Efficient sealing blowout preventer for oil production well

Abstract

The utility model discloses a kind of efficient sealing blowout preventer of oil production well, including blowout preventer body, the top of the blowout preventer body is fixedly connected with top mouth, the bottom of the blowout preventer body is fixedly connected with bottom pipe mouth, the outer wall of the bottom pipe mouth is fixedly connected with installation flange. The utility model can make that the efficient sealing blowout preventer of oil production well is more convenient to use, can limit the butt joint mouth position when the blowout preventer and wellhead butt joint first, staff does not need to check whether to align each screw hole from beginning, to reduce the working difficulty of overall work, reduce the working complexity of staff, improve the installation efficiency of overall installation work, speed up the working process of subsequent work, it is favorable to the quick installation of efficient sealing blowout preventer.

Description

Technical Field

[0001] This utility model belongs to the field of petroleum tool technology, specifically relating to a high-efficiency sealing blowout preventer for oil wells. Background Technology

[0002] An oil well is a borehole drilled according to an oilfield development plan for the extraction of oil. It is the channel through which oil rises from the underground oil layer to the surface. According to function, it can be divided into production wells (used for oil and gas extraction), injection wells (such as water injection wells and gas injection wells, used to inject substances into the reservoir to increase the oil layer pressure), observation wells (used to observe the underground dynamics of the oilfield), and adjustment wells (used to adjust development conflicts and recover reserves loss, etc.). Its drilling and extraction process involves complex geology, engineering, and technological processes, which are crucial to the development of the petroleum industry. In order to effectively prevent blowouts during oil well extraction, high-efficiency sealing blowout preventers for oil wells are used.

[0003] However, the high-efficiency sealing blowout preventers currently available on the market are not very convenient to use. They cannot be pre-positioned when the blowout preventer is docked and locked to the wellhead, requiring workers to align each mounting bolt hole from the beginning. This increases the difficulty and complexity of the work, reduces the overall installation efficiency, and hinders the rapid progress of subsequent work, making it difficult to install high-efficiency sealing blowout preventers quickly. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency sealing blowout preventer for oil wells, addressing the problems mentioned in the background section.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-efficiency sealing blowout preventer for oil wells, comprising a blowout preventer body, a top port fixedly connected to the top of the blowout preventer body, a bottom port fixedly connected to the bottom of the blowout preventer body, a mounting flange fixedly connected to the outer wall of the bottom port, an outer connecting block fixedly connected to the outer wall of the mounting flange, a mating block fixedly connected to the bottom of the outer connecting block, and a mating block fixedly connected to the bottom of the outer connecting block; an inner spring fixedly connected inside the mating block, a locking arc block fixedly connected to one end of the inner spring, a docking block movably connected to the top of the locking arc block, and a wellhead flange fixedly connected to one side of the docking block. This makes the high-efficiency sealing blowout preventer for oil wells more convenient to use, allowing the interface position to be limited before docking the blowout preventer with the wellhead, eliminating the need for operators to check the alignment of each bolt hole from the beginning, thereby reducing the overall work difficulty, reducing the complexity of the operator's work, improving the overall installation efficiency, accelerating the subsequent work process, and facilitating the rapid installation of the high-efficiency sealing blowout preventer.

[0006] To better solve the above-mentioned technical problems, the present invention adopts a further technical solution: the top of the mounting flange is movably connected with a fixing bolt, and the outer wall of the fixing bolt is movably connected with the inside of the wellhead flange, which can lock the installation connection of the blowout preventer, improve the overall stability of the blowout preventer during operation, and facilitate the long-term use of the blowout preventer.

[0007] To better solve the above-mentioned technical problems, the present invention adopts a further technical solution: the top of the blowout preventer body is movably connected to an upper cover, the top of the upper cover is movably connected to a top bolt, and the outer wall of the top bolt is movably connected to a lower cover, so that the upper cover and the lower cover can be locked simultaneously on the surface of the blowout preventer.

