Plug for oil nozzle, oil nozzle and Christmas tree

Abstract

The utility model relates to a screwed plug for an oil nozzle, the oil nozzle and a Christmas tree, and belongs to the technical field of oil field oil extraction. Comprising a main body and a connecting end arranged on the main body, the main body and the connecting end are respectively provided with a passage, the passage on the main body is communicated with the passage on the connecting end to form a main channel, the outer side face of the main body is provided with a plurality of holes, and the holes are distributed in the radial direction of the main channel and communicated with the main channel to form a plurality of branch channels. The connecting end is used for being connected with the oil nozzle so that oil layer mixed liquid in the aperture of the oil nozzle can be sprayed out through the main channel and the branch channels. According to the screwed plug, the main channel is used for being communicated with the hole diameter of the oil nozzle, the branch channels communicated with the main channel are arranged, and the screwed plug is connected with the oil nozzle through the connecting end, so that oil layer mixed liquid in the hole diameter of the oil nozzle is sprayed out through the main channel and the branch channels; and when one to two channels are blocked by impurities and thickened oil, the blowout is still not influenced, and the production time rate is prolonged.

Description

Technical Field

[0001] The utility model relates to a thread plug for an oil nozzle, an oil nozzle and an oil production tree, belonging to the technical field of oil field production. Background Art

[0002] At present, after the steam stimulation and well shut-in of heavy oil fields is completed, small-aperture nozzles such as 1mm and 2mm are used to control the production pressure difference for blowout. Due to the small aperture of the nozzle, impurities and heavy oil in the wellbore and formation can easily block the nozzle channel, resulting in discontinuous blowout production of the oil well, increasing the workload of the duty station staff, and in serious cases, missing the best production period of the oil well, increasing downhole failures and causing the well to lie dormant. Utility Model Content

[0003] The utility model aims to provide a plug for an oil nozzle, an oil nozzle and an oil tree, which are used to solve the problem that the existing oil nozzle channel is very easy to be blocked, resulting in discontinuous production of oil well blowout.

[0004] To achieve the above purpose, the solution of the utility model includes:

[0005] The utility model discloses a thread plug for an oil nozzle, comprising a main body and a connecting end arranged on the main body, wherein passages are respectively provided on the main body and the connecting end, and the passage on the main body is connected with the passage on the connecting end to form a main passage, and a plurality of holes are provided on the outer surface of the main body, and the plurality of holes are distributed along the radial direction of the main passage and are connected with the main passage to form a plurality of branch passages, and the connecting end is used for connecting the oil nozzle so that the oil layer mixture in the oil nozzle aperture can be sprayed out through the main passage and each branch passage.

[0006] The wire plug of the utility model is provided with a main channel for communicating with the nozzle aperture, and a plurality of branch channels communicated with the main channel are provided. The wire plug of the utility model is connected to the nozzle through the connecting end, so that the oil layer mixed liquid (impurities and / or thick oil) in the nozzle aperture is sprayed out through the main channel and each branch channel. When impurities and thick oil block 1-2 channels, the spraying is still not affected, thereby extending the production time rate.

[0007] Further, the distribution of the plurality of holes on the outer side surface of the main body is uneven, and / or the plurality of branch channels are evenly distributed along the radial direction of the main channel.

[0008] The utility model has several holes unevenly distributed on the outer side of the main body, and / or several branch channels evenly distributed along the radial direction of the main channel, which ensures the strength of the plug under the pressure difference during the blowdown production and effectively improves the service life of the plug.

[0009] Furthermore, the aperture of the passage on the main body is the same as the aperture of the passage on the connecting end, or the aperture of the passage on the main body is the same as the aperture of the passage on the connecting end and the apertures of several branch channels.

[0010] The aperture of the passage on the main body of the wire plug of the utility model is the same as the aperture of the passage on the connecting end, or the aperture of the passage on the main body is the same as the aperture of the passage on the connecting end and the aperture of several branch passages, which facilitates the smooth discharge of impurities and heavy oil from the passage during blowout production, reduces the possibility of blockage, and can also ensure the strength of the wire plug under the pressure difference during blowout production, effectively increasing the service life of the wire plug.

[0011] Further, the passage on the main body is arranged at the central axis position of the main body, and the passage on the connecting end is arranged at the central axis position of the connecting end.

