Anti-locking tubing anchor

Abstract

The utility model discloses an anti-locking tubing anchor, and belongs to the field of tubing anchors, the anti-locking tubing anchor comprises a sleeve, the sleeve is provided with a supporting device, the supporting device comprises a connecting block, the connecting block is fixedly connected to the inner wall of the sleeve, the inner wall of the connecting block is fixedly connected with a fixing block, the bottom of the fixing block is rotatably connected with a lead screw through a bearing, and the lead screw is fixedly connected with the connecting block. A movable rod is in threaded connection with the outer wall of the lead screw, a supporting rod is hinged to the right side of the movable rod, a sliding groove is formed in the bottom of the connecting block, a fixed rod is fixedly connected to the inner wall of the sliding groove, and a limiting rod is hinged to the right side of the fixed rod. The output end of the motor drives the rubber block on the right side of the supporting rod to touch the well wall, so that the supporting purpose is achieved, the operation reliability and efficiency are improved, it is ensured that the supporting rod can be stably fixed to the well wall when necessary, the fixing effect is improved, and the problems that in the background technology, the surface of a rubber barrel is smooth, and the service life is short are solved. And the fixing effect on the anchor pipe is reduced.

Description

Technical Field

[0001] The present application relates to the field of tubing anchors, and more particularly, to an anti-jamming tubing anchor. Background Art

[0002] A tubing anchor is a downhole device used for anchoring downhole strings in production and workover wells. It can improve the stress state of the string, reduce fatigue damage of the string, control the expansion and contraction of the string, reduce leakage, extend the service life of the string. During the production process of rod pumping, it can fix the string to reduce stroke loss and improve pump efficiency. During processes such as fracturing and acidizing, it can fix the string to improve the pressure-bearing capacity of downhole tools and strings. It can also be designed as a mechanism on other downhole tools to play its role.

[0003] In the prior art, the surface of the rubber barrel is smooth, resulting in a decrease in the fixing effect on the anchor pipe. The unstable fixing of the anchor pipe may increase safety risks. For example, accidental movement or out-of-control of the tubing or drill pipe may cause equipment damage, production interruption, or environmental pollution. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present utility model provides an anti-jamming tubing anchor to solve the problems raised in the above background art. To achieve the above objectives, the present utility model is realized through the following technical solutions: An anti-jamming tubing anchor includes a casing, and a support device is provided on the casing. The support device includes a connecting block fixedly connected to the inner wall of the casing. A fixing block is fixedly connected to the inner wall of the connecting block. A lead screw is rotatably connected to the bottom of the fixing block through a bearing. A moving rod is threadedly connected to the outer wall of the lead screw. A support rod is hinged to the right side of the moving rod. A chute is opened at the bottom of the connecting block. A fixing rod is fixedly connected to the inner wall of the chute. A limiting rod is hinged to the right side of the fixing rod. The limiting rod is cast in an integrated manner, which improves the integrity, has no interfaces inside, eliminates the weakness problems at the interfaces, does not require assembly, can be directly installed, is convenient for production, manufacturing and maintenance, reduces the number of parts and steps in the assembly process, reduces the assembly cost and time, reduces the connection points and joints, reduces the risk of loosening or malfunction between parts, enhances the structural strength and stability of the overall component, and improves the long-term service life of the product.

[0005] Preferably, the right side of the limiting rod is hinged to the right side of the support rod. A rubber block is fixedly connected to the right side of the support rod. A fixing column is fixedly connected to the front inner wall of the support rod.

[0006] Preferably, a motor is fixedly connected to the top of the fixing block. The lead screw movably passes through the fixing block and extends towards the bottom. The output end of the motor is fixedly connected to the extended end of the lead screw.

[0007] Preferably, there are three support rods in total.

[0008] Preferably, an extension mechanism is provided on the casing. The extension mechanism includes a sleeve, which is arranged on the inner wall of the casing, and the outer wall of the sleeve is provided with thread lines.

