Coiled tubing device and coiled tubing equipment

Abstract

The utility model provides a continuous oil pipe device and continuous oil pipe equipment, which comprise a mounting structure and continuous oil pipes, the continuous oil pipes are sequentially arranged layer by layer around at least part of the circumferential direction of the mounting structure to form a plurality of oil pipe layers; the protective part is arranged between at least two adjacent oil pipe layers of the multiple oil pipe layers. According to the technical scheme, the technical problem that in the prior art, part of coiled tubing is prone to being scratched can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coiled tubing technical field, specifically, relate to a coiled tubing device and coiled tubing equipment. BACKGROUND

[0002] At present, the scratch of coiled tubing has great influence on the service life of coiled tubing, if the scratch on the surface cannot be repaired in time, the scratch surface will become a thin wall part. Under the action of corrosive medium, the thin wall part will form a corrosion pit, so that the local corrosion current increases sharply, thus accelerating the corrosion speed of the coiled tubing, and making the coiled tubing first appear corrosion leakage failure at the scratch.

[0003] However, during the work and transportation, some coiled tubings are prone to scratches. CONTENT

[0004] The utility model discloses a coiled tubing device and coiled tubing equipment to solve the technical problem that some coiled tubings are prone to scratches in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a coiled tubing device is provided, comprising:

[0006] The installation structure and the coiled tubing, the coiled tubing is wound on the installation structure to form multiple layers of tubing layers;

[0007] The protective piece is arranged between at least two adjacent tubing layers of the multiple layers of tubing layers.

[0008] Further, the protective piece is arranged between the outermost layer of the coiled tubing and the second last layer of the coiled tubing, or the protective piece is arranged between the outermost layer of the coiled tubing and the second last layer of the coiled tubing and between the second last layer of the coiled tubing and the third last layer of the coiled tubing.

[0009] Further, when the coiled tubing is fully laid on each layer of the installation structure, the coiled tubing is arranged with n turns, and the number of turns of the coiled tubing on the outermost layer is m;

[0010] When m is greater than or equal to n / 2, the protective piece is arranged between the outermost layer of the coiled tubing and the second last layer of the coiled tubing;

[0011] When m is less than n / 2, the protective piece is arranged between the outermost layer of the coiled tubing and the second last layer of the coiled tubing and between the second last layer of the coiled tubing and the third last layer of the coiled tubing.

[0012] Further, the protection member comprises a first protection layer, the first protection layer is arranged around the outer ring of the second-to-last layer of the coiled tubing; and the length of the first protection layer is greater than or equal to the quarter of the arrangement length of the coiled tubing in the outermost layer along the arrangement direction of each layer of the coiled tubing.

[0013] Further, the protection member comprises a second protection layer, the second protection layer is arranged around the outer ring of the third-to-last layer of the coiled tubing;

[0014] wherein the length of the second protection layer is greater than or equal to the quarter of the arrangement length of the coiled tubing in the second-to-last layer or the third-to-last layer along the arrangement direction of each layer of the coiled tubing; and / or,

[0015] the thickness of the second protection layer is less than or equal to 10 mm; and / or,

[0016] the thickness of the first protection layer is less than or equal to 10 mm.

[0017] Further, the protection member is provided with a plurality of positioning grooves, the plurality of positioning grooves are arranged along the arrangement direction of each layer of the coiled tubing, each positioning groove is matched with the outer shape of the coiled tubing, so that each ring of the coiled tubing is limited in the positioning groove.

[0018] Further, the protection member has oppositely arranged first and second protection surfaces, the first and second protection surfaces are respectively arranged opposite to the adjacent two layers of the coiled tubing, and the first and / or second protection surfaces are provided with a plurality of positioning grooves.

[0019] Further, the protection member is a hollow plate; or,

[0020] the protection member is made of foam material or plastic material; or,

[0021] the protection member comprises a hollow plate and a non-slip cloth connected with each other, and the non-slip cloth is arranged on the plate surface of the hollow plate.

[0022] Further, the protection member is adsorbed or pasted on the coiled tubing; and / or,

[0023] the thickness of the protection member is greater than or equal to 2 mm; and / or,

[0024] the mounting structure is a roller.

