Slug flow separator

Abstract

The utility model is suitable for the field of oil field equipment, and provides a slug flow separator which comprises a vertical degassing tower and a horizontal dehydration tank, the vertical degassing tower is used for carrying out gas-liquid separation treatment on the slug flow to obtain an oil-water mixture and gas, discharging the gas through a gas phase discharge port and discharging the oil-water mixture through a liquid discharge communication port; the horizontal dehydration tank is used for separating the oil-water mixture to obtain oil-phase liquid and water-phase liquid, discharging the oil-phase liquid through an oil outlet and discharging the water-phase liquid through a water outlet; the vertical degassing tower is connected with the horizontal dehydration tank through the liquid discharge communication port and the liquid inlet communication port of the horizontal dehydration tank, and the liquid inlet communication port is formed in one side of the tank body and the top of the tank body. According to the slug flow separator provided by the utility model, the separation efficiency can be effectively improved, and the enterprise cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil field equipment, and in particular relates to a slug flow separator. Background Art

[0002] At present, after being collected from oil and gas fields by professional equipment, the collected oil well output fluid needs to be transported to the processing plant for further processing. The oil well output fluid is a mixture of oil, water and gas, such as a mixture of crude oil, water, natural gas, and some solid impurities. In the process of transporting the output fluid, as the pressure decreases, the amount of gas escaping in the output fluid increases, and the escaped bubbles expand and gather to form cannonball-shaped bubbles close to the inner diameter of the conveying pipe, thereby dividing the output fluid into slugs. The fluid in this situation is called slug flow. When slug flow occurs in the conveying pipeline, the pipeline pressure and the instantaneous flow rate of gas and liquid at the pipeline outlet will fluctuate greatly, accompanied by strong vibrations, which will cause great damage to the conveying pipeline and the equipment connected to the conveying pipeline.

[0003] In order to prevent the long-distance gathering and cleaning operations of oil and gas fields from generating large slug flows that affect the receiving and processing devices at the end of the pipeline, a slug flow separator is usually installed at the end of the gathering and transportation pipeline to handle the overflow of the cleaning slug and stabilize the liquid phase flow. The slug flow catcher can not only separate oil and gas, but also stabilize the liquid phase flow to the downstream processing facilities, and also has the function of storing a certain amount of liquid. However, conventional slug flow catchers have problems such as unqualified separation efficiency, uneconomical equipment selection, and liquid level control that cannot meet operational requirements. In other words, conventional slug flow catchers are not well suited for gathering and transportation pipelines that transport oil well output fluids. Utility Model Content

[0004] In order to solve the above problems existing in the related art, the utility model provides a slug flow separator. The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] The utility model provides a slug flow separator, comprising: a vertical degassing tower and a horizontal dehydration tank; wherein the vertical degassing tower is used to perform gas-liquid separation treatment on the slug flow to obtain an oil-water mixture and gas, and the gas is discharged through the gas phase discharge port of the vertical degassing tower, and the oil-water mixture is discharged through the liquid discharge connection port of the vertical degassing tower; the gas phase discharge port is arranged above the tower body of the vertical degassing tower, and the liquid discharge connection port is respectively arranged in the middle and lower parts of the tower body; the horizontal dehydration tank is used to separate the oil-water mixture Separation is performed to obtain oil phase liquid and water phase liquid, the oil phase liquid is discharged through the oil outlet of the horizontal dehydration tank, and the water phase liquid is discharged through the water outlet of the horizontal dehydration tank; the oil outlet and the water outlet are symmetrically arranged along the axis of the tank body of the horizontal dehydration tank, and the oil outlet is arranged on the top of the tank body; the vertical degassing tower is connected to the horizontal dehydration tank through the drainage connecting port and the liquid inlet connecting port of the horizontal dehydration tank, wherein the liquid inlet connecting port is arranged on one side of the tank body and the top of the tank body.

[0006] In some embodiments, the liquid level gauge is arranged at the middle of the outer wall of the tower body along the axis of the tower body, and the liquid level gauge is used to detect the liquid level of the slug flow in real time; a demisting filler is arranged at the upper part of the tower body; the demisting filler is used to remove impurities and moisture in the gas, and the demisting filler is located above the liquid level gauge; along the axis of the tower body, an upper inspection manhole and a lower inspection manhole for maintenance and exploration are arranged at intervals on the tower body; a total feed port is also arranged in the middle of the tower body; a mud and sand discharge port for sewage discharge is arranged at the bottom of the tower body, and an overpressure relief port for pressure relief is arranged at the top of the tower body.

