Wellhead oil and gas storage device

Abstract

The utility model relates to the technical field of oil and gas storage, in particular to a wellhead oil and gas storage device which comprises a main platform, and a storage tank is erected on the main platform. An inner cavity of the storage tank body is divided into an upper-layer gas storage chamber and a lower-layer liquid accumulation chamber; an oil gas input pipe located in the middle, an exhaust pipe located at the top and a liquid discharge pipe located at the bottom are sequentially arranged on the storage tank body; a gas expander is further arranged at the end, extending into the storage tank body, of the oil gas input pipe and used for evenly diffusing oil gas into an inner cavity of the storage tank body. The oil-gas mixture can be naturally and efficiently separated through the layered design (the upper-layer gas storage chamber and the lower-layer liquid accumulation chamber) of the inner cavity of the storage tank body and the special structure (the narrow collecting baffle and the bent guide plate) of the gas expander. The gas rises to the upper layer to keep pure, and the liquid sinks to the lower layer to facilitate centralized treatment, thereby improving the storage efficiency and oil gas quality.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas storage, in particular to a wellhead oil and gas storage device. Background Art

[0002] During the oil and gas production process, efficient and safe storage of wellhead oil and gas is an important part of ensuring production continuity and environmental protection.

[0003] The most common way to store oil and gas, suitable for oil and gas storage of all sizes. Ground storage tanks are usually made of steel or aluminum materials, with large storage capacity and good sealing.

[0004] Traditional storage methods such as ground storage tanks often find it difficult to achieve effective separation of oil and gas. When the oil and gas mixture is directly input into the storage tank, due to the influence of gravity and flow rate, the oil and gas are prone to form uneven stratification in the tank, affecting the subsequent processing efficiency; storage methods such as ground storage tanks may not be thorough enough in dealing with accumulated liquid, and the accumulated liquid needs to be manually discharged regularly, which increases maintenance costs and operational complexity; in addition, traditional storage methods may have deficiencies in pressure control and sealing, increasing safety hazards such as leakage and explosion. Utility Model Content

[0005] The utility model aims at the technical problems existing in the prior art and provides a wellhead oil and gas storage device to solve the problem of uneven stratification of the oil and gas mixture during the oil and gas storage process.

[0006] The technical solution of the utility model for solving the above technical problems is as follows: a wellhead oil and gas storage device, including a main platform, on which a storage tank body is mounted; the inner cavity of the storage tank body is divided into an upper gas storage chamber and a lower liquid accumulation chamber; the storage tank body is sequentially equipped with an oil and gas input pipe located in the middle, an exhaust pipe located at the top and a liquid discharge pipe located at the bottom; an end of the oil and gas input pipe extending into the storage tank body is also equipped with an air diffuser, and the air diffuser is used to diffuse the oil and gas evenly into the inner cavity of the storage tank body.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Further, the air diffuser comprises:

[0009] Two sets of upper and lower baffles narrowing in the direction of oil and gas transmission;

[0010] A plurality of guide plates are evenly spaced and distributed on both sides of the upper and lower baffles.

[0011] Furthermore, the guide plates are bent, and oil and gas baffle channels are formed between adjacent guide plates.

[0012] Furthermore, an inspection port is reserved on the baffle, as well as an observation plate for covering the inspection port.

[0013] Furthermore, a maintenance pipe is provided on one side of the storage tank body, and a maintenance flange is installed at the maintenance opening of the maintenance pipe.

[0014] Furthermore, a liquid level pipe communicating with the lower liquid accumulation chamber is also provided outside the storage tank body.

[0015] Furthermore, the storage tank body is also provided with a gas pressure relief pipe connected to the upper gas storage chamber and a liquid pressure relief pipe connected to the lower liquid storage chamber in sequence.

[0016] Furthermore, it also includes an air nozzle extending into the lower liquid accumulation chamber of the storage tank body and facing the liquid discharge pipe.

[0017] Furthermore, an upper platform and a climbing frame for entering the upper platform are also set up on the storage tank body.

[0018] Moreover, the wellhead oil and gas storage device provided by the utility model has at least the following beneficial effects compared with the prior art:

[0019] 1. Through the layered design of the inner cavity of the storage tank (upper gas storage chamber and lower liquid storage chamber), and the special structure of the diffuser (narrow baffle and curved guide plate), the oil and gas mixture can be separated naturally and efficiently. The gas rises to the upper layer to remain pure, and the liquid sinks to the lower layer for centralized treatment, which improves storage efficiency and oil and gas quality.

