Coiled tubing equipment

Abstract

The invention discloses coiled tubing equipment, and belongs to the technical field of oil field coiled tubing operation equipment. Comprising a main frame and a support which are formed by splicing rectangular pipes, a guider is arranged on the main frame, a blowout prevention pipe installation space is arranged on the support, the anti-toppling device further comprises anti-toppling legs, and after the main frame and the support are attached, the front side and the rear side of the attaching position are fastened through the anti-toppling legs respectively. Then, the main frame, the bracket and the anti-toppling legs are connected and fixed through bolt assemblies; the main frame is of a telescopic structure, and when used, the main frame is stretched step by step in a grading and layering mode to reach the height required by operation and is fixed. The anti-toppling leg is of a right triangle structure formed by welding rectangular pipes, a C-shaped clamping plate is arranged on the right-angle side of the anti-toppling leg, after the main frame and the support are attached, the attaching portion of the main frame and the support is fastened through the C-shaped clamping plate, and then the main frame, the support and the anti-toppling leg are tensioned and fixed through a bolt assembly; the device is convenient to disassemble, assemble and transport, safe and reliable to use and capable of meeting the requirements for use safety and operation convenience of coiled tubing equipment.

Description

Technical Field

[0001] The invention relates to a coiled tubing device, belonging to the technical field of oilfield coiled tubing operation equipment. Background Art

[0002] Coiled tubing is also called flexible tubing, coiled tubing or flexible tubing. Compared with conventional tubing connected by threads, coiled tubing is a long tubing that is wound on a tubing drum and straightened before being directly lowered into the well. Coiled tubing operations were originally used to lower into production tubing to complete specific well repair operations, such as well washing and salvage. By the 1990s, coiled tubing operation devices had been hailed as "universal operation equipment" and were widely used in oil and gas field well repair, drilling, completion, logging and other operations, playing an increasingly important role in oil and gas field exploration and development. As a mature oilfield operation equipment, the tubing of coiled tubing equipment is inserted into the injector, passed through the blowout preventer box, blowout preventer riser, blowout preventer and Christmas tree wellhead device, and then lowered into the well to complete the tubing lifting and lowering operations.

[0003] Coiled tubing mainly consists of two major structures, namely the tubing drum and the tubing injection device - the injection head. Whether it is a vehicle-mounted or skid-mounted coiled tubing, the injection head is usually lifted to the top of the wellhead by a crane during operation. The lower end of the injection head is connected to the blowout preventer and blowout preventer box. During the operation, the injection head is either suspended by a crane or supported by a special tower. The operation method of suspension by crane is mainly suitable for short-term well repair operations with shallow well depth. This operation method has the advantages of strong mobility and simple and convenient installation, but it also has the disadvantage of poor stability. Due to wind force, pressure fluctuations and other reasons, the injection head and the blowout preventer may fluctuate too much, and even cause the coiled tubing to break, resulting in major engineering accidents. Some domestic oil fields have expressly banned this operation method. The operation method supported by a tower is mainly suitable for long-term construction operations and occasions with high stability of the injection head. Its characteristics are stable and reliable structure.

[0004] The tower can stably bear the weight of the injection head and the downhole equipment. Because the injection head operates at a high height, usually up to 20 to 30 meters above the ground, the operating tower must also reach a corresponding height. In order to ensure transportation capacity, the tower size needs to be controlled. Usually, multiple skids can be stacked to achieve this, but its transportation occupies a large space, has high transportation costs, is difficult to assemble, and takes a long time to construct. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The technical problem to be solved by the present invention is to solve the problems of large space occupation, high transportation cost, complicated assembly and long construction time of the existing coiled tubing tower.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a continuous oil pipe equipment, including a main frame and a bracket assembled by rectangular tubes, the main frame is provided with a guide, the bracket is provided with a blowout preventer installation space, and it also includes anti-dumping legs. After the main frame and the bracket are fitted together, the front and rear sides of the fitting are respectively fastened by the anti-dumping legs, and then the main frame, the bracket and the anti-dumping legs are connected and fixed through a bolt assembly; the main frame is a retractable structure, and when in use, it is extended step by step through levels and layers to reach the required height for the operation and then fixed.

