A continuous tubing capable of mounting various types of wires and a wire mounting device.

Abstract

This invention discloses a continuous tubing capable of mounting various types of wires, comprising a connecting pipe body covered with a protective layer made of non-metallic material. Multiple mounting slots for placing wires are arranged along the length of the outer wall of the protective layer, and each mounting slot has a sealing strip at its opening, one end of which is connected to the edge of the mounting slot. The invention also includes a wire mounting device for mounting wires onto the continuous tubing, comprising an upper fixing ring, a lower fixing ring, and a wire mounter disposed between the upper and lower fixing rings. The number of wire mounters is the same as the number of mounting slots, and each wire mounter corresponds to one mounting slot. Each wire mounter includes a bracket with its upper and lower ends connected to the upper and lower fixing rings respectively. The upper part of the bracket has a first V-shaped support frame, and the lower part has a second V-shaped support frame. This invention can mount various types of corresponding wires as needed, is low-cost, expandable, effectively protects the wires, and is easy to use.

Description

Technical Field

[0001] This invention belongs to the field of oil extraction technology, specifically relating to a continuous tubing and a wiring device capable of installing various types of wires. Background Technology

[0002] In oil extraction, it is necessary to establish connection channels and communication lines between the surface and the oil reservoir. This often requires the use of coiled tubing. Coiled tubing plays a crucial role in oil extraction, making the process more intelligent and efficient. Coiled tubing is made of low-carbon alloy steel and has excellent flexibility; it is also known as flexible tubing. A single roll of coiled tubing can be several kilometers long. Coiled tubing can replace conventional tubing for many operations. Coiled tubing equipment features pressurized operation, continuous tripping, small size, fast operation cycle, and low cost. It is widely used in oil and gas field workover, drilling, completion, and logging operations, and can handle various tasks such as sand flushing, drilling bridge plugs, gas lift, liquid nitrogen injection, paraffin removal, fluid drainage, acid squeezing, and testing.

[0003] Coiled tubing provides a direct access path to the wellbore, enables wellbore temperature and pressure data acquisition, and powers the ESP (Electric Submersible Pump). Therefore, coiled tubing requires the use of various cables. Current methods primarily involve bundling sampling tubing, injection lines, ESP power cables, temperature monitoring cables, and pressure lines to the production tubing string. These cables and lines are all bound to the outer surface of the production tubing string. During installation, these lines and cables are highly susceptible to damage from impacts. Any impact will halt the installation process. Due to the specific operating environment, damaged lines and cables must be replaced entirely, as downhole connections are strictly prohibited.

[0004] Chinese invention patent No. 2022100624654, entitled "A Corrosion-Resistant Cable-Laying Composite Continuous Oil Tube with Metal Reinforcement", discloses a corrosion-resistant cable-laying composite continuous oil tube with metal reinforcement, including an inner lining layer, a reinforcing layer, a sliding wear-resistant layer, an outer protective layer, an insulating layer, and a transmission line. A metal-reinforced, corrosion-resistant cable-embedded composite coiled tubing protects the tubing by embedding multiple cables within the tubing body, preventing external oil and gas corrosion and wear damage during tripping operations. Data lines such as optical fibers, electrical cables, and signal cables embedded within the tubing connect downhole tools and uphole equipment, enabling the acquisition of bottom-hole information and data, real-time observation and monitoring of production operations, and achieving safe, efficient, and stable production. However, its drawbacks include: the multi-layered structure and the embedded optical fibers, electrical cables, and signal cables significantly increase the overall cost of the coiled tubing; these cables are also susceptible to damage over long-term use, and a problem with even one cable could render the entire coiled tubing unusable, resulting in substantial losses; furthermore, rapid technological advancements may lead to the fabrication of coiled tubing with insufficient power and transmission capacity to meet the demands of new technologies, necessitating the use of newer coiled tubing and resulting in waste.

[0005] In view of this, it is necessary to provide a continuous tubing that is lower in cost, scalable, and capable of safely carrying multiple types of tubing at the same time. Summary of the Invention

[0006] The purpose of this invention is to provide a continuous tubing and wiring device that can be installed with various corresponding wires as needed, is low in cost, has scalability, and can effectively protect the wires.

