Underground high-power heating device for horizontal well

Abstract

The utility model discloses an underground high-power heating device for a horizontal well, which comprises a casing pipe, a limiting sleeve is arranged at the top of the casing pipe, a signal transmission optical cable is inserted and connected into the limiting sleeve, the underground high-power heating device for the horizontal well further comprises a mounting seat, and the mounting seat is fixedly mounted at the top of the casing pipe. According to the scheme, after the signal transmission optical cable is connected with the limiting sleeve in an inserted mode, the attaching base horizontally moves on the top of the casing pipe, so that the mounting base and the attaching base are combined and attached to the surface of the limiting sleeve, then the arc-shaped plate rotates around the connecting column, continuous rotating force is applied to the connecting column through the elastic structure of the torsional spring, and the signal transmission optical cable is fixed to the limiting sleeve. Therefore, the arc-shaped plate can be always tightly attached to the surface of the signal transmission optical cable, compression resistance protection on the surface of the signal transmission optical cable is achieved, friction between the signal transmission optical cable and the limiting sleeve can be reduced, the situations that the optical cable is broken and signals are interfered are avoided, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and more specifically, to a high-power heating device for downhole horizontal wells. Background Technology

[0002] During crude oil extraction, some crude oils contain a large amount of gum, asphalt, and wax, which increases the viscosity and pour point of the crude oil, making it difficult for the crude oil to flow in pipelines and causing great difficulties in crude oil extraction. Therefore, corresponding heating devices are used. Existing downhole electric heating devices have a relatively closed installation structure, which makes it inconvenient to disassemble and repair them when damaged. At the same time, the devices are located deep underground, and there is a lack of recording of the temperature rise at different locations underground, making it difficult to judge the viscosity at different locations underground.

[0003] To address the aforementioned issues, patent document publication number CN219220384U discloses a horizontal well downhole electric heating device, comprising a casing with a tapered bottom and a groove formed at the bottom of the inner wall of the casing. The inner wall of the groove is engaged with the bottom of a ceramic tube frame. A snap-fit ​​ring is fixedly installed on the top of the ceramic tube frame, and the surface of the snap-fit ​​ring is provided with detachable components. An auxiliary component is provided on the inner wall of the ceramic tube frame.

[0004] However, in actual use, it still has some shortcomings. For example, the device is connected by a cover plate and a sealing protrusion that engages with the annular groove. It also has two sealing plates that wrap the armored cable and engage with the inner wall of the first through hole. At the same time, the limiting ring is threaded to the inner wall of the limiting groove. The snap ring engages with the mounting groove at the bottom of the mounting disc to facilitate the assembly and disassembly of the device. However, the signal transmission optical cable in the device is only fixed by the limiting sleeve and lacks pressure protection design. During downhole operations, the connection between the optical cable and the sleeve is easily subjected to friction or pulling, which may lead to the breakage of the optical cable or signal interference. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-power heating device for horizontal well downhole, so as to solve the problem that the signal transmission optical cable in the prior art is only fixed by a limiting sleeve and lacks pressure protection design.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-power heating device for horizontal well downhole, including a casing, a limiting sleeve provided at the top of the casing, and a signal transmission optical cable inserted and connected inside the limiting sleeve; the high-power heating device for horizontal well downhole also includes...

[0007] Mounting seat, the mounting seat is fixedly mounted on the top of the sleeve, a side plate is slidably mounted on the side of the mounting seat, and a fitting seat is fixedly connected to the side of the side plate opposite to the mounting seat. The surfaces of the mounting seat and the fitting seat are both in contact with the outer periphery of the limiting sleeve.

[0008] A connecting column is rotatably mounted on the top of the fitting seat. The connecting column is configured as a hollow structure. A fixing plate is fixedly connected to the surface of the connecting column. An arc-shaped plate is fixedly connected to one side of the fixing plate opposite to the connecting column in the length direction. The surface of the arc-shaped plate is in contact with the outer periphery of the signal transmission optical cable. A contact pad is provided on the top of the arc-shaped plate.

[0009] The device also includes an abutment groove, a fixing post, a connecting end, and a torsion spring. The abutment groove is formed on the surface of the connecting post. The fixing post is fixedly installed on the top surface of the fitting seat. The connecting ends are arranged opposite to each other on the top of the fixing post. The bottom of the connecting end is fixedly connected to one end of the torsion spring. The end of the torsion spring opposite to the connecting end is fixedly connected to the inside of the connecting post. The inner wall of the connecting end is rotatably connected to the outer wall of the top of the connecting post.

[0010] It also includes an auxiliary component, which is disposed on the side of the fitting seat surface opposite to the limiting sleeve.