[0025] Further, the coiled tubing device further comprises:

[0026] a first buffer, the first buffer is a hollow structure, the first buffer is sleeved on at least part of the coiled tubing, so that the at least part of the coiled tubing sleeved with the first buffer is arranged in the outermost layer of the coiled tubing; and / or,

[0027] The second buffer is installed on the wall of the mounting groove of the mounting structure, and is located between the mounting structure and the continuous tubing.

[0028] According to another aspect of the present invention, a coiled tubing apparatus is provided, comprising:

[0029] The coiled tubing unit described above;

[0030] The carrier, the coiled tubing unit is mounted on the carrier.

[0031] By applying the technical solution of this utility model, and by laying protective components between at least two adjacent tubing layers, the adjacent tubing layers can be effectively separated, avoiding contact wear between them and facilitating protection of the adjacent tubing layers. Therefore, it can solve the technical problem of scratches easily occurring in some continuous tubing in the prior art. Attached Figure Description

[0032] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0033] Figure 1 A schematic diagram of the mounting structure provided according to an embodiment of the present invention is shown from one perspective;

[0034] Figure 2 A schematic diagram of the mounting structure provided according to an embodiment of the present invention is shown from another perspective;

[0035] Figure 3 It shows Figure 1 KK direction diagram in the middle;

[0036] Figure 4 It shows Figure 3 Enlarged view of some of the structures in the image;

[0037] Figure 5 A schematic diagram of the structure of the protective component provided according to an embodiment of the present invention is shown;

[0038] Figure 6 A schematic diagram of the structure of a second buffer provided according to an embodiment of the present invention is shown.

[0039] The above figures include the following reference numerals:

[0040] 10. Installation structure;

[0041] 20. Continuous tubing; 21. Outermost layer; 22. Second to last layer; 23. Third to last layer;

[0042] 30, guard; 31, first guard layer; 32, second guard layer;

[0043] 50, second buffer. DETAILED DESCRIPTION

[0044] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] As Figures 1 to 6 shown, the embodiment one of the present application provides a coiled tubing device, the coiled tubing device comprises a mounting structure 10, a coiled tubing 20 and a guard 30, the coiled tubing 20 is arranged layer by layer in sequence around at least part of the circumference of the mounting structure 10 to form a multilayer tubing layer. The guard 30 is arranged between at least two tubing layers of the multilayer tubing layer.

[0046] The coiled tubing device provided in the embodiment can effectively separate the adjacent tubing layers by laying the guard between at least two adjacent tubing layers, so as to avoid the contact and abrasion between the adjacent tubing layers and facilitate the protection of the adjacent tubing layers.

[0047] It should be noted that the coiled tubing device in the embodiment is a device for storing or transferring or transporting the coiled tubing.

[0048] Specifically, the mounting structure 10 is a roller, and the coiled tubing 20 is arranged layer by layer in sequence around the circumference of the barrel of the roller.

[0049] Specifically, the material hardness of the guard 30 can be less than the material hardness of the coiled tubing 20, or the thickness of the guard 30 is as small as possible to form a soft structure. In this way, the adjacent tubing layers can be effectively protected by the guard 30.

[0050] Specifically, the guard 30 is arranged between the outermost layer 21 and the second outermost layer 22 of the coiled tubing 20; or the guard 30 is arranged between the outermost layer 21 and the second outermost layer 22 and between the second outermost layer 22 and the third outermost layer 23 of the coiled tubing 20. By arranging the guard 30 between the outermost layer 21 and the second outermost layer 22; or between the outermost layer 21 and the second outermost layer 22 and between the second outermost layer 22 and the third outermost layer 23 of the coiled tubing 20, even if the end of the coiled tubing 20 cannot be absolutely tensioned, the relative movement of the coiled tubing 20 in the outermost layer 21 and / or the second outermost layer 22 due to the looseness of the end of the coiled tubing 20 will be avoided, and the part of the coiled tubing 20 between the adjacent outermost layer 21 and the second outermost layer 22 and / or the second outermost layer 22 and the third outermost layer 23 will not directly rub due to the existence of the guard 30. In addition, since the material hardness of the guard 30 is less than the material hardness of the coiled tubing 20, even if the coiled tubing 20 moves relative to the guard 30 and rubs, the guard 30 will not cause the outer wall of the coiled tubing 20 to be scratched, thereby effectively protecting the coiled tubing 20. Therefore, the technical problem that the coiled tubing 20 is easily scratched due to the looseness of the end of the coiled tubing 20 which cannot be absolutely tensioned can be solved. Specifically, the part with more serious looseness is concentrated in the outermost layer 21 and the second outermost layer 22.

