Oil field fracturing flow-back fluid treatment device

Abstract

The utility model discloses an oil field fracturing flow-back fluid treatment device which comprises a box body, the inner top wall of the box body is fixedly connected with a first electric telescopic rod, the output end of the first electric telescopic rod is fixedly connected with an extrusion plate, and the interior of the extrusion plate is fixedly connected with a first filter layer; the discharging port is located in the surface of the box body, a sliding groove is formed in the discharging port, an outlet filter plate is slidably connected to the interior of the sliding groove, and a second filter layer is fixedly connected to the interior of the outlet filter plate; the box body, the extrusion plate, the first filter layer, the discharge hole, the outlet filter plate and the second filter layer are matched for use, so that floccules generated after reaction can be extruded and collected by the device, the time for waiting for precipitation is shortened, the generated floccules can be directly filtered and limited and collected by the device, and the production efficiency is improved. And meanwhile, a secondary filter is additionally arranged at the outlet, so that the working quality of the device is improved, and the practicability of the device is improved.

Description

Technical Field

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

[0002] Oil layer fracturing generally refers to the use of the principle of liquid pressure transmission. A high-pressure, large-displacement pump is used on the ground to inject a liquid with a certain viscosity into the oil layer at a capacity greater than the oil layer can absorb, so that the wellbore pressure gradually increases. When the pressure increases to a level greater than the pressure required for the oil layer to rupture, one or several horizontal or vertical cracks will form in the oil layer. Petroleum fracturing flowback fluid refers to the liquid that has been injected into the ground during the oil production process to complete the fracturing purpose. The remaining substances in the fracturing fluid must be returned to the ground for treatment or reuse. In the process of oil field exploitation, hydraulic fracturing uses a large amount of water resources and the fracturing flowback fluid is seriously polluted. Regardless of cost or environmental considerations, the reuse of flowback fluid is the future trend of the development of the oil and gas field industry. Therefore, we need an oil field fracturing flowback fluid treatment device to effectively treat the flowback fluid.

[0003] The defect of an oilfield fracturing return fluid treatment device in the prior art is: Patent document CN210065386U discloses "The utility model discloses an oilfield fracturing return fluid treatment device, including a box body, a top cover, an outer shell and a transmission rod, a water outlet pipe is provided at the bottom end of the outer surface of the box body, a filter frame is sleeved inside the box body, a coil is fixed at the inner bottom end of the box body, a connecting pipe is welded between the coils, the coil is located on the outer side of the box body and has a second interface, a top cover is placed on the top cover of the box body, an outer shell is welded on the top surface of the top cover, a transmission rod is rotatably installed on the top cover through a bearing, a first interface is plugged inside the transmission rod, a stirring plate is provided inside the filter frame, a liquid outlet is penetrated through the stirring plate, a bevel gear is welded on the top end of the transmission rod, a motor is fixed on the surface of the top cover on one side of the outer shell, and a bevel gear is also provided at the output end of the motor. The utility model has the advantages of facilitating oxidation, flocculation and filtration of the return fluid, thereby reducing the pollution of wastewater to the environment."

[0004] However, although the above device can process the oil fracturing return fluid when in use, when the above device is used to process the flocculent material in the later stage, it not only takes a certain amount of time to wait for its sedimentation, but also the flocculent material may float again when the filter is taken out after sedimentation. Therefore, the equipment still has certain shortcomings and needs further improvement. Utility Model Content

[0005] The utility model aims to provide an oilfield fracturing flowback fluid processing device to solve the problem that the working efficiency is reduced and part of the precipitated floccules are re-scattered when taking the filter screen.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an oilfield fracturing flowback fluid processing device, comprising a box body, the inner top wall of the box body is fixedly connected to a first electric telescopic rod, the output end of the first electric telescopic rod is fixedly connected to an extrusion plate, and the interior of the extrusion plate is fixedly connected to a first filter layer;

[0007] The discharge port is located on the surface of the box body, a sliding groove is provided inside the discharge port, an outlet filter plate is slidably connected inside the sliding groove, and a second filter layer is fixedly connected inside the outlet filter plate.

