CN212198781U - Well-flushing sewage recovery processing device for oil field water injection well - Google Patents

Abstract

The utility model discloses a well-flushing sewage recovery processing device for an oil field water injection well, which comprises a filtering bin, wherein the inner wall of the filtering bin is fixedly connected with a filtering net A, a disc is arranged below the filtering net A, the disc is fixedly connected with the inner wall of the filtering bin, an oil-water separation bin A is arranged below the filtering bin, the inner wall of the oil-water separation bin A is fixedly connected with an oil filter screen, a water leakage plate is arranged below the oil filter screen, the water leakage plate is fixedly connected with the inner wall of the water separation bin A, the upper surface of the oil filter screen is provided with an oil scraping brush; the device filters slag through a filter screen and a disc, and then realizes oil-water separation through an oil filter screen in an oil-water separation bin A and a roller in an oil-water separation bin B, thereby realizing sewage recovery.

Description

Well-flushing sewage recovery processing device for oil field water injection well

Technical Field

The utility model relates to an oil well washs technical field, specifically is a well-flushing sewage recovery processing device for oil field water injection well.

Background

The sum of the reservoirs within the same hydrocarbon producing area under the control of a single geologic structure (or formation) factor. A field may have one or more reservoirs. The oil field is mainly the oil reservoir in the same area, and the gas field is mainly the gas reservoir. According to the geological factors in the area for controlling oil and gas production, oil and gas fields are divided into 3 types: firstly, the method comprises the following steps: a structured oil and gas field. Meaning that the hydrocarbon production area is controlled by a single construction factor, such as wrinkles and faults. II, secondly: stratigraphic fields, the oil-bearing area of a regional anticline or monoclinic formation on the background of formation factors (e.g., unconformity, pinch-out, lithology changes, etc. of the formation). Thirdly, the method comprises the following steps: a composite oil-gas field. The oil and gas producing area is not controlled by single structure or stratum factors, but controlled by multiple geological factors.

The well washing water used for cleaning the existing oil field is generally directly discharged without any treatment, which not only causes serious pollution to the environment, but also wastes a large amount of water resources, therefore, the well washing sewage recovery and treatment device for the water injection well of the oil field is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil field water injection well is with washing well sewage recovery processing device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a well-flushing sewage recovery processing device for an oilfield water injection well comprises a filtering component, an oil-water separation component A and an oil-water separation component B, wherein the filtering component comprises a filtering bin, a filtering screen A and a disc, the oil-water separation component A comprises an oil-water separation bin A, an electric push rod A, an oil scraping brush and a water leakage plate, the oil-water separation component B comprises an oil-water separation bin B, a roller, a ring-shaped sliding rail A and a ring-shaped sliding groove A, the filtering screen A is fixedly connected to the inner wall of the filtering bin, the disc is arranged below the filtering screen A, the oil-water separation bin A is arranged below the filtering bin, the oil filtering screen A is fixedly connected to the inner wall of the oil filtering screen A, a water leakage plate is arranged below the oil filtering screen, the water leakage plate is fixedly connected to the inner wall of the oil-water separation bin A, a through hole is formed in the top of, the handle of scraping the oil brush and electric putter A's push rod fixed connection, the inboard of oil water separating bin B is equipped with the cylinder, cylinder outside bottom fixedly connected with loop type slide rail A, the inboard bottom fixedly connected with loop type spout A of oil water separating bin B, loop type slide rail A and loop type spout A sliding connection.

