Christmas tree model

Abstract

The utility model discloses a Christmas tree model, and relates to the technical field of model building. Comprising a casing four-way joint, a casing valve is connected to the casing four-way joint, a lower flange is connected to the casing four-way joint, an upper flange is connected to the lower flange, an oil pipe four-way joint is arranged on the upper flange, a main valve is arranged on the oil pipe four-way joint, a test valve is arranged on the oil pipe four-way joint, and a production valve is arranged on the oil pipe four-way joint. The casing pipe four-way joint is communicated with a pipe column, circulation of liquid in a casing pipe can be controlled through the casing pipe valve, the upper flange and the lower flange can be fastened together through the bolt set, the liquid can be conveyed upwards through the oil pipe four-way joint, and the output flow of the liquid can be adjusted through the production valve. The pressure can be monitored through the test valve, the actual situation of the Christmas tree during working can be accurately simulated, and functions in all aspects are verified.

Description

Technical Field

[0001] This utility model relates to the field of model construction technology, specifically to oil well tree models. Background Technology

[0002] As the core equipment for controlling wellhead production in oil and gas field development, the complexity of the well structure and the degree of functional integration directly affect the safety and production efficiency of the oil well. The well is mainly used for simulation accuracy, functional verification and cost control.

[0003] As a wellhead control device, the wellhead tree plays a crucial role. Its main function is to manage and regulate the fluids extracted from underground oil and gas reservoirs, ensuring the safety and efficiency of operations. However, traditional wellhead trees face numerous challenges in terms of sealing performance, structural stability, and ease of operation. Therefore, developing a new wellhead tree model that can not only improve operational efficiency but also reduce environmental risks is an urgent need for the current industry development.

[0004] To simulate the working principle of an oil wellhead, a scale model is typically built, followed by oil delivery testing. However, due to the high-pressure environment and complex fluid properties, traditional sealing materials often fail to meet the requirements for long-term use, leading to an increased risk of leakage. Furthermore, under conditions of significant vibration or pressure changes, components can easily loosen or detach, thus affecting the overall system safety. Utility Model Content

[0005] To address the issue that oil well tree model pipeline connections are typically made via flanges, and sealing rings are usually installed at the connection between the upper and lower flanges for sealing, these sealing rings can become damaged over time. Failure to replace damaged sealing rings can lead to reduced sealing performance, affecting the verification of the model's functionality. The purpose of this invention is to provide an oil well tree model.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: an oil well tree model, including a casing four-way valve, a casing valve connected to the casing four-way valve, a lower flange connected to the casing four-way valve, an upper flange connected to the lower flange, an oil pipe four-way valve on the upper flange, a main valve on the oil pipe four-way valve, a test valve on the oil pipe four-way valve, a production valve on the oil pipe four-way valve, a clamp on the oil pipe four-way valve, and an oil pipe top screw on the casing four-way valve.

[0007] Preferably, the lower surface of the upper flange has a sealing groove, the upper surface of the lower flange has an annular groove, a ring is installed inside the annular groove, a sealing ring is fixedly installed on the upper surface of the ring, the sealing ring is movably fitted with the inner surface of the sealing groove, a U-shaped groove is formed on the inner surface of the annular groove, a U-shaped block is fixedly installed on the outer surface of the ring, the U-shaped block is movably fitted with the inner surface of the U-shaped groove, a mounting screw is threaded into the U-shaped block, the end of the mounting screw is threaded into the interior of the lower flange, a groove is formed on the upper surface of the U-shaped block, and the mounting screw is threaded into the groove.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. This utility model connects to the tubing column via a sleeve four-way valve, controls the liquid flow within the sleeve via a sleeve valve, and the upper and lower flanges can be bolted together. The fluid output flow rate can be adjusted via a production valve, and the pressure can be monitored via a test valve.

