Anti-jacking device and well drilling and repairing device

Abstract

The utility model relates to the technical field of well drilling and workover, and provides an anti-jacking device and a well drilling and workover device.The anti-jacking device comprises a shell, a through cavity penetrating through the two opposite ends of the shell is formed in the shell, and a pipe fitting penetrates through the through cavity; the abutting and locking device is movably arranged in the through cavity, the abutting and locking device comprises a clamping and abutting space with the adjustable size, and the clamping and abutting space is used for the pipe fitting to penetrate through and abut against the pipe fitting in a clamping mode; and the pushing device is arranged on the shell, and the pushing device is used for pushing the abutting locking device to adjust the size of the clamping abutting space. The device can play a fixing role by connecting the shell with the blowout preventer, and is convenient to install; the pipe fitting is arranged in the through cavity in a penetrating mode, the abutting locking device can flexibly move in the through cavity, the position of the abutting locking device can be accurately adjusted according to the actual position and size of the pipe fitting, and therefore the size of the clamping abutting space is controlled, effective cooperation with the pipe fitting is achieved, and it is ensured that the reliable upward-ejecting-preventing effect on the pipe fitting under different working conditions can be achieved.

Description

Technical Field

[0001] This application relates to the field of drilling and well workover technology, and in particular to an anti-overhead device and a drilling and well workover apparatus. Background Technology

[0002] In the extraction of resources such as oil and gas, the phenomenon of pipe fittings jacking up during drilling and well workover operations is common and poses serious hazards. Pipe fittings jacking up can lead to damage to wellhead equipment, pipe fittings detachment, and even blowouts, causing not only huge economic losses but also serious threats to the lives of workers and the surrounding environment.

[0003] In related technologies, the blowout preventer (BOP) typically uses its baffle gate to hold the pipe fitting in place, preventing it from climbing up. However, the primary function of the BOP gate is to seal the wellhead and prevent extracted resources from being ejected. Its effectiveness in preventing pipe fitting from climbing up is limited, and it is only effective in pressurized operations in low-pressure wells. This leads to frequent incidents of pipe fitting climbing up. Therefore, there is an urgent need to develop a simple, easy-to-operate, highly adaptable, and effective anti-cling device to ensure the safe and efficient conduct of drilling and well workover operations. Utility Model Content

[0004] This application provides an anti-overhead device and a drilling and workover device, which can improve the technical problem that the anti-overhead mechanism in related technologies has a limited effect in preventing pipe fittings from being pushed up, and can only work in pressurized operations in low-pressure wells.

[0005] In a first aspect, embodiments of this application provide an anti-top-down device, comprising:

[0006] The housing has an internal cavity extending through opposite ends of the housing, the cavity being used for the insertion of pipe fittings;

[0007] A locking device, movably disposed within the cavity, includes an adjustable locking space for the pipe fitting to pass through and for locking the pipe fitting in place; and

[0008] A pushing device is disposed on the housing and is used to push the locking device to adjust the size of the locking space.

[0009] The technical solutions described in this application embodiment have at least the following technical effects:

[0010] Compared with the prior art, the anti-uplift device provided in this application embodiment can achieve a fixing function simply by connecting the shell to the blowout preventer, making installation convenient. The pipe is inserted into the cavity, and the locking device can move flexibly within the cavity. It can precisely adjust its own position according to the actual position and size of the pipe, thereby controlling the size of the locking space to achieve effective cooperation with the pipe. This ensures that the pipe can play a reliable anti-uplift role under different working conditions. That is, the operator can quickly adjust and operate the locking device by pushing the device, without complicated installation steps and professional tools, which significantly shortens the operation preparation time, improves the overall efficiency of drilling and workover operations, and reduces labor and time costs. The combined structure of the shell and the locking device forms a stable anti-uplift system. That is, the shell provides stable support and installation foundation for the locking device. When the pipe is subjected to an upward force, the locking device can effectively disperse and transmit the force with the support of the shell, ensuring that the entire device can remain stable under complex working conditions and effectively prevent the pipe from being pushed up.

[0011] In some embodiments, the locking device includes a locking component and a mating component. The mating component includes at least two mating members disposed opposite each other, and the mating members enclose a mating space between each other. The locking component includes at least two locking members disposed opposite each other, and the locking members are located within the mating space. The locking members enclose the locking space between each other.