As further preferable in the present technical solution: the top of the outer side of the filter bin is communicated with a feeding pipe, the inner wall of the filter bin below the filter screen A is fixedly connected with a ring-shaped chute C, the outer wall of the disc is fixedly connected with a ring-shaped slide rail C, the ring-shaped chute C is connected with the ring-shaped slide rail C in a sliding manner, a motor A is arranged below the ring-shaped chute C, an output shaft of the motor A is fixedly connected with a gear A, the inner wall of the filter bin below the ring-shaped chute C is fixedly connected with a gear ring A, the gear ring A is meshed and connected with the gear A, the bottom of the outer side of the filter bin is communicated with a discharge pipeline A, the bottom of the inner side of the filter bin is symmetrically connected with two slag bins by taking the discharge pipeline A as a symmetric axis, the inner wall of the slag bins is fixedly connected with a filter screen B, the bottom of the inner side of the filter bin, the discharging pipeline A is communicated with the top wall of the oil-water separation bin A, the discharging pipeline B is communicated with the top wall of the oil-water separation bin A, the bottom of the outer side of the oil-water separation bin A is communicated with the water outlet pipeline A, the outer side of the oil-water separation bin A is provided with an oil pump, one side of the oil-water separation bin A is provided with a connecting pipeline A, one end of the connecting pipeline A penetrates through a water leakage plate and an oil filter screen, the other end of the connecting pipeline A penetrates through the oil-water separation bin A and is connected with the water inlet end of the oil pump, the water outlet end of the oil pump is fixedly connected with a connecting pipeline B, the connecting pipeline B is communicated with the top wall of the oil-water separation bin B, the outer side of the roller is provided with a gear ring B, the inner side of the oil-water separation bin B is fixedly connected with a motor B, the two ends of the water outlet are fixedly connected with reverse osmosis membranes, an oil outlet pipeline is arranged at the bottom of the outer side of the oil-water separation bin B, the oil outlet pipeline penetrates through the oil-water separation bin B and is communicated with the roller, the bottom of the outer side of the oil-water separation bin B is symmetrically connected with a water outlet pipeline B by taking the oil outlet pipeline as a symmetry axis, and the water outlet pipeline B is communicated with the oil-water separation bin B.

As further preferable in the present technical solution: the utility model discloses a filter, including filter screen A, filter storehouse, brush holder, filter storehouse, filter net A's top is equipped with the brush, the outside of filter storehouse is equipped with electric putter B, the brush holder of brush runs through the outer wall of filter storehouse and electric putter B's push rod fixed connection, filter screen A below is equipped with the shower nozzle, one side of filter storehouse is equipped with the air pump, the output fixedly connected with trachea of air pump, the trachea runs through filter storehouse and connects in the shower nozzle, the outside of filter storehouse is kept away from the air pump and is equipped with discharge line.

As further preferable in the present technical solution: the disc comprises a first area, a second area and a third area, fan blades are welded on the outer side wall of the first area, drain holes are formed in the tops of the first area and the second area, and slag material openings are uniformly formed in the top of the third area.

As further preferable in the present technical solution: the two sides of the slag bin are symmetrically connected with water skis A by taking the discharge pipeline A as a symmetric axis, and the bottom of the inner side of the oil-water separation bin A is symmetrically connected with water skis B by taking the water outlet pipeline A as a symmetric axis.

As further preferable in the present technical solution: and water valves are fixedly connected with the water outlets of the discharge pipeline, the discharge pipeline A, the discharge pipeline B, the water outlet pipeline A, the water outlet pipeline B and the oil outlet pipeline.

As further preferable in the present technical solution: the oil-water separation device is characterized in that a ring-shaped sliding rail B is arranged above the gear ring B and fixedly connected with the roller, a ring-shaped sliding groove B is arranged above the gear ring B and fixedly connected with the inner wall of the oil-water separation bin B, and the ring-shaped sliding rail B is slidably connected with the ring-shaped sliding groove B.

As further preferable in the present technical solution: the outside of motor A is equipped with safety cover A, motor B's the outside is equipped with safety cover B.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of reasonable and simple structure, low in production cost, simple to operate, it is multiple functional, can effectively carry out recovery processing to well-flushing sewage, pour into the dirt from the inlet pipe, filter large granule slag charge through filter screen A, then motor A rotation drive gear A, gear A meshing gear ring A makes the high-speed rotation of disc and produce centrifugal force and drop into the sediment feed bin with the impurity in the sewage from the slag charge mouth, be equipped with filter screen B in the sediment feed bin and filter remaining tiny slag charge, remaining profit flows into water oil separating storehouse A from ejection of compact pipeline B. The remaining oil and water flow to the surface of the water slide plate A from the water discharge hole of the disc and then flow into the oil-water separation bin A from the discharge pipeline A. The oil and water are separated for the first time through the oil filter screen, wherein the water flows to the water slide plate B through the water leakage plate through the oil filter screen and then is discharged from the water outlet pipeline A. The electric push rod A pushes the oil scraping brush to push oil on the oil filter screen to the communication position of the connecting pipeline A and the water leakage plate, and the oil pump pumps the oil out of the connecting pipeline A and pumps the oil into the roller in the oil-water separation bin B through the connecting pipeline B. The motor B in the oil-water separation bin B operates to drive the gear B, the gear B is meshed with the gear ring B to drive the roller to rotate at a high speed, so that oil and water pumped into the roller are linearly converted into high-speed rotation motion to generate centrifugal force, and the oil is discharged from the oil outlet pipeline because the oil is gathered in the central area due to the small centrifugal force. The water is subjected to large centrifugal force, is gathered to the four-wall area of the roller, is discharged into the oil-water separation bin B through a water outlet on the roller and is finally discharged through a water outlet pipeline B.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the disc of the present invention;

fig. 3 is an enlarged view of the structure of the N region in fig. 1 according to the present invention.

