Locking structure of long-acting spacer tool

Abstract

The utility model relates to long -term separate tool technical field, specifically is a long -term separate tool's locking structure, including locking ring cover, center tube, lock slot and slide rail, the lock slot includes lock, conversion mouth and conversion corridor, the surface of center tube is corresponded the position of lock slot and is provided with the lock block, the bearing is fixed with the bearing of the outside of center tube and the inside clamping sleeve of locking ring cover, the lock block of center tube surface is converted to the conversion mouth of corresponding lock bottom through conversion corridor from the conversion mouth of one side of lock slot by rotating the pipe column, when the center tube is lifted, make the lock block be in the lock position and lock, simultaneously, through the bearing cooperation center tube rotation movement.

Description

Technical Field

[0001] This utility model relates to the technical field of long-term isolation mining tools, specifically to a locking structure for a long-term isolation mining tool. Background Technology

[0002] Long-term isolation production tools are specialized equipment used for the treatment of casing damage wells. They restore production capacity by sealing and isolating oil and water layers. Packers are often used to achieve this. A packer is a downhole tool used to seal the annulus and / or isolate the target layer, control the injection or extraction of fluids, and withstand pressure differentials.

[0003] Currently, there are two main methods for locking packers in well completion: one is to use the wedge-shaped contact between the locking sleeve and the locking ring to lock the threads at the packer's central tube; the other is to design the packer's locking ring with a bidirectional thread to simultaneously lock the locking sleeve and the central tube. However, both of these locking mechanisms require a relatively long thread in the packer's central tube. Analysis shows that due to the unique structure of the locking ring, the threaded section is prone to breakage of the packer's central tube when it cannot be released under abnormal load. Therefore, a locking structure for a long-lasting packer tool is proposed. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a locking structure for a long-lasting isolation mining tool.

[0005] The technical solution adopted by this utility model to solve its technical problem is a locking structure of a long-term isolation mining tool, including a locking ring, a central tube, a locking groove and a slide rail. The locking groove includes a locking opening, a conversion opening and a conversion passage. A locking block is provided on the surface of the central tube at the position corresponding to the locking groove, and a bearing is fixed to the inner side of the locking ring sleeve on the periphery of the central tube.

[0006] By adopting the above technical solution, the specific installation method of the mechanism is that the lower end of the locking sleeve is connected to the piston cylinder and the upper end is connected to the lower slip seat; when the locking ring sleeve moves upward under the action of piston force, it moves smoothly up and down through the slide rail on the inner wall of the locking ring sleeve and the bearing on the outer side of the central tube, avoiding problems such as displacement between the two due to gaps. Then, the tube column is rotated so that the locking block on the surface of the central tube is switched from the conversion port on one side of the locking groove through the conversion passage to the conversion port at the bottom of the corresponding locking port. When the central tube is raised, the locking block is locked in the locking position. At the same time, the central tube rotates in coordination with the bearing.

[0007] Specifically, the locking ring is located around the central tube, and the locking groove is formed on the surface of the locking ring.

[0008] By adopting the above technical solution, the locking effect is achieved by using the lock groove in conjunction with the lock block.

[0009] Specifically, the lock opening is provided in one set, corresponding to the top side of the lock groove, and the conversion port is provided in three sets, each located away from the lock opening.

[0010] By adopting the above technical solution, the conversion port is used to facilitate the movement of the lock block along the track of the lock groove.

[0011] Specifically, the transition passage corresponds to the center position of the lock slot.

[0012] By adopting the above technical solution, rotating the tube column causes the locking block on the surface of the central tube to change from the conversion port on one side of the locking groove through the conversion passage to the conversion port at the bottom of the corresponding locking port. When the central tube is raised, the locking block is locked in the locking position.

[0013] Specifically, slide rails are installed on both sides of the inner wall of the locking ring sleeve, and the bearing is slidably connected to the slide rails through sliders on both sides.

[0014] By adopting the above technical solution, the sliding rail on the inner wall of the locking ring sleeve cooperates with the bearing on the outer periphery of the central tube to achieve smooth lifting and lowering movement, avoiding problems such as displacement between the two due to gaps. At the same time, the bearing cooperates with the rotation movement of the central tube.

[0015] The beneficial effects of this utility model are: (1) The locking structure of the long-term isolation mining tool described in this utility model is such that rotating the pipe column causes the locking block on the surface of the central pipe to be converted from the conversion port on one side of the locking groove to the conversion port at the bottom of the corresponding locking port through the conversion passage. When the central pipe is lifted, the locking block is locked in the locking position. At the same time, the central pipe rotates in coordination with the bearing.

