Oil field measure flowback fluid treatment device

Abstract

The utility model relates to the technical field of flow-back fluid, and discloses an oil field measure flow-back fluid treatment device which comprises a fluid inlet pipe, the right end of the fluid inlet pipe is communicated with a preliminary filter frame, the left side of the inner wall of the preliminary filter frame is fixedly connected with a coarse filter screen, and the middle of the inner wall of the preliminary filter frame is fixedly connected with a fine filter screen. The right end of the preliminary filtering frame is communicated with a cyclone separator, the bottom end of the cyclone separator is communicated with a stirring barrel, a rotating motor is fixedly mounted in the middle of the top wall of the stirring barrel, and a stirring blade is fixedly connected to the middle of the bottom end of the rotating motor. According to the oil field flow-back liquid treatment device, sewage is preliminarily filtered through the coarse filter screen, the fine filter screen and the cyclone separator, suspended solids and precipitates in water are fully dispersed and mixed by using chemical agents to form sludge, effective treatment and purification of oil field measure flow-back liquid are realized, environmental pollution and resource waste are reduced, and the oil field flow-back liquid treatment device is energy-saving and environment-friendly. The method has important environmental protection and economic values.

Description

Technical Field

[0001] The utility model relates to the technical field of flowback fluid, in particular to an oilfield flowback fluid processing device. Background Art

[0002] In the process of oilfield exploitation, the treatment of flowback fluid has always been an important link. The traditional treatment methods are sedimentation and filtration, but these methods are not efficient and it is difficult to completely remove harmful substances in the flowback fluid.

[0003] A common method for treating oilfield flowback fluid is to use chemical agents for precipitation and then remove solid impurities through filtration equipment. However, this method not only has high treatment costs but may also cause secondary pollution to the environment.

[0004] When treating oilfield measure flowback fluid with existing technology, the impurity composition in the flowback fluid is relatively complex, and the flowback fluid needs to be filtered multiple times and precipitated for a long time in a variety of operations. This has the problems of low treatment efficiency, high cost and high environmental pollution risk. Therefore, there is an urgent need for an efficient and environmentally friendly oilfield measure flowback fluid treatment method and device. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an oilfield measure return fluid processing device, which aims to improve the existing technology for treating oilfield measure return fluid. Due to the complex impurity components in the return fluid, the return fluid needs to be filtered multiple times and precipitated for a long time in multiple operations, resulting in low processing efficiency, high cost and high environmental pollution risk.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an oilfield measure flowback liquid processing device, comprising a liquid inlet pipe, the right end of the liquid inlet pipe is connected to a preliminary filter rack, a coarse filter is fixedly connected to the left side of the inner wall of the preliminary filter rack, a fine filter is fixedly connected to the middle of the inner wall of the preliminary filter rack, the right end of the preliminary filter rack is connected to a cyclone separator, the bottom end of the cyclone separator is connected to a stirring barrel, a rotating motor is fixedly installed in the middle of the top wall of the stirring barrel, a stirring piece is fixedly connected to the middle of the bottom end of the rotating motor, the left end of the stirring barrel is connected to a sedimentation tank, a water pump is pierced through the middle of the top wall of the sedimentation tank, the front end of the water pump is connected to a water pump, the bottom end of the water pump is fixedly connected to a clear water tank, and a waste discharge mechanism is provided on the stirring barrel and the bottom wall of the sedimentation tank.

[0007] Through the above technical solution: the coarse filter and the fine filter intercept large particles of solid impurities and suspended matter, the cyclone separator uses the action of centrifugal force to separate the oil-water mixture in the return fluid, the separated sewage enters the mixing barrel and is stirred and mixed by the rotating motor to drive the stirring blade, and the addition of chemical agents fully disperses and mixes the suspended matter and sediment in the water, providing favorable conditions for subsequent treatment, and then enters the sedimentation tank and gradually settles to the bottom of the tank under the action of gravity to form sludge, while the supernatant is pumped to the clear water tank for storage by a water pump, thus realizing the effective treatment and purification of the return fluid of oilfield measures, reducing environmental pollution and waste of resources, and having important environmental protection and economic value.