[0007] To address the aforementioned technical problems, this invention discloses a continuous tubing capable of housing various types of wires, comprising a connecting pipe body, an outer protective layer made of non-metallic material, and multiple mounting slots for placing wires arranged along the length of the outer wall of the protective layer, the multiple mounting slots being arranged around the axis of the connecting pipe body. The wires include at least one or more of the following: sampling pipe, injection line, electric submersible pump power cable, instrument power cable, temperature measuring cable, and pressure line; a sealing strip is provided at the opening of the mounting slot, one end of the sealing strip being connected to the edge of the mounting slot opening.

[0008] The sealing strip is provided with a snap-fit ​​sealing strip on the side that is not connected to the mounting groove. Corresponding to the snap-fit ​​sealing strip, a slot adapted to the snap-fit ​​sealing strip is provided on the outer edge of one side of the mounting groove opening.

[0009] The sealing strip does not extend above the surface of the protective layer.

[0010] The sealing strip is made of elastic material.

[0011] A wire mounting device for mounting various types of wires in a continuous tubing includes an upper fixing ring, a lower fixing ring, and a wire mounter disposed between the upper and lower fixing rings. The number of wire mounters is the same as the number of mounting slots, and each wire mounter corresponds to one mounting slot. The wire mounter includes a bracket whose upper and lower ends are respectively connected to the upper and lower fixing rings. The bracket has a gap with the surface of the protective layer. The upper part of the bracket is provided with a first V-shaped support frame, and the lower part is provided with a second V-shaped support frame. The first V-shaped support frame is fixed to the bracket by a first connecting rod, and the second V-shaped support frame is fixed to the bracket by a second connecting rod.

[0012] The first V-shaped support frame includes a first short side for supporting the cover strip and a first long side for moving the wiring device along the mounting groove; the second V-shaped support frame includes a second short side for supporting the cover strip and a second long side for moving the wiring device along the mounting groove.

[0013] The space between the first long side and the second long side is used for the wire to pass through. When installing the wire, the wire passes through the space between the first long side and the second long side and enters the mounting groove. The first long side extends into the mounting groove, and the second long side extends into the mounting groove. Both the first long side and the second long side move along the inner wall of the mounting groove.

[0014] Both the upper and lower fixing rings are detachably assembled from two semi-circular rings.

[0015] A stop bar parallel to the mounting groove is provided on the side of the first long side near the second V-shaped support frame to limit the wire. The distance between the stop bar and the protective layer is greater than the diameter of the wire.

[0016] The first long side is perpendicular to the axis of the upper fixed ring, and the angle between the first short side and the first long side is 30°-90°. The second long side is perpendicular to the axis of the upper fixed ring, and the angle between the second short side and the second long side is 30°-90°. The angle between the first short side and the first long side is not less than the angle between the second short side and the second long side.

[0017] Ball bearings are provided on the first short side, the first long side, the second short side, the second long side, and the inner sides of the upper and lower fixing rings.

[0018] During wire installation, the wire installation device is placed on the protective layer. The cover strip of the mounting slot to be installed is manually lifted, and then the first and second short sides are used to prop up the cover strip, creating a gap between the cover strip and the mounting slot for the wire to enter. At the same time, the first and second long sides are inserted into the mounting slot, and one end of the wire is then passed through the mounting slot between the first and second long sides. Next, the wire installation device is fixed, and the continuous tubing is dragged from top to bottom to pass through the wire installation device. As it passes through, the wire installation device inserts the wire into the mounting slot, and then the lower fixing ring resets the cover strip.

[0019] The continuous tubing capable of housing various types of wires and its method of use of the present invention have at least the following advantages:

[0020] 1. The continuous tubing has multiple mounting slots, which can effectively protect multiple wires separately. The mounting slots have sealing strips to prevent the wires from coming out of the mounting slots, and also to prevent external abrasion of the wires.

[0021] 2. The continuous tubing of the present invention has low production cost and relatively simple manufacturing process. The original wires used by the construction party can still be used, which can reduce costs and avoid waste. It avoids the significant increase in cost caused by simultaneously encapsulating multiple wires in the tubing. If a wire fails, it can be easily replaced.

[0022] 3. It allows for the selection of appropriate wiring for installation based on needs or construction projects, eliminating the need for unnecessary wiring and reducing waste. Furthermore, with the continuous emergence of new technologies, the installation slot facilitates the installation or replacement of new wiring, the development of new functions, the expansion of new construction projects, and the easy replacement of wiring or the upgrading and modification of equipment in the future.

[0023] 4. There is a gap between the wire and the mounting slot, which facilitates heat dissipation for some wires that require heat dissipation.

