Connecting assembly of lower sleeve

Abstract

The utility model discloses a connecting assembly of a lower casing pipe, which comprises a casing pipe and a conveying pipe, and the right end of the casing pipe is communicated with a mounting part through a flange plate. According to the utility model, through the arrangement of the mounting part, the mounting part can be conveniently mounted with the sleeve through the flange plate, through the adoption of the trumpet-shaped connecting part, the connecting part can adapt to conveying pipes with different diameters, and meanwhile, the fastening mechanism can ensure the stability of the connection between the connecting part and the conveying pipe; the problems that existing delivery pipes are connected between sleeves through flange connectors, connection is convenient, but due to the fact that the delivery pipes need to cope with different delivery environments, delivery pipes with different diameters need to be used, and cost is high are solved. The problems that an operator needs to purchase flange joints of different specifications to adapt to connection between conveying pipes of different diameters and sleeves, the connection cost is increased, the diameters of the different conveying pipes need to be measured every time replacement is carried out, and operation is troublesome are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and natural gas exploration and exploitation, in particular to a casing connection assembly. Background Art

[0002] Casing refers to the operation of connecting casings one by one and lowering them into the well when cementing is required after the well is drilled to a predetermined depth. Cementing is the process of injecting cement through the casing to isolate the oil, gas and water layers and reinforce the well wall.

[0003] After the casing is installed in the well, the delivery pipe and the casing need to be installed through a connection group to facilitate the transportation of materials. The existing delivery pipes are mostly connected between casings using flange joints, which are convenient to connect. However, since the delivery pipes need to cope with different transportation environments, delivery pipes of different diameters are required. Therefore, the operator needs to purchase flange joints of different specifications to adapt to the connection between delivery pipes and casings of different diameters. This method increases the connection cost, and each replacement requires measuring the diameters of different delivery pipes, which is more troublesome. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a connection assembly for lower casing, which has the advantage of adapting to conveying pipes of different diameters, and solves the problem that the existing conveying pipes are mostly connected between casings by flange joints, which is convenient to connect. However, since the conveying pipes need to cope with different conveying environments, conveying pipes of different diameters are required, and then the operator needs to purchase flange joints of different specifications to adapt to the connection between conveying pipes and casings of different diameters. This method increases the connection cost, and each replacement requires measuring the diameters between different conveying pipes, which is more troublesome.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection assembly for a lower casing, comprising a casing and a delivery pipe, wherein the right end of the casing is connected to a mounting portion via a flange, an end of the mounting portion away from the casing is connected to a connecting portion, the connecting portion is trumpet-shaped, the delivery pipe is connected to an end of the connecting portion away from the mounting portion, and the front and rear sides of the mounting portion and the delivery pipe surface are fixedly connected with fastening mechanisms.

[0006] As a preferred embodiment of the utility model, the fastening mechanism includes a fastening plate, which is fixedly connected to the front and rear sides of the mounting portion and the surface of the conveying pipe, a fastening screw is arranged inside the fastening plate, and a fastening nut is threadedly connected to the right side of the fastening screw surface.

[0007] As a preferred embodiment of the present invention, a sealing gasket is adhered to the surface of the connecting portion, and the material of the sealing gasket is natural rubber.

[0008] As a preferred embodiment of the present invention, a movable groove is opened inside the fastening plate, the movable groove is arranged in a through-type manner, and the fastening screw is located inside the movable groove.

[0009] As a preferred embodiment of the present invention, a rubber pad is sleeved on the surface of the fastening screw, and the rubber pad is used in conjunction with a fastening nut.

[0010] As a preferred embodiment of the present invention, the connecting portion and the mounting portion are integrally formed.

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

[0012] 1. The utility model provides an installation part so that the installation part can be conveniently installed through a flange and a sleeve. By adopting a connection part arranged in a trumpet shape, the connection part can adapt to delivery pipes of different diameters. At the same time, the fastening mechanism can ensure the stability of the connection between the connection part and the delivery pipe, thereby solving the problem that the existing delivery pipes are mostly connected between sleeves by flange joints, which is convenient to connect. However, since the delivery pipes need to cope with different delivery environments, delivery pipes of different diameters are required, and then the operator needs to purchase flange joints of different specifications to adapt to the connection between delivery pipes of different diameters and sleeves. This method increases the connection cost, and each replacement requires measuring the diameters between different delivery pipes, which is a relatively troublesome problem. The utility model achieves the effect of adapting to delivery pipes of different diameters.

