Novel anti-blocking oil nozzle

Abstract

The utility model discloses a novel anti-blocking oil nozzle, and belongs to the technical field of auxiliary oilfield exploitation. According to the technical scheme, the guide device guides oil flow, changes the direction of the oil flow, reduces direct impact of the oil flow on the inner wall of the oil nozzle and reduces the risk of oil nozzle blockage; and the filtering device is used for filtering the oil flow before entering the oil nozzle. The oil nozzle has the advantages that impurities and particles in an oil well are effectively intercepted and filtered, so that the occurrence rate of blockage of the oil nozzle is remarkably reduced, and continuous and stable production of the oil well is guaranteed.

Description

Technical Field

[0001] The utility model relates to a novel anti-blocking nozzle, belonging to the technical field of auxiliary oilfield exploitation. Background Art

[0002] The nozzle is one of the main accessories on the wellhead device of the production well. During the production process of the oil well, it plays the role of regulating the oil production pressure difference of the oil well, reducing the gas influence, and controlling the production of the oil well. It is an important throttling component. The aperture of the nozzle is usually between 2-10mm. During the production process, due to the impurities in the well fluid, the nozzle may be blocked, and it will also cause wax deposition and sand burial in the oil well borehole, resulting in frequent operation of pump inspection. The shutdown and maintenance time for pump inspection is long, reducing production efficiency. When performing pump inspection for operation, it is necessary to disassemble the nozzle to handle the blockage fault, and the whole nozzle needs to be disassembled and replaced, with high cost.

[0003] CN116066277A discloses an anti-blocking nozzle, which is provided with two chambers along the oil inlet direction. The first chamber is used for sedimentation and sewage discharge, the second chamber is further filtered through the internal filter screen, and a fan blade is arranged at the oil outlet end for atomization. The oil flow at the oil inlet end directly impacts the oil passage, and the oil passage is easily blocked by impurities and particles carried in the oil flow. The nozzle structure is complex and inconvenient to maintain after being blocked.

[0004] CN203463089U discloses an efficient anti-blocking nozzle. The technical solution includes sleeving a spiral dirt cleaner on the auxiliary nozzle body. Compared with the filter screen, the dirt cleaning effect of the spiral dirt cleaner is not ideal enough. Content of the Utility Model

[0005] To solve the defects existing in the prior art, the utility model provides a novel anti-blocking nozzle with a diversion structure, integrating functions of constant pressure, cut-off and one-way control, which can significantly simplify the design and installation process of the fluid control system, and reduce the complexity and maintenance cost of the system.

[0006] The technical solution of the utility model is: a novel anti-blocking nozzle, comprising:

[0007] A diversion device that diverts the oil flow, changes the direction of the oil flow, reduces the direct impact of the oil flow on the inner wall of the nozzle, and reduces the risk of nozzle blockage;

[0008] A filtering device that filters the oil flow before entering the nozzle.

[0009] The diversion device is a diversion cover, and the filtering device is a disc provided with filtering holes, and an oil guiding hole is opened in the middle of the disc.

[0010] The oil guiding hole communicates with the nozzle nipple, and the nozzle nipple communicates with the nozzle body.

[0011] The fairing includes a hollow cylinder structure with an open end, and a frustum-shaped flow guiding structure is sealed at the other end of the hollow cylinder structure.

[0012] The end of the nozzle nipple is threadedly connected to the nozzle body, and the nozzle body is hermetically threadedly connected to the nozzle heat-insulating sleeve through an external thread.

[0013] The open end of the hollow cylinder structure is provided with an internal thread, and the disc is connected to the internal thread through an external thread.

[0014] The disc is a wear-resistant and corrosion-resistant metal disc.

[0015] The metal disc is a stainless steel disc.

[0016] The filter holes are evenly distributed on the outer periphery of the disc surface.

[0017] The end of the nozzle nipple is hermetically connected to the nozzle body.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. Effectively intercept and filter impurities and particulate matters in the oil well, thereby significantly reducing the incidence of nozzle blockage and ensuring the continuous and stable production of the oil well.

[0020] 2. The design of the new anti-blocking nozzle will use wear-resistant and corrosion-resistant materials, extend the service life of the nozzle, reduce the frequency of maintenance and replacement, greatly reduce the maintenance cost of the oil field, and improve economic benefits.

[0021] 3. The fairing can prevent the fluid from directly impacting the nozzle, causing the impurities in the liquid to sink into the nozzle heat-insulating sleeve. After passing through the fairing, the fluid passes through the filter holes in the reverse direction and then enters the nozzle. Under the dual actions of filtering impurities and sedimenting impurities, the anti-blocking effect of the nozzle is significantly improved.

[0022] 4. When the filter holes of the disc are blocked, they can be disassembled and replaced separately without disassembling and replacing the entire nozzle, saving costs. Brief Description of the Drawings

[0023] Figure 1 is a structural diagram of the present utility model;

[0024] Figure 2 is a schematic diagram of the fluid flow direction;

[0025] Figure 3 is a position view of the filter holes and oil guiding holes on the disc.

[0026] The reference numerals in the drawings are as follows: 1, fairing; 2, filter hole; 3, nozzle nipple; 4, nozzle body; 5, disc; 6, oil guiding hole. Detailed Description of the Preferred Embodiments

[0027] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below in conjunction with the drawings and specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below in conjunction with the drawings.