[0007] In some embodiments, the height of the demisting packing is 1.2 to 1.5 times the inner diameter of the tower body.

[0008] In some embodiments, the liquid drainage connection port is provided between the liquid level meter and the demisting filler and on one side of the lower inspection manhole, and the gas phase discharge port is provided on one side of the upper inspection manhole.

[0009] In some embodiments, the cross-sectional area of ​​the pipe of the gas phase discharge port is one quarter to one half of the cross-sectional area of ​​the pipe of the liquid discharge connection port.

[0010] In some embodiments, a coalescing filler for separating the oil-water mixture is provided in the middle section of the tank body; a front inspection manhole and a rear inspection manhole for maintenance and exploration are provided at intervals on the tank body along the axis of the tank body; a sludge discharge port for sewage discharge is provided at the bottom of the tank body, and the sludge discharge port is below the front inspection manhole; a pressure sensor is also provided on the top of the tank body, and the pressure sensor is used to monitor the blockage degree of the coalescing filler, and the pressure sensors are respectively provided on both sides of the coalescing filler.

[0011] In some embodiments, the length of the coalescing packing is 4 to 8 times the inner diameter of the tank.

[0012] In some embodiments, the oil outlet is installed with an oil outlet valve, and the water outlet is installed with a water outlet valve.

[0013] In some embodiments, an oil-water interface meter is further provided on the top of the tank body, and the oil-water interface meter is used to control the opening and closing of the oil outlet valve and the water outlet valve.

[0014] The utility model has the following beneficial technical effects:

[0015] In view of the fact that conventional slug flow collectors are not well suited for gathering and transportation pipelines for transporting oil well production fluids, the utility model proposes a slug flow separator, including a vertical degassing tower and a horizontal dehydration tank. By allowing the slug flow to flow through the vertical degassing tower and the horizontal dehydration tank in sequence, the slug flow is separated into three-phase fluids of oil, water and gas, and each phase of fluid is transported through different outlets for further processing; wherein, the vertical degassing tower can provide sufficient degassing space to avoid the problems of small gas phase space, insufficient degassing, and foam emulsion overflow in conventional horizontal slug flow collectors, and the use of a horizontal dehydration tank to separate the oil-water mixture transported by the vertical degassing tower can avoid mutual interference between gas and liquid phases, and the oil-water interface obtained by separation is clear, and the purity of the oil phase liquid is high. Through the mutual cooperation of the vertical degassing tower and the horizontal dehydration tank, the separation efficiency can be effectively improved and the enterprise cost can be saved.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic structural diagram of a slug flow splitter provided by the utility model.

[0018] Description of Figure Numbers:

[0019] Icons: 1-vertical degassing tower; 2-horizontal dehydration tank; 11-level gauge; 12-demist filler; 13-upper inspection manhole; 14-lower inspection manhole; 15-maintenance feed port; 16-mud and sand drain port; 17-liquid drainage connection port; 18-gas phase discharge port; 19-overpressure relief port; 21-agglomeration filler; 22-front inspection manhole; 23-rear inspection manhole; 24-liquid inlet connection port; 25-oil outlet; 26-water outlet; 27-sludge drain port; 28-pressure sensor; 29-oil-water interface meter. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.

[0021] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0023] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art may understand and implement other changes to the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0024] Conventional slug flow catchers adopt a horizontal design. This design has the problems of narrow gas phase space, insufficient degassing, and foam emulsion overflow. In order to ensure sufficient gas phase diffusion space as much as possible, conventional slug flow catchers only allow the liquid level to be centered and half-tank operation. However, the half-tank operation method is not economical and reasonable, and the deposition of solid phases such as scaling (i.e., solid impurities) often causes the slug flow catcher to be blocked or even unable to continue working. In addition, when performing multi-phase separation in a tank, the phases will interfere with each other, resulting in low separation efficiency. Conventional slug flow catchers are not well suited for gathering and transportation pipelines that transport oil well output fluids.

[0025] In view of the above problems, the utility model proposes a slug flow separator, which can effectively solve the problem that conventional slug flow catchers are not well applicable to gathering and transportation pipelines for transporting oil well produced fluid. Figure 1 This is a schematic diagram of the structure of the slug flow splitter provided by the utility model. Figure 1 The structure and working principle of the slug flow separator provided by the utility model are described in detail.

