A blowout preventer gate body for wellhead equipment

Abstract

Provided is a gate body of a blowout preventer for a wellhead device, comprising a first gate body and a second gate body that move relative to each other from left to right; the first gate body is an integrated structure with a first upper guide plate and a first lower guide plate; the second gate body is an integrated structure with a second upper guide plate and a second lower guide plate; the transition between the first gate body and the second gate body is rounded; the first upper guide plate, the first lower guide plate, the second upper guide plate and the second lower guide plate are respectively formed with arcs; the upper and lower guide plates of the first gate body and the second gate body are respectively formed with axial grooves. The utility model solves the problems of the existing gate body that is difficult to disassemble and assemble, difficult to assemble, large in size, low in efficiency and poor in safety; it has a simple structure, reasonable and compact design, is easy to use and has good versatility.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure wellhead blowout preventer devices for oil and gas well cable logging and well control equipment, and in particular relates to a blowout preventer gate body for wellhead equipment. Background Art

[0002] The traditional gate body, guide plate and gate body of the BOP are separate, and rely on screws to tighten and position during installation, or in the form of two diagonal halves, which consumes time and materials during processing; and because the diagonal length of the single-side gate is long, the oil cylinder of the BOP body is lengthened, which invisibly increases the overall size and cost of the BOP, violates the wellhead operation requirements of simplicity and ease of operation, and is not conducive to wellhead operations.

[0003] As the working pressure requirements become higher and higher, the strength, shape, structure and size requirements of the gate body become more stringent. Relying on screw positioning and tightening or increasing the gate length to change the original BOP dimensions can no longer meet the design requirements.

[0004] Therefore, it is urgent to develop a gate body with simple structure, safety, reliability and convenient operation. Utility Model Content

[0005] The utility model solves the technical problem of providing a blowout preventer gate body for wellhead equipment, solving the problems of difficult disassembly and assembly, large assembly difficulty, large volume, low efficiency and poor safety of the existing gate body.

[0006] The utility model adopts the following technical scheme: a gate body of a blowout preventer of a wellhead equipment, comprising a first gate body and a second gate body which move relative to each other left and right; the first gate body, a first upper guide plate and a first lower guide plate are an integrated structure; the second gate body, a second upper guide plate and a second lower guide plate are an integrated structure; the transition between the first gate body and the second gate body is provided with fillets; the first upper guide plate, the first lower guide plate, the second upper guide plate and the second lower guide plate are respectively provided with arcs; and axial grooves are respectively provided between the upper and lower guide plates of the first gate body and the second gate body.

[0007] Among the above technical solutions, as the preferred technical solution of the present utility model: the first upper guide plate is a front-rear axis symmetrical structure; the first lower guide plate is a front-rear axis symmetrical structure.

[0008] Among the above technical solutions, as the preferred technical solution of the utility model: the first upper guide plate is an inwardly concave V-shaped axisymmetric structure; the first lower guide plate is an outwardly convex V-shaped axisymmetric structure.

[0009] In the above technical solution, as a further improved technical solution of the utility model: a countersunk hole is formed on the top of the outward convex V-shaped axially symmetrical structure of the first lower guide plate.

[0010] Among the above technical solutions, as the preferred technical solution of the utility model: the second upper guide plate is a front-rear axis symmetrical structure; the second lower guide plate is a front-rear axis symmetrical structure.

[0011] Among the above technical solutions, as the preferred technical solution of the utility model: the second upper guide plate is an inwardly concave V-shaped axisymmetric structure; the second lower guide plate is an outwardly convex V-shaped axisymmetric structure.

[0012] Among the above technical solutions, as the preferred technical solution of the utility model: the first upper guide plate, the first lower guide plate, the second upper guide plate, and the second lower guide plate respectively have a V-shaped angle; the V-shaped angle is 110° to 135°.

