Oil recovery reinjection water treatment device

Abstract

The utility model discloses an oil extraction reinjection water treatment device which comprises a bottom plate, a circular treatment box which is obliquely arranged is fixedly installed at the top of the bottom plate, an oil extraction reinjection water adding pipe is fixedly communicated with the right side of the top of the circular treatment box, an L-shaped pipe is fixedly communicated with the left side of the bottom of the circular treatment box, and a liquid discharging valve is fixedly communicated with the right end of the L-shaped pipe; a funnel-shaped stainless steel filter screen is fixedly mounted in the circular treatment box, an inner concave part is integrally formed in the middle of the bottom of the funnel-shaped stainless steel filter screen, a guide sleeve is fixedly embedded in the inner wall of the top of the circular treatment box, and a conveying pipe with the top of a plugging structure is slidably arranged in the guide sleeve in a sleeving manner. By arranging a series of structures, oil extraction reinjection water can be conveniently and rapidly subjected to solid-liquid separation, solid residues can be effectively and intensively collected, the solid residues can be conveniently, automatically and stably discharged in real time during filtering, workers do not need to independently stop the machine to take residues subsequently, time and labor are saved, the working efficiency and the automation degree of residue removal are improved, and the use of the workers is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of oilfield reinjection water treatment equipment, specifically an oilfield reinjection water treatment device. Background Technology

[0002] To improve oil recovery, a large amount of water needs to be reinjected into the oil well. At the same time, formation water is also generated during the oil and gas production process. In order to obtain qualified oil and gas products, the formation water and the injected water need to be separated from the oil and gas. The water produced by separation still contains a certain amount of oil, gas and other solid or liquid impurities, which is called oily wastewater. This oily wastewater needs to be filtered and discharged back into the ground. Therefore, the treatment of oily wastewater is also called "reinjection water".

[0003] A search revealed that CN216305877U discloses an oilfield reinjection water treatment device, comprising a conical buffer platform and a fixed frame for fixing the buffer platform. An oil hopper is fixedly installed on the buffer platform. The conical surface of the buffer platform has mesh openings, and multiple buffer plates are arranged on the conical surface of the buffer platform in an alternating pattern. A filter screen is installed inside the buffer platform and connected to the mesh openings. This filter screen, in conjunction with the buffer plates, initially slows down and filters the reinjection water in the oil hopper. After slowing down, the reinjection water on the buffer platform flows into a buffer support inserted at the bottom of the fixed frame for secondary slowing down and filtration. This oilfield reinjection water treatment device uses buffer plates on the buffer platform, arranged in an alternating pattern, for initial slowing down, combined with the filter screen inserted inside the buffer platform for initial slowing down and filtration, and then performs secondary slowing down and filtration on the buffer support inserted at the bottom of the fixed frame.

[0004] The aforementioned oilfield reinjection water treatment device, through the combination of buffer plates and filter screens, can buffer and decelerate the reinjection water and filter impurities. However, it still has the following shortcomings: 1. The method of directly concentrating the filtered solids inside the device can easily cause internal blockage as the solids accumulate and exceed the filtration area. It cannot automatically and stably discharge the solids in real time during filtration, requiring personnel to remove the solids separately afterward, resulting in an unsatisfactory degree of automation in the cleaning process. In view of this, this application proposes an oilfield reinjection water treatment device to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an oilfield reinjection water treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oil recovery water treatment device, including a base plate, an inclined circular treatment box fixedly installed on the top of the base plate, an oil recovery water addition pipe fixedly connected to the top right side of the circular treatment box, an L-shaped pipe fixedly connected to the bottom left side of the circular treatment box, and a drain valve fixedly connected to the right end of the L-shaped pipe.

