Wellhead protector for oil-gas field development

Abstract

The utility model relates to the technical field of oil-gas field development, and discloses a wellhead protector for oil-gas field development, which comprises a shell, a mounting plate is fixedly connected to the right side outside the shell, a connecting pipe is fixedly connected to the right side outside the mounting plate, and an opening and closing mechanism is fixedly connected to the right side outside the mounting plate. Sealing mechanisms are fixedly connected to the left side and the right side of the interior of the shell; and the opening and closing mechanism comprises an extension plate, the top of the extension plate is fixedly connected with a mounting frame, the interior of the mounting frame is fixedly connected with a motor, and the driving end of the motor is fixedly connected with an eccentric wheel. According to the sealing device, by starting the motor, the motor can drive the eccentric wheel to rotate, the eccentric wheel drives the rotating plate to rotate through the connecting shaft, the rotating plate drives the sliding plate to slide in the sealing gasket, and the sliding plate can drive the sealing plate to slide in the shell; therefore, the opening and closing of the protector can be realized.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas field development technology, and in particular to a wellhead protector for oil and gas field development. Background Technology

[0002] During normal oil and gas well production, wellhead protectors are installed around the wellhead equipment. They prevent external impurities, such as dust and sand, from entering the wellhead equipment. These impurities can cause wear and tear on wellhead valves, fittings, and other equipment, affecting their sealing and normal operation. For example, in desert oil and gas fields with strong winds and sandstorms, wellhead protectors effectively block sand and dust, ensuring the cleanliness of the wellhead equipment and extending its service life.

[0003] In the prior art, some wellhead protectors achieve opening and closing by installing a hinge structure on one side, just like a door is connected to a door frame by a hinge. One side of the wellhead protector is connected to the fixed part by a high-strength metal hinge, which is usually made of alloy steel and has sufficient strength to withstand the weight of the protector itself and the external forces it is subjected to.

[0004] However, in practical use, if the wellhead protector cannot be opened or closed, it is difficult for workers to access the wellhead equipment when routine inspections (such as checking the working status of valves and the accuracy of instrument readings) or maintenance (such as replacing damaged pipe fittings and repairing seals) are required. This greatly increases the difficulty of maintenance and inspection, prolongs maintenance time, and leads to extended downtime in oil and gas production, resulting in economic losses. Therefore, to address the above-mentioned problems, a wellhead protector for oil and gas field development is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a wellhead protector for oil and gas field development, aiming to improve the problem that some existing devices cannot open and close the protector.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wellhead protector for oil and gas field development includes a housing, an installation plate fixedly connected to the outer right side of the housing, a connecting pipe fixedly connected to the outer right side of the installation plate, an opening and closing mechanism fixedly connected to the outer right side of the installation plate, and sealing mechanisms fixedly connected to both the left and right sides of the interior of the housing.

[0008] The opening and closing mechanism includes an extension plate, a mounting bracket fixedly connected to the top of the extension plate, a motor fixedly connected inside the mounting bracket, an eccentric wheel fixedly connected to the drive end of the motor, a connecting shaft fixedly connected to the top of the eccentric wheel, a rotating plate rotatably connected to the outside of the connecting shaft, a sliding plate rotatably connected to the other end of the rotating plate, a leak-proof component fixedly connected inside the connecting pipe, a sealing plate fixedly connected to the left outer side of the sliding plate, and the right outer side of the extension plate fixedly connected to the right outer side of the mounting plate.

[0009] As a further description of the above technical solution:

[0010] The leak-proof assembly includes a sealing gasket, the outside of which is fixedly connected to the inside of the connecting pipe, and the outside of which is slidably connected to the inside of the sealing gasket.

[0011] As a further description of the above technical solution:

[0012] The sealing mechanism includes a fixing plate, a fixing rod slidably connected inside the fixing plate, a spring sleeved on the outside of the fixing rod, a limit plate fixedly connected to the bottom of the fixing rod, a rubber ring fixedly connected to the other end of the fixing plate, and the outside of the fixing plate fixedly connected to the left and right sides inside the housing.