[0010] 2. Before the upper flange and lower flange are connected together, the U-shaped block set on the outer surface of the ring can be placed into the U-shaped groove, and then the ring can be connected to the lower flange by the mounting screw. After the upper flange and lower flange are connected together, the sealing ring enters the sealing groove to improve the sealing performance and prevent fluid leakage.

[0011] When the sealing ring needs to be replaced later, simply turn the mounting screw, replace it with a ring containing the new sealing ring, and then fix it with the mounting screw. This improves the stability of the model's functional verification and enhances the structural stability to cope with high pressure and vibration environments.

[0012] 3. This structure uses fewer structural components, which can improve the overall assembly efficiency during the model assembly process. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the upper flange structure of this utility model.

[0016] Figure 3This is a schematic diagram of the sealing groove structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the sealing ring structure of this utility model.

[0018] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Test valve; 2. Production valve; 3. Clamp; 4. Pipe tee; 5. Main valve; 6. Upper flange; 7. Sleeve tee; 8. Lower flange; 9. Sleeve valve; 10. Pipe mounting screw; 11. Sealing groove; 12. Annular groove; 121. U-shaped groove; 13. Circular ring; 14. Sealing ring; 15. U-shaped block; 151. Groove; 16. Mounting screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Figure 1-5 As shown, this utility model provides an oil well tree model, including a casing tee 7, a casing valve 9 connected to the casing tee 7, a lower flange 8 connected to the casing tee 7, an upper flange 6 connected to the lower flange 8, a tubing tee 4 on the upper flange 6, a main valve 5 on the tubing tee 4, a test valve 1 on the tubing tee 4, a production valve 2 on the tubing tee 4, a clamp 3 on the tubing tee 4, and a tubing top screw 10 on the casing tee 7. The casing tee 7 is connected to the tubing string and serves as the core connecting component of the system, responsible for connecting all valves and flanges together.

[0022] The casing valve 9 controls the fluid flow within the casing. The upper flange 6 and lower flange 8 can be bolted together, forming a sealed connection to ensure safe fluid transmission within the system. Fluid can be transported upwards through the tubing four-way valve 4. The main valve 5 allows for emergency shut-off of the entire well, ensuring wellhead safety. The production valve 2 regulates the fluid output flow rate, and the test valve 1 monitors pressure, accurately simulating the actual conditions during well operation. All functions have been verified. The valve is installed on the casing four-way valve to control fluid flow.

[0023] A sealing groove 11 is provided on the lower surface of the upper flange 6, and an annular groove 12 is provided on the upper surface of the lower flange 8. A circular ring 13 is installed inside the annular groove 12, and a sealing ring 14 is fixedly provided on the upper surface of the circular ring 13. The sealing ring 14 is in contact with the inner surface of the sealing groove 11. The sealing ring 14 is made of high-quality materials such as fluororubber to enhance wear resistance and oil resistance.

[0024] The inner surface of the annular groove 12 is provided with a U-shaped groove 121, and the outer surface of the annular ring 13 is fixedly provided with a U-shaped block 15. The U-shaped block 15 is movably fitted with the inner surface of the U-shaped groove 121. A mounting screw 16 is threaded into the U-shaped block 15, and the end of the mounting screw 16 is threaded into the interior of the lower flange 8. A groove 151 is provided on the upper surface of the U-shaped block 15, and the mounting screw 16 is threaded into the groove 151 to prevent the mounting screw 16 from protruding. Before the upper flange 6 and the lower flange 8 are connected together, the U-shaped block 15 on the outer surface of the annular ring 13 can be placed into the U-shaped groove 121, and then the annular ring 13 can be connected to the lower flange 8 by the mounting screw 16. After the upper flange 6 and the lower flange 8 are connected together, the sealing ring 14 enters the sealing groove 11. When the sealing ring 14 needs to be replaced later, simply rotate the mounting screw 16, replace the annular ring 13 with the new sealing ring 14, and then fix it with the mounting screw 16.

