阅读说明：本技术 一种井内驱动的采油电潜螺杆泵 (Oil production electric submersible screw pump driven in well ) 是由 张家轩 于 2021-01-13 设计创作，主要内容包括：本发明涉及采油领域,尤其涉及一种井内驱动的采油电潜螺杆泵,包括一号油管,所述一号油管的外侧靠近上边缘处镶嵌有集油件,所述一号油管的下端贴合安装有二号油管,所述一号油管与二号油管之间设置有连固件,所述二号油管的内部靠近下边缘处镶嵌有采油件,所述二号油管的下端面安装有滤油件,所述滤油件与采油件相连接,所述集油件的下端面边缘处延伸有四组支撑件。本发明能够提高使用时的方便度,能够提高采油质量,且能够提高采油时的稳定性。(The invention relates to the field of oil extraction, in particular to an oil extraction electric submersible screw pump driven in a well, which comprises a first oil pipe, wherein an oil collecting piece is embedded at the position, close to the upper edge, of the outer side of the first oil pipe, a second oil pipe is attached to the lower end of the first oil pipe, a connecting piece is arranged between the first oil pipe and the second oil pipe, an oil extracting piece is embedded at the position, close to the lower edge, of the inner part of the second oil pipe, an oil filtering piece is installed on the lower end face of the second oil pipe, the oil filtering piece is connected with the oil extracting piece, and four groups of supporting pieces extend from the edge of the lower end face of the. The invention can improve the convenience in use, improve the oil extraction quality and improve the stability in oil extraction.)

1. The utility model provides a driven oil recovery electric submersible screw pump in well, includes oil pipe (2), its characterized in that: the outside of an oil pipe (2) is close to the top edge department and inlays and have an oil collecting piece, No. two oil pipe (3) are installed in the lower extreme laminating of an oil pipe (2), be provided with even firmware between an oil pipe (2) and No. two oil pipe (3), the inside of No. two oil pipe (3) is close to the bottom edge department and inlays and have an oil recovery piece, the oil strain piece is installed to the lower terminal surface of No. two oil pipe (3), the oil strain piece is connected with the oil recovery piece, the lower terminal surface edge of an oil collecting piece extends and has four group support piece.

2. The pump of claim 1, wherein: the oil collecting piece is including inlaying oil catch bowl (1) that is close to the top edge department in the outside of oil pipe (2), under same plumb line the up end of oil pipe (2) is higher than the inside bottom surface of oil catch bowl (1), the preceding terminal surface of oil catch bowl (1) is close to the bottom edge department and runs through to inlay and has oil extraction pipe (4), the up end of oil extraction pipe (4) runs through to inlay and has control valve body (5).

3. The pump of claim 1, wherein: link the firmware including rotating swivel (33) of installing in the outside top edge department of No. two oil pipe (3), the outside bottom edge department of No. one oil pipe (2) inlays and has fixed slot ring (34), the up end laminating of swivel (33) is in the lower terminal surface of fixed slot ring (34), the upper end of swivel (33) extends and has restricted piece (37), restricted piece (37) run through the inside of being fixed in fixed slot ring (34), be provided with the rubber pad between the up end of No. two oil pipe (3) and the lower terminal surface of No. one oil pipe (2).

4. A downhole driven oil recovery electric submersible screw pump according to claim 3, wherein: the lower end face of the fixed groove ring (34) is provided with a through groove (35), the lower end face of the fixed groove ring (34) is provided with a limiting groove (36), the limiting groove (36) is communicated with the through groove (35), the outer surface of the limiting block (37) is attached to the inner outer surface of the limiting groove (36), the upper end face of the fixed groove ring (34) is embedded with a sealing frame (38) in a penetrating manner, the upper end face of the sealing frame (38) is attached with a bearing plate (39), the middle part of the lower end face of the bearing plate (39) extends to form a guide pillar (40), the guide pillar (40) and the bearing plate (39) are integrally formed, the guide pillar (40) penetrates through the sealing frame (38), the end part of the guide pillar (40) extends to form a guide plate (41), the guide plate (41) is attached to and slidably mounted in the sealing frame (38), and the lower end face of the guide plate (41) extends to form a positioning, the oil pipe assembly is characterized in that the positioning lug (42) penetrates through the inner bottom surface of the sealing frame (38) in a sliding mode, the positioning lug (42) penetrates through the upper end surface of the limiting block (37) in a sliding mode, the positioning lug (42) and the guide plate (41) are integrally formed, a return spring (43) is wound on the outer side of the guide post (40), the return spring (43) is located between the inner top surface of the sealing frame (38) and the upper end surface of the guide plate (41), a connecting bearing (32) is embedded in the upper edge of the outer side of the second oil pipe (3), and the connecting bearing (32) penetrates and is embedded in the rotating ring (33).

