Adjustable oil nozzle device

Abstract

The invention relates to an adjustable oil nozzle device, and belongs to the technical field of oil and gas exploitation equipment. One end of an oil inlet central pipe is connected with an inner screw thread of an oil nozzle sleeve, and the other end is connected with a reducer union; the other end of the reducer union is connected with the control shaft; the connector sleeves the outer sides of the reducer union and the control shaft, a plurality of holes are formed in the control shaft in the radial direction, a through hole is formed in the side wall of the connector, and the through hole corresponds to one hole in the control shaft; one end of the oil nozzle body is connected with the oil nozzle sleeve, an annular space formed by the inner wall of the oil nozzle body and the outer wall of the oil inlet center pipe is an oil gas outlet channel, one end of the annular space is shielded by a reducer union, and an oil nozzle hole is formed in the side wall of the oil nozzle body and communicated with an oil outlet mechanism. The sealing ring is sleeved on the connecting plug, and the pressing cap is tightly screwed on the outer side of the connector. Compared with the prior art, the holes are formed in the control shaft, only the control shaft needs to be rotated during replacement, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to an adjustable oil nozzle device, belonging to the technical field of oil and gas production equipment. Background Art

[0002] Flowing oil and gas wells are oil wells that rely on the energy of the oil reservoir itself to spray oil and gas to the ground; pumping wells need to use some external forces to bring crude oil in the formation to the ground. Both types of wells have the characteristics of large liquid output, large gas volume and high pressure. In the daily production process, in order to control its flow rate, reduce its pressure, and avoid sand production problems caused by excessive production pressure difference, fixed oil nozzle throttling production is often used as one of the effective methods.

[0003] The fixed oil nozzle belongs to the throttling element, and its structure is very simple: a through hole is drilled on the oil nozzle body, and the outlet end is a square section, which is for applying the oil nozzle wrench to facilitate the installation and removal of the oil nozzle: the inlet end has a thread, and the oil nozzle is installed in the oil nozzle sleeve through the thread for use. By replacing the oil nozzles with different holes, the reasonable production pressure difference of the oil and gas wells can be controlled. According to its structural characteristics, it can also be called a single-hole simple oil nozzle. There is a hole on its main body, and the hole diameter ranges from 2-20mm, and each difference of 0.5mm is a grade. The outlet end is a section with two arcs on both sides and two straight lines on both sides. The installation and removal operations can be completed by applying the oil nozzle wrench. The inlet end has a thread, which can be installed in the oil nozzle sleeve through the thread. According to the pressure and production conditions of the gas well, different sizes are replaced for placement. Since the fixed oil nozzle aperture is fixed and cannot be changed, the change of grade is achieved by replacing oil nozzles of different specifications. At the same time, the oil nozzle needs to be removed for gas well replacement and drainage. Because the original fixed oil nozzle has only one size of hole, single structure and performance, it takes ten steps to replace it, and two people are required to cooperate in the operation, which is complicated and cumbersome. In the normal gas well production process, the gas well contains a variety of impurities in the blowout fluid. Under the drastic changes of factors such as pressure and temperature, these impurities will condense and accumulate, which can easily cause the oil nozzle to be frequently blocked. The oil nozzle sleeve currently used has a single function and can only be used to load and unload the oil nozzle. If the oil nozzle is not removed and unblocked, there are two problems: First, when the staff holds a thin steel wire to pierce the oil nozzle in the oil nozzle sleeve, because the diameter of the oil nozzle hole and the steel wire are very small, it is difficult for the steel wire to align with the oil nozzle hole. In actual work, it takes multiple operations to succeed, and the work efficiency is very low; second, after the oil nozzle is blocked, the pressure in the structure in front of the oil nozzle is very high, so in the process of clearing the oil nozzle, the oil nozzle blockage is very easy to spray out at high speed, injuring the operator and causing serious safety accidents, so its safety is very poor. If the nozzle is to be removed for dredging, the removal of the nozzle is completely achieved by the friction between the square section of the nozzle and the inner surface of the nozzle wrench sleeve. The nozzle is very easy to fall off from the sleeve and fall into the riser, causing production accidents. With the continuous refinement of oil and gas well management over the years, the pressure control and the time of replacement spraying have been continuously optimized, and the replacement of nozzles has become more frequent. However, the long time to replace the nozzle causes the well to be shut in for a longer time, the labor intensity is high, and the problems of accidents are becoming more and more prominent. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention discloses an adjustable oil nozzle device, wherein a control shaft is installed on the oil nozzle, one end of which is an oil inlet channel, and the other end is a connecting plug with a regular N-gon, and holes of N commonly used sizes are arranged on the control shaft, and holes of each size correspond to the sides of the regular N-gon, and the size marked on each side is the corresponding hole size. Therefore, the operation of replacing holes of different sizes can be completed by simply rotating the connecting plug with the regular N-gon and aligning the side corresponding to the required hole with the through hole of the connecting head, which takes a total of 4 seconds and can be operated by one person without stopping the well, which greatly improves the opening rate of a single well and can well solve the problems of long time consumption, high labor intensity of employees, poor safety performance, and well stopping operation when replacing fixed oil nozzles.