[0008] As a further description of the above technical solution:

[0009] The waste discharge mechanism includes multiple columns, and the outer walls of the multiple columns on the left and the outer walls of the multiple columns on the right are fixedly connected with square brackets. The rear side of the square bracket on the left is fixedly connected with a fixed plate, and a mud pump is fixedly installed on the middle part of the top wall of the fixed plate. The rear end of the mud pump is connected to the bottom end of the sedimentation tank, and the rear end of the mud pump is connected to a special-shaped output pipe, and the bottom end of the special-shaped output pipe is fixedly connected to a waste tank. The top of the cyclone separator is connected with a discharge pipe, and the bottom end of the discharge pipe is fixedly connected to the right top end of the inner wall of the waste tank. The left side of the preliminary filter frame is fixedly connected with a discharge trough, and the discharge trough is provided with an inclination angle.

[0010] Through the above technical solution: the waste generated after sedimentation will gather at the bottom of the sedimentation tank, and then the mud pump will use suction to suck in the waste settled at the bottom, and transport it to the waste tank through the special-shaped output pipe. On the other hand, the waste generated by the cyclone separator is directly discharged into the waste tank through the discharge pipe and mixed with the waste sucked from the sedimentation tank. The discharge trough collects the waste generated during the preliminary filtration process. Finally, all the waste is concentrated in the waste tank, ensuring that the waste generated during the return liquid treatment process can be effectively treated and avoiding pollution to the environment.

[0011] As a further description of the above technical solution:

[0012] A control console is fixedly connected to the middle of the front side of the clean water tank, and a plurality of control buttons are fixedly installed on the top wall of the control console. The plurality of control buttons are electrically connected to the rotating motor, the water pump and the mud pump.

[0013] Through the above technical solution: the entire device is automatically controlled through the console, and the operator can control the buttons to connect with the rotating motor, water pump and mud pump through electronic connecting lines, allowing the operator to start and stop these key equipment through the console.

[0014] As a further description of the above technical solution:

[0015] A pressure gauge is fixedly connected to the front side of the top wall of the clear water tank, and the pressure gauge is electrically connected to the control console.

[0016] Through the above technical solution: the pressure gauge can not only indicate the current pressure situation in the clean water tank, but it is also connected to the control console through an electronic circuit, ensuring the real-time transmission and accuracy of the data.

[0017] As a further description of the above technical solution:

[0018] The right bottom end of the clean water tank is connected to a water outlet, and a solenoid valve is fixedly installed in the middle of the water outlet, and the solenoid valve is electrically connected to the control console.

[0019] Through the above technical solution: a water outlet is provided at the bottom right side of the clean water tank, which is the main channel for the clean water tank to discharge clean water. The electromagnetic valve in the middle controls the outflow of clean water to prevent waste caused by excessive water flow. The operation of the electromagnetic valve is also completed through the console. The operator can open or close the valve as needed, thereby realizing effective management of the water outlet.

[0020] As a further description of the above technical solution:

[0021] The right side of the top wall of the mixing barrel is connected with a conical dosing port, and the top end of the conical dosing port is rotatably connected with a sealing valve.

[0022] Through the above technical solution: the conical dosing port makes it easy to add the agent into the mixing barrel to achieve the treatment of the return liquid. The top of the conical dosing port is rotatably connected with a sealing valve, which can effectively prevent the leakage of the agent and ensure the treatment effect.

[0023] As a further description of the above technical solution:

[0024] The top wall of the mixing barrel, the top wall of the clean water tank and the top wall of the fixed plate are all fixedly connected with a motor protection shell, and the outer walls of the plurality of motor protection shells are all provided with ventilation slots.

[0025] Through the above technical solution: the top wall of the mixing barrel, the top wall of the clear water tank and the top wall of the fixed plate are all installed with a motor protection shell to protect the motor from being invaded by substances such as backflow liquid. The outer wall of the motor protection shell is provided with a ventilation groove, which is beneficial to the heat dissipation of the motor and improves the operating efficiency of the equipment.

[0026] As a further description of the above technical solution:

[0027] The front and rear ends of the left side of the preliminary filter frame are fixedly connected with two fixing buckles, and fixing strips are fixedly connected between the two fixing buckles on the front side and the two fixing buckles on the rear side.

