A downhole coiled tubing heating device for oil and gas wells

Abstract

This utility model relates to the field of oil and gas well operation technology, specifically to a heating device for downhole coiled tubing in oil and gas wells. It includes a heating element, with a mounting base fitted at the top of the heating element. A rod is inserted into the mounting base, and the rod is inserted into the interior of the heating element. A slot is formed on one side of the mounting base, and a locking block is engaged within the slot. The locking block is slidably connected to the other side of the mounting base. An installation groove is formed on the other side of the mounting base, and a mounting piece is fixedly connected to the end of the locking block away from the slot. By connecting the heating element to the mounting base and then engaging the rod with the locking block, the two mounting bases can be conveniently connected. This not only allows a single heating element to be stably installed outside the tubing but also allows two heating elements to be stably connected, resulting in better fluid transport performance in the tubing.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas well operation technology, and more specifically, to a heating device for downhole coiled tubing in oil and gas wells. Background Technology

[0002] The coiled tubing used in oil production engineering is a major component of the oil production machinery system. It is a long-distance, seamless, flexible tubular material that can be wound on a drum. It is made of high-strength alloy steel or composite materials, which can avoid the joint leakage problem of traditional segmented tubing. At the same time, it can be quickly lowered into or pulled out of the well through the drum, adapting to complex working conditions.

[0003] In existing technologies, heating devices are typically installed on the outside of oil pipes to prevent the oil pipe temperature from dropping too low, thus ensuring the normal flow of liquid inside the oil pipe. The heating devices are usually installed using Velcro, which makes installation very convenient.

[0004] However, in actual use, due to the long length of the oil pipe, the two heating devices cannot fit tightly together and will slip due to gravity, resulting in some parts of the oil pipe not being heated, which will affect the delivery of the liquid inside the oil pipe. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a heating device for downhole coiled tubing in oil and gas wells, which solves the problem that in the prior art, two heating devices cannot be tightly fitted together, and will slip off due to gravity, resulting in local tubing that cannot be heated, thus affecting the delivery effect of the liquid inside the tubing.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a heating device for downhole coiled tubing in oil and gas wells, including a heating element, a mounting base sleeved on the top of the heating element, a rod inserted into the inside of the mounting base, the rod being inserted into the inside of the heating element, a slot being formed on one side of the inside of the mounting base, a locking block being engaged inside the slot, and the locking block being slidably connected to the other side of the inside of the mounting base.

[0007] The mounting base has an installation groove on the other side of its interior. The end of the locking block away from the groove is fixedly connected to a mounting plate. The end of the mounting plate away from the locking block is fixedly connected to a pull rope. The end of the pull rope away from the mounting plate is fixedly connected to a rotating rod. An elastic element is sleeved on the outside of the pull rope.

[0008] The mounting base has two limiting grooves inside, the rotating rod has a sliding groove inside, a slider is slidably connected inside the sliding groove, the slider has two placement grooves inside, an elastic element two is fixedly connected to the inner wall of the placement groove, a placement piece is fixedly connected to the other end of the elastic element two, a limiting block is fixedly connected to the end of the placement piece away from the elastic element two, a pull rod is fixedly connected to the right side of the slider, and a pull block is fixedly connected to the right end of the pull rod.

[0009] The locking block is slidably connected inside the mounting groove, the mounting plate is slidably connected inside the mounting groove, the pull rope is slidably connected inside the mounting groove, and the rotating rod is rotatably connected inside the mounting base.

[0010] One end of the elastic element is fixedly connected to the inner wall of the mounting groove, and the other end of the elastic element is fixedly connected to the mounting plate.

[0011] The end of the limiting block away from the placement piece is an inclined block structure and engages with the inside of the limiting groove. The limiting block is slidably connected inside the placement groove.