[0012] The passage on the main body of the utility model is arranged at the central axis position of the main body, and the passage on the connecting end is arranged at the central axis position of the connecting end, which ensures the strength of the wire plug under the pressure difference during the blowout production and effectively improves the service life of the wire plug.

[0013] Furthermore, the main channel is a straight channel.

[0014] The main channel of the utility model is a straight channel, which is convenient for impurities and thick oil to be smoothly sprayed out from the channel during spraying production, thereby reducing the possibility of blockage.

[0015] Furthermore, several branch channels are straight channels.

[0016] The branch channel of the utility model is a straight channel, which is convenient for impurities and thick oil to be smoothly sprayed out from the channel during spraying production, thereby reducing the possibility of blockage.

[0017] Furthermore, an outer wall of the connecting end is provided with an external thread for threaded connection with the oil nozzle.

[0018] The thread plug of the utility model is screwed to the oil nozzle through the external thread on the outer side wall of the connection end, so it is convenient to disassemble and replace.

[0019] Furthermore, the main body is in the shape of a regular tetrahedron, and branch channels are provided on four sides of the regular tetrahedron.

[0020] The plug of the utility model is in the shape of a regular square, which is convenient for installing the plug on the oil nozzle, so that the oil layer mixed liquid in the oil nozzle aperture is sprayed out through the main channel and four branch channels. Even if impurities and thick oil block 1-2 channels, the spraying is still not affected, and the production time is extended. There are 5 channels in common on the regular square body, specifically the branch channels on the four sides and the main channel on the body.

[0021] The utility model discloses an oil nozzle, comprising an oil nozzle body, a central axis of which is provided with an aperture, and a rear end of the oil nozzle body is connected to the above-mentioned oil nozzle plug so that the oil layer mixed liquid in the oil nozzle aperture can be sprayed out through a main channel and various branch channels.

[0022] The oil nozzle of the utility model is connected with a thread plug so that the oil layer mixed liquid (impurities and / or thick oil) in the oil nozzle aperture is sprayed out through the main channel and each branch channel. When the impurities and thick oil block 1-2 channels, the spraying is still not affected, thereby extending the production time.

[0023] The utility model discloses an oil tree, wherein the oil nozzle sleeve of the oil tree is provided with the oil nozzle as mentioned above.

[0024] The utility model provides an oil nozzle in the oil nozzle sleeve of the oil tree, and is suitable for heavy oil blowout wells with oil nozzle sleeves. It utilizes the principle of increasing the oil flow channel by processing the crude oil nozzle, is easy and reliable to operate, and can effectively prevent impurities and heavy oil from blocking the oil nozzle channel during blowout production, thereby extending the production time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the oil nozzle of the utility model;

[0026] Figure 2 It is a cross-sectional view of the oil nozzle of the utility model;

[0027] Figure 3 It is a schematic diagram of the dimensions of the oil nozzle of the utility model;

[0028] Figure 4 It is a cross-sectional view of the screw plug for the oil nozzle of the utility model;

[0029] Figure 5 It is a schematic diagram of the cross-sectional dimensions of the screw plug for the oil nozzle of the utility model;

[0030] Figure 6 It is a longitudinal cross-sectional view of the screw plug for the oil nozzle of the utility model;

[0031] Figure 7 It is a schematic diagram of the longitudinal dimensions of a screw plug for an oil nozzle of the utility model.

[0032] Description of reference numerals:

[0033] 1. Nozzle body; 10. Aperture of the nozzle body; 11. Internal thread at the rear end of the nozzle body; 2. Main body; 3. Connecting end; 4. Passage at the connecting end; 5. Branch channel; 6. Passage of the main body. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] An embodiment of a grease nozzle:

[0036] The existing oil nozzle is a center hole drilled on the oil nozzle body, which is connected to the oil outlet hole at the rear end of the oil nozzle. The front end of the oil nozzle is processed with an external thread, which is connected and sealed with the internal thread of the oil nozzle sleeve on the oil tree body. The design is relatively simple. Due to the small diameter of the oil nozzle, impurities and heavy oil in the wellbore and formation can easily block the oil nozzle channel, causing discontinuous oil well release and production, increasing the workload of employees, and in serious cases missing the best production period of the oil well, increasing downhole failures and causing the well to lie.

[0037] In order to solve the above problems, an oil nozzle which can prevent excessive production pressure difference and control oil layer pressure, temperature and liquid volume during early blowout production and is easy to install and use is provided to ensure continuous production of oil wells to the maximum extent.

