Downhole adjustable eccentric water distributor

Abstract

The application provides a downhole adjustable eccentric water distributor, which comprises a cylinder body, a concentrated flow channel and a main flow channel are through the cylinder body from top to bottom, square flow channels are arranged on the inner walls of the two sides of the main flow channel, water nozzles are fixedly connected to the ends of the two square flow channels, flow adjusting assemblies are installed on the inner walls of the two square flow channels, an installation cavity is arranged in the cylinder body, a driving assembly is installed between the installation cavity and the flow adjusting assemblies, a first heat dissipation assembly is installed in the installation cavity, a main cavity is arranged in the cylinder body, and a hydraulic power generation assembly is installed between the main cavity and the main flow channel. The hydraulic power generation assembly is arranged to provide electric energy by using the impact force of water injection, so that the electric power transmission facilities such as cables are not needed for power transmission, thereby avoiding the leakage phenomenon and ensuring the use of electric power of the motor and various electrical detection elements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water distributor, in particular to a downhole adjustable eccentric water distributor. BACKGROUND

[0002] The water distributor is a downhole special tool for quantitative water injection of each oil layer, which mainly comprises a water distribution main body, a water distribution nozzle, a water nozzle body, a pressure cover and a sealing ring.

[0003] At present, the adjustable water distributor controls the opening degree of the water nozzle through electrical equipment. Since detection sensors and other elements are also installed inside the adjustable water distributor, the power consumption is high. It is difficult to meet long-term use with lithium batteries, and power transmission facilities such as external cables are also prone to electric leakage. At the same time, the existing adjustable eccentric water distributor has large adjustment deviation and large flow control error. SUMMARY

[0004] In view of the defects of the prior art, the present application provides a downhole adjustable eccentric water distributor, which solves the problem that the existing high-low temperature rapid temperature change test is not convenient for placing and taking elements with large volume and heavy weight.

[0005] To achieve the above purpose, the following technical scheme is adopted: a downhole adjustable eccentric water distributor, comprising a cylinder, a concentrated flow channel and a main flow channel are through the cylinder, square flow channels are arranged on the inner walls of both sides of the main flow channel, water nozzles are fixedly connected to the ends of the two square flow channels, flow regulation assemblies are installed on the inner walls of one side of the two square flow channels, an installation cavity is arranged in the cylinder, a driving assembly is installed between the installation cavity and the flow regulation assembly, a first heat dissipation assembly is installed in the installation cavity, a main cavity is arranged in the cylinder, a hydroelectric power generation assembly is installed between the main cavity and the main flow channel, and a second heat dissipation assembly is installed in the main cavity.

[0006] Preferably, the two flow regulation assemblies each comprise an installation slot, which is arranged in the inner wall of the square flow channel, an arc-shaped regulation plate is slidably connected to the inside of the installation slot and the square flow channel, both ends of the arc-shaped regulation plate are fixedly connected to side plates, the side plates are slidably connected between the square flow channel and the installation slot, two sealing pads are fixedly connected between the arc-shaped regulation plate and the side plates, an adjustment rod is fixedly connected to the inner end surface of the arc-shaped regulation plate, the adjustment rod extends to the inside of the installation cavity through the inside of the installation slot, and the adjustment rod is slidably connected to the cylinder, and a threaded hole is arranged at one end of the adjustment rod.

[0007] Preferably, the inner walls of the two square flow channels are provided with embedding grooves, sealing strips are embedded in the inside of the embedding grooves, and the sealing strips are matched with the arc-shaped regulation plate.

[0008] Preferably, both drive components include a motor, and the motor is fixedly installed inside the mounting cavity. The drive shaft of the motor is fixedly connected to a lead screw, and the lead screw is threadedly connected to an adjacent threaded hole.

[0009] Preferably, the first heat dissipation component includes two S-shaped copper tubes, which are fixedly installed inside the mounting cavity. A long pipe is fixedly connected between the outlet of one S-shaped copper tube and the inlet of the other S-shaped copper tube. A fixed pipe is fixedly connected between the outlet of one S-shaped copper tube and the inlet of the other S-shaped copper tube, and the fixed pipe is connected to the main channel. The fixed pipe connected to the inlet of the S-shaped copper tube is located above the other fixed pipe. Multiple first heat exchange fins are fixedly connected to the outer surfaces of the two S-shaped copper tubes.

[0010] Preferably, each of the hydroelectric power generation components includes an impeller, with a rotating shaft fixedly connected to the center of the impeller. The rotating shaft extends vertically through the main channel to the interior of the main chamber and is rotatably connected to the cylinder. A first bevel gear is fixedly connected to one end of the rotating shaft, and a second bevel gear is meshed with the bottom of the first bevel gear. A connecting shaft is fixedly connected to the bottom of the second bevel gear, and a support block is rotatably connected to the outer surface of the connecting shaft. The support block is fixedly connected to the main chamber.