[0012] The placement piece is slidably connected inside the placement groove, the pull rod is slidably connected inside the slide groove, and the pull block is slidably connected inside the mounting base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In the above solution, by connecting the external mounting base of the heating element and then using the plug rod and the locking block to snap together, the two mounting bases can be easily connected. This not only allows a single heating element to be stably installed outside the oil pipe, but also allows the two heating elements to be stably connected, thereby improving the liquid delivery effect of the oil pipe. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a right view of the heating element of this utility model after assembly;

[0017] Figure 3 For the present utility model Figure 2 Cross-sectional view of the structure at point AA;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0019] Figure 5 For the present utility model Figure 2 Cross-sectional view of the structure at point BB;

[0020] Figure 6 For the present utility model Figure 5 Enlarged view of the structure at point B in the middle;

[0021] Figure 7 For the present utility model Figure 2 Cross-sectional view of the structure at point CC.

[0022] [Figure Labels]

[0023] 1. Heating element; 2. Mounting base; 3. Insert rod; 4. Pull rod; 5. Pull block; 6. Limiting groove; 7. Slot; 8. Slot; 9. Mounting groove; 10. Mounting piece; 11. Pull rope; 12. Elastic component one; 13. Rotating rod; 14. Slide groove; 15. Sliding block; 16. Placement groove; 17. Elastic component two; 18. Placement piece; 19. Limiting block. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figures 1 to 7 This utility model provides a technical solution: a heating device for downhole coiled tubing in oil and gas wells, including a heating element 1, a mounting base 2 sleeved on the top of the heating element 1, a rod 3 inserted into the inside of the mounting base 2, the rod 3 being inserted into the inside of the heating element 1, so that the heating element 1 and the mounting base 2 can be connected, a slot 7 is opened on one side of the inside of the mounting base 2, a locking block 8 is locked inside the slot 7, and the locking block 8 is slidably connected to the other side of the inside of the mounting base 2, so that the heating element 1 can be stably installed on the tubing, and the heating element 1 and the mounting base 2 can be stably connected.

[0026] When multiple heating elements 1 need to be installed on the oil pipe, the mounting base 2 is placed on the upper side of the heating element 1, and the locking block 8 is pulled and slid into the interior of the mounting base 2. Then, the insertion rod 3 is inserted through the mounting base 2 into the interior of the heating element 1, so that two heating elements 1 are brought together and the upper side of the insertion rod 3 can be inserted into the interior of another heating element 1. At this time, by moving the locking block 8 to the rear, the locking block 8 can be inserted through the insertion rod 3 and engaged with the interior of the locking groove 7, so that the heating element 1 and the insertion rod 3 are limited. This not only allows a single heating element 1 to be stably installed outside the oil pipe, but also allows two heating elements 1 to be stably connected, thereby improving the liquid transport effect of the oil pipe.

[0027] Example 2: Based on Example 1, to facilitate the pulling of the locking block 8, a mounting groove 9 is provided on the other side of the interior of the mounting base 2. The locking block 8 is slidably connected inside the mounting groove 9, which provides space for the locking block 8 to move. A mounting piece 10 is fixedly connected to the end of the locking block 8 away from the locking groove 7. The mounting piece 10 is slidably connected inside the mounting groove 9, which limits the mounting piece 10, allowing it to slide smoothly. A pull rope 11 is fixedly connected to the end of the mounting piece 10 away from the locking block 8. The sliding connection is inside the mounting groove 9, which limits the pull rope 11 so that it will not deviate when sliding. The end of the pull rope 11 away from the mounting plate 10 is fixedly connected to a rotating rod 13. The rotating rod 13 is rotatably connected inside the mounting base 2, which limits the rotating rod 13 so that it can rotate smoothly. An elastic element 12 is sleeved on the outside of the pull rope 11. One end of the elastic element 12 is fixedly connected to the inner wall of the mounting groove 9, and the other end of the elastic element 12 is fixedly connected to the mounting plate 10.

