Separated layer water injection device for oil field water injection well

Abstract

The utility model provides a separate layer water injection device of an oil field water injection well, which relates to the technical field of oil field development and comprises a fixed layering component, a water injection direction adjusting component and a connecting pipe component, the water injection direction adjusting component is arranged in the fixed layering component, and the connecting pipe component is arranged above the water injection direction adjusting component; the water injection direction adjusting assembly comprises a mounting frame, elastic steel is arranged on the outer side of the mounting frame, and through the arrangement of the water injection direction adjusting assembly, when water flow is sprayed out through the bottom of the mounting frame, a connecting device for limiting the mounting frame is not arranged in the annular mounting sleeve, and therefore in the water spraying process, the water injection direction is adjusted; the mounting frame can shake along with different water pressures, at the moment, elastic steel and springs are used in cooperation, the moving effect of the mounting frame is improved, the elastic steel and the springs have the deformation effect, and therefore water flow can be controlled to be sprayed out from different directions for water injection in the using process, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield development, in particular to a layered water injection device for oilfield injection wells. Background Technique

[0002] Oilfield development is a key link in ensuring energy supply. With the continuous increase in global demand for oil, the traditional oilfield exploitation methods are facing many challenges, including resource depletion, rising exploitation costs, and environmental impacts. Therefore, improving the oil recovery rate of oilfields and extending the economic life of oilfields has become an urgent problem in the industry.

[0003] Water injection technology is a commonly used production-increasing means in the process of oilfield development. By injecting water into the oil reservoir, maintaining the formation pressure, promoting the flow of oil, and thus improving the oil recovery rate of the oilfield, the effectiveness of the water injection method directly affects the production efficiency and economic benefits of the oilfield.

[0004] During the process of oilfield exploitation, water injection technology is widely used to improve the oil production rate and extend the economic life of oilfields. Traditional water injection methods often have problems such as poor water injection uniformity and low efficiency, resulting in insufficient or excessive water injection in some formations, which affects the overall oil recovery rate of the oilfield.

[0005] Therefore, the utility model proposes a layered water injection device for oilfield injection wells. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a layered water injection device for oilfield injection wells.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme: A layered water injection device for oilfield injection wells, including a fixed layered component, a water injection direction adjustment component, and a connecting pipe component. The water injection direction adjustment component is arranged inside the fixed layered component, and the connecting pipe component is arranged above the water injection direction adjustment component;

[0008] The water injection direction adjustment component includes a mounting frame. An elastic steel is arranged on the outer side of the mounting frame. An annular mounting sleeve is arranged on the mounting frame outside the elastic steel. A spring is arranged between the elastic steel and the annular mounting sleeve.

[0009] As a preferred implementation manner, the elastic steel and the spring are both annularly distributed, and the included angles between two adjacent elastic steels and springs are equal.

[0010] The beneficial effects of adopting the above further solution are as follows: By setting the water injection direction adjustment component, the water flow direction during water injection can be changed. Therefore, during practical use, the water injection direction adjustment component is in an active state for a long time. Therefore, only using elastic steel or a spring cannot ensure the stability of the device during use. Therefore, when the two cooperate with each other, the service life of the water injection direction adjustment component can be effectively increased.

[0011] As a preferred embodiment, the fixed stratification component includes a fixing plate. The fixing plate is provided with a hydraulic push rod on one side of the annular installation sleeve, and the other end of the hydraulic push rod is connected to the annular installation sleeve.

[0012] The beneficial effects of adopting the above further solution are as follows: Since oilfield injection wells need to inject water at different depths during actual use, a fixing device that is convenient for clamping and limiting injection wells with different diameters is required to limit it, preventing the connecting pipe component from swinging too much during use and resulting in unsatisfactory water injection effects.

[0013] As a preferred embodiment, a roller groove is opened on the other side of the fixing plate, and an auxiliary wheel is rotatably connected in the roller groove.

[0014] The beneficial effects of adopting the above further solution are as follows: The roller groove is provided for installing the auxiliary wheel. At this time, under the action of the auxiliary wheel, the friction between the fixing plate and the inner wall of the injection well is reduced, making the up and down displacement of the fixed stratification component in the injection well smoother, thereby improving the stability of the device during use.

[0015] As a preferred embodiment, four fixed stratification components are provided, and the four fixed stratification components are annularly distributed, and the included angle between two adjacent fixed stratification components is equal.

[0016] The beneficial effects of adopting the above further solution are as follows: Through the setting of the fixed stratification component, the device can adapt to injection wells with different diameters. Through the setting of the hydraulic push rod, the fixed stratification component is driven to move inwards or outwards, thereby changing the fixed diameter of the fixed stratification component.

[0017] As a preferred embodiment, the connecting pipe component includes a connecting straight pipe and a connecting hose. The connecting hose is arranged between the two connecting straight pipes, and the connecting straight pipe and the connecting hose are fixedly connected and communicated. The connecting straight pipe is connected to the top of the installation frame.