[0008] To better solve the above-mentioned technical problems, the present invention adopts a further technical solution: the top of the upper clamp is movably connected to a threaded column, and the top of the threaded column is fixedly connected to a lifting buckle, which allows the threaded column and its lifting buckle to be quickly disassembled and installed, eliminating the need for the lifting components to be exposed to the working environment for a long time, reducing the impact of the surrounding environment on the lifting components, improving the service life of the lifting components, and reducing the number of subsequent maintenance and repairs.

[0009] To better solve the above-mentioned technical problems, the present invention adopts a further technical solution: the bottom of the mounting flange is movably connected to the top of the wellhead flange, the diameter of the mounting flange and the wellhead flange are equal, and the top of the mounting flange and the top of the wellhead flange are both provided with six threaded ports.

[0010] To better solve the above-mentioned technical problems, the present invention adopts a further technical solution: one side of the locking arc block is movably connected to the interior of the insertion block through an inner spring, and there are two locking arc blocks and two insertion blocks, and each insertion block is provided with two inner springs inside.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0012] By designing the blowout preventer body, top port, bottom port, mounting flange, external connection block, insertion block, internal spring, locking arc block, docking block, and wellhead flange, the high-efficiency sealing blowout preventer for oil wells can be made more convenient to use. It can limit the position of the interface when the blowout preventer is docked with the wellhead, eliminating the need for workers to check whether each bolt hole is aligned from the beginning. This reduces the overall difficulty and complexity of the work, improves the overall installation efficiency, speeds up the subsequent work process, and facilitates the rapid installation of the high-efficiency sealing blowout preventer.

[0013] The lifting components used during installation can be disassembled and installed using the upper clamp, top bolt, lower clamp, threaded post, and lifting buckle. This eliminates the need for the lifting components to be exposed to the working environment for extended periods, reducing the impact of the surrounding environment on the lifting components, extending their service life, and reducing the frequency of subsequent maintenance. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a top view of the structure of this utility model;

[0018] Figure 4 This is a side sectional view of the structure of this utility model;

[0019] Figure 5 This is a utility model Figure 4 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Blowout preventer body; 2. Top port; 3. Bottom port; 4. Mounting flange; 5. External connector; 6. Insertion block; 7. Internal spring; 8. Engaging arc block; 9. Connecting block; 10. Wellhead flange; 11. Fixing bolt; 12. Upper clamp; 13. Top bolt; 14. Lower clamp; 15. Threaded post; 16. Lifting clip. Detailed Implementation

[0021] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-5A high-efficiency sealing blowout preventer for oil wells includes a blowout preventer body 1. A top port 2 is fixedly connected to the top of the blowout preventer body 1, and a bottom port 3 is fixedly connected to the bottom of the blowout preventer body 1. A mounting flange 4 is fixedly connected to the outer wall of the bottom port 3. An outer connecting block 5 is fixedly connected to the outer wall of the mounting flange 4. A mating block 6 is fixedly connected to the bottom of the outer connecting block 5. An inner spring 7 is fixedly connected inside the mating block 6. A locking arc block 8 is fixedly connected to one end of the inner spring 7. A docking block 9 is movably connected to the top of the locking arc block 8. A wellhead flange 10 is fixedly connected to one side of the docking block 9. This design makes the high-efficiency sealing blowout preventer for oil wells more convenient to use. It allows for pre-positioning of the interface when the blowout preventer is docked with the wellhead, eliminating the need for operators to check alignment of each bolt hole from the beginning. This reduces the overall work difficulty and complexity for operators, improves the overall installation efficiency, and accelerates the subsequent work process, facilitating the rapid installation of the high-efficiency sealing blowout preventer.

