Water injection device for oil reservoir

Abstract

The utility model relates to the technical field of oil reservoir exploitation, and discloses an oil reservoir water injection device which comprises a filter box, a water injection pipe with one end extending into the filter box is arranged at the top of the filter box, and a pressure pump is arranged at the bottom of the filter box. According to the water injection device for the oil reservoir, two second positioning blocks are moved out from the interiors of two second positioning grooves by screwing two second hand wheels, so that fixing of two connecting blocks is relieved, and at the moment, a side plate can be pulled leftwards to be detached, so that the water injection device is convenient to use. Then, two first positioning blocks can be moved out from the interiors of two first positioning grooves by screwing a first hand wheel, so that fixation of two mounting frames is relieved, at the moment, the two mounting frames can be pulled out leftwards from the interior of the filter box through two handles, and a first filter screen and a second filter screen are detached; and finally, the purpose of conveniently disassembling the filter screen is achieved, and then the filter screen can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of oil reservoir exploitation, in particular to a water injection device for an oil reservoir. Background Art

[0002] After an oil field is put into development, as the exploitation time increases, the energy of the oil layer itself will be continuously consumed, causing the oil layer pressure to continuously decrease, a large amount of underground crude oil to be degassed, the viscosity to increase, the oil well production to be greatly reduced, and even the spraying and production will be stopped, resulting in a large amount of dead oil remaining underground that cannot be produced. In order to make up for the underground deficit caused by the extraction of crude oil, maintain or increase the oil layer pressure, achieve high and stable production of the oil field, and obtain a higher recovery rate, the oil field must be injected with water. In the process of water injection exploitation, in order to ensure sufficient water volume and protect the environment, the water source used is usually produced water from the oil field. However, since the produced water from the oil field often contains some impurities, such as siltstone and fine sandstone, in order to avoid the situation where impurities block the oil layer pores, a filter is usually set in the water injection device to filter the injected water. However, in the actual use of the existing water injection device, since the filter is mostly set inside the device, it is not convenient to disassemble, resulting in inconvenience for cleaning the filter, which is not conducive to use. Therefore, a water injection device for oil reservoirs is proposed. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a water injection device for an oil reservoir, which has the advantages of easy disassembly of the filter screen, etc., and solves the problem that in actual use of the existing water injection device, the filter screen is mostly arranged inside the device and is not convenient to disassemble, resulting in inconvenience in cleaning the filter screen, which is not conducive to use.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose of facilitating the disassembly of the filter screen, the utility model provides the following technical solutions: a water injection device for an oil reservoir comprises a filter box, a water injection pipe with one end extending into the interior of the filter box is arranged on the top of the filter box, a pressure pump is arranged on the bottom of the filter box, the input end of the pressure pump extends into the interior of the filter box, an oil pipe is arranged on the output end of the pressure pump, a one-way valve is arranged on the outside of the oil pipe, a mounting plate is arranged inside the filter box, rectangular strip holes are arranged on the upper and lower ends of the left side of the mounting plate, and two holes are arranged on the right side of the inner wall of the filter box, which are respectively located at A rectangular groove on the right side of the two rectangular strip holes, two mounting frames are arranged between the front and rear sides of the inner wall of the filter box, one end of which extends to the inside of the two rectangular strip holes respectively and the other end of which extends to the inside of the two rectangular strip holes respectively, a first filter net is arranged inside the top mounting frame, and a second filter net is arranged inside the bottom mounting frame, and a handle is arranged on the left side of the two mounting frames, and the inner bottom wall of the top rectangular strip hole and the inner top wall of the bottom rectangular strip hole are connected with a mounting hole arranged on the mounting plate, and two fixing blocks symmetrically distributed up and down are arranged inside the mounting hole, and a first threaded rod with one end extending to the bottom of the bottom fixing block is arranged on the top of the top fixing block, and a first positioning groove is arranged on the left ends of the opposite sides of the two mounting frames, and a first positioning block with one end threadedly connected to the outer side of the first threaded rod and the other end extending to the inside of the two first positioning grooves is arranged on the upper and lower sides of the inner wall of the mounting hole, and a driving component with one end movably connected to the right side of the inner wall of the mounting hole and the other end extending to the left side of the mounting plate is arranged on the outer side of the first threaded rod, and an annular groove is arranged on the left side of the filter box, and a sealing ring is arranged inside the annular groove, and the sealing ring A side plate with one end fitted with the left side of the filter box is provided on the left side of the ring, and mounting blocks are provided on the left ends of the upper and lower sides of the filter box, and connecting grooves are provided on the left sides of the two mounting blocks, and connecting blocks with one end fixedly connected to the right side of the side plate are provided inside the two connecting grooves, and mounting cavities are provided inside the two mounting blocks, which are respectively located on the opposite sides of the two connecting grooves, and second positioning grooves are provided on the opposite sides of the two connecting blocks, and positioning components are provided inside the two mounting cavities, one end of which extends to the inside of the two second positioning grooves and the other end extends to the opposite sides of the two mounting blocks.