[0038] The utility model is a kind of oil nozzle, such as Figures 1 to 7 As shown, it includes a nozzle body 1, and an aperture (aperture 10 of the nozzle body) is opened on the central axis of the nozzle body 1. The rear end of the nozzle body is connected to a nozzle plug so that the oil layer mixture in the nozzle aperture can be sprayed out through the main channel and each branch channel. The nozzle of the utility model is connected to a plug so that the oil layer mixture (impurities and / or thick oil) in the nozzle aperture can be sprayed out through the main channel and each branch channel. When impurities and thick oil block 1-2 channels, the spraying is still not affected, thereby extending the production time. Among them, the rear end of the nozzle body is provided with an internal thread, that is, the internal thread 11 at the rear end of the nozzle body is screwed with the nozzle plug to realize the connection between the nozzle body and the nozzle plug.

[0039] The plug for the oil nozzle comprises a main body 2 and a connecting end 3 arranged on the main body 2. The main body 2 and the connecting end 3 are respectively provided with passages. The passage on the main body (i.e., the passage 6 of the main body) is connected with the passage on the connecting end (i.e., the passage 4 of the connecting end) to form a main passage. The outer surface of the main body is provided with a plurality of holes. The plurality of holes are distributed along the radial direction of the main passage and connected with the main passage to form a plurality of branch passages 5. The connecting end is used to connect the oil nozzle so that the oil layer mixed liquid in the oil nozzle aperture (i.e., the aperture 10 of the oil nozzle body) is discharged through the main passage and each branch passage. The plurality of holes are distributed unevenly on the outer surface of the main body, and / or the plurality of branch passages are evenly distributed along the radial direction of the main passage. The aperture of the passage on the main body is the same as the aperture of the passage on the connecting end, or the aperture of the passage on the main body is the same as the aperture of the passage on the connecting end and the aperture of the plurality of branch passages. The passage on the main body is arranged at the central axis position of the main body, and the passage on the connecting end is arranged at the central axis position of the connecting end. The main passage is a straight passage, and the plurality of branch passages are straight passages. The outer wall of the connecting end is provided with an external thread for screwing with the oil nozzle. The main body is in the shape of a regular square, and branch passages are arranged on the four sides of the main body in the shape of a regular square.

[0040] Specifically, the utility model is composed of a nozzle body and a multi-channel plug (the multi-channel plug is a plug for a nozzle of the utility model). The main parts of the utility model are the nozzle body, the rear end of the nozzle body is processed with an internal thread, the front end (connecting end) of the multi-channel plug structure is cylindrical, and the outer wall of the cylinder is provided with an external thread, the rear end (main body) of the multi-channel plug structure is a square, the middle hole is a through hole (main channel), the aperture is the same as the aperture of the original nozzle, that is, the aperture of the main channel is the same as the aperture opened on the nozzle body, a hole is drilled on each of the four surfaces of the square (the aperture is the same as the aperture of the original nozzle) and communicated with the center hole to form a branch channel communicated with the main channel, that is, the aperture of the main channel and the aperture of the branch channel are the same as the aperture opened on the nozzle body; when installing the nozzle, first assemble the multi-channel plug (plug for nozzle) with the nozzle (the square plug is convenient for tool installation), and then install the assembly in the nozzle sleeve of the Christmas tree.

[0041] The internal thread at the rear end of the oil nozzle body is threadedly connected to the oil nozzle and the oil nozzle plug through the external thread on the outer side wall of the connecting end of the oil nozzle plug. The aperture opened on the central axis of the oil nozzle body is connected to the main channel on the plug. The aperture opened on the oil nozzle body is the same as the aperture of the main channel on the plug. When the oil nozzle is in use, the oil layer mixture in the aperture of the oil nozzle is sprayed out through the main channel and each branch channel. When impurities or heavy oil block 1-2 channels, the spraying is not affected, thereby extending the production time.