[0013] As a further description of the above technical solution:

[0014] A pipe is fixedly connected to the top of the housing, and a flange is fixedly connected to the top of the pipe;

[0015] As a further description of the above technical solution:

[0016] An installation plate is fixedly connected to the bottom of the housing, and an oil well body is fixedly connected to the bottom of the installation plate.

[0017] As a further description of the above technical solution:

[0018] The mounting plate is detachably connected to the outside of the oil well body by bolts, and the bolts are threaded to the inside of the mounting plate and the oil well body respectively, and are evenly distributed.

[0019] As a further description of the above technical solution:

[0020] The outer side of the sliding plate is slidably connected to the inside of the sealing gasket, and the outer side of the sliding plate is slidably connected to the inside of the connecting tube;

[0021] As a further description of the above technical solution:

[0022] One end of the spring is fixedly connected to the outside of the limiting plate, and the other end of the spring is fixedly connected to the outside of the fixing plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by starting the motor, the motor can drive the eccentric wheel to rotate, and the eccentric wheel drives the rotating plate to rotate through the connecting shaft. The rotating plate drives the sliding plate to slide inside the sealing gasket, and the sliding plate can drive the sealing plate to slide inside the housing. This enables the opening and closing of the protector, allowing technicians to directly access the wellhead device and facilitate daily maintenance of valves, pipelines, instruments and other equipment at the wellhead.

[0025] 2. In this utility model, the sealing plate will contact the limiting plate, which will then allow the limiting plate to drive the fixing rod to slide outside the fixing plate. This will cause the spring outside the fixing rod to deform, which will allow the rubber ring to securely seal the inside of the shell. A wellhead protector with a good seal can reduce the emission of harmful substances in oil and gas to the outside. For soil, it can prevent oil and gas infiltration and avoid damage to soil structure and death of vegetation. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a wellhead protector for oil and gas field development proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the rubber ring of a wellhead protector for oil and gas field development proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the mounting plate of a wellhead protector for oil and gas field development proposed in this utility model.

[0030] Legend:

[0031] 1. Housing; 2. Mounting plate; 3. Connecting pipe; 4. Extension plate; 5. Mounting bracket; 6. Motor; 7. Eccentric wheel; 8. Connecting shaft; 9. Rotating plate; 10. Sliding plate; 11. Sealing gasket; 12. Sealing plate; 13. Pipe; 14. Flange; 15. Fixing plate; 16. Fixing rod; 17. Spring; 18. Limiting plate; 19. Rubber ring; 20. Mounting disc; 21. Oil well body; 22. Bolt. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1 to 3 This utility model provides an embodiment of a wellhead protector for oil and gas field development, comprising a shell 1. The shell 1 serves as the core protective outer shell of the entire wellhead protector, and its material is typically a high-strength, corrosion-resistant metal material, such as carbon steel. The carbon steel shell 1 has high strength and rigidity, and can withstand internal oil and gas pressure, external environmental impact, and other external forces, ensuring the safe and stable operation of internal components. Its cost is relatively low, and it is widely used in some oil and gas field development projects with strict cost control and relatively good environmental conditions. An mounting plate 2 is fixedly connected to the right side of the shell 1. The mounting plate 2 serves as an important bridge connecting the shell 1 and the connecting pipe 3, and its material is generally a metal material that matches the shell 1, such as carbon steel or stainless steel. A connecting pipe 3 is fixedly connected to the outer right side of the mounting plate 2. The wall thickness of the connecting pipe 3 is determined according to the pressure it bears, generally between a few millimeters and a dozen millimeters. Both ends of the connecting pipe 3 are equipped with connecting flanges or threaded interfaces for connection with other pipes or equipment. An opening and closing mechanism is fixedly connected to the outer right side of the mounting plate 2. The opening and closing mechanism can control the opening and closing of the housing 1, realizing precise control and adjustment of oil and gas transportation. Sealing mechanisms are fixedly connected to both the left and right sides of the inside of the housing 1. The sealing mechanism plays a crucial role in ensuring the sealing of the wellhead protector and preventing oil and gas leakage. It is an important line of defense to ensure the safe and stable operation of the entire device.