[0024] 5. The wiring device is ingeniously designed and can load multiple wires into the mounting slot while laying the conduit. It can realize automatic wiring during conduit laying, which is convenient and efficient, greatly improves wiring efficiency, and minimizes damage to the protective layer, mounting slot and wires. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the internal structure of a continuous tubing that can accommodate various types of wires.

[0026] Figure 2 This is a schematic diagram of a wiring device.

[0027] Figure 3 This is a schematic diagram of a wire passing through a wire assembler (only one wire assembler is shown for clarity).

[0028] Figure 4 This is a schematic diagram of the structure when a first V-shaped support frame supports the cover strip.

[0029] Figure 5 This is a schematic diagram of the internal structure of another type of continuous tubing that can accommodate various types of wires.

[0030] Figure 6 for Figure 5 A partially enlarged view of a continuous tubing system capable of housing various types of wires.

[0031] The numbers in the diagram are as follows: 1-Connecting pipe body, 2-Protective layer, 3-Mounting groove, 4-Sealing strip, 41-Snap-on sealing strip, 42-Snap-on groove, 5-Upper fixing ring, 6-Lower fixing ring, 7-Wire mounter, 71-Bracket, 72-First V-shaped support frame, 721-First connecting rod, 722-First short side, 723-First long side, 73-Second V-shaped support frame, 731-Second connecting rod, 732-Second short side, 733-Second long side, 74-Stop bar, 741-Slit, 75-Ball bearing, A-Wire. Detailed Implementation

[0032] The present invention will be further described in detail below through embodiments, so that those skilled in the art can implement it based on the description.

[0033] Example 1

[0034] Please see Figure 1 A continuous tubing capable of mounting various wires includes a connecting pipe body 1, which is wrapped with a protective layer 2 made of non-metallic material. Multiple mounting slots 3 for placing wires A are arranged along the length of the outer wall of the protective layer. These mounting slots 3 are arranged around the axis of the connecting pipe body 1. The wires A include at least one or more of the following: sampling pipe, injection line, electric submersible pump power cable, instrument power cable, temperature measuring cable, and pressure line. A sealing strip 4 is provided at the opening of each mounting slot, with one end of the sealing strip 4 connected to the edge of the opening of the mounting slot 3. Six to ten mounting slots 3 can be provided to meet the placement requirements of various wires. If more wires need to be installed, two or more thinner wires can be placed in the same mounting slot.

[0035] The sealing strip 4 is not higher than the surface of the protective layer 2 to reduce external wear on the sealing strip.

[0036] The sealing strip 4 is made of rubber.

[0037] Example 2

[0038] Please see Figure 2-3A wire mounting device for mounting various types of wires in continuous tubing includes an upper fixing ring 5, a lower fixing ring 6, and a wire mounter 7 disposed between the upper and lower fixing rings. The inner sides of the upper and lower fixing rings are provided with ball bearings 75, allowing the upper and lower fixing rings to slide along the surface of a protective layer 2. The number of wire mounters 7 is the same as the number of mounting slots 3, and each wire mounter 7 corresponds to one mounting slot 3. The wire mounter includes a bracket 71 whose upper and lower ends are respectively connected to the upper and lower fixing rings. The bracket 71 has a gap with the surface of the protective layer 2, meaning that the bracket does not contact the surface of the protective layer during wire mounting, thus avoiding unnecessary friction and reducing damage to the surface of the protective layer. The upper part of the bracket 71 is provided with a first V-shaped support frame 72, and the lower part is provided with a second V-shaped support frame 73. The first V-shaped support frame 72 is fixed to the bracket by a first connecting rod 721, and the second V-shaped support frame 73 is fixed to the bracket by a second connecting rod 731. In this embodiment, the planes where the first V-shaped support frame 72 and the second V-shaped support frame 73 are located are both perpendicular to the axis of the upper fixed ring. The first connecting rod 721 is connected to the inner end of the first long side 723, and the second connecting rod 731 is connected to the inner end of the second long side 733. Of course, the first connecting rod 721 can also be set as an L-shaped rod and connected to the outer end of the first long side (i.e., the corner of the first V-shaped support frame), and the first connecting rod is the same.

[0039] The first V-shaped support frame 72 includes a first short side 722 for supporting the cover strip 4 and a first long side 723 for moving the wiring device along the mounting groove; the second V-shaped support frame 73 includes a second short side 732 for supporting the cover strip and a second long side 733 for moving the wiring device along the mounting groove.