[0009] Preferably, the sleeve is threadedly connected to the inner wall of the casing. The sleeve is cast in an integrated manner, which improves the integrity, has no interfaces inside, does not have the weakness problems at the interfaces, does not require assembly, and can be directly installed, facilitating production, manufacturing and maintenance. It reduces the number of parts and steps in the assembly process, reduces the assembly cost and time, reduces the connection points and joints, reduces the risk of loosening or failure between parts, enhances the structural strength and stability of the overall component, and improves the long-term service life of the product.

[0010] The advantages of this application are as follows:

[0011] First, by setting the support device in this application, the rubber block on the right side of the support rod is driven by the output end of the motor to touch the well wall, so as to achieve the purpose of support, improve the reliability and efficiency of the operation, ensure that the support rod can be firmly fixed on the well wall when necessary, thus improving the fixing effect, and solving the problem that the surface of the rubber bucket is smooth and the fixing effect on the anchor pipe is reduced as proposed in the background technology.

[0012] Second, by setting the extension mechanism in this application, when the sleeve is twisted, the sleeve rotates and rises from the inner wall of the casing by relying on the thread lines, so as to extend, realizing the control of the length change of the sleeve by twisting the sleeve, and thus achieving the extension effect. This design provides flexibility and convenience in adjusting the length. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the right-side structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the front sectional structure of the present utility model;

[0017] Figure 4 is the present utility model Figure 2 The enlarged structure diagram at A in.

[0018] In the above figures,

[0019] 1. Casing; 2. Support device; 21. Connecting block; 22. Fixed block; 23. Motor; 24. Lead screw; 25. Moving rod; 26. Support rod; 27. Fixed rod; 28. Limiting rod; 29. Rubber block; 210. Chute; 211. Fixed column; 3. Extension mechanism; 31. Sleeve; 32. Thread line. Detailed implementation manners

[0020] In order to enable those skilled in the art of the present technology to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0021] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments. Embodiment

[0022] Refer to Figures 1-4 , this embodiment provides an anti-jamming tubing anchor, including a casing 1, on which a support device 2 is provided. The support device 2 includes a connecting block 21, the connecting block 21 is fixedly connected to the inner wall of the casing 1, a fixed block 22 is fixedly connected to the inner wall of the connecting block 21, the bottom of the fixed block 22 is rotatably connected to a lead screw 24 through a bearing, a moving rod 25 is threadedly connected to the outer wall of the lead screw 24, the right side of the moving rod 25 is hinged to a support rod 26, a chute 210 is opened at the bottom of the connecting block 21, a fixed rod 27 is fixedly connected to the inner wall of the chute 210, the right side of the fixed rod 27 is hinged to a limiting rod 28. The limiting rod 28 is cast in an integrated manner, which improves the integrity, has no interfaces inside, does not have the weakness problems at the interfaces, does not require assembly, can be directly installed, is convenient for production, manufacturing and maintenance, reduces the number and steps of parts in the assembly process, reduces the assembly cost and time, reduces the connection points and joints, reduces the risk of loosening or failure between parts, enhances the structural strength and stability of the overall component, and improves the long-term service life of the product. The right side of the limiting rod 28 is hinged to the right side of the support rod 26, a rubber block 29 is fixedly connected to the right side of the support rod 26, and a fixed column 211 is fixedly connected to the front of the inner wall of the support rod 26. The top of the fixed block 22 is fixedly connected to a motor 23, the lead screw 24 movably penetrates through the fixed block 22 and extends downward, and the output end of the motor 23 is fixedly connected to the extended end of the lead screw 24. There are three support rods 26 in total.