In the figure: 1. a filtering bin; 2. an electric push rod B; 3. a brush; 4. an air pump; 5. a gear ring A; 6. a spray head; 7. a filter screen A; 8. a disc; 9. a feed pipe; 10. a discharge conduit; 11. a water valve; 12. a slag bin; 13. a filter screen B; 14. a motor A; 15. a discharge pipeline B; 16. a gear A; 17. a discharge pipeline A; 18. an oil-water separation bin A; 19. an electric push rod A; 20. scraping the oil brush; 21. an oil filter screen; 22. a aquaplane B; 23. a water outlet pipeline A; 24. a protective cover A; 25. a water leakage plate; 26. a through hole; 27. connecting a pipeline A; 28. a water outlet pipeline B; 29. a ring-shaped chute C; 30. an oil outlet pipeline; 31. a ring-shaped slide rail C; 32. a connecting pipeline B; 33. a motor B; 34. an oil-water separation bin B; 35. a ring-shaped slide rail B; 36. a ring-shaped chute B; 37. a reverse osmosis membrane; 38. a water outlet; 39. a gear ring B; 40. a drum; 41. a ring-shaped slide rail A; 42. a ring-shaped chute A; 43. a protective cover B; 44. an oil pump; 45. a gear B; 46. a drain hole; 47. a fan blade; 48. a first region; 49. a slag material port; 50. an air tube; 51. a aquaplane A; 52. a filter assembly; 53. an oil-water separation component A; 54. an oil-water separation component B; 55. a second region; 56. and a third zone.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: a well-flushing sewage recovery processing device for an oilfield water injection well comprises a filter assembly 52, an oil-water separation assembly A53 and an oil-water separation assembly B54, wherein the filter assembly 52 comprises a filter cabin 1, a filter screen A7 and a disc 8, the oil-water separation assembly A53 comprises an oil-water separation cabin A18, an electric push rod A19, an oil scraping brush 20 and a water leakage plate 25, the oil-water separation assembly B54 comprises an oil-water separation cabin B34, a roller 40, an annular slide rail A41 and an annular slide groove A42, the inner wall of the filter cabin 1 is fixedly connected with the filter screen A7, the disc 8 is arranged below the filter screen A7, the oil-water separation cabin A18 is arranged below the filter cabin 1, the inner wall of the oil-water separation cabin A18 is fixedly connected with an oil filter screen 21, the water leakage plate 25 is arranged below the oil filter screen 21, the water leakage plate 25 is fixedly connected with the inner wall of the oil-water separation cabin A18, the top of the water leakage, the handle of the oil scraping brush 20 is fixedly connected with the push rod of the electric push rod A19, the inner side of the oil-water separation bin B34 is provided with a roller 40, the bottom of the outer side of the roller 40 is fixedly connected with a ring-shaped sliding rail A41, the bottom of the inner side of the oil-water separation bin B34 is fixedly connected with a ring-shaped sliding groove A42, and the ring-shaped sliding rail A41 is slidably connected with a ring-shaped sliding groove A42.

