An on-site continuous treatment device for downhole sludge in oil extraction

Abstract

The present invention relates to the technical field of oil extraction, and particularly to a continuous on-site treatment device for downhole sludge in oil extraction, which includes an oil production cylinder body and a partition plate inside the oil production cylinder body. A delivery pipe is connected between the partition plate and the oil production cylinder body. A guiding plugging assembly is arranged at the top of the delivery pipe, and a filtering cover is installed at the bottom of the oil production cylinder body. A dispersing plugging assembly is arranged inside the filtering cover; the present invention combines an oil production assembly with a guiding plugging assembly and a dispersing plugging assembly to enable efficient pumping treatment of oil-containing liquid, and combines with the oil liquid to form a hydraulic transmission system; the auxiliary dispersing plugging assembly is used to perform multi-stage crushing treatment on the sludge in the oil liquid, and to perform dredging treatment on the filtering cover from the inside to the outside, and the guiding plugging assembly is used to prevent sludge impurities from precipitating; the linkage collection type sludge removal assembly is used to perform isolated continuous collection treatment on the filtered sludge to prevent continuous accumulation of sludge.

Description

Technical Field

[0001] The present invention relates to the technical field of oil extraction, and particularly relates to a device for on-site continuous treatment of downhole sludge in oil extraction. Background Art

[0002] In the field of oil extraction, especially during the exploitation of deep oil wells, the internal environment of the oil well is complex, and the oil extraction operation faces many challenges. When directly pumping oil, since the inlet pipe extends deep into the bottom of the oil well, a large amount of sediment, impurities, and viscous oil liquid are mixed in the extracted oil. Especially in the deep area of the oil well, the proportion of oily sludge and high-viscosity oil liquid increases significantly, which not only significantly reduces the oil extraction efficiency but also easily causes blockage of the oil extraction pipeline, thus affecting the normal operation of the equipment.

[0003] For example, a high-efficiency extraction device for oil extraction with the publication number CN108005616A extracts and transports oil liquid through a rotating oil extraction spiral body in a liquid extraction cylinder assembly. Although it can extract viscous oil liquid and oil liquid containing sediment and filter out sludge impurities in the oil liquid to avoid pipeline blockage and improve the quality of oil extraction;

[0004] However, the filtered sludge impurities are always in the filter cylinder body on the oil liquid transportation path. As the extraction time prolongs, the sludge impurities inside the filter cylinder body continuously accumulate. Although a stirring impeller is provided in the device to slow down the speed of sludge wrapping the filter element cylinder body, it is still difficult to fundamentally solve the problem of rapid accumulation of sludge impurities, resulting in low extraction efficiency in the later stage. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for on-site continuous treatment of downhole sludge in oil extraction to solve the above-mentioned technical defects.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A device for on-site continuous treatment of downhole sludge in oil extraction includes an oil production cylinder body, and a partition fixedly connected inside the oil production cylinder body. A conveying pipe is fixedly connected between the partition and the bottom inside the oil production cylinder body. A guiding plugging component is arranged at the top of the conveying pipe. An oil suction port is penetrated and opened at the bottom of the oil production cylinder body, and a filter cover is fixedly installed. A dispersing plugging component is arranged inside the filter cover. A collecting sludge removal component and an oil production component are respectively arranged on the top and bottom sides of the partition inside the oil production cylinder body;

[0007] The collecting sludge removal component includes a sludge collecting cylinder fixedly installed inside the oil production cylinder body. A rotating disk is rotatably installed at the top of the sludge collecting cylinder, and a plurality of oil transmission cavities are penetrated and opened at the top of the rotating disk. A corrugated filter screen is installed in the oil transmission cavity. A sludge inlet is opened at one side of the top of the sludge collecting cylinder.

[0008] Preferably, a first communication port is formed in the annular side wall of the sludge collecting cylinder, a second communication port matching with the first communication port is formed through one side of the oil transmission cavity, and two groups of elastic plates distributed in an eight-shaped manner are fixedly connected inside the second communication port.

[0009] Preferably, a plurality of trapezoidal grooves are equidistantly formed in the outer annular wall of the rotating disk, a plurality of movable columns are slidably mounted on the inner annular wall of the oil production cylinder body, and auxiliary springs are fixedly connected between the movable columns and the oil production cylinder body.