[0007] Preferably, the drive assembly includes a worm gear, a worm gear located between two fixed blocks is fixedly mounted on the outer side of the first threaded rod, a worm screw having one end meshing with the worm gear and the other end extending to the left side of the mounting plate is movably mounted on the right side of the inner wall of the mounting hole, and a first handwheel is fixedly mounted on the left side of the worm screw.

[0008] Preferably, the positioning assembly includes a slider, a slider is movably installed inside the two mounting cavities, second positioning blocks are fixedly installed on opposite sides of the two sliders, one end of which extends to the inside of the two second positioning grooves respectively, the opposite sides of the two mounting blocks are threadedly connected to second threaded rods with one end extending to the inside of the two mounting cavities respectively and movably connected to the opposite sides of the two sliders respectively, and second hand wheels are fixedly installed on the opposite sides of the two second threaded rods.

[0009] Preferably, a connecting hole is opened inside the two fixing blocks, and a first bearing is fixedly installed inside the two connecting holes, and the first threaded rod is rotatably connected to the fixing block through the first bearing.

[0010] Preferably, the outer side of the first threaded rod is provided with two sections of threads, and the two sections of threads are of equal length and opposite directions, and the opposite sides of the two first positioning blocks are provided with thread grooves adapted to the first threaded rod.

[0011] Preferably, a second bearing located between two fixed blocks is fixedly mounted on the right side of the inner wall of the mounting hole, and the worm is rotationally connected to the right side of the inner wall of the mounting hole via the second bearing.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a water injection device for an oil reservoir, which has the following beneficial effects:

[0014] The two second positioning blocks can be moved relative to each other by turning the two second hand wheels to make the two second positioning blocks move out of the two second positioning grooves respectively, thereby releasing the fixation of the two connecting blocks. At this time, the side plate can be pulled leftward to remove the side plate, and then the worm can be driven to rotate by turning the first hand wheel, and then the first threaded rod can be driven to rotate by the worm wheel. During the rotation of the first threaded rod, the two first positioning blocks can be driven to move relative to each other to make the two first positioning blocks move out of the two first positioning grooves respectively, thereby releasing the fixation of the two mounting frames. At this time, the two mounting frames can be pulled out to the left from the interior of the filter box by the two handles, so as to remove the first filter screen and the second filter screen, finally achieving the purpose of facilitating the disassembly of the filter screen, thereby facilitating the cleaning operation of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the local structure of the connection between the filter box and the side plate of the utility model;

[0017] Figure 3 This is a partial schematic diagram of a top installation frame of the utility model viewed from above and in section;

[0018] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 5 For this utility model Figure 2 Enlarged view of point B in the middle;

[0020] Figure 6 It is a partial schematic diagram of a side cross-section of the sealing ring of the utility model.

[0021] In the figure: 1 filter box, 2 water injection pipe, 3 pressure pump, 4 oil pipe, 5 check valve, 6 mounting plate, 7 rectangular strip hole, 8 rectangular groove, 9 mounting frame, 10 first filter screen, 11 second filter screen, 12 handle, 13 mounting hole, 14 fixing block, 15 first threaded rod, 16 first positioning groove, 17 first positioning block, 18 driving assembly, 181 worm gear, 182 worm, 183 first hand wheel, 19 annular groove, 20 sealing ring, 21 side plate, 22 mounting block, 23 connecting groove, 24 connecting block, 25 mounting cavity, 26 second positioning groove, 27 positioning assembly, 271 slider, 272 second positioning block, 273 second threaded rod, 274 second hand wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-6 The utility model provides a technical solution: a water injection device for an oil reservoir, comprising a filter box 1, the left side of the filter box 1 is designed as an opening, a water injection pipe 2 with one end extending into the interior thereof is fixedly installed on the top of the filter box 1, a pressure pump 3 is fixedly installed on the bottom of the filter box 1, the input end of the pressure pump 3 extends into the interior of the filter box 1, an oil pipe 4 is fixedly installed on the output end of the pressure pump 3, and a one-way valve 5 is fixedly installed on the outside of the oil pipe 4.

