Pressure-reducing and injection-increasing device for oil field

Abstract

The utility model discloses a depressurization and augmented injection device for an oil field, and relates to the technical field of depressurization and augmented injection, which is technically characterized by comprising a mixing tank, a water inlet pipe is fixedly connected onto the mixing tank, a water quality sensor is fixedly connected onto the inner side wall of the water inlet pipe, a spherical shell is fixedly connected onto the water inlet pipe, a cavity is arranged in the spherical shell, and the water quality sensor is fixedly connected onto the spherical shell. A spherical steering block is arranged in the spherical shell, a through hole penetrating through the spherical steering block is formed in the spherical steering block, and a steering motor is fixedly connected to the side wall of the spherical shell. The technical effects that the problems that affected water enters a bottom layer, so that the stratum is blocked, corrosion is caused and the like can be avoided, stirring work is completed through flowing of the water, and the stirring efficiency is improved; and the consumption of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reduction and injection increase, in particular to a pressure reduction and injection increase device for oil fields. Background Technique

[0002] During the oil field development process, water injection is one of the key means to maintain formation pressure and improve oil recovery rate. As the oil field exploitation progresses continuously, the formation pressure gradually decreases. In order to ensure the continuous output of crude oil, a large amount of water needs to be injected into the formation.

[0003] However, the water quality of the injected water is directly related to the formation permeability and the development effect of the oil reservoir. If the injected water contains too many impurities such as suspended solids, microorganisms, minerals, etc., it will block the formation pores during the injection process, reduce the formation permeability, and affect the production capacity of oil and water wells. For example, suspended solid particles may deposit in the pores to form blockages, hindering the flow of oil and water to the wellbore. The reproduction of microorganisms will produce biofilms and metabolites, further exacerbating the formation blockage. At the same time, it may also cause corrosion problems and damage downhole equipment. Inappropriate water quality may also chemically react with the rocks and fluids in the formation, resulting in the destruction of the formation structure and the reduction of permeability. Therefore, we propose a new type of pressure reduction and injection increase device for oil fields. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a pressure reduction and injection increase device for oil fields, which solves the problems of poor water quality of the injected water, blocking the formation pores during the injection process, reducing the formation permeability, affecting the production capacity of oil and water wells, the reproduction of microorganisms in it will produce biofilms and metabolites, further exacerbating the formation blockage, and at the same time, it may also cause corrosion problems.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions: A pressure reduction and injection increase device for oil fields includes a mixing tank, a water inlet pipe is fixedly connected to the mixing tank. A water quality sensor is fixedly connected to the inner side wall of the water inlet pipe. A spherical shell is fixedly connected to the water inlet pipe. There is a cavity inside the spherical shell. A spherical steering block is arranged inside the spherical shell. A through hole is formed through the spherical steering block. A steering motor is fixedly connected to the side wall of the spherical shell. The output end of the steering motor is fixedly connected to the side wall of the spherical steering block. A steering delivery pipe is fixedly connected to the side wall of the spherical steering block;

[0008] A connecting cylinder is fixedly connected to the bottom side wall of the mixing tank. A partition plate is fixedly connected to the inner side wall of the connecting cylinder. A water pump is fixedly connected to the upper side wall of the partition plate. Connecting pipes are fixedly connected to both the output end and the input end of the water pump. The two connecting pipes respectively penetrate the side walls of the mixing tank and the partition plate. A telescopic conveying pipe is fixedly connected to the bottom side wall of the connecting cylinder. A plurality of connecting plates are fixedly connected to the side wall of the telescopic conveying pipe. Hydraulic cylinders are fixedly connected to the side walls of the plurality of connecting plates. The hydraulic cylinders are fixedly connected to the bottom side wall of the mixing tank.

[0009] Preferably: A pipeline for chemical agent injection is fixedly connected to the side wall of the mixing tank.