[0010] Preferably, a rotating sleeve rotatably connected with the sludge collecting cylinder is fixedly connected to the bottom of the rotating disk, a plurality of inclined grooves are equidistantly formed in the outer annular wall of the rotating sleeve, a vertical groove is formed between two adjacent groups of inclined grooves, a guiding block is fixedly connected inside the vertical groove, and a scraping plate is fixedly connected to the rotating sleeve.

[0011] Preferably, the guiding type plugging and sealing assembly includes a convex plug block located at the inner top of the conveying pipe, an installation plate is fixedly connected to the top of the convex plug block, an arc-shaped drainage groove is formed in the bottom of the installation plate, and a guide rod in sealed sliding connection with the sludge collecting cylinder is fixedly connected to the top of the installation plate.

[0012] Preferably, a first return spring is fixedly connected between the installation plate and the sludge collecting cylinder, a spring pin is fixedly installed on the guide rod, an oil transmission pipe with a one-way valve inside is fixedly communicated with one side of the top of the oil production cylinder body, and a sludge discharge port penetrating through the oil production cylinder body is formed in one side of the bottom of the sludge collecting cylinder.

[0013] Preferably, the oil production assembly includes a piston block slidably connected between the conveying pipe and the oil production cylinder body, a reciprocating lead screw in threaded connection with the piston block is rotatably connected inside the oil production cylinder body, and oil inlet ports are formed in the bottom sides of both sides of the conveying pipe.

[0014] Preferably, a spline shaft is rotatably installed at the bottom of the oil production cylinder body, sprockets are installed on both the spline shaft and the reciprocating lead screw, the sprockets are connected by a chain in a transmission manner, and the end of the spline shaft penetrates to the outside of the filter cover and a stirring rod is installed.

[0015] Preferably, the dispersing type plugging and sealing assembly includes a plugging block arranged in the oil suction port, a vertical rod is fixedly connected to the bottom of the plugging block, a U-shaped plate in sliding connection with the vertical rod is welded to the bottom of the oil production cylinder body, a mounting frame is slidably arranged on the spline shaft, a brush hair is fixedly arranged at the bottom of the mounting frame, a mounting ring fixedly connected with the vertical rod is rotatably connected to the top of the mounting frame, and a second return spring is connected between the mounting ring and the U-shaped plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention combines a reciprocating piston block with a convex block and a plugging block, which can not only realize efficient extraction and treatment of impure oil liquids of different viscosities in the oil well, but also form a hydraulic transmission system with the help of the flow of oil liquid in the oil production cylinder, assist the movement of the convex block and the plugging block, and promote the intermittent deflection of the rotating disk and the reciprocating lifting and lowering of the mounting frame; through the intermittent deflection of the rotating disk, multiple oil delivery chambers are used alternately, and the movable column is used to impact and vibrate the trapezoidal groove, while the impure oil liquid in the oil well is extracted by efficient filtering, and the filtered sludge is simultaneously isolated and continuously collected and treated, thereby avoiding the problem of continuous accumulation of sludge and reduced extraction efficiency;

[0018] The present invention promotes the brush hairs to penetrate into the filter holes of the filter cover by lifting the mounting frame, so as to realize the dredging treatment from the inside to the outside of the impurities blocked in the filter holes of the filter cover, and further ensure the efficient extraction and treatment of the oil by the device. In addition, by means of the spline shaft driving the rotation of the mounting frame and combining with the stirring rod, the viscous oil or oil sludge in the oil well can be subjected to multi-stage stirring and crushing treatment, effectively preventing the accumulation of a large volume of sludge in the oil production cylinder and affecting the oil production efficiency; and, through the arc-shaped drainage groove provided on the mounting plate, during the oil extraction and transportation process, the impure oil liquid impacts the top of the partition plate, thereby performing a disturbing mixing treatment on the impure oil liquid, so as to avoid the problem that the sludge is precipitated into the oil production cylinder and is difficult to be discharged, affecting the oil production efficiency;

[0019] The present invention also uses the elastic effect of a pair of return springs on the blocking blocks, so that during the initial rise of the piston block to suck oil, part of the impure oil in the delivery pipe is extracted, the auxiliary convex blocking block resets and blocks the delivery pipe, and combined with the one-way valve in the oil pipe, it can suck back the excess oil in the oil delivery chamber, avoiding the problem that the oil in the oil delivery chamber cannot move up and discharge and enters the mud collecting barrel, resulting in the inability to collect sludge in the later stage of extraction, and continuous accumulation in the oil delivery chamber to reduce the extraction efficiency; in addition, when the excess oil is sucked back, combined with the resistance of the ends of the two groups of elastic plates, the sucking back of sludge impurities can be limited, thereby improving the continuous collection and treatment effect of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings;