[0013] The advantages of this utility model compared with the prior art:

[0014] 1. The gate body and the guide plate of the utility model adopt an integrated structure, eliminating the screw positioning and screw tightening, thereby eliminating the errors caused by threaded connection and multiple positioning, making the fit between the gate body and the gate cavity more perfect, and reducing the damage of the guide plate to the gate cavity.

[0015] 2. The rounded corner design of the gate body of the utility model reduces the sharp corners and edges on the parts, and better protects the gate cavity from being damaged by the sharp corners and edges on the gate body.

[0016] 3. The utility model can better complete the sealing operation, better protect the blowout prevention device, and can meet the requirements of different working pressures. At the same time, it reduces the processing difficulty of the gate body, saves a lot of processing costs, and improves production efficiency.

[0017] 4. The utility model has a simple structure, reasonable and compact design, is easy to use and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial cross-sectional view of the front view of the first gate body of the utility model;

[0019] Figure 2 It is a top view of the first gate body of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the first gate body of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the second gate body of the utility model;

[0022] Figure 5 It is a bottom perspective view of the second gate body of the utility model;

[0023] In the figure: 1-first gate body, 2-second gate body, 101-first upper guide plate, 102-first lower guide plate, 201-second upper guide plate, 202-second lower guide plate, 3-rounded corner, 4-arc, 5-axial groove, 1021-countersunk hole. DETAILED DESCRIPTION

[0024] The following will be combined with the attached embodiment of the utility model Figure 1-5 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] A blowout preventer gate body for wellhead equipment, (such as Figure 3 , Figure 4 The blowout preventer gate body of the wellhead equipment (shown in the figure) comprises a first gate body 1 and a second gate body 2 that move relative to each other. The gate body of the wellhead equipment blowout preventer with the first gate body 1 and the second gate body 2 that move relative to each other has high sealing performance under high pressure and large flow; reasonable structure, convenient operation and installation, good automatic alignment and flow control functions and automatic sand cleaning functions, etc., and has significant technical advantages; these advantages make the equipment play an important role in wellhead safety control and provide reliable guarantee for drilling, well repair and oil testing operations.

[0026] The first gate body 1 is an integrated structure with the first upper guide plate 101 and the first lower guide plate 102. Similarly, the second gate body 2 is an integrated structure with the second upper guide plate 201 and the second lower guide plate 202. The gate body and the guide plate of the utility model adopt an integrated structure. Firstly, screw positioning and screw tightening are eliminated, thereby eliminating the errors caused by threaded connection and multiple positioning, making the match between the gate body and the gate cavity more perfect, and reducing the damage of the guide plate to the gate cavity.

[0027] Furthermore, the integrated structural design allows the gate body and the guide plate to be tightly combined, reducing the gap between components, thereby improving the overall sealing and stability. This compact structural design helps to reduce the vibration and deformation of the equipment under high pressure and high flow rate environments, further ensuring the stability and reliability of the blowout preventer. The integrated structural design simplifies the installation and disassembly process, reduces the operating steps and required tools, and thus improves work efficiency. The guide plate is used as a support and positioning component for the gate body. Its integrated design makes the opening and closing of the gate more accurate and rapid, reducing the safety risks caused by improper operation. The design of the guide plate enables the gate to be automatically centered during the closing process, ensuring that the gate fits tightly with the wellhead device and effectively preventing the leakage of high-pressure fluid. This automatic centering function not only improves the sealing performance of the equipment, but also reduces the safety hazards caused by human operation errors. The integrated structure makes the maintenance and maintenance of the gate body and the guide plate more convenient; when repairs or replacement of parts are required, they can be disassembled and replaced as a whole, reducing maintenance time and cost. At the same time, due to the reduction of gaps and connection points between components, the failure rate caused by corrosion, wear and other factors is reduced, and the service life of the equipment is extended. The integrated structure has strong adaptability and reliability, and can meet the needs of different well conditions and operating environments. Whether it is conventional drilling operations or emergency treatment under special working conditions, the blowout preventer with this structure can provide stable and reliable protection.

