through the connecting system 7. The oil from the oil well enters the oil inlet 61, and the preliminary gas-liquid separation is carried out on the separation device 63. The liquid phase after preliminary gas-liquid separation passes through the baffle 64 to reduce the flow rate and turbulence degree, and preliminarily separates oil and water. Then, the liquid phase flows through the coalescence packing 65 to separate into obvious oil and water two phases. Because the density of oil is less than that of water, the oil phase is in the upper layer, and the water phase is in the lower layer. In addition to separating oil and water, the baffle 64 and the coalescence packing 65 also condense the small liquid droplets in the gas phase into large liquid droplets, and further purify the gas phase. The separated oil and water two phases, the oil phase flows out through the top of the weir plate 66 into the oil chamber, and then flows out through the oil outlet 69; and the water phase directly flows out through the water outlet 68 at the bottom of the oil and water two phase chamber formed between the coalescence packing 65 and the weir plate 66. The gas phase purified by the coalescence packing 65 is discharged from the shell 62 through the gas outlet 610. The flushing port 612 is used to provide flushing water for the bottom of the inside of the shell 62, fluidize the solid impurities into slurry, and flow out through the blowdown port 613, so as to achieve the purpose of cleaning the solid particles in the shell 62.

[0043] As Figure 8 shown, the three-phase separator 6 also includes a pressure sensor 617 disposed at the top of the oil-water separation chamber, which is connected with a pressure control valve 618 disposed on the gas outlet pipe 619, which is disposed at the gas outlet 610. Changes in the pressure inside the three-phase separator 6 cause changes in the opening of the pressure control valve 618, thereby changing the discharge flow of the gas phase to control the pressure inside the three-phase separator 6 to remain at a relatively constant value. The three-phase separator 6 also includes a feed pipe 614, which is connected to the oil inlet 61 and the connection system 7 at both ends. The oil-water separation chamber inside the housing 62 is also provided with a first liquid level meter 620, and the oil chamber is also provided with a second liquid level meter 621. The first liquid level meter 620 is connected with the first liquid level control valve 623, and the second liquid level meter 621 is connected with the second liquid level control valve 624. The second liquid level control valve 624 is disposed on the oil outlet pipe 625, which is connected with the oil outlet 69. The first liquid level control valve 623 is disposed on the water outlet pipe 622, which is connected with the water outlet 68. The flushing pipe 616 is connected to the flushing port 612, and the blowdown pipe 615 is connected to the blowdown port 613.

[0044] Changes in the liquid level in the oil-water separation chamber and the oil chamber will cause changes in the opening of the liquid level control valve, thereby changing the flow of water and oil to control the liquid level in the oil-water separation chamber and the oil chamber in the three-phase separator 6 to remain at a relatively constant position. The flushing water from the flushing pipe 616 can clean the solid impurities at the bottom of the housing 62; the solid impurities are discharged from the three-phase separator 6 by the blowdown pipe 615. In addition, the flow meter and pressure gauge of the device designed by the present application are all attached with sensors; the sensors transmit the corresponding signals to the recorder to display the change trend of the flow and pressure in real time, helping the staff to better adjust the equipment to make the entire device run under the best process conditions. In addition, the valves on the three-phase separator 6 are interlocked with the control cabinet, and the staff can remotely adjust the valve opening through the control cabinet. By realizing the intelligentization (automatic adjustment of the valve) and digitization (visualization of pressure and flow data) of the device, not only the flexibility of the equipment is improved, but also the safety is improved.

[0045] Preferably, the flat trailer 2 is equipped with a storage box below to store stairs, spare parts, etc. The flat trailer 2 is provided with a detachable pedestrian passage, i.e. walkway 8, on the other three sides except the side connected with the trailer head 1, wherein the handrails with supports are installed on the walkway 8 on both sides along the direction of the trailer travel. The diesel generator 32 is equipped with a radiator, a battery pack, a soundproof shell, a plastic shell type circuit breaker and an automatic shutdown program. The power generated by the diesel generator 32 is first transmitted to the distribution board, and then distributed to other systems by the distribution board. The distribution board is explosion-proof. The air compressor 33 is used to provide instrument air for pneumatic valves; it can also provide cleaning medium for the oil tank 4. A silencer is installed at the air inlet and outlet of the air compressor 33, and a soundproof cover is installed on the unit to reduce the noise generated by the air compressor 33 during operation. The control cabinet can use a PLC or DCS control system. Since flammable gas (natural gas) is involved in the entire operation process, the equipment that may cause combustion explosion, such as the diesel generator 32 and the air compressor 33, needs to be explosion-proof treated.

