Multi-structure combined casing head device

Abstract

The utility model discloses a multi-structure combined casing head device, which belongs to the technical field of well drilling exploitation, and is characterized by comprising a casing head body, the top of the casing head body is fixedly connected with a connecting mechanism, the top of the connecting mechanism is fixedly connected with a fixing mechanism, the casing head body serves as a foundation structure of the whole device, and the fixing mechanism is fixedly connected with the casing head body. Supporting and connecting points are provided for other components, it is ensured that the whole casing head device stably and reliably plays a role in the operation environments such as oil and gas extraction and bears underground pressure and various external force, the connecting pipe is connected with the casing head body and other equipment and plays a key transition role, it is ensured that different parts are tightly and stably connected, and the service life of the casing head device is prolonged. The clamping plates are arranged in the sliding grooves, smooth transmission of media such as oil gas is achieved, the fixing grooves provide mounting and moving spaces for the clamping plates, the clamping plates can move up and down under specific conditions, the connecting and fixing functions of the clamping plates and other components are achieved, and the sliding grooves provide guidance for movement of the clamping plates.

Description

Technical Field

[0001] This utility model relates to the field of drilling and mining technology, and in particular to a multi-structure combined casing head device. Background Technology

[0002] The casing head is used to fix the wellhead of the drilled well, connect the wellhead casing string, support the weight of the technical casing and the oil layer casing, seal the annular space between each layer of casing, provide a transition connection for the installation of blowout preventers, tubing heads, and production trees, and through the two side ports on the casing head body, it is possible to carry out construction such as mud filling, monitoring, and adding balance fluid.

[0003] The existing method uses the expansion of an air bladder to press the sealing gasket against the outer wall of the pipe. However, the air bladder has poor overall high-temperature resistance. Since the pipe inside the sleeve head often needs to transport some high-temperature liquids, the air bladder will soften when it is exposed to high temperature for a long time. As a result, the air bladder cannot press the sealing gasket tightly against the outer wall of the pipe for a long time. Therefore, there is still a problem of poor sealing performance of the sleeve head under high temperature conditions.

[0004] Existing patent (publication number: CN217950316U) discloses a multi-seal combination sleeve head device, comprising a sleeve head body, a hanger fixed to the inner wall of the sleeve head body, a pipe body disposed on the inner wall of the hanger, a set of internal threads on the inner wall of the sleeve head body, a first semi-circular connecting block and a second semi-circular connecting block connected to the inner wall of the sleeve head body via the threads, a first semi-circular sealing cylinder and a second semi-circular sealing cylinder respectively fixed to the inner walls of the first semi-circular sealing cylinder and the second semi-circular sealing cylinder, and multiple high-temperature resistant rubber rings respectively fixed to the inner walls of the first semi-circular connecting block and the second semi-circular connecting block, external threads on the outer walls of the first semi-circular connecting block and the sleeve head body, a set of fixing rings fixed to the outer wall of the first semi-circular connecting block and the second semi-circular connecting block, and sealing rings fixed to the outer walls of the first semi-circular connecting block and the second semi-circular connecting block. This invention improves the overall heat resistance of the first semi-circular sealing cylinder and the second semi-circular sealing cylinder without affecting the sealing effect on the outer wall of the pipe body.

[0005] Existing patents offer solutions to the above problems, but they lack a structure for quick connection of the sleeve head to other equipment. This makes it impossible to quickly connect and disconnect the sleeve head from other related equipment when it is necessary to install, replace, or repair the equipment, thereby reducing work efficiency.

[0006] To address this, a multi-structure combined sleeve head device is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a multi-structure combined casing head device, which can solve the problem that existing drilling and mining operations lack a structure for quick connection between the casing head and other equipment, resulting in the inability to quickly connect and disconnect the casing head from other related equipment when it is necessary to install, replace or repair the equipment, thereby reducing the efficiency of the operation.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multi-structure combined sleeve head device, comprising a sleeve head body, wherein a connecting mechanism is fixedly connected to the top of the sleeve head body, and a fixing mechanism is fixedly connected to the top of the connecting mechanism.

[0009] The connecting mechanism includes a connecting pipe, a fixing groove, a sliding groove, a snap-fit ​​plate, a pressure spring, a guide pipe, and an upper pressure block. The connecting pipe is fixedly connected to the top of the sleeve head body. The fixing groove is formed on the surface of the connecting pipe. The sliding groove is formed on both sides inside the fixing groove. The snap-fit ​​plate is slidably connected to the inside of the fixing groove. The pressure spring is fixedly connected to the bottom of the fixing groove. The top of the pressure spring is fixedly connected to the bottom of the snap-fit ​​plate. The guide pipe is slidably connected to the surface of the connecting pipe. The upper pressure block is fixedly connected to the bottom of the guide pipe and snaps into the inner side of the top of the snap-fit ​​plate.