In this embodiment, specifically: the top of the outer side of the filter bin 1 is communicated with a feeding pipe 9, the inner wall of the filter bin 1 below a filter screen A7 is fixedly connected with a ring-shaped chute C29, the outer wall of a disc 8 is fixedly connected with a ring-shaped slide rail C31, a ring-shaped chute C29 is in sliding connection with a ring-shaped slide rail C31, a motor A14 is arranged below a ring-shaped chute C29, an output shaft of the motor A14 is fixedly connected with a gear A16, the inner wall of the filter bin 1 below the ring-shaped chute C29 is fixedly connected with a gear ring A5, a gear ring A5 is in meshing connection with a gear A16, the bottom of the outer side of the filter bin 1 is communicated with a discharge pipeline A17, the bottom of the inner side of the filter bin 1 is symmetrically connected with two slag bins 12 by taking the discharge pipeline A17 as a symmetric axis, the inner wall of the slag bin 12 is fixedly connected with a 13, the bottom of the inner side of the filter bin 1 is symmetrically connected with two discharge pipelines B15 by taking the discharge pipeline, the discharge pipeline B15 is communicated with the top wall of the oil-water separation bin A18, the bottom of the outer side of the oil-water separation bin A18 is communicated with the water outlet pipeline A23, the oil pump 44 is arranged on the outer side of the oil-water separation bin A18, a connecting pipeline A27 is arranged on one side of the oil-water separation bin A18, one end of the connecting pipeline A27 penetrates through the water leakage plate 25 and the oil filter screen 21, the other end of the connecting pipeline A27 penetrates through the oil-water separation bin A18 and is connected with the water inlet end of the oil pump 44, the water outlet end of the oil pump 44 is fixedly connected with a connecting pipeline B32, a connecting pipeline B32 is communicated with the top wall of the oil-water separation bin B34, the outer side of the roller 40 is provided with a gear ring B39, the inner side of the oil-water separation bin B34 is fixedly connected with a motor B33, the output end of the motor B33 is provided with a gear B45, the gear B45 is meshed with, the oil outlet pipeline 30 penetrates through the oil-water separation bin B34 and is communicated with the roller 40, the outer bottom of the oil-water separation bin B34 is symmetrically connected with a water outlet pipeline B28 by taking the oil outlet pipeline 30 as a symmetry axis, and the water outlet pipeline B28 is communicated with an oil-water separation bin B34; through setting up various pipelines to communicate each and handle the storehouse, then drive gear wheel through the motor and drive the gear ring and make cylinder 40 rotate and produce centrifugal force and conveniently realize water oil separating.

In this embodiment, specifically: a brush 3 is arranged above the filter screen A7, an electric push rod B2 is arranged on the outer side of the filter bin 1, a brush handle of the brush 3 penetrates through the outer wall of the filter bin 1 and is fixedly connected with a push rod of the electric push rod B2, a spray head 6 is arranged below the filter screen A7, an air pump 4 is arranged on one side of the filter bin 1, an air pipe 50 is fixedly connected with the output end of the air pump 4, the air pipe 50 penetrates through the filter bin 1 and is connected with the spray head 6, a discharge pipeline 10 is arranged on the outer side of the filter bin 1 far away from the air pump 4; the residue in the filter screen can be sprayed out by the air injection of the spray head 6, and then the slag is discharged from the discharge pipeline 10 by the brush head.

In this embodiment, specifically: the disc 8 comprises a first area 48, a second area 55 and a third area 56, fan blades 47 are welded on the outer side wall of the first area 48, water drain holes 46 are formed in the tops of the first area 48 and the second area 55, and slag material openings 49 are uniformly formed in the top of the third area 56; the impurities of the sewage are separated from the water by generating a centrifugal force by the disc 8 at a high speed.

In this embodiment, specifically: the two sides of the slag bin 12 are symmetrically connected with water skips A51 by taking the discharge pipeline A17 as a symmetric axis, and the bottom of the inner side of the oil-water separation bin A18 is symmetrically connected with water skips B22 by taking the water outlet pipeline A23 as a symmetric axis; the water can be correctly flowed into the corresponding pipeline through the water skis.

In this embodiment, specifically: the water outlets of the discharge pipeline 10, the discharge pipeline A17, the discharge pipeline B15, the water outlet pipeline A23, the water outlet pipeline B28 and the oil outlet pipeline 30 are all fixedly connected with a water valve 11; the water is prevented from flowing into the rear treatment chamber when not necessary by the provision of the water valve 11.

In this embodiment, specifically: a ring-shaped sliding rail B35 is arranged above the gear ring B39, a ring-shaped sliding rail B35 is fixedly connected with the roller 40, a ring-shaped sliding groove B36 is arranged above the gear B45, a ring-shaped sliding groove B36 is fixedly connected with the inner wall of the oil-water separation bin B34, and a ring-shaped sliding rail B35 is slidably connected with the ring-shaped sliding groove B36; the rotation of the drum 40 is more stabilized by the sliding of the slide rail and the slide groove.

In this embodiment, specifically: a protective cover A24 is arranged on the outer side of the motor A14, and a protective cover B43 is arranged on the outer side of the motor B33; make the motor can not contact water through setting up the safety cover, prevent the motor short circuit.