[0011] Preferably, a small generator is fixedly installed inside the main chamber, and the shaft of the small generator is fixedly connected to the connecting shaft. An inverter and a battery are installed inside the main chamber.

[0012] Preferably, the second heat dissipation component includes a circulation pipe, the inlet and outlet of which are both fixedly connected to a straight pipe, and the straight pipe is connected to the main flow channel. A plurality of second heat exchange fins are fixedly connected to the outer surface of the circulation pipe.

[0013] Preferably, the top and bottom of the cylinder are both fixedly connected with connectors.

[0014] Working Principle: When water is injected into the centralized flow channel, it flows into the main flow channel through the centralized inlet, impacting the impeller and causing it to rotate. The impeller's rotation drives the first bevel gear via the shaft, which in turn drives the connecting shaft via the second bevel gear, providing kinetic energy to the generator. The electricity generated by the generator is converted by the inverter and stored in the battery to power the motor and other electrical components. Water in the main flow channel enters the water nozzle through the square flow channel and then flows into the external oil layer. When the water nozzle flow rate needs to be adjusted, the motor starts, driving the lead screw to rotate. This drives the adjusting rod through the threaded hole, which in turn moves the arc-shaped adjusting plate and the side plate (the shortest distance between the arc-shaped adjusting plate and the sealing strip is the adjusting distance) until the desired value is reached, thus achieving flow rate regulation of the water nozzle. Meanwhile, the water in the main channel flows into the adjacent S-shaped copper pipe and the circulation pipe through the fixed pipe and the straight pipe, respectively. The water entering the adjacent S-shaped copper pipe flows into another S-shaped copper pipe through the long pipe, and then flows back to the main channel through the fixed pipe. During this period, the water flowing through the S-shaped copper pipe dissipates heat from the two motors through the first heat exchange fins. The water entering the circulation pipe dissipates heat from the main chamber through the second heat exchange fins, and then flows back to the main channel through the straight pipe.

[0015] This invention provides an adjustable eccentric water distributor for wells.

[0016] It has the following beneficial effects:

[0017] 1. This invention provides electrical energy by using the impact force of water injection through a hydroelectric power generation component, eliminating the need for power transmission facilities such as cables, thus avoiding leakage and ensuring the power supply for the motor and various electrical detection components.

[0018] 2. The present invention can regulate the flow rate of the water nozzle by setting the drive component, square flow channel and flow regulation component. The adjustment is made by using a lead screw, which has a low adjustment deviation. At the same time, the arc transition is used to provide stability of flow control, thereby reducing flow control error.

[0019] 3. The present invention, through the provision of a first heat dissipation component and a second heat dissipation component, can dissipate heat from electrical components such as motors, generators, inverters, and batteries, which is beneficial to the stable operation of each electrical component. Attached Figure Description

[0020] Figure 1 A three-dimensional diagram of an adjustable eccentric water distributor in a well.

[0021] Figure 2 A side sectional view of an adjustable eccentric water distributor in a well.

[0022] Figure 3 A top sectional view of an adjustable eccentric water distributor in a well.

[0023] Figure 4 This is a schematic diagram of the flow regulation component in an adjustable eccentric water distributor for wells.

[0024] Figure 5 An adjustable eccentric water distributor for wells Figure 3 Enlarged view of point A in the middle.

[0025] The components are as follows: 1. Cylinder; 2. Water nozzle; 3. Connector; 4. Centralized flow channel; 5. Impeller; 6. Shaft; 7. Main flow channel; 8. Mounting cavity; 9. Square flow channel; 10. First bevel gear; 11. Second bevel gear; 12. Connecting shaft; 13. Support block; 14. Straight pipe; 15. Generator; 16. Inverter; 17. Circulation pipe; 18. Battery; 19. Second heat exchange fin; 20. Main chamber; 21. Motor; 22. First heat exchange fin; 23. Long pipe; 24. Fixed pipe; 25. S-shaped copper pipe; 26. Lead screw; 27. Arc-shaped adjusting plate; 28. Side plate; 29. ​​Threaded hole; 30. Adjusting rod; 31. Sealing gasket; 32. Groove; 33. Sealing strip. Detailed Implementation

[0026] 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.

[0027] Example 1:

[0028] like Figures 1-5 As shown, this embodiment of the invention provides an adjustable eccentric water distributor for wells, including a cylindrical body 1. The cylindrical body 1 has a central flow channel 4 and a main flow channel 7 running vertically through it. Square flow channels 9 are opened on both sides of the inner wall of the main flow channel 7. Water nozzles 2 are fixedly connected to the ends of the two square flow channels 9. Flow regulating components are installed on one side of the inner wall of the two square flow channels 9. An installation cavity 8 is opened inside the cylindrical body 1. A drive component is installed through the installation cavity 8 and the flow regulating component. A first heat dissipation component is installed inside the installation cavity 8. A main chamber 20 is opened inside the cylindrical body 1. A hydroelectric power generation component is installed between the main chamber 20 and the main flow channel 7. A second heat dissipation component is installed inside the main chamber 20.