[0034] The sealing mechanism includes a fixing plate 15, which is typically made of a high-strength metal material compatible with the housing 1, such as carbon steel. The carbon steel fixing plate 15 has good strength and rigidity, can stably support other components and withstand certain pressure, and is relatively economical in cost. A fixing rod 16 is slidably connected inside the fixing plate 15. The fixing rod 16 is a key component connecting the limiting plate 18 and the spring 17. Its material is generally metal, such as stainless steel. The stainless steel fixing rod 16 has good corrosion resistance and high strength, can work stably for a long time in an oil and gas environment, effectively prevents rust and corrosion, and ensures the reliability of the connection. A spring 17 is sleeved on the outside of the fixing rod 16. The spring 17 plays a key role in elastic adjustment and auxiliary sealing in the sealing mechanism. The spring 17 is mostly made of high-quality spring 17 steel, which undergoes a special heat treatment process to obtain good elastic properties and fatigue life. The bottom of the fixed rod 16 is fixedly connected to the limit plate 18. The limit plate 18 is an important component that limits the range of motion of the fixed rod 16 and works in coordination with other components. Its material is generally metal, such as stainless steel. The stainless steel limit plate 18 has good corrosion resistance and high strength, and can work stably for a long time in oil and gas environments, effectively preventing rust and corrosion, and ensuring the reliability of cooperation with other components.

[0035] A rubber ring 19 is fixedly connected to the other end of the fixing plate 15. As a key component that directly contacts oil and gas and achieves a sealing function, the rubber ring 19 is generally made of rubber materials with good sealing performance and corrosion resistance, such as nitrile rubber. The nitrile rubber ring 19 is known for its good oil resistance, wear resistance, and low cost, and is widely used in some ordinary oil and gas field environments, meeting the sealing requirements of general oil and gas transportation. The shape of the rubber ring 19 is designed according to the shape of the sealing part, and is generally a circular ring with a circular cross-section to meet sealing requirements. The fixing plate 15 is externally fixedly connected to the left and right sides of the inside of the housing 1.

[0036] The opening and closing mechanism includes an extension plate 4, which serves as the mounting base for the mounting frame 5 and other related components. Its material is generally metal, such as carbon steel. The extension plate 4 is typically rectangular, and its length is determined based on the dimensions and layout requirements of the mounting frame 5. The top of the extension plate 4 is fixedly connected to the mounting frame 5, which serves as the mounting carrier for components such as the motor 6. Its material is generally metal, such as carbon steel. The mounting frame 5 is typically frame-type, and its structure is designed based on the shape, size, and rotation direction of the motor 6 to ensure that the motor 6 can be stably mounted on the mounting frame 5 and will not shake or shift during operation. The motor 6 is fixedly connected inside the mounting frame 5, serving as the power source for the opening and closing mechanism. Its type can be selected according to actual needs, such as a DC motor 6. DC motors have advantages such as easy speed control, large starting torque, and high efficiency, making them suitable for applications requiring precise control of opening and closing speed and position.

[0037] An eccentric wheel 7 is fixedly connected to the drive end of the motor 6. The eccentric wheel 7 plays a key role in the opening and closing mechanism in converting the rotational motion of the motor 6 into linear motion. The eccentric wheel 7 is generally made of metal, such as carbon steel. Carbon steel eccentric wheels 7 have high strength and rigidity, can stably withstand the torque transmitted from the motor 6 and convert it into effective thrust, and their cost is relatively low. A connecting shaft 8 is fixedly connected to the outer top of the eccentric wheel 7. The connecting shaft 8, as a component connecting the eccentric wheel 7 and the rotating plate 9, is also generally made of metal, such as carbon steel. Carbon steel connecting shaft 8 has high strength and rigidity, can stably transmit force and motion, and its cost is relatively low. A rotating plate 9 is rotatably connected to the outside of the connecting shaft 8. The rotating plate 9, as an intermediate component connecting the connecting shaft 8 and the sliding plate 10, is also generally made of metal, such as carbon steel. Carbon steel rotating plate 9 has high strength and rigidity, can stably transmit force and motion, and its cost is relatively low. A sliding plate 10 is rotatably connected to the other end of the rotating plate 9. The sliding plate 10, as a key component controlling the opening and closing of the connecting pipe 3, is also generally made of metal, such as carbon steel. Carbon steel sliding plate 10 has high strength and rigidity, can stably withstand oil and gas pressure and the force of the opening and closing mechanism, and its cost is relatively low.