[0010] Preferably, the fixing mechanism includes a lower limiting plate, an upper limiting plate, a left clamp, a right clamp, and a limiting groove, wherein the lower limiting plate is fixedly connected to the top of the guide tube surface.

[0011] Preferably, the upper limit plate is snapped onto the top of the lower limit plate, the left clamp is movably connected to the left side of the lower limit plate, and the right clamp is movably connected to the right side of the lower limit plate.

[0012] Preferably, the limiting grooves are respectively opened on the inner side of the left clamp and the right clamp, and the upper limiting plate and the lower limiting plate are movably connected to the inner side of the limiting grooves.

[0013] Preferably, protective sleeves are fixedly connected to the surfaces of the left and right clamps, and the surfaces of the protective sleeves are engraved with anti-slip textures.

[0014] Preferably, a protective pad is fixedly connected to the inner side of the limiting groove, and the surface of the protective pad is engraved with anti-slip texture.

[0015] Preferably, an anti-slip pad is fixedly connected to the inner side of the upper limit plate, and the surface of the anti-slip pad is engraved with anti-slip texture.

[0016] Preferably, a reinforcing ring is fixedly connected to the bottom of the fixing groove, and the surface of the reinforcing ring is coated with an anti-corrosion coating.

[0017] Preferably, connecting rods are fixedly connected to both sides of the snap-fit ​​plate, and a rotating wheel is fixedly connected to the side of the connecting rod away from the snap-fit ​​plate. The rotating wheel is rotatably connected to the inner side of the slide groove.

[0018] Preferably, the inner side of the snap-fit ​​plate is engraved with anti-slip texture, and the inner side of the snap-fit ​​plate is coated with anti-corrosion paint.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The casing head body of this application serves as the basic structure of the entire device, providing support and connection points for other components. This ensures the entire casing head device functions stably and reliably in oil and gas extraction environments, bearing pressure and various external forces from downhole. The connecting pipe connects the casing head body to other equipment, playing a crucial transitional role and ensuring tight and stable connections between different parts, facilitating smooth transmission of oil, gas, and other media. The fixing groove provides installation and movement space for the snap-fit ​​plate, allowing it to move up and down under specific conditions, achieving connection and fixation with other components. The sliding groove guides the movement of the snap-fit ​​plate, ensuring it maintains a stable direction during up and down movement, preventing deviation and improving connection accuracy and reliability. The snap-fit ​​plate, through snap-fit ​​engagement with other components, achieves rapid connection and fixation, improving connection efficiency and stability, while also withstanding certain pressure to ensure connection strength. The pressure spring provides upward elasticity to the snap-fit ​​plate, keeping it in a certain position when no external force is applied, facilitating rapid connection with other components. The upper and lower limit plates act as a buffer during the connection process, reducing the impact of impact on the device. The guide tube guides the upper pressure block to accurately act on the snap-fit ​​plate, ensuring the accuracy and stability of the connection operation, while also providing some protection for the internal components. The upper pressure block, by moving downwards and pressing the snap-fit ​​plate, achieves the locking function of the connection mechanism, ensuring the firmness of the connection and preventing loosening and leakage during use. The lower limit plate provides an installation and positioning reference for the upper limit plate, left clamp, and right clamp, ensuring that these components are accurately positioned during the fixing process, improving the stability and reliability of the fixing. The upper and lower limit plates cooperate to limit the connected components in the vertical direction, preventing the connection from loosening and displacement in the axial direction, ensuring the firmness of the connection. The left and right clamps fix the connection part by wrapping around it, increasing the stability and firmness of the connection, and can be quickly installed and disassembled as needed, improving work efficiency. The fixing groove provides installation space for the upper and lower limit plates, ensuring that the limit plates are accurately positioned during the fixing process, improving the fixing effect and stability.

[0021] 2. Compared with the existing multi-structure combined sleeve head device, this application achieves the effect of quickly connecting the sleeve head with other equipment through the cooperation of the connecting mechanism and the fixing mechanism. This improves the efficiency of the operation by quickly connecting and separating the sleeve head from other related equipment during the installation, replacement or maintenance of the equipment. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the multi-structure combined sleeve head device of this utility model;

[0023] Figure 2 This is an overall structural diagram of the connecting mechanism of this utility model;

[0024] Figure 3 This is an overall structural diagram of the fixing mechanism of this utility model;

[0025] Figure 4 This is a schematic diagram of the reinforcing ring of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the rotary wheel of this utility model.

