Integrated wellhead connection blowout preventer

Abstract

The utility model relates to the technical field of petroleum drilling, and provides an integrated wellhead connection blowout preventer which comprises a protective cylinder. The driving force of the motor drives the motor, the two-way screw, the connecting plate, the fixing disc, the connecting ring, the fixing plate, the threaded block, the sealing plate and other components to be matched with one another, the motor fixedly installed on the side face of the fixing plate is started, and therefore the two-way screw fixed to the tail end of the output shaft is driven to rotate. According to the technical scheme, the two-way screw rotates to drive the two threaded blocks in threaded connection to the circumferential face to get close to each other, when the oil well is not extracted any more, the oil well is in a sealed state, damage to personnel and machines during blowout is avoided, and by means of the technical scheme, the problem that in the related technology, when oil stored in the integrated oil well does not need to be extracted, the oil well cannot be extracted is solved. The oil well is in an open state, and when the oil well is erupted, no safety measure exists, so that the technical problem that machines and personnel are damaged is solved.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of oil drilling technology, specifically to an integrated wellhead connection blowout preventer. Background Technology

[0002] Traditional wellhead connections often employ a split structure, with each component assembled independently, such as flange connections or threaded connections. This connection method has several drawbacks. On the one hand, the sealing performance of split structures is poor. During oil and gas extraction, downhole pressures are complex and variable, and the sealing surfaces between split components are prone to leakage due to pressure fluctuations, vibrations, and other factors, increasing the risk of blowouts. For example, in high-pressure gas well extraction, the probability of sealing failure of split-type wellhead connection devices is relatively high. Once a leak occurs, it may lead to serious safety accidents and environmental pollution. On the other hand, the installation and disassembly process of split structures is cumbersome, requiring a large amount of manual operation, which consumes time and labor costs. Furthermore, frequent installation and disassembly can easily cause wear and tear on components, further reducing sealing performance and connection strength.

[0003] When the oil stored inside the integrated well is not being extracted and the well is in an open state, there are no safety measures in place when a blowout occurs, which can cause damage to machinery and personnel. This needs to be improved. Therefore, we have proposed an integrated wellhead connection blowout preventer. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this utility model provide an integrated wellhead connection blowout preventer, which solves the problem in related technologies where, when oil is not being extracted and the oil well is in an open state, there are no safety measures in place when the oil well erupts, resulting in damage to machinery and personnel.

[0005] According to one aspect, at least one embodiment of the present invention provides an integrated wellhead connection blowout preventer, including a protective cylinder, wherein a sealing ring is fixedly connected to the circumferential surface of the protective cylinder, and a blowout preventer mechanism is provided on the circumferential surface of the protective cylinder.

[0006] The blowout preventer includes a fixed plate, which is fixedly connected to the circumferential surface of the protective cylinder. A connecting plate is fixedly connected to the circumferential surface of the fixed plate, and a connecting ring is fixedly connected to the inner side wall of the connecting plate. A fixed plate is fixedly connected to the circumferential surface of the protective cylinder, and a motor is fixedly mounted on the side of the fixed plate. A bidirectional screw is fixedly connected to the end of the output shaft of the motor, and a threaded block is threadedly connected to the circumferential surface of the bidirectional screw. A sealing plate is fixedly connected to the rear side of the threaded block.

[0007] For example, in at least one embodiment of the present invention, the integrated wellhead connection blowout preventer further includes: the circumferential surface of the protective cylinder is provided with an installation groove, the design of which facilitates the installation of the protective cylinder on the circumferential surface of the oil well.

[0008] The number of sealing plates is set to two, and the side cross-section of the sealing plates is set to semi-circular. The design of the sealing plates is conducive to completing the sealing state of the protective cylinder when the two sealing plates come into contact and fit together.

[0009] The sealing plate is slidably connected to the bottom of the connecting ring and to the top of the protective cylinder. The sealing plate sliding at the bottom of the connecting ring facilitates the linear movement of the threaded block.

[0010] The side section of the fixing plate is L-shaped, and the number of threaded blocks is set to two. The design of the fixing plate is conducive to the stable operation of the motor.

[0011] According to another aspect, at least one embodiment of the present invention also provides an integrated wellhead connection blowout preventer, including a reinforcing mechanism provided on the top of the sealing plate, the reinforcing mechanism including a hollow block, the hollow block being fixedly connected to the top of the sealing plate, a return spring being fixedly connected to the inner side wall of the hollow block, a limit block being fixedly connected to the end of the return spring away from the hollow block, and a rectangular plate being fixedly connected to the top of another sealing plate. The above design is beneficial to make the two sealing plates fit more tightly when the contact block enters the hollow block.