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the oil production cylinder of the present invention;

[0023] Figure 3 The structure of the oil extraction cylinder of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 4It is a schematic diagram of the structure of the oil production cylinder body of the present invention Figure 2 ;

[0025] Figure 5 It is a schematic structural diagram of the guiding plugging and sealing assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the cooperation between the guiding plugging and sealing assembly and the mud collecting cylinder of the present invention;

[0027] Figure 7 It is a schematic structural diagram of the rotating disk of the present invention;

[0028] Figure 8 It is a schematic diagram of the cooperation between the guiding plugging and sealing assembly and the rotating sleeve of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the collecting type mud removal assembly of the present invention;

[0030] Figure 10 It is a schematic structural diagram of the oil production assembly of the present invention;

[0031] Figure 11 It is a schematic structural diagram of the dispersing type plugging and sealing assembly of the present invention;

[0032] Figure 12 It is a schematic diagram of the cooperation between the oil production assembly and the dispersing type plugging and sealing assembly of the present invention;

[0033] Figure 13 It is a schematic diagram of the flow of the oil-containing liquid on the filtration path.

[0034] Legend description:

[0035] 1. Oil production cylinder body; 11. Partition board; 12. Delivery pipe; 13. Filter cover; 14. Movable column; 15. Auxiliary spring; 16. Oil delivery pipe;

[0036] 2. Guiding plugging and sealing assembly; 21. Convex plug; 22. Mounting plate; 23. Arc-shaped drainage groove; 24. Guide rod; 25. First reset spring;

[0037] 3. Dispersing type plugging and sealing assembly; 31. Plugging block; 32. Vertical rod; 33. U-shaped plate; 34. Mounting frame; 35. Second reset spring;

[0038] 4. Collecting type mud removal assembly; 41. Mud collecting cylinder; 42. Rotating disk; 43. Oil delivery cavity; 44. Wave filter screen; 45. Mud inlet; 46. First communication port; 47. Second communication port; 48. Elastic plate; 49. Trapezoidal groove; 410. Rotating sleeve; 411. Mud scraping plate; 412. Mud discharge port;

[0039] 5. Oil production assembly; 51. Piston block; 52. Reciprocating lead screw; 53. Spline shaft; 54. Sprocket; 55. Chain; 56. Stirring rod. Specific Embodiments

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment 1: Please refer to Figures 1 - 10 As shown, in view of the continuous accumulation of sludge impurities inside the filter cartridge body in the prior art, it is difficult to fundamentally solve the problem that the sludge impurities quickly accumulate and wrap the filter cartridge body, resulting in low later extraction efficiency. The following solutions can be adopted to solve this problem;

[0042] In this embodiment, an on-site continuous treatment device for downhole sludge in oil extraction includes an oil production cylinder 1 and a partition 11 fixedly connected inside the oil production cylinder 1, which is used to divide the interior of the oil production cylinder 1 into an oil suction chamber and a sludge treatment chamber. A delivery pipe 12 is fixedly connected between the partition 11 and the bottom inside the oil production cylinder 1, and a guiding plugging assembly 2 is arranged at the top of the delivery pipe 12;

[0043] The bottom of the oil production cylinder 1 is penetrated with an oil suction port, and a filter cover 13 is fixedly installed. The filter cover 13 filters and intercepts difficult-to-break sand and gravel to prevent it from entering the device through the oil suction port. A dispersing plugging assembly 3 is arranged inside the filter cover 13. A collecting sludge removal assembly 4 and an oil production assembly 5 are respectively arranged on the top and bottom sides of the partition 11 inside the oil production cylinder 1;

[0044] The collecting sludge removal assembly 4 includes a sludge collecting cylinder 41 fixedly installed inside the oil production cylinder 1, which isolates and continuously collects and processes the filtered sludge, thereby avoiding the problem of continuous sludge accumulation on the oil delivery path and reducing the extraction efficiency. A rotating disk 42 is rotatably installed at the top of the sludge collecting cylinder 41, and a plurality of oil delivery cavities 43 are penetrated through the top of the rotating disk 42;

[0045] Sealing rings are fixedly embedded on the rotating disk 42 outside the oil delivery cavities 43 to increase the sealing performance between the rotating disk 42 and the oil production cylinder 1 and the sludge collecting cylinder 41. With the reciprocating lifting movement of the convex plug 21, the rotating disk 42 is intermittently deflected, so that the plurality of oil delivery cavities 43 are alternately used;

