Spiral-flow type water injector with bypass valve

Abstract

The utility model belongs to the technical field of water injectors, and relates to a spiral-flow type water injector with a bypass valve, which comprises a shell, a spiral-flow shell and a water outlet which are communicated with the shell are respectively arranged at the upper end and the lower end of the shell, a turbine fan is rotatably connected in the shell close to the water outlet, and a material port and an oil outlet pipe are arranged on the spiral-flow shell. A flow guide cover is arranged at the end, located in the rotational flow shell, of the oil outlet pipe, a transverse frame is fixedly connected into the flow guide cover, a flow meter is rotationally connected to the transverse frame, and a bypass valve assembly is arranged on the oil outlet pipe. Through cooperation of the shell and the rotational flow shell, injected water forms a high-speed rotational flow state, erosive wear of water flow to a stratum can be reduced, the risk of stratum blockage caused by impurity deposition is reduced, even diffusion of the injected water in an oil layer can be promoted, the water flooding sweep efficiency is improved, local water channeling is avoided, and the service life of the oil reservoir is prolonged. And the feeding flow can be dynamically adjusted in real time according to the pressure of the water outlet end, and the stability of the oil-water separation and water injection process is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of water injector technology and relates to a vortex water injector with a bypass valve. Background Technology

[0002] After an oil field is put into development, as the extraction time extends, the reservoir's own energy is continuously consumed, leading to a gradual decrease in reservoir pressure. During this process, a large amount of underground crude oil degassing occurs, and the crude oil viscosity increases significantly, directly causing a sharp decline in well production. In severe cases, this can even lead to well shutdown and production stoppage, resulting in a large amount of unrecoverable residual oil underground. To effectively compensate for the underground deficit formed after crude oil extraction, maintain and increase reservoir pressure, ensure long-term high and stable production of the oil field, and improve crude oil recovery, water injection into the reservoir becomes a necessary measure.

[0003] Among them, CN220226835U discloses "an oilfield water injection device". By rotating the torsion plug, the threaded shaft is driven to rotate, thereby causing the internal threaded pipe to move longitudinally on the surface of the rotating threaded shaft. This pushes the longitudinal support sleeve and the top flange to move, causing the water injection sleeve and the water injection telescopic liner to slide and expand. This allows the limit sleeve and the limit rod to slide and expand, thereby achieving the effect of facilitating the expansion and contraction adjustment of the structure at the end of the injection channel. It is also beneficial to make adaptive adjustments according to the water injection supporting equipment and environmental factors, thus improving the flexibility.

[0004] The publication number CN202221140087.9 discloses "a filter device for oilfield water injection equipment". The filter disc and the straight rod are installed by insertion and insertion, and the straight rod and the filter main shaft are installed by abutting. This can ensure the firmness after installation and effectively avoid the filter disc and the main shaft from being difficult to disassemble under long-term use, thus improving the convenience of disassembling the filter disc.

[0005] The two published patents mentioned above lack efficient flow optimization design. The injected water tends to impact the formation in a direct flow pattern, which not only aggravates the erosion and wear of the formation, but also easily leads to the local deposition of impurities, causing formation blockage and affecting the smoothness of the water injection channel. Furthermore, the filter components are prone to failure due to the accumulation of impurities, requiring frequent shutdowns for cleaning, which affects the overall operating efficiency and stability. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a vortex-type water injector with a bypass valve.

[0007] The swirl-type water injector with bypass valve of this utility model includes a housing, with a swirl shell and a water outlet respectively connected to the upper and lower ends of the housing. A turbine fan is rotatably connected inside the housing near the water outlet. A material inlet and an oil outlet pipe are provided on the swirl shell. A flow guide is provided at one end of the oil outlet pipe located inside the swirl shell. A cross frame is fixedly connected inside the flow guide, and a flow meter is rotatably connected on the cross frame. A bypass valve assembly is provided on the oil outlet pipe.

