A petroleum casing connection structure

Abstract

The utility model belongs to the technical field of connecting structure, concretely speaking is a kind of petroleum casing connecting structure, including first pipe body;Its characterized in that: the first pipe body is sleeved with second pipe body, the side of second pipe body away from first pipe body is sleeved with first fixed plate, the side wall of first fixed plate is fixedly connected with multiple sets of spacers, the spacer is circular array setting, one side of the spacer is fixedly connected with pad, one side of the pad is equipped with the sliding slot, by adjusting the position of sliding block on limit shaft, after making clamping plate reach appropriate position, insert limit bolt and fix sliding block, so that clamping plate can play clamping positioning effect to second pipe body, and further make clamping plate can play clamping positioning effect to second pipe body, to improve the stability and reliability of device when working.

Description

Technical Field

[0001] This utility model belongs to the field of connection structure technology, specifically an oil casing connection structure. Background Technology

[0002] In the oil extraction industry, oil casing connection structures play a crucial role in ensuring the normal operation of oil wells. As oil exploration and extraction activities continue to advance into deeper and more complex strata, the performance requirements for oil casing connection structures are also increasing.

[0003] Currently, most sleeve connection structures use threaded connections. By rotating the sleeve, the external thread and the internal thread engage with each other to connect the two sleeves. During the engagement process, the friction between the threads provides a preload force for the connection, ensuring that the connection remains stable when the sleeve rotates, thereby preventing fluid leakage.

[0004] Most existing oil casing connection structures use threaded connections. Operators use tools to clamp the outer wall of the casing and manually turn the pipe wrench handle to rotate the casing, gradually engaging the threads. The torque is transmitted through the friction between the wrench and the casing, resulting in low rotation efficiency and high labor intensity. This makes the installation and disassembly of oil casing inconvenient. Therefore, an oil casing connection structure is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes an oil casing connection structure.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An oil casing connection structure of this utility model includes a first pipe body; characterized in that: a second pipe body is sleeved inside the first pipe body, a first fixing plate is sleeved on the side of the second pipe body away from the first pipe body, multiple sets of pads are fixedly connected to the side wall of the first fixing plate, the pads are arranged in a circular array, a pad block is fixedly connected to one side of the pad, a sliding groove is opened on one side of the pad block, a limiting shaft is fixedly connected in the sliding groove, a sliding block is slidably connected to the outer side wall of the limiting shaft, multiple sets of limiting plates are fixedly connected to the outer side wall of the first fixing plate, limiting holes are opened on the side wall of the limiting plate, fixing plates are fixedly connected to both sides of the sliding block, a through hole is opened on one side of the fixing plate, a limiting bolt is slidably connected in the through hole, and a clamping plate is fixedly connected to the bottom of the sliding block.

[0007] Preferably, a first fixing ring and a second fixing ring are fixedly connected to the surfaces of the first tube and the second tube, respectively. A first fixing shaft and a second fixing shaft are fixedly connected to the surfaces of the first fixing ring and the second fixing ring, respectively. A connecting plate is sleeved on the surface of the first fixing shaft, and the side of the connecting plate away from the first fixing shaft is sleeved with the second fixing shaft.

[0008] Preferably, a rubber sealing ring is provided at the connection between the first tube and the second tube, and the limiting plate and the clamping plate are arranged in a circumferential array on the side wall of the first fixing plate.

[0009] Preferably, a spring is fixedly connected to the side of the first fixing plate away from the pad, and a second fixing plate is fixedly connected to the side of the spring away from the first fixing plate.

[0010] Preferably, a rubber extrusion ring is provided inside the first tube, and a groove is provided on the inner wall of the first tube. An extrusion block is engaged in the groove, and the extrusion block is fixedly connected to the rubber extrusion ring.

[0011] Preferably, the plurality of first fixed shafts and the plurality of second fixed shafts are respectively arrayed on the surfaces of the first fixed ring and the second fixed ring.

[0012] The beneficial effects of this utility model are: 1. This utility model provides an oil casing connection structure. A limiting shaft is installed within a groove on the pad, allowing the sliding block to slide freely on the limiting shaft. Limiting plates are arranged in a circumferential array on the outer wall of the first fixed plate. Through holes are provided on the fixed plates on both sides of the sliding block, allowing the limiting bolts to slide within these holes and engage with the limiting holes on the limiting plates. By adjusting the position of the sliding block on the limiting shaft, the clamping plate is positioned appropriately, and then the limiting bolts are inserted to fix the sliding block. This allows the clamping plate to clamp and position the second pipe body, thereby improving the stability and reliability of the device during operation. 2. This utility model provides an oil casing connection structure. Through the established fixing structure, the first and second fixing rings enhance the connection strength between the first and second pipe bodies. When the casing is subjected to significant external force, they can disperse stress, preventing damage to the pipe body connection due to uneven stress, thus improving the stability of the device. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the surface structure of the first tube and the second tube of this utility model; Figure 4 This is a schematic diagram of the structure on both sides of the spring in this utility model; Figure 5 This is a cross-sectional view of the first tube and the second tube in this utility model; Figure 6 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0014] Legend: 1. First tube body; 101. Second tube body; 102. First fixing plate; 103. Pad plate; 104. Pad block; 105. Sliding block; 106. Limiting plate; 107. Limiting bolt; 108. Clamping plate; 2. First fixing ring; 201. Second fixing ring; 202. First fixing shaft; 203. Second fixing shaft; 204. Connecting plate; 3. Rubber sealing ring; 4. Spring; 401. Second fixing plate; 5. Rubber extrusion ring; 501. Extrusion block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Specific implementation examples are given below.