[0013] 2. The utility model provides a fastening mechanism. When the operator inserts the delivery pipe into the surface of the connection part, the operator inserts the fastening screw into the interior of the fastening plate, and then the operator rotates the fastening nut into the surface of the fastening screw. As the operator continuously rotates the fastening nut, the fastening nut drives the delivery pipe to continuously move toward the connection part through the fastening screw and the fastening plate, so that the inner wall of the delivery pipe and the surface of the connection part are stably fitted, thereby ensuring the stability of the connection between the connection part and the delivery pipe.

[0014] 3. The utility model provides a sealing gasket so that the sealing gasket is adhered to the surface of the connecting part. When the inner wall of the conveying pipe and the surface of the connecting part are stably fitted, the sealing gasket can fill the gap between the conveying pipe and the connecting part, thereby ensuring the sealing of the connection between the connecting part and the conveying pipe and avoiding liquid leakage between the connecting part and the conveying pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the utility model from another viewing angle;

[0017] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0018] In the figure: 1. sleeve; 2. conveying pipe; 3. mounting portion; 4. connecting portion; 5. fastening mechanism; 51. fastening plate; 52. fastening screw; 53. fastening nut; 6. sealing gasket; 7. movable groove; 8. rubber pad. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figures 1 to 3 As shown, the utility model provides a connection assembly for a lower casing, comprising a casing 1 and a delivery pipe 2. The right end of the casing 1 is connected to a mounting portion 3 via a flange, and the end of the mounting portion 3 away from the casing 1 is connected to a connecting portion 4, the connecting portion 4 is trumpet-shaped, and the delivery pipe 2 is connected to the end of the connecting portion 4 away from the mounting portion 3. The front and rear sides of the surfaces of the mounting portion 3 and the delivery pipe 2 are fixedly connected with fastening mechanisms 5.

[0021] refer to Figure 3 The fastening mechanism 5 includes a fastening plate 51, which is fixedly connected to the front and rear sides of the mounting portion 3 and the surface of the conveying pipe 2. A fastening screw 52 is arranged inside the fastening plate 51, and a fastening nut 53 is threadedly connected to the right side of the surface of the fastening screw 52.

[0022] As a technical optimization scheme of the utility model, by setting a fastening mechanism 5, when the operator inserts the conveying pipe 2 into the surface of the connecting part 4, the operator inserts the fastening screw 52 into the interior of the fastening plate 51, and then the operator rotates the fastening nut 53 into the surface of the fastening screw 52. By the operator continuously rotating the fastening nut 53, the fastening nut 53 will drive the conveying pipe 2 to continuously move toward the connecting part 4 through the fastening screw 52 and the fastening plate 51, so that the inner wall of the conveying pipe 2 and the surface of the connecting part 4 are stably fitted, thereby ensuring the stability of the connection between the connecting part 4 and the conveying pipe 2.

[0023] refer to Figure 3 A sealing gasket 6 is pasted on the surface of the connecting portion 4, and the material of the sealing gasket 6 is natural rubber.

[0024] As a technical optimization solution of the utility model, a sealing gasket 6 is provided and adhered to the surface of the connecting part 4. When the inner wall of the conveying pipe 2 and the surface of the connecting part 4 are stably fitted, the sealing gasket 6 can fill the gap between the conveying pipe 2 and the connecting part 4, thereby ensuring the sealing of the connection between the connecting part 4 and the conveying pipe 2 and avoiding liquid leakage between the connecting part 4 and the conveying pipe 2.

[0025] refer to Figure 3 A movable groove 7 is provided inside the fastening plate 51 . The movable groove 7 is arranged in a through-type manner. The fastening screw 52 is located inside the movable groove 7 .

[0026] As a technical optimization solution of the utility model, by setting a movable groove 7, when using the fastening mechanism 5, the operator puts the fastening screw 52 into the movable groove 7, so that the fastening screw 52 can move inside the movable groove 7, so that the fastening mechanism 5 can adapt to conveying pipes 2 of different specifications.

[0027] refer to Figure 3 A rubber pad 8 is sleeved on the surface of the fastening screw 52 , and the rubber pad 8 is used in conjunction with the fastening nut 53 .

[0028] As a technical optimization solution of the utility model, by setting the rubber pad 8, when the fastening nut 53 contacts the fastening plate 51 through the fastening screw 52, ​​the fastening nut 53 contacts the rubber pad 8 first, so that the rubber pad 8 can increase the friction between the fastening nut 53 and the fastening plate 51, thereby avoiding the loosening of the fastening nut 53 caused by the vibration generated by the liquid flow.