[0023] When the above device is in specific use, the motor 23 is started. The output end of the motor 23 drives the lead screw 24 to rotate. The lead screw 24 drives the moving rod 25 on the outer wall to descend. The descent of the moving rod 25 limits the moving trajectory of the support rod 26 through the limiting rod 28 on the right side of the fixed rod 27. The support rod 26 rotates counterclockwise around the hinge point of the moving rod 25 and rotates upward until the rubber block 29 on the right side of the support rod 26 touches the well wall, thereby achieving the purpose of support, improving the reliability and efficiency of the operation, ensuring that the support rod 26 can be firmly fixed on the well wall when necessary, thus enhancing the fixing effect, and solving the problem that the surface of the rubber bucket is smooth and the fixing effect on the anchor pipe decreases in the background technology. Embodiment

[0024] See Figures 1-4 As shown in, on the basis of Embodiment 1, an extension mechanism 3 is provided on the casing 1. The extension mechanism 3 includes a sleeve 31. The sleeve 31 is arranged on the inner wall of the casing 1. Thread lines 32 are provided on the outer wall of the sleeve 31. The sleeve 31 relies on the cooperation of the thread lines 32 with the inner wall of the casing 1. When the sleeve 31 is twisted, the sleeve 31 will rotate and rise under the action of the thread lines 32. The sleeve 31 is threadedly connected to the inner wall of the casing 1. The sleeve 31 is cast in an integrated manner, which improves the integrity. There is no interface inside, and there is no weakness problem at the interface. It does not require assembly and can be directly installed, which is convenient for production, manufacturing and maintenance. It reduces the number of parts and steps in the assembly process, reduces the assembly cost and time, reduces the connection points and joints, reduces the risk of loosening or failure between parts, enhances the structural strength and stability of the overall component, and improves the long-term service life of the product.

[0025] When the above device is in specific use, the sleeve 31 is twisted. The sleeve 31 rotates and rises from the inner wall of the casing 1 by relying on the thread lines 32, thereby extending. By twisting the sleeve 31, the length change of the sleeve 31 can be controlled, so as to achieve the extension effect. This design provides flexibility and convenience in adjusting the length. The output end of the motor 23 drives the lead screw 24 to rotate to provide driving force.

[0026] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An anti-stuck oil pipe anchor, comprising a casing (1), characterized in that: The sleeve (1) is provided with a support device (2), the support device (2) comprising a connecting block (21), the connecting block (21) being fixedly connected to the inner wall of the sleeve (1), the inner wall of the connecting block (21) being fixedly connected to a fixing block (22), the bottom of the fixing block (22) being rotatably connected to a screw rod (24) via a bearing, the outer wall of the screw rod (24) being threadedly connected to a moving rod (25), the right side of the moving rod (25) being hinged to a support rod (26), the bottom of the connecting block (21) being provided with a sliding groove (210), the inner wall of the sliding groove (210) being fixedly connected to a fixing rod (27), the right side of the fixing rod (27) being hinged to a limiting rod (28).

2. The anti-stuck oil pipe anchor according to claim 1, characterized in that: The right side of the limiting rod (28) is hinged to the right side of the supporting rod (26); the right side of the supporting rod (26) is fixedly connected to a rubber block (29); and the front side of the inner wall of the supporting rod (26) is fixedly connected to a fixing column (211).

3. The anti-stuck oil pipe anchor according to claim 2, characterized in that: The top of the fixed block (22) is fixedly connected to a motor (23); the screw rod (24) movably penetrates the fixed block (22) and extends toward the bottom; the output end of the motor (23) is fixedly connected to the extension end of the screw rod (24).

4. The anti-stuck oil pipe anchor according to claim 3, characterized in that: There are three support rods (26) in total.

5. The anti-stuck oil pipe anchor according to claim 4, characterized in that: The sleeve (1) is provided with an extension mechanism (3), the extension mechanism (3) comprising a sleeve (31), the sleeve (31) being arranged on the inner wall of the sleeve (1), and the outer wall of the sleeve (31) being provided with a thread (32).

6. The anti-stuck oil pipe anchor according to claim 5, characterized in that: The sleeve (31) is threadedly connected to the inner wall of the sleeve (1).

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