[0008] The bypass valve assembly includes a tee connected to the oil outlet pipe. A partition is fixedly installed inside the tee. A pull rod that passes through the partition is slidably connected to the partition. A magnetic block is fixedly connected to the top of the pull rod. A solenoid valve that matches the magnetic block is provided on the tee. A spring that matches the solenoid valve and the magnetic block is provided inside the tee. A sealing block that matches the tee is provided at the bottom of the pull rod. A sealing gasket is provided on the sealing block.

[0009] The housing contains a filter assembly adapted to the turbine fan.

[0010] The filter assembly includes a shroud fixed inside the housing, a filter plate rotatably connected inside the shroud, a turbine fan fixedly connected to the filter plate, a drain pipe fixedly connected to the side of the shroud and extending through the side of the housing, and an electromagnetic valve installed at one end of the drain pipe.

[0011] An annular tube is fixedly connected to the outer side of the housing, and several nozzles are installed through the annular tube, with the spray end of each nozzle corresponding to the filter plate.

[0012] The nozzles are all angled downwards at 15-30°, and the upper surface of the filter plate is curved.

[0013] The outlet is equipped with a pressure sensor, and the feed inlet is equipped with a flow controller. The feed inlet controls the flow rate of water injected into the oil well through the cooperation of the pressure sensor and the flow controller.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes the combination of the shell and the vortex shell to create a high-speed rotating flow of injected water. This reduces the scouring and abrasion of the formation caused by the water flow, minimizes the risk of formation blockage caused by impurity deposition, promotes uniform diffusion of injected water within the oil layer, improves the water drive sweep efficiency, and prevents localized water channeling, thereby effectively ensuring the enhanced oil recovery rate. Simultaneously, the pressure sensor in the outlet and the flow controller in the feed port work together to dynamically adjust the feed flow rate in real time based on the pressure at the outlet, ensuring the stability of the oil-water separation and water injection process. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0017] Figure 2 This is a schematic cross-sectional view of a three-way valve according to an embodiment of the present invention.

[0018] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of the present invention.

[0019] Figure 4 This is a utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] Figure 5 This is a schematic diagram of the structure of the filter component in one embodiment of the present invention.

[0021] Figure 6 This is a cross-sectional structural schematic diagram of a crossbeam according to an embodiment of the present invention.

[0022] In the diagram: 1. Swirl shell; 2. Inlet; 3. Shell; 4. Outlet; 5. Oil outlet; 6. Tee; 7. Solenoid valve; 8. Spring; 9. Magnetic block; 10. Partition block; 11. Tie rod; 12. Sealing gasket; 13. Sealing block; 14. Flow guide; 15. Flow meter; 16. Horizontal frame; 17. Solenoid valve; 18. Drain pipe; 19. Partition cover; 20. Filter plate; 21. Turbine fan; 22. Annular pipe; 23. Nozzle. Detailed Implementation

[0023] Example 1

[0024] like Figures 1-6As shown, the vortex-type water injector with bypass valve of this utility model includes a housing 3. The housing 3 has a vortex shell 1 and a water outlet 4 connected to its upper and lower ends, respectively. A turbine fan 21 is rotatably connected inside the housing 3 near the water outlet 4. The vortex shell 1 has a feed inlet 2 and an oil outlet pipe 5. A guide shroud 14 is provided at one end of the oil outlet pipe 5 inside the vortex shell 1. A crossbeam 16 is fixedly connected inside the guide shroud 14, and a flow meter 15 is rotatably connected to the crossbeam 16. A bypass valve assembly is provided on the oil outlet pipe 5. The bypass valve assembly includes a three-way valve 6 connected to the oil outlet pipe 5. A partition block 10 is fixedly installed inside the three-way valve 6. A pull rod 11, penetrating the partition block 10, is slidably connected to the partition block 10. A magnet 9 is fixedly connected to the top of the pull rod 11. A solenoid valve 7 adapted to the magnet 9 is provided on the three-way valve 6. A spring 8 adapted to the solenoid valve 7 and the magnet 9 is provided inside the three-way valve 6. A spring 8 adapted to the three-way valve 6 is provided at the bottom of the pull rod 11. The sealing block 13 has a sealing gasket 12. The sealing block 13 slides with the pull rod 11 and cooperates with the two sealing gaskets 12 to achieve bypass oil output, thereby maintaining the internal pressure of the vortex water injector. Different currents are introduced through the solenoid valve 7, which can attract the magnetic block 9 and make the pull rod 11 slide in the partition block 10. The spring 8 is sleeved on the outer surface of the working end of the solenoid valve 7 and the magnetic end of the magnetic block 9. The spring 8 is made of copper and can push the magnetic block 9, thereby resetting the sealing block 13. The oil extracted from the outside, which is mixed with water, is transported to the vortex shell 1 by the pump body and the feed port 2, generating a vortex. The oil mixture swirls inside the shell 3. The oil is output from the oil outlet pipe 5, and the water is output from the water outlet 4. The water outlet 4 is connected to the oil well, and water is injected into the oil well for further use.