[0029] Figure 1 and Figure 2 As shown, connectors 3 are fixedly connected to the top and bottom of the cylinder 1. The connectors 3 facilitate the connection of the whole to other external components.

[0030] Figure 2As shown, each hydroelectric power generation component includes an impeller 5. A rotating shaft 6 is fixedly connected to the center of the impeller 5, and the rotating shaft 6 extends vertically through the main channel 7 into the interior of the main chamber 20 and is rotatably connected to the cylinder 1. A first bevel gear 10 is fixedly connected to one end of the rotating shaft 6, and a second bevel gear 11 is meshed with the bottom of the first bevel gear 10. A connecting shaft 12 is fixedly connected to the bottom of the second bevel gear 11, and a support block 13 is rotatably connected to the outer surface of the connecting shaft 12. The support block 13 is fixedly connected to the main chamber 20. A small generator 15 is fixedly installed inside the main chamber 20, and the shaft of the small generator 15 is fixedly connected to the connecting shaft 12. An inverter 16 and a storage battery 18 are installed inside the main chamber 20. The impeller 5 rotates under the impact of injected water, thereby driving the first bevel gear 10 to rotate through the rotating shaft 6. The first bevel gear 10 is meshed with the second bevel gear 11, so it can drive the second bevel gear 11 to rotate, thereby driving the shaft of the generator 15 to rotate through the connecting shaft 12, providing kinetic energy to the generator 15. After the generator 15 generates electricity, it is converted by the inverter 16 and then stored in the storage battery 18. The support block 13 has the function of supporting and limiting the connecting shaft 12, which is beneficial to the installation of the connecting shaft 12 and at the same time prevents the connecting shaft 12 from deforming.

[0031] The second heat dissipation component includes a circulation pipe 17. The inlet and outlet of the circulation pipe 17 are both fixedly connected to straight pipes 14, and the straight pipes 14 are connected to the main flow channel 7. Multiple second heat exchange fins 19 are fixedly connected to the outer surface of the circulation pipe 17. Water in the main flow channel 7 enters the circulation pipe 17 through the straight pipes 14, and then exchanges heat with the inside of the main chamber 20 through the second heat exchange fins 19, thereby completing the heat dissipation of the internal components of the main chamber 20, which is beneficial to the stable operation of the components. The water after heat exchange is discharged through the bottom straight pipe 14.

[0032] Figure 3 As shown, the first heat dissipation assembly includes two S-shaped copper pipes 25, which are fixedly installed inside the mounting cavity 8. A long pipe 23 is fixedly connected between the outlet of one S-shaped copper pipe 25 and the inlet of the other S-shaped copper pipe 25. A fixed pipe 24 is fixedly connected between the outlet of one S-shaped copper pipe 25 and the inlet of the other S-shaped copper pipe 25. The fixed pipe 24 is connected to the main channel 7 and is located above the other fixed pipe 24. Multiple first heat exchange fins 22 are fixedly connected to the outer surface of both S-shaped copper pipes 25. Water inside the main channel 7 flows into the adjacent S-shaped copper pipe 25 through the top fixed pipe 24 and is then transported to the other S-shaped copper pipe 25 through the long pipe 23. The water flowing through the two S-shaped copper pipes 25 exchanges heat with the inside of the mounting cavity 8 through the first heat exchange fins 22, thereby completing the heat dissipation of the two motors 21. The water after heat exchange is discharged through the bottom fixed pipe 24.