[0007] A funnel-shaped stainless steel filter screen is fixedly installed inside the circular processing box. The bottom center of the funnel-shaped stainless steel filter screen has an integrally formed concave portion. A guide sleeve is embedded and fixedly installed on the top inner wall of the circular processing box. A conveying pipe with a sealed top is slidably fitted inside the guide sleeve. A slag discharge pipe located above the circular processing box is fixedly connected to the top left side of the conveying pipe. The same slag conveying assembly is rotatably fitted between the top inner wall of the conveying pipe and the bottom inner wall of the concave portion. A rotary drive assembly with an output shaft fixedly connected to the slag conveying assembly is fixedly installed at the bottom of the circular processing box. A timed lifting assembly fixedly connected to the top right side of the conveying pipe is fixedly installed on the top right side of the circular processing box. The funnel-shaped stainless steel filter screen is used to filter and intercept solids inside the oilfield reinjection water after it is added. The inner inclined surface of the screen guides the solids to slide down and collect them in the concave part. The swirl drive assembly is used to drive the slag conveying assembly to rotate. The slag conveying assembly is used to transport the collected solids upward into the conveying pipe during rotation. After being conveyed upward, the solids are automatically discharged outward through the slag discharge pipe. The timed lifting assembly is used to drive the conveying pipe to move up and down at regular intervals. When the conveying pipe moves down, it approaches the inner side of the funnel-shaped stainless steel filter screen to allow the solids to be transported upward better. When the conveying pipe moves up, it creates a larger space with the inner side of the funnel-shaped stainless steel filter screen, allowing the solids to continue to slide down and collect in the concave part.

[0008] Preferably, the slag conveying assembly includes a rotating shaft rotatably embedded in the inner wall of the bottom of the concave portion, a spiral conveying blade fixedly installed on the outer side of the rotating shaft, the spiral conveying blade being movably sleeved in the conveying pipe and the concave portion, and a smooth sleeve rotatably embedded in the inner wall of the top of the conveying pipe, the smooth sleeve being slidably sleeved on the rotating shaft.

[0009] Preferably, the rotary drive assembly includes a U-shaped plate fixedly installed at the bottom of the circular processing box, and a drive motor with an output shaft fixedly connected to the bottom end of the rotating shaft is fixedly installed at the bottom of the U-shaped plate.

[0010] Preferably, the timed lifting assembly includes an electric push rod fixedly installed on the top of the circular processing box, a connecting seat fixedly connected between the extended end of the electric push rod and the top right side of the conveying pipe, and a timer controller fixedly and electrically connected to the front side of the electric push rod.

[0011] Preferably, the bottom end of the conveying pipe is located inside the funnel-shaped stainless steel filter screen and does not contact the inner side of the funnel-shaped stainless steel filter screen.

[0012] Preferably, four support rods are fixedly connected in a rectangular shape between the top of the base plate and the bottom of the circular processing box.

[0013] Preferably, waterproof vibrators are fixedly connected to both sides of the bottom of the funnel-shaped stainless steel filter screen. The waterproof vibrators are used to transmit the hard vibration force to the funnel-shaped stainless steel filter screen when it is turned on. When the funnel-shaped stainless steel filter screen is vibrated, it can effectively guide the solid slag to slide into the concave part in conjunction with its inner inclined surface, thereby improving the filtration and slag collection effect.

[0014] Preferably, a circular through hole is provided on the bottom inner wall of the circular processing box, and two sealed bearings are fixedly fitted inside the circular through hole, with the inner ring of the sealed bearings fixedly fitted to the outer side of the rotating shaft.

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

[0016] 1. By combining the set circular treatment box, funnel-shaped stainless steel filter screen, L-shaped pipe, drain valve and waterproof vibrator, it can quickly separate solid and liquid in oil production reinjection water and effectively collect solid residue. By collecting solid residue in the concave part in the middle, the inner slope of the funnel-shaped stainless steel filter screen can perform long-term and stable filtration.

[0017] 2. Through the coordinated use of the slag conveying components, swirl drive components, timed lifting components, conveying pipes, guide sleeves, and slag discharge pipes, solid slag can be automatically and stably discharged in real time during filtration, eliminating the need for personnel to stop the machine separately to remove slag, saving time and effort, and improving work efficiency and the degree of automation in slag removal.

[0018] This utility model, through a series of structures, facilitates rapid solid-liquid separation of oilfield reinjection water and effective centralized collection of solid slag. It also facilitates real-time automatic and stable discharge of solid slag during filtration, eliminating the need for subsequent manual shutdown and slag removal. This saves time and labor, improves work efficiency and the degree of automation in slag removal, and is convenient for personnel to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an oil recovery and reinjection water treatment device proposed in this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the right-side view structure;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of an oil recovery and reinjection water treatment device proposed in this utility model;

[0022] Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram.