5. The pump of claim 1, wherein: the oil recovery piece is including extending fixed frame (23) in the inner wall department of No. two oil pipe (3), the tip fixed mounting of fixed frame (23) has submersible motor (22), the output of submersible motor (22) is connected with screw pump (24), screw pump (24) are inlayed in the inner wall of No. two oil pipe (3).

6. A downhole driven oil recovery electric submersible screw pump according to claim 5, wherein: the oil filter comprises a sealing sliding groove (28) arranged on the lower end face of a second oil pipe (3), a sealing convex ring (27) is arranged in the sealing sliding groove (28) in a sliding mode, a connecting ring (26) extends from the lower end face of the sealing convex ring (27), the connecting ring (26) and the sealing convex ring (27) are integrally formed, a filter screen (25) is embedded into the lower end of the connecting ring (26), the cross section of the filter screen (25) is in a V shape, a bearing body (31) is embedded into the middle of the lower end face of the filter screen (25) in a penetrating mode, the output end of the screw pump (24) is embedded into the bearing body (31) in a penetrating mode, a cleaning rod (30) is embedded into the output end of the screw pump (24), the cleaning rod (30) is attached to the lower end face of the filter screen (25), the side face of the cleaning rod (30) is arranged to be an inclined face in an opening mode, and a pushing spring (, the lower end part of the pushing spring (29) is fixedly connected with the upper end surface of the sealing convex ring (27), and the cross section of the sealing convex ring (27) is T-shaped.

7. The pump of claim 1, wherein: the support comprises a U-shaped groove frame (7) extending at the edge of the lower end face of the oil collecting groove (1), the front end face and the rear end face of the interior of the U-shaped groove frame (7) are embedded with bearing rods (8) in a penetrating manner, the outer side of each bearing rod (8) is attached with a connecting convex plate (10), the lower end of each connecting convex plate (10) extends with a supporting seat (6), the outer side of each bearing rod (8) is embedded with a fixing plate (9), the front end face of each fixing plate (9) is attached to the rear end face of each connecting convex plate (10) in a fitting manner, the front end face of the U-shaped groove frame (7) is slidably and penetratingly provided with a reinforcing column (11), the end part of each reinforcing column (11) is embedded with a limiting plate (13), the side face of each limiting plate (13) extends with a shifting sheet (15), each bearing rod (8) slidably penetrates through the interior of each limiting plate (13), and the rear end face of each limiting plate (13), the outer side of the reinforcing column (11) is wound with a spring body (12), the spring body (12) is located between the front end face of the inside of the U-shaped groove frame (7) and the front end face of the limiting plate (13), a plurality of groups of fixing convex teeth (14) extend from the rear end face of the limiting plate (13), the plurality of groups of fixing convex teeth (14) are arranged in an annular array mode by taking the axial lead of the bearing rod (8) as the circle center, a plurality of groups of tooth grooves are formed in the front end face of the connecting convex plate (10), and the plurality of groups of fixing convex teeth (14) penetrate through and are attached to the inside of the plurality of groups of tooth grooves.