[0025] The housing 3 is equipped with a filter assembly adapted to the turbine fan 21. The filter assembly includes a shroud 19 fixed inside the housing 3, a filter plate 20 rotatably connected inside the shroud 19, the turbine fan 21 fixedly connected to the filter plate 20, and a drain pipe 18 penetrating the side of the housing 3 fixedly connected to the side of the shroud 19. An electromagnetic valve 17 is provided at one end of the drain pipe 18. The water after swirling contains impurities, which can easily cause wear and blockage of the pipe when injected into the oil well. The filter plate 20 in the filter assembly can filter the impurities in the water. The upper surface of the filter plate 20 is arc-shaped. With the water flow driving the turbine fan 21 to rotate, the filter plate 20 rotates, causing the impurities attached to the surface of the filter plate 20 to diffuse to both sides, preventing them from concentrating in the middle and affecting the filtration and water flow effect.

[0026] An annular pipe 22 is fixedly connected to the outer side of the housing 3. Several nozzles 23 are provided through the housing 3 on the annular pipe 22. The spraying end of each nozzle 23 corresponds to the filter plate 20. The nozzles 23 are all angled downward at 15-30°. The upper surface of the filter plate 20 is arc-shaped. The filter plate 20 is connected to an external water source through the annular pipe 22. The multiple nozzles 23 are all angled downward at 30°, which can spray external water onto the surface of the filter plate 20, thereby cleaning and rinsing the surface of the filter plate 20. Furthermore, by opening the solenoid valve 17, impurities can flow out through the drain pipe 18.

[0027] The outlet 4 is equipped with a pressure sensor, and the inlet 2 is equipped with a flow controller. The flow rate of water injected into the oil well is controlled by the cooperation of the pressure sensor and the flow controller.

[0028] Working process or working principle:

[0029] During operation, the oil containing water extracted from external sources is pumped to the inlet 2 of the hydrocyclone injector. Upon entering the hydrocyclone shell 1, it forms a vortex. Under the guiding action of the shell 3, the oil mixture undergoes hydrocyclone separation. The separated oil is output along the oil outlet pipe 5, while the water flows to the outlet 4 at the end of the shell 3 and is injected into the oil well. During this process, a pressure sensor inside the outlet 4 monitors the pressure at the outlet in real time, and a flow controller inside the inlet 2 adjusts the feed flow rate based on the pressure data to ensure stable separation efficiency. Simultaneously, as the water flows through the filter assembly, the filter plate 20 inside the diaphragm 19 filters impurities in the water. The water flow impacts the turbine fan 21 below the diaphragm 19, causing the turbine fan 21 and the filter plate 20 to rotate synchronously, diffusing impurities to both sides of the filter plate 20 and preventing blockage in the middle. If it is necessary to clean impurities, an external water source can be connected through the annular pipe 22, and the water can be discharged through a nozzle 2 set at a downward angle of 30°. 3. Water is sprayed onto the surface of the filter plate 20, and the solenoid valve 17 at the end of the drain pipe 18 is opened to allow impurities to be discharged with the water flow. When the oil output from the oil outlet pipe 5 flows through the guide shroud 14, the flow meter 15 on the cross frame 16 monitors the oil flow and pressure in real time and feeds the data back to the control system of the bypass valve assembly. When the internal pressure of the vortex injector is abnormal, the control system adjusts the current of the solenoid valve 7 on the outside of the three-way 6. The solenoid valve 7 magnetically attracts the magnetic block 9 at the end of the pull rod 11, causing the pull rod 11 to slide in the partition block 10, so that the sealing block 13 at one end of the pull rod 11 is separated from or attached to the sealing gasket 12 on the inner wall of the three-way 6, thereby opening or closing the bypass channel, thereby adjusting the oil output of the oil outlet pipe 5 to balance the internal pressure. When the pressure returns to normal, the solenoid valve 7 is de-energized, the spring 8 inside the three-way 6 pushes the magnetic block 9 to reset, and the sealing block 13 re-seals the bypass channel to ensure stable operation of the equipment.