[0009] Furthermore, the anti-dumping leg is a right-angled triangle structure welded by a rectangular tube, and a C-shaped clamping plate is provided on its right-angled side. After the main frame and the bracket are fitted together, the C-shaped clamping plate fastens the fitting parts of the main frame and the bracket, and then the bolt assembly is passed through to tighten and fix the three.

[0010] Furthermore, the main frame includes a primary frame, a secondary frame and a tertiary frame. One side of the primary frame is in contact with the bracket, and a flange transport frame is provided on the other side. The secondary frame is arranged in the primary frame and is slidably connected thereto. The tertiary frame is arranged in the secondary frame and is slidably connected thereto. When the main frame is used, the primary frame, the secondary frame and the tertiary frame are extended step by step to the required height for the operation and are fixed by means of locking bolt assemblies.

[0011] Furthermore, the first-stage frame, the second-stage frame and the third-stage frame are all rectangular frame structures welded by rectangular tubes, and the structures of the three are the same. At least one symmetrical side of the rectangular frame structure is respectively provided with a slideway, and the lower ends of the second-stage frame and the third-stage frame are respectively provided with sliders. When the main frame is stretched, the slider of the second-stage frame slides along the slideway of the first-stage frame, and the slider of the third-stage frame slides along the slideway of the second-stage frame. After the main frame is fully stretched, all the sliders are tightened and fixed by bolt assemblies.

[0012] Furthermore, each side of at least one symmetrical side of the rectangular frame structure is respectively provided with a main slide and side slides arranged on both sides of the main slide, and the lower ends of the secondary frame and the tertiary frame are respectively provided with a main slider and side sliders located on both sides of the main slider. When the main frame is stretched, the main slider and the side slider of the secondary frame slide along the main slide and the side slide of the first frame respectively, and the main slider and the side slider of the tertiary frame slide along the main slide and the side slide of the secondary frame respectively.

[0013] Furthermore, the main slider and the top of the main slideway are fixed by at least two groups of bolt assemblies, and the side slider and the top of the side slideway are fixed by at least one group of bolt assemblies.

[0014] Furthermore, ladders are respectively arranged on the same side of the first-level frame, the second-level frame and the third-level frame, and the ladders are arranged away from the main sliding block. The three ladders are connected in sequence, and the top ends of the ladders are hinged. When the main frame is used, the first-level frame, the second-level frame and the third-level frame are extended step by step to the required working height and fixed by locking bolt assemblies, and then the ladders of the first-level frame, the second-level frame and the third-level frame are respectively pulled outward and fixed.

[0015] Furthermore, the first-level frame, the second-level frame and the third-level frame are respectively provided with storage channels on the same side, and the upper ends of the rectangular tubes on both sides of the storage channels are respectively provided with slide grooves, and sliding rods are respectively provided on both sides of the upper end of the ladder, and the sliding rods extend into the slide grooves and can slide up and down along them. When the main frame is used, the first-level frame, the second-level frame and the third-level frame are extended step by step to the required working height and fixed by locking bolt assemblies, and then the ladders of the first-level frame, the second-level frame and the third-level frame are respectively pulled outward and fixed; when pulling out the ladder, it is first lifted along the slide groove, and then pulled out, and then the upper end is allowed to slide downward along the slide groove until the lower end of the ladder abuts against the adjacent rectangular tube, and a strip hole is opened at the lower end of the ladder, and the lower end of the ladder and the rectangular tube abutting against it are fixed through the bolt assembly.

[0016] Furthermore, the lower end of the ladder of the three-stage frame abuts against the upper end of the two-stage frame, the lower end of the ladder of the two-stage frame abuts against the upper end of the one-stage frame, and the lower end of the ladder of the one-stage frame abuts against the lower end of the one-stage frame.