8. The pump of claim 7, wherein: a groove (16) is formed in the side surface of the supporting seat (6), two groups of fixed cylinders (20) are respectively embedded at the lower edges of the front end surface and the rear end surface in the groove (16) in a penetrating manner, rotating rods (19) are respectively installed in the two groups of fixed cylinders (20) in a fitting manner, a seat plate (17) is embedded on the outer side of the rotating rod (19), the seat plate (17) is positioned in the groove (16), a plurality of groups of reinforced conical columns (18) extend from the side surface of the seat plate (17) in a linear array, two groups of fixing bolts (21) are screwed through the side surface of the supporting seat (6) close to the lower edge, one group of the fixing bolts (21) penetrates and is screwed on the side surface of one group of the fixing cylinders (20), the other group of the fixing bolts (21) penetrates and is screwed on the side surface of the other group of the fixing cylinders (20), the end part of the fixing bolt (21) is pressed on the outer surface of the rotating rod (19).

Technical Field

The invention relates to the field of oil extraction, in particular to an oil extraction electric submersible screw pump driven in a well.

Background

Oil recovery engineering is a general term for various engineering technical measures taken on an oil reservoir through a production well and an injection well according to development targets in the oil field exploitation process. As a comprehensive application subject, the theory, the engineering design method and the implementation technology of various engineering technical measures which can economically and effectively act on an oil reservoir to improve the yield of an oil well and the recovery ratio of crude oil are researched. In the oil extraction process, an oil well is firstly arranged on the surface of the soil, crude oil is pumped out through the electric submersible screw pump and conveyed to the ground through an oil pipe, however, the existing oil extraction electric submersible screw pump is not convenient enough in use, the oil extraction quality is low, and the oil extraction is not stable enough.

Disclosure of Invention

The invention aims to solve the defects in the background technology and provides a well-driven oil production electric submersible screw pump.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the utility model provides an in-well driven oil recovery electric submersible screw pump, includes oil pipe No. one, the outside of oil pipe is close to the upper edge department and inlays and have an oil collecting piece, No. two oil pipe are installed in the laminating of oil pipe's lower extreme, be provided with the even firmware between oil pipe and No. two oil pipe, No. two oil pipe's inside is close to the lower edge department and inlays and have an oil recovery piece, oil strain piece is installed to No. two oil pipe's lower terminal surface, oil strain piece is connected with the oil recovery piece, the lower terminal surface edge of oil collecting piece extends there are four group support piece.

Preferably, the oil collecting piece is including inlaying the oil trap that is close to the top edge department in oil pipe's the outside, under same plumb line oil pipe's up end is higher than the inside bottom surface of oil trap, the preceding terminal surface of oil trap is close to lower edge department and is run through to inlay and have the oil extraction pipe, the up end of oil extraction pipe runs through to inlay and has the control valve body.

Preferably, the connecting and fixing piece comprises a rotating ring which is rotatably installed at the upper edge of the outer side of the second oil pipe, a fixing groove ring is inlaid at the lower edge of the outer side of the first oil pipe, the upper end face of the rotating ring is attached to the lower end face of the fixing groove ring, a limiting block extends from the upper end of the rotating ring, the limiting block penetrates through the inner portion fixed on the fixing groove ring, and a rubber pad is arranged between the upper end face of the second oil pipe and the lower end face of the first oil pipe.

Preferably, the lower end face of the fixed groove ring is provided with a through groove, the lower end face of the fixed groove ring is provided with a limiting groove, the limiting groove is communicated with the through groove, the outer surface of the limiting block is attached to the inner outer surface of the limiting groove, the upper end face of the fixed groove ring is inserted with a sealing frame in a penetrating manner, the upper end face of the sealing frame is attached with a bearing plate, the middle part of the lower end face of the bearing plate extends with a guide pillar, the guide pillar and the bearing plate are integrally formed, the guide pillar penetrates through the inside of the sealing frame, the end part of the guide pillar extends with a guide plate, the guide plate is attached and slidably mounted in the inside of the sealing frame, the lower end face of the guide plate extends with a positioning lug, the positioning lug slidably penetrates through the inner bottom face of the sealing frame, the positioning lug slidably penetrates through the upper end face of the limiting block, the positioning lug and the, reset spring is located between the inside top surface of sealed frame and the up end of baffle, No. two oil pipe's outside top edge inlays there is the connection bearing, the connection bearing runs through and inlays in the inside of change.