[0012] The outer wall of the locking component is provided with a first inclined surface, which is inclined downward from the central axis of the cavity toward the inner wall of the cavity. The inner wall of the mating component is provided with a second inclined surface, which is parallel to the opposite first inclined surface. The second inclined surface is used to fit against the opposite first inclined surface. The pushing device is used to push the mating component to adjust the size of the locking space.

[0013] In some embodiments, the locking device includes a locking assembly, which includes at least two opposing locking members, with each locking member enclosing a locking space. The outer wall of each locking member has a first inclined surface, which is inclined from top to bottom outward along the central axis of the pipe. The power output end of the pushing device has a third inclined surface, which is parallel to the opposing first inclined surface and is used to abut against the opposing first inclined surface. The pushing device is used to push the locking assembly to adjust the size of the locking space.

[0014] In some embodiments, the mating component has a semi-circular groove on the side near the pipe, and the first inclined surface is the groove wall of the semi-circular groove.

[0015] In some embodiments, the side wall of the housing has a through hole, one end of the pushing device is connected to the end of the mating member away from the locking member, and the other end of the pushing device passes through the through hole and extends to the outside of the housing.

[0016] In some embodiments, the inner wall of the housing is further provided with a mounting groove, which communicates with the through hole; the mating member includes a first state in which one end away from the pipe is located in the mounting groove, and a second state in which it is close to the pipe and the locking member abuts against the pipe and away from the mounting groove.

[0017] In some embodiments, the actuating device includes:

[0018] A rotating component, the rotating component passing through the through hole, the rotating component being rotatably connected to the housing; and

[0019] A pushing component is movably connected to the rotating member, and the pushing component and the rotating member are threadedly engaged; the pushing component is connected to the mating member.

[0020] In some embodiments, a limiting groove is formed within the through hole along the orifice direction, and the pushing component includes:

[0021] A pusher, wherein the pusher is located within the limiting groove, and one end of the pusher is connected to the mating member; and

[0022] A transmission component is connected to the end of the pushing component away from the mating component, and the transmission component and the rotating component are threadedly engaged.

[0023] In some embodiments, the pusher has an internal clearance space, through which the pusher can be fitted around the rotating member.

[0024] Secondly, this application also provides a drilling and workover device, including the anti-overhead device described in any of the above embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional schematic diagram of the anti-top-down device provided in the embodiments of this application;

[0027] Figure 2 One of the top perspective schematic diagrams of the anti-top-flipping device provided in the embodiments of this application;

[0028] Figure 3 The second top-view perspective diagram of the anti-top-flip device provided in the embodiments of this application.

[0029] The following are the labeling elements in the figure:

[0030] 100. Anti-top-out device; 10. Housing; 20. Locking device; 30. Pushing device; 1001. Through cavity; 2001. Locking space; 21. Locking assembly; 22. Matching assembly; 22101. Matching space; 211. Locking piece; 221. Matching piece; 21102. First inclined surface; 22102. Second inclined surface; 22102. Semi-circular groove; 1002. Through hole; 1003. Installation groove; 31. Rotating piece; 32. Pushing assembly; 1004. Limiting groove; 321. Pushing piece; 322. Transmission piece; 32101. Avoidance space. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0038] In the extraction of resources such as oil and gas, the phenomenon of pipe fittings jacking up during drilling and well workover operations is common and poses serious hazards. Pipe fittings jacking up can lead to damage to wellhead equipment, pipe fittings detachment, and even blowouts, causing not only huge economic losses but also serious threats to the lives of workers and the surrounding environment.

[0039] In related technologies, the blowout preventer (BOP) is usually used to hold the pipe fittings in place to prevent them from being pushed up. However, the main function of the BOP is to seal the wellhead and prevent the extracted resources from being ejected. Its effect on preventing the pipe fittings from being pushed up is relatively small and can only be effective in pressurized operations in low-pressure wells. This leads to the frequent occurrence of pipe fittings being pushed up.

[0040] Based on this, in order to improve the problem that the anti-overhead mechanism in related technologies has a limited effect in preventing pipe fittings from being overheaded and can only work in pressurized operations in low-pressure wells, the embodiments of this application provide the following solution.