[0017] Furthermore, a platform plate is arranged at the upper end of the three-stage frame, a guide is arranged on the platform plate, two handrails are arranged on one side of the platform plate where the ladder is arranged on the three-stage frame, and the handrails are arranged obliquely on one side of the ladder.

[0018] (III) Beneficial effects

[0019] The above technical solution of the present invention has the following advantages:

[0020] 1. The tower of the present invention has good load-bearing capacity, and the injection head is placed on it for operation, which reduces the risk of hoisting operation; the height of the telescopic tower can be adjusted (one layer, two layers or three layers can be selected), which is suitable for various environments. In the transportation state, the tower can also be used as a transport skid to transport the lubricant preventer, etc., and a single tower can be used for two purposes, without the need for a separate lubricant preventer transport skid, saving cost and space.

[0021] 2. The present invention has a compact structure, reasonable layout, convenient operation, safe and reliable use, and can meet the requirements of safety and convenient operation of coiled tubing operation equipment.

[0022] 3. The present invention designs a retractable injection head tower, which can be extended step by step by level and layer to reach the required height for operation. After being fully retracted, the volume is small, which meets the requirements of road transportation. The main frame, bracket and anti-dumping legs are quickly assembled, and then the main frame is stretched to the required height and fixed, which is convenient to assemble, short in construction time, and time-saving and labor-saving in installation, disassembly and transportation.

[0023] In addition to the technical problems solved by the present invention, the technical features of the technical solutions constituted by the present invention, and the advantages brought about by the technical features of these technical solutions described above, other technical features of the present invention and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the extended structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the folded structure of the present invention.

[0027] Figure 3 It is a schematic diagram of the assembly of the primary frame and flange transport frame of the present invention.

[0028] Figure 4 It is a schematic diagram of the secondary frame of the present invention.

[0029] Figure 5 It is a schematic diagram of the three-stage frame of the present invention.

[0030] Figure 6 It is a schematic diagram of the anti-dumping leg of the present invention.

[0031] Figure 7 It is a schematic diagram of a ladder according to the present invention.

[0032] In the figure: 1. Main frame; 2. Bracket; 3. Guide; 4. Anti-dumping leg; 5. Bolt assembly; 6. C-type pallet; 7. First-level frame; 8. Second-level frame; 9. Third-level frame; 10. Flange transport frame; 11. Main slide; 12. Side slide; 13. Main slider; 14. Side slider; 15. Ladder; 16. Slide; 17. Slide bar; 18. Strip hole; 19. Platform board; 20. Handrail; 21. Storage channel. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1

[0036] like Figure 1 As shown, a continuous tubing equipment includes a main frame 1 and a bracket 2 assembled by rectangular tubes (mainly by welding), a guide 3 is provided on the main frame 1, and a blowout preventer installation space is provided on the bracket 2, which also includes an anti-dumping leg 4. After the main frame 1 and the bracket 2 are fitted together, the front and rear sides of the fitting are fastened by the anti-dumping leg 4 respectively, and then the main frame 1, the bracket 2 and the anti-dumping leg 4 are connected and fixed through the bolt assembly 5; it can be understood that during transportation, the main frame 1 and the bracket 2 are separated for transportation, which is more convenient. And the main frame 1 is a retractable structure, which is extended step by step by level and layer to reach the required height of the operation and fixed when in use. When not in use, it is retracted downward to reduce the height, which is further convenient for transportation and use. The installation, disassembly and transportation of the present invention saves time and effort.

[0037] Example 2

[0038] This embodiment is based on the embodiment 1, and further optimizes and refines the structure of the anti-dumping leg 4, specifically:

[0039] like Figure 6 As shown, the anti-dumping leg 4 is a right-angled triangle structure welded by a rectangular tube, which has a simple structure, is easy to manufacture, and has stable support. Two upper and lower C-shaped clamping plates 6 are arranged on its right-angled sides. After the main frame 1 and the bracket 2 are fitted together, the C-shaped clamping plate 6 fastens the fitting parts of the main frame 1 and the bracket 2, and then the bolt assembly 5 is passed through to tighten and fix the three. At least two groups of bolt assemblies 5 are installed on each C-shaped clamping plate 6, and the connection is firm.