[0046] While efficiently filtering the oil well containing miscellaneous oil liquid during oil extraction, the sludge filtered is synchronously collected and treated in an isolated and continuous manner, thereby avoiding the problem of continuous sludge accumulation and reducing the oil extraction efficiency. A corrugated filter screen 44 is installed in the oil delivery chamber 43 for filtering the sludge in the extracted oil liquid, and the corrugated structure of the corrugated filter screen 44 is used to increase the filtering area and further improve the filtering and oil extraction efficiency. A mud inlet 45 is provided on one side of the top of the mud collecting cylinder 41.

[0047] A communication port one 46 is provided on the annular side wall of the mud collecting cylinder 41, and a communication port two 47 matching the communication port one 46 is penetrated and provided on one side of the oil delivery chamber 43. Two groups of elastic plates 48 distributed in an octagonal shape are fixedly connected inside the communication port two 47. The miscellaneous oil liquid in the oil extraction cylinder 1 above the partition plate 11 enters the corresponding communication port two 47 through the middle cavity of the mud collecting cylinder 41 and the communication port one 46 on the middle cavity, and pushes the end parts of the two groups of elastic plates 48 distributed in an octagonal shape to separate, and then enters the corresponding oil delivery chamber 43.

[0048] The sludge in the miscellaneous oil liquid is intercepted and filtered by the corrugated filter screen 44 in the oil delivery chamber 43, and the filtered oil liquid is discharged through the oil delivery pipe 16. When sucking back the excess oil liquid, combined with the contact of the end parts of the two groups of elastic plates 48, the sucking back of the sludge impurities can be restricted, thereby improving the continuous collection and treatment effect of the sludge.

[0049] A plurality of trapezoidal grooves 49 are equidistantly provided on the annular outer wall of the rotating disc 42. A plurality of movable columns 14 are slidably installed on the annular inner wall of the oil extraction cylinder 1, and an auxiliary spring 15 is fixedly connected between the movable column 14 and the oil extraction cylinder 1. During the rotation of the rotating disc 42, when a certain trapezoidal groove 49 on its outer wall separates from the movable column 14, it will push the movable column 14 to move and compress the corresponding auxiliary spring 15. When the adjacent trapezoidal groove 49 rotates to the position of the movable column 14, the movable column 14 resets under the compression elastic force of the auxiliary spring 15 and impacts the side wall of the trapezoidal groove 49, forming a vibration effect on the rotating disc 42.

[0050] During the rotation, the sludge filtered on the corrugated filter screen 44 is vibrated and separated, and falls to the top of the mud collecting cylinder 41. The separated sludge is pushed by the side wall of the oil delivery chamber 43 until it moves to the mud inlet 45 and enters the mud collecting cylinder 41 for collection, completing the continuous filtering and collection of the sludge in the oil liquid during the oil extraction process.

[0051] A rotating sleeve 410 rotatably connected to the sludge collecting cylinder 41 is fixedly connected to the bottom of the rotating disk 42. A plurality of inclined grooves are equidistantly formed on the annular outer wall of the rotating sleeve 410. A vertical groove is formed between two adjacent sets of inclined grooves. A guiding block is fixedly connected inside the vertical groove. The guiding block is located at the top of the inclined groove below the vertical groove and is used to ensure that the spring pin slides in the inclined groove when rising, so as to ensure that the spring pin slides in the inclined groove when rising. A scraping plate 411 is fixedly connected to the rotating sleeve 410. The rotation of the rotating sleeve 410 causes the scraping plate 411 to rotate inside the sludge collecting cylinder 41, assisting in the centralized discharge of the collected sludge.

[0052] The guiding type plugging assembly 2 includes a convex plug 21 located at the inner top of the conveying pipe 12. A mounting plate 22 is fixedly connected to the top of the convex plug 21. An arc-shaped drainage groove 23 is formed at the bottom of the mounting plate 22. A guide rod 24 hermetically sliding with the sludge collecting cylinder 41 is fixedly connected to the top of the mounting plate 22. The guide rod 24 is used to limit the movement direction of the convex plug 21. During the rising process of the piston block 51, the convex plug 21 plugs the top end of the conveying pipe 12, reducing the pressure inside the oil production cylinder body 1 below the partition plate 11. The oil-containing liquid with impurities in the oil well pushes the plugging block 31 away from the oil suction port and is sucked into the inside of the oil production cylinder body 1.