[0010] Preferably: A worm and a stirring member are rotatably connected to the inner side wall of the mixing tank. The longitudinal section of the worm and the longitudinal section of the stirring member are arranged in a cross shape. The worm is meshed with a worm gear. The worm gear is fixedly connected to the stirring member. An installation column is fixedly connected to one end of the worm. A plurality of paddle blades are fixedly connected to the installation column. The plurality of paddle blades are located in the water inlet pipe.

[0011] Preferably: The plurality of paddle blades are all arranged in an axial flow type blade arrangement.

[0012] Preferably: A protection box is fixedly connected to the inner side wall of the mixing tank. The worm gear is located inside the protection box.

[0013] Preferably: A filter pipe is provided on the connecting cylinder. A filter screen is fixedly connected to the inner side wall of the filter pipe.

[0014] Preferably: The filter pipe and the connecting cylinder are connected by a flange.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present utility model provides one, having the following beneficial effects:

[0017] 1. By setting a water flow turning structure, the water quality sensor can monitor the water quality and transmit the monitoring result to the controller. The controller controls the steering motor to work, rotates the spherical steering block, and changes the direction of the flowing water to the input end of the steering conveying pipe, so as to avoid the entry of influent water into the bottom layer, causing problems such as bottom layer blockage and corrosion.

[0018] 2. The utility model is provided with a structure that utilizes the impact force of water flow to rotate the stirring member. When the water flow impacts on the paddle blades, it can push the paddle blades to rotate, thereby causing the worm to rotate. Then, under the action of the worm gear, the stirring member will rotate. In this way, the water and the reactant can be stirred to make them evenly mixed together, and the stirring work is completed by using the flow of water, reducing the consumption of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 is a front cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 is a top cross-sectional structural schematic diagram of the utility model.

[0022] In the figure:

[0023] 1. Mixing tank; 2. Water inlet pipe; 3. Water quality sensor; 4. Spherical shell; 5. Spherical steering block; 6. Steering motor; 7. Stirring member; 8. Worm gear; 9. Worm; 10. Mounting column; 11. Paddle blade; 12. Protection box; 13. Connecting cylinder; 14. Partition board; 15. Water pump; 16. Delivery pipe; 17. Connecting plate; 18. Hydraulic cylinder; 19. Filter pipe; 20. Filter screen; 21. Flange; 22. Steering delivery pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In the utility model, unless otherwise stated, the orientations such as "upper and lower" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left and right" are usually relative to the left and right shown in the drawings; "inside and outside" refer to the inside and outside relative to the contours of each component itself, but the above orientation terms are not used to limit the utility model.

[0025] The utility model provides a technical solution:

[0026] Please refer to Figures 1 to 3 , a pressure reduction and injection increase device for oil fields, including a mixing tank 1, a water inlet pipe 2 fixedly connected to the mixing tank 1. A water quality sensor 3 is fixedly connected to the inner side wall of the water inlet pipe 2. A spherical shell 4 is fixedly connected to the water inlet pipe 2. A cavity is provided inside the spherical shell 4. A spherical steering block 5 is provided inside the spherical shell 4. A through hole is provided through the spherical steering block 5. A steering motor 6 is fixedly connected to the side wall of the spherical shell 4. The output end of the steering motor 6 is fixedly connected to the side wall of the spherical steering block 5. A steering delivery pipe 22 is fixedly connected to the side wall of the spherical steering block 5;

[0027] A connecting cylinder 13 is fixedly connected to the bottom side wall of the mixing tank 1. A partition plate 14 is fixedly connected to the inner side wall of the connecting cylinder 13. A water pump 15 is fixedly connected to the upper side wall of the partition plate 14. Connecting pipes are fixedly connected to both the output end and the input end of the water pump 15. The two connecting pipes respectively penetrate through the side walls of the mixing tank 1 and the partition plate 14. A telescopic conveying pipe 16 is fixedly connected to the bottom side wall of the connecting cylinder 13. A plurality of connecting plates 17 are fixedly connected to the side wall of the telescopic conveying pipe 16. Hydraulic cylinders 18 are fixedly connected to the side walls of the plurality of connecting plates 17. The hydraulic cylinders 18 are fixedly connected to the bottom side wall of the mixing tank 1.