[0023] In the diagram: 1. Base plate; 2. Circular processing box; 3. Oil recovery water addition pipe; 4. L-shaped pipe; 5. Funnel-shaped stainless steel filter screen; 501. Concave part; 6. Waterproof vibrator; 7. Conveying pipe; 8. Slag discharge pipe; 9. Rotating shaft; 10. Spiral conveyor blade; 11. Sliding sleeve; 12. U-shaped plate; 13. Drive motor; 14. Electric push rod; 15. Timer controller; 16. Guide sleeve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 4 As shown, the oil recovery water treatment device proposed in this embodiment includes a base plate 1. An inclined circular treatment box 2 is fixedly installed on the top of the base plate 1. Four support rods are fixedly connected in a rectangle between the top of the base plate 1 and the bottom of the circular treatment box 2, which serves to fix and support the circular treatment box 2. An oil recovery water addition pipe 3 is fixedly connected to the top right side of the circular treatment box 2, and an L-shaped pipe 4 is fixedly connected to the bottom left side of the circular treatment box 2. A drain valve is fixedly connected to the right end of the L-shaped pipe 4.

[0026] A funnel-shaped stainless steel filter screen 5 is fixedly installed inside the circular treatment box 2. A recessed portion 501 is integrally formed in the center of the bottom of the funnel-shaped stainless steel filter screen 5. A guide sleeve 16 is embedded and fixedly installed on the inner top wall of the circular treatment box 2. An embedding hole is formed on the inner top wall of the circular treatment box 2, which is fixedly connected to the outer side of the guide sleeve 16. A conveying pipe 7 with a sealed top is slidably fitted inside the guide sleeve 16. A slag discharge pipe 8 located above the circular treatment box 2 is fixedly connected to the top left side of the conveying pipe 7. The same slag conveying component is rotatably embedded between the inner top wall of the conveying pipe 7 and the inner bottom wall of the recessed portion 501. A rotary drive component with an output shaft fixedly connected to the slag conveying component is fixedly installed at the bottom of the circular treatment box 2. A timed lifting component fixedly connected to the top right side of the conveying pipe 7 is fixedly installed on the top right side of the circular treatment box 2. The bottom end of the conveying pipe 7 is located inside the funnel-shaped stainless steel filter screen 5 and does not contact the inner side of the funnel-shaped stainless steel filter screen 5. Anti-fouling devices are fixedly connected to both sides of the bottom of the funnel-shaped stainless steel filter screen 5. The water vibrator 6; the funnel-shaped stainless steel filter screen 5 is used to filter and intercept the solids inside after the oil recovery water is added, and the solids are slid down and collected into the concave part 501 by its inner inclined surface. The waterproof vibrator 6 is used to transmit the hard vibration force to the funnel-shaped stainless steel filter screen 5 when it is turned on. When the funnel-shaped stainless steel filter screen 5 vibrates hard, it can effectively guide the solids to slide down into the concave part 501 by its inner inclined surface, thereby improving the filtration and slag collection effect. The rotary drive component is used to drive the slag conveying component to rotate. The slag conveying component is used to convey the collected solids upward into the conveying pipe 7 when rotating. After being conveyed upward, the solids are automatically discharged outward through the slag discharge pipe 8. The timed lifting component is used to drive the conveying pipe 7 to move up and down at timed intervals. When the conveying pipe 7 moves down, it approaches the inner side of the funnel-shaped stainless steel filter screen 5 to allow the solids to be conveyed upward better. When the conveying pipe 7 moves up, it creates a larger space with the inner side of the funnel-shaped stainless steel filter screen 5 so that the solids can continue to slide down and be concentrated in the concave part 501.