[0053] A first return spring 25 is fixedly connected between the mounting plate 22 and the sludge collecting cylinder 41. The provided first return spring 25 is used to assist the piston block 51 to quickly plug the top end of the conveying pipe 12 during the rising process. A spring pin is fixedly installed on the guide rod 24. During the rising process of the convex plug 21 pushing the mounting plate 22, the spring pin on the guide rod 24 slides in the inclined groove. Through the guiding of the inclined groove on the spring pin, the rotating disk 42 deflects until the spring pin enters the corresponding vertical groove, causing the adjacent oil delivery cavity 43 to communicate with the oil delivery pipe 16. When the mounting plate 22 returns and descends under the compression elastic force of the first return spring 25, the spring pin slides in the vertical groove to limit the deflection of the rotating disk 42;

[0054] An oil delivery pipe 16 with a one-way valve inside is fixedly connected to one side of the top of the oil production cylinder body 1. While the piston block 51 rises, a part of the oil-containing liquid with impurities in the conveying pipe 12 is synchronously extracted to assist the convex plug 21 to reset and plug the conveying pipe 12. Combined with the one-way valve in the oil delivery pipe 16, the excess oil liquid in the oil delivery cavity 43 is sucked back for treatment;

[0055] The two sets of elastic plates 48 are used to interfere with each other at the ends to limit the back suction of impurities, so as to prevent the oil in the oil delivery chamber 43 from being unable to move upward and discharge and enter the mud collecting barrel 41, resulting in the inability to collect sludge in the later stage of extraction, and the continuous accumulation in the oil delivery chamber 43 to reduce the extraction efficiency. A mud discharge port 412 penetrating the oil production cylinder body 1 is provided at the bottom of one side of the mud collecting barrel 41, and a plugging plate is bolted to the mud discharge port 412 on the oil production cylinder body 1. By opening the plugging plate on the oil production cylinder body 1 and drawing air or liquid by lifting and lowering the piston block 51, the rotating disk 42 is driven to rotate, and the scraper plate 411 is rotated in the mud collecting barrel 41 to discharge the collected sludge in a centralized manner.

[0056] The oil production assembly 5 includes a piston block 51 slidably connected between the delivery pipe 12 and the oil production cylinder 1, a reciprocating screw 52 threadedly connected to the piston block 51 is rotatably connected inside the oil production cylinder 1, oil inlets are provided at the bottom of both sides of the delivery pipe 12, a motor for driving the reciprocating screw 52 to rotate is bolted to the bottom of the partition 11, and fins are fixedly connected to the inner wall of the oil production cylinder 1 and the outer wall of the delivery pipe 12 to assist in heat dissipation of the heat generated by the motor;

[0057] A sliding rod that slides with the piston block 51 is fixedly connected inside the oil production cylinder 1. A telescopic protective tube is fixedly connected between the piston block 51 and the bottom of the oil production cylinder 1 and on the outside of the sliding rod and the reciprocating screw 52. This is used to prevent the impure oil from contacting the reciprocating screw 52 and the sliding rod, which would reduce the sealing performance of the piston block 51 and make it difficult to achieve efficient oil extraction. The oil production cylinder 1 is placed in an oil well, and during the downward movement, the motor drives the reciprocating screw 52 to rotate. The reciprocating screw 52 drives the piston block 51 to move upward inside the oil production cylinder 1 and, in conjunction with the oil suction port, extracts the impure oil in the oil well.

[0058] A spline shaft 53 is rotatably installed at the bottom of the oil production cylinder 1, and sprockets 54 are installed on the spline shaft 53 and the reciprocating screw 52. The sprocket 54 is connected by a chain 55. A protective shell is installed at the bottom of the oil production cylinder 1 on the outside of the sprocket 54. The end of the spline shaft 53 penetrates to the outside of the filter cover 13 and is installed with a stirring rod 56. During the rotation of the reciprocating screw 52, the spline shaft 53 is driven to rotate by the sprocket 54 and the chain 55. The spline shaft 53 drives the stirring rod 56 to rotate on the outside of the filter cover 13, so as to perform preliminary crushing treatment on the viscous oil or oil sludge in the oil well, so as to prevent a large volume of sludge from accumulating in the oil production cylinder 1 and affecting the oil production efficiency.