[0051] It should be noted that in one embodiment, the guard 30 can be arranged only between the outermost layer 21 and the second outermost layer 22. In another embodiment, the guard 30 can be arranged only between the outermost layer 21 and the second outermost layer 22 and between the second outermost layer 22 and the third outermost layer 23. In yet another embodiment, the guard 30 can be arranged between any two adjacent layers of the coiled tubing 20.

[0052] Specifically, when the coiled tubing 20 is fully laid in each layer of the installation structure 10, the coiled tubing 20 is arranged in n turns, and the number of turns of the coiled tubing 20 in the outermost layer 21 is m. Specifically, each layer of the coiled tubing 20 contains dozens of turns, and after each layer of the coiled tubing 20 is fully wound, the next layer will be wound by continuing to pipe, and thus several layers will be wound.

[0053] Specifically, when m≥n / 2, the guard 30 is arranged between the outermost layer 21 of the coiled tubing 20 and the second-to-last layer 22 of the coiled tubing 20. In this case, since the number of turns of the coiled tubing 20 of the outermost layer 21 is large, even if the part near the end of the outermost layer 21 of the coiled tubing 20 loosens, it is not likely to cause the part of the coiled tubing 20 located at the second-to-last layer 22 to be pulled out and loosened. Therefore, by using the above arrangement, only the guard 30 needs to be arranged between the outermost layer 21 of the coiled tubing 20 and the second-to-last layer 22 of the coiled tubing 20, which can effectively avoid the wear of the outermost layer 21 and the second-to-last layer 22 caused by the mutual movement between the outermost layer 21 and the second-to-last layer 22, and also avoid the complexity of the operation caused by arranging too many guards 30, and further avoid the situation that the coiled tubing 20 is not tightly wound and is more likely to loosen due to too many guards 30. In addition, the above arrangement can also effectively reduce the protection cost.

[0054] Specifically, when m≥n / 2, the guard 30 is arranged between the outermost layer 21 of the coiled tubing 20 and the second-to-last layer 22 of the coiled tubing 20. In this case, since the number of turns of the coiled tubing 20 of the outermost layer 21 is large, even if the part near the end of the outermost layer 21 of the coiled tubing 20 loosens, it is not likely to cause the part of the coiled tubing 20 located at the second-to-last layer 22 to be pulled out and loosened. Therefore, by using the above arrangement, only the guard 30 needs to be arranged between the outermost layer 21 of the coiled tubing 20 and the second-to-last layer 22 of the coiled tubing 20, which can effectively avoid the wear of the outermost layer 21 and the second-to-last layer 22 caused by the mutual movement between the outermost layer 21 and the second-to-last layer 22, and also avoid the complexity of the operation caused by arranging too many guards 30, and further avoid the situation that the coiled tubing 20 is not tightly wound and is more likely to loosen due to too many guards 30. In addition, the above arrangement can also effectively reduce the protection cost.

[0055] In the embodiment, the protective member 30 comprises a first protective layer 31, which is arranged around the outer ring of the penultimate layer 22 of the coiled tubing 20; along the arrangement direction of each layer of the coiled tubing 20, the length of the first protective layer 31 is greater than or equal to the quarter arrangement length of the coiled tubing 20 at the outermost layer 21. With such a structural arrangement, the outermost layer 21 of the coiled tubing 20 can be better covered and protected, and direct contact and friction between the outermost layer 21 of the coiled tubing 20 and the penultimate layer 22 of the coiled tubing 20 can be avoided.