[0012] For example, in at least one embodiment of the present invention, the integrated wellhead connection blowout preventer further includes: a fixing rod fixedly connected to the side of the rectangular plate, and a contact block fixedly connected to the circumferential surface of the fixing rod. The design of the contact block facilitates the squeezing of the limiting block, thereby keeping the reset spring in a taut state.

[0013] The initial state of the return spring is set to the relaxed state. The number of return springs is set to six, in pairs, and they are symmetrical to each other along the vertical central axis of the inner sidewall of the hollow block. The side cross section of the contact block is set to trapezoidal, and the side cross section of the limiting block is set to trapezoidal. The above design is beneficial to completing the limiting of the contact block when the limiting block contacts the side of the contact block.

[0014] The bottom of the connecting ring has a first groove and a second groove. This design helps to prevent the protective cylinder from not being able to be completely open.

[0015] The contact block is located inside the hollow block, the side section of the hollow block is set to be concave, the rectangular plate is slidably connected to the second slide groove, and the hollow block is slidably connected to the first slide groove. The above design is conducive to the hollow block and the rectangular plate moving together with the subsequent sealing plate.

[0016] The beneficial effects of the embodiments of this utility model are as follows:

[0017] 1. In this utility model, the driving force of the motor drives the motor, bidirectional screw, connecting plate, fixed plate, connecting ring, fixed plate, threaded block, sealing plate and other components to cooperate with each other, realize the start of the motor fixedly installed on the side of the fixed plate, thereby driving the bidirectional screw fixed at the end of the output shaft to rotate. The rotation of the bidirectional screw causes the two threaded blocks threaded on the circumferential surface to move closer to each other. When the oil well is no longer being pumped, the oil well is in a sealed state to avoid damage to personnel and machinery in the event of a blowout.

[0018] 2. In this utility model, the movement of the sealing plate drives the hollow block, rectangular plate, return spring, limit block, fixing rod, contact block, first slide groove, and second slide groove to cooperate with each other. When the rectangular plate moves, it drives the fixing rod fixed on the side to move. The movement of the fixing rod drives the contact block fixed on the other end to move. When the two sealing plates approach each other to a certain position, the contact block presses against the limit block fixed on the other end of the return spring. When the oil well is sealed, the contact force between the two sealing plates is enhanced, thus improving the protection efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0020] Figure 1 This is a structural schematic diagram of the three-dimensional appearance of the present invention from a first-person perspective;

[0021] Figure 2 This is a three-dimensional structural diagram of the fixing plate from a first-person perspective of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the sealing plate from a second perspective of the present invention.

[0023] Figure 4 This is a three-dimensional structural diagram of the hollow block of this utility model.

[0024] Figure 5 This is a three-dimensional structural diagram of the connecting ring of this utility model.

[0025] In the diagram: 1. Protective cylinder; 2. Sealing ring; 3. Mounting groove; 4. Blowout preventer; 41. Fixing plate; 42. Connecting plate; 43. Connecting ring; 44. Fixing plate; 45. Motor; 46. Bidirectional screw; 47. Threaded block; 48. Sealing plate; 5. Reinforcing mechanism; 51. Hollow block; 52. Rectangular plate; 53. Return spring; 54. Limiting block; 55. Fixing rod; 56. Contact block; 57. First slide groove; 58. Second slide groove. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0027] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-5 As shown, it illustrates an integrated wellhead connection blowout preventer in one embodiment of the present invention, including a protective cylinder 1, a sealing ring 2 fixedly connected to the circumferential surface of the protective cylinder 1, and a blowout preventer mechanism 4 provided on the circumferential surface of the protective cylinder 1.

[0033] The blowout preventer 4 includes a fixed plate 41, which is fixedly connected to the circumferential surface of the protective cylinder 1. A connecting plate 42 is fixedly connected to the circumferential surface of the fixed plate 41. A connecting ring 43 is fixedly connected to the inner side wall of the connecting plate 42. A fixed plate 44 is fixedly connected to the circumferential surface of the protective cylinder 1. A motor 45 is fixedly installed on the side of the fixed plate 44. A bidirectional screw 46 is fixedly connected to the end of the output shaft of the motor 45. A threaded block 47 is threadedly connected to the circumferential surface of the bidirectional screw 46. A sealing plate 48 is fixedly connected to the rear side of the threaded block 47.