[0040] In this embodiment, the distance between the first V-shaped support frame 72 and the second V-shaped support frame 73 is not less than 5cm. When encountering a stiffer wire, a wire mounting device with a larger distance between the first V-shaped support frame and the second V-shaped support frame is used. The space between the first long side 723 and the second long side 733 is used for the wire A to pass through. During wire mounting, the wire passes through the space between the first long side 723 and the second long side 733 and enters the mounting groove 3. The first long side 723 and the second long side 733 extend into the mounting groove, and both the first long side and the second long side move along the inner wall of the mounting groove.

[0041] The upper fixing ring 5 and the lower fixing ring 6 are both composed of two detachable semi-circular rings to facilitate the installation and removal of the wiring device on the continuous tubing.

[0042] At the outer end of the first long side 723 (i.e., the end furthest from the mounting groove), near the second V-shaped support frame, there is a stop bar 74 parallel to the mounting groove, used to limit the wire. The distance between the stop bar 74 and the protective layer 2 is greater than the diameter of the wire. During wire installation, wire A passes through the slit 741 between the stop bar 74 and the protective layer 2 (or the bracket 71), which has a certain guiding effect on the wire, allowing the wire to enter the mounting groove in a better posture.

[0043] The first long side 723 is perpendicular to the axis of the upper fixing ring 5, and the angle between the first short side 722 and the first long side 723 is 30°-90°. The second long side is perpendicular to the axis of the upper fixing ring, and the angle between the second short side 732 and the second long side 733 is 30°-90°, and the angle between the first short side and the first long side is not less than the angle between the second short side and the second long side. To facilitate the entry of the wire, the first V-shaped support frame should support the cover strip to a greater extent. At the second V-shaped support frame, the wire has already formed a posture and tendency to enter the mounting groove, and part of it has already entered the mounting groove. Therefore, the degree of support of the cover strip by the second V-shaped support frame does not need to be the same as that of the first V-shaped support frame. The length of the second long side can be less than that of the first long side, and the angle between the second short side and the second long side can be less than that between the first short side and the first long side.

[0044] like Figure 4 As shown, during wiring, before lowering the conduit, the wiring device 7 is placed on the protective layer 2. The sealing strip 4 of the mounting groove 3 to be wired is manually lifted. Then, the first short side 722 and the second short side 732 are used to prop up the sealing strip 4 from the inside, creating a gap (opening) between the sealing strip 4 and the mounting groove 3 for the wire to enter. At the same time, the first long side 723 and the second long side 733 are inserted into the mounting groove 3. Then, one end of the wire is passed through the mounting groove 3 between the first long side 723 and the second long side 733 (e.g., ...). Figure 3 (As shown); then fix the wiring device 7 (the wiring device does not move), and start lowering the pipe. When lowering the pipe, move the continuous oil pipe from top to bottom so that it passes through the wiring device. When passing through, the wiring device 7 will put the wire A into the installation groove 3. Then lower the fixing ring 6 to reset the sealing strip 4.

[0045] Example 3

[0046] Similar to Embodiment 1, the difference lies in that ball bearings 75 are also provided on the first short side 722, the first long side 723, the second short side 732, and the second long side 733. The ball bearings 75 reduce frictional resistance and minimize damage to the protective layer 2. Columnar ball bearings can be fitted onto the first short side, the first long side, the second short side, and the second long side, while spherical ball bearings can be provided inside the upper and lower fixing rings. In this embodiment, the diameter of the ball bearings on the second long side 733 is larger than the diameter of the ball bearings on the first long side 723, to facilitate pushing the wire into the mounting groove 3 at the second V-shaped support frame 73 during wire assembly. Additionally, due to the obstruction of the first connecting rod, a ball bearing can be provided on each side of the first long side of the first connecting rod on the first long side 723, and the ball bearings on the second connecting rod also adopt this arrangement.

[0047] Example 4

[0048] Please see Figure 5-6 Similar to Embodiment 3, the difference lies in that the sealing strip has a raised snap-fit ​​sealing strip 41 on the side not connected to the mounting groove, and corresponding to the snap-fit ​​sealing strip 41, a snap groove 42 adapted to the snap-fit ​​sealing strip is provided on the outer edge of the opening side of the mounting groove 3. The snap groove 42 and the snap-fit ​​sealing strip 41 can give the sealing strip a certain degree of sealing, preventing excessive external substances from entering the mounting groove and abrading or corroding the wire.