[0028] (like Figure 1 , Figure 2 , Figure 4 , Figure 5(As shown) the first gate body 1 and the second gate body 2 are both provided with fillets 3 at the transition. The fillet 3 design of the gate body of the utility model reduces the sharp corners and edges on the parts, and better protects the gate cavity from damage from the sharp corners and edges on the gate body. In addition, compared with the right-angle design, the fillet 3 transition design can effectively reduce the stress concentration at the key position of the gate body under high pressure and high stress environment; this design makes the gate body more uniform in stress distribution when it is subjected to the pressure in the well, and reduces the risk of fatigue damage and fracture caused by stress concentration. The fillet 3 design is softer than the right-angle edge, effectively preventing the damage that may be caused by the right-angle edge, and improving the safety of the staff during operation and maintenance. The fillet 3 transition design helps the gate body to fit closely with the wellhead device, reducing the risk of leakage caused by the gap; especially in the high pressure and high flow rate environment, the fillet 3 design can provide a better sealing effect to ensure the safety and stability of the wellhead. The fillet 3 design can reduce the wear and corrosion of the gate body during long-term use, and reduce the performance degradation and failure rate caused by these factors. Therefore, the fillet 3 transition design helps to extend the service life of the wellhead equipment blowout preventer and reduce the cost of maintenance and replacement. Furthermore, although the fillet 3 design may increase certain processes and costs in the manufacturing process, from the perspective of overall processability and aesthetics, the fillet 3 design makes the gate body more streamlined and improves the overall quality and aesthetics of the equipment.

[0029] The first upper guide plate 101, the first lower guide plate 102, the second upper guide plate 201, and the second lower guide plate 202 are respectively provided with arc 4. The arc 4 design enables the guide plate to slide more smoothly when guiding the gate body to close or open, reduces obstruction and friction, and improves the accuracy and stability of the guidance. The arc 4 design helps the guide plate to fit tightly with the wellhead device, reducing the risk of leakage caused by the gap. During the closing process, the arc 4 design can guide the gate body to enter the sealing position more accurately to ensure the sealing performance of the wellhead. The arc 4 design reduces the wear and corrosion of the guide plate during long-term use, because the arc surface is easier to form a lubricating oil film than the flat surface, reducing friction and wear.

[0030] Axial grooves 5 are formed between the upper and lower guide plates of the first gate body 1 and the second gate body 2. The design of the axial groove 5 enables the gate body to slide more smoothly during the closing or opening process; the introduction of the axial groove 5 makes the stress distribution of the guide plate more uniform when it is subjected to the pressure in the well, avoiding fracture or failure caused by stress concentration, which is particularly important in high-pressure and high-flow environment, and can significantly improve the safety performance and reliability of the blowout preventer. The design of the axial groove 5 helps the guide plate to guide the gate body to enter the sealing position more accurately during the closing process, ensuring the sealing performance of the wellhead. In the case of drilling tools in the well, the guiding effect of the axial groove 5 can move the drilling tools to the center of the wellbore during the closing process of the gate, further enhancing the reliability of the seal. The technical advantage of the axial groove 5 makes the blowout preventer of the wellhead equipment more stable and reliable during the closing and opening process, thereby improving the overall performance; this design can ensure that the blowout preventer can be quickly started and effectively sealed in an emergency, reducing the probability of malignant accidents such as blowouts.