[0025] Working principle: This utility model is connected to the tubing string through the casing four-way 7. The flow of liquid in the casing can be controlled by the casing valve 9. The upper flange 6 and the lower flange 8 can be bolted together. The liquid can be transmitted upward through the tubing four-way 4. The main valve 5 can shut off the entire well in an emergency to ensure the safety of the wellhead. The fluid output flow can be adjusted by the production valve 2. The pressure can be monitored by the test valve 1. It can accurately simulate the actual situation when the well is working. All functions have been verified.

[0026] Before the upper flange 6 and lower flange 8 are connected, the U-shaped block 15 on the outer surface of the ring 13 can be inserted into the U-shaped groove 121, and then the ring 13 can be connected to the lower flange 8 by the mounting screw 16. After the upper flange 6 and lower flange 8 are connected, the sealing ring 14 enters the sealing groove 11. When the sealing ring 14 needs to be replaced later, simply turn the mounting screw 16, replace it with the ring 13 with the new sealing ring 14, and then fix it with the mounting screw 16, which improves the stability of the model during operation. The combination design of the U-shaped block 15 and the U-shaped groove 121 improves the fitting accuracy between components. Even under high pressure or vibration, the components can remain firm and are not easy to loosen or fall off, thus ensuring the stability of the overall structure.

[0027] Each component is made of high-strength alloy steel or other corrosion-resistant materials to withstand high temperature and high pressure environments.

[0028] Check that the opening and closing functions of each valve are normal and record the operation response time. Ensure that all monitoring equipment is working properly to monitor the wellhead status in real time.

[0029] After assembly, the entire system is pressure-tested to check for leaks. The system is then operated under different pressure conditions to verify its stability and safety.

[0030] By optimizing the combination of the sealing groove and annular groove in the design, and using high-quality sealing rings, this model significantly improves sealing performance and effectively prevents fluid leakage. This is crucial for environmental protection and improving economic efficiency.

[0031] The rational layout of valves and clamps enables on-site personnel to operate quickly and accurately, greatly improving work efficiency and reducing the risk of human error.

[0032] Through optimized design and rigorous manufacturing processes, significant breakthroughs have been achieved in sealing performance, structural stability, and ease of operation. This innovative solution not only meets the safety requirements of modern oilfield operations but also provides a solid foundation for the future development of related technologies.

[0033] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A tree model, including a casing four-way (7), characterized in that, A casing valve (9) is connected to the casing tee (7), a lower flange (8) is connected to the casing tee (7), an upper flange (6) is connected to the lower flange (8), an oil pipe tee (4) is provided on the upper flange (6), a main valve (5) is provided on the oil pipe tee (4), a test valve (1) is provided on the oil pipe tee (4), a production valve (2) is provided on the oil pipe tee (4), and a clamp (3) is provided on the oil pipe tee (4).

2. The wellhead model as described in claim 1, characterized in that, The lower surface of the upper flange (6) is provided with a sealing groove (11), and the upper surface of the lower flange (8) is provided with an annular groove (12). A ring (13) is installed inside the annular groove (12), and a sealing ring (14) is fixedly provided on the upper surface of the ring (13). The sealing ring (14) is in movable contact with the inner surface of the sealing groove (11).

3. The wellhead model as described in claim 1, characterized in that, The casing tee (7) is equipped with a tubing hanger screw (10).

4. The wellhead model as described in claim 2, characterized in that, The inner surface of the annular groove (12) is provided with a U-shaped groove (121), and the outer surface of the annular ring (13) is fixedly provided with a U-shaped block (15). The U-shaped block (15) is in movable contact with the inner surface of the U-shaped groove (121). The U-shaped block (15) is threaded with a mounting screw (16), and the end of the mounting screw (16) is threaded into the interior of the lower flange (8).

5. The wellhead model as described in claim 4, characterized in that, The upper surface of the U-shaped block (15) has a groove (151) and the mounting screw (16) is threaded into the groove (151).

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