Preferably, the oil production spare is including extending the fixed frame in No. two oil pipe's inner wall department, the tip fixed mounting of fixed frame has submersible motor, submersible motor's output is connected with the screw pump, the screw pump is inlayed in No. two oil pipe's inner wall.

Preferably, the oil filter spare is including seting up the sealed spout at No. two oil pipe's lower terminal surface, the inside slidable mounting of sealed spout has sealed bulge loop, the lower terminal surface of sealed bulge loop extends there is the go-between, go-between and sealed bulge loop integrated into one piece, the lower extreme of go-between is inlayed and is had the filter screen, the cross sectional shape of filter screen is the V font, it has the bearing body to run through to inlay in the lower terminal surface middle part of filter screen, the output of screw pump runs through the inside of inlaying in the bearing body, the output of screw pump is inlayed and is had the cleaning rod, the cleaning rod is laminated in the lower terminal surface of filter screen, the side of cleaning rod is seted up to the inclined plane, the inside top surface of sealed spout extends has the promotion spring, the lower tip of promotion spring and the up end fixed connection of sealed bulge loop, the cross sectional shape.

Preferably, the support member includes a U-shaped channel frame extending at the edge of the lower end surface of the oil collecting tank, a bearing rod is inserted through the front and rear end surfaces of the inside of the U-shaped channel frame, a connecting convex plate is attached to the outer side of the bearing rod, a support base extends from the lower end of the connecting convex plate, a fixing plate is inserted on the outer side of the bearing rod, the front end surface of the fixing plate is closely attached to the rear end surface of the connecting convex plate, a reinforcing column is slidably inserted through the front end surface of the U-shaped channel frame, a limiting plate is inserted at the end of the reinforcing column, a shifting sheet extends from the side surface of the limiting plate, the bearing rod is slidably inserted through the inside of the limiting plate, the rear end surface of the limiting plate is tightly pressed against the front end surface of the connecting convex plate, a spring body is wound on the outer side of the reinforcing column, the spring body is located between the front end surface of the inside of the U-shaped channel frame and the front, the fixed convex teeth are arranged in an annular array mode by taking the axial lead of the bearing rod as the circle center, the front end face of the connecting convex plate is provided with a plurality of groups of tooth grooves, and the fixed convex teeth penetrate through and are attached to the inner portions of the tooth grooves.

Preferably, the side of supporting seat is seted up flutedly, terminal surface lower limb department runs through respectively around the inside of recess and inlays and have two sets of solid fixed cylinders, and is two sets of the dwang is all laminated to install in the inside of solid fixed cylinder, the bedplate is inlayed in the outside of dwang, the bedplate is located the inside of recess, the side linear array of bedplate extends has the multiunit to consolidate the awl post, the side of supporting seat is close to lower limb department and runs through to screw and has two sets of fixing bolt, one of them is organized fixing bolt runs through the side of screwing in one of them a set of solid fixed cylinder, another group fixing bolt runs through the side of screwing in another group of solid fixed cylinder, fixing bolt's tip compresses tightly in the.

Compared with the prior art, the invention has the following beneficial effects:

1. through the even firmware that sets up, can place oil pipe No. two on oil pipe, restriction piece on the change gets into the logical groove on the fixed slot ring simultaneously, the loading board is pulled afterwards, in order to drive the location lug removal and get into sealed frame, then rotate the change, make its restriction piece can remove in leading to the groove and get into the restriction groove, loosen the loading board afterwards, in order to promote the baffle through reset spring and remove, make the location lug of its baffle tip can remove and pass in the bottom entering restriction piece of sealed frame, in order to fix the restriction piece in the restriction groove, make its fixed slot ring and change can fix together, and then put together oil pipe and No. two oil pipes, with this concatenation to oil pipe has made things convenient for, the convenience in use degree is improved.