[0056] It should be noted that the "first protective layer 31 arranged around the outer ring of the penultimate layer 22 of the coiled tubing 20" can be understood as the first protective layer 31 wrapping the side of the penultimate layer 22 close to the outermost layer 21 along the winding direction of the penultimate layer 22 of the coiled tubing 20, and the outermost layer 21 of the coiled tubing 20 can be completely laid on the first protective layer 31.

[0057] Specifically, the protective member 30 comprises a second protective layer 32, which is arranged around the outer ring of the antepenultimate layer 23 of the coiled tubing 20. Among them, along the arrangement direction of each layer of the coiled tubing 20, the length of the second protective layer 32 is greater than or equal to the length of the coiled tubing 20 at the penultimate layer 22 or the antepenultimate layer 23. In this way, the penultimate layer 22 and the antepenultimate layer 23 of the coiled tubing 20 can be better protected and completely spaced, and direct contact between the penultimate layer 22 and the antepenultimate layer 23 can be avoided.

[0058] It should be noted that the "second protective layer 32 arranged around the outer ring of the antepenultimate layer 23 of the coiled tubing 20" can be understood as the second protective layer 32 wrapping the side of the antepenultimate layer 23 close to the penultimate layer 22 along the winding direction of the antepenultimate layer 23 of the coiled tubing 20, and the part of the penultimate layer 22 of the coiled tubing 20 can be completely laid on the second protective layer 32.

[0059] Specifically, the thickness of the second protective layer 32 is less than or equal to the thickness of the first protective layer 31. With such a structural arrangement, the coiled tubing 20 can be prevented from being wound loosely between the antepenultimate layer 23 and the penultimate layer 22 due to the excessive thickness, the tightness of the coiled tubing 20 can be ensured, and the coiled tubing can be prevented from being easily pulled off due to the loose winding between the penultimate layer 22 and the antepenultimate layer 23.

[0060] Specifically, the thickness of the first protective layer 31 and / or the thickness of the second protective layer 32 is less than or equal to 10 mm, so that the penultimate layer 22 and / or the antepenultimate layer 23 can be prevented from being wound loosely due to the excessive thickness of the first protective layer 31 and / or the second protective layer 32.

[0061] In the embodiment, the protector 30 is provided with a plurality of positioning grooves arranged along the arrangement direction of each layer of the coiled tubing 20, and each positioning groove is matched with the outer shape of the coiled tubing 20 to limit each turn of the coiled tubing 20 in the positioning groove. With such a structure, the turns of the coiled tubing 20 can be better positioned and separated, and the adjacent turns of the coiled tubing 20 can be prevented from being directly rubbed to cause large wear, so that the coiled tubing 20 can be better protected.

[0062] Specifically, the protector 30 has oppositely arranged first and second protective surfaces for being arranged opposite to the adjacent two layers of the coiled tubing 20, and the first and / or second protective surface is provided with a plurality of positioning grooves. With such a structure, the two layers of the coiled tubing 20 on both sides of the protector 30 can be positioned synchronously by the single protector 30, so that the wear of the corresponding two layers of the coiled tubing 20 can be reduced.

[0063] Specifically, the protector 30 can be a hollow plate, which is simple to fix and can be fixed manually or by other methods such as adhesion and adsorption, and is simple, convenient and fast to operate. Specifically, the hollow plate can be made of polyethylene or polypropylene material, which can effectively prevent scratching and buffering. The PE (polyethylene) hollow plate has small density, light weight, easy cutting and splicing, convenient on-site operation, and can save transportation cost. In addition, the hollow plate has high strength, good wear resistance and toughness, long service life, and meets the transportation requirements. The cost is relatively low, which can reduce the cost while meeting the demand of preventing scratching.

[0064] Specifically, the protector 30 can be made of foam material or plastic material. Correspondingly, the protector 30 can be a PVC (polyvinyl chloride) plastic plate or a foamed plate, which can effectively play a buffering role between the adjacent two layers of the coiled tubing 20, so as to prevent the coiled tubing 20 from being scratched.

[0065] Specifically, the protector 30 includes a hollow plate and a non-slip cloth connected with each other, and the non-slip cloth is arranged on the plate surface of the hollow plate. In this way, the protector 30 can better prevent the coiled tubing 20 from being scratched.