[0028] Through the above technical solution: fixing buckles and fixing strips, the coarse filter and the fine filter can be fixed in the preliminary filter frame. At the same time, the fixing buckles can be disassembled and the coarse filter and the fine filter can be replaced by tools such as screwdrivers.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, large particles of solid impurities and suspended matter are intercepted by coarse and fine filter screens, and the cyclone separator uses centrifugal force to separate the oil-water mixture in the return liquid. The separated sewage enters the mixing barrel and is stirred and mixed by the rotating motor-driven stirring blade. Chemical agents are added to fully disperse and mix the suspended matter and sediment in the water, providing favorable conditions for subsequent treatment. Then it enters the sedimentation tank and gradually settles to the bottom of the tank under the action of gravity to form sludge, while the supernatant is pumped to the clear water tank for storage by a water pump, realizing the effective treatment and purification of the return liquid of oilfield measures, reducing environmental pollution and waste of resources, and having important environmental protection and economic value.

[0031] 2. In the utility model, the waste generated after sedimentation will gather at the bottom of the sedimentation tank, and then the mud pump will use suction to suck the waste settled at the bottom, and transport it to the waste tank through the special-shaped output pipe. On the other hand, the waste generated by the cyclone separator is directly discharged into the waste tank through the discharge pipe and mixed with the waste sucked from the sedimentation tank. The discharge trough collects the waste generated in the preliminary filtration process. Finally, all the waste is concentrated in the waste tank, ensuring that the waste generated in the return liquid treatment process can be effectively treated and avoiding pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a three-dimensional diagram of an oilfield flowback fluid treatment device proposed by the utility model;

[0033] Figure 2 This is a rear view of an oilfield flowback fluid treatment device proposed by the utility model;

[0034] Figure 3 This is a structural diagram of a fine filter screen of an oilfield flowback fluid treatment device proposed by the utility model;

[0035] Figure 4 The utility model provides a cross-sectional view of a mixing barrel of an oilfield flowback fluid processing device.

[0036] Legend:

[0037] 1. Liquid inlet pipe; 2. Waste discharge mechanism; 201. Column; 202. Square bracket; 203. Fixed plate; 204. Mud pump; 205. Special-shaped output pipe; 206. Waste tank; 207. Discharge pipe; 208. Discharge trough; 3. Preliminary filter rack; 4. Coarse filter; 5. Fine filter; 6. Cyclone separator; 7. Mixing barrel; 8. Rotating motor; 9. Mixing blade; 10. Sedimentation tank; 11. Suction pipe; 12. Suction pump; 13. Clear water tank; 14. Control console; 15. Control button; 16. Pressure gauge; 17. Water outlet; 18. Solenoid valve; 19. Conical dosing port; 20. Sealing valve; 21. Motor protection shell; 22. Ventilation slot; 23. Fixing buckle; 24. Fixing strip. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Reference Figure 1 、 Figure 3 and Figure 4 , the utility model provides an embodiment: an oilfield measure flowback liquid processing device, including a liquid inlet pipe 1, the right end of the liquid inlet pipe 1 is connected with a preliminary filter rack 3, the left side of the inner wall of the preliminary filter rack 3 is fixedly connected with a coarse filter screen 4, the middle part of the inner wall of the preliminary filter rack 3 is fixedly connected with a fine filter screen 5, the right end of the preliminary filter rack 3 is connected with a cyclone separator 6, the bottom end of the cyclone separator 6 is connected with a stirring barrel 7, a rotating motor 8 is fixedly installed in the middle of the top wall of the stirring barrel 7, the middle part of the bottom end of the rotating motor 8 is fixedly connected with a stirring piece 9, the left end of the stirring barrel 7 is connected with a sedimentation tank 10, a water pumping pipe 11 is penetrated in the middle of the top wall of the sedimentation tank 10, the front end of the water pumping pipe 11 is connected with a water pump 12, the bottom end of the water pump 12 is fixedly connected with a clear water tank 13, and a waste discharge mechanism 2 is provided on the bottom wall of the stirring barrel 7 and the sedimentation tank 10;