[0008] As an optional technical solution, a second electric telescopic rod is fixedly connected to the bottom wall of the box body, two groups of the second electric telescopic rod are provided, and the top of the output end of the second electric telescopic rod is fixedly connected to a support plate.

[0009] As an optional technical solution, a processing barrel is slidably disposed inside the box body, and the processing barrel is located above the support plate.

[0010] As an optional technical solution, a feed port is provided on the surface of the box body, a cleaning port is provided on the surface of the box body, and the cleaning port is located below the feed port, and a discharge port is provided on the surface of the box body, and the discharge port is located on the corresponding surface of the feed port.

[0011] As an optional technical solution, a first hole is opened on the surface of the processing barrel, and the first hole corresponds to the feed port, a second hole is opened on the surface of the processing barrel, and the second hole corresponds to the cleaning port, and a third hole is opened on the surface of the processing barrel, and the third hole corresponds to the discharge port.

[0012] As an optional technical solution, the inner bottom wall of the box body is fixedly connected to a driving motor, and the output end of the driving motor is fixedly connected to a rotating shaft.

[0013] As an optional technical solution, a telescopic shaft is slidably connected inside the rotating shaft, and the top of the telescopic shaft is fixedly connected to the bottom of the processing barrel.

[0014] As an optional technical solution, an observation screen is provided on the surface of the box, and a control panel is provided on the surface of the box.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The combination of the box, the first electric telescopic rod, the extrusion plate, the first filter layer, the discharge port, the outlet filter plate and the second filter layer provided by the utility model enables the device to squeeze and collect the flocs produced after the reaction, thereby reducing the waiting time for sedimentation. The device can directly filter and limit the collection of the produced flocs, thereby accelerating the processing speed and improving the working efficiency of the device. At the same time, a secondary filter is added at the outlet to improve the working quality of the device and increase the practicality of the device.

[0017] 2. The combination of the cleaning port, the discharge port, the sliding groove, the outlet filter plate and the second filter layer provided by the utility model enables the device to clean the filter device. The internal filter layer can be rinsed with water, and the external filter layer can be disassembled and cleaned, so that the device can be kept clean, which not only prolongs the service life, but also provides convenience for the next work, increasing the practicality and convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the front cross-sectional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the extruded plate structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the telescopic shaft structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the sliding groove structure of the utility model;

[0023] Figure 6 This is a schematic diagram of the second filter layer structure of the utility model.

[0024] In the figure: 1. box body; 2. first electric telescopic rod; 3. extrusion plate; 4. first filter layer; 5. second electric telescopic rod; 6. support plate; 7. processing barrel; 8. feed port; 9. cleaning port; 10. discharge port; 11. first hole; 12. second hole; 13. third hole; 14. driving motor; 15. rotating shaft; 16. telescopic shaft; 17. sliding groove; 18. outlet filter plate; 19. second filter layer; 20. observation screen; 21. control panel. DETAILED DESCRIPTION

[0025] Embodiment 1:

[0026] See also Figure 2 , Figures 5 and 6, an oilfield fracturing return fluid processing device, comprising a box body 1, the box body 1 is used to support the device to perform oilfield fracturing return fluid processing work, the inner top wall of the box body 1 is fixedly connected with a first electric telescopic rod 2, the first electric telescopic rod 2 is an existing technology, and can provide power for the lifting and lowering activities of a squeeze plate 3, the output end of the first electric telescopic rod 2 is fixedly connected with the squeeze plate 3, the squeeze plate 3 is convenient for the installation of a first filter layer 4, and the interior of the squeeze plate 3 is fixedly connected with the first filter layer 4;