[0059] The dispersed plugging component 3 includes a plugging block 31 arranged in the oil suction port, and a vertical rod 32 is fixedly connected to the bottom of the plugging block 31. A U-shaped plate 33 that slides with the vertical rod 32 is welded to the bottom of the oil production cylinder body 1. An installation frame 34 slides on the spline shaft 53, and a brush is fixedly arranged at the bottom of the installation frame 34. The spline shaft 53 drives the installation plate 22 to drive the brush to rotate. Through the rotation of the brush and the rotating stirring rod 56, the viscous oil liquid or oil sludge in the oil well is subjected to multi-stage stirring and crushing treatment, and further fine crushing treatment of the sludge is carried out. The top of the installation frame 34 is rotatably connected to an installation ring fixedly connected to the vertical rod 32, and a second return spring 35 is connected between the installation ring and the U-shaped plate 33.

[0060] Embodiment 2: Please refer to Figure 2 , Figure 5 , Figure 11 and Figure 12 As shown, for the problems that the filter cover is prone to blockage, and the sludge impurities in the oil liquid in the oil production cylinder body are prone to precipitate, it is difficult to isolate and collect them, and it is impossible to further ensure the high-efficiency oil extraction efficiency, the following solutions can be adopted;

[0061] In this embodiment, the guiding plugging component 2 includes a convex plugging block 21 located at the inner top of the delivery pipe 12, and a mounting plate 22 is fixedly connected to the top of the convex plugging block 21. An arc-shaped drainage groove 23 is opened at the bottom of the mounting plate 22. When the oil liquid containing impurities enters the oil production cylinder body 1 above the partition plate 11, through the arc-shaped drainage groove 23 at the bottom of the mounting plate 22, the oil liquid containing impurities impacts the top of the partition plate 11, thereby performing a disturbance mixing treatment on the oil liquid containing impurities, so as to avoid the problem that the sludge precipitates inside the oil production cylinder body 1 and is difficult to discharge, affecting the oil extraction efficiency. A guide rod 24 that seals and slides with the sludge collection cylinder 41 is fixedly connected to the top of the mounting plate 22.

[0062] The dispersed plugging component 3 includes a plugging block 31 arranged in the oil suction port, and a vertical rod 32 is fixedly connected to the bottom of the plugging block 31. A U-shaped plate 33 that slides with the vertical rod 32 is welded to the bottom of the oil production cylinder body 1. An installation frame 34 slides on the spline shaft 53, and a brush is fixedly arranged at the bottom of the installation frame 34. The top of the installation frame 34 is rotatably connected to an installation ring fixedly connected to the vertical rod 32, and a second return spring 35 is connected between the installation ring and the U-shaped plate 33. When the piston block 51 is about to descend, the compression elastic force of the first return spring 25 prompts the plugging block 31 to quickly reset and plug the oil suction port, and drives the installation frame 34 to drive the brush to descend, so as to perform a dredging treatment from the inside to the outside on the impurities blocked in the filter holes of the filter cover 13, and further ensure the high-efficiency oil extraction treatment of the device for the oil liquid.

[0063] Embodiment 3: Please refer to Figures 1 - 12 As shown, the present invention also proposes a use method of an on-site continuous treatment device for downhole sludge in oil extraction, including the following steps:

[0064] Step 1: Place the oil production cylinder body 1 in the oil well. During the downward movement, the motor drives the reciprocating lead screw 52 to rotate. The reciprocating lead screw 52 drives the piston block 51 to reciprocate up and down inside the oil production cylinder body 1 to extract the oil-containing liquid with impurities, and drives the spline shaft 53 to rotate through the sprocket 54 and the chain 55. The spline shaft 53 drives the stirring rod 56 and the mounting plate 22 to carry the bristles to rotate, and performs multi-stage stirring and crushing treatment on the viscous oil liquid or oil sludge in the oil well, preventing sludge with a large volume from accumulating in the oil production cylinder body 1 and affecting the oil production efficiency, and filtering and intercepting the gravel that is difficult to break through the filter cover 13;

[0065] Step 2: During the upward movement of the piston block 51, the compression elastic force of the first return spring 25 prompts the convex block 21 to block the top end of the delivery pipe 12, reducing the pressure inside the oil production cylinder body 1 below the partition plate 11. The oil-containing liquid with impurities in the oil well pushes the blocking block 31 to rise by the external atmospheric pressure, compressing the first return spring 25. The blocking block 31 separates from the oil suction port, and then the oil-containing liquid with impurities in the oil well is sucked into the inside of the oil production cylinder body 1. And when the piston block 51 is about to descend, the compression elastic force of the first return spring 25 prompts the blocking block 31 to quickly reset and block the oil suction port, and drives the mounting frame 34 to carry the bristles to descend to clean the impurities blocked in the filter holes of the filter cover 13;

