Pressure-adjustable air tap

Abstract

The invention relates to a pressure-adjustable air tap, and belongs to the technical field of oil extraction equipment. Comprising an air tap body, an adjusting valve element, a baffle and a spring, the adjusting valve element is sleeved with the spring, one end of the adjusting valve element penetrates through the air tap body, the adjusting valve element is sleeved with the baffle, and when pressure needs to be adjusted, the baffle can be rotated to press or release the spring to control opening pressure. The air tap is provided with the air tap hole and the expansion hole, the adjusting valve element is seated on the air tap hole through the spring, the spring is compressed through the baffle to adjust pressure, and the closing effect is achieved. The problems that oil well casing control gas pressure is too high and cannot be controlled, pressure is unstable, a valve is damaged, and backward flowing occurs when system pressure is high are solved, so that the purpose that an oil well conducts production within a reasonable casing pressure value range all the time is achieved, the liquid supply capacity of the oil well is enhanced, the working efficiency of an underground pump is improved, labor intensity is lowered, and safety operation risks are lowered.

Description

Technical Field

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

[0002] The method of controlling gas in oil wells at the oil production site is to control the gas by entering the oil system through valve control. If the casing pressure of the oil well is high and the valve is used for long-term control, it will also cause the gate to leak. In severe cases, the valve will be out of control, causing safety accidents. Moreover, if the gas cannot be controlled within the reasonable casing pressure value range, it will also affect the normal liquid output of the oil well. At present, there are 455 oil wells in normal production in a certain oil production operation area, including 38 oil wells with casing pressure, 15 oil wells without casing pressure, and the remaining 402 oil wells need gas control. Since the casing pressure of the oil well recovers quickly and there are many oil wells, the gas control cannot be timely, which seriously affects the normal oil output of the oil well. In the production of oil wells, it is often necessary to control the casing gas to increase the liquid level of the oil well and make reasonable use of the casing pressure. In the process of controlling gas with valves, the casing pressure cannot reach the required pressure range. If the casing pressure is too low, the mixed liquid in the system will flow back into the casing, which is not conducive to the normal production of the oil well. Therefore, a device that can both set the pressure and prevent gas-liquid backflow and control gas safely is needed. Summary of the invention

[0003] The invention discloses an adjustable pressure gas nozzle, which solves the problems of oil well casing control gas pressure being too high to be controlled, unstable pressure, valve damage, and backflow when the system pressure is high, thereby achieving the purpose of always producing the oil well within a reasonable casing pressure value range, enhancing the fluid supply capacity of the oil well, improving the working efficiency of the downhole pump, reducing labor intensity, and reducing safety operation risks.

[0004] The technical solution adopted by the present invention is an adjustable pressure air nozzle, including an air nozzle body, a regulating valve core, a baffle and a spring. The spring is sleeved on the regulating valve core, one end of the regulating valve core passes through the air nozzle body, and the baffle is sleeved on the regulating valve core. When the pressure needs to be adjusted, the compression amount of the spring is adjusted by rotating the baffle to control the opening pressure.

[0005] Furthermore, the air nozzle body is integrally formed from the top to the bottom by an air nozzle portion, a backing plate portion and an oil nozzle portion, and one end of the air nozzle portion is provided with an air nozzle hole for inserting a regulating valve core.

[0006] Furthermore, the side wall of the air nozzle portion is provided with a through hole, and a fixing screw for fixing the baffle passes through the through hole.

[0007] Furthermore, the pad portion is a circumscribed circular ring at the connection between the air nozzle portion and the oil nozzle portion.

[0008] Furthermore, the interior of the oil nozzle is a hollow enlarged hole, and the inner wall and the outer wall of the oil nozzle are both provided with threads.

[0009] Furthermore, the inner diameter of the enlarged hole is larger than the inner diameter of the air nozzle hole.

[0010] Furthermore, the regulating valve core is formed by a plug end and a screw end in one piece, the outer diameter of the plug end matches the air nozzle hole, and the baffle is threadedly connected to the screw end.