[0040] Specifically, the return liquid enters the preliminary filter frame 3 through the liquid inlet pipe 1. The coarse filter 4 and the fine filter 5 in the preliminary filter frame 3 respectively play the role of preliminary filtration, intercepting large particles of solid impurities and suspended matter, reducing the burden on subsequent processing equipment. The return liquid after preliminary filtration flows into the cyclone separator 6. The cyclone separator 6 uses the action of centrifugal force to separate the oil-water mixture in the return liquid, so that the oil rises and flows out from the center, while the sewage containing a small amount of oil and impurities flows out from the outer edge, realizing preliminary oil-water separation. The separated sewage enters the mixing barrel 7 and is rotated by the motor. 8 drives the stirring blade 9 to rotate, stirs and mixes the sewage, and fully disperses and mixes the suspended matter and sediment in the water through chemical agents, providing favorable conditions for subsequent treatment. The stirred sewage flows into the sedimentation tank 10, and the suspended matter and sediment in the sewage gradually settle to the bottom of the tank under the action of gravity to form sludge, while the supernatant is pumped to the clear water tank 13 for storage through the suction pipe 11 and the suction pump 12, thereby achieving effective treatment and purification of the return fluid of the oilfield measures, reducing environmental pollution and waste of resources, and having important environmental protection and economic value.

[0041] Reference Figure 1 and Figure 2 The waste discharge mechanism 2 includes a plurality of columns 201, and the outer walls of the plurality of columns 201 on the left and the outer walls of the plurality of columns 201 on the right are fixedly connected with a square bracket 202. The rear side of the left square bracket 202 is fixedly connected with a fixed plate 203, and a mud pump 204 is fixedly installed in the middle of the top wall of the fixed plate 203. The rear end of the mud pump 204 is connected to the bottom end of the sedimentation tank 10, and the rear end of the mud pump 204 is connected to a special-shaped output pipe 205. The bottom end of the special-shaped output pipe 205 is fixedly connected to a waste tank 206. The top of the cyclone separator 6 is connected with a discharge pipe 207, and the bottom end of the discharge pipe 207 is fixedly connected to the top right side of the inner wall of the waste tank 206. The left side of the preliminary filter frame 3 is fixedly connected with a discharge trough 208, and the discharge trough 208 is provided with an inclination angle;

[0042] Specifically, the waste generated after sedimentation will be collected at the bottom of the sedimentation tank 10. At this time, the mud pump 204 on the fixed plate 203 starts to work. The rear end of the mud pump 204 is connected to the bottom of the sedimentation tank 10 through a pipeline, and its strong suction force is used to suck the waste settled at the bottom. The sucked waste is then transported to the waste tank 206 through the special-shaped output pipe 205. The design of the special-shaped output pipe 205 ensures the smooth transmission of the waste and avoids the occurrence of blockage. On the other hand, the cyclone separator 6 also produces waste during the separation process. These wastes are transported to the waste tank 206 through the special-shaped output pipe 205. The discharge pipe 207 discharges directly into the waste tank 206 and mixes with the waste material sucked in from the sedimentation tank 10. The discharge trough 208 set on the left side of the preliminary filtration rack 3 is used to collect the waste material generated during the preliminary filtration process. The discharge trough 208 has a certain inclination angle to facilitate the natural flow of waste material into the waste tank 206. Finally, all the waste material is concentrated in the waste tank 206, waiting for further processing or disposal. The design of the entire waste discharge mechanism 2 is reasonable and the operation is efficient, ensuring that the waste material generated during the backflow liquid treatment process can be effectively processed and avoiding pollution to the environment.

[0043] Reference Figure 1 and Figure 2 A control console 14 is fixedly connected to the middle of the front side of the clean water tank 13, and a plurality of control buttons 15 are fixedly installed on the top wall of the control console 14. The plurality of control buttons 15 are electrically connected to the rotating motor 8, the water pump 12 and the mud pump 204; a pressure gauge 16 is fixedly connected to the front side of the top wall of the clean water tank 13, and the pressure gauge 16 is electrically connected to the control console 14; the right bottom end of the clean water tank 13 is connected to a water outlet 17, and a solenoid valve 18 is fixedly installed in the middle of the water outlet 17, and the solenoid valve 18 is electrically connected to the control console 14;

[0044] Specifically, the entire device is automatically controlled through the control console 14. The operator can control the button 15 to connect to the rotating motor 8, the water pump 12 and the mud pump 204 through electronic connecting lines, allowing the operator to start and stop these key equipment through the control console 14. The pressure gauge 16 can not only indicate the current pressure situation in the clean water tank 13, but it is also connected to the control console 14 through electronic circuits to ensure real-time transmission and accuracy of data. At the bottom right end of the clean water tank 13, there is a water outlet 17, which is the main channel for the clean water tank 13 to discharge clean water. The electromagnetic valve 18 in the middle controls the outflow of clean water to prevent excessive water flow and waste. The operation of the electromagnetic valve 18 is also completed through the control console 14. The operator can open or close the valve as needed, thereby achieving effective management of the water outlet.