[0038] An anti-leakage component is fixedly connected inside the connecting pipe 3. The anti-leakage component can effectively prevent oil and gas from leaking inside the connecting pipe 3, ensuring the safety and environmental protection of oil and gas transportation. The anti-leakage component includes a sealing gasket 11. The sealing gasket 11 is the first line of defense against oil and gas leakage. Its material is generally a rubber material with good sealing performance and corrosion resistance, such as fluororubber. The fluororubber sealing gasket 11 has excellent corrosion resistance, high temperature resistance and oil resistance. It can maintain good sealing performance for a long time in harsh oil and gas environments (such as high temperature, high pressure, corrosive media, etc.). The sealing gasket 11 is fixedly connected to the inside of the connecting pipe 3. The sliding plate 10 is slidably connected to the inside of the sealing gasket 11. A sealing plate 12 is fixedly connected to the left side of the sliding plate 10. The sealing plate 12 is a component that further enhances the sealing effect. Its material is generally a metal or rubber material, such as carbon steel. The carbon steel sealing plate 12 has high strength and rigidity and can stably withstand the oil and gas pressure and the reaction force of the sealing gasket 11. The left side of the extension plate 4 is fixedly connected to the right side of the mounting plate 2.

[0039] Reference Figures 2 to 4 A pipe 13 is fixedly connected to the top of the casing 1. The pipe 13 is generally designed to be cylindrical, and its diameter is determined based on the oil and gas field's production, wellhead pressure, and the requirements of subsequent connection equipment, typically ranging from a few centimeters to tens of centimeters. A flange 14 is fixedly connected to the top of the pipe 13. As a commonly used connecting component, the flange 14 plays an important role in the connection process of the entire oil and gas transportation system. The material of the flange 14 is generally consistent with that of the pipe 13 to ensure overall strength and corrosion resistance. The flange 14 is disc-shaped, and its outer diameter is determined based on the diameter of the pipe 13 and the required connection. The strength of the well body is determined by the strength of the well casing. A mounting plate 20 is fixedly connected to the bottom of the casing 1. The mounting plate 20 acts as an important bridge connecting the casing 1 and the well body 21. The mounting plate 20 is usually made of high-strength metal materials, such as carbon steel or alloy steel. Carbon steel mounting plates 20 have good strength and processing performance, can stably bear the weight of the casing 1 and various forces transmitted during oil and gas extraction, and are relatively cost-effective. The bottom of the mounting plate 20 is fixedly connected to the well body 21, which is the core part of the entire oil and gas field development and the channel for extracting oil and gas from underground reservoirs. It is generally composed of multiple layers of casing, cemented layers, etc. The casing material is mostly high-strength alloy steel, which has extremely high strength and good corrosion resistance, and can withstand the huge formation pressure deep underground as well as the scouring and corrosion effects of oil and gas.

[0040] Bolts 22 are detachably connected to the exterior of the mounting plate 20 and the well body 21. Bolts 22 play a crucial role in securing the mounting plate 20 and the well body 21. The bolts 22 are typically made of high-strength alloy steel, which possesses high strength and toughness, capable of withstanding significant tensile and shear forces. This ensures that the bolts will not loosen or break during oil and gas extraction, even under complex vibrations and pressure changes. The bolts 22 are threaded into the interior of both the mounting plate 20 and the well body 21, and are evenly distributed. During installation, the bolts 22 are first passed through the corresponding bolt holes on the mounting plate 20 and the well body 21. Then, a nut is screwed onto one end of the bolt 22. Using a suitable tool, the nut is gradually tightened to the specified torque, forming a secure threaded connection between the bolt 22, the mounting plate 20, and the well body 21. This completes the reliable connection between the wellhead protector and the well body 21, providing strong protection for the safe development of the oil and gas field. The sliding plate 10 is externally slidably connected to the inside of the sealing gasket 11, and externally slidably connected to the inside of the connecting tube 3. One end of the spring 17 is fixedly connected to the outside of the limiting plate 18, and the other end of the spring 17 is fixedly connected to the outside of the fixing plate 15.

