Fracturing wellhead device convenient to disassemble and assemble

Abstract

The invention relates to the technical field of fracturing well mouths, in particular to a fracturing well mouth device convenient to disassemble and assemble, which comprises a fracturing well mouth body, an oil inlet pipe fixedly penetrates through the bottom of the fracturing well mouth body, an oil conveying pipe corresponding to the oil inlet pipe is arranged below the oil inlet pipe, and a first butt joint table fixedly sleeves the pipe mouth end, opposite to the oil conveying pipe, of the oil inlet pipe; the end, opposite to the oil inlet pipe, of the oil conveying pipe is fixedly sleeved with a second butt joint table, the first butt joint table and the second butt joint table are vertically connected with the same pair of first U-shaped insertion rods in an inserted mode, the two first U-shaped insertion rods are horizontally inserted with the same second U-shaped insertion rod, the second U-shaped insertion rod is arranged below the second butt joint table, and the second butt joint table is provided with an elastic structure facilitating elastic pulling of the second U-shaped insertion rod. A first U-shaped inserting rod and a second U-shaped inserting rod are arranged. According to the device, the fracturing wellhead device can be quickly disassembled, tedious steps in the traditional disassembly and assembly process are simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fracturing wellheads, and in particular to a fracturing wellhead device which is easy to assemble and disassemble. Background Art

[0002] Wellhead equipment, composed of materials such as pipe heads and blowout preventer groups, controls the pressure and direction of gas and liquid fluids, including Christmas trees and gas trees. They are installed at the wellhead in oil and natural gas drilling to hang casing and tubing, and seal the annular space between tubing and casing and each layer of casing. They are generally composed of casing heads, tubing heads, and blowout preventer groups. In the process of oil well exploitation, it is often necessary to disassemble and assemble the wellhead equipment.

[0003] In the process of disassembling and assembling many wellhead devices, various tools are commonly used to tighten or loosen the fixed bolts and nuts. However, the need to frequently go through the process of disassembly and reassembly not only increases the time cost required for each operation, but also reduces work efficiency. Long-term repetitive labor not only tests the patience and technical proficiency of workers, but may also lead to safety accidents due to overwork. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a fracturing wellhead device which is easy to disassemble and assemble.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A fracturing wellhead device that is easy to disassemble and assemble comprises a fracturing wellhead body, an oil inlet pipe is fixedly installed through the bottom of the fracturing wellhead body, an oil delivery pipe corresponding to the oil inlet pipe is arranged below the oil inlet pipe, a docking platform 1 is fixedly sleeved on the pipe mouth end of the oil inlet pipe relative to the oil delivery pipe, and a docking platform 2 is fixedly sleeved on one end of the oil delivery pipe relative to the oil inlet pipe, a pair of U-shaped plug rods 1 are vertically inserted on the docking platform 1 and the docking platform 2, the two U-shaped plug rods 1 are horizontally inserted with the same U-shaped plug rod 2, and the U-shaped plug rod 2 is arranged below the docking platform 2; an elastic structure is arranged on the docking platform 2 for facilitating elastic pulling of the U-shaped plug rod 2, and the U-shaped plug rod 1 and the The two U-shaped insertion rods are each provided with a drawing groove, and the elastic structure includes a fixing seat arranged on the bottom surface of the second docking platform, and a disassembly plate is arranged on the concave side surface of the second U-shaped insertion rod, and the fixing seat and the disassembly plate are fixedly connected with the same telescopic rod on the opposite side walls, and a spring is sleeved on the telescopic rod, and the two ends of the spring are respectively fixedly connected to the fixing seat and the disassembly plate, and a connecting ear is fixedly connected to the fixing seat, and the connecting ear and the second docking platform are threadedly connected with the same fastening bolt one, and the disassembly plate and the second U-shaped insertion rod are threadedly connected with the same fastening bolt two, and a plurality of screw grooves are arranged on the bottom surface of the second docking platform, and the screw grooves and the fastening bolt one are correspondingly arranged.