[0026] like Figure 1 As shown, the slug flow separator provided by the utility model comprises: a vertical degassing tower 1 and a horizontal dehydration tank 2; wherein the vertical degassing tower 1 is used to perform gas-liquid separation treatment on the slug flow to obtain an oil-water mixture and gas, discharge the gas through a gas phase discharge port 18 of the vertical degassing tower 1, and discharge the oil-water mixture through a liquid discharge connection port 17 of the vertical degassing tower 1; the gas phase discharge port 18 is arranged above the tower body of the vertical degassing tower 1, and the liquid discharge connection port 17 is respectively arranged in the middle and lower parts of the tower body; the horizontal dehydration tank 2 is used to separate the oil-water mixture The degassing tower 1 is connected to the horizontal dehydration tank 2 through a drain connection port 17 and a liquid inlet connection port 24 of the horizontal dehydration tank 2, wherein the liquid inlet connection port 24 is disposed on one side of the tank body and on the top of the tank body.

[0027] During use, the slug flow flows through the vertical degassing tower 1 and the horizontal dehydration tank 2 in sequence. In the vertical degassing tower 1, the slug flow is subjected to gas-liquid separation treatment to obtain an oil-water mixture and gas. The gas is discharged through the gas phase discharge port 18, and the discharged gas is transported separately. During the gas-liquid separation treatment, the vertical degassing tower 1 can provide sufficient degassing space to avoid the problems of small degassing space, insufficient degassing, and foam emulsion overflow in the conventional horizontal slug flow collector. The oil-water mixture enters the horizontal dehydration tank 2 through the drainage connection port 17 to perform oil-water separation treatment. Using the principle that the density of oil is greater than the density of water, an oil outlet 25 and a water outlet 26 are provided at the top and bottom of the horizontal dehydration tank 2, and the oil phase liquid is transported through the oil outlet 25, and the water phase liquid is transported through the water outlet 26. When performing the oil-water separation process, the oil-water mixture flows in from the leftmost end of the horizontal dehydration tank 2, and then flows out from the oil outlet 25 and the water outlet 26 at the rightmost end, respectively. The distance from the leftmost end to the rightmost end of the horizontal dehydration tank 2 is long, so that the oil-water mixture can be subjected to liquid phase coalescence separation for a long time without gas phase interference in the horizontal dehydration tank 2. This oil-water separation process can separate and obtain a high-purity liquid.

[0028] Here, the material, compressive strength, and temperature of the vertical degassing tower 1 and the horizontal dehydration tank 2 are designed according to the specific use environment and customer requirements, and meet the design standards. In actual assembly, the vertical degassing tower 1, the horizontal dehydration tank 2, and the skid-mounted base can be assembled by using a crane. The vertical degassing tower 1 and the horizontal dehydration tank 2 are arranged front and back at the same height. Specifically, the horizontal dehydration tank 2 is arranged on the skid-mounted base (also called a saddle), and the bottom of the skid-mounted base is on the same horizontal line as the bottom of the vertical degassing tower 1. In addition, the saddle at the bottom of the horizontal dehydration tank 2 can move freely along the axial direction of the horizontal dehydration tank 2. This arrangement can facilitate the release of cold and hot deformation stress and avoid strain on the flange root.

[0029] The specific structure of the vertical degassing tower 1 is now described.

[0030] In addition to the liquid discharge connection port 17 and the gas phase discharge port 18, the vertical degassing tower is provided with a liquid level gauge 11 in the middle of the outer wall of the tower body along the axis of the tower body, and the liquid level gauge 11 is used to detect the liquid level of the slug flow in real time; a demisting filler 12 is provided in the upper part of the tower body; the demisting filler 12 is used to remove impurities and moisture in the gas, and the demisting filler 12 is located above the liquid level gauge 11; along the axis of the tower body, an upper inspection manhole 13 and a lower inspection manhole 14 for maintenance and exploration are provided at intervals on the tower body; a total feed port 15 is also provided in the middle of the tower body; a mud and sand discharge port 16 for sewage discharge is provided at the bottom of the tower body, and an overpressure relief port 19 for pressure relief is provided at the top of the tower body.