[0005] The technical solution adopted by the present invention is: an adjustable oil nozzle device, including an oil nozzle sleeve, an oil nozzle body, an oil inlet center pipe, an oil outlet mechanism, a reducer, a connector, a control shaft, a sealing ring and a pressure cap;

[0006] One end of the oil inlet center pipe has a threaded thread connected to the inner thread of the oil nozzle sleeve, and the other end is connected to the reducer; the other end of the reducer is connected to the control shaft; the connector is sleeved on the outside of the reducer and the control shaft, a plurality of holes are arranged on the outer periphery of the control shaft, and a through hole is arranged on the side wall of the connector, and the through hole can be made to correspond to any hole by rotating the control shaft;

[0007] One end of the nozzle body is connected to the nozzle sleeve. The annular space formed by the inner wall of the nozzle body and the outer wall of the oil inlet center pipe is the oil and gas outlet channel. One end of the annular space is blocked by a reducer. A nozzle hole is provided on the side wall of the nozzle body, and the nozzle hole is connected to the oil outlet mechanism. The sealing ring is set on the connecting plug, and the pressure cap is tightly screwed on the outside of the connecting head.

[0008] Furthermore, the oil outlet mechanism includes a branch pipe, a high-pressure welded elbow A, a high-pressure welded elbow B, an intermediate pipe, a buffer pipe and a baffle; one end of the branch pipe is connected to the oil nozzle hole, and the other end is connected to the high-pressure welded elbow A; the high-pressure welded elbow A and the high-pressure welded elbow B are connected through the intermediate pipe, the other end of the high-pressure welded elbow B is connected to the buffer pipe, and the end of the buffer pipe is connected to the connecting head through the baffle.

[0009] Furthermore, one end of the control shaft is connected to the reducer, and the other end is a connecting plug with a regular N-gon.

[0010] Furthermore, the N value of the regular N-gon connecting plug is the same as the number of holes.

[0011] Furthermore, the sizes of the holes are different, and the size of each hole is marked on the side of the connecting plug accordingly.

[0012] Furthermore, the diameter of the through hole is not less than the diameter of the largest hole on the control shaft.

[0013] The present invention discloses an adjustable oil nozzle device, which has the following beneficial effects:

[0014] (1) The replacement of the eyelet is convenient and quick: the original fixed oil nozzle only has one size of eyelet, with a single structure and performance. It takes ten operations to replace it, and requires two people to cooperate in the operation, which is complicated and cumbersome. Compared with the existing technology, the control shaft contains five commonly used sizes of eyelets. When replacing, you only need to rotate the control shaft so that the required eyelet is facing the high-voltage welding elbow. The entire replacement process takes 4 seconds and can be completed by one person, saving time and effort.

[0015] (2) Replacement without stopping the well: The replacement of the original fixed oil nozzle requires stopping the well, and it takes 40 to 50 minutes to replace the oil nozzle once, which affects the production time of the single well. Compared with the prior art, the present invention does not need to stop the well when replacing holes of different sizes, thereby improving the production time of the oil and gas well.

[0016] (3) High safety performance: The original fixed oil nozzle is prone to heavy object collision during the process of clearing or replacing the hole, resulting in casualties, and has poor safety performance. The present invention reduces the process of replacing the hole and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the structural assembly of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the nozzle body of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the reducer of the present invention;

[0021] Figure 4 This is a schematic diagram of the connector structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the pressure cap structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the control shaft structure in Example 1 of the present invention;

[0024] Figure 7 for Figure 6 Schematic cross-section diagram of .

