Joint for petroleum casing pipe

Abstract

The utility model belongs to the field of petroleum casing pipes, and provides a petroleum casing pipe connector which comprises two connector bodies, the two connector bodies are symmetrically arranged, fixing rings are symmetrically and fixedly installed on the sides, close to each other, of the outer sides of the two connector bodies, and sealing grooves are formed in the middle positions of the sides, close to each other, of the two fixing rings. A first sealing ring is inserted into the sealing groove, multiple sets of first fixing bolts are inserted into one set of fixing rings, the first fixing bolts penetrate through the interiors of the two sets of fixing rings, and a first fixing nut is arranged on one side of the outer side of each first fixing bolt in a meshed and sleeved mode. The fixing clamping plates are arranged on the inner sides of the reinforcing assemblies in a sleeved mode, the second fixing nuts are rotated after sleeving is completed, the two sets of fixing clamping plates are driven to be close to each other, then the two sets of fixing clamping plates are matched with each other to reinforce the connected oil casing pipe, and therefore the firmness of the device for fixing the oil casing pipe is improved.

Description

Technical Field

[0001] This utility model belongs to the field of oil casing, specifically a connector for oil casing. Background Technology

[0002] Oil casing and tubing are essential materials in oil and gas field exploration and development, serving as a vital channel for underground oil and gas resources to reach the surface. Due to increasingly complex operating conditions, such as temperature and well depth, and with the emergence of various new drilling and completion technologies and the development of ultra-deep gas fields driven by resource demands, oil casing and tubing joints are finding increasing applications in oil and gas development.

[0003] Most existing oil casing fittings cannot seal the connection after fixing, which may lead to leakage of the oil casing and reduce the sealing performance of the connection. Furthermore, most existing oil casing fittings cannot reinforce the connected oil casing, which reduces the firmness of the device in fixing the oil casing. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a connector for oil casing, which solves the problems in the prior art such as the inability to seal the connection after fixing and the inability to reinforce the connected oil casing.

[0005] A connector for oil casing includes a connector body with two symmetrically arranged sets of retaining rings fixedly installed on the outer sides of the two sets of connector bodies that are close to each other. A sealing groove is formed at the middle position of ...

[0006] Preferably, the top and bottom of the reinforcing component are symmetrically fitted with fixing plates, and connecting plates are symmetrically fixed at the two ends of the two sets of fixing plates close to each other. A second fixing bolt is inserted into the inside of the connecting plate and passes through the inside of the two sets of connecting plates. A second fixing nut is engaged at the bottom of the outside of the second fixing bolt.

[0007] Preferably, the fixing clamp is made of an arc-shaped structure and is sleeved on the outside of the sealing fixing sleeve.

[0008] Preferably, the inside of the fixing ring has eight sets of fixing holes evenly spaced, and the fixing holes are compatible with the first fixing bolt.

[0009] Preferably, the inner side of the sealing sleeve is provided with two sets of grooves, and the grooves are adapted to the second sealing ring.

[0010] Preferably, the outer side of the connector body away from the fixing ring is provided with an external thread, and the external thread is compatible with the internal thread on the external oil casing.

[0011] Preferably, the sealing sleeve is made of rubber, and one end of the sealing sleeve is fixedly connected to the outside of the connector body.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model involves inserting the connector body onto the outside of the oil casing to be connected. After insertion, rotating the connector body causes the external thread to be fixedly connected to the oil casing. After connection, a sealing and fixing sleeve is fitted onto the outside of the oil casing. After fitting, a second sealing ring is used to increase the sealing at the connection between the connector body and the oil casing. After the two sets of connector bodies are connected, multiple sets of first fixing bolts are inserted into the inside of the fixing ring. After insertion, the first fixing nut is rotated to the outside of the first fixing bolt. Then, the first fixing bolt and the first fixing nut are used to fix and connect multiple sets of oil casing. This facilitates the operator to fix and install the oil casing and can also seal the connection, thereby improving the practicality of the device.