[0029] refer to Figure 3 The connecting portion 4 and the mounting portion 3 are integrally formed.

[0030] As a technical optimization solution of the utility model, by adopting an integrated arrangement of the connecting part 4 and the mounting part 3, the structure between the connecting part 4 and the mounting part 3 is made more stable, thereby avoiding the connection part 4 and the mounting part 3 from being damaged due to excessive internal pressure.

[0031] The working principle and use process of the utility model are as follows: when the operator needs to connect the sleeve 1 with the delivery pipe 2, the mounting portion 3 is installed and connected with the sleeve 1 through the flange, and then the operator fits the inner wall of the delivery pipe 2 with the surface of the connecting portion 4. At the same time, by adopting the trumpet-shaped connecting portion 4, the connecting portion 4 can adapt to delivery pipes 2 of different diameters. When the delivery pipe 2 and the connecting portion 4 are fitted, the operator sequentially passes the fastening screw 52 through the mounting portion 3 and the fastening plate 51 on the delivery pipe 2, and then the operator rotates the fastening screw 52 with the help of an electric tool. The tightening nut 53 will drive the delivery pipe 2 to continuously move toward the connecting part 4 through the tightening screw 52 and the tightening plate 51, so that the inner wall of the delivery pipe 2 and the surface of the connecting part 4 are stably fitted, thereby ensuring the stability of the connection between the connecting part 4 and the delivery pipe 2. At the same time, when the inner wall of the delivery pipe 2 and the surface of the connecting part 4 are stably fitted, the sealing gasket 6 can fill the gap between the delivery pipe 2 and the connecting part 4, thereby ensuring the sealing of the connection between the connecting part 4 and the delivery pipe 2 and avoiding liquid leakage between the connecting part 4 and the delivery pipe 2.

[0032] In summary: this kind of connection component for the lower casing, by providing a mounting portion 3, the mounting portion 3 can be conveniently installed with the casing 1 through a flange plate, and by adopting a trumpet-shaped connecting portion 4, the connecting portion 4 can adapt to conveying pipes 2 of different diameters, and at the same time, the fastening mechanism 5 can ensure the stability of the connection between the connecting portion 4 and the conveying pipe 2, thereby solving the problem that the existing conveying pipes are mostly connected between casings by flange joints, which is convenient to connect, but because the conveying pipes need to cope with different conveying environments, conveying pipes of different diameters are required, and then the operator needs to purchase flange joints of different specifications to adapt to the connection between conveying pipes of different diameters and casings. This method increases the connection cost, and each replacement requires measuring the diameters between different conveying pipes, which is a more troublesome problem.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the utility model have been shown and described, it is understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A casing connection assembly, comprising a casing (1) and a delivery pipe (2), characterized in that: The right end of the sleeve (1) is connected to a mounting portion (3) via a flange, and the end of the mounting portion (3) away from the sleeve (1) is connected to a connecting portion (4), the connecting portion (4) is arranged in a trumpet shape, and the delivery pipe (2) is connected to the end of the connecting portion (4) away from the mounting portion (3), and the front and rear sides of the surfaces of the mounting portion (3) and the delivery pipe (2) are fixedly connected with a fastening mechanism (5).

2. A casing connection assembly according to claim 1, characterized in that: The fastening mechanism (5) comprises a fastening plate (51) which is fixedly connected to the front and rear sides of the mounting portion (3) and the surface of the conveying pipe (2); a fastening screw (52) is arranged inside the fastening plate (51); and a fastening nut (53) is threadedly connected to the right side of the surface of the fastening screw (52).

3. The connection assembly for casing installation according to claim 1, characterized in that: A sealing gasket (6) is adhered to the surface of the connecting portion (4), and the sealing gasket (6) is made of natural rubber.

4. A casing connection assembly according to claim 2, characterized in that: A movable groove (7) is provided inside the fastening plate (51), the movable groove (7) is arranged in a through-type manner, and the fastening screw (52) is located inside the movable groove (7).

5. The connection assembly for casing running according to claim 2, characterized in that: The surface of the fastening screw rod (52) is sleeved with a rubber pad (8), and the rubber pad (8) is used in conjunction with the fastening nut (53).

6. The connection assembly for casing running according to claim 1, characterized in that: The connecting portion (4) and the mounting portion (3) are integrally formed.

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