[0045] Reference Figure 1 、 Figure 2 and Figure 3The right side of the top wall of the mixing barrel 7 is connected to a conical dosing port 19, and the top of the conical dosing port 19 is rotatably connected to a sealing valve 20; the top wall of the mixing barrel 7, the top wall of the clear water tank 13 and the top wall of the fixing plate 203 are all fixedly connected to a motor protection shell 21, and the outer walls of the multiple motor protection shells 21 are all provided with ventilation slots 22; the front and rear ends of the left side of the preliminary filter frame 3 are fixedly connected to two fixing buckles 23, and the two front fixing buckles 23 and the two rear fixing buckles 23 are fixedly connected with fixing strips 24 adjacent to each other;

[0046] Specifically, the conical dosing port 19 facilitates the addition of the agent into the mixing barrel 7 to achieve the treatment of the return liquid. The top of the conical dosing port 19 is rotatably connected to a sealing valve 20, which can effectively prevent the leakage of the agent and ensure the treatment effect. The top wall of the mixing barrel 7, the top wall of the clear water tank 13 and the top wall of the fixed plate 203 are all equipped with a motor protection shell 21 to protect the motor from the invasion of substances such as the return liquid. The outer wall of the motor protection shell 21 is provided with a ventilation groove 22, which is beneficial to the heat dissipation of the motor and improves the operation efficiency of the equipment. The fixing buckle 23 and the fixing bar 24 can fix the coarse filter 4 and the fine filter 5 in the preliminary filter frame 3. At the same time, the fixing buckle 23 can be disassembled and the coarse filter 4 and the fine filter 5 can be replaced by tools such as a screwdriver.

[0047] Working principle: The return liquid enters the preliminary filter frame 3 through the liquid inlet pipe 1. The coarse filter 4 and the fine filter 5 in the preliminary filter frame 3 respectively play the role of preliminary filtration, intercepting large particles of solid impurities and suspended matter, reducing the burden on subsequent treatment equipment. The return liquid after preliminary filtration flows into the cyclone separator 6. The cyclone separator 6 uses the action of centrifugal force to separate the oil-water mixture in the return liquid, so that the oil rises and flows out from the center, while the sewage containing a small amount of oil and impurities flows out from the outer edge, realizing preliminary oil-water separation. The separated sewage enters the mixing barrel 7, which is driven by the rotating motor 8 to drive the stirring blade 9 to rotate, stirring the sewage. Stirring and mixing, the suspended matter and sediment in the water are fully dispersed and mixed by chemical agents, providing favorable conditions for subsequent treatment. The stirred sewage flows into the sedimentation tank 10, and the suspended matter and sediment in the sewage in the sedimentation tank 10 gradually settle to the bottom of the tank under the action of gravity to form sludge, while the supernatant is pumped to the clean water tank 13 for storage through the suction pipe 11 and the suction pump 12, thereby achieving effective treatment and purification of the return fluid of the oil field measures, reducing environmental pollution and waste of resources, and having important environmental protection and economic value. The model of the rotating motor 8 is RS-385 motor, and the model of the suction pump 12 is Goulds 3196.