[0041] Working principle: When the protector is opened and closed, the motor 6 is started. Under the action of the motor 6, the motor 6 can drive the eccentric wheel 7 to rotate. The rotation of the eccentric wheel 7 drives the rotating plate 9 to rotate through the connecting shaft 8. The rotation of the rotating plate 9 causes the sliding plate 10 to slide inside the sealing gasket 11. The sliding of the sliding plate 10 causes the sealing plate 12 to slide inside the housing 1, thereby realizing the opening and closing of the protector.

[0042] As the sealing plate 12 moves, it comes into contact with the limiting plate 18, which in turn causes the limiting plate 18 to slide the fixing rod 16 outside the fixing plate 15. As the fixing rod 16 slides, the spring 17 outside the fixing rod 16 deforms, which in turn allows the rubber ring 19 to securely seal the inside of the housing 1. A wellhead protector with a good seal can reduce the emission of harmful substances in oil and gas to the outside world. For soil, it can prevent oil and gas infiltration, avoid soil structure damage and vegetation death.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 wellhead protector for oil and gas field development, comprising a housing (1), characterized in that: An installation plate (2) is fixedly connected to the outer right side of the housing (1), a connecting pipe (3) is fixedly connected to the outer right side of the installation plate (2), an opening and closing mechanism is fixedly connected to the outer right side of the installation plate (2), and a sealing mechanism is fixedly connected to both the left and right sides inside the housing (1). The opening and closing mechanism includes an extension plate (4), a mounting bracket (5) is fixedly connected to the top of the extension plate (4), a motor (6) is fixedly connected inside the mounting bracket (5), an eccentric wheel (7) is fixedly connected to the drive end of the motor (6), a connecting shaft (8) is fixedly connected to the top of the eccentric wheel (7), a rotating plate (9) is rotatably connected to the outside of the connecting shaft (8), a sliding plate (10) is rotatably connected to the other end of the rotating plate (9), a leak-proof component is fixedly connected inside the connecting pipe (3), a sealing plate (12) is fixedly connected to the left side of the sliding plate (10), and the right side of the extension plate (4) is fixedly connected to the right side of the mounting plate (2).

2. The wellhead protector for oil and gas field development according to claim 1, characterized in that: The leak-proof assembly includes a sealing gasket (11), the outside of which is fixedly connected to the inside of the connecting pipe (3), and the outside of the sliding plate (10) is slidably connected to the inside of the sealing gasket (11).

3. The wellhead protector for oil and gas field development according to claim 1, characterized in that: The sealing mechanism includes a fixing plate (15), a fixing rod (16) is slidably connected inside the fixing plate (15), a spring (17) is sleeved on the outside of the fixing rod (16), a limit plate (18) is fixedly connected to the bottom of the fixing rod (16), a rubber ring (19) is fixedly connected to the other end of the fixing plate (15), and the outside of the fixing plate (15) is fixedly connected to the left and right sides inside the housing (1).

4. The wellhead protector for oil and gas field development according to claim 1, characterized in that: A pipe (13) is fixedly connected to the top of the housing (1), and a flange (14) is fixedly connected to the top of the pipe (13).

5. A wellhead protector for oil and gas field development according to claim 1, characterized in that: The bottom of the housing (1) is fixedly connected to the mounting plate (20), and the bottom of the mounting plate (20) is fixedly connected to the oil well body (21).

6. A wellhead protector for oil and gas field development according to claim 5, characterized in that: The mounting plate (20) is detachably connected to the outside of the oil well body (21) by bolts (22), and the outside of the bolts (22) are threaded to the inside of the mounting plate (20) and the oil well body (21) respectively, and are evenly distributed.

7. A wellhead protector for oil and gas field development according to claim 2, characterized in that: The outer side of the sliding plate (10) is slidably connected to the inside of the sealing gasket (11), and the outer side of the sliding plate (10) is slidably connected to the inside of the connecting pipe (3).

8. A wellhead protector for oil and gas field development according to claim 3, characterized in that: One end of the spring (17) is fixedly connected to the outside of the limiting plate (18), and the other end of the spring (17) is fixedly connected to the outside of the fixing plate (15).

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