[0027] In the diagram, 1. Sleeve head body; 2. Connecting mechanism; 21. Connecting pipe; 22. Fixing groove; 23. Sliding groove; 24. Snap-fit ​​plate; 25. Pressure spring; 26. Guide pipe; 27. Upper pressure block; 3. Fixing mechanism; 31. Lower limit plate; 32. Upper limit plate; 33. Left clamp; 34. Right clamp; 35. Limiting groove; 4. Protective sleeve; 5. Protective pad; 6. Anti-slip pad; 7. Reinforcing ring; 8. Connecting rod; 9. Rotary wheel. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-5 The present invention provides the following technical solution:

[0030] A multi-structure combined sleeve head device includes a sleeve head body 1, a connecting mechanism 2 fixedly connected to the top of the sleeve head body 1, and a fixing mechanism 3 fixedly connected to the top of the connecting mechanism 2.

[0031] The connecting mechanism 2 includes a connecting pipe 21, a fixing groove 22, a sliding groove 23, a snap-fit ​​plate 24, a pressure spring 25, a guide pipe 26, and an upper pressure block 27. The connecting pipe 21 is fixedly connected to the top of the sleeve head body 1. The fixing groove 22 is opened on the surface of the connecting pipe 21. The sliding groove 23 is opened on both sides inside the fixing groove 22. The snap-fit ​​plate 24 is slidably connected to the inside of the fixing groove 22. The pressure spring 25 is fixedly connected to the bottom of the fixing groove 22. The top of the pressure spring 25 is fixedly connected to the bottom of the snap-fit ​​plate 24. The guide pipe 26 is slidably connected to the surface of the connecting pipe 21. The upper pressure block 27 is fixedly connected to the bottom of the guide pipe 26 and snaps onto the inside of the top of the snap-fit ​​plate 24.

[0032] In this embodiment: By setting the casing head body 1 as the basic structure of the entire device, it provides support and connection points for other components, ensuring that the entire casing head device functions stably and reliably in oil and gas extraction and other operating environments, bearing the pressure and various external forces from downhole. The connecting pipe 21 connects the casing head body 1 with other equipment, playing a key transition role, ensuring a tight and stable connection between different parts, and realizing the smooth transmission of media such as oil and gas. The fixing groove 22 provides installation and movement space for the snap-fit ​​plate 24, allowing the snap-fit ​​plate 24 to move up and down under certain conditions, realizing the connection and fixing functions with other components. The sliding groove 23 provides guidance for the movement of the snap-fit ​​plate 24, ensuring that the snap-fit ​​plate 24 maintains a stable direction during up and down movement, avoiding deviation and improving the accuracy of the connection. For safety and reliability, the snap-fit ​​plate 24 achieves quick connection and fixation through snap-fit ​​with other components, improving connection efficiency and stability. It can also withstand certain pressure, ensuring a secure connection. The pressure spring 25 provides upward elasticity to the snap-fit ​​plate 24, keeping it in a certain position when no external force is applied, facilitating quick connection with other components. It also acts as a buffer during connection, reducing the impact of impact on the device. The guide tube 26 guides the upper pressure block 27 to accurately act on the snap-fit ​​plate 24, ensuring the accuracy and stability of the connection operation, while also providing some protection for internal components. The upper pressure block 27, by moving downwards and pressing the snap-fit ​​plate 24, achieves the locking function of the connection mechanism 2, ensuring a secure connection and preventing loosening and leakage during use.

[0033] Specifically, such as Figure 3 As shown, the fixing mechanism 3 includes a lower limit plate 31, an upper limit plate 32, a left clamp 33, a right clamp 34 and a limiting groove 35. The lower limit plate 31 is fixedly connected to the top of the surface of the guide tube 26.

[0034] Specifically, such as Figure 3 As shown, the upper limit plate 32 is snapped onto the top of the lower limit plate 31, the left clamp 33 is movably connected to the left side of the lower limit plate 31, and the right clamp 34 is movably connected to the right side of the lower limit plate 31.

[0035] Specifically, such as Figure 3 As shown, the limiting grooves 35 are respectively opened on the inner side of the left clamp 33 and the right clamp 34, and the upper limiting plate 32 and the lower limiting plate 31 are movably connected to the inner side of the limiting grooves 35.

