Large-load casing suspension device

Abstract

The utility model relates to the technical field of large-load casing suspension, in particular to a large-load casing suspension device which comprises two slip boxes and a plurality of slip bodies, a limiting structure is arranged on the surface of each slip body and comprises a plurality of circular grooves, the circular grooves are formed in the two sides of the slip bodies respectively, and the slip bodies are arranged in the circular grooves. A first spring is fixedly connected to the inner wall of the circular groove, a circular plate is fixedly connected to the other end of the first spring, a frame is fixedly connected to the surface of the circular plate, a plug pin slidably penetrates through the surface of the frame, connecting blocks are inserted into the inner wall of the frame, and a steel wire rope is fixedly connected to the sides, close to each other, of the two connecting blocks. A limiting hole is formed in the surface of the connecting block, the size of the plug pin is matched with the size of the limiting hole, and the arc face of the plug pin is sleeved with a second spring. According to the utility model, the problem that the slip is inconvenient to limit on the surface of the pipe sleeve in advance is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-load casing hanging, in particular to a large-load casing hanging device. Background Technique

[0002] Casing hanging is an important link in oil and gas drilling operations. It mainly refers to fixing the drilling casing at the wellhead to keep it stable in the well. The commonly used casing hanger is composed of a slip box and slips, etc. The design of the large back angle of the slip teeth on the surface of the slips enhances the hanging load of the slip teeth, enabling the load to reach a bearing capacity of 300T.

[0003] The above and existing technologies have the following defects: Since multiple slips need to be used to operate the hanging casing, when using the slips to hang the casing, it is inconvenient to limit the slips on the surface of the casing in advance. When the slips enter the slip box, the position is likely to shift or fall off, which may lead to uneven support of the upper casing, thus causing structural instability and increasing the risk in subsequent operations.

[0004] Therefore, a large-load casing hanging device is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to solve the defect of inconveniently limiting the slips on the surface of the casing in advance, and a large-load casing hanging device is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A large-load casing hanging device includes two slip boxes and several slip bodies. A limiting structure is arranged on the surface of the slip body. The limiting structure includes several circular grooves, and the several circular grooves are respectively opened on both sides of the slip body. A first spring is fixedly connected to the inner wall of the circular groove, and the other end of the first spring is fixedly connected to a circular plate. A frame is fixedly connected to the surface of the circular plate. A pin penetrates through the surface of the frame in a sliding manner. A connecting block is inserted into the inner wall of the frame. A steel wire rope is fixedly connected to one side of the two connecting blocks close to each other. A limiting hole is opened on the surface of the connecting block, and the size of the pin is adapted to the size of the limiting hole.

[0007] The effects achieved by the above components are as follows: By setting the limiting structure, it is convenient to sleeved the slip body on the surface of the casing before passing the casing through the slip box, which can effectively prevent the slips from falling off or shifting during the process of lifting or lowering the casing, thereby reducing the risk in the operation process and ensuring the safety of on-site workers.

[0008] Preferably, a second spring is sleeved on the arc surface of the pin, and both ends of the second spring are fixedly connected to the pin and the frame respectively.

[0009] The effects achieved by the above components are as follows: When the bolt moves, the second spring will be stretched, and the spring can improve the stability of the bolt limit connection block, preventing the bolt from falling out of the limit hole due to shaking.

[0010] Preferably, two rectangular holes are formed on the surface of the circular plate, and a baffle plate slides through the inner wall of the rectangular hole.

[0011] The effects achieved by the above components are as follows: After the circular plate is removed from the circular groove, push the baffle plate. The baffle plate will slide in the rectangular hole when it moves. When the baffle plate moves to a suitable position, it will fit on the surface of the slip joint body. The baffle plate can limit the position of the circular plate, preventing the circular plate from entering the circular groove, thus facilitating the removal of the wire rope.

[0012] Preferably, a positioning rod is fixedly connected to the side of the circular plate away from the frame, and a rubber block is fixedly connected to the end of the positioning rod away from the circular plate.

[0013] The effects achieved by the above components are as follows: The positioning rod on the surface of the circular plate can limit the movement path of the circular plate, thus preventing the first spring from being damaged due to excessive contraction. The rubber block can prevent the positioning rod from colliding with the inner wall of the circular groove and being damaged.