[0041] Firstly, please refer to the following: Figure 1 and Figure 2 The anti-top-fall device provided in the embodiments of this application will now be described. The anti-top-fall device 100 includes a housing 10, a locking device 20, and a pushing device 30, wherein:

[0042] The housing 10 has a through cavity 1001 that runs through the opposite ends of the housing, and the through cavity 1001 is used for pipe fittings to pass through.

[0043] The locking device 20 is movably disposed within the cavity 1001. The locking device 20 includes an adjustable locking space 2001, which is used for inserting and locking the pipe fitting.

[0044] The pushing device 30 is disposed on the housing 10. The pushing device 30 is used to push the locking device 20 to adjust the size of the locking space 2001.

[0045] It is understood that the housing 10 can be a cylindrical structure with a regular or irregular shape. The size of the cavity 1001 matches the size of the wellhead. The locking device 20 can be a combination of an annular opening and closing structure surrounding the pipe fitting and a drive mechanism, or a combination of a scissor-type opening and closing structure and a drive mechanism, etc., but is not limited to these. The pushing device 30 can be moved by manual control, or it can be automatically driven by a driver, etc., but is not limited to these.

[0046] As can be seen from the above, the anti-uplift device 100 provided in this application embodiment, compared with the prior art, can achieve a fixing function simply by connecting the housing 10 to the blowout preventer, making installation convenient; the pipe is inserted into the cavity 1001, and the locking device 20 can move flexibly within the cavity 1001, precisely adjusting its own position according to the actual position and size of the pipe, thereby controlling the size of the locking space 2001 to achieve effective cooperation with the pipe, ensuring reliable anti-uplift function for pipes under different working conditions, that is, the operator can quickly activate the locking device 20 by pushing the device 30. Position adjustment and operation are performed without complicated installation steps and professional tools, significantly shortening the operation preparation time, improving the overall efficiency of drilling and well workover operations, and reducing labor and time costs. The combined structure of the shell 10 and the locking device 20 forms a stable anti-top-out system. That is, the shell 10 provides stable support and installation foundation for the locking device 20. When the pipe is subjected to an upward force, the locking device 20 can effectively disperse and transmit the force with the support of the shell 10, ensuring that the entire device can remain stable under complex working conditions and effectively preventing the pipe from being pushed up.

[0047] In some embodiments, please refer to the following: Figure 1 and Figure 2The locking device 20 includes a locking component 21 and a mating component 22. The mating component 22 includes at least two mating parts 221 arranged opposite each other, forming a mating space 22101 between each mating part 221. The locking component 21 includes at least two locking parts 211 arranged opposite each other, located within the mating space 22101, forming a locking space 2001 between each locking part 211. The outer wall of the locking part 211 is provided with a first inclined surface 21102, which is inclined from top to bottom outward along the central axis of the pipe. The inner wall of the mating component 221 is provided with a second inclined surface 22102, which is parallel to the opposite first inclined surface 21102 and is used to fit against the opposite first inclined surface 21102. The pushing device 30 is used to push the mating component 22 to adjust the size of the locking space 2001.

[0048] It is understood that both the latching element 211 and the mating element 221 can be block structures with regular or irregular shapes. The first inclined surface 21102 can be an inclined plane or an inclined curved surface, and the second inclined surface 22102 corresponds to the first inclined surface 21102. For example, when the first inclined surface 21102 is an inclined plane, the second inclined surface 22102 is also an inclined plane; when the first inclined surface 21102 is an inclined curved surface, the second inclined surface 22102 is also an inclined curved surface.

[0049] With this configuration, when the pushing device 30 pushes the mating assembly 22, each mating component 221 moves towards the pipe, and the mating space 22101 gradually decreases. Simultaneously, the movement of the mating components 221 pushes the locking assembly 21, causing the locking space 2001 to gradually shrink until the locking component 211 is tightly abutted against the pipe. During this process, due to the mutual contact and abutment of the first inclined surface 21102 and the second inclined surface 22102, a clamping force gradually increases from top to bottom. Moreover, the greater the upward force on the pipe, the greater the force exerted by the locking component 211 against the pipe, thus effectively preventing the pipe from rising and ensuring the stability and safety of the entire device during operation.

[0050] Optionally, please refer to Figure 1 and Figure 2 The mating part has a semi-circular groove 22102 on the side near the pipe, and the first inclined surface 21102 is the groove wall of the semi-circular groove 22102.