[0027] Specifically, the slag conveying assembly includes a rotating shaft 9 rotatably fitted onto the inner wall of the bottom of the recess 501. A first circular hole is formed on the inner wall of the bottom of the recess 501, and a first bearing is fixedly fitted inside the first circular hole. The inner ring of the first bearing is fixedly fitted onto the outer side of the rotating shaft 9, thus achieving the effect of rotating the rotating shaft 9. A spiral conveying blade 10 is fixedly installed on the outer side of the rotating shaft 9. The spiral conveying blade 10 is movably fitted into the conveying pipe 7 and the recess 501. A smooth sleeve 11 is rotatably fitted onto the inner wall of the top of the conveying pipe 7. A second circular hole is formed on the inner wall of the top of the conveying pipe 7, and a second bearing is fixedly fitted inside the second circular hole. The inner ring of the second bearing is fixedly fitted onto the outer side of the smooth sleeve 11, thus achieving the effect of rotating the spiral sleeve 11. The effect of rotating the sliding sleeve 11 is to reduce the hard grinding phenomenon that occurs when the rotating shaft 9 rotates by utilizing the rotatable nature of the sliding sleeve 11. The sliding sleeve 11 is slidably fitted on the rotating shaft 9. A circular through hole is opened on the bottom inner wall of the circular treatment box 2. Two sealed bearings are fixedly fitted in the circular through hole. The inner ring of the sealed bearing is fixedly fitted with the outer side of the rotating shaft 9, which achieves the effect of rotating the rotating shaft 9. The rotating shaft 9, the spiral conveyor blade 10 and the sliding sleeve 11 are designed to cooperate. When the rotating shaft 9 rotates, it will drive the spiral conveyor blade 10 to rotate. When the spiral conveyor blade 10 rotates, it will transport the solid slag concentrated in the concave part 501 upward to the conveying pipe 7. When the rotating shaft 9 rotates, it will also drive the sliding sleeve 11 to rotate by friction.

[0028] Furthermore, the rotary drive assembly includes a U-shaped plate 12 fixedly installed at the bottom of the circular processing box 2, and a drive motor 13 with an output shaft fixedly connected to the bottom end of the rotating shaft 9 is fixedly installed at the bottom of the U-shaped plate 12; the U-shaped plate 12 and the drive motor 13 cooperate to drive the rotating shaft 9 to rotate.

[0029] Furthermore, the timed lifting assembly includes an electric push rod 14 fixedly installed on the top of the circular processing box 2. A connecting seat is fixedly connected between the extended end of the electric push rod 14 and the top right side of the conveying pipe 7. A timer controller 15 is fixedly and electrically connected to the front side of the electric push rod 14. The electric push rod 14, the timer controller 15, and the connecting seat cooperate to control the reverse opening and closing time and interval of the electric push rod 14 by pre-setting the timer controller 15. The interval from reverse start to forward start is set to five seconds, and the interval from forward start to the next reverse start is... The time interval is ten seconds. The timer controller 15 controls the electric push rod 14 to start in reverse at regular intervals. The electric push rod 14 drives the conveying pipe 7 to move up and down through the connecting seat. The conveying pipe 7 drives the circular sleeve 11 to slide up and down on the rotating shaft 9. When the conveying pipe 7 moves down, it approaches the inner side of the funnel-shaped stainless steel filter screen 5 to better convey the solid slag upward. When the conveying pipe 7 moves up, it creates a larger space with the inner side of the funnel-shaped stainless steel filter screen 5 so that the solid slag can continue to slide down and concentrate in the concave part 501. This cycle is repeated to achieve the effect of effectively and automatically collecting and discharging slag.

[0030] The usage method of this embodiment is as follows: When in use, the oil reinjection water enters the circular treatment tank 2 through the oil reinjection water addition pipe 3. The funnel-shaped stainless steel filter screen 5 filters and intercepts the solid residue in the oil reinjection water to its inner side, while the liquid flows downward into the lower part of the circular treatment tank 2 and is discharged through the L-shaped pipe 4 and the drain valve in sequence. The two waterproof vibrators 6 are turned on to make them vibrate and transmit the hard vibration force to the funnel-shaped stainless steel filter screen 5. When the funnel-shaped stainless steel filter screen 5 vibrates hard, it cooperates with its inner inclined surface to effectively guide the solid residue to slide into the concave part 501, so as to achieve the effect of rapid separation of solid and liquid and effective collection of solid residue.

[0031] Start the drive motor 13 to drive the rotating shaft 9 to rotate. The rotating shaft 9 drives the spiral conveyor blade 10 to rotate. When the spiral conveyor blade 10 rotates, it conveys the solid slag concentrated in the concave part 501 upward to the conveying pipe 7. After being conveyed upward, the solid slag is automatically discharged outward through the slag discharge pipe 8. When the rotating shaft 9 rotates, it also drives the smooth sleeve 11 to rotate, so as to achieve the effect of automatically discharging the solid slag in real time during filtration.