[0031] Here, the level gauge 11 is fixedly installed on the outer wall of the tower body using a flange. The level gauge 11 is a remote transmission instrument device that is anti-fouling and flushable, and can specifically be a magnetic float level gauge. The installation of the level gauge 11 and the strong and weak electrical equipment associated with the level gauge 11 all meet the explosion-proof requirements. When in use, the level gauge 11 can monitor the liquid level of the slug flow inside the tower body outside the tower body, and convert the specific liquid surface position into an electrical signal and send it to the upstream computer for analysis. The material of the demisting filler 12 arranged inside the tower body has the characteristics of resistance to hydrogen sulfide corrosion, oil and gas swelling, and resistance to airflow blowing, and the height of the demisting filler 12 is 1.2 to 1.5 times the inner diameter of the tower body. Before being put into actual use, the demisting filler 12 is pre-installed in the processing plant. Specifically, after the inside of the tower body is thoroughly cleaned, the demisting filler 12 is installed. There is no gap between the demisting filler 12 and the inner wall of the tower body to short-circuit the process. The bottom support grate of the demisting filler 12 is welded firmly, and the top pressure grate is fastened with anti-drop bolts. The interface of the demisting filler 12 is set in a form that facilitates the falling of condensed droplets. In addition, an upper inspection manhole 13 and a lower inspection manhole 14 are set to facilitate the inspection and replacement of fillers and manual cleaning of scaling solid phase deposits during the shutdown period. In actual operation, the upper inspection manhole 13 and the lower inspection manhole 14 can be opened and closed by rotating left and right, which avoids the risk of maintenance personnel falling. After the installation is completed, the tower body is subjected to pressure resistance test and non-destructive testing to make it comply with relevant regulations and exit standards.

[0032] Here, the main feed port 15 and the drainage connection port 17 are respectively arranged on both sides of the tower body. The slug flow enters the tower body through the main feed port 15. The solid phase in the slug flow gradually settles at the bottom of the tower body and is manually discharged through the mud and sand drain port 16 arranged at the bottom. During the discharge, on-site observation is performed through a glass sight glass to avoid incorrect oil discharge. If manual discharge is impossible and causes blockage, the mud and sand drain port 16 can be connected to high-pressure flushing water, and the high-pressure water is used to flush it open for a short time, and then the sewage is discharged normally, and the discharged solid phase is output through the main drain pipe. The gas in the slug flow is filtered and dried by the demisting filler 21, and then automatically discharged through the gas phase discharge port 18. In order to avoid the problem of excessive pressure in the three-dimensional exhaust tower 1 due to the untimely discharge of gas in the slug flow, an overpressure relief port 19 is provided at the top of the tower body. A safety valve is installed on the overpressure relief port 19. When the pressure value in the tower body is 1.05 times the maximum allowable operating pressure, the safety valve opens, the overpressure relief port 19 releases the pressure in time, and the released gas is transported to the venting flare in the destation area for combustion treatment.

[0033] Here, the specific locations of the drainage connection port 17 and the gas phase discharge port 18 are: the drainage connection port 17 is respectively provided between the liquid level gauge 11 and the demisting filler 12, and on one side of the lower inspection manhole 14, and the gas phase discharge port 18 is provided on one side of the upper inspection manhole 13. Among them, the drainage connection port 17 provided between the liquid level gauge 11 and the demisting filler 12 is a sub-pipe on the liquid surface, and the drainage connection port 17 provided on one side of the lower inspection manhole 14 is a main pipe below the liquid surface. Through the sub-pipe on the liquid surface, the oil-water mixture exceeding the preset liquid level can be discharged in time to avoid the slug flow from soaking the demisting filler 12, and the oil-water mixture can be transported to the horizontal dehydration tank through the main pipe below the liquid surface. Here, in order to maintain the balance of the inlet and exhaust pressures in the tower body, the pipe cross-sectional area of ​​the gas phase discharge port 18 is one-fourth to one-half of the pipe cross-sectional area of ​​the drainage connection port 17.

[0034] Here, the strong and weak current equipment on the vertical degassing tower 1 and the associated strong and weak current equipment are assembled on site, and all the strong and weak current equipment meet the explosion-proof requirements.

[0035] The structure of the horizontal dehydration tank 2 will now be described in detail.

[0036] In addition to the liquid inlet connection port 24, the oil outlet 25 and the water outlet 26, the horizontal dehydration tank is provided with a coalescing filler 21 for separating the oil-water mixture in the middle section of the tank body; along the axis of the tank body, a front inspection manhole 22 and a rear inspection manhole 23 for maintenance and exploration are arranged at intervals on the tank body; a sludge discharge port 27 for sewage discharge is arranged at the bottom of the tank body, and the sludge discharge port 27 is below the front inspection manhole 22; a pressure sensor 28 is also arranged on the top of the tank body, and the pressure sensor 28 is used to monitor the blockage degree of the coalescing filler 21, and the pressure sensors 28 are respectively arranged on both sides of the coalescing filler 21.