[0028] In an alternative embodiment: A pipe for chemical agent feeding is fixedly connected to the side wall of the mixing tank 1.

[0029] It should be noted that adding reactants into the mixing tank 1 further improves the quality of oil extraction.

[0030] In an alternative embodiment: A worm 9 and a stirring member 7 are rotatably connected to the inner side wall of the mixing tank 1. The longitudinal section of the worm 9 and the longitudinal section of the stirring member 7 are arranged in a cross shape. The worm 9 is meshed with a worm gear 8. The worm gear 8 is fixedly connected to the stirring member 7. One end of the worm 9 is fixedly connected to a mounting post 10. A plurality of paddle blades 11 are fixedly connected to the mounting post 10. The plurality of paddle blades 11 are located in the water inlet pipe 2.

[0031] It should be noted that by the impact of the water entering the water inlet pipe 2 on the paddle blades 11, the worm 9 is rotated, and the mixing of water and reactants is completed evenly.

[0032] In an alternative embodiment: The plurality of paddle blades 11 are all arranged in an axial flow blade arrangement.

[0033] It should be noted that when the water flows in the water inlet pipe 2, it impacts the paddle blades 11 on the mounting post 10, and can push the paddle blades 11 to rotate.

[0034] In an alternative embodiment: A protection box 12 is fixedly connected to the inner side wall of the mixing tank 1. The worm gear 8 is located in the protection box 12.

[0035] It should be noted that it plays a sealing and protecting effect on the connection between the worm gear 8 and the worm 9, reduces the corrosion of the connection between the worm gear 8 and the worm 9, and further affects the stirring effect.

[0036] In an alternative embodiment: A filter pipe 19 is provided on the connecting cylinder 13. A filter screen 20 is fixedly connected to the inner side wall of the filter pipe 19.

[0037] It should be noted that the filtering function of the filter screen 20 can remove most of the impurities in the water and improve the quality of the injected water.

[0038] In an alternative embodiment: the filter tube 19 and the connecting cylinder 13 are connected by a flange 21.

[0039] It should be noted that the filter tube 19 is connected to the connecting cylinder 13 through the filter screen 20, so that the filter tube 19 can be disassembled in the later stage to replace or clean the filter screen 20 and maintain its filtering effect during operation.

[0040] During specific use, the working principle of the present invention is as follows:

[0041] Preventing the injection of problematic water quality:

[0042] When the external water source enters the water inlet pipe 2, the water quality sensor 3 (prior art, whose specific working principle and structure are not further elaborated) tests the incoming water source and transmits the test results to the controller (prior art, not shown in the figure) in real time. The controller analyzes the transmitted information. Once the data exceeds the set value, the controller controls the steering motor 6 to work. The output end of the steering motor 6 rotates, controlling the spherical steering block 5 to rotate. When the spherical steering block 5 rotates, the through holes communicating with both ends of the water inlet pipe 2 are rotated to one end of the steering delivery pipe 22, connecting the water inlet pipe 2 and the steering delivery pipe 22, and changing the direction of the water flow. In this way, the problematic water originally injected into the formation can be effectively diverted to other places for further treatment, avoiding the entry of water containing excessive suspended matter, microorganisms, minerals and other impurities into the formation, causing problems such as formation blockage and corrosion. The cavity sizes inside the spherical steering block 5 and the spherical housing 4 are adapted to each other.

[0043] Using the water flow to stir the water and the reactant:

[0044] Reactants are put into the mixing tank 1 through another pipe installed on the mixing tank 1 to further improve the quality of oil extraction. When these waters flow in the water inlet pipe 2, they impact the blades 11 on the mounting post 10, which can push the blades 11 to rotate, and then the worm 9 rotates. When the worm 9 rotates, the worm gear 8 meshing with it also rotates. The worm gear 8 is installed on the stirring member 7, so that the stirring member 7 also rotates. The rotation of the stirring member 7 fully stirs and mixes the incoming water and the reactant, and then pumps it into the telescopic delivery pipe 16 through the water pump 15.