[0030] This invention, through the cooperation of the shell 3 and the vortex shell 1, enables the injected water to form a high-speed rotating flow, which can reduce the scouring and wear of the formation by the water flow, reduce the risk of formation blockage caused by impurity deposition, promote the uniform diffusion of injected water in the oil layer, improve the water drive sweep efficiency, and avoid local water channeling, thereby effectively ensuring the improvement of crude oil recovery. At the same time, the pressure sensor in the outlet 4 and the flow controller in the feed port 2 form a coordinated control, which can dynamically adjust the feed flow rate in real time according to the pressure at the outlet end, ensuring the stability of the oil-water separation and water injection process.

[0031] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A swirl injector with a bypass valve, characterized in that: The utility model relates to a kind of oil well water injection systems, including shell (3), shell (3) upper and lower ends are respectively provided with with its communication spiral flow shell (1) and water outlet (4), turbine fan (21) is rotatably connected in shell (3) close to water outlet (4), spiral flow shell (1) is equipped with mouth (2) and oil outlet pipe (5), oil outlet pipe (5) one end inside spiral flow shell (1) is provided with fairing (14), fairing (14) is fixedly connected with crosspiece (16) inside, crosspiece (16) is rotatably connected with flowmeter (15), oil outlet pipe (5) is equipped with bypass valve assembly; The bypass valve assembly includes a three-way (6) connected to the oil outlet pipe (5), a partition block (10) fixedly installed in the three-way (6), a pull rod (11) slidingly connected to the partition block (10) and penetrating the partition block (10), a magnetic block (9) fixedly connected to the top of the pull rod (11), an electromagnetic valve (7) provided on the three-way (6) and matched with the magnetic block (9), a spring (8) provided in the three-way (6) and matched with the electromagnetic valve (7) and the magnetic block (9), a sealing block (13) provided at the bottom of the pull rod (11) and matched with the three-way (6), and a sealing gasket (12) provided on the sealing block (13).

2. The spin streamer with bypass valve according to claim 1, characterized in that: The shell (3) is provided with a filter assembly matched with the turbine fan (21).

3. The spin streamer with bypass valve of claim 2, wherein: The filter assembly includes a partition cover (19) fixed in the shell (3), a filter plate (20) rotatably connected in the partition cover (19), the turbine fan (21) fixedly connected with the filter plate (20), a blow-off pipe (18) fixedly connected to the side of the partition cover (19) and penetrating the side of the shell (3), and an electromagnetic valve (17) provided at one end of the outside of the blow-off pipe (18).

4. The spin streamer with bypass valve of claim 3, wherein: The shell (3) is fixedly connected with an annular pipe (22) on the outside, a plurality of nozzles (23) provided on the annular pipe (22) and penetrating the shell (3), and the spray ends of the nozzles (23) correspond to the filter plate (20).

5. The spin streamer with bypass valve of claim 4, wherein: The nozzles (23) are all arranged at an angle of 15-30° downward, and the upper surface of the filter plate (20) is arranged as a curved surface.

6. The spin streamer with bypass valve of claim 5, wherein: The water outlet (4) is provided with a pressure sensor, the mouth (2) is provided with a flow controller, and the flow of water injection in the oil well is controlled by the cooperation of the pressure sensor and the flow controller.

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