2. Through the oil strain piece that sets up, can drive the clean pole when oil production piece operates and rotate, make its clean pole can rotate and paste and cover on the filter screen, remove with the impurity that promotes the filter screen surface, simultaneously under the effect on the side of clean pole is the inclined plane, make it when clean pole constantly promotes impurity, impurity can remove the surface that progressively breaks away from the filter screen along the inclined plane of clean pole, in order to avoid impurity to cause the phenomenon of blockking up and influence the oil recovery quality on attached to the filter screen, with this improvement its oil recovery quality, simultaneously under the promotion of promotion spring, can promote sealed bulge loop, and then promote the filter screen and remove, make its filter screen contact with clean pole all the time, in order to guarantee its clearance quality.

3. Through setting up support piece, can overturn the supporting seat, make its supporting seat can take place the slope, with the contact surface of four group's supporting seats of increase and native ground, make it more fixed when placing, promote the limiting plate through the spring body simultaneously, make it connect the flange can by the centre gripping between limiting plate and fixed plate, the fixed dogtooth of multiunit on the limiting plate can get into and connect the tooth's socket on the flange simultaneously, with fixing the rotation prevention to connecting the flange, and then reach the supporting seat that goes on fixing the upset purpose, and can overturn the bedplate, make its bedplate break away from the recess and attach on the native ground, the while multiunit consolidates the awl post puncture in ground, with this steadiness that improves supporting seat and ground, with the phenomenon that the removal appears in this oil recovery electric submersible pump screw pump when avoiding oil recovery, with this stability when improving oil recovery.

Drawings

FIG. 1 is a schematic diagram of a downhole driven oil recovery electric submersible screw pump according to the present invention;

FIG. 2 is a half sectional view of a coupling for a downhole driven oil recovery electric submersible screw pump of the present invention;

FIG. 3 is another perspective half sectional view of a coupling for a downhole driven oil recovery electric submersible screw pump of the present invention;

FIG. 4 is an enlarged view of A of a downhole driven oil recovery electric submersible progressive cavity pump of the present invention;

FIG. 5 is a fixed view of a support base of an oil recovery electric submersible screw pump of the present invention driven in a well;

FIG. 6 is an enlarged view of B of a downhole driven oil recovery electric submersible screw pump of the present invention;

FIG. 7 is an inside view of tubing number two of the downhole driven oil recovery electric submersible screw pump of the present invention;

FIG. 8 is an enlarged view of C of an oil recovery electric submersible screw pump of the present invention driven in a well;

fig. 9 is a schematic view of a support base of an oil recovery electric submersible screw pump of the present invention driven in a well.

In the figure: 1. an oil sump; 2. an oil pipe I; 3. a second oil pipe; 4. an oil discharge pipe; 5. a control valve body; 6. a supporting seat; 7. a U-shaped slot frame; 8. a carrier bar; 9. a fixing plate; 10. connecting the convex plate; 11. a reinforcement column; 12. a spring body; 13. a limiting plate; 14. fixing the convex teeth; 15. a shifting sheet; 16. a groove; 17. a seat plate; 18. reinforcing the conical column; 19. rotating the rod; 20. a fixed cylinder; 21. fixing the bolt; 22. a submersible motor; 23. fixing the frame; 24. a screw pump; 25. filtering with a screen; 26. a connecting ring; 27. a sealing convex ring; 28. sealing the chute; 29. a push spring; 30. a cleaning rod; 31. a bearing body; 32. connecting a bearing; 33. rotating the ring; 34. fixing the groove ring; 35. a through groove; 36. a limiting groove; 37. a limiting block; 38. a sealing frame; 39. a carrier plate; 40. a guide post; 41. a guide plate; 42. positioning the bump; 43. a return spring.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

The oil extraction electric submersible screw pump driven in the well as shown in the figures 1-9 comprises a first oil pipe 2, an oil collecting piece is embedded at the position, close to the upper edge, of the outer side of the first oil pipe 2, a second oil pipe 3 is installed at the lower end of the first oil pipe 2 in an attaching mode, a connecting piece is arranged between the first oil pipe 2 and the second oil pipe 3, an oil extracting piece is embedded at the position, close to the lower edge, of the inner portion of the second oil pipe 3, an oil filtering piece is installed at the lower end face of the second oil pipe 3, the oil filtering piece is connected with the oil extracting piece, and four groups of supporting pieces extend from the edge of the lower.