[0006] In order to better achieve the above purpose, the present invention adopts a further technical solution: the connecting ear is arranged on the side wall of the fixing base away from the telescopic rod, and the top surface of the connecting ear is in contact with the second bottom surface of the docking platform.

[0007] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: both the docking platform 1 and the docking platform 2 are provided with a socket 1 for facilitating the vertical plugging of the U-shaped plug-in rod 1, and the U-shaped plug-in rod 1 is provided with a socket 2 for facilitating the horizontal plugging of the U-shaped plug-in rod 2.

[0008] In order to better achieve the above purpose, the present invention adopts a further technical solution: the oil delivery pipe and the second docking station form a sealed cavity, the oil inlet pipe and the sealed cavity are adapted, and the outer diameter of the oil inlet pipe is the same as the inner diameter of the sealed cavity.

[0009] The beneficial effect of the present invention is that the spring is stretched by pulling the U-shaped plug rod 2 in the horizontal direction, and the telescopic rod is stretched at the same time, so that the U-shaped plug rod 2 is smoothly disengaged from the second insertion hole, and then the U-shaped plug rod 1 is taken out vertically upward, so that the fracturing wellhead device can be quickly disassembled, which simplifies the cumbersome steps in the traditional disassembly and assembly process and improves work efficiency.

[0010] At the same time, in the subsequent use process, when the spring needs to be replaced or maintained, it is only necessary to screw the fastening bolts one and two to easily replace the telescopic rod and the spring together. This not only ensures the elasticity of the spring and ensures that it can maintain a good working condition during long-term use, but also ensures the stability of the U-shaped plug-in rod two and the tightness of the U-shaped plug-in rod one. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of a fracturing wellhead device that is easy to disassemble and assemble proposed by the present invention; Figure 2 A schematic diagram of a screw groove in a fracturing wellhead device that is easy to disassemble and assemble proposed by the present invention; Figure 3 for Figure 2 The enlarged view of point A in the middle; Figure 4 A schematic diagram of a U-shaped plug rod in a fracturing wellhead device that is easy to disassemble and assemble proposed by the present invention, after being separated relative to a docking platform; Figure 5 This is a cross-sectional view of an oil inlet pipe in a fracturing wellhead device that is easy to disassemble and assemble proposed by the present invention.

[0012] In the figure: 1. Fracturing wellhead body; 2. Oil inlet pipe; 3. Oil delivery pipe; 4. Docking station 1; 5. Docking station 2; 6. U-shaped plug rod 1; 7. U-shaped plug rod 2; 8. Groove; 9. Fixed seat; 10. Disassembly and assembly plate; 11. Telescopic rod; 12. Spring; 13. Connecting ear; 14. Fastening bolt 1; 15. Fastening bolt 2; 16. Screw groove; 17. Socket 1; 18. Socket 2; 19. Sealing chamber. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely 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, rather than all the embodiments.

[0014] Reference Figure 1 - Figure 5 As shown, a fracturing wellhead device that is easy to disassemble and assemble includes a fracturing wellhead body 1. The fracturing wellhead body 1 is made of corrosion-resistant and wear-resistant high-strength alloy steel and can withstand extreme working conditions. At the same time, its modular design facilitates maintenance and replacement, reduces downtime, and improves production efficiency. An oil inlet pipe 2 is fixedly installed at the bottom of the fracturing wellhead body 1. The oil inlet pipe 2 is located at the bottom of the fracturing wellhead body and is directly fixed on the wellhead. An oil pipeline 3 corresponding to the oil inlet pipe 2 is arranged below the oil inlet pipe 2. A docking platform 1 4 is fixedly provided at the pipe mouth end of the oil inlet pipe 2 relative to the oil pipeline 3. A docking platform 2 5 is fixedly provided at one end of the oil pipeline 3 relative to the oil inlet pipe 2. By setting the docking platform 1 4 and the docking platform 2 5, the precise connection between the oil inlet pipe 2 and the oil pipeline 3 is ensured, and the risk of leakage caused by misalignment is reduced. Through the function of these two platforms, seamless connection between pipelines can be achieved.