[0017] Please see Figures 1-6This utility model provides an oil casing connection structure, including a first pipe body 1; characterized in that: a second pipe body 101 is sleeved inside the first pipe body 1, a first fixing plate 102 is sleeved on the side of the second pipe body 101 away from the first pipe body 1, a plurality of pads 103 are fixedly connected to the side wall of the first fixing plate 102, the pads 103 are arranged in a circular array, a pad block 104 is fixedly connected to one side of the pads 103, a sliding groove is opened on one side of the pad block 104, a limiting shaft is fixedly connected in the sliding groove, a sliding block 105 is slidably connected to the outer side wall of the limiting shaft, a plurality of limiting plates 106 are fixedly connected to the outer side wall of the first fixing plate 102, a limiting hole is opened on the side wall of the limiting plate 106, a fixing plate is fixedly connected to both sides of the sliding block 105, a through hole is opened on one side of the fixing plate, a limiting bolt 107 is slidably connected in the through hole, and a clamping plate 108 is fixedly connected to the bottom of the sliding block 105. During operation... Threaded connections are inconvenient to install and disassemble, and after long-term tension and compression, they are prone to loosening, which may lead to an increase in the gap at the casing connection. Therefore, an oil casing connection structure is proposed. A limiting shaft is installed in the groove on the pad 104, allowing the sliding block 105 to slide freely on the limiting shaft. The limiting plates 106 are arranged in a circumferential array on the outer wall of the first fixed plate 102. Through holes are opened on the fixed plates on both sides of the sliding block 105, allowing the limiting bolts 107 to slide within the through holes and cooperate with the limiting holes on the limiting plates 106. By adjusting the position of the sliding block 105 on the limiting shaft, the clamping plate 108 is positioned appropriately, and the limiting bolts 107 are inserted to fix the sliding block 105. This allows the clamping plate 108 to clamp and position the second pipe 101, thereby improving the stability and reliability of the device during operation.

[0018] Furthermore, such as Figure 1 and Figure 2 As shown, a first fixing ring 2 and a second fixing ring 201 are fixedly connected to the surfaces of the first tube body 1 and the second tube body 101, respectively. A first fixing shaft 202 and a second fixing shaft 203 are fixedly connected to the surfaces of the first fixing ring 2 and the second fixing ring 201, respectively. A connecting plate 204 is sleeved on the surface of the first fixing shaft 202. The side of the connecting plate 204 away from the first fixing shaft 202 is sleeved with the second fixing shaft 203. During operation, the first fixing ring 2 and the second fixing ring 201 will enhance the connection strength between the first tube body 1 and the second tube body 101. When the sleeve is subjected to a large external force, they can disperse the stress and prevent the tube body connection from being damaged due to uneven force, thus ensuring the stability of the entire sleeve structure.

[0019] Furthermore, such as Figures 2-3As shown, a rubber sealing ring 3 is provided at the connection between the first tube body 1 and the second tube body 101. The limiting plate 106 and the clamping plate 108 are arranged in a circumferential array on the side wall of the first fixing plate 102. During operation, the rubber sealing ring 3 first plays a preliminary sealing role at the connection of the tube body, thereby enhancing the overall sealing performance.

[0020] Furthermore, such as Figure 4 As shown, a spring 4 is fixedly connected to the side of the first fixing plate 102 away from the pad 103, and a second fixing plate 401 is fixedly connected to the side of the spring 4 away from the first fixing plate 102. During operation, when the oil casing is subjected to vibration or impact, the spring 4 deforms to absorb and buffer part of the impact force. The second fixing plate 401 supports and fixes the spring 4, ensuring that the spring 4 can perform its buffering function normally and reducing the impact force from damaging the device.

[0021] Furthermore, such as Figures 4-5 As shown, a rubber extrusion ring 5 is provided inside the first tube body 1, and a groove is provided on the inner wall of the first tube body 1. An extrusion block 501 is snapped into the groove, and the extrusion block 501 is fixedly connected to the rubber extrusion ring 5. The plurality of first fixed shafts 202 and the plurality of second fixed shafts 203 are respectively arrayed on the surface of the first fixed ring 2 and the second fixed ring 201. During operation, the rubber extrusion ring 5 will fill the tiny gap between the tube bodies, and adaptively adjust the sealing effect when the internal fluid pressure changes, thereby enhancing the overall sealing performance.