[0028] When the locking block 8 needs to be pulled, the rotating rod 13 is rotated so that one end of the pull rope 11 is wound around it, and the other end of the pull rope 11 pulls the mounting plate 10 to compress the elastic element 12 and deform it, so that the mounting plate 10 pulls the locking block 8 into the interior of the mounting groove 9. Conversely, by releasing the rotating rod 13, the elastic element 12 is reset, and the elastic element 12 pushes the mounting plate 10 to move backward, so that the mounting plate 10 pushes the locking block 8 to engage with the interior of the locking groove 7.

[0029] Example 3: Based on Example 2, in order to limit the movement of the rotating rod 13, two limiting grooves 6 are provided inside the mounting base 2, and a sliding groove 14 is provided inside the rotating rod 13. A slider 15 is slidably connected inside the sliding groove 14. The sliding groove 14 limits the movement of the slider 15, allowing the slider 15 to slide smoothly. Two placement grooves 16 are provided inside the slider 15. An elastic element 2 17 is fixedly connected to the inner wall of the placement groove 16, and a placement piece 18 is fixedly connected to the other end of the elastic element 2 17. The placement piece 18 is slidably connected inside the placement groove 16, and the placement groove 16 limits the movement of the placement piece 18, allowing the placement piece 18 to slide smoothly. The piece 18 will not deviate when sliding. The end of the piece 18 away from the elastic element 17 is fixedly connected to the limiting block 19. The end of the limiting block 19 away from the piece 18 is a slanted block structure and engages with the inside of the limiting groove 6, so that the limiting block 19 can slide conveniently inside the slide groove 14 and limit the rotating rod 13. The limiting block 19 is slidably connected inside the placement groove 16, which provides movement space for the limiting block 19. The right side of the slider 15 is fixedly connected to the pull rod 4, which is slidably connected inside the slide groove 14. The right end of the pull rod 4 is fixedly connected to the pull block 5, which is slidably connected inside the mounting base 2.

[0030] When the rotating rod 13 needs to be rotated, the pull block 5 is pulled, causing the pull block 5 to move the slider 15 outward via the pull rod 4. This causes the slider 15 to move the limiting groove 6 outward, allowing the inclined surface of the limiting groove 6 to slide against the rotating rod 13 and into the interior of the slide groove 14. This allows the placement groove 16 to deform by the compression of the elastic element 17 by the placement piece 18. As the pull block 5 moves, the placement groove 16 slides inside the slide groove 14. When the right side of the slider 15 is in contact with the right side of the inner wall of the slide groove 14... After the engagement, the second elastic element 17 can perform a reset movement, which in turn allows the second elastic element 17 to push the placement piece 18 to move outward, so that the placement piece 18 can push the limiting block 19 into the notch in the inner wall of the slide groove 14. At this time, the pull block 5 can be rotated, so that the pull block 5 can drive the rotating rod 13 to rotate through the limiting block 19. Conversely, by pushing the pull block 5 to the left, under the same principle, when the left side of the slider 15 is in contact with the left side of the inner wall of the slide groove 14, the limiting block 19 can be engaged with the inside of the limiting groove 6, thereby limiting the rotating rod 13.

[0031] The working process of this utility model is as follows:

[0032] When multiple heating elements 1 need to be installed on the oil pipe, the mounting base 2 is sleeved on the upper side of the heating element 1. By pulling the pull block 5, the pull block 5 can drive the slider 15 to move outward via the pull rod 4. This causes the slider 15 to drive the limiting groove 6 to move outward, allowing the inclined surface of the limiting groove 6 to slide against the rotating rod 13 and into the interior of the slide groove 14. This allows the placement groove 16 to deform by the compression of the elastic element 17 by the placement piece 18. As the pull block 5 moves, the placement groove 16... Sliding inside the slide groove 14, when the right side of the slider 15 comes into contact with the right side of the inner wall of the slide groove 14, the elastic element 17 can perform a reset movement, thereby causing the elastic element 17 to push the placement piece 18 to move outward, so that the placement piece 18 can push the limiting block 19 into the notch in the inner wall of the slide groove 14. At this time, the pull block 5 can be rotated, so that the pull block 5 can drive the rotating rod 13 to rotate through the limiting block 19, so that the rotating rod 13 can wrap around one end of the pull rope 11, so that the other end of the pull rope 11 can pull the mounting piece. The elastic element 12 is deformed by the compression of the mounting piece 10, which pulls the locking block 8 into the mounting groove 9. The insert rod 3 then passes through the mounting base 2 and is inserted into the heating element 1, bringing the two heating elements 1 together. The upper side of the insert rod 3 is then inserted into the other heating element 1. At this point, by releasing the rotating rod 13, the elastic element 12 returns to its original position, pushing the mounting piece 10 backward. This causes the mounting piece 10 to push the locking block 8 into the groove 7. The heating element 1 and the insert rod 3 are then positioned. By pushing the pull block 5 to the left, the left side of the slider 15 comes into contact with the left side of the inner wall of the slide groove 14, and the limiting block 19 engages with the inside of the limiting groove 6. This limits the rotating rod 13, resulting in a high stability between the rotating rod 13 and the locking block 8. This not only allows a single heating element 1 to be stably installed outside the oil pipe, but also allows two heating elements 1 to be stably connected, thus improving the oil pipe's liquid delivery effect.

[0033] 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.

[0034] 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.

[0035] 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 heating device for downhole coiled tubing in oil and gas wells, characterized in that, The device includes a heating element (1), with a mounting base (2) fitted on the top of the heating element (1). A rod (3) is inserted into the inside of the mounting base (2), and the rod (3) is inserted into the inside of the heating element (1). A slot (7) is provided on one side of the inside of the mounting base (2), and a locking block (8) is engaged inside the slot (7). The locking block (8) is slidably connected to the other side of the inside of the mounting base (2).

2. The downhole coiled tubing heating device for oil and gas wells according to claim 1, characterized in that, The mounting base (2) has an installation groove (9) on the other side of its interior. The end of the locking block (8) away from the groove (7) is fixedly connected to a mounting piece (10). The end of the mounting piece (10) away from the locking block (8) is fixedly connected to a pull rope (11). The end of the pull rope (11) away from the mounting piece (10) is fixedly connected to a rotating rod (13). An elastic element (12) is sleeved on the outside of the pull rope (11).

3. The downhole coiled tubing heating device for oil and gas wells according to claim 2, characterized in that, The mounting base (2) has two limiting grooves (6) inside, the rotating rod (13) has a sliding groove (14) inside, the sliding groove (14) is slidably connected to a slider (15), the slider (15) has two placement grooves (16) inside, the inner wall of the placement groove (16) is fixedly connected to an elastic element two (17), the other end of the elastic element two (17) is fixedly connected to a placement piece (18), the end of the placement piece (18) away from the elastic element two (17) is fixedly connected to a limiting block (19), the right side of the slider (15) is fixedly connected to a pull rod (4), and the right end of the pull rod (4) is fixedly connected to a pull block (5).

4. The downhole coiled tubing heating device for oil and gas wells according to claim 2, characterized in that, The card block (8) is slidably connected inside the mounting groove (9), the mounting piece (10) is slidably connected inside the mounting groove (9), the pull rope (11) is slidably connected inside the mounting groove (9), and the rotating rod (13) is rotatably connected inside the mounting base (2).

5. The downhole coiled tubing heating device for oil and gas wells according to claim 2, characterized in that, One end of the elastic element (12) is fixedly connected to the inner wall of the mounting groove (9), and the other end of the elastic element (12) is fixedly connected to the mounting plate (10).

6. The downhole coiled tubing heating device for oil and gas wells according to claim 3, characterized in that, The end of the limiting block (19) away from the placement piece (18) is a slanted block structure and engages with the inside of the limiting groove (6). The limiting block (19) is slidably connected inside the placement groove (16).

7. The downhole coiled tubing heating device for oil and gas wells according to claim 3, characterized in that, The placement piece (18) is slidably connected inside the placement groove (16), the pull rod (4) is slidably connected inside the slide groove (14), and the pull block (5) is slidably connected inside the mounting base (2).

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