Oil casing air-tight seal detection packer

Abstract

The utility model belongs to the field of packers, and particularly relates to an oil casing air-tight seal detection packer which comprises a packer main body, an inner pipe is fixedly connected to the packer main body, an oil casing is connected to the inner pipe through threads, a clamping groove is formed in the oil casing, a vertical plate is fixedly connected to the packer main body, and the vertical plate is fixedly connected to the packer main body. A threaded rod is connected into the vertical plate through threads, a rotating block is fixedly connected to one end of the threaded rod, a clamping plate is installed at the other end of the threaded rod through a bearing, a limiting clamping block is fixedly connected to the clamping plate, and the limiting clamping block is in sliding connection with the clamping groove. By rotating the rotating block, the threaded rod can move in the direction of the oil casing, when the clamping plates make contact with and clamp the oil casing, the limiting clamping blocks slide into the clamping grooves, and under the clamping and limiting effects of the clamping plates and the limiting clamping blocks, the situation that the oil casing falls off from an inner pipe is eradicated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of packer, concretely is a kind of petroleum casing gas seal detection packer. BACKGROUND

[0002] Packer refers to the elastic sealing element, and by this packer annular space, insulate production layer, to control production fluid, protect the downhole tool of casing, according to sealing position, can be divided into two kinds, one is the seal between casing and casing, called "outer seal", one is the seal between tubing or tubing seal short connection and packer inner cavity, called "inner seal", for example, the utility model patent provided in patent authorized announcement No.CN217950318U provides a kind of packer for petroleum pipe gas seal detection, including packer main body, both ends of packer main body are equipped with connecting head, the surface of one end of packer main body top is equipped with detection piece, inner tube is equipped around in packer main body, and inner tube is equipped with filling gap between packer main body, filling gap is filled with protective gas inside, detection piece bottom is connected with detection rod.

[0003] The inner tube of existing packer and petroleum casing are mostly installed by thread, and long-term use can cause thread wear, which can cause the petroleum casing to fall off the inner tube. Therefore, improvement is needed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of petroleum casing gas seal detection packer, solve the problem that the inner tube of packer and petroleum casing are mostly installed by thread, and long-term use can cause thread wear, which can cause the petroleum casing to fall off the inner tube.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of petroleum casing gas seal detection packer, including packer main body, the packer main body is fixedly connected with inner tube, the inner tube is connected with petroleum casing by thread, the petroleum casing is equipped with clamping groove, the packer main body is fixedly connected with vertical plate, the vertical plate is connected with threaded rod by thread in, one end of the threaded rod is fixedly connected with rotating block, the other end of the threaded rod is installed with clamping plate by bearing, the clamping plate is fixedly connected with limit block, the limit block is slidably connected with clamping groove.

[0006] Preferably, the clamping plate contacts the petroleum casing, and the clamping plate is a semi-arc plate, which clamps the petroleum casing by setting the clamping plate.

[0007] Preferably, the limit block is a rectangular block, and the limit block is made of rubber, which limits the petroleum casing by installing the limit block.

[0008] Preferably, a pull rod is slidably connected to the rotating block, the pull rod is slidably connected to the vertical plate, a fixed plate is fixedly connected to the pull rod, and a spring is provided on the outside of the pull rod. Through the elastic force of the spring, the pull rod slides into the vertical plate, thereby locking the rotating block.

[0009] Preferably, the fixing plate is a circular plate made of stainless steel. By providing the fixing plate, the elastic force of the spring can act on the pull rod.

[0010] Preferably, one end of the spring is fixedly connected to the surface of the rotating block, and the other end of the spring is fixedly connected to the fixed plate, so that the pull rod is always located in the vertical plate through the elastic force of the spring.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model rotates the rotating block, and the threaded rod moves toward the oil casing due to the relationship between the threaded connection with the vertical plate. At the same time, the clamping plate gradually approaches the oil casing. When the clamping plate contacts and clamps the oil casing, the limiting clamping block slides into the clamping groove. Under the clamping and limiting action of the clamping plate and the limiting clamping block, the oil casing and the inner pipe are more firmly connected, and the oil casing is prevented from falling off from the inner pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 For the utility model Figure 1 The local structure front view and cross-sectional view;

[0015] Figure 3 For the utility model Figure 2 A magnified view of the local structure;

[0016] Figure 4 For the utility model Figure 3 A magnified view of the structure of part A;

[0017] Figure 5 For the utility model Figure 3 A magnified view of the structure of part B;

[0018] Figure 6 For the utility model Figure 2 A magnified top view of the center plate.

