Casing pipe unfreezing device

Abstract

The utility model relates to the technical field of oil drilling equipment, and discloses a casing pipe unfreezing device which comprises an outer shell, limiting grooves are formed in the left side and the right side of the lower portion of the outer shell, limiting plates are slidably connected into the limiting grooves, and clamping assemblies are arranged on the lower portions of the sides, away from each other, of the limiting plates and used for clamping a casing pipe. A bidirectional threaded rod is rotationally connected to the middle of the inner wall of the outer shell, a first bevel gear is fixedly connected to the outer side of the bidirectional threaded rod, and a driving assembly is arranged in the middle of the upper portion of the outer shell and used for driving the first bevel gear. According to the casing pipe unfreezing device, through rotation of the lifting lug, the motor, the second bevel gear and the two-way threaded rod, cooperation of the two-way threaded rod, the limiting plate, the connecting plate, the clamping block, anti-skid particles and other structures, and finally, the casing pipe is driven to rotate through the lifting lug rotating device, and unfreezing operation can be conducted on casing pipes of different models through the casing pipe unfreezing device; and the applicability of the casing pipe unfreezing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling equipment, in particular to a casing jam-releasing device. Background Art

[0002] Casing is a steel pipe used to support the wellbore of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. Each well uses several layers of casing according to different drilling depths and geological conditions. After the casing is lowered into the well, cement is used. Unlike oil pipes and drill pipes, it cannot be reused and is a disposable consumable material. During the drilling process, the casing may become stuck due to excessive friction between the casing and the wellbore wall, or due to damage to the casing, which makes it unable to move freely. Therefore, a casing release device is needed.

[0003] In the prior art, a casing jamming release device is provided with a matching jamming release pipe which is welded vertically through the lower end of a through hole opened at the bottom of the guide pipe, thereby solving the problems of insufficient jamming effect and low sealing of the casing jamming release device in the prior art. However, it is often unable to perform jamming operations on casings of different models, and the applicability of the casing jamming release device is low. Utility Model Content

[0004] In order to make up for the above shortcomings, the present invention provides a casing jamming release device, which aims to improve the problem in the prior art that the casing jamming release device cannot be operated on casings of different models and has low applicability.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a casing unblocking device, comprising an outer shell, wherein limit grooves are provided on both sides of the lower left and right sides of the outer shell, and the limit plates are slidably connected inside the limit grooves, and the lower part of the side away from the limit plates is provided with a clamping assembly for clamping the casing, a bidirectional threaded rod is rotatably connected to the middle part of the inner wall of the outer shell, a first bevel gear is fixedly connected to the outer side of the bidirectional threaded rod, and a driving assembly is provided in the upper middle part of the outer shell for driving the first bevel gear.

[0006] As a further description of the above technical solution:

[0007] The clamping assembly includes a connecting plate, which is fixedly connected to the lower part of the side away from the limit plate. The side away from the connecting plate is fixedly connected with a clamping block, and the side away from the clamping block is evenly fixedly connected with a plurality of anti-slip particles.

[0008] As a further description of the above technical solution:

[0009] The driving assembly includes a motor, which is fixedly connected to the middle portion of the outer shell, and an output end of the motor is fixedly connected to a second bevel gear.

[0010] As a further description of the above technical solution:

[0011] The limit plate is threadedly connected to the left and right sides of the outside of the bidirectional threaded rod, and the left and right sides of the upper part of the outer shell are fixedly connected with lifting ears.

[0012] As a further description of the above technical solution:

[0013] The anti-slip particles are made of polyurethane.

[0014] As a further description of the above technical solution:

[0015] The output end of the motor passes through the outer shell, and the second bevel gear is rotatably connected to the top of the outer shell.

[0016] As a further description of the above technical solution:

[0017] The second bevel gear is meshed with the first bevel gear.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the device is lifted to the inside of the casing by the lifting ear, the starting motor drives the second bevel gear to rotate, the second bevel gear drives the bidirectional threaded rod to rotate, the bidirectional threaded rod drives the limit plate to move, the limit plate drives the connecting plate to move, the connecting plate drives the clamping block to move, the anti-skid particles on the outside of the clamping block abut against the inner wall of the casing, and finally the casing is driven to rotate by the lifting ear rotating device, so that the casing unblocking device can be used to unblock casings of different models, thereby improving the applicability of the casing unblocking device.

[0020] 2. In the present invention, by adopting anti-skid particles made of polyurethane, the anti-skid performance of polyurethane can effectively increase the friction between the clamping block and the surface of the sleeve, thereby ensuring that the sleeve can be firmly grasped during clamping to prevent sliding or loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of the casing jam-releasing device proposed in the present invention;

[0022] Figure 2 This is a cross-sectional view of the outer shell of the casing unjamming device proposed in the utility model;

[0023] Figure 3 for Figure 1 A in the enlarged view.