[0016] (2) The locking structure of the long-term isolation mining tool described in this utility model, when the locking ring sleeve is subjected to piston force and moves upward, it moves smoothly up and down through the slide rail on the inner wall of the locking ring sleeve and the bearing on the outer side of the central tube, so as to avoid displacement between the two due to gaps. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is an internal perspective view of the present invention; In the diagram: 1. Locking ring sleeve; 2. Central tube; 3. Lock groove; 301. Locking port; 302. Transition port; 303. Transition passage; 4. Locking block; 5. Bearing; 6. Slide rail. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1-2 As shown, the locking structure of a long-term isolation mining tool of this utility model includes a locking ring sleeve 1, a central tube 2, a locking groove 3 and a slide rail 6. The locking groove 3 includes a locking port 301, a conversion port 302 and a conversion passage 303. A locking block 4 is provided on the surface of the central tube 2 at the position corresponding to the locking groove 3, and a bearing 5 is fixed to the inner side of the locking ring sleeve 1 on the periphery of the central tube 2.

[0021] In use, the specific installation method of this mechanism is that the lower end of the locking sleeve is connected to the piston cylinder and the upper end is connected to the lower chuck seat; when the locking ring sleeve 1 moves upward under the action of piston force, it moves smoothly up and down through the slide rail 6 on the inner wall of the locking ring sleeve 1 in conjunction with the bearing 5 on the periphery of the central tube 2, so as to avoid displacement between the two due to gaps. Then, the tube column is rotated so that the locking block 4 on the surface of the central tube 2 is switched from the conversion port 302 on one side of the locking groove 3 through the conversion passage 303 to the conversion port 302 at the bottom of the corresponding locking port 301. When the central tube 2 is raised, the locking block 4 is locked in the position of the locking port 301. At the same time, the central tube 2 rotates in coordination with the bearing 5.

[0022] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a locking ring sleeve 1 located around the center tube 2, and a locking groove 3 formed on the surface of the locking ring sleeve 1.

[0023] When in use, the locking effect is achieved by the lock groove 3 working together with the lock block 4.

[0024] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a set of lock openings 301, which are located on the top side of the lock groove 3, and three sets of conversion openings 302, which are located away from the lock openings 301.

[0025] During use, the conversion port 302 is used to allow the locking block 4 to move along the track of the locking groove 3.

[0026] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes the center position of the lock groove 3 corresponding to the conversion passage 303.

[0027] When in use, rotating the column causes the locking block 4 on the surface of the central tube 2 to move from the conversion port 302 on one side of the locking groove 3 through the conversion passage 303 to the conversion port 302 at the bottom of the corresponding locking port 301. When the central tube 2 is raised, the locking block 4 is locked in the position of the locking port 301.

[0028] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes slide rails 6 installed on both sides of the inner wall of the locking ring sleeve 1, and the bearing 5 is slidably connected to the slide rails 6 through sliders on both sides.

[0029] During use, the sliding rail 6 on the inner wall of the locking ring sleeve 1 cooperates with the bearing 5 on the periphery of the central tube 2 to achieve smooth lifting and lowering movement, avoiding displacement problems caused by gaps between the two. At the same time, the bearing 5 cooperates with the rotation movement of the central tube 2.

[0030] In use, the specific installation method of this utility model is that the lower end of the locking sleeve is connected to the piston cylinder and the upper end is connected to the lower chuck seat; when the locking ring sleeve 1 moves upward under the action of piston force, it moves smoothly up and down through the slide rail 6 on the inner wall of the locking ring sleeve 1 and the bearing 5 on the periphery of the central tube 2, so as to avoid displacement between the two due to gaps. Then, the tube column is rotated so that the locking block 4 on the surface of the central tube 2 is switched from the conversion port 302 on one side of the locking groove 3 through the conversion passage 303 to the conversion port 302 at the bottom of the corresponding locking port 301. When the central tube 2 is raised, the locking block 4 is locked in the position of the locking port 301. At the same time, the central tube 2 rotates in coordination with the bearing 5.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A locking structure for a long-lasting isolation mining tool, characterized in that, It includes a locking ring sleeve (1), a central tube (2), a locking groove (3) and a slide rail (6), wherein the locking groove (3) includes a locking opening (301), a conversion opening (302) and a conversion passage (303); A locking block (4) is provided on the surface of the central tube (2) at the position corresponding to the locking groove (3), and a bearing (5) is fixed on the outer periphery of the central tube (2) in the inner side of the locking ring sleeve (1).

2. The locking structure of a long-term isolation mining tool according to claim 1, characterized in that, The locking ring sleeve (1) is located around the center tube (2), and the locking groove (3) is formed on the surface of the locking ring sleeve (1).

3. The locking structure of a long-term isolation mining tool according to claim 1, characterized in that, The lock opening (301) is provided in one set and corresponds to the top side of the lock groove (3). The conversion port (302) is provided in three sets and is located away from the lock opening (301).

4. The locking structure of a long-term isolation mining tool according to claim 1, characterized in that, The conversion passage (303) corresponds to the center position of the lock slot (3).

5. The locking structure of a long-term isolation mining tool according to claim 1, characterized in that, The inner walls of the locking ring sleeve (1) are equipped with slide rails (6) on both sides, and the bearing (5) is slidably connected to the slide rails (6) through the sliders on both sides.

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