[0045] Filtration of the water flow:

[0046] Through the filtering effect of the filter screen 20, most of the impurities in the water can be removed, improving the quality of the injected water, which is particularly important for low-permeability reservoirs. Because the formation physical properties of low-permeability reservoirs are poor and the permeability is low, the requirements for water quality are higher. Only high-quality water can effectively enter the formation and improve the water injection effect. If the impurities in the injected water enter the formation, they may form precipitates or scale in the formation pores, resulting in formation plugging. Installing a filter screen can reduce this risk of plugging, thereby improving the water absorption capacity and water injection efficiency of the injection well. The filter pipe 19 is connected to the connecting cylinder 13 through the filter screen 20, and the filter pipe 19 can be disassembled in the later stage to replace or clean the filter screen 20 to maintain its filtering effect during operation.

[0047] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A pressure reduction and injection increase device for oil fields, comprising a mixing tank (1), characterized in that: A water inlet pipe (2) is fixedly connected to the mixing tank (1). A water quality sensor (3) is fixedly connected to the inner side wall of the water inlet pipe (2). A spherical shell (4) is fixedly connected to the water inlet pipe (2). A cavity is provided inside the spherical shell (4). A spherical steering block (5) is provided inside the spherical shell (4). A through hole is provided through the spherical steering block (5). A steering motor (6) is fixedly connected to the side wall of the spherical shell (4). The output end of the steering motor (6) is fixedly connected to the side wall of the spherical steering block (5). A steering delivery pipe (22) is fixedly connected to the side wall of the spherical steering block (5). A connecting cylinder (13) is fixedly connected to the bottom side wall of the mixing tank (1). A partition plate (14) is fixedly connected to the inner side wall of the connecting cylinder (13). A water pump (15) is fixedly connected to the upper side wall of the partition plate (14). Connecting pipes are fixedly connected to both the output end and the input end of the water pump (15). The two connecting pipes respectively penetrate the side walls of the mixing tank (1) and the partition plate (14). A telescopic delivery pipe (16) is fixedly connected to the bottom side wall of the connecting cylinder (13). A plurality of connecting plates (17) are fixedly connected to the side wall of the telescopic delivery pipe (16). Hydraulic cylinders (18) are fixedly connected to the side walls of the plurality of connecting plates (17). The hydraulic cylinders (18) are fixedly connected to the bottom side wall of the mixing tank (1).

2. The pressure-reducing and injection-increasing device for oil fields according to claim 1, wherein: A pipe for chemical agent feeding is fixedly connected to the side wall of the mixing tank (1).

3. The pressure reduction and injection increase device for oil fields according to claim 2, wherein: A worm (9) and a stirring member (7) are rotatably connected to the inner side wall of the mixing tank (1). The longitudinal section of the worm (9) and the longitudinal section of the stirring member (7) are arranged in a cross shape. The worm (9) is meshed with a worm wheel (8). The worm wheel (8) is fixedly connected to the stirring member (7). One end of the worm (9) is fixedly connected to a mounting column (10). A plurality of blades (11) are fixedly connected to the mounting column (10). The plurality of blades (11) are located inside the water inlet pipe (2).

4. The pressure-reducing and injection-increasing device for oil fields according to claim 3, wherein: The plurality of blades (11) are arranged in an axial flow type blade arrangement.

5. The pressure-reducing and injection-increasing device for oil fields according to claim 4, characterized in that: A protection box (12) is fixedly connected to the inner side wall of the mixing tank (1). The worm wheel (8) is located inside the protection box (12).

6. The pressure-reducing and injection-increasing device for oil fields according to claim 5, wherein: A filter pipe (19) is provided on the connecting cylinder (13). A filter screen (20) is fixedly connected to the inner side wall of the filter pipe (19).

7. The pressure-reducing and injection-increasing device for oil fields according to claim 6, wherein: The filter pipe (19) is connected to the connecting cylinder (13) through a flange (21).

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