[0024] A mounting plate 6 is fixedly installed inside the filter box 1, and rectangular strip holes 7 are provided at the upper and lower ends of the left side of the mounting plate 6. The front and rear sides of the inner walls of the two rectangular strip holes 7 are both open. Two rectangular grooves 8 are provided on the right side of the inner wall of the filter box 1 and are respectively located on the right sides of the two rectangular strip holes 7. Two mounting frames 9 are movably installed between the front and rear sides of the inner wall of the filter box 1, and one end extends to the inside of the two rectangular grooves 8 and the other end extends to the inside of the two rectangular strip holes 7. The upper and lower left ends of the mounting frames 9 are movably connected to the upper and lower sides of the inner walls of the rectangular strip holes 7, respectively. A first filter screen 10 is fixedly installed inside the top mounting frame 9, and a second filter screen 11 is fixedly installed inside the bottom mounting frame 9. The aperture of the filter hole of the second filter screen 11 is smaller than the aperture of the filter hole of the first filter screen 10. The filtering effect is improved by arranging two filter screens. Handles 12 are fixedly installed on the left sides of the two mounting frames 9.

[0025] The inner bottom wall of the top rectangular bar hole 7 and the inner top wall of the bottom rectangular bar hole 7 are connected with a mounting hole 13 opened on the mounting plate 6, and two fixing blocks 14 symmetrically distributed up and down are fixedly installed inside the mounting hole 13, and a first threaded rod 15 with one end extending to the bottom of the bottom fixing block 14 is movably installed on the top of the top fixing block 14, and connecting holes are provided inside the two fixing blocks 14, and first bearings are fixedly installed inside the two connecting holes, and the first threaded rod 15 is rotatably connected to the fixing block 14 through the first bearing, and first positioning grooves 16 are provided at the left ends of the opposite sides of the two mounting frames 9, and first positioning blocks 17 with one end threadedly connected to the outer side of the first threaded rod 15 and the other end extending to the inside of the two first positioning grooves 16 are movably installed on the upper and lower sides of the interior of the mounting hole 13, and two sections of threads are provided on the outer side of the first threaded rod 15, and the two sections of threads are equal in length and opposite in direction, and thread grooves matching the first threaded rod 15 are provided on the opposite sides of the two first positioning blocks 17.

[0026] A driving assembly 18 is fixedly installed on the outer side of the first threaded rod 15, and one end of the driving assembly 18 is movably connected to the right side of the inner wall of the mounting hole 13 and the other end of the driving assembly 18 extends to the left side of the mounting plate 6. The driving assembly 18 includes a worm gear 181. The outer side of the first threaded rod 15 is fixedly installed with a worm gear 181 located between the two fixed blocks 14. A worm 182 is movably installed on the right side of the inner wall of the mounting hole 13, and one end of the worm gear 181 is meshed with the worm gear 181 and the other end of the worm 182 extends to the left side of the mounting plate 6. A second bearing located between the two fixed blocks 14 is fixedly installed on the right side of the inner wall of the mounting hole 13. The worm 182 is rotatably connected to the right side of the inner wall of the mounting hole 13 through the second bearing, and a first hand wheel 183 is fixedly installed on the left side of the worm 182.

[0027] An annular groove 19 is provided on the left side of the filter box 1, and a sealing ring 20 is movably installed inside the annular groove 19. A side plate 21 with one end fitted to the left side of the filter box 1 is fixedly installed on the left side of the sealing ring 20. Mounting blocks 22 are fixedly installed on the left ends of the upper and lower sides of the filter box 1. Connecting grooves 23 are provided on the left sides of the two mounting blocks 22. Connecting blocks 24 with one end fixedly connected to the right side of the side plate 21 are movably installed inside the two connecting grooves 23. Mounting cavities 25 located on the opposite sides of the two connecting grooves 23 are provided inside the two mounting blocks 22, and second positioning grooves 26 are provided on the opposite sides of the two connecting blocks 24.