[0015] The same pair of U-shaped plug rods 1 6 are vertically inserted on docking platform 1 4 and docking platform 2 5, and the same U-shaped plug rod 2 7 is horizontally inserted into the two U-shaped plug rods 1 6, and the U-shaped plug rod 2 7 is arranged below docking platform 2 5; the U-shaped plug rod system allows the entire assembly to be easily assembled or disassembled without using any tools, thereby improving work efficiency. By rationally arranging the positions of these plug rods, displacement between the oil inlet pipe 2 and the oil delivery pipe 3 can also be effectively prevented. Specifically, the two vertically inserted U-shaped plug rods 1 6 are arranged to prevent the oil inlet pipe 2 and the oil delivery pipe 3 from shifting in the horizontal direction, and the horizontally inserted U-shaped plug rod 2 7 prevents the U-shaped plug rod 1 6 from shifting up and down and shaking.

[0016] The docking station 25 is provided with an elastic structure for elastically pulling the U-shaped plug rod 27. The elastic structure system is designed to provide the operator with a convenient and efficient operation experience, so that the U-shaped plug rod 27 can be easily and accurately controlled. It ensures that the U-shaped plug rod 27 can achieve a smooth and unobstructed moving trajectory during the pulling process, and completely eliminates the possibility of jamming or deviating from the predetermined track. At the same time, the elastic structure can ensure smooth operation and achieve the best use effect, whether for users with limited strength or those who pursue the ultimate fine adjustment.

[0017] The U-shaped plug rod 1 6 and the U-shaped plug rod 2 7 are both provided with grooves 8. The ingenious layout of these grooves 8 not only greatly improves the convenience of operation, but also fully considers the comfort of the user during use. Through this design, the user can easily complete the insertion or removal of the plug rod by simply operating it with his fingers. The whole process does not require any additional tools, which saves time and effort, and fully demonstrates the humanized care of the design.

[0018] The elastic structure includes a fixed seat 9 arranged on the bottom surface of the docking station 2 5, a disassembly plate 10 is arranged on the concave side of the U-shaped plug rod 2 7, and the same telescopic rod 11 is fixedly connected to the opposite side walls of the fixed seat 9 and the disassembly plate 10, and a spring 12 is sleeved on the telescopic rod 11, and the spring 12 is arranged to provide the necessary resilience. And the two ends of the spring 12 are fixedly connected to the fixed seat 9 and the disassembly plate 10 respectively. When it is necessary to adjust or remove the U-shaped plug rod 1 6 and the U-shaped plug rod 2 7, just gently pull the disassembly plate 10 to overcome the resistance of the spring 12, so that the telescopic rod 11 stretches along its axial direction, thereby changing the position of the U-shaped plug rod 2 17. This design not only simplifies the operation process, but also effectively prevents the safety hazards caused by misoperation. In terms of material selection, all key parts are preferably but not limited to being made of high-quality stainless steel. This material not only has excellent mechanical strength and durability, can withstand high-intensity workloads in long-term use, but also has excellent corrosion resistance. Whether in humid environments, high temperatures or exposed to a variety of chemicals, these stainless steel parts will remain in good condition and avoid rust and corrosion.

[0019] A connecting ear 13 is fixedly connected to the fixing seat 9, and the connecting ear 13 and the docking platform 25 are threadedly connected with the same fastening bolt 14, and the disassembly plate 10 and the U-shaped plug rod 27 are threadedly connected with the same fastening bolt 15. A plurality of screw grooves 16 are provided on the bottom surface of the docking platform 25, and the screw grooves 16 and the fastening bolt 14 are correspondingly arranged. Through the arrangement of the plurality of screw grooves 16, after selecting the appropriate telescopic rod 11 and spring 12, the staff can flexibly move the fixing seat 9 and the connecting ear 13 together, and after the connecting ear 13 is moved to a suitable position, the fastening bolt 14 is screwed to fix the connecting ear 13, and at the same time, the disassembly plate 10 is fixed relative to the U-shaped plug rod 27 by screwing the fastening bolt 15. This arrangement facilitates the subsequent staff to disassemble, maintain and service the telescopic rod 11, spring 12 and other components as a whole, thereby extending the overall service life and flexibility of use of the device.