[0040] Example 3

[0041] This embodiment is based on the embodiment 2, and further optimizes and refines the structure of the main frame 1, specifically:

[0042] like Figure 1-Figure 5 As shown, the main frame 1 includes a primary frame 7, a secondary frame 8 and a tertiary frame 9, one side of the primary frame 7 is in contact with the bracket 2, and the other side is provided with a flange transport frame 10, the secondary frame 8 is arranged in the primary frame 7 and slidably connected thereto, and the tertiary frame 9 is arranged in the secondary frame 8 and slidably connected thereto, when the main frame 1 is used, the primary frame 7, the secondary frame 8 and the tertiary frame 9 are extended step by step to reach the required height of the operation and fixed by the locking bolt assembly 5. It is understandable that a four-stage frame, a five-stage frame, etc. can also be provided.

[0043] Example 4

[0044] This embodiment is based on the embodiment 3, and further optimizes and refines the structure of the main frame 1, specifically:

[0045] The primary frame 7, the secondary frame 8 and the tertiary frame 9 are all rectangular frame structures welded by rectangular tubes, and the structures of the three are the same. The upper and lower ends of the rectangular frame structure are opened and connected, and three of the four sides are respectively provided with slideways. The lower ends of the secondary frame 8 and the tertiary frame 9 are respectively provided with sliders. When the main frame 1 is stretched, the slider of the secondary frame 8 slides along the slideway of the primary frame 7, and the slider of the tertiary frame 9 slides along the slideway of the secondary frame 8. After the main frame 1 is fully stretched, all the sliders are tightened and fixed to the corresponding unit frames by the bolt assembly 5.

[0046] Example 5

[0047] This embodiment is based on the embodiment 4, and further optimizes and refines the structure of the main frame 1, specifically:

[0048] Each of the three sides of the rectangular frame structure is provided with a main slide 11 and side slides 12 provided on both sides of the main slide 11. The lower ends of the secondary frame 8 and the tertiary frame 9 are provided with main sliders 13 and side sliders 14 provided on both sides of the main slider 13. When the main frame 1 is stretched, the main slider 13 and side sliders 14 of the secondary frame 8 slide along the main slide 11 and side slides 12 of the primary frame 7, respectively, and the main slider 13 and side sliders 14 of the tertiary frame 9 slide along the main slide 11 and side slides 12 of the secondary frame 8, respectively. The main slide 11 and side slide 12 are provided to make the sliding more stable.

[0049] Example 6

[0050] This embodiment is based on the embodiment 5, and further optimizes and refines the structure of the main frame 1, specifically:

[0051] The main slider 13 and the top of the main slide 11 are fixed by at least two groups of bolt assemblies 5, and the side slider 14 and the top of the side slide 12 are fixed by at least one group of bolt assemblies 5, so the connection is stable and reliable.

[0052] Example 7

[0053] This embodiment is based on the embodiment 6, and further optimizes and refines the structure of the main frame 1, specifically:

[0054] The same side of the first-stage frame 7, the second-stage frame 8 and the third-stage frame 9 is respectively provided with a ladder 15, and the ladder 15 is as shown in FIG. Figure 7 As shown, the ladder 15 is arranged to avoid the main slider 13 (that is, the main slider 13 is not arranged on the side where the ladder 15 is arranged), and the three ladders 15 are connected in sequence. The top of the ladder 15 is hinged and the lower end is rotatable. When the main frame 1 is used, the first-level frame 7, the second-level frame 8 and the third-level frame 9 are extended step by step to the required working height and fixed by the locking bolt assembly 5, and then the ladders 15 of the first-level frame 7, the second-level frame 8 and the third-level frame 9 are pulled out and fixed respectively for easy climbing.