[0031] In the above embodiments, as the preferred embodiments of the present utility model: (such as Figure 3 (As shown in the figure), the first upper guide plate 101 is a front-to-back axisymmetric structure; the first lower guide plate 102 is a front-to-back axisymmetric structure. The front-to-back axisymmetric structure design enables the guide plate to provide a more uniform and stable guiding force when guiding the gate body to close or open. This design helps to reduce the deviation and vibration of the gate body during movement, thereby ensuring that the gate body can accurately enter or leave the sealing position. The front-to-back axisymmetric structure can ensure that the stress distribution of the guide plate is more uniform when it is subjected to the pressure in the well. This design reduces the risk of fracture or failure caused by stress concentration and improves the structural strength and durability of the guide plate. The front-to-back axisymmetric structure helps the guide plate guide the gate body to enter the sealing position more accurately during the closing process. Since the contact surface between the guide plate and the gate body is more uniform and stable, the sealing performance of the wellhead can be ensured to be more reliable. This design is particularly important in preventing emergency situations such as blowouts and well surges. The front-to-back axisymmetric structure also makes the processing of the guide plate simpler and more efficient. The upper and lower guide plates are designed with a front-to-back axisymmetric structure, which can ensure that the blowout preventer is more stable and reliable during the closing and opening process, improve the overall performance and service life of the equipment, and reduce the failure rate and maintenance costs. The front-to-back axisymmetric structure also enables the guide plate to adapt to the needs of different well conditions and operating environments; whether it is conventional drilling operations or emergency treatment under special working conditions, this design of the blowout preventer can provide stable and reliable protection.

[0032] In the above embodiment, as a preferred embodiment of the present utility model: the first upper guide plate 101 is a concave V-shaped axisymmetric structure (such as Figure 2 The first lower guide plate 102 is an outwardly convex V-shaped axisymmetric structure (as shown); Figure 3 As shown). The design of the concave V-shaped upper guide plate and the convex V-shaped lower guide plate provides a clear guide track during the movement of the gate body. This structure helps the gate body to close or open more smoothly, reduces friction and vibration, and thus improves the accuracy and stability of the guidance. The design of the V-shaped structure enables the guide plate to disperse stress and reduce stress concentration when it is subjected to the pressure in the well; it improves the fatigue resistance and structural strength of the guide plate and reduces the risk of fracture or failure due to stress concentration. The concave V-shaped upper guide plate and the convex V-shaped lower guide plate can guide the gate body to enter the sealing position more accurately. During the closing process, this structure helps to ensure that the gate body fits tightly with the wellhead device, reduces the gap, and thus improves the sealing performance of the wellhead. Whether it is an empty well state with no tubing in the well or a situation with tubing in the well, the guide plate of this design can adapt, making the processing of the guide plate relatively simple and improving the manufacturing efficiency.

[0033] In the above embodiment, as a preferred embodiment of the present utility model: the second upper guide plate 201 is a front-rear axis symmetrical structure (such as Figure 4 The second lower guide plate 202 is a front-rear axis symmetrical structure. The technical effect is the same as described above and will not be repeated.

[0034] In the above embodiment, as a preferred embodiment of the present utility model: the second upper guide plate 201 is a concave V-shaped axisymmetric structure (such as Figure 4 The second lower guide plate 202 is an outwardly convex V-shaped axisymmetric structure. The technical effect is the same as described above and will not be repeated.

[0035] In the above embodiment, as a further improved embodiment of the utility model: the first lower guide plate 102 has a V-shaped axially symmetrical structure and a countersunk hole 1021 (such as Figure 3 ). The design of the countersunk hole 1021 can effectively reduce the overall weight of the lower guide plate, thereby reducing the overall weight of the equipment and reducing the load requirements on the wellhead equipment. The design of the countersunk hole 1021 is usually located at the top of the convex V-shaped structure, which can disperse the stress of the guide plate when it is under pressure and reduce stress concentration, thereby improving the strength and service life of the guide plate. The countersunk hole 1021 can be used as a storage and flow channel for lubricating oil or coolant, which helps to form an effective lubricating layer between the guide plate and the gate body, reduce friction and wear, and improve the durability of the guide plate. The design of the countersunk hole 1021 also increases the heat dissipation area of ​​the guide plate, which helps to maintain the good performance of the guide plate under high pressure and high temperature environments.