[0018] The beneficial effects of adopting the above further solution are as follows: During the process of delivering water to the water outlet through the connection pipe assembly, due to the arrangement of the connecting hose, the connecting hose swings irregularly. At this time, when the connecting hose swings irregularly, the water pressure inside the connection pipe assembly becomes unstable, thereby further enhancing the movement effect of the water injection direction adjustment assembly. As a result, the water flows out in different directions under different water pressures, making the water injection more uniform, and thus improving the stability of the device during use.

[0019] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0020] 1. In the present utility model, through the arrangement of the water injection direction adjustment assembly, when the water flows out from the bottom of the mounting frame, since there is no connecting device for limiting the mounting frame inside the annular mounting sleeve, during the process of water spraying, the mounting frame will shake with different water pressures. At this time, in cooperation with the use of the elastic steel and the spring, the movement effect of the mounting frame is increased, and the elastic steel and the spring have a deformation effect. Therefore, during use, the water flow can be controlled to spray out in different directions for water injection, thereby improving the practicability of the device.

[0021] 2. In the present utility model, through the arrangement of the connection pipe assembly, during the process of delivering water to the water outlet, due to the arrangement of the connecting hose, the connecting hose swings irregularly. At this time, when the connecting hose swings irregularly, the water pressure inside the connection pipe assembly becomes unstable, thereby further enhancing the movement effect of the water injection direction adjustment assembly. As a result, the water flows out in different directions under different water pressures, making the water injection more uniform, and thus improving the stability of the device during use. Description of the Drawings

[0022] Figure 1 It is the front view of a layered water injection device for oilfield injection wells of the present utility model;

[0023] Figure 2 It is the exploded view of a layered water injection device for oilfield injection wells of the present utility model;

[0024] Figure 3 It is the exploded view of the water injection direction adjustment assembly and the connection pipe assembly in a layered water injection device for oilfield injection wells of the present utility model;

[0025] Figure 4 It is the structural diagram of the fixed layered assembly in a layered water injection device for oilfield injection wells of the present utility model;

[0026] Figure 5 It is the exploded view of the water injection direction adjustment assembly in a layered water injection device for oilfield injection wells of the present utility model.

[0027] Reference Signs

[0028] 1. Fixed layering component; 11. Fixed plate; 12. Hydraulic push rod; 13. Annular mounting sleeve; 14. Auxiliary wheel; 15. Roller groove;

[0029] 2. Water injection direction adjustment component; 21. Mounting frame; 22. Elastic steel; 23. Spring;

[0030] 3. Connecting pipe component; 31. Connecting straight pipe; 32. Connecting hose. Specific implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] As Figures 1-5 shown, the present invention provides a technical solution: a layered water injection device for oilfield injection wells, including a fixed layering component 1, a water injection direction adjustment component 2, and a connecting pipe component 3. The water injection direction adjustment component 2 is arranged inside the fixed layering component 1, and the connecting pipe component 3 is arranged above the water injection direction adjustment component 2; the water injection direction adjustment component 2 includes a mounting frame 21, an elastic steel 22 is arranged on the outer side of the mounting frame 21, an annular mounting sleeve 13 is arranged on the mounting frame 21 outside the elastic steel 22, a spring 23 is arranged between the elastic steel 22 and the annular mounting sleeve 13. The elastic steel 22 and the spring 23 are both annularly distributed, and the included angle between two adjacent elastic steels 22 and springs 23 is equal. Through the setting of the water injection direction adjustment component 2, when water flows out from the bottom of the mounting frame 21, since there is no connecting device for limiting the mounting frame 21 inside the annular mounting sleeve 13, during the process of water spraying, the mounting frame 21 will shake with different water pressures. At this time, it is used in cooperation with the elastic steel 22 and the spring 23 to increase the moving effect of the mounting frame 21, and the elastic steel 22 and the spring 23 have a deformation effect. Therefore, during use, the water flow can be controlled to spray from different directions for water injection, thereby improving the practicability of the device and solving the technical problem of uniform water injection.

[0033] As Figure 1 - Figure 2As shown in the figure: The connecting pipe assembly 3 includes a connecting straight pipe 31 and a connecting hose 32. The connecting hose 32 is arranged between two connecting straight pipes 31. The connecting straight pipe 31 and the connecting hose 32 are fixedly connected and communicated. The connecting straight pipe 31 is connected to the top of the mounting frame 21. Through the setting of the connecting pipe assembly 3, during the process of delivering water to the water outlet, due to the setting of the connecting hose 32, the connecting hose 32 swings irregularly. At this time, when the connecting hose 32 swings irregularly, it will cause the water pressure in the connecting pipe assembly 3 to be unstable, thereby further improving the moving effect of the water injection direction adjusting assembly 2, enabling the water flow to spray in different directions under different water pressures, making the water injection more uniform, and thus improving the stability of the device during use, solving the technical problem of poor stability of the water injection direction adjusting assembly 2 during use.