[0036] In this embodiment: the lower limit plate 31 provides an installation and positioning reference for the upper limit plate 32, left clamp 33, and right clamp 34, ensuring accurate positioning of these components during the fixing process and improving the stability and reliability of the fixing. The upper limit plate 32 cooperates with the lower limit plate 31 to limit the connected components in the vertical direction, preventing loosening and displacement of the connected parts in the axial direction and ensuring the firmness of the connection. The left clamp 33 and right clamp 34 fix the connected parts in a circumferential manner, increasing the stability and firmness of the connection. At the same time, they can be quickly installed and disassembled as needed, improving work efficiency. The limiting groove 35 provides installation space for the upper limit plate 32 and lower limit plate 31, ensuring accurate positioning of the limit plates during the fixing process and improving the fixing effect and stability.

[0037] Specifically, such as Figure 3 As shown, protective sleeves 4 are fixedly connected to the surfaces of the left clamp 33 and the right clamp 34 respectively, and the surface of the protective sleeves 4 is engraved with anti-slip texture.

[0038] Specifically, such as Figure 3 As shown, a protective pad 5 is fixedly connected to the inner side of the limiting groove 35, and the surface of the protective pad 5 is engraved with anti-slip texture.

[0039] In this embodiment: by setting a protective sleeve 4, the left clamp 33 and the right clamp 34 are protected to prevent them from being damaged by external forces during use. By setting anti-slip texture, the friction during operation is increased, making it convenient for operators to install and disassemble. By setting a protective pad 5, installed inside the limiting groove 35, it plays a buffering and protective role. By setting anti-slip texture, the friction and wear between the connecting parts are reduced, and the service life of the device is extended.

[0040] Specifically, such as Figure 3 As shown, an anti-slip pad 6 is fixedly connected to the inner side of the upper limit plate 32, and the surface of the anti-slip pad 6 is engraved with anti-slip texture.

[0041] Specifically, such as Figure 4 As shown, a reinforcing ring 7 is fixedly connected to the bottom of the limiting groove 35, and the surface of the reinforcing ring 7 is coated with an anti-corrosion coating.

[0042] In this embodiment: by setting the anti-slip pad 6, the friction between the upper limit plate 32 and the connecting parts is increased, preventing slippage and displacement during use. By setting the anti-slip texture, the stability and reliability of the fixation are improved. By setting the reinforcing ring 7, the strength of the bottom of the limiting groove 35 is enhanced, preventing deformation and damage under pressure, thus improving the overall stability and reliability of the connecting mechanism 2. By setting the anti-corrosion coating, the reinforcing ring 7 can be prevented from corroding and rusting after long-term use.

[0043] Specifically, such as Figure 5 As shown, connecting rods 8 are fixedly connected to both sides of the snap-fit ​​plate 24, and a rotating wheel 9 is fixedly connected to the side of the connecting rod 8 away from the snap-fit ​​plate 24. The rotating wheel 9 is rotatably connected to the inner side of the slide groove 23.

[0044] Specifically, such as Figure 5 As shown, the inner side of the snap-fit ​​plate 24 is engraved with anti-slip texture and coated with anti-corrosion paint.

[0045] In this embodiment: by setting the connecting rod 8, the snap-fit ​​plate 24 and the rotating wheel 9 can be connected. By setting the rotating wheel 9, it can rotate in the slide groove 23, reducing the friction when the snap-fit ​​plate 24 moves, making the movement of the snap-fit ​​plate 24 smoother, and improving the efficiency and accuracy of the connection operation. By setting the anti-slip texture, the friction between the snap-fit ​​plate 24 and the connecting parts is increased, improving the firmness of the connection. By setting the anti-corrosion coating, the snap-fit ​​plate 24 can be prevented from being corroded in harsh working environments, extending its service life.