[0051] It is understandable that the curvature of the semi-circular groove 22102 matches the curvature of the pipe fitting. In this case, the first inclined surface 21102 is an inclined curved surface. The depth of the groove can be determined by the number of mating parts 221; the depth is greatest when there are two mating parts 221. The more mating parts 212 there are, the shallower the corresponding depth. The surface of the locking part 211 is slightly higher than the edge of the groove so that the locking part 211 can fully contact the pipe fitting, while the mating part 221 will not contact the pipe fitting.

[0052] With this design, the semi-circular groove 22102 can restrict the horizontal movement of the locking member 211. On the one hand, it ensures that the locking member 211 will not be affected by horizontal displacement when locking the pipe fitting, so that the locking member 211 always maintains good contact with the pipe fitting and stably plays the role of preventing upward push. On the other hand, the semi-circular groove 22102 forms a locking structure with the first inclined surface 21102 and the second inclined surface 22102, which can restrict the horizontal movement of the locking member 211, help concentrate the clamping force of the locking member 211 on the pipe fitting, avoid the dispersion of force, and thus more effectively resist the upward force of the pipe fitting, enhancing the reliability and stability of the entire anti-upward push device.

[0053] Optionally, please refer to Figure 1 and Figure 2 The side wall of the housing 10 has a through hole 1002. One end of the pushing device 30 is connected to the end of the mating part 221 away from the locking part 212, and the other end of the pushing device 30 passes through the through hole 1002 and extends to the outside of the housing 10.

[0054] It is understood that the through hole 1002 is a hole machined on the side wall of the housing 10, and its diameter is slightly larger than the outer diameter of the pushing device 30 to ensure that the pushing device 30 can pass through smoothly. At the same time, a sealing ring can be set on the inner wall of the through hole 1002 to prevent external impurities from entering the housing 10 and affecting the normal operation of the device.

[0055] With this configuration, a through hole 1002 is provided on the side wall of the housing 10, extending one end of the pushing device 30 to the outside of the housing 10, enabling convenient operation of the pushing device 30 from outside the housing 10. Operators can control the pushing device 30 through the operating components outside the housing 10 without entering its interior, greatly improving operational convenience and safety, and reducing operational difficulty and time. Simultaneously, this structural design facilitates maintenance and repair of the pushing device 30; when it malfunctions, it can be disassembled and replaced directly from outside the housing 10, reducing equipment maintenance costs.

[0056] Optionally, please refer to Figure 2 and Figure 3The inner wall of the housing 10 is also provided with a mounting groove 1003, which is connected to the through hole 1002; the mating part 221 includes a first state in which the end away from the pipe is located in the mounting groove 1003, and a second state in which it is close to the pipe and the locking part 211 abuts against the pipe and is away from the mounting groove 1003.

[0057] It can be understood that the mounting groove 1003 is a groove structure machined on the inner wall of the housing 10. Its shape and size are adapted to the shape of the end of the mating part 221 away from the pipe, providing storage and positioning space for the mating part 221. In the first state, the mating part 221 retracts under the action of the pushing device 30, so that the end away from the pipe enters the mounting groove 1003. At this time, the locking member 211 separates from the pipe, facilitating the lowering or lowering of the pipe. In the second state, the pushing device 30 pushes the mating part 221 outward, so that the end away from the pipe leaves the mounting groove 1003, causing the locking member 211 to abut against the pipe and apply a clamping force, thereby fixing the pipe.

[0058] With this configuration, a mounting groove 1003 is provided on the inner wall of the housing 10. When the pipe is lowered or raised, the mating part 221 is in the first state, and the mounting groove 1003 provides storage space for it, avoiding obstruction of the pipe's movement by the mating part 221 and ensuring that the pipe can pass smoothly through the cavity 1001, thus improving work efficiency. When it is necessary to fix the pipe, the mating part 221 is adjusted to the second state by the pushing device 30, so that the locking part 211 accurately abuts against the pipe, achieving quick and reliable fixing of the pipe.

[0059] Optionally, please refer to Figure 1 and Figure 2 The pushing device 30 includes a rotating member 31 and a pushing assembly 32.

[0060] The rotating member 31 passes through the through hole 1002 and is rotatably connected to the housing 10.

[0061] The push assembly 32 is movably connected to the rotating member 31, and the push assembly 32 and the rotating member 31 are threadedly engaged; the push assembly 32 is connected to the mating member 221.