[0066] In the embodiment, the protector 30 can be adsorbed or pasted on the coiled tubing 20 to improve the setting stability of the protector 30, so as to prevent the position of the protector 30 from changing when the coiled tubing 20 is loosened, thereby better improving the effect of preventing the coiled tubing 20 from being scratched.

[0067] Specifically, the thickness of the protective piece 30 is greater than or equal to 2 mm, so as to better effectively protect the coiled tubing 20 and better avoid scratches on the coiled tubing 20.

[0068] In the embodiment, the mounting structure 10 is a drum, so as to realize winding or releasing of the coiled tubing 20 by controlling the drum. Specifically, in the pipe uncoiling process, the drum wound with the coiled tubing 20 is placed on the pipe uncoiler after being fixed, the main shaft hole and the yoke hole of the drum are fixedly connected with the main shaft and the yoke shaft of the pipe uncoiler, the pipe uncoiler is driven to rotate after power is provided to the pipe uncoiler, the drum is driven to rotate through the main shaft and the yoke shaft, and the coiled tubing 20 is uncoiled.

[0069] Specifically, the coiled tubing device further comprises a first buffer piece, the first buffer piece is a hollow structure, and the first buffer piece is sleeved on at least part of the coiled tubing 20, so that at least part of the coiled tubing 20 sleeved with the first buffer piece is arranged on the outermost layer 21 of the coiled tubing 20. By adopting such a structure, the outermost layer 21 of the coiled tubing 20 can be better protected, and the outermost layer 21 of the coiled tubing 20 can be better prevented from being abraded by contacting the second layer 22 of the coiled tubing 20. Specifically, the first buffer piece is a buffer sleeve structure, and the first buffer piece can be made of a hollow plate, a plastic plate or a foamed plate.

[0070] Specifically, the coiled tubing device further comprises a second buffer piece 50 arranged on the wall surface of the mounting groove of the mounting structure 10, and the second buffer piece 50 is located between the mounting structure 10 and the coiled tubing 20. By adopting such a structure, the coiled tubing 20 in contact with the wall surface of the mounting groove can be prevented from being abraded by contacting the wall surface of the mounting groove, so as to better protect the coiled tubing 20. Specifically, the mounting groove comprises a first side wall, a bottom wall and a second side wall connected in sequence, the first side wall and the second side wall are oppositely arranged, the second buffer piece 50 can be arranged at at least one of the first side wall, the bottom wall and the second side wall, and the second buffer piece 50 is arranged in the mounting groove. Specifically, the second buffer piece 50 can be a buffer plate structure, and the second buffer piece 50 can be made of a hollow plate, a plastic plate or a foamed plate.

[0071] Embodiment two of the utility model provides a kind of coiled tubing equipment, and the coiled tubing equipment includes the coiled tubing device provided in embodiment one and carrier, and the coiled tubing device is installed on carrier. Specifically, carrier can be mounting bracket, and coiled tubing device is fixed on bracket, and bracket can be placed on transport equipment, to transport bracket and coiled tubing device by transport equipment.

[0072] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: effectively protecting and buffering the coiled tubing 20, reducing the protection workload, reducing the protection cost of the coiled tubing 20, and the protection operation is simple.

[0073] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0074] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application, unless otherwise specifically stated. It is to be understood that the drawings shown in the figures are not drawn to scale for the purpose of convenience in description. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification when appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the example embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0075] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0076] For purposes of the description hereinafter, spatial

[0077] In addition, it should be noted that the use of the terms "first", "second", etc., to describe a component having a defined property is only intended to distinguish between that component and another component having a different defined property, and is not otherwise intended to limit the scope of the present application unless otherwise indicated. Thus, use of the term "first" to describe a component is intended to connote that the component so qualified is not necessarily described first, but is intended to serve its qualification purpose in distinguishing that component from another component which is "second" in order of description.

[0078] The preferred embodiments of the present application have been described above with the intent to enable those skilled in the art to make and use it. Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Accordingly, the true scope of the present application is defined solely by the metes and bounds of the following claims.