[0028] A positioning assembly 27 is movably installed inside the two mounting cavities 25, and one end of the positioning assembly 27 extends to the inside of the two second positioning grooves 26 and the other end of the positioning assembly 27 extends to the opposite sides of the two mounting blocks 22. The positioning assembly 27 includes a slider 271. The slider 271 is movably installed inside the two mounting cavities 25. The opposite sides of the two sliders 271 are fixedly installed with second positioning blocks 272 with one end extending to the inside of the two second positioning grooves 26. The opposite sides of the two mounting blocks 22 are threadedly connected with second threaded rods 273 with one end extending to the inside of the two mounting cavities 25 and movably connected to the opposite sides of the two sliders 271. The opposite sides of the two mounting blocks 22 are provided with threaded holes respectively matched with the two second threaded rods 273. The opposite sides of the two sliders 271 are fixedly installed with third bearings. The second threaded rod 273 is rotatably connected to the slider 271 through the third bearing, and the opposite sides of the two second threaded rods 273 are fixedly installed with second hand wheels 274.

[0029] When in use, the bottom of the oil pipe 4 is inserted into the oil layer, and then the produced water of the oil field is injected into the interior of the filter box 1 through the water injection pipe 2, so as to filter impurities such as siltstone and fine sandstone in the water through the first filter screen 10 and the second filter screen 11, and then the pressure pump 3 is started by the external controller to transport the filtered water in the filter box 1 to the interior of the oil pipe 4, and then into the oil layer, so as to increase the pressure of the oil layer, thereby achieving high and stable production of the oil field. When it is necessary to clean the impurities attached to the first filter screen 10 and the second filter screen 11, the two second threaded rods 273 can be driven to rotate by twisting the two second hand wheels 274, so as to drive the two sliders 271 and the two second positioning blocks 272 to move away from each other, so that the two second positioning blocks 272 can be moved from The two second positioning grooves 26 are moved out, thereby releasing the fixation of the two connecting blocks 24. At this time, the side panel 21 can be pulled to the left to remove the side panel 21, and then the worm 182 can be driven to rotate by turning the first hand wheel 183, and then the first threaded rod 15 can be driven to rotate through the worm wheel 181. During the rotation process, the first threaded rod 15 will drive the two first positioning blocks 17 to move relative to each other, so that the two first positioning blocks 17 are respectively moved out of the two first positioning grooves 16, thereby releasing the fixation of the two mounting frames 9. At this time, the two mounting frames 9 can be pulled out to the left from the inside of the filter box 1 through the two handles 12, so as to remove the first filter screen 10 and the second filter screen 11, thereby facilitating the cleaning operation of the filter screen.