[0020] The connecting ear 16 is arranged on the side wall of the fixing seat 9 away from the telescopic rod 11, and the top surface of the connecting ear 13 contacts the bottom surface of the docking platform 2 5. The purpose of the contact is to facilitate the stable installation of the fastening bolt 14. This design not only ensures the precise alignment between the two, but also provides a stable and reliable installation foundation for the fastening bolt 14, effectively preventing loosening due to vibration or external force, thereby enhancing the stability and safety of the entire structure.

[0021] The docking platform 14 and the docking platform 25 are both provided with a socket 17 for the U-shaped plug rod 16 to be plugged in vertically, and the U-shaped plug rod 16 is provided with a socket 2 18 for the U-shaped plug rod 27 to be plugged in horizontally. Considering the convenience in actual operation, all plug points can be processed with smooth transition according to actual needs to avoid possible harm to the human body caused by sharp corners. At the same time, the reasonable size ratio also allows even first-time users to quickly get started and complete the installation task without additional training.

[0022] The oil pipeline 3 and the docking station 2 5 form a sealed cavity 19, the oil inlet pipe 2 and the sealed cavity 19 are adapted, and the outer diameter of the oil inlet pipe 2 is the same as the inner diameter of the sealed cavity 19. This arrangement ensures a good sealing effect between the oil inlet pipe 2 and the oil pipeline 3. The oil inlet pipe 2 is vertically inserted into the sealed cavity 19, thereby effectively preventing oil from leaking from the oil inlet pipe 2 and the oil pipeline 3, ensuring the sealing during mining. The oil inlet pipe 2 can be inserted into it to form a tight fit. This structure helps prevent oil leakage and ensures safety and environmental protection during mining.

[0023] Installation process and preparation stage of the present invention: Before installing the fracturing wellhead device, firstly, all parts need to be fully inspected to ensure that they are in an intact state. At the same time, it is confirmed that all necessary tools (such as fastening bolts) are complete and available, which is the basis for ensuring a smooth installation.

[0024] Next, the oil inlet pipe 2 is accurately fixed to the bottom of the fracturing wellhead body 1. This step is crucial because it directly affects the accuracy and sealing of the subsequent pipeline connection. At the same time, the docking platform 2 5 is correctly installed above the oil pipeline 3 to lay a good foundation for the next step of operation.

[0025] Preliminary alignment: Using the precise matching relationship between docking station 1 4 and docking station 2 5, carefully adjust the positions of the oil inlet pipe 2 and the oil delivery pipe 3 so that they can achieve the best possible alignment. The purpose of this is to minimize the potential risk of leakage caused by misalignment, thereby improving the sealing performance of the entire system. After completing the rough alignment, then insert two vertical U-shaped rods 1 6 into the corresponding positions, which helps to further stabilize the connection between the two sections of the pipeline.

[0026] Locking mechanism activated: Then comes the critical step: insert the U-shaped rod 2 7 horizontally through the two holes 18 on the two U-shaped rods 1 6 that are already in place. After this process is completed, the entire pipe system will be firmly locked together, effectively preventing any accidental movement or loosening. This design not only enhances structural stability, but also simplifies the operation process, allowing on-site workers to complete tasks more easily and quickly.

[0027] Adjusting the sealing: The last step is to carefully check and properly adjust the sealing condition between the oil inlet pipe 2 and the oil delivery pipe 3. Since the two have the same outer diameter and fit tightly in the sealing cavity 19, a good sealing effect can be formed, thereby effectively avoiding the problem of oil leakage. In this way, the safety of the mining process is guaranteed and environmental protection requirements are met.