The oil collecting piece is including inlaying the oil trap 1 that is close to the top edge department in oil pipe 2's the outside, the up end of oil pipe 2 is higher than the inside bottom surface of oil trap 1 under the same plumb line, the preceding terminal surface of oil trap 1 is close to the lower edge department and runs through to inlay and has arranged oil pipe 4, the up end of arranging oil pipe 4 runs through to inlay and has control valve body 5, oil trap 1 who has used the setting can concentrate the crude oil of following the discharge in oil pipe 2, arrange oil pipe 4 and can discharge the crude oil in the oil trap 1, control valve body 5 plays the effect of opening or closing row oil pipe 4.

Even the firmware is including rotating swivel 33 of installing in No. two oil pipe 3's outside top edge department, No. one oil pipe 2's outside bottom edge department is inlayed and is had fixed slot ring 34, swivel 33's up end laminating in fixed slot ring 34's lower terminal surface, swivel 33's upper end extends and has restricted block 37, restricted block 37 runs through the inside of being fixed in fixed slot ring 34, be provided with the rubber pad between No. two oil pipe 3's the up end and No. one oil pipe 2's the lower terminal surface, can increase the leakproofness between No. two oil pipe 3 and No. one oil pipe 2 through the rubber pad that sets up, swivel 33 can drive restricted block 37 and rotate.

The lower end face of the fixed groove ring 34 is provided with a through groove 35, the lower end face of the fixed groove ring 34 is provided with a limiting groove 36, the limiting groove 36 is communicated with the through groove 35, the outer surface of the limiting block 37 is attached to the inner outer surface of the limiting groove 36, the upper end face of the fixed groove ring 34 is inserted with a sealing frame 38 in a penetrating manner, the upper end face of the sealing frame 38 is attached with a bearing plate 39, the middle part of the lower end face of the bearing plate 39 extends to form a guide pillar 40, the guide pillar 40 and the bearing plate 39 are integrally formed, the guide pillar 40 penetrates through the sealing frame 38, the end part of the guide pillar 40 extends to form a guide plate 41, the guide plate 41 is attached to and slidably mounted inside the sealing frame 38, the lower end face of the guide plate 41 extends to form a positioning lug 42, the positioning lug 42 slidably penetrates through the inner bottom face of the sealing frame 38, the positioning lug 42 slidably penetrates through the upper, reset spring 43 is located between the inside top surface of sealed frame 38 and the up end of baffle 41, the outside top edge department of No. two oil pipes 3 inlays and has connecting bearing 32, connecting bearing 32 runs through and inlays in the inside of swivel 33, connecting bearing 32 through the setting can guarantee that swivel 33 rotates steadily, location lug 42 can be fixed restriction piece 37, the rotation phenomenon is avoided appearing, baffle 41 plays the effect of direction, loading board 39 and guide pillar 40 can stimulate baffle 41, and then drive location lug 42 and remove.

The oil recovery piece is including extending the fixed frame 23 in No. two oil pipe 3's inner wall department, and the tip fixed mounting of fixed frame 23 has submersible motor 22, and submersible motor 22's output is connected with screw pump 24, and screw pump 24 inlays in No. two oil pipe 3's inner wall, can fix submersible motor 22 through the fixed frame 23 that sets up, and submersible motor 22 can drive screw pump 24.

The oil filter comprises a sealing sliding chute 28 arranged on the lower end face of the second oil pipe 3, a sealing convex ring 27 is slidably arranged in the sealing sliding chute 28, a connecting ring 26 extends from the lower end face of the sealing convex ring 27, the connecting ring 26 and the sealing convex ring 27 are integrally formed, a filter screen 25 is embedded in the lower end of the connecting ring 26, the filter screen 25 is V-shaped in cross section, a bearing body 31 penetrates through and is embedded in the middle of the lower end face of the filter screen 25, an output end of a screw pump 24 penetrates and is embedded in the bearing body 31, an output end of the screw pump 24 is embedded with a cleaning rod 30, the cleaning rod 30 is attached to the lower end face of the filter screen 25, the side face of the cleaning rod 30 is arranged to be an inclined plane, a pushing spring 29 extends from the top face in the sealing sliding chute 28, the lower end of the pushing spring 29 is fixedly connected with the upper end face of the sealing convex ring 27, the sealing convex ring 27 is T-shaped in cross section, the connection part between the filter screen 25 and the second oil pipe 3 can be sealed, the filter screen 25 can be pushed by the pushing spring 29 to be always contacted with the cleaning rod 30, and the connecting ring 26 plays a role in connection.