[0030] In summary, the water injection device of the oil reservoir drives the two second threaded rods 273 to rotate by turning the two second hand wheels 274, thereby driving the two sliders 271 and the two second positioning blocks 272 to move in opposite directions, so that the two second positioning blocks 272 are respectively moved out of the inside of the two second positioning grooves 26, thereby releasing the fixation of the two connecting blocks 24, and then the side plate 21 can be pulled to the left to remove the side plate 21, and then the worm 182 can be driven to rotate by turning the first hand wheel 183, and then the first threaded rod 15 can be driven to rotate through the worm wheel 181, and the first threaded rod 15 will drive the two first The positioning blocks 17 move relative to each other to make the two first positioning blocks 17 move out from the inside of the two first positioning grooves 16 respectively, thereby releasing the fixation of the two mounting frames 9. At this time, the two mounting frames 9 can be pulled out to the left from the inside of the filter box 1 through the two handles 12, so as to remove the first filter screen 10 and the second filter screen 11, thereby finally achieving the purpose of facilitating the disassembly of the filter screen, and then facilitating the cleaning operation of the filter screen, solving the problem that in the actual use of the existing water injection device, since the filter screen is mostly arranged inside the device, it is not convenient to disassemble, resulting in inconvenience for cleaning the filter screen, which is not conducive to use.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water injection device for an oil reservoir, comprising a filter box (1), a water injection pipe (2) having one end extending into the interior of the filter box (1) being arranged at the top of the filter box (1), a pressure pump (3) being arranged at the bottom of the filter box (1), an input end of the pressure pump (3) extending into the interior of the filter box (1), an oil pipe (4) being arranged at the output end of the pressure pump (3), a non-return valve (5) being arranged on the outside of the oil pipe (4), a mounting plate (6) being arranged inside the filter box (1), rectangular strip holes (7) being arranged at both the upper and lower ends of the left side of the mounting plate (6), and the pipe (4) being arranged at the bottom of the filter box (1). The right side of the inner wall of the filter box (1) is provided with two rectangular grooves (8) respectively located on the right side of the two rectangular strip holes (7); between the front and rear sides of the inner wall of the filter box (1) are two mounting frames (9) respectively extending into the inside of the two rectangular grooves (8) and the other end extending into the inside of the two rectangular strip holes (7); a first filter screen (10) is arranged inside the top mounting frame (9); a second filter screen (11) is arranged inside the bottom mounting frame (9); handles (12) are arranged on the left sides of the two mounting frames (9); Features: A mounting hole (13) arranged on the mounting plate (6) is connected between the inner bottom wall of the rectangular strip hole (7) at the top and the inner top wall of the rectangular strip hole (7) at the bottom. Two fixing blocks (14) symmetrically distributed up and down are arranged inside the mounting hole (13). A first threaded rod (15) having one end extending to the bottom of the bottom fixing block (14) is arranged at the top of the fixing block (14). First positioning grooves (16) are arranged at the left ends of the opposite sides of the two mounting frames (9). First positioning blocks (17) having one end threadedly connected to the outer side of the first threaded rod (15) and the other end extending to the inside of the two first positioning grooves (16) are arranged on the upper and lower sides of the interior of the mounting hole (13). A driving component (18) having one end movably connected to the right side of the inner wall of the mounting hole (13) and the other end extending to the left side of the mounting plate (6) is arranged on the outer side of the first threaded rod (15). The left side of the filter box (1) An annular groove (19) is provided, a sealing ring (20) is provided inside the annular groove (19), a side plate (21) having one end in contact with the left side of the filter box (1) is provided on the left side of the sealing ring (20), mounting blocks (22) are provided on the left ends of the upper and lower sides of the filter box (1), connecting grooves (23) are provided on the left sides of the two mounting blocks (22), connecting blocks (24) having one end fixedly connected to the right side of the side plate (21) are provided inside the two connecting grooves (23), mounting cavities (25) are provided inside the two mounting blocks (22) and are located on opposite sides of the two connecting grooves (23), second positioning grooves (26) are provided on opposite sides of the two connecting blocks (24), and positioning components (27) are provided inside the two mounting cavities (25) and have one end extending into the inside of the two second positioning grooves (26) and the other end extending to opposite sides of the two mounting blocks (22).

2. A water injection device for an oil reservoir according to claim 1, Features: The driving assembly (18) comprises a worm wheel (181), the worm wheel (181) being fixedly mounted on the outer side of the first threaded rod (15) and being located between two fixed blocks (14), a worm (182) having one end meshing with the worm wheel (181) and the other end extending to the left side of the mounting plate (6) being movably mounted on the right side of the inner wall of the mounting hole (13), the worm (182) having one end meshing with the worm wheel (181) and the other end extending to the left side of the mounting plate (6), and a first hand wheel (183) being fixedly mounted on the left side of the worm (182).

3. The water injection device for an oil reservoir according to claim 1, Features: The positioning assembly (27) comprises a slider (271), the sliders (271) are movably mounted inside the two installation cavities (25), second positioning blocks (272) are fixedly mounted on opposite sides of the two sliders (271), one end of which extends into the inside of the two second positioning grooves (26), respectively, the opposite sides of the two installation blocks (22) are threadedly connected to second threaded rods (273), one end of which extends into the inside of the two installation cavities (25) and is movably connected to the opposite sides of the two sliders (271), and second hand wheels (274) are fixedly mounted on the opposite sides of the two second threaded rods (273).

4. The water injection device for an oil reservoir according to claim 1, Features: The two fixing blocks (14) are each provided with a connection hole, and the first bearing is fixedly installed inside the two connection holes, and the first threaded rod (15) is rotatably connected to the fixing block (14) via the first bearing.

5. The water injection device for an oil reservoir according to claim 1, Features: The outer side of the first threaded rod (15) is provided with two sections of threads, which are of equal length and opposite directions, and the opposite sides of the two first positioning blocks (17) are provided with thread grooves adapted to the first threaded rod (15).

6. The water injection device for an oil reservoir according to claim 2, Features: A second bearing located between two fixing blocks (14) is fixedly mounted on the right side of the inner wall of the mounting hole (13), and the worm (182) is rotatably connected to the right side of the inner wall of the mounting hole (13) via the second bearing.

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