Claims

1. A coiled tubing apparatus, characterized by, include: Mounting structure (10) and coiled tubing (20), the coiled tubing (20) being arranged in succession around at least a portion of the mounting structure (10) to form a multi-layer tubing layer; Protective component (30) is provided between at least two adjacent oil pipe layers of the multi-layer oil pipe layer. The protective component (30) is provided with a positioning groove for separating and positioning the continuous oil pipe (20).

2. The coiled tubing apparatus of claim 1, wherein, The protective element (30) is provided between the outermost layer (21) of the continuous tubing (20) and the penultimate layer (22) of the continuous tubing (20). Alternatively, the protective element (30) may be provided between the outermost layer (21) of the coiled tubing (20) and the penultimate layer (22) of the coiled tubing (20), and between the penultimate layer (22) of the coiled tubing (20) and the penultimate layer (23) of the coiled tubing (20).

3. The coiled tubing apparatus of claim 2, wherein, When the continuous tubing (20) is laid in each layer of the mounting structure (10), the continuous tubing (20) has n turns, and the number of turns of the continuous tubing (20) on the outermost layer (21) is m. Wherein, when m≥n / 2, the protective component (30) is provided between the outermost layer (21) of the continuous tubing (20) and the penultimate layer (22) of the continuous tubing (20). When m < n / 2, the protective element (30) is provided between the outermost layer (21) of the continuous tubing (20) and the penultimate layer (22) of the continuous tubing (20), and between the penultimate layer (22) of the continuous tubing (20) and the penultimate layer (23) of the continuous tubing (20).

4. The coiled tubing apparatus of claim 1, wherein, The protective element (30) includes a first protective layer (31) which is arranged around the outer ring of the penultimate layer (22) of the coiled tubing (20); along the arrangement direction of each layer of the coiled tubing (20), the length of the first protective layer (31) is greater than or equal to one-quarter of the arrangement length of the coiled tubing (20) in the outermost layer (21).

5. The coiled tubing apparatus of claim 4, wherein, The protective element (30) includes a second protective layer (32) which is disposed around the outer ring of the third-to-last layer (23) of the continuous tubing (20); Wherein, along the arrangement direction of each layer of the coiled tubing (20), the length of the second protective layer (32) is greater than or equal to one-quarter of the length of the coiled tubing (20) in the penultimate layer (22) or the penultimate layer (23); and / or, The thickness of the second protective layer (32) is less than or equal to 10 mm; and / or, The thickness of the first protective layer (31) is less than or equal to 10 mm.

6. The coiled tubing apparatus of claim 1, wherein, The protective component (30) is provided with a plurality of positioning grooves, which are arranged along the arrangement direction of each layer of the continuous tubing (20). Each positioning groove is adapted to the shape of the continuous tubing (20) so that each turn of the continuous tubing (20) is limited within the positioning groove.

7. The coiled tubing apparatus of claim 6, wherein, The guard (30) has oppositely arranged first and second guard surfaces for being arranged opposite to two adjacent layers of the coiled tubing (20) respectively, and the first and / or second guard surface is provided with the plurality of positioning grooves.

8. The coiled tubing device according to claim 1, characterized in that, The guard (30) is a hollow plate; or, The guard (30) is made of foam material or plastic material; or, The guard (30) comprises a hollow plate and a non-slip cloth connected to each other, and the non-slip cloth is arranged on the plate surface of the hollow plate.

9. The coiled tubing apparatus of claim 1, wherein, The guard (30) is adsorbed or pasted on the coiled tubing (20); and / or, The thickness of the guard (30) is greater than or equal to 2 mm; and / or, The mounting structure (10) is a roller.

10. The coiled tubing apparatus of claim 1, wherein, The coiled tubing device further comprises: A first buffer, which is a hollow structure, is sleeved on at least part of the coiled tubing (20) so that at least part of the coiled tubing (20) sleeved with the first buffer is arranged on the outermost layer (21) of the coiled tubing (20); and / or, A second buffer (50) is arranged on the wall surface of the mounting groove of the mounting structure (10), and the second buffer (50) is located between the mounting structure (10) and the coiled tubing (20).

11. A coiled tubing apparatus, characterized by, It comprises: The coiled tubing device according to any one of claims 1 to 10; A carrier, and the coiled tubing device is mounted on the carrier.

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