The supporting piece comprises a U-shaped groove frame 7 extending at the edge of the lower end face of the oil collecting tank 1, a bearing rod 8 penetrates through and is embedded in the front end face and the rear end face of the inside of the U-shaped groove frame 7, a connecting convex plate 10 is attached to the outer side of the bearing rod 8 in an attaching mode, a supporting seat 6 extends from the lower end of the connecting convex plate 10, a fixing plate 9 is embedded in the outer side of the bearing rod 8, the front end face of the fixing plate 9 is attached to the rear end face of the connecting convex plate 10 in a tight mode, a reinforcing column 11 is slidably installed through the front end face of the U-shaped groove frame 7 in a penetrating mode, a limiting plate 13 is embedded in the end face of the reinforcing column 11, a shifting piece 15 extends from the side face of the limiting plate 13, the bearing rod 8 slidably penetrates through the inside of the limiting plate 13, the rear end face of the limiting plate 13 is tightly pressed on the front end face of the connecting convex plate 10, a spring body 12 is wound on the outer side, the fixed protruding tooth 14 of multiunit uses the axial lead of carrier bar 8 to be the circular array and arranges as the centre of a circle, connect the preceding terminal surface of flange 10 and seted up multiunit tooth's socket, the fixed protruding tooth 14 of multiunit runs through the inside of laminating in multiunit tooth's socket, the enhancement post 11 through setting up can restrict limiting plate 13, make it can rectilinear movement, avoid limiting plate 13 to appear rotating the phenomenon simultaneously, plectrum 15 can be convenient for promote limiting plate 13, spring body 12 can compress tightly limiting plate 13 on connecting flange 10, cooperation between fixed protruding tooth 14 and the tooth's socket can be avoided connecting flange 10 and rotate, and then avoid supporting seat 6 to rotate, U-shaped truss 7 plays the effect of connecting.

The side of the supporting seat 6 is provided with a groove 16, the lower edge of the front and rear end faces inside the groove 16 is respectively penetrated and embedded with two groups of fixing cylinders 20, the insides of the two groups of fixing cylinders 20 are respectively attached and installed with a rotating rod 19, the outer side of the rotating rod 19 is embedded with a seat plate 17, the seat plate 17 is positioned inside the groove 16, the side of the seat plate 17 extends in a linear array to form a plurality of groups of reinforcing conical columns 18, the side of the supporting seat 6 near the lower edge is penetrated and screwed with two groups of fixing bolts 21, one group of fixing bolts 21 penetrates and screws on the side of one group of fixing cylinders 20, the other group of fixing bolts 21 penetrates and screws on the side of the other group of fixing cylinders 20, the end parts of the fixing bolts 21 are tightly pressed on the outer surface of the rotating rod 19, the rotating rod 19 can be limited by the arranged fixing cylinders 20, the fixing bolts 21 can pressurize, the reinforcing cone posts 18 can improve the stability of the seat plate 17 with the ground.