Theory of operation or structure, during the use, pour into the dirty material from inlet pipe 9, filter through filter screen A7 and filter large granule slag charge, then motor A14 is rotatory to drive gear A16, gear A16 meshing gear ring A5 makes thereby disc 8 high-speed rotatory produce centrifugal force with the impurity in the sewage from slag charge mouth 49 drop into sediment feed bin 12, be equipped with filter screen B13 in the sediment feed bin 12 and filter remaining tiny slag charge, remaining profit flows into water oil separating bin A18 from ejection of compact pipeline B15. The remaining oil and water flow from the drain hole 46 of the disc 8 to the surface of the water slide a51 and then flow from the discharge pipe a17 into the oil-water separation chamber a 18. The oil and water are first separated by passing through the oil screen 21, wherein the water passes through the oil screen 21, passes through the drain board 25, flows to the water ski B22, and is discharged from the water outlet conduit a 23. The electric push rod A19 pushes the oil scraping brush 20 to push the oil on the oil filter screen 21 to the communication position of the connecting pipeline A27 and the water leakage plate 25, the oil pump 44 pumps the oil out of the connecting pipeline A27 and pumps the oil into the roller 40 in the oil-water separation bin B34 through the connecting pipeline B32, and the model of the oil pump 44 is QBY 80. The motor B33 in the oil-water separation bin B34 operates to drive the gear B45, the gear B45 is meshed with the gear ring B39 to drive the roller 40 to rotate at a high speed, so that oil and water pumped into the roller 40 are linearly converted into high-speed rotation to generate centrifugal force, and the oil is collected in the central area and discharged from the oil outlet pipeline 30 due to small centrifugal force applied to the oil. The water is subjected to high centrifugal force, is gathered to the four-wall area of the roller 40, is discharged into the oil-water separation bin B34 through the water outlet 38 on the roller 40, and is finally discharged through the water outlet pipeline B28.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides an oil field is flushing sewage recovery processing apparatus for water injection well, includes filtering component (52), oil-water separation subassembly A (53) and oil-water separation subassembly B (54), its characterized in that: the filter assembly (52) comprises a filter bin (1), a filter screen A (7) and a disc (8), the oil-water separation assembly A (53) comprises an oil-water separation bin A (18), an electric push rod A (19), an oil scraping brush (20) and a water leakage plate (25), the oil-water separation assembly B (54) comprises an oil-water separation bin B (34), a roller (40), a ring-shaped slide rail A (41) and a ring-shaped slide groove A (42), the inner wall of the filter bin (1) is fixedly connected with the filter screen A (7), the disc (8) is arranged below the filter screen A (7), the oil-water separation bin A (18) is arranged below the filter bin (1), the oil filter screen (21) is fixedly connected with the inner wall of the oil-water separation bin A (18), the water leakage plate (25) is arranged below the oil filter screen (21), and the water leakage plate (25) is fixedly connected with the, through-hole (26) have been seted up at water leakage board (25) top, oil cleaner screen (21) upper surface is equipped with scrapes oil brush (20), the oil water separating bin A (18) outside is equipped with electric putter A (19), the handle of scraping oil brush (20) and the push rod fixed connection of electric putter A (19), the inboard of oil water separating bin B (34) is equipped with cylinder (40), cylinder (40) outside bottom fixedly connected with ring type slide rail A (41), oil water separating bin B (34) inboard bottom fixedly connected with ring type spout A (42), ring type slide rail A (41) and ring type spout A (42) sliding connection.