[0020] 2. The device is equipped with gas pressure relief pipes and liquid pressure relief pipes, which can automatically or manually release the pressure when the internal pressure exceeds the safety threshold, effectively preventing equipment damage or safety accidents caused by excessive pressure. At the same time, the design of the gas nozzle also helps to improve the drainage efficiency, reduce the residual liquid accumulation, and further enhance the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of the utility model;

[0024] Figure 4 It is a schematic diagram of the local structure of the air diffuser of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Main platform; 2. Storage tank; 3. Oil and gas inlet pipe; 4. Exhaust pipe; 5. Drain pipe; 6. Diffuser; 6.1. Baffle; 6.2. Guide plate; 6.3. Observation plate; 7. Inspection pipe; 8. Liquid level pipe; 9. Gas pressure relief pipe; 10. Liquid pressure relief pipe; 11. Gas nozzle; 12. Upper platform; 13. Climbing frame. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the wellhead oil and gas storage device of the practical design comprises a main platform 1, on which a storage tank body 2 is mounted; the inner cavity of the storage tank body 2 is divided into an upper gas storage chamber and a lower liquid accumulation chamber; the storage tank body 2 is sequentially provided with an oil and gas input pipe 3 located in the middle, an exhaust pipe 4 located at the top and a liquid discharge pipe 5 located at the bottom; an end of the oil and gas input pipe 3 extending into the storage tank body 2 is also provided with an air diffuser 6, and the air diffuser 6 is used to diffuse the oil and gas evenly into the inner cavity of the storage tank body 2.

[0030] The oil-gas mixture enters the device through the oil-gas inlet pipe 3 located in the middle of the storage tank 2.

[0031] At the end of the oil and gas input pipe 3, the diffuser 6 plays a role in evenly diffusing the input oil and gas mixture into the inner cavity of the storage tank 2. This step promotes the full contact between the oil and gas mixture and the air, creating favorable conditions for the subsequent oil and gas separation.

[0032] The natural separation of oil and gas is achieved by utilizing the density difference between gas and liquid in the oil-gas mixture and the upper gas storage chamber and lower liquid storage chamber structure designed inside the storage tank 2.

[0033] The gas naturally rises to the upper gas storage chamber for storage due to its lower density, maintaining its purity and storage efficiency.

[0034] The liquid sinks to the lower liquid accumulation chamber due to its higher density, thus achieving centralized collection and treatment of the accumulated liquid.

[0035] The top exhaust pipe 4 is used to discharge the gas subsequently, and the bottom liquid discharge pipe 5 is responsible for regularly discharging the accumulated liquid in the lower liquid accumulation chamber to keep the tank clean and the storage space effectively utilized.

[0036] As an implementation method, Figure 4 As shown, the diffuser 6 comprises:

[0037] Two sets of baffles 6.1 narrowing along the oil and gas transmission direction;

[0038] A plurality of guide plates 6.2 are evenly spaced and distributed on both sides of the upper and lower baffles 6.1.

[0039] Specifically, the guide plates 6.2 are bent, and oil and gas baffle channels are formed between adjacent guide plates 6.2.

[0040] Specifically, an inspection port is reserved on the baffle plate 6.1, and an observation plate 6.3 is used to cover the inspection port.

[0041] The diffuser includes two sets of baffles 6.1 that narrow along the oil and gas transmission direction. This design allows the oil and gas mixture to pass through a gradually shrinking space before entering the storage tank. During this process, the flow rate of the oil and gas mixture will increase and the pressure will decrease accordingly, which is conducive to the subsequent uniform diffusion of the oil and gas.

[0042] On both sides of the upper and lower baffles 6.1, multiple curved guide plates 6.2 are evenly spaced. These guide plates not only guide the flow direction of oil and gas, but also form oil and gas baffle channels between adjacent guide plates through their curved shapes. These baffle channels can further refine the flow path of the oil and gas mixture, increase the contact area and contact time between oil and gas and air, and thus enhance the separation effect of oil and gas.

[0043] In order to facilitate the inspection and maintenance of the interior of the diffuser, an inspection port is reserved on the baffle 6.1 and is provided with an observation plate 6.3 for covering the inspection port.