During operation, a user can turn over the supporting seat 6 to enable the supporting seat 6 to incline, meanwhile, the limiting plate 13 is pushed through the spring body 12 to enable the connecting convex plate 10 to be clamped between the limiting plate 13 and the fixing plate 9, meanwhile, a plurality of groups of fixing convex teeth 14 on the limiting plate 13 can enter tooth grooves on the connecting convex plate 10 to fix the connecting convex plate 10 against rotation, the turned supporting seat 6 is fixed, the user turns over the seat plate 17 to enable the seat plate 17 to be separated from the groove 16 and attached to the ground, meanwhile, a plurality of groups of reinforcing conical columns 18 are punctured in the ground, then the user places the second oil pipe 3 on the first oil pipe 2, meanwhile, the limiting blocks 37 on the rotary ring 33 enter the through grooves 35 on the fixing groove rings 34, and then the user pulls the bearing plate 39 to drive the positioning convex blocks 42 to move into the sealing frame 38, the user then rotates the swivel ring 33 so that its limit blocks 37 can move in the through slots 35 into the limit slots 36, whereupon the user releases the carrier plate 39, so as to push the guide plate 41 to move through the return spring 43, so that the positioning lug 42 at the end of the guide plate 41 can move through the bottom of the sealing frame 38 and enter the limiting block 37, to fix the restricting block 37 in the restricting groove 36, so that the fixing groove ring 34 and the swivel ring 33 can be fixed together, then the first oil pipe 2 and the second oil pipe 3 are spliced together, and by analogy, a plurality of groups of oil pipes are spliced together, so that the oil pipes can enter an oil well, the submersible motor 22 can operate to drive the screw pump 24 to pump oil out and convey the oil into the oil collecting tank 1 through the upper end of the oil pipe to complete oil extraction, and in the oil recovery process, can filter the impurity in the oil with the jam phenomenon appears when avoiding recovering oil through filter screen 25.

In summary, with the connecting member provided, the second oil pipe 3 can be placed on the first oil pipe 2, the limiting block 37 on the swivel 33 enters the through slot 35 on the fixed slot ring 34, then the bearing plate 39 is pulled to drive the positioning protrusion 42 to move into the sealing frame 38, then the swivel 33 is rotated to enable the limiting block 37 to move into the limiting slot 36 in the through slot 35, then the bearing plate 39 is released to push the guide plate 41 to move through the return spring 43, so that the positioning protrusion 42 at the end of the guide plate 41 can move through the bottom of the sealing frame 38 to enter the limiting block 37, so as to fix the limiting block 37 in the limiting slot 36, enable the fixed slot ring 34 and the swivel 33 to be fixed together, and further assemble the first oil pipe 2 and the second oil pipe 3 together, thereby facilitating the assembly of the oil pipes, improving the convenience of use, and with the oil filtering member provided, the oil extraction device can drive the cleaning rod 30 to rotate when the oil extraction element operates, so that the cleaning rod 30 can rotate and be attached to the filter screen 25 to push impurities on the surface of the filter screen 25 to move, meanwhile, under the action that the side surface of the cleaning rod 30 is an inclined surface, when the cleaning rod 30 continuously pushes the impurities, the impurities can move along the inclined surface of the cleaning rod 30 to gradually separate from the surface of the filter screen 25 so as to avoid the phenomenon that the impurities are attached to the filter screen 25 to cause blockage to influence the oil extraction quality, thereby improving the oil extraction quality, meanwhile, under the pushing of the pushing spring 29, the sealing convex ring 27 can be pushed to further push the filter screen 25 to move, so that the filter screen 25 can always contact with the cleaning rod 30 to ensure the cleaning quality, the supporting seat 6 can be overturned by arranging the supporting element, so that the supporting seat 6 can incline to increase the contact surface of the four groups of supporting seats 6 with the ground, make it more fixed when placing, promote limiting plate 13 through spring body 12 simultaneously, make it connect flange 10 can be by the centre gripping between limiting plate 13 and fixed plate 9, the fixed dogtooth 14 of multiunit on the limiting plate 13 can get into the tooth's socket on connecting flange 10 simultaneously, prevent to rotate connecting flange 10 to fix, and then reach the purpose of fixing the supporting seat 6 of upset, and can overturn bedplate 17, make its bedplate 17 break away from the recess 16 and attach on the earth ground, multiunit consolidates the awl post 18 puncture in ground simultaneously, with this steadiness that improves supporting seat 6 and ground, the phenomenon that the removal appears in this oil recovery electric submersible screw pump when avoiding producing oil, stability when improving oil recovery with this.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.