[0037] Here, the drain connection port 17 of the vertical degassing tower 1 is connected to the inlet connection port 24 of the horizontal dehydration tank 2. Specifically, the pipe connecting the drain connection port 17 and the inlet connection port 24 is arranged horizontally and stabilized by a bracket. The oil-water mixture flows out from the drain connection port 17 and enters the horizontal dehydration tank 2 through the inlet connection port 24, so that the tank body is fully loaded. Compared with the conventional horizontal slug flow collector, this method can increase the separation efficiency by more than one time. In addition, the coalescing filler 21 used to separate the oil-water mixture can be pre-installed in the processing plant. Specifically, after the tank body is thoroughly cleaned, the coalescing filler 21 is limited front and rear and fastened with bolts. There is no gap between the coalescing filler 21 and the inner wall of the tank body to short-circuit the process. Here, the length of the coalescing filler 21 is 4 to 8 times the inner diameter of the tank body.

[0038] The oil-water mixture is in full contact with the coalescing filler 21, and the mixed solid phase in the oil-water mixture is precipitated and discharged through the sludge drain port 27 at the bottom of the tank body. The sludge drain port 27 can be connected to high-pressure flushing water to flush the solid phase that is difficult to remove to avoid blockage. The discharged solid phase is output through the main sewage pipe; in order to monitor the blockage degree of the coalescing filler 21, pressure sensors 28 are respectively arranged on both sides of the coalescing filler 21, specifically one is arranged between the front inspection manhole 22 and the coalescing filler 21, and the other is arranged between the coalescing filler 21 and the rear inspection manhole 23; the installation of the pressure sensor 28 and the strong and weak electrical equipment associated with the pressure sensor 28 meets the explosion-proof requirements; here, the oil outlet 25 is equipped with an oil outlet valve, the water outlet 26 is equipped with a water outlet valve, and an oil-water interface meter 29 is also arranged on the top of the tank body. The oil-water interface meter 29 is used to control the opening and closing of the oil outlet valve and the water outlet valve. Specifically, under normal circumstances, the oil outlet valve and the water outlet valve are normally closed. The oil-water interface meter 29 detects the liquid level of the oil phase liquid and the water phase liquid, and converts the detected height into an electrical signal. After the detected height exceeds the preset height, the oil-water interface meter 29 first sends an electrical signal to the oil outlet valve on the oil outlet 25 to control the oil outlet valve to open, and then sends an electrical signal to the water outlet valve to control the water outlet valve to open. The oil-water interface meter 29 is used to control the opening and closing of the oil outlet valve and the water outlet valve, which can effectively realize the intelligent management of the liquid level control in the tank body. After the pressure sensor 28 and the oil-water interface meter 29 are installed on the tank body, the tank body is subjected to pressure resistance test and non-destructive testing to make it comply with relevant regulations and exit standards. In addition, the tank body is also provided with a front inspection manhole 22 and a rear inspection manhole 23, which can facilitate the inspection and replacement of fillers and cleaning of sludge during the shutdown period. In actual operation, the front inspection manhole 22 and the rear inspection manhole 23 can be opened and closed by rotating left and right, which avoids the risk of maintenance personnel falling.

[0039] Here, the strong and weak current equipment on the horizontal dehydration tank 2 and the associated strong and weak current equipment are assembled on site, and all the strong and weak currents meet the explosion-proof requirements.

[0040] Aiming at the problem that conventional slug flow catchers are not well suited for gathering and transportation pipelines for transporting oil well produced fluids, the utility model proposes a slug flow separator, including a vertical degassing tower and a horizontal dehydration tank. By allowing the slug flow to flow through the vertical degassing tower and the horizontal dehydration tank in sequence, the slug flow is separated into three-phase fluids of oil, water and gas, and each phase of fluid is transported through different outlets for further processing; wherein the vertical degassing tower can provide sufficient degassing space to avoid the narrow gas phase space of the conventional horizontal slug flow catcher, and the degassing The vertical degassing tower also provides sufficient sedimentation space for solid phases such as scaling to avoid the risk of solid phase blockage causing the slug flow separator to stop working. The horizontal dehydration tank is used to separate the oil-water mixture transported by the vertical degassing tower, avoiding the mutual interference between the gas and liquid phases. The separated oil-water interface is clear, the oil phase liquid has high quality and purity, and the drainage oil content is extremely low. In addition, in the process of oil-water separation, the horizontal dehydration tank is fully operated, which can effectively improve the separation efficiency. The cooperation between the vertical degassing tower and the horizontal dehydration tank can effectively improve the problems of conventional slug flow collectors, such as unqualified separation efficiency, uneconomical equipment selection, and inability of liquid level control to meet operational requirements.

