Anti-blocking oil well pump for oil exploitation

Abstract

The application relates to the technical field of oil pumps, and discloses an anti-blocking oil pump for underground oil exploitation, which comprises a pump shell and further comprises: an anti-blocking part installed on the pump shell; two protection parts, both of which are arranged on the pump shell; the anti-blocking part comprises a flushing assembly installed on the pump shell; a water pumping assembly arranged on the pump shell; the flushing assembly comprises a chute opened on the pump shell, a liquid accumulation groove is opened on the pump shell, and a connecting rod is slidably connected to the inner wall of the chute. The anti-blocking part is arranged, so that the problem that the filter plate of the traditional oil pump only serves as a one-way filtering part without a self-cleaning function, impurities filtered out continuously adhere to the surface of the filter plate and continuously accumulate, filter plate mesh holes are easily blocked, liquid inlet channels are gradually narrowed with the increase of use time, and the liquid suction efficiency of the pump body is greatly reduced is solved.

Description

Technical Field

[0001] This invention relates to the field of oil pump technology, specifically to an anti-clogging oil pump for downhole oil extraction. Background Technology

[0002] Oil well pumps are used in the downhole lifting process of various oil and gas wells. They are suitable for vertical wells, deviated wells, directional wells, and other well types. They are especially widely used in wells with complex conditions such as sand, scaling, high wax, and heavy oil. They are the core lifting equipment connecting underground crude oil with the surface gathering and transportation system. They are essential equipment from shallow wells to deep wells and from low-production wells to high-production wells, and directly determine the extraction efficiency and production stability of oil wells.

[0003] However, in the use of existing oil pumps, the filter plates of traditional oil pumps only serve as one-way filtration components and have no self-cleaning function. The filtered impurities will continue to adhere to the surface of the filter plates and accumulate, which can easily cause the filter plate mesh to become clogged. As the usage time increases, the liquid inlet channel will gradually narrow, which will significantly reduce the pump's liquid suction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-clogging oil pump for downhole oil extraction. By setting an anti-clogging part, it solves the problem that in the operation of existing oil pumps, the filter plate of the traditional oil pump only serves as a one-way filtration component and has no self-cleaning function. The filtered impurities will continue to adhere to the surface of the filter plate and accumulate, which will easily cause the filter plate mesh to become clogged. As the usage time increases, the liquid inlet channel will gradually narrow, which will significantly reduce the pump's liquid suction efficiency.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to an anti-clogging oil pump for downhole oil extraction, comprising a pump casing and further comprising: an anti-clogging part installed on the pump casing; two protective parts, both installed on the pump casing; the anti-clogging part including a flushing assembly installed on the pump casing; and a pumping assembly installed on the pump casing; the flushing assembly including a groove formed on the pump casing, the pump casing having a liquid accumulation groove, a connecting rod slidably connected to the inner wall of the groove, a sealing block fixedly connected to the bottom of the connecting rod, the sealing block being adapted to the liquid accumulation groove, a filter plate fixedly connected to the inner wall of the pump casing, and a pulling member provided inside the pump casing, the groove communicating with the liquid accumulation groove; the pulling member including a fixing frame installed inside the pump casing, a pull rod fixedly connected to the top of the fixing frame, the pull rod being connected to a drive device above.

[0007] Furthermore, the protective part includes a fixing component disposed on the pump housing; an elastic component mounted on the pump housing; and the protective part disposed on the outer wall of the pump housing.

[0008] Furthermore, the pumping assembly includes a limiting block fixedly connected to the inner wall of the pump casing, a sealing ball is provided on the limiting block, a pull-out component is provided inside the pump casing, the sealing ball is sealed to the limiting block, the pull-out component includes an air extraction block provided inside the pump casing, a sealing ball is provided inside the air extraction block, and the sealing ball is used to seal the air extraction block.