[0014] 2. This utility model involves fitting a fixing clamp plate inside the reinforcing component. After fitting, rotating the second fixing nut causes the two sets of fixing clamp plates to move closer to each other. The cooperation of the two sets of fixing clamp plates reinforces the connected oil casing, thereby improving the stability of the device in fixing the oil casing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 3 This is a side view of the fixing clamp of this utility model.

[0018] In the figure: 1. Connector body; 10. First sealing ring; 11. Sealing groove; 12. First fixing bolt; 13. Second sealing ring; 14. External thread; 15. First fixing nut; 16. Fixing ring; 17. Sealing fixing sleeve; 2. Reinforcing component; 20. Fixing clamp; 21. Second fixing bolt; 22. Connecting plate; 23. Second fixing nut. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] like Figures 1 to 3 As shown:

[0021] Example 1: This utility model provides a connector for oil casing, including a connector body 1. Two sets of connector bodies 1 are symmetrically arranged. Fixing rings 16 are symmetrically fixedly installed on the outer sides of the two sets of connector bodies 1 that are close to each other. A sealing groove 11 is opened at the middle position of the two sets of fixing rings 16 that are close to each other. A first sealing ring 10 is inserted into the sealing groove 11. Multiple sets of first fixing bolts 12 are inserted into the inner side of one set of fixing rings 16, and the first fixing bolts 12 penetrate the inner side of the two sets of fixing rings 16. A first fixing nut 15 is engaged on the outer side of the first fixing bolt 12. A sealing fixing sleeve 17 is fitted at the middle position of the outer side of the connector body 1. Two sets of second sealing rings 13 are arranged on the inner side of the sealing fixing sleeve 17. A reinforcing component 2 is fitted on the outer side of the sealing fixing sleeve 17 away from the fixing ring 16.

[0022] Preferably, the inside of the fixing ring 16 has eight sets of fixing holes evenly spaced, and the fixing holes are compatible with the first fixing bolt 12. The fixing holes make it easy for the operator to install the first fixing bolt 12.

[0023] Preferably, the inner side of the sealing and fixing sleeve 17 is provided with two sets of grooves, and the grooves are adapted to the second sealing ring 13. The connection between the oil casing and the joint body 1 can be sealed by the cooperation of the grooves and the second sealing ring 13.

[0024] Preferably, an external thread 14 is provided on the outer side of the connector body 1 away from the fixing ring 16, and the external thread 14 is compatible with the internal thread on the external oil casing. The external thread 14 makes it easy for operators to connect the connector body 1 and the oil casing to each other by means of threaded connection.

[0025] Preferably, the sealing sleeve 17 is made of rubber, and one end of the sealing sleeve 17 is fixedly connected to the outside of the connector body 1. The rubber material allows the sealing sleeve 17 to be tightly wrapped around the outside of the externally connected oil casing.

[0026] As can be seen from the above, when using the device, the connector body 1 is first inserted into the outside of the oil casing to be connected. After insertion, the connector body 1 is rotated to drive the external thread 14 to be fixedly connected with the oil casing. After the connection is completed, the sealing and fixing sleeve 17 is put on the outside of the oil casing. After the sleeve is put on, the second sealing ring 13 is used to increase the sealing of the connection between the connector body 1 and the oil casing. After the two sets of connector bodies 1 are connected, multiple sets of first fixing bolts 12 are inserted into the inside of the fixing ring 16. After insertion, the first fixing nut 15 is rotated to the outside of the first fixing bolt 12. Then, the first fixing bolt 12 and the first fixing nut 15 are used to fix and connect multiple sets of oil casing, which makes it easier for operators to fix and install the oil casing and can also seal the connection, thereby improving the practicality of the device.

[0027] Example 2: This example is basically the same as the previous example, except that the top and bottom of the reinforcing component 2 are symmetrically fitted with fixing plates 20, and the two sets of fixing plates 20 are symmetrically fixed with connecting plates 22 at their ends close to each other. The connecting plates 22 are fitted with second fixing bolts 21, and the second fixing bolts 21 penetrate the interior of the two sets of connecting plates 22. The bottom of the outer side of the second fixing bolts 21 is fitted with a second fixing nut 23.