[0027] The discharge port 10 is located on the surface of the casing 1. The discharge port 10 facilitates the treated oilfield fracturing return fluid to be discharged from the interior of the casing 1. A sliding groove 17 is provided inside the discharge port 10. The sliding groove 17 has an offset groove inside, so that the outlet filter plate 18 can be rotated inside for fixed limit to avoid movement due to water erosion. The outlet filter plate 18 is slidably connected inside the sliding groove 17. The outlet filter plate 18 facilitates the installation of the second filter layer 19. The outlet filter plate 18 is fixedly connected inside with the second filter layer 19. The second filter layer 19 can filter the oilfield fracturing return fluid multiple times to avoid mixing of flocs.

[0028] As an optional technical solution, a second electric telescopic rod 5 is fixedly connected to the bottom wall of the box body 1. Two groups of second electric telescopic rods 5 are provided. The top of the output end of the second electric telescopic rod 5 is fixedly connected to a support plate 6. As an existing technology, the second electric telescopic rod 5 can assist in providing power for lifting and lowering the processing barrel 7.

[0029] As an optional technical solution, a processing barrel 7 is slidably disposed inside the box body 1 , and the processing barrel 7 is located above the support plate 6 , so that the processing barrel 7 is convenient for processing the oilfield fracturing return fluid inside.

[0030] As an optional technical solution, a feed port 8 is provided on the surface of the box body 1, which is convenient for the injection of materials. A cleaning port 9 is provided on the surface of the box body 1, and the cleaning port 9 is located below the feed port 8. The cleaning port 9 is convenient for the discharge of flocs, and the opening of the cleaning port 9 is relatively large. A discharge port 10 is provided on the surface of the box body 1, and the discharge port 10 is located on the corresponding surface of the feed port 8.

[0031] As an optional technical solution, a first hole 11 is provided on the surface of the processing barrel 7, and the first hole 11 corresponds to the feed port 8. The first hole 11 is matched with the feed port 8 so that the material can be injected into the interior of the processing barrel 7. A second hole 12 is provided on the surface of the processing barrel 7, and the second hole 12 corresponds to the cleaning port 9. The second hole 12 is matched with the cleaning port 9 so that the flocs inside the processing barrel 7 can be discharged from the box body 1. A third hole 13 is provided on the surface of the processing barrel 7, and the third hole 13 corresponds to the discharge port 10. The third hole 13 is matched with the discharge port 10 so that the treated oilfield fracturing return fluid inside the processing barrel 7 can be discharged.

[0032] Embodiment 2:

[0033] See also Figure 1 , Figure 3 and Figure 5 A device for treating oilfield fracturing return fluid comprises a box 1 whose inner bottom wall is fixedly connected with a driving motor 14. The driving motor 14 is used to accelerate the reaction speed of ozone and oilfield fracturing return fluid. Ozone can use its strong oxidizing property to remove color, turbidity, odor and soluble organic matter in the return fluid, including volatile acids, benzene series and cyclopentane acids, oil, fat, heavy metals, etc. The output end of the driving motor 14 is fixedly connected with a rotating shaft 15. The rotating shaft 15 as a medium can use the force of the driving motor 14 to rotate the treatment barrel 7.

[0034] As an optional technical solution, the rotating shaft 15 is interactively connected internally with a telescopic shaft 16, and the top of the telescopic shaft 16 is fixedly connected to the bottom of the processing barrel 7. The telescopic shaft 16 is convenient for assisting the processing barrel 7 in lifting and lowering activities without causing the drive motor 14 to move.

[0035] As an optional technical solution, an observation screen 20 is provided on the surface of the box 1, which allows staff to observe the internal situation. A control panel 21 is provided on the surface of the box 1, which controls the opening and use of the electronic equipment of the device.