[0014] Preferably, a positioning structure is provided on the surface of the slip joint box. The positioning structure includes an arc track, which is fixedly connected to the arc surface of the slip joint box. A number of circular holes are formed on the surface of the arc track. A positioning plate is slidably connected to the inner wall of the arc track. A lead screw is rotatably connected to the surface of the positioning plate. A drive plate is threadedly connected to the surface of the lead screw, and a limit rod is fixedly connected to the side of the drive plate close to the arc track.

[0015] The effects achieved by the above components are as follows: By setting the positioning structure, it is convenient to position the slip joint box and adjust the position of the positioning plate, thus further facilitating the positioning of the slip joint box and preventing the slip joint box from shifting during use.

[0016] Preferably, an arc-shaped round rod slidably penetrates through the surface of the positioning plate, and both ends of the arc-shaped round rod are fixedly connected to the inner wall of the arc track.

[0017] The effects achieved by the above components are as follows: The positioning plate will also slide along the arc surface of the arc-shaped round rod. The arc-shaped round rod can limit the movement path of the positioning plate, thus preventing the positioning plate from falling out of the arc track when it moves.

[0018] Preferably, a turntable is fixedly connected to the end of the lead screw away from the positioning plate, and the cross section of the turntable is in the shape of a "plus" sign.

[0019] The effects achieved by the above components are as follows: The rotation of the turntable will drive the rotation of the lead screw, and the turntable is convenient for rotating the lead screw.

[0020] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0021] 1. In the present utility model, by setting a limiting structure, the slip body is pulled in a direction away from each other. When the slip body moves, the wire rope will be disengaged from the circular groove. When the slip body moves, the first spring will be stretched. When the slip body moves to a suitable position, the circular plate will move out of the circular groove, and then the slip body is sleeved on the surface of the pipe sleeve. By sleeving the slip body on the surface of the pipe sleeve before passing the pipe sleeve through the slip box, it can effectively prevent the slip from falling off or shifting during the process of lifting or lowering the pipe sleeve, thereby reducing the risk during the operation process and ensuring the safety of on-site staff.

[0022] 2. In the present utility model, by setting a positioning structure, the positioning plate is pulled. The positioning plate will slide in the arc-shaped track. When the positioning plate moves to a suitable position, the lead screw is rotated. The rotation of the lead screw will drive the driving plate to move, and the driving plate will drive the limiting rod to insert into the circular hole, thereby limiting the position of the adjusted positioning plate. By adjusting the position of the positioning plate, the practicality of the positioning structure is improved, and the effect of preventing the slip box from shifting during use is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 is a schematic diagram of the partial structure of the present utility model;

[0025] Figure 3 is a schematic diagram of the structure at the limiting structure of the present utility model;

[0026] Figure 4 is a schematic diagram of the structure at the wire rope of the present utility model;

[0027] Figure 5 is a schematic diagram of the structure at the circular plate of the present utility model;

[0028] Figure 6 is a schematic diagram of the structure at the positioning structure of the present utility model.

[0029] Legend: 1. Slip box; 2. Slip body; 3. Limiting structure; 301. Circular groove; 302. First spring; 303. Circular plate; 304. Frame; 305. Plug; 306. Connecting block; 307. Limiting hole; 308. Wire rope; 309. Second spring; 310. Rectangular hole; 311. Baffle; 312. Positioning rod; 313. Rubber block; 4. Positioning structure; 41. Arc-shaped track; 42. Circular hole; 43. Positioning plate; 44. Lead screw; 45. Driving plate; 46. Limiting rod; 47. Arc-shaped round rod; 48. Turntable. Detailed implementation manners

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0031] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0032] As Figure 1 - Figure 2 As shown, the present utility model provides a large-load casing hanging device, which includes two slip boxes 1 and a plurality of slip bodies 2. A limiting structure 3 is provided on the surface of the slip body 2. By providing the limiting structure 3, it is convenient to sleeved the slip body 2 on the surface of the casing before passing the casing through the slip box 1, which can effectively prevent the slip from falling off or shifting during the process of lifting or lowering the casing, thereby reducing the risk during the operation process and ensuring the safety of on-site staff. A positioning structure 4 is provided on the surface of the slip box 1. By providing the positioning structure 4, it is convenient to position the slip box 1, adjust the position of the positioning plate 43, so as to further facilitate the positioning of the slip box 1 and avoid the slip box 1 from shifting during use.

[0033] The following specifically describes the specific settings and functions of its limiting structure 3 and positioning structure 4.