[0055] Example 8

[0056] This embodiment is based on the embodiment 7, and further optimizes and refines the structure of the ladder 15, specifically:

[0057] The first-stage frame 7, the second-stage frame 8 and the third-stage frame 9 are provided with storage channels 21 on the same side, and the upper ends of the rectangular tubes on both sides of the storage channels 21 are provided with slide grooves 16, which penetrate the corresponding rectangular tubes. The upper ends of the ladder 15 are provided with slide bars 17 on both sides, and the slide bars 17 extend into the slide grooves 16 and can slide up and down along them, so as to realize the articulation of the ladder 15, and the position of the ladder 15 can also be adjusted up and down. When the main frame 1 is used, the first-stage frame 7, the second-stage frame 8 and the third-stage frame 9 are extended step by step to the required height of the operation and fixed by the locking bolt assembly 5, and then the ladders 15 of the first-stage frame 7, the second-stage frame 8 and the third-stage frame 9 are pulled out and fixed respectively. When pulling out the ladder 15, first lift it along the slide groove 16, then pull it out, and then let its upper end slide downward along the slide groove 16 until the lower end of the ladder 15 abuts against the adjacent rectangular tube. The lower end of the ladder 15 is provided with a strip hole 18 (for convenient insertion of bolts), and the lower end of the ladder 15 and the rectangular tube abutting against it are fixed with a bolt assembly 5.

[0058] In this embodiment, the lower end of the ladder 15 of the third-level frame 9 abuts against the upper end of the second-level frame 8, the lower end of the ladder 15 of the second-level frame 8 abuts against the upper end of the first-level frame 7, and the lower end of the ladder 15 of the first-level frame 7 abuts against the lower end of the first-level frame 7, which is convenient for connection and use.

[0059] Example 9

[0060] This embodiment is based on the embodiment 8, and further optimizes and refines the structure of the main frame 1, specifically:

[0061] A platform plate 19 is arranged at the upper end of the three-stage frame 9, on which a guide 3 is arranged. The platform plate 19 is located on one side of the three-stage frame 9 where a ladder 15 is arranged, and two handrails 20 are arranged. The handrails 20 are arranged obliquely on one side of the ladder 15 to facilitate operators to climb to the top.

[0062] When using the present invention, the main frame 1 and the bracket 2 are transported to the designated location, and then the two are connected by the anti-dumping leg 4, and then the primary frame 7, the secondary frame 8 and the tertiary frame 9 of the main frame 1 are stretched by a lifting device and the like, and the bolt assembly 5 (a combination of a nut and a screw) is locked to fix them, and then the respective ladders 15 are pulled out and fixed; when recycling, the ladder 15 is retracted, and then the primary frame 7, the secondary frame 8 and the tertiary frame 9 of the main frame 1 are retracted, and the anti-dumping leg 4, the main frame 1 and the bracket 2 are disassembled, and then the transportation can be carried out. The anti-dumping leg 4 of the present invention can be removed, and will not take up too much transportation space during transportation, and the triangular support has a better anti-dumping effect.

[0063] In addition, in the description of the invention, unless otherwise specified, the terms "multiple", "multiple roots", "multiple groups" are used to mean two or more than two, and "several", "several roots", "several groups" are used to mean one or more than one. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0064] The specific implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A coiled tubing equipment, comprising a main frame and a bracket assembled by rectangular tubes, wherein the main frame is provided with a guide, and the bracket is provided with a lubricant preventer installation space, characterized in that: It also includes anti-dumping legs. After the main frame and the bracket are fitted together, the front and rear sides of the fitting part are respectively fastened by the anti-dumping legs, and then the main frame, the bracket and the anti-dumping legs are connected and fixed through a bolt assembly; The main frame is a retractable structure, which can be extended step by step through layers and grades to reach the required height for operation and then fixed when in use.

2. The coiled tubing equipment according to claim 1, characterized in that: The anti-dumping leg is a right-angled triangle structure welded by a rectangular tube, and a C-shaped clamping plate is provided on the right-angled side. After the main frame and the bracket are fitted together, the C-shaped clamping plate fastens the fitting parts of the main frame and the bracket, and then the bolt assembly is passed to tighten and fix the three.