[0046] In addition to the above embodiments, the utility model can also have other implementation manners, and any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the utility model.

Claims

1. A mobile three-phase separation device for produced oilfield fluids, characterized in that: The system includes a trailer head (1) and a flatbed trailer (2). The flatbed trailer (2) is connected to the trailer head (1). The flatbed trailer (2) is equipped with a container (3), a fuel tank (4), a steel frame (5), and a connection system (7) in sequence from the front to the rear. The steel frame (5) is equipped with a three-phase separator (6). The connection system (7) includes a skid chassis (77) connected to the flatbed trailer (2) and several throttling pipes (75) arranged longitudinally and transversely on the skid chassis (77). The throttling pipes (75) are connected by flanges (76). Several throttling valves (71) are installed on the pipeline between the flanges (76). The connection system (7) also includes a pressure gauge (73) and a sampling port (74) located near the end of the three-phase separator (6).

2. The mobile three-phase separation equipment for produced oilfield fluid according to claim 1, characterized in that: The three-phase separator (6) includes an elliptical shell (62). One end of the shell (62) is connected to the pressure gauge (73) side of the connection system (7) via a feed pipe (614). The interior of the shell (62) is divided into a gas-liquid separation zone, an oil-water separation chamber, and an oil chamber from the side closer to the connection system (7) to the side farther away from the connection system (7). An oil inlet (61) is provided at the top of the gas-liquid separation zone and is connected to the feed pipe (614). A separation device (63) is provided inside the shell (62) near the oil inlet (61). The gas-liquid separation zone and the oil-water separation chamber are separated by a baffle. (64) Separated, the top and bottom of the baffle (64) are connected to the shell (62); coalescing packing (65) is provided in the middle of the oil-water separation chamber; the oil-water separation chamber and the oil chamber are separated by a weir plate (66), the bottom of the weir plate (66) is connected to the shell (62), and the top of the weir plate (66) is separated from the shell (62); the top of the oil chamber is provided with an air outlet (610), and the bottom is provided with an oil outlet (69); the gas-liquid separation zone, the oil-water separation chamber and the bottom of the oil chamber are all provided with a flushing port (612) and a drain port (613); the bottom of the oil-water separation chamber is provided with a water outlet (68).

3. The mobile oilfield produced fluid three-phase separation equipment according to claim 2, characterized in that: The three-phase separator (6) also includes a pressure sensor (617) installed at the top of the oil-water separation chamber. The pressure sensor (617) is connected to a pressure control valve (618) installed on the vent pipe (619). The vent pipe (619) is installed at the vent port (610).

4. The mobile oilfield produced fluid three-phase separation equipment according to claim 3, characterized in that: The oil-water separation chamber inside the housing (62) is also equipped with a first level gauge (620), and the oil chamber is also equipped with a second level gauge (621); the first level gauge (620) is connected to the first level control valve (623), and the second level gauge (621) is connected to the second level control valve (624); the second level control valve (624) is installed on the oil outlet pipe (625), and the oil outlet pipe (625) is connected to the oil outlet (69); the first level control valve (623) is installed on the water outlet pipe (622), and the water outlet pipe (622) is connected to the water outlet (68).

5. The mobile oilfield produced fluid three-phase separation equipment according to claim 4, characterized in that: The flatbed trailer (2) has walkways (8) on its three sides, except for the side connected to the trailer head (1). The walkways (8) are foldable.

6. The mobile oilfield produced fluid three-phase separation equipment according to claim 4, characterized in that: The outlet (68) is located between the coalescing packing (65) and the weir plate (66).

7. The mobile oilfield produced fluid three-phase separation equipment according to claim 4, characterized in that: Anti-vortex devices (611) are installed at both the water outlet (68) and the oil outlet (69).

8. The mobile oilfield produced fluid three-phase separation equipment according to claim 4, characterized in that: A demister (67) can be installed at the air outlet (610).

9. The mobile oilfield produced fluid three-phase separation equipment according to claim 4, characterized in that: A storage box is provided under the flatbed trailer (2).

10. The mobile oilfield produced fluid three-phase separation equipment according to claim 4, characterized in that: The connection system (7) also includes a bypass valve (72) disposed on the throttle pipe (75).

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