[0042] Reference Figures 1 to 7 As shown, the oil nozzle (the anti-blocking device for blowout well) of the utility model is composed of an oil nozzle body 1, a cube-shaped main body 2, a branch channel 5 (side oil inlet hole), and a passage 6 of the main body (front oil inlet hole). There is a channel (branch channel 5) on the surface of the cube-shaped main body 2 that is connected to the oil nozzle aperture. The channels on each surface are not evenly distributed to ensure the strength of the plug under the action of pressure difference. The four channels are connected to the passage 6 of the main body. The outer surface of the connecting end 3 is processed with an external thread, that is, the external thread processed on the outer surface of the connecting end 3 is connected to the internal thread 11 (internal thread of the oil nozzle body 1) at the rear end of the oil nozzle body. The design of the cube plug (cubic main body) is convenient for tool installation. The mixed liquid in the oil layer is blown out through the five channels on the cube plug. Impurities and heavy oil block 1-2 channels and still do not affect the blowout. The utility model is suitable for heavy oil blowout wells with oil nozzle sleeves. It uses the principle of increasing the oil flow channel by processing the crude oil nozzle. It is easy and reliable to operate and use, and can effectively prevent impurities and heavy oil from blocking the oil nozzle channel during blowout production and prolonging the production time. Figure 3 , Figure 5 and Figure 7 The dimensions in the dimensional drawings are in millimeters.

[0043] An embodiment of a screw plug for an oil nozzle:

[0044] A screw plug for an oil nozzle of the utility model has been described in detail in an embodiment of an oil nozzle, and will not be described again here.

[0045] An embodiment of a Christmas tree:

[0046] The utility model provides a Christmas tree, in which the nozzle sleeve of the Christmas tree is provided with the above-mentioned nozzle. The nozzle provided in the nozzle sleeve of the Christmas tree has been described in detail in an embodiment of the nozzle, and will not be described again here.

[0047] Specifically, the steps of installing the oil nozzle into the oil nozzle sleeve are as follows: the internal thread of the oil nozzle body is connected and tightened with the external thread of the oil nozzle plug connection end, and then the oil nozzle body is screwed into the oil nozzle sleeve of the oil tree through the external thread on the oil nozzle body.

[0048] Installation steps: stop the well → close the production gate → close the back pressure gate → open the sampling gate to drain → remove the oil nozzle threaded plug → use a socket wrench to open the oil nozzle → install the oil nozzle threaded plug → close the sampling gate → open the production gate → open the back pressure gate → release the spray.

Claims

1. A screw plug for an oil nozzle, characterized in that: It includes a main body and a connecting end arranged on the main body, wherein the main body and the connecting end are respectively provided with passages, and the passage on the main body is connected with the passage on the connecting end to form a main channel, and a plurality of holes are provided on the outer surface of the main body, and the plurality of holes are distributed along the radial direction of the main channel and connected with the main channel to form a plurality of branch channels, and the connecting end is used to connect the oil nozzle so that the oil layer mixture in the oil nozzle aperture can be sprayed out through the main channel and each branch channel.

2. The oil nozzle plug according to claim 1, characterized in that: The distribution of the plurality of holes on the outer side of the main body is uneven, and / or the plurality of branch channels are evenly distributed along the radial direction of the main channel.

3. The plug for the oil nozzle according to claim 1, characterized in that: The aperture of the passage on the main body is the same as the aperture of the passage on the connecting end, or the aperture of the passage on the main body is the same as the aperture of the passage on the connecting end and the apertures of several branch channels.

4. The plug for the oil nozzle according to claim 1, characterized in that: The passage on the main body is arranged at the central axis position of the main body, and the passage on the connecting end is arranged at the central axis position of the connecting end.

5. The oil nozzle plug according to any one of claims 1 to 4, characterized in that: The main channel is a straight channel.

6. The plug for the oil nozzle according to claim 5, characterized in that: Several of the branch channels are straight channels.

7. The plug for the oil nozzle according to claim 1, characterized in that: The outer side wall of the connection end is provided with an external thread for threaded connection with the oil nozzle.

8. The plug for the oil nozzle according to claim 1, characterized in that: The main body is in the shape of a regular tetrahedron, and branch channels are provided on the four sides of the main body.

9. A fuel nozzle, comprising a fuel nozzle body, wherein a hole is formed on the central axis of the fuel nozzle body, wherein: The rear end of the nozzle body is connected to the nozzle plug as claimed in any one of claims 1 to 8 so that the oil layer mixture in the nozzle aperture can be sprayed out through the main channel and each branch channel.

10. A Christmas tree, characterized in that: The nozzle sleeve of the Christmas tree is provided with the nozzle as claimed in claim 9.

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