[0034] In some examples, the protective casing 1 is provided with an installation groove 3 on its circumferential surface. The design of the installation groove 3 is conducive to the installation of the protective casing 1 on the circumferential surface of the oil well.

[0035] The number of sealing plates 48 is set to two, and the side cross section of the sealing plate 48 is set to semi-circular. The design of the sealing plate 48 is advantageous so that when the two sealing plates 48 come into contact and fit together, the protective cylinder 1 is sealed.

[0036] The sealing plate 48 is slidably connected to the bottom of the connecting ring 43 and to the top of the protective cylinder 1. The sliding of the sealing plate 48 to the bottom of the connecting ring 43 facilitates the linear movement of the threaded block 47.

[0037] The side section of the fixing plate 44 is set to L-shape, and the number of threaded blocks 47 is set to two. The design of the fixing plate 44 is conducive to the stable operation of the motor 45.

[0038] For example, such as Figures 1-5As shown, when the protective cylinder 1 needs to be installed, the protective cylinder 1 is fitted onto the circumference of the oil well. Then, the installation groove 3 on the circumference of the protective cylinder 1 is aligned with the circular groove on the circumference of the oil well. After inserting the iron pestle to complete the installation of the protective cylinder 1, the motor 45 fixedly installed on the side of the fixed plate 44 is then started, thereby driving the bidirectional screw 46 fixed at the end of the output shaft to rotate. The rotation of the bidirectional screw 46 causes the two threaded blocks 47 threadedly connected to the circumference to move closer to each other. At the same time, the two sealing plates 48 fixed on the rear side of the two threaded blocks 47 slide closer to each other at the bottom of the protective cylinder 1. When the sealing plates 48 move to a certain position, they come into contact and stick together, completing the sealing state of the protective plate 1 and the sealing of the oil well. When it is necessary to open the oil well, the motor 45 is started in reverse, thereby opening the protective cylinder 1.

[0039] like Figures 1-5 As shown, this invention illustrates an integrated wellhead connection blowout preventer in another embodiment of the present invention. It is largely the same as the above-described technical solution, so only the differences are described. The reinforcing mechanism 5 is provided on the top of the sealing plate 48. The reinforcing mechanism 5 includes a hollow block 51, which is fixedly connected to the top of the sealing plate 48. A return spring 53 is fixedly connected to the inner wall of the hollow block 51. A limit block 54 is fixedly connected to the end of the return spring 53 away from the hollow block 51. A rectangular plate 52 is fixedly connected to the top of another sealing plate 48. The above design is beneficial to make the two sealing plates 48 fit more tightly when the contact block 56 enters the hollow block 51.

[0040] In some examples, the rectangular plate 52 is also fixedly connected to a fixing rod 55 on its side, and a contact block 56 is fixedly connected to the circumferential surface of the fixing rod 55. The design of the contact block 56 is conducive to pressing the limiting block 54, thereby keeping the return spring 53 in a taut state.

[0041] The initial state of the return spring 53 is set to the relaxed state. The number of return springs 53 is set to six, in pairs, and they are symmetrical to each other along the vertical central axis of the inner sidewall of the hollow block 51. The side cross section of the contact block 56 is set to trapezoidal, and the side cross section of the limiting block 54 is set to trapezoidal. The above design is beneficial to completing the limiting of the contact block 56 when the limiting block 54 contacts the side of the contact block 56.

[0042] The bottom of the connecting ring 43 is provided with a first groove 57 and a second groove 58. The above design helps to prevent the protective cylinder 1 from not being able to be fully open.

[0043] The contact block 56 is located inside the hollow block 51. The side section of the hollow block 51 is set to be concave. The rectangular plate 52 is slidably connected to the second slide groove 58, and the hollow block 51 is slidably connected to the first slide groove 57. The above design is conducive to making the hollow block 51 and the rectangular plate 52 move with the sealing plate 48.