[0011] The auxiliary components include a connecting plate, a spring, a movable column, a support plate, and a fixing block. The connecting plate is fixedly installed inside the fitting seat. One end of the spring is fixedly connected to the surface of the connecting plate, and the other end of the spring is fixedly connected to the inside of the movable column. The surface of the movable column is slidably connected to the inner wall of the fitting seat. The fixing block is fixedly installed on the outside of the movable column opposite to the connecting plate via the support plate. One side of the fixing block is set with a concave structure and engages with the inside of the abutment groove.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] In the above scheme, after the signal transmission optical cable is inserted into the limiting sleeve, the fitting seat is moved horizontally at the top of the sleeve, so that the mounting seat and the fitting seat merge and fit against the surface of the limiting sleeve. Then, the arc plate is rotated around the connecting column, so that the arc plate fits against the outside of the signal transmission optical cable. With the help of the torsion spring set between the connecting column and the connecting end, the elastic structure of the torsion spring applies a continuous rotational force to the connecting column, so that the arc plate can always fit tightly against the surface of the signal transmission optical cable. This achieves pressure protection against pressure on the surface of the signal transmission optical cable, and also reduces the friction between the signal transmission optical cable and the limiting sleeve, thereby avoiding the occurrence of optical cable breakage and signal interference, and improving the practicality of the device.

[0014] When the curved plate is attached to the surface of the signal transmission optical cable for protection, the spring inside the movable column drives the movable column to retract into the attachment seat, so that the fixing block installed on the top of the support plate engages with the abutment groove opened on the surface of the connecting column to further fix the connecting column and prevent the curved plate from separating from the surface of the signal transmission optical cable during the use of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional assembly drawing of the overall device of this utility model;

[0017] Figure 3 This is a schematic diagram of the connecting column, connecting end, and torsion spring of this utility model;

[0018] Figure 4 This is a schematic diagram of the auxiliary component structure of this utility model.

[0019] [Figure Labels]

[0020] 1. Sleeve; 2. Limiting sleeve; 3. Signal transmission optical cable; 4. Mounting base; 5. Side plate; 6. Fitting base; 7. Connecting post; 8. Fixing plate; 9. Arc plate; 10. Contact pad; 11. Abutment groove; 12. Fixing post; 13. Connecting end; 14. Torsion spring; 15. Auxiliary components; 151. Connecting plate; 152. Spring; 153. Movable post; 154. Support plate; 155. Fixing block. Detailed Implementation

[0021] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0022] As attached Figure 1 To be continued Figure 4 This utility model provides a high-power heating device for horizontal well downhole, including a casing 1, a limiting sleeve 2 at the top of the casing 1, and a signal transmission optical cable 3 inserted and connected inside the limiting sleeve 2. The high-power heating device for horizontal well downhole also includes...

[0023] Mounting seat 4 is fixedly installed on the top of sleeve 1. Side plate 5 is slidably installed on the side of mounting seat 4. Adhesive seat 6 is fixedly connected to the side of side plate 5 opposite to mounting seat 4. The surfaces of mounting seat 4 and adhesive seat 6 are both in contact with the outer periphery of limiting sleeve 2.

[0024] The connecting post 7 is rotatably mounted on the top of the fitting seat 6. The connecting post 7 is designed as a hollow structure. A fixing plate 8 is fixedly connected to the surface of the connecting post 7. An arc-shaped plate 9 is fixedly connected to one side of the fixing plate 8 opposite to the connecting post 7 along its length. The surface of the arc-shaped plate 9 is in contact with the outer periphery of the signal transmission optical cable 3. A contact pad 10 is provided on the top of the arc-shaped plate 9. By providing the contact pad 10 on the top of the arc-shaped plate 9, a gap can be formed between the surface of the signal transmission optical cable 3 and the top of the arc-shaped plate 9 to reduce the friction between the connection between the signal transmission optical cable 3 and the top of the arc-shaped plate 9, thereby protecting the surface of the signal transmission optical cable 3.

[0025] The bottom of the connecting post 7 is connected to the fitting seat 6 with a rough surface structure, which does not hinder the normal rotation of the connecting post 7, and at the same time can play a certain fixing effect after the connecting post 7 rotates, so as to cooperate with the torsion spring 14 to press the arc plate 9 tightly against the surface of the signal transmission optical cable 3.