[0024] Legend:

[0025] 1. Outer shell; 2. Lifting ear; 3. Limiting groove; 4. Limiting plate; 5. Bidirectional threaded rod; 6. First bevel gear; 7. Motor; 8. Second bevel gear; 9. Connecting plate; 10. Clamping block; 11. Anti-slip particles. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figure 1-Figure 3 , the utility model provides an embodiment: a casing unblocking device, including an outer shell 1, a limit groove 3 is provided on both sides of the lower part of the outer shell 1, a limit plate 4 is slidably connected inside the limit groove 3, and a clamping component is provided on the lower part of the side away from the limit plate 4 for clamping the casing, and the clamping component includes a connecting plate 9, which is fixedly connected to the lower part of the side away from the limit plate 4, and a clamping block 10 is fixedly connected to the side away from the connecting plate 9, and a plurality of anti-slip particles 11 are evenly fixedly connected to the side away from the clamping block 10, and the outer shell 1 A bidirectional threaded rod 5 is rotatably connected to the middle part of the inner wall, and a limit plate 4 is threadedly connected to the left and right sides of the outside of the bidirectional threaded rod 5. A first bevel gear 6 is fixedly connected to the outside of the bidirectional threaded rod 5. A driving assembly is provided in the middle part of the outer shell 1 for driving the first bevel gear 6. The driving assembly includes a motor 7, which is fixedly connected to the middle part of the outer shell 1. The output end of the motor 7 is fixedly connected to the second bevel gear 8. The output end of the motor 7 passes through the outer shell 1. The second bevel gear 8 is rotatably connected to the top inside the outer shell 1, and the second bevel gear 8 is meshed with the first bevel gear 6.

[0028] After the first gear 8 is unlocked, the second gear 8 is unlocked, and the second gear 8 is unlocked, and the second gear 8 is unlocked. After the first gear 8 is unlocked, the second gear 8 is unlocked, and the second gear 8 is unlocked. After the first gear 8 is unlocked, the second gear 8 is unlocked, and the second gear 8 is unlocked. After the first gear 8 is unlocked, the second gear 8 is unlocked, and the second gear 8 is unlocked.

[0029] Reference Figure 1-Figure 3 The left and right sides of the upper portion of the outer shell 1 are fixedly connected with lifting ears 2, which are connected to the lifting equipment through the lifting ears 2, and the anti-slip particles 11 are made of polyurethane.

[0030] Through the effective operation of the lifting equipment, the lifting ear 2 is driven to rotate, thereby causing the sleeve to rotate accordingly. In order to ensure that no slipping or loosening occurs during the clamping process, anti-slip particles 11 are provided on the surface of the clamping block 10. These particles are made of polyurethane, and their excellent anti-slip properties can effectively enhance the friction between the clamping block 10 and the surface of the sleeve. It is precisely because of the high friction coefficient of polyurethane that the clamping block 10 can firmly grasp the surface of the sleeve when clamping it, providing a strong clamping force. This design not only improves the stability of the clamping, but also provides reliable support for the entire unblocking operation, thereby ensuring the efficiency and safety of the equipment during operation.

[0031] Working principle: When the casing needs to be released, the device is lifted to the inside of the casing through the lifting ear 2, and the starting motor 7 is controlled to make the motor 7 run and drive the second bevel gear 8 to rotate, and the second bevel gear 8 drives the bidirectional threaded rod 5 to rotate, and the bidirectional threaded rod 5 drives the limit plate 4 to move inside the limit groove 3, and the limit plate 4 drives the connecting plate 9 to move, and the connecting plate 9 drives the clamping block 10 to move, and the anti-slip particles 11 on the outside of the clamping block 10 abut against the inner wall of the casing, and finally the casing is driven to rotate by the lifting ear 2 rotating device, thereby realizing that the casing release device can release casings of different types, thereby improving the applicability of the casing release device.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A casing unblocking device, comprising an outer shell (1), characterized in that: Limiting grooves (3) are provided on both left and right sides of the lower portion of the outer shell (1); limiting plates (4) are slidably connected to the inner portions of the limiting grooves (3); a clamping assembly is provided on the lower portion of the side away from the limiting plates (4) for clamping the sleeve; a bidirectional threaded rod (5) is rotatably connected to the middle portion of the inner wall of the outer shell (1); a first bevel gear (6) is fixedly connected to the outer side of the bidirectional threaded rod (5); and a driving assembly is provided on the upper middle portion of the outer shell (1) for driving the first bevel gear (6).

2. The casing unjamming device according to claim 1, characterized in that: The clamping assembly comprises a connecting plate (9), the connecting plate (9) being fixedly connected to the lower portion of the side away from the limiting plate (4), the side away from the connecting plate (9) being fixedly connected to a clamping block (10), and the side away from the clamping block (10) being evenly fixedly connected to a plurality of anti-slip particles (11).

3. The casing unjamming device according to claim 1, characterized in that: The drive assembly comprises a motor (7), the motor (7) being fixedly connected to the upper middle portion of the outer shell (1), and the output end of the motor (7) being fixedly connected to a second bevel gear (8).

4. The casing unjamming device according to claim 1, characterized in that: The limit plate (4) is threadedly connected to the left and right sides of the exterior of the bidirectional threaded rod (5), and the left and right sides of the upper portion of the outer shell (1) are fixedly connected with lifting ears (2).

5. The casing unjamming device according to claim 2, characterized in that: The anti-slip particles (11) are made of polyurethane.

6. The casing jam release device according to claim 3, characterized in that: The output end of the motor (7) passes through the outer shell (1), and the second bevel gear (8) is rotatably connected to the top of the outer shell (1).

7. The casing jam release device according to claim 3, characterized in that: The second bevel gear (8) is meshed with the first bevel gear (6).

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