[0044] For example, such as Figures 1-5 As shown, when the two sealing plates 48 approach each other, the rectangular plate 52 fixed above the sealing plate 48 and the hollow block 51 fixed on the top of the other sealing plate 48 move closer together. When the rectangular plate 52 moves, it drives the fixing rod 55 fixed on the side to move. The movement of the fixing rod 55 drives the contact block 56 fixed on the other end to move. When the two sealing plates 48 approach each other to a certain position, the contact block 56 presses against the limiting block 54 fixed on the other end of the return spring 53. As the sealing plates 48 continue to move, the contact block 56 presses against the limiting block 54. At the same time, when the limiting block 54 is pressed, the return spring 53 is in a taut state. When the return spring 53 is in a taut state, it drives the two limiting blocks 54 to move away from each other. When the contact block 56 moves to a certain position, the side of the contact block 56 contacts the inclined surface of the limiting block 54, thus limiting the contact block 56 and making the two sealing plates 48 fit more tightly. Then, when the two sealing plates 48 move away, the side of the contact block 56 presses against the inclined surface of the limiting block 54 again, so that the return spring 53 is in a taut and contracted state, and at the same time, it drives the two limiting blocks 54 to move away from each other again. As the sealing plate 48 continues to move, the contact block 56 is disengaged from the interior of the hollow block 51, and the limiting of the contact block 56 is achieved. When the sealing plate 48 moves to a certain position, the hollow block 51 and the rectangular plate 52 slide on the inner walls of the first slide groove 57 and the second slide groove 58, preventing the protective cylinder 1 from being in a partially open state.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An integrated wellhead connection blowout preventer, characterized in that, Includes a protective cylinder (1), a sealing ring (2) is fixedly connected to the circumferential surface of the protective cylinder (1), and a blowout prevention mechanism (4) is provided on the circumferential surface of the protective cylinder (1). The anti-spray mechanism (4) includes a fixed plate (41), which is fixedly connected to the circumferential surface of the protective cylinder (1). A connecting plate (42) is fixedly connected to the circumferential surface of the fixed plate (41). A connecting ring (43) is fixedly connected to the inner side wall of the connecting plate (42). A fixed plate (44) is fixedly connected to the circumferential surface of the protective cylinder (1). A motor (45) is fixedly installed on the side of the fixed plate (44). A bidirectional screw (46) is fixedly connected to the end of the output shaft of the motor (45). A threaded block (47) is threadedly connected to the circumferential surface of the bidirectional screw (46). A sealing plate (48) is fixedly connected to the rear side of the threaded block (47).

2. The integrated wellhead connection blowout preventer according to claim 1, characterized in that, The protective cylinder (1) has an installation groove (3) on its circumferential surface.

3. The integrated wellhead connection blowout preventer according to claim 2, characterized in that, The number of sealing plates (48) is set to two, and the side cross section of the sealing plates (48) is set to semi-circular.

4. The integrated wellhead connection blowout preventer according to claim 3, characterized in that, The sealing plate (48) is slidably connected to the bottom of the connecting ring (43), and the sealing plate (48) is slidably connected to the top of the protective cylinder (1).

5. The integrated wellhead connection blowout preventer according to claim 4, characterized in that, The side section of the fixing plate (44) is set to L-shape, and the number of the threaded blocks (47) is set to two.

6. The integrated wellhead connection blowout preventer according to claim 5, characterized in that, The top of the sealing plate (48) is provided with a reinforcing mechanism (5), the reinforcing mechanism (5) includes a hollow block (51), the hollow block (51) is fixedly connected to the top of the sealing plate (48), a return spring (53) is fixedly connected to the inner side wall of the hollow block (51), a limit block (54) is fixedly connected to one end of the return spring (53) away from the hollow block (51), and a rectangular plate (52) is fixedly connected to the top of the other sealing plate (48).

7. The integrated wellhead connection blowout preventer according to claim 6, characterized in that, A fixing rod (55) is fixedly connected to the side of the rectangular plate (52), and a contact block (56) is fixedly connected to the circumferential surface of the fixing rod (55).

8. The integrated wellhead connection blowout preventer according to claim 7, characterized in that, The initial state of the reset spring (53) is set to the relaxed state. The number of reset springs (53) is set to six, in pairs, and they are symmetrical to each other along the vertical central axis of the inner wall of the hollow block (51). The side cross section of the contact block (56) is set to trapezoidal, and the side cross section of the limiting block (54) is set to trapezoidal.

9. The integrated wellhead connection blowout preventer according to claim 8, characterized in that, The bottom of the connecting ring (43) is provided with a first groove (57) and the bottom of the connecting ring (43) is provided with a second groove (58).

10. The integrated wellhead connection blowout preventer according to claim 9, characterized in that, The contact block (56) is located inside the hollow block (51), the side section of the hollow block (51) is set to be concave, the rectangular plate (52) is slidably connected to the second slide groove (58), and the hollow block (51) is slidably connected to the first slide groove (57).

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