[0009] Furthermore, the fixing component includes several fixing blocks fixedly connected to the outer wall of the pump casing. Each of the fixing blocks is provided with a limiting member. There are four fixing blocks arranged in a circumferential array. The limiting member includes two limiting plates fixedly connected to the fixing blocks respectively, and the corresponding limiting plates are mirror images of each other.

[0010] Furthermore, the elastic component includes several elastic plates disposed on the pump housing, and the outer wall of the pump housing is provided with an extrusion member. There are four elastic plates, which are respectively disposed on the fixing blocks. The extrusion member includes a fixing block disposed on the outer wall of the pump housing. The fixing block is disposed on several limiting plates, and the outer wall of the fixing block is provided with an anti-collision pad.

[0011] The present invention has the following beneficial effects:

[0012] 1. This invention incorporates an anti-clogging component. During the upward pulling process, the air extraction block draws out of the pump casing, creating a negative pressure with the air pressure in the liquid accumulation tank. This negative pressure draws open the sealing ball, enabling downhole liquid intake. The oil then passes through the filter plate to filter impurities before entering the pump body. During the downward pulling process, the air extraction block presses down to reset the sealing ball, blocking the liquid intake. Simultaneously, the sealing block squeezes the oil in the liquid accumulation tank, causing it to be quickly discharged. The discharged oil forms a reverse flush on the filter plate, directly removing impurities attached to the filter plate. Utilizing the pump body's own reciprocating motion of suction and discharge, the reverse self-cleaning of the filter plate is completed simultaneously, effectively preventing the filter plate from being clogged by impurities, thus affecting the liquid intake efficiency.

[0013] 2. By incorporating a protective section, when the pump casing is lowered to the mining opening and its protruding portion impacts the protective casing, the protective casing, after being compressed, first pushes the elastic plate to undergo elastic deformation, thus initially buffering the impact through deformation-induced force relief. Simultaneously, the protective casing rotates with the impact force, further dispersing and dissipating the impact force through rotation. This achieves a coordinated action of dual buffering and force relief. The deformation and reset of the elastic plate, combined with the rotation of the protective casing, can also adapt to impacts of different angles and intensities, improving the adaptability and stability of the protection, ensuring the structural integrity of the pump body during lowering and installation, and extending the overall service life of the pump body.

[0014] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a partial cross-sectional view of the anti-blocking part of the present invention;

[0018] Figure 3 This is a partial cross-sectional view of the pumping assembly of the present invention;

[0019] Figure 4 This is a partial cross-sectional view of the protective part of the present invention;

[0020] Figure 5 This is a schematic diagram of the exploded structure of the protective part of the present invention;

[0021] Figure 6 For the present invention Figure 3 A magnified structural diagram of A in the middle;

[0022] Figure 7 For the present invention Figure 3 A magnified structural diagram of B in the diagram.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] In the diagram: 111, pump casing; 2, anti-clogging part; 21, flushing assembly; 211, chute; 212, liquid collection tank; 213, connecting rod; 214, sealing block; 215, filter plate; 216, fixing frame; 217, pull rod; 22, water pumping assembly; 221, limiting block; 222, sealing ball; 223, air extraction block; 224, sealing ball; 3, protective part; 31, fixing assembly; 311, fixing block; 312, limiting plate; 32, elastic assembly; 321, elastic plate; 322, protective shell. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-7As shown, the present invention is an anti-clogging oil pump for downhole oil extraction, including a pump casing 111, and further including: an anti-clogging part 2, which is installed on the pump casing 111; and a protective part 3, of which two are provided, both of which are provided on the pump casing 111.