[0022] Working Principle: Threaded connections are inconvenient to install and disassemble, and after long-term tension and compression, the threads are prone to loosening, potentially leading to increased clearance at the casing connection. Therefore, this paper proposes an oil casing connection structure. A limiting shaft is installed within a groove on the pad 104, allowing the sliding block 105 to slide freely on the limiting shaft. Limiting plates 106 are circumferentially arranged on the outer wall of the first fixing plate 102. Through holes are provided on the fixing plates on both sides of the sliding block 105, allowing the limiting bolts 107 to slide within these holes and engage with the limiting holes on the limiting plates 106. By adjusting the position of the sliding block 105 on the limiting shaft, and after the clamping plate 108 is in the appropriate position, the limiting bolts 107 are inserted to fix the sliding block 105. This allows the clamping plate 108 to clamp and position the second pipe body 101, thus enabling the clamping plate 108 to effectively hold and position the second pipe body 101. Body 101 serves a clamping and positioning function, thereby improving the stability and reliability of the device during operation. The first fixing ring 2 and the second fixing ring 201 further enhance the connection strength between the first tube body 1 and the second tube body 101. When the casing is subjected to a large external force, they can disperse the stress and prevent damage to the tube body connection due to uneven force, ensuring the stability of the entire casing structure. The rubber sealing ring 3 first provides a preliminary sealing effect at the tube body connection, thereby enhancing the overall sealing performance. When the oil casing is subjected to vibration or impact, the spring 4 deforms, absorbing and buffering part of the impact force. The second fixing plate 401 supports and fixes the spring 4, ensuring that the spring 4 can perform its buffering function normally and reducing the impact force from damaging the device. The rubber extrusion ring 5 then fills the tiny gaps between the tube bodies, adaptively adjusting the sealing effect when the internal fluid pressure changes, thereby enhancing the overall sealing performance.

[0023] 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 embodiments and descriptions in the specification 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 the claimed utility model.

Claims

1. An oil casing connection structure, comprising a first pipe body (1); characterized in that: A second tube (101) is sleeved inside the first tube (1). A first fixing plate (102) is sleeved on the side of the second tube (101) away from the first tube (1). Multiple sets of pads (103) are fixedly connected to the side wall of the first fixing plate (102). The pads (103) are arranged in a circular array. A pad block (104) is fixedly connected to one side of the pad (103). A sliding groove is opened on one side of the pad block (104). A limiting shaft is fixedly connected in the sliding groove. A sliding block (105) is slidably connected to the outer side wall of the limiting shaft. Multiple sets of limiting plates (106) are fixedly connected to the outer side wall of the first fixing plate (102). A limiting hole is opened on the side wall of the limiting plate (106). Fixing plates are fixedly connected to both sides of the sliding block (105). A through hole is opened on one side of the fixing plate. A limiting bolt (107) is slidably connected in the through hole. A clamping plate (108) is fixedly connected to the bottom of the sliding block (105).

2. The oil casing connection structure according to claim 1, characterized in that: The surfaces of the first tube (1) and the second tube (101) are respectively fixedly connected to a first fixing ring (2) and a second fixing ring (201). The surfaces of the first fixing ring (2) and the second fixing ring (201) are respectively fixedly connected to a first fixing shaft (202) and a second fixing shaft (203). A connecting plate (204) is sleeved on the surface of the first fixing shaft (202). The side of the connecting plate (204) away from the first fixing shaft (202) is sleeved with the second fixing shaft (203).

3. The oil casing connection structure according to claim 2, characterized in that: A rubber sealing ring (3) is provided at the connection between the first tube (1) and the second tube (101), and the limiting plate (106) and the clamping plate (108) are arranged in a circumferential array on the side wall of the first fixing plate (102).

4. The oil casing connection structure according to claim 1, characterized in that: A spring (4) is fixedly connected to the side of the first fixing plate (102) away from the pad (103), and a second fixing plate (401) is fixedly connected to the side of the spring (4) away from the first fixing plate (102).

5. The oil casing connection structure according to claim 1, characterized in that: A rubber extrusion ring (5) is provided inside the first tube (1). A groove is provided on the inner wall of the first tube (1). An extrusion block (501) is snapped into the groove. The extrusion block (501) is fixedly connected to the rubber extrusion ring (5).

6. The oil casing connection structure according to claim 5, characterized in that: Multiple first fixed shafts (202) and multiple second fixed shafts (203) are respectively arrayed on the surfaces of the first fixed ring (2) and the second fixed ring (201).

Images