2. The well-flushing sewage recovery and treatment device for the oilfield water injection well according to claim 1, which is characterized in that: the top and the inlet pipe (9) intercommunication in filtration storehouse (1) outside, filter storehouse (1) inner wall fixedly connected with ring type spout C (29) is crossed to filter screen A (7) below, disc (8) outer wall fixedly connected with ring type slide rail C (31), ring type spout C (29) and ring type slide rail C (31) sliding connection, ring type spout C (29) below is equipped with motor A (14), the output shaft fixedly connected with gear A (16) of motor A (14), filter storehouse (1) inner wall fixedly connected with gear ring A (5) is crossed to ring type spout C (29) below, gear ring A (5) and gear A (16) meshing are connected, filter storehouse (1) outside bottom and ejection of compact pipeline A (17) intercommunication, the bottom of filtering storehouse (1) inboard uses ejection of compact pipeline A (17) to have slag charge storehouse (12) that quantity is two as symmetry axis symmetry connection, the slag bin (12) is fixedly connected with a filter screen B (13) on the inner wall, the bottom of the inner side of the filter bin (1) is symmetrically connected with two discharge pipelines B (15) by taking a discharge pipeline A (17) as a symmetry axis, the discharge pipelines B (15) are communicated with the slag bin (12), the discharge pipelines A (17) are communicated with the top wall of an oil-water separation bin A (18), the discharge pipelines B (15) are communicated with the top wall of the oil-water separation bin A (18), the bottom of the outer side of the oil-water separation bin A (18) is communicated with a water outlet pipeline A (23), an oil pump (44) is arranged on the outer side of the oil-water separation bin A (18), a connecting pipeline A (27) is arranged on one side of the oil-water separation bin A (18), one end of the connecting pipeline A (27) penetrates through a water leakage plate (25) and an oil filter screen (21), and the other end of the connecting pipeline A (27) penetrates through the oil-water separation bin A (18) and, the water outlet end of the oil pump (44) is fixedly connected with a connecting pipeline B (32), the connecting pipeline B (32) is communicated with the top wall of the oil-water separation bin B (34), a gear ring B (39) is arranged on the outer side of the roller (40), a motor B (33) is fixedly connected on the inner side of the oil-water separation bin B (34), a gear B (45) is arranged at the output end of the motor B (33), the gear B (45) is meshed with the gear ring B (39) to be connected, water outlets (38) are uniformly formed in the wall of the roller (40), reverse osmosis membranes (37) are fixedly connected at two ends of each water outlet (38), an oil outlet pipeline (30) is arranged at the bottom of the outer side of the oil-water separation bin B (34), the oil outlet pipeline (30) penetrates through the oil-water separation bin B (34) to be communicated with the roller (40), and the bottom of the outer side of the oil-water separation bin B (34, the water outlet pipeline B (28) is communicated with the oil-water separation bin B (34).

3. The well-flushing sewage recovery and treatment device for the oilfield water injection well according to claim 1, which is characterized in that: the top of filter screen A (7) is equipped with brush (3), the outside of filtering storehouse (1) is equipped with electric putter B (2), the brush holder of brush (3) runs through the outer wall of filtering storehouse (1) and the push rod fixed connection of electric putter B (2), filter screen A (7) below is equipped with shower nozzle (6), one side of filtering storehouse (1) is equipped with air pump (4), the output end fixedly connected with trachea (50) of air pump (4), trachea (50) run through and filter storehouse (1) and connect in shower nozzle (6), it is equipped with discharge pipe way (10) to keep away from air pump (4) in the outside of filtering storehouse (1), discharge pipe way (10) and filter storehouse (1) intercommunication.

4. The well-flushing sewage recovery and treatment device for the oilfield water injection well according to claim 1, which is characterized in that: disc (8) include first district (48), second district (55) and third district (56), welding of first district (48) lateral wall has flabellum (47), wash port (46) have all been seted up at first district (48) and second district (55) top, slag discharge mouth (49) have evenly been seted up at third district (56) top.

5. The well-flushing sewage recovery and treatment device for the oilfield water injection well according to claim 2, characterized in that: the slag bin (12) is connected with water skis A (51) on two sides by taking the discharge pipeline A (17) as symmetry axis symmetry, and the water skis B (22) are connected on the bottom of the inner side of the oil-water separation bin A (18) by taking the water outlet pipeline A (23) as symmetry axis symmetry.

6. The well-flushing sewage recovery and treatment device for the oilfield water injection well according to claim 3, characterized in that: and water outlets of the discharge pipeline (10), the discharge pipeline A (17), the discharge pipeline B (15), the water outlet pipeline A (23), the water outlet pipeline B (28) and the oil outlet pipeline (30) are fixedly connected with water valves (11).

7. The well-flushing sewage recovery and treatment device for the oilfield water injection well according to claim 2, characterized in that: gear ring B (39) top is equipped with ring type slide rail B (35), ring type slide rail B (35) and cylinder (40) fixed connection, the top of gear B (45) is equipped with ring type spout B (36), ring type spout B (36) fixed connection is in the inner wall of oil-water separation storehouse B (34), ring type slide rail B (35) and ring type spout B (36) sliding connection.

8. The well-flushing sewage recovery and treatment device for the oilfield water injection well according to claim 2, characterized in that: the outside of motor A (14) is equipped with safety cover A (24), the outside of motor B (33) is equipped with safety cover B (43).