[0027] The anti-clogging unit 2 includes a flushing assembly 21, which is mounted on the pump housing 111; and a pumping assembly 22, which is also mounted on the pump housing 111. The flushing assembly 21 includes a chute 211 formed on the pump housing 111, a liquid collection tank 212 formed on the pump housing 111, a connecting rod 213 slidably connected to the inner wall of the chute 211, a sealing block 214 fixedly connected to the bottom of the connecting rod 213, the sealing block 214 being adapted to the liquid collection tank 212, a filter plate 215 fixedly connected to the inner wall of the pump housing 111, and a pulling member provided inside the pump housing 111. The chute 211 communicates with the liquid collection tank 212. The pulling member includes a fixing bracket 216 provided inside the pump housing 111, and the top of the fixing bracket 216... A pull rod 217 is fixedly connected to the pump housing 111. The pull rod 217 is connected to the drive device above. The pumping assembly 22 includes a limiting block 221 fixedly connected to the inner wall of the pump housing 111. A sealing ball 222 is provided on the limiting block 221. A pull-out component is provided inside the pump housing 111. The sealing ball 222 is sealed to the limiting block 221. The pull-out component includes an air extraction block 223 provided inside the pump housing 111. A sealing ball 224 is provided inside the air extraction block 223. The sealing ball 224 is used to seal the air extraction block 223. By setting the anti-clogging part 2, the reciprocating motion of the pump body to suck and discharge liquid is used to simultaneously complete the reverse self-cleaning of the filter plate 215, effectively preventing the filter plate 215 from being blocked by the accumulation of impurities and affecting the liquid intake efficiency.

[0028] The protective part 3 includes a fixing component 31, which is disposed on the pump housing 111; and an elastic component 32, which is mounted on the pump housing 111. The protective part 3 is disposed on the outer wall of the pump housing 111. The fixing component 31 includes a plurality of fixing blocks 311 fixedly connected to the outer wall of the pump housing 111. Each of the fixing blocks 311 is provided with a limiting member. There are four fixing blocks 311 arranged in a circumferential array. The limiting members include two limiting plates 312 respectively fixedly connected to the fixing blocks 311. The corresponding limiting plates 312 are mirror images of each other. The elastic component 32 includes a plurality of elastic components disposed on the pump housing 111. The outer wall of the pump housing 111 is provided with a pressing component, and four elastic plates 321 are provided, which are respectively set on the fixing blocks 311. The pressing component includes the fixing blocks 311 set on the outer wall of the pump housing 111. The fixing blocks 311 are set on several limiting plates 312. The outer wall of the fixing blocks 311 is provided with anti-collision pads. By setting the protective part 3, the linkage action of double buffering and force relief can be realized. The deformation and reset of the elastic plate and the rotation of the protective shell 322 can also adapt to impacts of different angles and forces, improve the adaptability and stability of the protection, ensure the structural integrity during the pump body lowering and installation process, and extend the overall service life of the pump body.

[0029] It should be noted that the control of the lever 217 in this application can be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0030] In use, the pump casing 111 is first filled into the oil well opening. When the pump casing 111 falls, a bulge will appear. At this time, the bulge will come into contact with the protective shell 322. After contact, the protective shell 322 will be squeezed. At this time, the protective shell 322 will push the elastic plate 321. The elastic plate 321 will deform to a certain extent, thereby buffering the impact of the bulge on the pump casing 111. When impacted, the protective shell 322 will rotate. When the protective shell 322 rotates, it will also buffer the impact force.

[0031] After the pump housing 111 is filled to a certain position, the pull rod 217 is activated, causing the pull rod 217 to pull the fixed frame 216 upward. As the fixed frame 216 moves upward, the suction block 223 also moves upward, extracting the air pressure from the pump housing 111. At this time, the connecting rod 213, along with the sealing block 214, moves within the slide groove 211, thus ensuring that both the pump housing 111 and the liquid accumulation tank 212 are filled with air. A negative pressure is created, causing the sealing ball 222 to be drawn upwards. As the sealing ball 222 disengages from the limiting block 221, oil from the well is drawn into the pump casing 111. Upon entering the pump casing 111, the oil first contacts the filter plate 215, which filters out impurities. The oil then enters the accumulator 212 and the pump casing 111, passing through the limiting block 221. When the lever 217 moves to the top of the position block 221, it will move downward again. When the lever 217 moves, it will bring the fixing frame 216 and the suction block 223 downward with it. At this time, the downward compression of the suction block 223 will push the sealing ball 222 back into the limiting block 221, thereby sealing the limiting block 221. After the sealing is completed, the sealing ball 224 will be squeezed out and move upward. At this time, the suction block 223 will be opened. After it is opened, the oil will be extracted along with the suction block 223 and the pump housing 111. When the fixing frame 216 moves downward, the connecting rod 213 will also slide in the slide groove 211. At this time, the sealing block 214 will squeeze the oil in the liquid accumulation tank 212. The oil will be squeezed out and quickly discharged from the feed port. When discharged, it will backwash the filter plate 215, thereby washing away the impurities on the filter plate 215, thus achieving the anti-clogging effect.