[0041] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A slug flow separator, characterized in that: The slug flow separator comprises: a vertical degassing tower (1) and a horizontal dehydration tank (2); wherein: The vertical degassing tower (1) is used to perform gas-liquid separation on the slug flow to obtain an oil-water mixture and gas, discharge the gas through a gas phase discharge port (18) of the vertical degassing tower (1), and discharge the oil-water mixture through a liquid discharge connection port (17) of the vertical degassing tower (1); the gas phase discharge port (18) is arranged above the tower body of the vertical degassing tower (1), and the liquid discharge connection port (17) is respectively arranged in the middle and lower parts of the tower body; The horizontal dehydration tank (2) is used to separate the oil-water mixture to obtain an oil phase liquid and a water phase liquid, discharge the oil phase liquid through the oil outlet (25) of the horizontal dehydration tank (2), and discharge the water phase liquid through the water outlet (26) of the horizontal dehydration tank (2); the oil outlet (25) and the water outlet (26) are symmetrically arranged along the axis of the tank body of the horizontal dehydration tank (2), and the oil outlet (25) is arranged at the top of the tank body; The vertical degassing tower (1) is connected to the horizontal dehydration tank (2) via the liquid discharge connection port (17) and the liquid inlet connection port (24) of the horizontal dehydration tank (2), wherein the liquid inlet connection port (24) is arranged on one side of the tank body and on the top of the tank body.

2. The slug flow separator according to claim 1, characterized in that: A liquid level meter (11) is arranged along the axis of the tower body in the middle of the outer wall of the tower body, and the liquid level meter (11) is used to detect the liquid level of the slug flow in real time; A demisting filler (12) is arranged at the upper part of the tower body; the demisting filler (12) is used to remove impurities and moisture in the gas, and the demisting filler (12) is located above the liquid level meter (11); An upper inspection manhole (13) and a lower inspection manhole (14) for maintenance and exploration are arranged at intervals on the tower body along the axis of the tower body; A main feed inlet (15) is also provided in the middle of the tower body; A mud and sand discharge port (16) for discharging sewage is arranged at the bottom of the tower body, and an overpressure relief port (19) for relieving pressure is arranged at the top of the tower body.

3. The slug flow separator according to claim 2, characterized in that: The height of the demisting filler (12) is 1.2 to 1.5 times the inner diameter of the tower body.

4. The slug flow separator according to claim 2, characterized in that: The liquid discharge connection port (17) is respectively provided between the liquid level meter (11) and the demisting filler (12), and on one side of the lower inspection manhole (14), and the gas phase discharge port (18) is provided on one side of the upper inspection manhole (13).

5. The slug flow separator according to claim 1, characterized in that: The pipe cross-sectional area of ​​the gas phase discharge port (18) is one quarter to one half of the pipe cross-sectional area of ​​the liquid discharge communication port (17).

6. The slug flow separator according to claim 1, characterized in that: A coalescing filler (21) for separating the oil-water mixture is arranged in the middle section of the tank body; A front inspection manhole (22) and a rear inspection manhole (23) for maintenance and exploration are arranged at intervals on the tank body along the axis of the tank body; A sludge discharge port (27) for discharging sewage is provided at the bottom of the tank body, and the sludge discharge port (27) is below the front inspection manhole (22); A pressure sensor (28) is also arranged on the top of the tank body. The pressure sensor (28) is used to monitor the blockage degree of the coalescing filler (21), and the pressure sensor (28) is respectively arranged on both sides of the coalescing filler (21).

7. The slug flow separator according to claim 6, characterized in that: The length of the agglomeration filler (21) is 4 to 8 times the inner diameter of the tank body.

8. The slug flow separator according to claim 1, characterized in that: The oil outlet (25) is equipped with an oil outlet valve, and the water outlet (26) is equipped with a water outlet valve.

9. The slug flow separator according to claim 8, characterized in that An oil-water interface meter (29) is also arranged on the top of the tank body, and the oil-water interface meter (29) is used to control the opening and closing of the oil outlet valve and the water outlet valve.

Images