[0044] As an implementation mode, a maintenance pipe 7 is further provided on one side of the storage tank body 2, and a maintenance flange is installed at the maintenance port of the maintenance pipe 7. By providing a convenient maintenance channel, ensuring the safety of the maintenance process, and increasing the flexibility and maintainability of the maintenance work, the normal operation and long-term use of the storage tank body 2 are jointly guaranteed.

[0045] As an embodiment, a liquid level pipe 8 communicating with the lower liquid accumulation chamber is further provided outside the storage tank body 2. The liquid level pipe 8 is a component communicating with the lower liquid accumulation chamber of the storage tank body 2, and its main principle is to monitor and display the liquid level height in the liquid accumulation chamber in real time.

[0046] As an implementation method, the storage tank body 2 is also provided with a gas pressure relief pipe 9 connected to the upper gas storage chamber and a liquid pressure relief pipe 10 connected to the lower liquid storage chamber. When the gas pressure in the upper gas storage chamber exceeds the set threshold, the gas pressure relief pipe will be opened automatically or manually to release the excess gas to a safe area, thereby preventing the tank body from exploding or being damaged due to excessive internal pressure; the presence of the liquid pressure relief pipe ensures that the excess liquid can be discharged in time under these circumstances to maintain the stability and safety of the tank body.

[0047] As an embodiment, it also includes an air nozzle 11 extending into the lower liquid accumulation chamber of the storage tank body 2 and facing the liquid discharge pipe 5. When the accumulated liquid in the lower liquid accumulation chamber needs to be discharged, the air nozzle can be passed with compressed air or other gas to form a disturbance or injection effect on the accumulated liquid. This disturbance helps to break the adhesion between the accumulated liquid and the tank wall, promote the flow and discharge of the accumulated liquid, and improve the liquid discharge efficiency.

[0048] As an implementation mode, an upper platform 12 and a climbing frame 13 for entering the upper platform 12 are also set up on the storage tank body 2. The combination of the upper platform 12 and the climbing frame 13 provides the operator with a safe and convenient working space and passage, further improving the overall performance and operating experience of the wellhead oil and gas storage device.

[0049] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0050] Although the preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0051] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A wellhead oil and gas storage device, characterized in that: The invention comprises a main platform (1), on which a storage tank body (2) is mounted; the inner cavity of the storage tank body (2) is divided into an upper gas storage chamber and a lower liquid storage chamber; the storage tank body (2) is provided with an oil and gas input pipe (3) located in the middle, an exhaust pipe (4) located at the top, and a liquid discharge pipe (5) located at the bottom in sequence; an end of the oil and gas input pipe (3) extending into the storage tank body (2) is also provided with an air diffuser (6), and the air diffuser (6) is used to diffuse the oil and gas evenly into the inner cavity of the storage tank body (2).

2. The wellhead oil and gas storage device according to claim 1, characterized in that: The air diffuser (6) comprises: Two sets of upper and lower baffles (6.1) narrowing along the oil and gas transmission direction; A plurality of guide plates (6.2) are evenly spaced and distributed on both sides of the upper and lower baffles (6.1).

3. The wellhead oil and gas storage device according to claim 2, characterized in that: The guide plates (6.2) are bent, and oil and gas baffle channels are formed between adjacent guide plates (6.2).

4. The wellhead oil and gas storage device according to claim 2, characterized in that: An inspection opening is reserved on the baffle plate (6.1), as well as an observation plate (6.3) for covering the inspection opening.

5. The wellhead oil and gas storage device according to claim 1, characterized in that: A maintenance pipe (7) is also provided on one side of the storage tank body (2), and a maintenance flange is installed at the maintenance opening of the maintenance pipe (7).

6. The wellhead oil and gas storage device according to claim 1, characterized in that: A liquid level pipe (8) communicating with the lower liquid accumulation chamber is also provided outside the storage tank body (2).

7. The wellhead oil and gas storage device according to claim 1, characterized in that: The storage tank body (2) is also provided with a gas pressure relief pipe (9) communicating with the upper gas storage chamber and a liquid pressure relief pipe (10) communicating with the lower liquid storage chamber in sequence.

8. The wellhead oil and gas storage device according to claim 1, characterized in that: It also includes an air spray pipe (11) extending into the lower liquid accumulation chamber of the storage tank (2) and facing the liquid discharge pipe (5).

9. The wellhead oil and gas storage device according to claim 1, characterized in that: An upper platform (12) and a climbing frame (13) for accessing the upper platform (12) are also arranged on the storage tank body (2).

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