[0066] Step 3: During the downward movement of the piston block 51, the oil-containing liquid with impurities in the oil production cylinder body 1 below the partition plate 11 is pushed into the delivery pipe 12 through the oil inlet. The oil-containing liquid entering the delivery pipe 12 pushes the convex block 21 to rise, compressing the second return spring 35. The convex block 21 separates from the delivery pipe 12, and the oil-containing liquid enters the oil production cylinder body 1 above the partition plate 11. And during the entry process, through the arc-shaped drainage groove 23 at the bottom of the mounting plate 22, the oil-containing liquid impacts the top of the partition plate 11, thereby mixing the oil-containing liquid above the partition plate 11 and preventing the sludge from precipitating to the inside of the oil production cylinder body 1 and being difficult to discharge;

[0067] Step 4: The oil-containing liquid in the oil production cylinder body 1 above the partition plate 11 enters the corresponding communication port 47 through the middle cavity of the mud collecting cylinder 41 and the communication port 46 on the middle cavity, and pushes the end parts of the two groups of elastic plates 48 distributed in an eight-shape to separate, and then enters the corresponding oil delivery cavity 43. The sludge in the oil-containing liquid is intercepted and filtered by the corrugated filter screen 44 in the oil delivery cavity 43, and the filtered oil is discharged through the oil delivery pipe 16;

[0068] In addition, while the piston block 51 rises, a part of the oil-containing liquid in the delivery pipe 12 is extracted synchronously to assist the convex block 21 in resetting and blocking the delivery pipe 12. When the oil-containing liquid in the delivery pipe 12 decreases, combined with the one-way valve in the oil delivery pipe 16, the excess oil liquid in the oil delivery cavity 43 is sucked back, and through the contact of the end parts of the two groups of elastic plates 48, the back suction of impurities is restricted;

[0069] Step Five: During the process of the convex plug 21 pushing the mounting plate 22 upward, the spring pin on the guide rod 24 slides in the inclined groove. Through the guidance of the inclined groove on the spring pin, the rotating disk 42 is urged to deflect until the spring pin enters the corresponding vertical groove, causing the oil delivery chamber 43 on the adjacent side to communicate with the oil delivery pipe 16. When the mounting plate 22 resets and descends under the compressive elastic force of the first return spring 25, the spring pin slides in the vertical groove to limit the deflection of the rotating disk 42 and suck back the excess oil in the oil delivery chamber 43. By means of the reciprocating lifting movement of the convex plug 21, the rotating disk 42 is intermittently deflected, enabling multiple oil delivery chambers 43 to be used alternately to filter the oil containing impurities.

[0070] Step Six: During the rotation of the rotating disk 42, when the trapezoidal groove 49 on its outer wall separates from the movable column 14, the corresponding auxiliary spring 15 is compressed. When the adjacent trapezoidal groove 49 rotates to the position of a certain movable column 14, the movable column 14 resets under the compressive elastic force of the auxiliary spring 15 and impacts the side wall of the trapezoidal groove 49, forming a vibration effect on the rotating disk 42. Thus, the sludge filtered on the corrugated filter screen 44 during the rotation process is vibrationally detached and then falls to the top of the sludge collection cylinder 41. The sludge is pushed by the side wall of the oil delivery chamber 43 to move until it moves to the sludge inlet 45 and enters the sludge collection cylinder 41 for collection. Furthermore, the continuous filtration and collection of the sludge inside the oil during the oil extraction process are completed. By opening the plug plate and driving the rotation of the rotating disk 42 by lifting and lowering the piston block 51 to extract air or liquid, the scraping plate 411 is caused to rotate inside the sludge collection cylinder 41 to assist in the centralized discharge of the collected sludge.