[0033] Figure 3 , Figure 4 and Figure 5 As shown, both flow regulating components include mounting slots, which are formed on the inner wall of the square flow channel 9. An arc-shaped regulating plate 27 is slidably connected to both the mounting slot and the interior of the square flow channel 9. Side plates 28 are fixedly connected to both ends of the arc-shaped regulating plate 27, and the side plates 28 are slidably connected to the square flow channel 9 and the mounting slot. Two sealing gaskets 31 are fixedly connected between the arc-shaped regulating plate 27 and the side plates 28. An adjusting rod 30 is fixedly connected to the inner end face of the arc-shaped regulating plate 27, and the adjusting rod 30 extends vertically through the interior of the mounting slot to the interior of the mounting cavity 8. The adjusting rod 30 is slidably connected to the cylinder 1, and a threaded hole 29 is formed at one end of the adjusting rod 30. A groove 32 is formed on the inner wall of both square flow channels 9, and a sealing strip 33 is fixedly embedded inside the groove 32, matching the arc-shaped regulating plate 27. Both drive components include a motor 21, which is fixedly installed inside the mounting cavity 8. The drive shaft of the motor 21 is fixedly connected to a lead screw 26, and the lead screw 26 is threadedly connected to an adjacent threaded hole 29. The motor 21 drives the lead screw 26 to rotate, thereby driving the adjusting rod 30 to move through the threaded hole 29, thereby adjusting the flow rate through the arc-shaped adjusting plate 27. The adjustment deviation is less than 5%, and the arc transition provides stability for flow control, thereby reducing flow control error.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable eccentric water distributor for downhole wells, comprising a cylindrical body (1), characterized in that: The cylindrical body (1) has a central flow channel (4) and a main flow channel (7) running vertically. Square flow channels (9) are provided on both sides of the inner wall of the main flow channel (7). Water nozzles (2) are fixedly connected to the ends of the two square flow channels (9). Flow regulating components are installed on one side of the inner wall of the two square flow channels (9). An installation cavity (8) is provided inside the cylindrical body (1). A drive component is installed between the installation cavity (8) and the flow regulating component. A first heat dissipation component is installed inside the installation cavity (8). A main chamber (20) is provided inside the cylindrical body (1). A hydroelectric power generation component is installed between the main chamber (20) and the main flow channel (7). A second heat dissipation component is installed inside the main chamber (20). Both of the flow regulating components include a mounting groove, which is opened on the inner wall of the square flow channel (9). The mounting groove and the interior of the square flow channel (9) are slidably connected to an arc-shaped regulating plate (27). Both ends of the arc-shaped regulating plate (27) are fixedly connected to side plates (28), and the side plates (28) are slidably connected to the square flow channel (9) and the mounting groove. The arc-shaped regulating plate (27) and the side plates (28) are fixedly connected to two sealing gaskets (31). The inner end face of the arc-shaped regulating plate (27) is fixedly connected to an regulating rod (30), and the regulating rod (30) extends vertically through the interior of the mounting groove to the interior of the mounting cavity (8). The regulating rod (30) is slidably connected to the cylinder (1). One end of the regulating rod (30) is provided with a threaded hole (29). The inner walls of the two square flow channels (9) are provided with grooves (32), and a sealing strip (33) is fixedly embedded inside the grooves (32), and the sealing strip (33) matches the arc-shaped adjustment plate (27); Both drive components include a motor (21), and the motor (21) is fixedly installed inside the mounting cavity (8). The drive shaft of the motor (21) is fixedly connected to a lead screw (26), and the lead screw (26) is threadedly connected to an adjacent threaded hole (29).

2. The adjustable eccentric water distributor in a well according to claim 1, characterized in that: The first heat dissipation component includes two S-shaped copper tubes (25), and the S-shaped copper tubes (25) are fixedly installed inside the mounting cavity (8). A long pipe (23) is fixedly connected between the outlet of one S-shaped copper tube (25) and the inlet of the other S-shaped copper tube (25). A fixed pipe (24) is fixedly connected between the outlet of one S-shaped copper tube (25) and the inlet of the other S-shaped copper tube (25). The fixed pipe (24) is connected to the main channel (7), and the fixed pipe (24) connected to the inlet of the S-shaped copper tube (25) is located above the other fixed pipe (24). Multiple first heat exchange fins (22) are fixedly connected to the outer surfaces of the two S-shaped copper tubes (25).

3. The adjustable eccentric water distributor in a well according to claim 2, characterized in that: The hydroelectric power generation components all include an impeller (5), and a rotating shaft (6) is fixedly connected to the center of the impeller (5). The rotating shaft (6) extends vertically through the main channel (7) to the interior of the main chamber (20) and is rotatably connected to the cylinder (1). A first bevel gear (10) is fixedly connected to one end of the rotating shaft (6). A second bevel gear (11) is meshed with the bottom of the first bevel gear (10). A connecting shaft (12) is fixedly connected to the bottom of the second bevel gear (11). A support block (13) is rotatably connected to the outer surface of the connecting shaft (12), and the support block (13) is fixedly connected to the main chamber (20).

4. The adjustable eccentric water distributor in a well according to claim 3, characterized in that: A small generator (15) is fixedly installed inside the main chamber (20), and the shaft of the small generator (15) is fixedly connected to the connecting shaft (12). An inverter (16) and a battery (18) are installed inside the main chamber (20).

5. The adjustable eccentric water distributor in a well according to claim 1, characterized in that: The second heat dissipation component includes a circulation pipe (17), and the inlet and outlet of the circulation pipe (17) are both fixedly connected to a straight pipe (14), and the straight pipe (14) is connected to the main channel (7). Multiple second heat exchange fins (19) are fixedly connected to the outer surface of the circulation pipe (17).

6. The adjustable eccentric water distributor in a well according to claim 1, characterized in that: The top and bottom of the cylinder (1) are both fixedly connected with connectors (3).

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