[0011] Furthermore, the outer wall of the baffle is also provided with an external thread, and when the fixing screw is screwed into the air nozzle body, the friction between the baffle and the fixing screw is increased to prevent the baffle and the regulating valve core from loosening due to excessive air pressure.

[0012] The invention discloses an adjustable pressure gas nozzle, which has the beneficial effect that the gas nozzle is provided with a gas nozzle hole and an enlarged hole, a spring is used to make the regulating valve core sit on the gas nozzle hole, and the pressure is adjusted by setting a baffle plate to compress the spring to play a closing role; in addition, a fixing screw is set to hold the baffle plate, increase the friction between the baffle plate and the fixing screw, and avoid the baffle plate and the regulating valve core from loosening due to excessive air pressure. The invention solves the problems of oil well casing control gas pressure being too high and unable to be controlled, unstable pressure, damage to valves, and backflow when the system pressure is high, so as to achieve the purpose of oil wells always producing within a reasonable casing pressure value range, enhance the liquid supply capacity of the oil well, improve the working efficiency of the downhole pump, reduce labor intensity, and reduce safety operation risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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.

[0014] Figure 1 Shown is a side view schematic diagram of embodiment 1;

[0015] Figure 2 Shown is a top view schematic diagram of Embodiment 1;

[0016] Figure 3 Shown is a schematic diagram of the decomposition of Example 1;

[0017] Figure 4 The figure shows the relationship between casing pressure and output in Example 1.

[0018] As shown in the figure: 1. Air nozzle body; 2. Adjusting valve core; 3. Baffle; 4. Spring; 5. Air nozzle part; 6. Backing plate part; 7. Oil nozzle part; 8. Air nozzle hole; 9. Through hole; 10. Fixing screw; 11. Enlarged hole; 12. Variable diameter hole.

[0019] Specific implementation methods

[0020] 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.

[0021] In order to further understand the content of the present invention, the present invention is further described below in conjunction with specific implementation methods.

[0022] Example 1: Figures 1 to 3 As shown, the adjustable pressure air nozzle comprises an air nozzle body 1, an adjusting valve core 2, a baffle plate 3 and a spring 4. The air nozzle body 1 is formed from top to bottom by an air nozzle portion 5, a backing plate portion 6 and an oil nozzle portion 7. One end of the air nozzle portion 5 is provided with an air nozzle hole 8 for inserting the adjusting valve core 2; a through hole 9 is provided on the side wall of the air nozzle portion 5, and a fixing screw 10 is provided on the through hole 9; the backing plate portion 6 is an external circular ring at the connection between the air nozzle portion 5 and the oil nozzle portion 7. The inside of the oil nozzle portion 7 is a hollow enlarged hole 11, and the inner wall and the outer wall of the oil nozzle portion 7 are both provided with threads. The inside of the air nozzle portion 5 is a reducing hole 12, and the reducing hole 12 is connected to the air nozzle hole 8.

[0023] The regulating valve core 2 is formed by a plug end and a screw end, the plug end extends into the air nozzle hole 8, the spring 4 is sleeved on the regulating valve core 2, and the baffle 3 is threadedly connected to the screw end. When the pressure needs to be adjusted, the baffle 3 is rotated to change the distance between the baffle 3 and the regulating valve core 2, so that the compression amount of the spring 4 between the two changes. The change in the compression amount of the spring 4 changes the elastic force of the spring 4 acting on the regulating valve core 2. The regulating valve core 2 is affected by the change in elastic force, so that its opening pressure changes.

[0024] The cock end is a cylinder with a pointed cap.

[0025] The outer wall of the baffle 3 is also provided with an external thread. When the fixing screw 10 is screwed into the air nozzle body 1, the friction between the baffle 3 and the fixing screw 10 is increased to prevent the baffle 3 and the regulating valve core 2 from loosening due to excessive air pressure.