[0049] During wiring, the first V-shaped support frame 72 and the second V-shaped support frame 73 partially support the cover strip 4. At this time, the snap-fit ​​seal strip 41 separates from the slot 42, so that the ball bearings on the lower fixing ring 6 are aligned with the snap-fit ​​seal strip and the slot. When the lower fixing ring passes the cover strip 4, the ball bearings 75 press the snap-fit ​​seal strip 41 into the slot 42, thereby achieving the reset of the cover strip. Alternatively, an elastic sheet that can exert pressure on the cover strip is provided on the lower side of the lower fixing ring. The inner side of the elastic sheet is provided with ball bearings. After the lower fixing ring drives the elastic sheet to pass, it presses the snap-fit ​​seal strip into the slot to achieve the reset.

[0050] Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wire mounting device for mounting various types of wires onto a continuous tubing, characterized in that, The coiled tubing includes a connecting pipe body, which is covered with a protective layer made of non-metallic material. Multiple mounting slots for placing wires are arranged along the length of the outer wall of the protective layer. These mounting slots are arranged around the axis of the connecting pipe body. The wires include at least one or more of the following: sampling pipe, injection line, electric submersible pump power cable, instrument power cable, temperature measuring cable, and pressure line. A sealing strip is provided at the opening of the mounting slot, with one end of the sealing strip connected to the edge of the mounting slot opening. The wiring device includes an upper fixing ring, a lower fixing ring, and a wiring loader disposed between the upper fixing ring and the lower fixing ring. The number of wiring loaders is the same as the number of mounting slots, and each wiring loader corresponds to one mounting slot. The wiring loader includes a bracket whose upper and lower ends are respectively connected to the upper fixing ring and the lower fixing ring. The bracket has a gap with the surface of the protective layer. The upper part of the bracket is provided with a first V-shaped support frame, and the lower part is provided with a second V-shaped support frame. The first V-shaped support frame is fixed to the bracket by a first connecting rod, and the second V-shaped support frame is fixed to the bracket by a second connecting rod. The first V-shaped support frame includes a first short side for supporting the cover strip and a first long side for moving the wiring device along the mounting groove; the second V-shaped support frame includes a second short side for supporting the cover strip and a second long side for moving the wiring device along the mounting groove. The space between the first long side and the second long side is used for the wire to pass through. When installing the wire, the wire passes through the space between the first long side and the second long side and enters the mounting groove. The first long side extends into the mounting groove, and the second long side extends into the mounting groove. Both the first long side and the second long side move along the inner wall of the mounting groove.

2. The wiring device according to claim 1, characterized in that, The sealing strip is provided with a snap-fit ​​sealing strip on the side that is not connected to the mounting groove. Corresponding to the snap-fit ​​sealing strip, a slot adapted to the snap-fit ​​sealing strip is provided on the outer edge of one side of the mounting groove opening.

3. The wiring device according to claim 1, characterized in that, The sealing strip does not extend above the surface of the protective layer.

4. The wiring device according to claim 1, characterized in that, The sealing strip is made of elastic material.

5. The wiring device according to claim 1, characterized in that, Both the upper and lower fixing rings are detachably assembled from two semi-circular rings.

6. The wiring device according to claim 1, characterized in that, A stop bar parallel to the mounting groove is provided on the side of the first long side near the second V-shaped support frame to limit the wire. The distance between the stop bar and the protective layer is greater than the diameter of the wire.

7. The wiring device according to claim 1, characterized in that, The first long side is perpendicular to the axis of the upper fixed ring, and the angle between the first short side and the first long side is 30°-90°. The second long side is perpendicular to the axis of the upper fixed ring, and the angle between the second short side and the second long side is 30°-90°. The angle between the first short side and the first long side is not less than the angle between the second short side and the second long side.

8. The wiring device according to claim 1, characterized in that, Ball bearings are provided on the first short side, the first long side, the second short side, the second long side, and the inner sides of the upper and lower fixing rings.

9. The wiring device according to claim 1, characterized in that, During wire installation, the wire installation device is placed on the protective layer. The cover strip of the mounting slot to be installed is manually lifted, and then the first and second short sides are used to prop up the cover strip, creating a gap between the cover strip and the mounting slot for the wire to enter. At the same time, the first and second long sides are inserted into the mounting slot, and one end of the wire is then passed through the mounting slot between the first and second long sides. Next, the wire installation device is fixed, and the continuous tubing is dragged from top to bottom to pass through the wire installation device. As it passes through, the wire installation device inserts the wire into the mounting slot, and then the lower fixing ring resets the cover strip.

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