[0025] In the figure: 1. Nozzle sleeve; 2. Nozzle body; 3. Oil inlet center pipe; 4. Branch pipe; 5. High-pressure welding elbow A; 6. Intermediate pipe; 7. High-pressure welding elbow B; 8. Buffer tube; 9. Baffle; 10. Connector; 11. Reducer; 12. Control shaft; 13. Sealing ring; 14. Pressure cap; 15. Cylinder; 16. Connecting plug; 17. Eyelet; 20. Through hole; 21. Nozzle hole.

[0026] Specific implementation methods

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to further understand the content of the present invention, the present invention is further described below in conjunction with specific implementation methods.

[0029] Embodiment 1:

[0030] like Figure 1-7 As shown, an adjustable oil nozzle device comprises an oil nozzle sleeve 1, an oil nozzle body 2, an oil inlet center tube 3, an oil outlet mechanism, a reducer 11, a connector 10, a control shaft 12, a sealing ring 13 and a pressure cap 14; the oil inlet center tube 3 is a hollow steel tube, one end of the tube wall has a thread, which is connected to the internal thread of the oil nozzle sleeve 1, and the other end is connected to the reducer 11; the end with the thread is the oil inlet end; the other end of the reducer 11 is connected to the control shaft 12; the connector 10 is sleeved on the outer side of the reducer 11 and the control shaft 12, a plurality of holes 17 are arranged on the outer periphery of the control shaft 12, and a through hole 20 is arranged on the side wall of the connector 10, and the through hole 20 can be made to correspond to any hole 17 by rotating the control shaft 12; the diameter of the through hole 20 is equal to the diameter of the largest hole 17 on the control shaft 12.

[0031] The nozzle body 2 is a hollow steel pipe, one end of which is connected to the nozzle sleeve 1. The annular space formed by the inner wall of the nozzle body 2 and the outer wall of the oil inlet center pipe 3 is an oil and gas outlet channel. One end of the annular space is blocked by a reducer 11. A nozzle hole 21 is provided on the side wall of the nozzle body 2, and the nozzle hole 21 is connected to the oil outlet mechanism.

[0032] The sealing ring 13 is sleeved on the connecting plug 16 to seal the gap between the control shaft 12 and the connecting head 10 to prevent oil and gas leakage; the pressure cap 14 is a hollow end cover with a thread inside, which is tightly screwed on the outside of the connecting head 10.

[0033] The oil outlet mechanism includes a branch pipe 4, a high-pressure welded elbow A5, a high-pressure welded elbow B7, an intermediate pipe 6, a buffer pipe 8 and a baffle 9; one end of the branch pipe 4 is connected to the oil nozzle hole 21, and the other end is connected to the high-pressure welded elbow A5; the high-pressure welded elbow A5 and the high-pressure welded elbow B7 are connected through the intermediate pipe 6, the other end of the high-pressure welded elbow B7 is connected to the buffer pipe 8, and the end of the buffer pipe 8 is connected to the connector 10 through the baffle 9.

[0034] One end of the control shaft 12 is a cylinder 15, which is connected to the reducer 11 as an oil and gas inlet channel, and the other end is a connection plug 16 with a regular pentagon. There are 5 holes 17, each of which has a different size, and the size of each hole 17 is marked on the side of the connection plug 16. That is to say, 5 commonly used sizes of holes 17 are set on the cylinder 15, and the diameters of the holes 17 are 2, 4, 6, 8, and 35 mm respectively; each size of the hole 17 corresponds to the side of the regular pentagon, and the engraved size marked on each side is the corresponding size of the hole 17. By designing this control shaft 12, it is convenient for operators to determine which size of hole 17 is connected to the through hole 20 on the connector 10 according to the engraved size of the connection plug 16, and oil and gas can only enter the oil outlet mechanism from a certain hole 17. Therefore, it is only necessary to rotate the connecting plug 16 with a regular pentagon so that the side corresponding to the required hole 17 is aligned with the connecting plug 10 to complete the operation of replacing holes 17 of different sizes. It takes a total of 4 seconds and can be operated by one person without stopping the well, which greatly improves the opening rate of a single well and can well solve the problems of long time consumption, high labor intensity of employees, poor safety performance, and well stopping operation when replacing fixed oil nozzles.