[0032] The timer controller 15 is used to pre-set the opening and closing time and interval of the electric push rod 14 in both directions. The interval between the reverse start and the forward start is set to five seconds, and the interval between the forward start and the next reverse start is ten seconds. The timer controller 15 controls the electric push rod 14 to start in both directions at timed intervals. The electric push rod 14 drives the conveying pipe 7 to move up and down through the connecting seat. The conveying pipe 7 drives the sliding sleeve 11 to slide up and down on the rotating shaft 9. When the conveying pipe 7 moves down, it approaches the inner side of the funnel-shaped stainless steel filter screen 5 to better convey the solid slag upward. When the conveying pipe 7 moves up, it creates a larger space with the inner side of the funnel-shaped stainless steel filter screen 5, allowing the solid slag to continue to slide down and concentrate in the concave part 501. This cycle is repeated to achieve effective, automatic and stable slag collection and discharge. It achieves the effect of real-time automatic and stable discharge of solid slag during filtration, eliminating the need for personnel to stop the machine and remove slag later. This saves time and effort, improves work efficiency and the degree of automation of slag removal, and is convenient for personnel to use.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An oil production reinjection water treatment apparatus comprising a base plate (1), characterised in that: The top of the bottom plate (1) is fixedly installed with a circular processing box (2) arranged obliquely, the top right side of the circular processing box (2) is communicated and fixedly provided with an oil production reinjection water adding pipe (3), the bottom left side of the circular processing box (2) is communicated and fixedly provided with an L-shaped pipe (4), and the right end of the L-shaped pipe (4) is communicated and fixedly provided with a liquid discharge valve. The circular processing box (2) is fixedly installed with a funnel-shaped stainless steel filter screen (5), the bottom middle part of the funnel-shaped stainless steel filter screen (5) is integrally provided with a concave part (501), the top inner wall of the circular processing box (2) is embedded and fixedly provided with a guide sleeve (16), the guide sleeve (16) is slidably sleeved with a conveying pipe (7) with a top blocking structure, the left side top of the conveying pipe (7) is communicated and fixedly provided with a slag discharge pipe (8) located above the circular processing box (2), the top inner wall of the conveying pipe (7) and the bottom inner wall of the concave part (501) are rotatably embedded with the same slag conveying assembly, the bottom of the circular processing box (2) is fixedly installed with a rotary drive assembly with an output shaft fixedly connected with the slag conveying assembly, and the top right side of the circular processing box (2) is fixedly installed with a timing descending and ascending assembly fixedly connected with the right side top of the conveying pipe (7).

2. The oilfield produced water reinjection treatment apparatus of claim 1, wherein: The slag conveying assembly comprises a rotating shaft (9) rotatably embedded on the bottom inner wall of the concave part (501), and the outer side of the rotating shaft (9) is fixedly installed with a spiral conveying blade (10) which is movably sleeved in the conveying pipe (7) and the concave part (501), and the top inner wall of the conveying pipe (7) is rotatably embedded with a circular sliding sleeve (11) which is slidably sleeved on the rotating shaft (9).

3. An oilfield produced water treatment apparatus as claimed in claim 2, wherein: The rotary drive assembly comprises a U-shaped plate (12) fixedly installed at the bottom of the circular processing box (2), and the bottom of the U-shaped plate (12) is fixedly installed with a drive motor (13) with an output shaft fixedly connected with the bottom end of the rotating shaft (9).

4. The oilfield produced water reinjection treatment apparatus of claim 1, wherein: The timing descending and ascending assembly comprises an electric push rod (14) fixedly installed at the top of the circular processing box (2), a connecting seat is fixedly connected between the extending end of the electric push rod (14) and the right side top of the conveying pipe (7), and a timing controller (15) is fixedly and electrically connected to the front side of the electric push rod (14).

5. The oilfield produced water reinjection treatment apparatus of claim 1, wherein: The bottom end of the conveying pipe (7) is located in the funnel-shaped stainless steel filter screen (5) and does not contact the inner side of the funnel-shaped stainless steel filter screen (5).

6. The oilfield produced water reinjection treatment system of claim 1, wherein: Four supporting rods are fixedly connected in a rectangular shape between the top of the bottom plate (1) and the bottom of the circular processing box (2).

7. The oilfield produced water reinjection treatment system of claim 1, wherein: The bottom sides of the funnel-shaped stainless steel filter screen (5) are fixedly connected with waterproof vibration preventers (6).

8. The oilfield produced water reinjection treatment apparatus of claim 2, wherein: A circular perforation is formed in the bottom inner wall of the circular processing box (2), two sealing bearings are fixedly sleeved in the circular perforation, and the inner ring of the sealing bearing is fixedly sleeved with the outer side of the rotating shaft (9).

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