[0071] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A continuous on-site treatment device for downhole sludge in oil extraction, comprising an oil production cylinder body (1), and a partition plate (11) fixedly connected inside the oil production cylinder body (1), a conveying pipe (12) is fixedly connected between the partition plate (11) and the bottom inside the oil production cylinder body (1), and is characterized in that, A guiding plugging component (2) is arranged at the top of the conveying pipe (12). An oil suction port is formed through the bottom of the oil production cylinder body (1), and a filter cover (13) is fixedly installed. A dispersing plugging component (3) is arranged inside the filter cover (13). A collecting sludge removal component (4) and an oil production component (5) are respectively arranged on the top and bottom sides of the partition plate (11) inside the oil production cylinder body (1). The collecting sludge removal component (4) includes a sludge collecting cylinder (41) fixedly installed inside the oil production cylinder body (1). A rotating disc (42) is rotatably installed at the top of the sludge collecting cylinder (41), and a plurality of oil conveying cavities (43) are formed through the top of the rotating disc (42). A corrugated filter screen (44) is installed inside the oil conveying cavity (43). A sludge inlet (45) is formed on one side of the top of the sludge collecting cylinder (41).

2. The on-site continuous treatment device for downhole sludge in oil extraction according to claim 1, characterized in that, A first communication port (46) is formed on the circumferential side wall of the sludge collecting cylinder (41). A second communication port (47) matching with the first communication port (46) is formed through one side of the oil conveying cavity (43), and two groups of elastic plates (48) distributed in an eight shape are fixedly connected inside the second communication port (47).

3. The on-site continuous treatment device for downhole sludge in oil exploitation according to claim 1, characterized in that, A plurality of trapezoidal grooves (49) are equidistantly formed on the circumferential outer wall of the rotating disc (42). A plurality of movable columns (14) are slidably installed on the circumferential inner wall of the oil production cylinder body (1), and an auxiliary spring (15) is fixedly connected between the movable column (14) and the oil production cylinder body (1).

4. A downhole sludge on-site continuous treatment device applicable to oil exploitation, as described in claim 1, characterized in that The bottom of the rotating disc (42) is fixedly connected with a rotating sleeve (410) rotatably connected with the sludge collecting cylinder (41). A plurality of oblique grooves are equidistantly formed on the circumferential outer wall of the rotating sleeve (410). A vertical groove is formed between two adjacent groups of oblique grooves. A guiding block is fixedly connected inside the vertical groove. A scraping plate (411) is fixedly connected to the rotating sleeve (410).

5. A continuous on-site treatment device for downhole sludge in oil exploitation according to claim 1, characterized in that, The guiding plugging component (2) includes a convex plug (21) located at the inner top of the conveying pipe (12). An installation plate (22) is fixedly connected to the top of the convex plug (21). An arc-shaped drainage groove (23) is formed at the bottom of the installation plate (22). A guide rod (24) hermetically sliding with the sludge collecting cylinder (41) is fixedly connected to the top of the installation plate (22).

6. The on-site continuous treatment device for downhole sludge in oil extraction according to claim 5, characterized in that, A first return spring (25) is fixedly connected between the installation plate (22) and the sludge collecting cylinder (41). A spring pin is fixedly installed on the guide rod (24). An oil conveying pipe (16) with a one-way valve inside is fixedly communicated with one side of the top of the oil production cylinder body (1). A sludge discharge port (412) penetrating through the oil production cylinder body (1) is formed at the bottom of one side of the sludge collecting cylinder (41).

7. A continuous on-site treatment device for downhole sludge in oil extraction according to claim 1, characterized in that, The oil production component (5) includes a piston block (51) slidably connected between the conveying pipe (12) and the oil production cylinder body (1). A reciprocating lead screw (52) threadedly connected with the piston block (51) is rotatably connected inside the oil production cylinder body (1). Oil inlet ports are formed at the bottom of both sides of the conveying pipe (12).

8. A downhole sludge on-site continuous treatment device applicable to oil extraction according to claim 7, characterized in that, A spline shaft (53) is rotatably installed at the bottom of the oil production cylinder body (1), and sprockets (54) are installed on both the spline shaft (53) and the reciprocating lead screw (52). The sprockets (54) are connected by a chain (55). The end of the spline shaft (53) penetrates to the outside of the filter cover (13) and a stirring rod (56) is installed.

9. The on-site continuous treatment device for downhole sludge in oil exploitation according to claim 8, wherein, The dispersed plugging component (3) includes a plugging block (31) arranged in the oil suction port. A vertical rod (32) is fixedly connected to the bottom of the plugging block (31). A U-shaped plate (33) slidable with the vertical rod (32) is welded to the bottom of the oil production cylinder body (1). An installation frame (34) slides on the spline shaft (53). Brush hairs are fixedly arranged at the bottom of the installation frame (34). The top of the installation frame (34) is rotatably connected to an installation ring fixedly connected to the vertical rod (32), and a second return spring (35) is connected between the installation ring and the U-shaped plate (33).

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