3. The coiled tubing equipment according to claim 2, characterized in that: The main frame includes a primary frame, a secondary frame and a tertiary frame. One side of the primary frame is in contact with the bracket, and a flange transport frame is arranged on the other side. The secondary frame is arranged in the primary frame and is slidably connected thereto. The tertiary frame is arranged in the secondary frame and is slidably connected thereto. When the main frame is used, the primary frame, the secondary frame and the tertiary frame are extended step by step to the required height for operation and are fixed by means of locking bolt assemblies.

4. The coiled tubing equipment according to claim 3, characterized in that: The first-stage frame, the second-stage frame and the third-stage frame are all rectangular frame structures welded by rectangular tubes, and the structures of the three are the same. At least one symmetrical side of the rectangular frame structure is respectively provided with a slideway, and the lower ends of the second-stage frame and the third-stage frame are respectively provided with sliders. When the main frame is stretched, the slider of the second-stage frame slides along the slideway of the first-stage frame, and the slider of the third-stage frame slides along the slideway of the second-stage frame. After the main frame is fully stretched, all the sliders are tightened and fixed by bolt assemblies.

5. The coiled tubing equipment according to claim 4, characterized in that: A main slide and side slides arranged on both sides of the main slide are respectively arranged on each side of at least one symmetrical side of the rectangular frame structure, and a main slider and side sliders located on both sides of the main slider are respectively arranged at the lower ends of the secondary frame and the tertiary frame. When the main frame is stretched, the main slider and the side slider of the secondary frame slide along the main slide and the side slide of the primary frame respectively, and the main slider and the side slider of the tertiary frame slide along the main slide and the side slide of the secondary frame respectively.

6. The coiled tubing equipment according to claim 5, characterized in that: The main slider and the top of the main slideway are fixed by at least two groups of bolt assemblies, and the side slider and the top of the side slideway are fixed by at least one group of bolt assemblies.

7. The coiled tubing equipment according to claim 6, characterized in that: Ladders are respectively arranged on the same side of the first-stage frame, the second-stage frame and the third-stage frame, and the ladders are arranged away from the main sliding block. The three ladders are connected in sequence, and the top ends of the ladders are hinged. When the main frame is used, the first-stage frame, the second-stage frame and the third-stage frame are extended step by step to the required working height and fixed by the locking bolt assembly, and then the ladders of the first-stage frame, the second-stage frame and the third-stage frame are respectively pulled outward and fixed.

8. The coiled tubing equipment according to claim 7, characterized in that: The first-level frame, the second-level frame and the third-level frame are respectively provided with storage channels on the same side, and slide grooves are respectively provided at the upper ends of the rectangular tubes on both sides of the storage channels, and sliding bars are respectively provided on both sides of the upper end of the ladder, and the sliding bars extend into the slide grooves and can slide up and down along the slide grooves. When the main frame is used, the first-level frame, the second-level frame and the third-level frame are extended step by step to the required working height and fixed by locking bolt assemblies, and then the ladders of the first-level frame, the second-level frame and the third-level frame are respectively pulled out and fixed; when pulling out the ladder, it is first lifted along the slide groove, and then pulled out, and then the upper end is allowed to slide downward along the slide groove until the lower end of the ladder abuts against the adjacent rectangular tube, and a strip hole is provided at the lower end of the ladder, and the lower end of the ladder and the rectangular tube abutting against it are fixed through the bolt assembly.

9. The coiled tubing equipment according to claim 8, characterized in that: The lower end of the ladder of the three-stage frame abuts against the upper end of the two-stage frame, the lower end of the ladder of the two-stage frame abuts against the upper end of the one-stage frame, and the lower end of the ladder of the one-stage frame abuts against the lower end of the one-stage frame.

10. The coiled tubing equipment according to claim 9, characterized in that: A platform plate is arranged at the upper end of the three-stage frame, a guide is arranged on the platform plate, and two handrails are arranged on one side of the platform plate where a ladder is arranged on the three-stage frame, and the handrails are arranged obliquely on one side of the ladder.

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