[0019] In the figure: 1. Packer body; 2. Inner tube; 3. Oil casing; 4. Vertical plate; 5. Threaded rod; 6. Rotating block; 7. Clamp; 8. Slot; 9. Limiting block; 10. Pull rod; 11. Fixed plate; 12. Spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 A gas seal detection packer for oil casing, including packer main body 1, the inner tube 2 is fixedly connected on the packer main body 1, the oil casing 3 is connected on the inner tube 2 by screw thread, the oil casing 3 is provided with the clamping groove 8, the vertical plate 4 is fixedly connected on the packer main body 1, the threaded rod 5 is connected in the vertical plate 4 by screw thread, one end of the threaded rod 5 is fixedly connected with the rotating block 6, the clamping plate 7 is installed on the other end of the threaded rod 5 by bearing, the clamping plate 7 is semicircular plate, by setting up the clamping plate 7, the oil casing 3 is clamped.

[0022] Please refer to Figure 3 , Figure 4 The clamping plate 7 is in contact with the oil casing 3, the limiting block 9 is fixedly connected on the clamping plate 7, the limiting block 9 is slidably connected with the clamping groove 8, the limiting block 9 is rectangular block, the limiting block 9 is rubber material, by installing the limiting block 9, the oil casing 3 is limited.

[0023] Please refer to Figure 3 , Figure 5 The pull rod 10 is slidably connected on the rotating block 6, the pull rod 10 is slidably connected with the vertical plate 4, the fixed plate 11 is fixedly connected on the pull rod 10, the fixed plate 11 is circular plate, the fixed plate 11 is stainless steel material, by setting up the fixed plate 11, the elastic force of the spring 12 can act on the pull rod 10, the spring 12 is arranged on the outer side of the pull rod 10, one end of the spring 12 is fixedly connected on the surface of the rotating block 6, the other end of the spring 12 is fixedly connected with the fixed plate 11, by the elastic force of the spring 12, the pull rod 10 is always in the vertical plate 4, by the elastic force of the spring 12, the pull rod 10 is slid to the vertical plate 4, thereby the rotating block 6 is locked.

[0024] The utility model discloses a specific implementation process as follows: when using, first, the petroleum casing 3 is installed to the inner tube 2 through the mode of threaded connection, then pull the pull rod 10, make it with the vertical plate 4 separate, then rotate the rotating block 6, make with the vertical plate 4 through the threaded rod 5 of threaded connection, move to the direction of petroleum casing 3 on the vertical plate 4, and the threaded rod 5 will be with the clamping plate 7 gradually close to petroleum casing 3, when the clamping plate 7 and petroleum casing 3 completely contact and clamp petroleum casing 3, the limiting stopper block 9 on the clamping plate 7 slides to the clamping groove 8 set up on petroleum casing 3 simultaneously, and under the clamping and limiting of the clamping plate 7 and limiting stopper block 9, the connection of petroleum casing 3 and inner tube 2 will be more reliable, thereby the condition that petroleum casing 3 falls off from the inner tube 2 is eliminated, improves the security of packer, then push the pull rod 10, under the action of thrust and spring 12 elasticity, make the pull rod 10 slide to the vertical plate 4, lock the rotating block 6, can prevent the threaded rod 5 loosening.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A petroleum casing gas seal detection packer, comprising a packer body (1), characterized in that: The packer body (1) is fixedly connected to an inner tube (2), the inner tube (2) is connected to an oil casing (3) via a thread, the oil casing (3) is provided with a card slot (8), the packer body (1) is fixedly connected to a vertical plate (4), a threaded rod (5) is connected to the vertical plate (4) via a thread, one end of the threaded rod (5) is fixedly connected to a rotating block (6), the other end of the threaded rod (5) is installed with a clamping plate (7) via a bearing, the clamping plate (7) is fixedly connected to a limit clamping block (9), and the limit clamping block (9) is slidably connected to the card slot (8).

2. The oil casing gas seal detection packer according to claim 1, characterized in that: The clamping plate (7) contacts the oil casing (3), and the clamping plate (7) is in the shape of a semi-arc plate.

3. The oil casing gas seal detection packer according to claim 1, characterized in that: The limiting block (9) is in the shape of a rectangular block and is made of rubber.

4. The oil casing gas seal detection packer according to claim 1, characterized in that: A pull rod (10) is slidably connected to the rotating block (6), the pull rod (10) is slidably connected to the vertical plate (4), a fixed plate (11) is fixedly connected to the pull rod (10), and a spring (12) is provided on the outside of the pull rod (10).

5. The oil casing gas seal detection packer according to claim 4, characterized in that: The fixing plate (11) is a circular plate, and the fixing plate (11) is made of stainless steel.

6. The oil casing gas seal detection packer according to claim 4, characterized in that: One end of the spring (12) is fixedly connected to the surface of the rotating block (6), and the other end of the spring (12) is fixedly connected to the fixed plate (11).

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