[0036] In the above embodiment, as a preferred embodiment of the utility model: the first upper guide plate 101, the first lower guide plate 102, the second upper guide plate 201, and the second lower guide plate 202 respectively have a V-shaped angle; the V-shaped angle is 110° to 135° (combined with Figure 2 ). Within this angle range, the guide plate can withstand greater pressure and torque without causing significant stress concentration; this helps to improve the structural strength of the guide plate and reduce the risk of fracture or failure due to stress concentration.

[0037] The working principle of the utility model is as follows: the gate body is installed in the gate cavity of the blowout preventer to replace the split combined structure of the original guide plate and the gate body; the screws are removed to eliminate errors, and the gate body and the gate cavity can be better matched to achieve a better sealing effect, and the gate body is not easily deformed under high pressure operation.

[0038] From the above description, it can be found that the gate body and the guide plate of the utility model adopt an integrated structure, which eliminates screw positioning and screw tightening, thereby eliminating the errors caused by threaded connection and multiple positioning, making the fit between the gate body and the gate cavity more perfect, and reducing the damage of the guide plate to the gate cavity.

[0039] The rounded corner 3 design of the gate body of the utility model reduces the sharp corners and edges on the parts, and better protects the gate cavity from being damaged by the sharp corners and edges on the gate body.

[0040] The utility model can better complete the sealing operation, better protect the blowout prevention device, and can meet the requirements of different working pressures, while reducing the processing difficulty of the gate body, saving a lot of processing costs, and improving production efficiency.

[0041] In summary, the utility model solves the problems of the existing gate body being difficult to disassemble and assemble, being difficult to assemble, being large in size, being inefficient and having poor safety; it has a simple structure, reasonable and compact design, is easy to use and has good versatility.

[0042] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification and equivalent replacement made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A gate body of a blowout preventer for a wellhead equipment, characterized in that: The invention comprises a first gate body (1) and a second gate body (2) which can move relative to each other. The first gate body (1) is an integral structure with a first upper guide plate (101) and a first lower guide plate (102). The second gate body (2) is an integral structure with a second upper guide plate (201) and a second lower guide plate (202). The transition between the first gate body (1) and the second gate body (2) is provided with a rounded corner (3). The first upper guide plate (101), the first lower guide plate (102), the second upper guide plate (201) and the second lower guide plate (202) are provided with circular arcs (4). Axial grooves (5) are provided between the upper and lower guide plates of the first gate body (1) and the second gate body (2).

2. The gate body of the blowout preventer of the wellhead equipment according to claim 1, characterized in that: The first upper guide plate (101) is a front-to-rear axis symmetrical structure; the first lower guide plate (102) is a front-to-rear axis symmetrical structure.

3. The ram body of the blowout preventer of the wellhead equipment according to claim 1 or 2, characterized in that: The first upper guide plate (101) is an inwardly concave V-shaped axisymmetric structure; the first lower guide plate (102) is an outwardly convex V-shaped axisymmetric structure.

4. The gate body of the blowout preventer of the wellhead equipment according to claim 3 is characterized in that: The first lower guide plate (102) has a V-shaped axially symmetrical structure and a countersunk hole (1021) is formed on the top of the convex portion.

5. The gate body of the blowout preventer of the wellhead equipment according to claim 1, characterized in that: The second upper guide plate (201) is a front-to-rear axis symmetrical structure; the second lower guide plate (202) is a front-to-rear axis symmetrical structure.

6. The ram body of the blowout preventer of the wellhead equipment according to claim 1 or 5, characterized in that: The second upper guide plate (201) is an inwardly concave V-shaped axisymmetric structure; the second lower guide plate (202) is an outwardly convex V-shaped axisymmetric structure.

7. The gate body of the blowout preventer of the wellhead equipment according to claim 1, characterized in that: The first upper guide plate (101), the first lower guide plate (102), the second upper guide plate (201), and the second lower guide plate (202) respectively have a V-shaped angle; the V-shaped angle is 110° to 135°.

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