[0032] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A clog-resistant oil pump for downhole oil extraction, comprising a pump casing (111), characterized in that, Also includes: Anti-clogging part (2), said anti-clogging part (2) is installed on pump casing (111); The protective part (3) is provided in two parts, and both protective parts (3) are provided on the pump casing (111); The anti-clogging part (2) includes a flushing assembly (21), which is mounted on the pump housing (111); as well as A pumping assembly (22) is mounted on a pump housing (111); The flushing assembly (21) includes a groove (211) formed on the pump housing (111), a liquid collection groove (212) formed on the pump housing (111), a connecting rod (213) slidably connected to the inner wall of the groove (211), a sealing block (214) fixedly connected to the bottom of the connecting rod (213), the sealing block (214) being adapted to the liquid collection groove (212), a filter plate (215) fixedly connected to the inner wall of the pump housing (111), and a pulling member provided inside the pump housing (111). The chute (211) is connected to the liquid accumulation tank (212).

2. The anti-clogging oil pump for downhole oil extraction according to claim 1, characterized in that, The protective part (3) includes a fixing component (31) disposed on the pump housing (111); and An elastic component (32) is mounted on the pump housing (111); The protective part (3) is located on the outer wall of the pump casing (111).

3. The anti-clogging oil pump for downhole oil extraction according to claim 1, characterized in that, The pumping assembly (22) includes a limiting block (221) fixedly connected to the inner wall of the pump housing (111), a sealing ball (222) is provided on the limiting block (221), and a pull-out component is provided inside the pump housing (111); The sealing ball (222) and the limiting block (221) are sealed together.

4. The anti-clogging oil pump for downhole oil extraction according to claim 2, characterized in that, The fixing component (31) includes a plurality of fixing blocks (311) fixedly connected to the outer wall of the pump housing (111), and each of the plurality of fixing blocks (311) is provided with a limiting member; Four fixed blocks (311) are provided and arranged in a circular array.

5. The anti-clogging oil pump for downhole oil extraction according to claim 2, characterized in that, The elastic component (32) includes a plurality of elastic plates (321) disposed on the pump housing (111), and the outer wall of the pump housing (111) is provided with an extrusion member; Four elastic plates (321) are provided and are respectively installed on the fixed block (311).

6. The anti-clogging oil pump for downhole oil extraction according to claim 1, characterized in that, The tensioning component includes a fixing frame (216) disposed inside the pump housing (111), and a tie rod (217) is fixedly connected to the top of the fixing frame (216). The pull rod (217) is connected to the drive device above.

7. The anti-clogging oil pump for downhole oil extraction according to claim 3, characterized in that, The pull-out component includes an air extraction block (223) disposed inside the pump housing (111), and a sealing ball (224) is disposed inside the air extraction block (223). The sealing ball (224) is used to seal the vacuum block (223).

8. The anti-clogging oil pump for downhole oil extraction according to claim 4, characterized in that, The limiting component includes two limiting plates (312) that are respectively fixedly connected to a plurality of fixing blocks (311). The corresponding limit plate (312) is set in a mirror image.

9. The anti-clogging oil pump for downhole oil extraction according to claim 5, characterized in that, The extrusion component includes a fixing block (311) disposed on the outer wall of the pump housing (111), and the fixing block (311) is disposed on a plurality of limiting plates (312); The outer wall of the fixing block (311) is provided with anti-collision pads.

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