[0046] Working principle: First, the casing head body 1 is installed at the appropriate position in the oil and gas extraction operation. When it is necessary to connect other equipment, the operator first aligns the equipment to be connected with the guide pipe 26 to ensure that the equipment is connected in place. Then, force is applied to the guide pipe 26 to make it slide downward on the surface of the connecting pipe 21. As the guide pipe 26 moves downward, the upper pressure block 27 at the bottom of the guide pipe 26 gradually approaches the snap-fit ​​plate 24. When the two contact and the upper pressure block 27 continues to move downward, it will squeeze the snap-fit ​​plate 24, causing the snap-fit ​​plate 24 to overcome the elastic force of the pressure spring 25 and slide downward inside the fixing groove 22. After that, the lower limit plate 31 moves downward with the guide pipe 26 to a position flush with the connecting pipe 21. At this time, the user connects the upper limit plate 32 with the guide pipe 26. The lower limit plate 31 is snapped in place. After snapping, the limiting grooves 35 on the inner sides of the left clamp 33 and the right clamp 34 are aligned with the sides of the upper limit plate 32 and the lower limit plate 31 to fix the upper limit plate 32 and the lower limit plate 31, thereby fixing and limiting the connected equipment. Finally, if it is necessary to adjust or replace the connected equipment during the use of the device, the left clamp 33 and the right clamp 34, as well as the upper limit plate 32 and the lower limit plate 31, can be operated to separate the upper limit plate 32 and the lower limit plate 31. The guide tube 26 moves upward, causing the upper pressure block 27 to disengage from the snap-fit ​​plate 24. The pressure spring 25 drives the snap-fit ​​plate 24 to move upward, thereby achieving quick installation and disassembly and greatly improving work efficiency.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-structure combined sleeve head device, comprising a sleeve head body (1), characterized in that: The top of the sleeve head body (1) is fixedly connected to a connecting mechanism (2), and the top of the connecting mechanism (2) is fixedly connected to a fixing mechanism (3). The connecting mechanism (2) includes a connecting pipe (21), a fixing groove (22), a sliding groove (23), a snap-fit ​​plate (24), a pressure spring (25), a guide pipe (26), and an upper pressure block (27). The connecting pipe (21) is fixedly connected to the top of the sleeve head body (1). The fixing groove (22) is opened on the surface of the connecting pipe (21). The sliding groove (23) is opened on both sides inside the fixing groove (22). The snap-fit ​​plate (24) is slidably connected to the inside of the fixing groove (22). The pressure spring (25) is fixedly connected to the bottom of the fixing groove (22). The top of the pressure spring (25) is fixedly connected to the bottom of the snap-fit ​​plate (24). The guide pipe (26) is slidably connected to the surface of the connecting pipe (21). The upper pressure block (27) is fixedly connected to the bottom of the guide pipe (26). The upper pressure block (27) is snapped into the inside of the top of the snap-fit ​​plate (24).

2. The multi-structure combined sleeve head device according to claim 1, characterized in that: The fixing mechanism (3) includes a lower limit plate (31), an upper limit plate (32), a left clamp (33), a right clamp (34), and a limiting groove (35). The lower limit plate (31) is fixedly connected to the top of the surface of the guide tube (26).

3. The multi-structure combined sleeve head device according to claim 2, characterized in that: The upper limit plate (32) is snapped onto the top of the lower limit plate (31), the left clamp (33) is movably connected to the left side of the lower limit plate (31), and the right clamp (34) is movably connected to the right side of the lower limit plate (31).

4. The multi-structure combined sleeve head device according to claim 3, characterized in that: The limiting grooves (35) are respectively opened on the inner side of the left clamp (33) and the right clamp (34), and the upper limiting plate (32) and the lower limiting plate (31) are movably connected to the inner side of the limiting grooves (35).

5. The multi-structure combined sleeve head device according to claim 4, characterized in that: The left clamp (33) and the right clamp (34) are respectively fixedly connected with protective sleeves (4), and the surface of the protective sleeves (4) is engraved with anti-slip texture.

6. The multi-structure combined sleeve head device according to claim 5, characterized in that: A protective pad (5) is fixedly connected to the inner side of the limiting groove (35), and the surface of the protective pad (5) is engraved with anti-slip texture.

7. The multi-structure combined sleeve head device according to claim 6, characterized in that: An anti-slip pad (6) is fixedly connected to the inner side of the upper limit plate (32), and the surface of the anti-slip pad (6) is engraved with anti-slip texture.

8. The multi-structure combined sleeve head device according to claim 1, characterized in that: A reinforcing ring (7) is fixedly connected to the bottom of the fixing groove (22), and the surface of the reinforcing ring (7) is coated with an anti-corrosion coating.

9. The multi-structure combined sleeve head device according to claim 1, characterized in that: Connecting rods (8) are fixedly connected to both sides of the snap-fit ​​plate (24). A rotating wheel (9) is fixedly connected to the side of the connecting rod (8) away from the snap-fit ​​plate (24). The rotating wheel (9) is rotatably connected to the inside of the slide groove (23).

10. A multi-structure combined sleeve head device according to claim 1, characterized in that: The inner side of the snap-fit ​​plate (24) is engraved with anti-slip texture, and the inner side of the snap-fit ​​plate (24) is coated with anti-corrosion paint.

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