[0029] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0030] Secondly, the present utility model is described in detail in conjunction with the schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0031] The following is a further detailed description of the present utility model in conjunction with the attached Figures 1-3 The present utility model is further described in detail as follows:

[0032] Embodiment 1

[0033] A new type of anti-blocking oil nozzle includes a flow guide cover and a filtering device located in the oil nozzle heat preservation sleeve. The fluid is guided through the flow guide cover in the oil nozzle heat preservation sleeve and filtered for impurities and particles through the filtering device.

[0034] The flow guide cover 1 includes a hollow cylinder structure with one end open, and the other end of the hollow cylinder structure is sealed with a frustum-shaped flow guide structure. After the fluid enters the oil nozzle heat preservation sleeve, it passes through the frustum-shaped flow guide structure to guide the oil flow, change the oil flow direction, reduce the direct impact of the oil flow on the inner wall of the oil nozzle, and reduce the risk of oil nozzle blockage. The fluid flow direction of the fluid entering the oil nozzle heat preservation sleeve is as Figure 2 shown. After being guided by the frustum-shaped flow guide structure, the fluid flows downward from top to bottom towards the inner walls of the heat preservation sleeve around. After the fluid flows to the bottom of the heat preservation sleeve, it flows slowly upward in a reverse flow and enters the filtering device. Part of the impurities and particles cannot flow upward with the liquid flow under the action of gravity, so they settle to the bottom of the heat preservation sleeve, reducing the impurities and particles flowing to the filtering device.

[0035] The filtering device is a disc 5 provided with filtering holes 2 for filtering the liquid flow. A oil guiding hole 6 is opened in the middle of the disc 5, and the oil guiding hole 6 communicates with the nozzle nipple 3. The nozzle nipple 3 communicates with the nozzle body 4. The filtered liquid flow enters the nozzle nipple 3 through the oil guiding hole 6.

[0036] The end of the nozzle nipple 3 is threadedly connected to the nozzle body 4 to fix the end of the nozzle nipple 3 to the nozzle body 4. The nozzle body 4 is hermetically threadedly connected to the nozzle heat-insulating sleeve through an external thread 5 to hermetically fix the nozzle body 4 to the nozzle heat-insulating sleeve.

[0037] The open end of the hollow cylinder structure is provided with an internal thread, and the disc 5 is hermetically threadedly connected to the internal thread through an external thread to ensure that the liquid flow can only enter the inner cavity formed by the disc 5 and the diversion cover 1 after being filtered through the filtering holes 2.

[0038] The disc 5 is a wear-resistant and corrosion-resistant stainless steel disc with a long service life.

[0039] The filtering holes 2 are evenly distributed on the outer periphery of the surface of the disc 5. The liquid flow is filtered through the filtering holes 2 and enters the outer periphery of the inner cavity of the diversion cover 1 from the outer periphery of the disc 5 upward, then flows downward from the middle of the inner cavity of the diversion cover 1 into the nozzle nipple 3, and finally enters the nozzle body 4. The fluid after the dual effects of sedimentation and filtration enters the nozzle body 4 again, and it is not easy to block the nozzle, and the anti-blocking effect is significantly improved.

[0040] The end of the nozzle nipple 3 is hermetically connected to the nozzle body 4 to ensure that there is no leakage between the end of the nozzle nipple 3 and the nozzle body 4.

[0041] Embodiment 2

[0042] The present utility model will be further described in detail in actual production applications:

[0043] Comparison table of nozzle blockage conditions between traditional nozzles and the nozzles of the present utility model

[0044]

[0045] A comparative experiment was carried out on 12 wells in a certain operation area, and the comparison records are shown in the above table. The well station employees observed the usage status of the liquid level gauge during production operation. Through the above 12 tests, the component composition structure of the nozzle body of the present invention was finally determined, and the optimal target effect can be achieved.

[0046] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A new type of anti-blocking oil nozzle, characterized in that: include: The guide device guides the oil flow, changes the direction of the oil flow, reduces the direct impact of the oil flow on the inner wall of the oil nozzle, and reduces the risk of oil nozzle blockage; A filter device is used to filter the oil flow before entering the oil nozzle; The flow guide device is a flow guide cover (1), the filtering device is a disc (5) provided with filtering holes (2), and an oil guide hole (6) is opened in the middle of the disc (5).

2. The novel anti-blocking oil nozzle according to claim 1 is characterized in that: The oil guide hole (6) is connected to the oil nozzle short section (3), and the oil nozzle short section (3) is connected to the oil nozzle body (4).

3. The novel anti-blocking oil nozzle according to claim 1 is characterized in that: The deflector cover (1) comprises a hollow cylindrical structure with an opening at one end, and a truncated cone-shaped deflector structure is sealed at the other end of the hollow cylindrical structure.

4. The novel anti-blocking oil nozzle according to claim 2 is characterized in that: The end of the oil nozzle short section (3) is threadedly connected to the oil nozzle body (4), and the oil nozzle body (4) is sealed and threadedly connected to the oil nozzle insulation sleeve via an external thread.

5. The novel anti-blocking oil nozzle according to claim 3 is characterized in that: The open end of the hollow cylindrical structure is provided with an internal thread, and the disc (5) is connected to the internal thread via an external thread.

6. The novel anti-blocking oil nozzle according to claim 1 is characterized in that: The disc (5) is a wear-resistant and corrosion-resistant metal disc.

7. The novel anti-blocking oil nozzle according to claim 6 is characterized in that: The metal disc is a stainless steel disc.

8. The novel anti-blocking oil nozzle according to claim 1 is characterized in that: The filtering holes (2) are evenly distributed on the outer circumference of the surface of the disc (5).

9. The novel anti-blocking oil nozzle according to claim 2 is characterized in that: The end of the oil nozzle short section (3) is sealedly connected to the oil nozzle body (4).

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