[0023] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: a fixing bolt 11 is movably connected to the top of the mounting flange 4, and the outer wall of the fixing bolt 11 is movably connected to the inside of the wellhead flange 10, which can lock the installation connection of the blowout preventer, improve the overall stability of the blowout preventer during operation, and facilitate the long-term use of the blowout preventer. An upper cover 12 is movably connected to the top of the blowout preventer body 1, a top bolt 13 is movably connected to the top of the upper cover 12, and a lower cover 14 is movably connected to the outer wall of the top bolt 13, which can lock the upper cover 12 and the lower cover 14 simultaneously on the surface of the blowout preventer. A threaded post 15 is movably connected to the top of the upper cover 12, and a lifting buckle 16 is fixedly connected to the top of the threaded post 15, which can allow the threaded post 15 and its lifting buckle 16 to be quickly disassembled and installed, without the lifting components being exposed to the working environment for a long time, reducing the impact of the surrounding environment on the lifting components, improving the service life of the lifting components, and reducing the number of subsequent maintenance.

[0024] The bottom of the mounting flange 4 is movably connected to the top of the wellhead flange 10. The mounting flange 4 and the wellhead flange 10 have the same diameter. The top of the mounting flange 4 and the top of the wellhead flange 10 are both provided with six threaded holes. One side of the locking arc block 8 is movably connected to the inside of the insertion block 6 through an inner spring 7. There are two locking arc blocks 8 and two insertion blocks 6. Each insertion block 6 is provided with two inner springs 7.

[0025] like Figure 1-5As shown, when the user needs to use it, the external lifting components are first locked to the lifting buckle 16. After the installation flange 4 is moved to the top of the wellhead flange 10, the two external connecting blocks 5 are aligned with the openings of the two connecting blocks 9 and lowered. At this time, the arc surface of the locking arc block 8 is compressed and contracted, and the inner spring 7 is also compressed and contracted, so that the locking arc block 8 retracts into the interior of the connecting block 6. When the locking arc block 8 is below the wellhead flange 10, it will be ejected, thus completing the limiting of the installation flange 4 and the wellhead flange 10, and thus aligning the multiple threaded ports. At that time, the installation flange 4 and the wellhead flange 10 can be fixed by multiple fixing bolts 11, thus completing the quick installation of the blowout preventer.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-efficiency sealing blowout preventer for oil wells, comprising a blowout preventer body (1), characterized in that: The top of the blowout preventer body (1) is fixedly connected to a top port (2), the bottom of the blowout preventer body (1) is fixedly connected to a bottom port (3), the outer wall of the bottom port (3) is fixedly connected to a mounting flange (4), the outer wall of the mounting flange (4) is fixedly connected to an outer connecting block (5), the bottom of the outer connecting block (5) is fixedly connected to a mating block (6), the inside of the mating block (6) is fixedly connected to an inner spring (7), one end of the inner spring (7) is fixedly connected to a locking arc block (8), the top of the locking arc block (8) is movably connected to a docking block (9), and one side of the docking block (9) is fixedly connected to a wellhead flange (10).

2. The high-efficiency sealing blowout preventer for oil wells according to claim 1, characterized in that: The top of the mounting flange (4) is movably connected to a fixing bolt (11), and the outer wall of the fixing bolt (11) is movably connected to the inside of the wellhead flange (10).

3. The high-efficiency sealing blowout preventer for oil wells according to claim 1, characterized in that: The top of the blowout preventer body (1) is movably connected to an upper cover (12), the top of the upper cover (12) is movably connected to a top bolt (13), and the outer wall of the top bolt (13) is movably connected to a lower cover (14).

4. The high-efficiency sealing blowout preventer for oil wells according to claim 3, characterized in that: The top of the upper cover (12) is movably connected to a threaded post (15), and the top of the threaded post (15) is fixedly connected to a hook (16).

5. The high-efficiency sealing blowout preventer for oil wells according to claim 1, characterized in that: The bottom of the mounting flange (4) is movably connected to the top of the wellhead flange (10). The mounting flange (4) and the wellhead flange (10) have the same diameter, and both the top of the mounting flange (4) and the top of the wellhead flange (10) are provided with six threaded ports.

6. The high-efficiency sealing blowout preventer for oil wells according to claim 1, characterized in that: One side of the engaging arc block (8) is movably connected to the interior of the insert block (6) via an inner spring (7). There are two engaging arc blocks (8) and two insert blocks (6), and each insert block (6) has two inner springs (7) inside.

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