[0026] The assembly also includes an abutment groove 11, a fixing post 12, a connecting end 13, and a torsion spring 14. The abutment groove 11 is formed on the surface of the connecting post 7. The fixing post 12 is fixedly installed on the top surface of the fitting seat 6. The connecting end 13 is disposed on both sides of the top of the fixing post 12. The bottom of the connecting end 13 is fixedly connected to one end of the torsion spring 14. The end of the torsion spring 14 opposite to the connecting end 13 is fixedly connected to the inside of the connecting post 7. The inner wall of the connecting end 13 is rotatably connected to the outer wall of the top of the connecting post 7.

[0027] It also includes an auxiliary component 15, which is disposed on the side of the surface of the fitting seat 6 relative to the limiting sleeve 2.

[0028] The auxiliary component 15 includes a connecting plate 151, a spring 152, a movable column 153, a support plate 154, and a fixing block 155. The connecting plate 151 is fixedly installed inside the fitting seat 6. One end of the spring 152 is fixedly connected to the surface of the connecting plate 151, and the other end of the spring 152 is fixedly connected to the inside of the movable column 153. The surface of the movable column 153 is slidably connected to the inner wall of the fitting seat 6. The fixing block 155 is fixedly installed on the outside of the movable column 153 opposite to the connecting plate 151 through the support plate 154. One side of the fixing block 155 is set with a concave structure and is engaged with the inside of the abutment groove 11.

[0029] The working process of this utility model is as follows: After the signal transmission optical cable 3 is inserted into the limiting sleeve 2, the fitting seat 6 is moved horizontally at the top of the sleeve 1, so that the mounting seat 4 and the fitting seat 6 merge and fit against the surface of the limiting sleeve 2. Then, the arc plate 9 is rotated around the connecting post 7, so that the arc plate 9 fits against the outside of the signal transmission optical cable 3. With the help of the torsion spring 14 set between the connecting post 7 and the connecting end 13, the elastic structure of the torsion spring 14 applies a continuous rotational force to the connecting post 7, so that the arc plate 9 can always fit tightly against the surface of the signal transmission optical cable 3, that is, protect the signal transmission optical cable 3.

[0030] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0031] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-power heating device for horizontal well downhole, comprising a casing (1), wherein a limiting sleeve (2) is provided at the top of the casing (1), and a signal transmission optical cable (3) is inserted and connected inside the limiting sleeve (2), characterized in that, The high-power heating device for horizontal well downhole also includes Mounting seat (4), the mounting seat (4) is fixedly installed on the top of the sleeve (1), a side plate (5) is slidably installed on the side of the mounting seat (4), and a fitting seat (6) is fixedly connected to the side of the side plate (5) opposite to the mounting seat (4). The surfaces of the mounting seat (4) and the fitting seat (6) are both in contact with the periphery of the limiting sleeve (2). A connecting post (7) is rotatably mounted on the top of the fitting seat (6). The connecting post (7) is configured as a hollow structure. A fixing plate (8) is fixedly connected to the surface of the connecting post (7). An arc-shaped plate (9) is fixedly connected to one side of the fixing plate (8) in the length direction opposite to the connecting post (7). The surface of the arc-shaped plate (9) is in contact with the periphery of the signal transmission optical cable (3). A contact pad (10) is provided on the top of the arc-shaped plate (9).

2. The high-power downhole heating device for horizontal wells according to claim 1, characterized in that, It also includes an abutment groove (11), a fixing post (12), a connecting end (13), and a torsion spring (14). The abutment groove (11) is opened on the surface of the connecting post (7). The fixing post (12) is fixedly installed on the top surface of the fitting seat (6). The connecting end (13) is arranged on both sides of the top of the fixing post (12). The bottom of the connecting end (13) is fixedly connected to one end of the torsion spring (14). The end of the torsion spring (14) opposite to the connecting end (13) is fixedly connected to the inside of the connecting post (7). The inner wall of the connecting end (13) is rotatably connected to the outer wall of the top of the connecting post (7).

3. The high-power downhole heating device for horizontal wells according to claim 1, characterized in that, It also includes an auxiliary component (15) disposed on one side of the surface of the fitting seat (6) relative to the limiting sleeve (2).

4. The high-power downhole heating device for horizontal wells according to claim 3, characterized in that, The auxiliary component (15) includes a connecting plate (151), a spring (152), a movable column (153), a support plate (154), and a fixing block (155). The connecting plate (151) is fixedly installed inside the fitting seat (6). One end of the spring (152) is fixedly connected to the surface of the connecting plate (151), and the other end of the spring (152) is fixedly connected to the inside of the movable column (153). The surface of the movable column (153) is slidably connected to the inner wall of the fitting seat (6). The fixing block (155) is fixedly installed outside the movable column (153) relative to the connecting plate (151) by the support plate (154). One side of the fixing block (155) is set with a concave structure and is engaged with the inside of the abutment groove (11).

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