[0034] As Figure 3 - Figure 5As shown, the limit structure 3 includes a number of circular grooves 301, and a number of circular grooves 301 are respectively opened on both sides of the slip body 2. The inner wall of the circular groove 301 is fixedly connected with a first spring 302, and the other end of the first spring 302 is fixedly connected with a circular plate 303. The surface of the circular plate 303 is fixedly connected with a frame 304. A latch 305 slidably penetrates through the surface of the frame 304. A connecting block 306 is inserted into the inner wall of the frame 304. A steel wire rope 308 is fixedly connected to one side of the two connecting blocks 306 close to each other. A limit hole 307 is opened on the surface of the connecting block 306, and the size of the latch 305 is adapted to the size of the limit hole 307. A second spring 309 is sleeved on the arc surface of the latch 305, and both ends of the second spring 309 are fixedly connected with the latch 305 and the frame 304 respectively. When the latch 305 moves, the second spring 309 will be stretched, and the spring plays a role in improving the stability of the latch 305 limiting the connecting block 306 and preventing the latch 305 from slipping out of the limit hole 307 due to shaking. Two rectangular holes 310 are opened on the surface of the circular plate 303, and a baffle 311 slidably penetrates through the inner wall of the rectangular hole 310. After the circular plate 303 is disengaged from the circular groove 301, the baffle 311 is pushed. The baffle 311 will slide in the rectangular hole 310 when it moves. When the baffle 311 moves to a suitable position, the baffle 311 will fit on the surface of the slip body 2, and the baffle 311 reaches the position of restricting the circular plate 303 and preventing the circular plate 303 from entering the circular groove 301, so as to facilitate the removal of the steel wire rope 308. A positioning rod 312 is fixedly connected to one side of the circular plate 303 away from the frame 304, and a rubber block 313 is fixedly connected to one end of the positioning rod 312 away from the circular plate 303. The positioning rod 312 on the surface of the circular plate 303 reaches the role of restricting the movement path of the circular plate 303, so as to prevent the first spring 302 from being damaged due to excessive contraction, and the rubber block 313 reaches the role of preventing the positioning rod 312 from colliding with the inner wall of the circular groove 301 and causing damage.

[0035] As Figure 6As shown in the figure, the positioning structure 4 includes an arc-shaped track 41. The arc-shaped track 41 is fixedly connected to the arc surface of the slip bowl 1. A number of round holes 42 are formed on the surface of the arc-shaped track 41. A positioning plate 43 is slidably connected to the inner wall of the arc-shaped track 41. A lead screw 44 is rotatably connected to the surface of the positioning plate 43. A driving plate 45 is threadedly connected to the surface of the lead screw 44. A limiting rod 46 is fixedly connected to the side of the driving plate 45 close to the arc-shaped track 41. An arc-shaped round rod 47 slidably penetrates through the surface of the positioning plate 43. Both ends of the arc-shaped round rod 47 are fixedly connected to the inner wall of the arc-shaped track 41. The positioning plate 43 also slides along the arc surface of the arc-shaped round rod 47. The arc-shaped round rod 47 restricts the movement path of the positioning plate 43, thereby preventing the positioning plate 43 from slipping out of the arc-shaped track 41 during movement. One end of the lead screw 44 away from the positioning plate 43 is fixedly connected to a turntable 48. The cross-section of the turntable 48 is in the shape of a "plus" sign. Rotating the turntable 48 drives the lead screw 44 to rotate. The turntable 48 facilitates the rotation of the lead screw 44.

[0036] The overall working principle is as follows. When the slip body 2 needs to be installed on the surface of the sleeve first, first pull the slip body 2 in the direction away from each other. When the slip body 2 moves, the wire rope 308 will be disengaged from the round groove 301. When the slip body 2 moves, the first spring 302 will be stretched. When the slip body 2 moves to a suitable position, the round plate 303 will move out of the round groove 301. Then, the slip body 2 is sleeved on the surface of the sleeve. Release the slip body 2, and the slip body 2 will tightly fit on the surface of the sleeve by virtue of the contraction force of the first spring 302. At this time, the round plate 303 will drive the wire rope 308 to slide into the round groove 301 by virtue of the contraction force of the first spring 302. The positioning rod 312 on the surface of the round plate 303 restricts the movement path of the round plate 303, thereby preventing the first spring 302 from being damaged due to excessive contraction. At this time, the sleeve is passed through the slip bowl 1, and the sleeve will drive the slip body 2 to be clamped into the slip bowl 1, thereby suspending the sleeve. When the slip body 2 needs to be removed and placed separately, first pull the slip body 2 in the direction away from each other. When the round plate 303 is disengaged from the round groove 301, push the baffle 311. The baffle 311 will slide in the rectangular hole 310 when it moves. When the baffle 311 moves to a suitable position, the baffle 311 will fit on the surface of the slip body 2. The baffle 311 restricts the position of the round plate 303, preventing the round plate 303 from entering the round groove 301, thereby facilitating the removal of the wire rope 308. Then, pull the pin 305. The pin 305 will slide in the frame 304 and gradually disengage from the limit hole 307 when it moves. The second spring 309 will be stretched when the pin 305 moves. When the pin 305 is disengaged from the positioning hole, it is convenient to remove the connecting block 306 from the frame 304, and further facilitate the removal of the wire rope 308 connecting the slip body 2.