[0028] Preferably, the fixing clamp 20 is made of an arc-shaped structure and is sleeved on the outside of the sealing fixing sleeve 17. The arc-shaped structure can be used to clamp the connected oil casing.

[0029] As can be seen from the above, after the connector body 1 is installed on the outside of the oil casing, the fixing clamp 20 is fitted on the inside of the reinforcing component 2. After the fitting is completed, the second fixing nut 23 is rotated to drive the two sets of fixing clamps 20 to move closer to each other. Then, the two sets of fixing clamps 20 are used to reinforce the connected oil casing, thereby improving the firmness of the device in fixing the oil casing.

[0030] Working principle: In use, first insert the connector body 1 onto the outside of the oil casing to be connected. After insertion, rotate the connector body 1 to drive the external thread 14 to fix the connection with the oil casing. After connection, place the sealing and fixing sleeve 17 on the outside of the oil casing. After installation, use the second sealing ring 13 to increase the sealing at the connection between the connector body 1 and the oil casing. After the two sets of connector bodies 1 are connected, insert multiple sets of first fixing bolts 12 into the inside of the fixing ring 16. After insertion, rotate the first fixing nut 15 to the outside of the first fixing bolt 12, and then use the first fixing... The bolt 12 and the first fixing nut 15 work together to fix multiple sets of oil casing, which facilitates the operator to fix and install the oil casing and can also seal the connection, thereby improving the practicality of the device. After the joint body 1 is installed on the outside of the oil casing, the fixing clamp 20 is fitted on the inside of the reinforcement component 2. After the fitting is completed, the second fixing nut 23 is rotated to drive the two sets of fixing clamps 20 to move closer to each other. Then, the two sets of fixing clamps 20 work together to reinforce the connected oil casing, thereby improving the device's firmness in fixing the oil casing.

[0031] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A fitting for oil casing, characterized in that: The device includes a connector body (1), which is symmetrically arranged in two sets. Two sets of fixing rings (16) are symmetrically fixed on the outer sides of the two sets of connector bodies (1) that are close to each other. A sealing groove (11) is provided at the middle position of the two sets of fixing rings (16) that are close to each other. A first sealing ring (10) is inserted into the sealing groove (11). Multiple sets of first fixing bolts (12) are inserted into the inner side of one set of fixing rings (16), and the first fixing bolts (12) penetrate the inner side of the two sets of fixing rings (16). A first fixing nut (15) is fitted on the outer side of the first fixing bolt (12). A sealing fixing sleeve (17) is fitted at the middle position of the outer side of the connector body (1). Two sets of second sealing rings (13) are provided on the inner side of the sealing fixing sleeve (17). A reinforcing component (2) is fitted on the outer side of the sealing fixing sleeve (17) that is away from the fixing ring (16).

2. The oil casing fitting as described in claim 1, characterized in that: The top and bottom of the reinforcement component (2) are symmetrically fitted with fixing plates (20). The two sets of fixing plates (20) are symmetrically fixed with connecting plates (22) at their ends close to each other. The connecting plates (22) are fitted with second fixing bolts (21), and the second fixing bolts (21) penetrate the interior of the two sets of connecting plates (22). The bottom of the outer side of the second fixing bolts (21) is fitted with a second fixing nut (23).

3. The oil casing fitting as described in claim 2, characterized in that: The fixing plate (20) is made of an arc-shaped structure and is sleeved on the outside of the sealing fixing sleeve (17).

4. The oil casing fitting as described in claim 1, characterized in that: The fixed ring (16) has eight sets of fixed holes evenly distributed inside, and the fixed holes are compatible with the first fixed bolt (12).

5. The oil casing fitting as described in claim 1, characterized in that: The inner side of the sealing sleeve (17) is provided with two sets of grooves, and the grooves are adapted to the second sealing ring (13).

6. The fitting for oil casing as described in claim 1, characterized in that: The outer side of the connector body (1) away from the fixing ring (16) is provided with an external thread (14), and the external thread (14) is compatible with the internal thread on the external oil casing.

7. The oil casing fitting as described in claim 1, characterized in that: The sealing sleeve (17) is made of rubber, and one end of the sealing sleeve (17) is fixedly connected to the outside of the connector body (1).

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