[0026] The working principle of the present invention is to use spring 4 to make the regulating valve core 2 sit on the air nozzle hole 8 to play a closing role to prevent gas and liquid from flowing back. When the downhole pressure is greater than the pressure of spring 4, the regulating valve core 2 will be pushed open to control the gas normally. When the pressure needs to be adjusted, the opening pressure is controlled by rotating the baffle 3 to compress or release the spring 4.

[0027] When the invention is applied in practice, the pumping well adopts a double-wing process, and a casing gas recovery process is established on the gas recovery side of wells 24-66. The oil nozzle insulation sleeve and the test tee are welded together, which will not affect the normal testing and hot washing operations of the oil well. Tighten the baffle 3 in the gas nozzle to press down the spring 4 to increase the opening pressure, and then the gas nozzle is installed in the oil nozzle insulation sleeve through a threaded connection. According to the reasonable casing pressure value of the oil well, the casing pressure of the oil well is effectively, accurately and constantly controlled through the gas control process and the gas nozzle, which solves the problem of inaccurate human control and reduces the labor intensity of well station employees. The casing pressure of the oil well is always kept at a reasonable value during production, which promotes high and stable production of the oil well. At the same time, it prevents gas and liquid from backflowing into the casing. Figure 4 The process of exploring the reasonable casing pressure value of Well 24-66 was carried out. By tracking the implementation process of the effect, the changes in the casing pressure value, gas production, liquid production, dynamic liquid level, and dynamometer diagram of the oil well were tracked and compared with the previous oil well gas control effect to achieve the purpose of increasing production and efficiency. The early pressure was set relatively low at 0.8Mpa, and the oil well produced 10 tons of liquid and 2.9 tons of oil; when the pressure was set at 2.0Mpa, the oil well produced 11.6 tons of liquid and 3.4 tons of oil; finally, the pressure was set at 1.6Mpa, the oil well produced 12.2 tons of liquid and 4.4 tons of oil, and the oil well produced the highest liquid and oil production, and it has been maintaining normal production status.

[0028] 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. Adjustable air pressure nozzle, characterized in that: The invention comprises a gas nozzle body (1), a regulating valve core (2), a baffle (3) and a spring (4), wherein the spring (4) is sleeved on the regulating valve core (2), one end of the regulating valve core (2) passes through the gas nozzle body (1), and the baffle (3) is sleeved on the regulating valve core (2). When the pressure needs to be adjusted, the baffle (3) is rotated to adjust the compression amount of the spring (4) so ​​as to control the opening pressure.

2. The adjustable pressure gas nozzle according to claim 1, characterized in that: The air nozzle body (1) is integrally formed from the air nozzle part (5), the backing plate part (6) and the oil nozzle part (7) from top to bottom. One end of the air nozzle part (5) is provided with an air nozzle hole (8) for inserting the regulating valve core (2).

3. The adjustable pressure gas nozzle according to claim 2, characterized in that: A through hole (9) is provided on the side wall of the air nozzle portion (5), and a fixing screw (10) for fixing the baffle (3) passes through the through hole (9).

4. The adjustable pressure gas nozzle according to claim 2, characterized in that: The pad portion (6) is a circumscribed circular ring at the connection between the air nozzle portion (5) and the oil nozzle portion (7).

5. The adjustable pressure gas nozzle according to claim 2, characterized in that: The inside of the oil nozzle part (7) is a hollow enlarged hole (11), and the inner wall and the outer wall of the oil nozzle part (7) are both provided with threads.

6. The adjustable pressure gas nozzle according to claim 5, characterized in that: The inner diameter of the enlarged hole (11) is greater than the inner diameter of the air nozzle hole (8).

7. The adjustable pressure gas nozzle according to claim 2, characterized in that: The regulating valve core (2) is formed by a plug end and a screw end in one piece, the outer diameter of the plug end matches the air nozzle hole (8), and the baffle plate (3) is threadedly connected to the screw end.

8. The adjustable pressure gas nozzle according to claim 1, characterized in that: The outer wall of the baffle (3) is also provided with external threads.

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