[0062] It is understood that the rotating component 31 is typically a lead screw structure with threads machined on its surface. Its diameter and pitch are designed according to the required transmission precision and load-bearing capacity. By installing bearings and other components in the through hole 1002, the rotating component 31 can be rotatably connected to the housing 10 through the bearing mounting in the through hole 1002. This allows the rotating component 31 to remain stable during rotation, reducing friction and wobbling. The pushing assembly 32 is composed of a component with internal threads, which precisely match the external threads of the rotating component 31, ensuring a stable and reliable threaded transmission between them. One end of the pushing assembly 32 connecting to the mating component 221 will employ a robust connection method such as welding or bolting to ensure that no loosening occurs during the pushing process, ensuring that power can be effectively transmitted from the rotating component 31 to the mating component 221.

[0063] This design, utilizing the characteristics of the threaded connection, allows the pushing component 32 to move precisely in a straight line along the axial direction of the rotating component 31 when the rotating component 31 is rotated, based on the thread transmission principle. This precise transmission method allows operators to accurately control the position of the mating component 221 simply by rotating the rotating component 31, thereby achieving precise adjustment of the size of the locking space 2001. The self-locking function of the threaded transmission ensures that the pushing component 32 remains stably in its current position after the rotating component 31 stops rotating, effectively preventing accidental movement of the mating component 221 due to external interference, and greatly ensuring the stability and reliability of the anti-jacking device 100 in the locking state of the pipe fittings. Furthermore, this structural design is simple and easy to operate, requiring no complex operating procedures or specialized tools, lowering the technical threshold for operators and improving work efficiency.

[0064] Optionally, please refer to Figure 1 and Figure 2 A limiting groove 1004 is formed inside the through hole 1002 along the opening direction of the through hole 1002. The pushing assembly 32 includes a pushing member 321 and a transmission member 322, wherein:

[0065] The pusher 321 is located in the limiting groove 1004, and one end of the pusher 321 is connected to the mating part 221.

[0066] The transmission component 322 is connected to the end of the pusher 321 away from the mating component 221, and the transmission component 322 and the rotating component 31 are threadedly engaged.

[0067] It is understood that the limiting groove 1004 is a groove structure carefully machined along the opening direction on the inner wall of the through hole 1002. Its length, width, and depth are designed according to the size and motion requirements of the pusher 321. The pusher 321 is generally a rod-shaped structure, with dimensions that are closely fitted to the limiting groove 1004. It can slide smoothly within the limiting groove 1004, while being constrained by the limiting groove 1004 and can only move linearly along its direction. The end of the pusher 321 connected to the mating part 221 will have a suitable connection method selected according to the actual application scenario. For example, welding can ensure the firmness of the connection, while bolt connection facilitates later disassembly and maintenance. The transmission part 322 has an internal thread that matches the thread of the rotating part 31. It is connected to the end of the pusher 321 away from the mating part 221. The connection method must ensure that the two work closely together during transmission and that no relative displacement occurs. For example, the transmission part 322 can be a nut, and correspondingly, the rotating part 31 can be a lead screw.

[0068] This design ensures that the limiting groove 1004 provides precise guidance for the pushing component 321, allowing it to move linearly only along the direction of the limiting groove 1004. This effectively prevents instability such as offset, wobbling, or rotation of the pushing component 321 during movement. This guarantees the stability and precision of the mating component 221 during movement, ensuring that the locking component 211 accurately engages with the pipe, further enhancing the anti-overhead device's fixing effect on the pipe. Simultaneously, this structure prevents the rotating component 31 from shifting, significantly reducing the required pushing space.

[0069] Optionally, please refer to Figure 2 and Figure 3 The pusher 321 has an internal clearance space 32101, which allows the pusher 321 to be fitted around the rotating part through the clearance space 32101.

[0070] With this configuration, the rotating component 31 can be protected by the clearance space 32101, reducing the contamination or impact of the external environment on the protective component 31. At the same time, the clearance space 32101 further reduces the need for pushing space.