[0035] The internal oil and gas flow process of the present invention is as follows: crude oil and natural gas enter from the oil inlet center pipe 3, enter the buffer pipe 8 through the hole 17 on the control shaft 12 and the through hole 20 on the connector 10, and then enter the oil and gas channel of the high-pressure welded elbow B7, and then enter the annular space between the inner wall of the nozzle body 2 and the outer wall of the oil inlet center pipe 3 from the nozzle hole 21 on the nozzle body 2, and finally enter the station entry process from the nozzle sleeve 1.

[0036] Field application results show that the time for replacing the nozzle in reverse process can be saved by 45 minutes at a time. The adjustable nozzle is easy to install without process modification, which reduces well shutdown time and avoids single well production loss. The operation is simple. When adjusting the nozzle, it can be achieved by simply turning the connecting plug 16 with a wrench, which reduces the operational risk when replacing the nozzle. The operation is convenient and efficient, and there is no need to reverse the process to stop the well or open the pipeline, which increases the well opening rate.

[0037] The present invention reduces the labor intensity of employees and saves operation time. When replacing holes 17 of different sizes, it is only necessary to rotate the control shaft 12 so that the required holes 17 are aligned with the through hole 20. The entire replacement process takes a total of 4 seconds, which saves time and effort, avoids the occurrence of heavy object collision when replacing the oil nozzle, reduces the occurrence of casualties, improves the safety performance of the equipment, realizes the replacement without stopping the well, and greatly improves the production time rate of the oil and gas well. The buffer tube 8 provides a buffer space for the high-pressure welding elbow B7, which plays a role in reducing vibration and impact.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable oil nozzle device, characterized in that: It comprises an oil nozzle sleeve (1), an oil nozzle body (2), an oil inlet center pipe (3), an oil outlet mechanism, a reducer (11), a connector (10), a control shaft (12), a sealing ring (13) and a pressure cap (14); One end of the oil inlet center pipe (3) is connected to the inner thread of the oil nozzle sleeve (1), and the other end of the oil inlet center pipe (3) is connected to the reducer (11); the other end of the reducer (11) is connected to the control shaft (12); the connector (10) is sleeved on the outer sides of the reducer (11) and the control shaft (12), a plurality of holes (17) are arranged on the outer periphery of the control shaft (12), and a through hole (20) is arranged on the side wall of the connector (10), and the through hole (20) can be made to correspond to any hole (17) by rotating the control shaft (12); One end of the nozzle body (2) is connected to the nozzle sleeve (1); an annular space formed by the inner wall of the nozzle body (2) and the outer wall of the oil inlet center pipe (3) is an oil and gas outlet passage; one end of the annular space is blocked by a reducer (11); a nozzle hole (21) is provided on the side wall of the nozzle body (2); the nozzle hole (21) is connected to the oil outlet mechanism; a sealing ring (13) is sleeved on the connecting plug (16); and a pressure cap (14) is tightly screwed on the outer side of the connecting head (10).

2. The adjustable oil nozzle device according to claim 1, characterized in that: The oil outlet mechanism comprises a branch pipe (4), a high-pressure welding elbow A (5), a high-pressure welding elbow B (7), an intermediate pipe (6), a buffer pipe (8) and a baffle (9); one end of the branch pipe (4) is connected to the oil nozzle hole (21), and the other end of the branch pipe (4) is connected to the high-pressure welding elbow A (5); the high-pressure welding elbow A (5) and the high-pressure welding elbow B (7) are connected through the intermediate pipe (6), the other end of the high-pressure welding elbow B (7) is connected to the buffer pipe (8), and the end of the buffer pipe (8) is connected to the connector (10) through the baffle (9).

3. The adjustable oil nozzle device according to claim 1, characterized in that: One end of the control shaft (12) is connected to the reducer (11), and the other end of the control shaft (12) is a connecting plug (16) with a regular N-shaped polygon.

4. The adjustable oil nozzle device according to claim 3, characterized in that: The value N of the regular N-sided connecting plug (16) is the same as the number of the holes (17).

5. The adjustable oil nozzle device according to claim 4, characterized in that: The sizes of the holes (17) are different, and the size of the holes (17) is marked on the side of the connecting plug (16) accordingly.

6. The adjustable oil nozzle device according to claim 1, characterized in that: The diameter of the through hole (20) is not less than the diameter of the largest hole (17) on the control shaft (12).

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