[0028] Replacement of parts or regular maintenance: When parts replacement or regular maintenance is required, the whole process is also simple and easy. First, loosen the fastening bolt 14 and the fastening bolt 2 15, and then carefully remove the telescopic rod 11 and the spring 12 inside it for necessary replacement or cleaning; then the U-shaped plug rod 2 7 can be easily removed from the horizontal direction, and then the two U-shaped plug rods 1 6 in the vertical direction can be removed in turn, finally achieving the safe separation of the oil inlet pipe 2 and the oil delivery pipe 3.

[0029] It is worth noting that no complicated tools are required during the entire disassembly process, which greatly facilitates the operation of on-site workers. In addition, thanks to the humanized design considerations, even people who are new to the device can quickly master the correct usage method, greatly reducing the learning cost.

[0030] In short, this new type of fracturing wellhead device, with its innovative design ideas and technical advantages, has significantly improved work efficiency while ensuring safe production, and has become one of the indispensable and important equipment in the modern oil industry. Whether in terms of installation convenience or maintenance convenience, it has demonstrated excellent performance and provided users with an efficient and reliable solution.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fracturing wellhead device that is easy to disassemble and assemble, comprising a fracturing wellhead body (1), an oil inlet pipe (2) being fixedly installed through the bottom of the fracturing wellhead body (1), and an oil delivery pipe (3) corresponding to the oil inlet pipe (2) being arranged below the oil inlet pipe (2), characterized in that: The oil inlet pipe (2) is fixedly sleeved with a docking platform (4) at the pipe mouth end relative to the oil delivery pipe (3), and the oil delivery pipe (3) is fixedly sleeved with a docking platform (5) at one end relative to the oil inlet pipe (2). The docking platform (4) and the docking platform (5) are vertically plugged with the same pair of U-shaped insertion rods (6), and the two U-shaped insertion rods (6) are horizontally inserted with the same U-shaped insertion rods (7), and the U-shaped insertion rods (7) are arranged below the docking platform (5); the docking platform (5) is provided with an elastic structure for elastically pulling the U-shaped insertion rods (7), and the U-shaped insertion rods (6) and (7) are both provided with drawing grooves (8), and the elastic structure includes a fixed seat (9) arranged on the bottom surface of the docking platform (5), and the U-shaped insertion rods (6) and (7) are horizontally inserted with the same U-shaped insertion rods (7). A disassembly plate (10) is provided on the concave side surface of the second insertion rod (7); the fixed seat (9) and the disassembly plate (10) are fixedly connected to the same telescopic rod (11) on the opposite side walls; a spring (12) is sleeved on the telescopic rod (11), and the two ends of the spring (12) are respectively fixedly connected to the fixed seat (9) and the disassembly plate (10); a connecting ear (13) is fixedly connected to the fixed seat (9); the connecting ear (13) and the second docking platform (5) are threadedly connected to the same fastening bolt (14); the disassembly plate (10) and the second U-shaped insertion rod (7) are threadedly connected to the same fastening bolt (15); a plurality of screw grooves (16) are provided on the bottom surface of the second docking platform (5); the screw grooves (16) and the fastening bolt (14) are correspondingly arranged.

2. The fracturing wellhead device that is easy to disassemble and assemble according to claim 1, characterized in that: The connecting ear (16) is arranged on a side wall of the fixing seat (9) away from the telescopic rod (11), and the top surface of the connecting ear (13) is in contact with the bottom surface of the second docking station (5).

3. The fracturing wellhead device that is easy to disassemble and assemble according to claim 1, characterized in that: The first docking platform (4) and the second docking platform (5) are both provided with a first plug hole (17) for facilitating the vertical plugging of the first U-shaped plug rod (6), and the first U-shaped plug rod (6) is provided with a second plug hole (18) for facilitating the horizontal plugging of the second U-shaped plug rod (7).

4. The fracturing wellhead device that is easy to disassemble and assemble according to claim 1, characterized in that: The oil delivery pipe (3) and the second docking station (5) form a sealed cavity (19), the oil inlet pipe (2) and the sealed cavity (19) are matched, and the outer diameter of the oil inlet pipe (2) is the same as the inner diameter of the sealed cavity (19).

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