[0048] Moreover, the waste generated after sedimentation will be collected at the bottom of the sedimentation tank 10. At this time, the mud pump 204 on the fixed plate 203 starts to work. The rear end of the mud pump 204 is connected to the bottom of the sedimentation tank 10 through a pipeline, and the waste settled at the bottom is sucked in by its strong suction force. The sucked waste is then transported to the waste tank 206 through the special-shaped output pipe 205. The design of the special-shaped output pipe 205 ensures the smooth transmission of the waste and avoids the occurrence of blockage. On the other hand, the cyclone separator 6 also produces waste during the separation process. These wastes are directly discharged through the discharge pipe 207. It is discharged into the waste tank 206 and mixed with the waste material sucked from the sedimentation tank 10. The discharge trough 208 set on the left side of the preliminary filtration frame 3 is used to collect the waste material generated during the preliminary filtration process. The discharge trough 208 has a certain inclination angle to facilitate the natural flow of waste material into the waste tank 206. Finally, all the waste material is concentrated in the waste tank 206, waiting for further processing or disposal. The design of the entire waste discharge mechanism 2 is reasonable and the operation is efficient, ensuring that the waste material generated during the backflow liquid treatment process can be effectively processed and avoiding pollution to the environment. The model of the mud pump 204 is Warman AH.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oilfield flowback fluid processing device, comprising a liquid inlet pipe (1), characterized in that: The right end of the liquid inlet pipe (1) is connected to a preliminary filter rack (3), a coarse filter (4) is fixedly connected to the left side of the inner wall of the preliminary filter rack (3), a fine filter (5) is fixedly connected to the middle of the inner wall of the preliminary filter rack (3), the right end of the preliminary filter rack (3) is connected to a cyclone separator (6), the bottom end of the cyclone separator (6) is connected to a stirring barrel (7), a rotating motor (8) is fixedly installed in the middle of the top wall of the stirring barrel (7), and a stirring blade ( 9), the left end of the stirring barrel (7) is connected to the sedimentation tank (10), a water pump (11) is penetrated through the middle of the top wall of the sedimentation tank (10), the front end of the water pump (11) is connected to the water pump (12), the bottom end of the water pump (12) is fixedly connected to the clean water tank (13), and the bottom walls of the stirring barrel (7) and the sedimentation tank (10) are provided with a waste discharge mechanism (2), and the waste discharge mechanism (2) is used to collect the waste generated by the equipment during the filtration process for convenient centralized cleaning.

2. The oilfield flowback fluid treatment device according to claim 1, characterized in that: The waste discharge mechanism (2) comprises a plurality of columns (201), the outer walls of the plurality of columns (201) on the left and the outer walls of the plurality of columns (201) on the right are fixedly connected with square brackets (202), the rear side of the left square bracket (202) is fixedly connected with a fixed plate (203), a mud pump (204) is fixedly installed in the middle of the top wall of the fixed plate (203), and the rear end of the mud pump (204) is connected to the bottom end of the sedimentation tank (10). The rear end of the mud pump (204) is connected to a special-shaped output pipe (205), the bottom end of the special-shaped output pipe (205) is fixedly connected to a waste tank (206), the top end of the cyclone separator (6) is connected to a discharge pipe (207), the bottom end of the discharge pipe (207) is fixedly connected to the top right side of the inner wall of the waste tank (206), and the left side of the preliminary filter frame (3) is fixedly connected to a discharge trough (208), and the discharge trough (208) is provided with an inclination angle.

3. The oilfield flowback fluid treatment device according to claim 2, characterized in that: A control console (14) is fixedly connected to the middle of the front side of the clear water tank (13), and a plurality of control buttons (15) are fixedly installed on the top wall of the control console (14). The plurality of control buttons (15) are electrically connected to the rotating motor (8), the water pump (12) and the mud pump (204).

4. The oilfield flowback fluid treatment device according to claim 3, characterized in that: A pressure gauge (16) is fixedly connected to the front side of the top wall of the clear water tank (13), and the pressure gauge (16) is electrically connected to the console (14).

5. The oilfield flowback fluid treatment device according to claim 4, characterized in that: The bottom right end of the clean water tank (13) is connected to a water outlet (17), and a solenoid valve (18) is fixedly installed in the middle of the water outlet (17). The solenoid valve (18) is electrically connected to the console (14).

6. The oilfield flowback fluid treatment device according to claim 1, characterized in that: The right side of the top wall of the mixing barrel (7) is connected to a conical dosing port (19), and the top end of the conical dosing port (19) is rotatably connected to a sealing valve (20).

7. The oilfield flowback fluid treatment device according to claim 2, characterized in that: The top wall of the mixing barrel (7), the top wall of the clear water tank (13), and the top wall of the fixed plate (203) are all fixedly connected with a motor protection shell (21), and the outer walls of the plurality of motor protection shells (21) are each provided with a ventilation slot (22).

8. The oilfield flowback fluid treatment device according to claim 1, characterized in that: The front and rear ends of the left side of the preliminary filter frame (3) are fixedly connected to two fixing buckles (23), and fixing strips (24) are fixedly connected between the two fixing buckles (23) on the front side and the two fixing buckles (23) on the rear side.

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