[0037] When it is necessary to position the slip box 1, first rotate the turntable 48. The rotation of the turntable 48 will drive the rotation of the lead screw 44. The rotation of the lead screw 44 will drive the movement of the driving plate 45 by means of the thread. The movement of the driving plate 45 will drive the movement of the limiting rod 46. When the limiting rod 46 moves, it will gradually disengage from the round hole 42. When the limiting rod 46 is completely disengaged, pull the positioning plate 43. The positioning plate 43 will slide in the arc track 41 and also slide along the arc surface of the arc-shaped round rod 47. The arc-shaped round rod 47 limits the movement path of the positioning plate 43, thus preventing the positioning plate 43 from disengaging from the arc track 41 during movement. When the positioning plate 43 moves to a suitable position, rotate the turntable 48. The lead screw 44 will drive the movement of the driving plate 45 by means of the rotation of the turntable 48. The driving plate 45 will drive the limiting rod 46 to insert into the round hole 42, thereby limiting the position of the adjusted positioning plate 43. By adjusting the position of the positioning plate 43, the practicability of the positioning structure 4 is improved.

[0038] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A large-load casing hanger device, comprising two slip boxes (1) and a plurality of slip bodies (2), wherein a limiting structure (3) is arranged on the surface of the slip body (2), and is characterized in that: The limiting structure (3) includes a number of circular grooves (301), and a number of the circular grooves (301) are respectively formed on both sides of the slip body (2). A first spring (302) is fixedly connected to the inner wall of the circular groove (301), and the other end of the first spring (302) is fixedly connected to a circular plate (303). A frame (304) is fixedly connected to the surface of the circular plate (303). A pin (305) slidably penetrates through the surface of the frame (304). A connecting block (306) is inserted into the inner wall of the frame (304). A steel wire rope (308) is fixedly connected to one side of the two connecting blocks (306) close to each other. A limiting hole (307) is formed on the surface of the connecting block (306). The size of the pin (305) is adapted to the size of the limiting hole (307).

2. The large-load casing hanging device according to claim 1, wherein: A second spring (309) is sleeved on the arc surface of the pin (305), and both ends of the second spring (309) are fixedly connected to the pin (305) and the frame (304) respectively.

3. The large-load casing hanging device according to claim 1, characterized in that: Two rectangular holes (310) are formed on the surface of the circular plate (303), and a baffle (311) slidably penetrates through the inner wall of the rectangular hole (310).

4. The large-load casing hanging device according to claim 3, characterized in that: A positioning rod (312) is fixedly connected to the side of the circular plate (303) away from the frame (304), and a rubber block (313) is fixedly connected to the end of the positioning rod (312) away from the circular plate (303).

5. A large-load casing hanging device according to claim 1, characterized in that: A positioning structure (4) is provided on the surface of the slip box (1). The positioning structure (4) includes an arc track (41), and the arc track (41) is fixedly connected to the arc surface of the slip box (1). A number of circular holes (42) are formed on the surface of the arc track (41). A positioning plate (43) is slidably connected to the inner wall of the arc track (41). A lead screw (44) is rotatably connected to the surface of the positioning plate (43). A drive plate (45) is threadedly connected to the surface of the lead screw (44). A limiting rod (46) is fixedly connected to the side of the drive plate (45) close to the arc track (41).

6. The large-load casing hanger device according to claim 5, characterized in that: An arc-shaped round rod (47) slidably penetrates through the surface of the positioning plate (43), and both ends of the arc-shaped round rod (47) are fixedly connected to the inner wall of the arc track (41).

7. A large-load casing hanging device according to claim 5, characterized in that: A turntable (48) is fixedly connected to the end of the lead screw (44) away from the positioning plate (43), and the cross section of the turntable (48) is in the shape of a "plus" sign.

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