[0071] It should be noted that the structure of the locking device is not limited to the structure described above. In some other embodiments, the locking device includes a locking assembly 21, which includes at least two opposing locking members 211, with each locking member 211 forming a locking space 2001. The outer wall of the locking member 211 is provided with a first inclined surface 21102, which is inclined from top to bottom outward along the central axis of the pipe. The power output end of the pushing device 30 is provided with a third inclined surface, which is parallel to the opposing first inclined surface 21102 and is used to fit against the opposing first inclined surface 21102. The pushing device 30 is used to push the locking assembly 21 to adjust the size of the locking space 2001.

[0072] It is understood that the pushing device 30 can be any of the pushing devices 30 in the above embodiments. The difference is that the pushing member 321 of the pushing device 30 is provided with a third inclined surface at the end near the locking member 211. At this time, the power output end of the pushing device 30 is the end of the pushing member 321 near the locking member 211.

[0073] With this configuration, when the pushing device 30 pushes the locking assembly 21, the locking space 2001 gradually shrinks until the locking member 211 is tightly abutted against the pipe. During this process, due to the mutual contact and abutment between the first inclined surface 21102 and the third inclined surface, a clamping force that gradually increases from top to bottom is formed. The greater the upward force on the pipe, the greater the force exerted by the locking member 211 against the pipe, which can effectively prevent the pipe from rising.

[0074] Secondly, this application also provides a drilling and workover device, including the anti-overhead device 100 described in any of the above embodiments.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An anti-top-up device, characterized in that, The anti-top-lift device includes: The housing has an internal cavity extending through opposite ends of the housing, the cavity being used for the insertion of pipe fittings; A locking device, movably disposed within the cavity, includes an adjustable locking space for the pipe fitting to pass through and for locking the pipe fitting in place; and A pushing device is disposed on the housing and is used to push the locking device to adjust the size of the locking space; The locking device includes a locking component and a mating component. The mating component includes at least two mating members arranged opposite each other, and the mating members enclose a mating space. The locking component includes at least two locking members arranged opposite each other, and the locking members are located within the mating space. The locking members enclose the locking space. The outer wall of the latching component is provided with a first inclined surface, which is inclined downward from the central axis of the cavity toward the inner wall of the cavity; the inner wall of the mating component is provided with a second inclined surface, which is parallel to the opposite first inclined surface and is used to fit against the opposite first inclined surface; the pushing device is used to push the mating component to adjust the size of the latching space; The fitting has a semi-circular groove on the side near the pipe, the first inclined surface is the groove wall of the semi-circular groove, and the curvature of the semi-circular groove matches the curvature of the pipe.

2. The anti-overhead device as described in claim 1, characterized in that, The locking device includes a locking assembly, which includes at least two oppositely arranged locking members, and the locking members enclose the locking space between them. The outer wall of the locking component is provided with a first inclined surface, which is inclined downward from the central axis of the cavity toward the inner wall of the cavity. The power output end of the pushing device is provided with a third inclined surface, which is parallel to the opposite first inclined surface and is used to fit against the opposite first inclined surface. The pushing device is used to push the locking component to adjust the size of the locking space.

3. The anti-overhead device as described in claim 1, characterized in that, The side wall of the housing has a through hole, one end of the pushing device is connected to the end of the mating part away from the locking part, and the other end of the pushing device passes through the through hole and extends to the outside of the housing.

4. The anti-overhead device as described in claim 3, characterized in that, The inner wall of the housing is also provided with a mounting groove, which is connected to the through hole; the mating part includes a first state in which one end away from the pipe is located in the mounting groove, and a second state in which it is close to the pipe and the locking part abuts against the pipe and away from the mounting groove.

5. The anti-overhead device as described in claim 3, characterized in that, The propulsion device includes: A rotating component, the rotating component passing through the through hole, the rotating component being rotatably connected to the housing; and A pushing component is movably connected to the rotating member, and the pushing component and the rotating member are threadedly engaged; the pushing component is connected to the mating member.

6. The anti-overhead device as described in claim 5, characterized in that, A limiting groove is formed within the through hole along the direction of the hole opening; the pushing component includes: A pusher, wherein the pusher is located within the limiting groove, and one end of the pusher is connected to the mating member; and A transmission component is connected to the end of the pushing component away from the mating component, and the transmission component and the rotating component are threadedly engaged.

7. The anti-overhead device as described in claim 6, characterized in that, The pusher has an internal clearance space, through which it can be fitted around the rotating component.

8. A drilling and workover device, characterized in that, Includes the anti-top-up device as described in any one of claims 1 to 7.

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