[0034] In the above solution, there is also a problem that the swinging amplitude of the connecting pipe assembly 3 is too large, resulting in the mounting frame 21 bumping against the injection well, as Figure 3 - Figure 4 As shown in the figure: In this solution, the fixed layer separation assembly 1 includes a fixed plate 11. A hydraulic push rod 12 is arranged on one side of the fixed plate 11 where the annular mounting sleeve 13 is located. The other end of the hydraulic push rod 12 is connected to the annular mounting sleeve 13. A total of four fixed layer separation assemblies 1 are provided, and the four fixed layer separation assemblies 1 are annularly distributed, and the included angle between two adjacent fixed layer separation assemblies 1 is equal. During the actual use process of the oilfield injection well, through the setting of the fixed layer separation assembly 1, the device can adapt to injection wells with different diameters. Through the setting of the hydraulic push rod 12, it drives the fixed layer separation assembly 1 to move inward or outward, thereby changing the fixed diameter of the fixed layer separation assembly 1 to fix the injection well, preventing the connecting pipe assembly 3 from swinging too much during use, resulting in an unsatisfactory water injection effect.

[0035] In the above solution, there is also a problem that it is easy to rub against the injection well when the device is retracted and extended, as Figure 4 As shown in the figure: In this solution, a roller groove 15 is opened on the other side of the fixed plate 11. An auxiliary wheel 14 is rotatably connected in the roller groove 15. Through the setting of the roller groove 15, it is used to install the auxiliary wheel 14. At this time, under the action of the auxiliary wheel 14, the friction between the fixed plate 11 and the inner wall of the injection well is reduced, making the fixed layer separation assembly 1 move more smoothly up and down in the injection well, thereby improving the stability of the device during use.

[0036] Working principle:

[0037] As Figures 1-5As shown in the figure, first, connect and fix the top of the connecting pipe assembly 3 to the water pump output end. Secondly, place the fixed stratification assembly 1 above the injection well, and use the dropping mechanism to drop the fixed stratification assembly 1 to the specified depth. Secondly, start the hydraulic push rod 12 to expand outward, so that the fixed plate 11 is pressed and fixed against the inner wall of the injection well. After the fixation is completed, start the water pump to inject water into the connecting pipe assembly 3. When the water flow is at one section of the connecting hose 32, due to the structural setting of the connecting hose 32, the connecting hose 32 swings irregularly. At this time, the water pressure also changes accordingly, so that the pressure when the water flow sprays drives the displacement of the mounting bracket 21, and with the deformation recovery of the elastic steel 22 and the spring 23, the water flow sprays in different directions in an irregular state.

[0038] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A layered water injection device for oilfield injection wells, characterized in that, It includes a fixed layered component (1), a water injection direction adjustment component (2), and a connecting pipe component (3). The water injection direction adjustment component (2) is arranged inside the fixed layered component (1), and the connecting pipe component (3) is arranged above the water injection direction adjustment component (2). The water injection direction adjustment component (2) includes a mounting frame (21). A resilient steel (22) is arranged on the outer side of the mounting frame (21). An annular mounting sleeve (13) is arranged on the mounting frame (21) on the outer side of the resilient steel (22). A spring (23) is arranged between the resilient steel (22) and the annular mounting sleeve (13).

2. The layered water injection device for oilfield injection wells according to claim 1, characterized in that: Both the resilient steel (22) and the spring (23) are annularly distributed, and the included angles between two adjacent resilient steels (22) and springs (23) are equal.

3. The layered water injection device for oilfield injection wells according to claim 1, characterized in that: The fixed layered component (1) includes a fixing plate (11). A hydraulic push rod (12) is arranged on one side of the fixing plate (11) where the annular mounting sleeve (13) is located. The other end of the hydraulic push rod (12) is connected to the annular mounting sleeve (13).

4. The layered water injection device for oilfield injection wells according to claim 3, characterized in that: On the other side of the fixing plate (11), a roller groove (15) is opened. An auxiliary wheel (14) is rotatably connected in the roller groove (15).

5. The layered water injection device for oilfield injection wells according to claim 1, wherein: A total of four fixed layered components (1) are provided, and the four fixed layered components (1) are annularly distributed, and the included angles between two adjacent fixed layered components (1) are equal.

6. The layered water injection device for oilfield injection wells according to claim 1, wherein: The connecting pipe component (3) includes a connecting straight pipe (31) and a connecting hose (32). The connecting hose (32) is arranged between the two connecting straight pipes (31). The connecting straight pipe (31) and the connecting hose (32) are fixedly communicated. The connecting straight pipe (31) is connected to the top of the mounting frame (21).

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