[0036] Working principle: when treating the oilfield fracturing return fluid, the staff first opens the feed port 8, so that the oilfield fracturing return fluid can enter the interior of the treatment barrel 7 through the feed port 8 and the first hole 11. After the injection of the oilfield fracturing return fluid is completed, ozone can be injected into the oilfield fracturing return fluid in the treatment barrel 7 through the hose style, and then the drive motor 14 is turned on, so that the drive motor 14 can drive the treatment barrel 7 to rotate, thereby accelerating the reaction. After the reaction is completed, the hose is pulled out, and then flocculant is injected into the treatment barrel 7 through the feed port 8 and the first hole 11, and then the first electric motor is turned on at the same time. The telescopic rod 2 and the second electric telescopic rod 5 are moved, so as to utilize the first filter layer 4 on the surface of the extrusion plate 3 to extrude and filter the condensed flocs, so that the flocs can be confined and pressed at the bottom of the processing barrel 7, and then the discharge port 10 is unscrewed, so that the oilfield fracturing return fluid can be discharged through the discharge port 10, and the discharged oilfield fracturing return fluid will pass through the second filter plate again for re-filtration when passing through the discharge port 10. After the collection is completed, the cleaning port 9 is opened to discharge the flocs, and at the same time, the outlet filter plate 18 is rotated to displace the outlet filter plate 18 from the sliding groove 17, so that the outlet filter plate 18 can be taken out for cleaning.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An oilfield fracturing flowback fluid processing device, comprising a housing (1), characterized in that: The inner top wall of the box body (1) is fixedly connected to a first electric telescopic rod (2), the output end of the first electric telescopic rod (2) is fixedly connected to an extrusion plate (3), and the interior of the extrusion plate (3) is fixedly connected to a first filter layer (4); A discharge port (10), the discharge port (10) being located on the surface of the box body (1), a sliding groove (17) being provided inside the discharge port (10), an outlet filter plate (18) being slidably connected inside the sliding groove (17), and a second filter layer (19) being fixedly connected inside the outlet filter plate (18).

2. The oilfield fracturing flowback fluid processing device according to claim 1, characterized in that: The inner bottom wall of the box body (1) is fixedly connected to a second electric telescopic rod (5), two groups of the second electric telescopic rod (5) are provided, and the top end of the output end of the second electric telescopic rod (5) is fixedly connected to a support plate (6).

3. The oilfield fracturing flowback fluid processing device according to claim 1, characterized in that: A processing barrel (7) is slidably disposed inside the box body (1), and the processing barrel (7) is located above the support plate (6).

4. The oilfield fracturing flowback fluid processing device according to claim 1, characterized in that: The surface of the box body (1) is provided with a feed port (8), the surface of the box body (1) is provided with a cleaning port (9), and the cleaning port (9) is located below the feed port (8), and the surface of the box body (1) is provided with a discharge port (10), and the discharge port (10) is located on the corresponding surface of the feed port (8).

5. The oilfield fracturing flowback fluid processing device according to claim 3, characterized in that: The surface of the processing barrel (7) is provided with a first hole (11), and the first hole (11) corresponds to the feed port (8); the surface of the processing barrel (7) is provided with a second hole (12), and the second hole (12) corresponds to the cleaning port (9); the surface of the processing barrel (7) is provided with a third hole (13), and the third hole (13) corresponds to the discharge port (10).

6. The oilfield fracturing flowback fluid processing device according to claim 1, characterized in that: The inner bottom wall of the box body (1) is fixedly connected to a driving motor (14), and the output end of the driving motor (14) is fixedly connected to a rotating shaft (15).

7. The oilfield fracturing flowback fluid processing device according to claim 6, characterized in that: The interior of the rotating shaft (15) is slidably connected with a telescopic shaft (16), and the top of the telescopic shaft (16) is fixedly connected to the bottom of the processing barrel (7).

8. The oilfield fracturing flowback fluid processing device according to claim 1, characterized in that: An observation screen (20) is provided on the surface of the box body (1), and a control panel (21) is provided on the surface of the box body (1).

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