Patent Publication Number: US-10309171-B1

Title: Coiled tubing reel and coiled tubing vehicle

Description:
FIELD OF THE INVENTION 
     The present invention relates to the field of petroleum extraction equipment, particularly to a coiled tubing reel and a coiled tubing vehicle. 
     BACKGROUND OF THE INVENTION 
     As the coiled tubing technology is developed continuously, the demand for applying the coiled tubing technology in deep well and extra-deep well operations becomes more and more urgent and frequent. Halliburton has utilized variable outer diameter coiled tubing technique to improve the maximum vertical depth of operation to 10,000 m or above; Schlumberger and other companies have many success cases of coiled tubing operation in deep wells and extra-deep wells in depth greater than 6,000 m. However, the reels used by those companies for deep-well large-diameter coiled tubing operation are ultra-large, ultra-wide, and ultra-high. For example, the outer diameter of a reel for coiled tubing in 2″ outer diameter with 7,600 m capacity is as large as 4.5 m. Such coiled tubing reels can&#39;t be transported successfully under the limited road conditions in China. 
     In addition, compared with small reels or large reels without limited structural dimensions, extra-deep well coiled tubing reels involve many problems in terms of driving, owing to the high strength grade, large pipe diameter, great wall thickness, great length, heavy weight, and limited structural dimensions of coiled tubing wound on the coiled tubing reels; specifically, the existing reels for coiled tubing operation usually use two driving modes, wherein, one driving mode is a directly driving structure using a motor reducer, but the torque transferred in this driving mode is low and can&#39;t meet the winding requirement; the other driving mode is to use chain transmission structure with a motor reducer, but the structural dimensions are large, the transmission is not steady, and the chain may be worn easily. 
     Therefore, there is a demand for a coiled tubing reel that can increase the coiled tubing winding capacity, provides high transmission torque, and operates smoothly and steadily at a low speed, while meeting the requirement for transportation dimensions. 
     SUMMARY OF THE INVENTION 
     To overcome the drawbacks of low coiled tubing winding capacity, low transmission torque, and unsteady transmission in existing coiled tubing reels in the prior art while meeting the requirement for transportation dimensions, one object of the present invention is to provide a coiled tubing reel, which can increase the coiled tubing winding capacity, provides high transmission torque, and operates smoothly and steadily at a low speed while meeting the requirement for transportation dimensions. 
     Another object of the present invention is to provide a coiled tubing vehicle that includes the coiled tubing reel described above. 
     To attain the objects described above, in one aspect, the present invention provides a coiled tubing reel, which comprises a reel body assembly configured to wind a coiled tubing and a driving component configured to drive the reel body assembly, wherein, the reel body assembly comprises a reel body, a reel shaft, a transmission gear, and a first bearing block and a second bearing block that are oppositely arranged and spaced from each other, wherein the reel body is fixedly fitted on the reel shaft, the two ends of the reel shaft are rotatably arranged on the first bearing block and the second bearing block respectively, the transmission gear is fixed with respect to the reel shaft to drive the reel shaft to rotate, the driving component is fixedly arranged on the first bearing block and is at least partially disposed inside the reel body, and the driving component comprises a driving gear that is engaged with the transmission gear. 
     In the technical scheme described above, since the transmission gear is fixed with respect to the reel shaft to drive the reel shaft to rotate, the driving component comprises a driving gear engaged with a transmission gear, and the driving component is fixedly arranged on the first bearing block and at least partially disposed inside the reel body, such that the coiled tubing reel has a compact structure and is small in size, the width of the reel body in the axial direction can be increased while the requirement for transportation dimensions is met, and thereby the coiled tubing winding capacity can be increased; besides, since a gear driving mode is used, the transmission torque is high, and the coiled tubing reel can operate smoothly and steadily at a low speed. 
     In a second aspect, the present invention provides a coiled tubing vehicle, which comprises a vehicle body and the above-mentioned coiled tubing reel mounted on the vehicle body, wherein the first bearing block and the second bearing block are fixed with respect to the vehicle body respectively. 
     Other features and advantages of the present invention will be further detailed in the embodiments hereunder. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       The accompanying drawings are provided here to facilitate further understanding on the present invention, and constitute a part of this document. They are used in conjunction with the following embodiments to explain the present invention, but shall not be comprehended as constituting any limitation to the present invention. In the figures: 
         FIG. 1  is a schematic diagram of a part of the structure of the coiled tubing reel in a preferred embodiment of the present invention; 
         FIG. 2  is a schematic structural diagram of the reel support in the preferred embodiment of the present invention; 
         FIG. 3  is a left view of the coiled tubing reel in the preferred embodiment of the present invention; 
         FIG. 4  is a right view of the coiled tubing reel in the preferred embodiment of the present invention; 
         FIG. 5  is a schematic structural diagram of the braking component in the preferred embodiment of the present invention; 
         FIG. 6  is a broken-out sectional view of the braking component in the preferred embodiment of the present invention; 
         FIG. 7  is a schematic structural diagram of the tubing aligner assembly in the preferred embodiment of the present invention; 
         FIG. 8  is a schematic structural diagram of the clutch component in the preferred embodiment of the present invention; and 
         FIG. 9  is a sectional view A-A of the structure shown in  FIG. 8 . 
     
    
    
     BRIEF DESCRIPTION OF SYMBOLS 
       1 —reel body assembly;  11 —reel body;  111 —reel support;  1111 —annular cylinder;  1112 —radial column;  1113 —axial column;  1114 —circumferential column;  112 —spoke wheel;  12 —reel shaft;  13 —transmission gear;  14 —first bearing block;  15 —second bearing block;  16 —housing;  2 —driving component;  21 —driving gear;  22 —motor;  23 —reducer;  3 —frame-shaped base;  4 —braking component;  41 —mounting base;  42 —slide block;  43 —friction disk;  44 —screw rod;  45 —supporting member;  46 —lock nut; K—dovetail block;  47 —stopper; T—flange;  5 —tubing aligner assembly;  51 —first linking arm;  52 —second linking arm;  53 —rhombic shaft;  54 —first sprocket;  55 —second sprocket;  56 —forced alignment motor;  57 —slide tongue box assembly;  58 —roller bogie;  59 —adjustable counter;  50 —lubricant box;  6 —clutch component;  61 —driving portion;  611 —driving shaft;  612 —driving sprocket;  62 —driven portion;  621 —driven shaft;  622 —driven sprocket;  63 —clutch portion;  64 —switching portion;  7 —elevating component;  8 —hoisting component;  9 —container locking base; P 1 —internal manifold; P 2 —external manifold; F—check valve. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Hereunder some embodiments of the present invention will be detailed with reference to the accompanying drawings. It should be understood that the embodiments described here are only provided to describe and explain the present invention, but shall not be deemed as constituting any limitation to the present invention. 
     In the present invention, unless otherwise specified, the terms that denote the orientations are used as follows, for example: “top”, “bottom”, “left” and “right” usually refer to “top”, “bottom”, “left” and “right” as shown in the accompanying drawings; “inside” and “outside” refer to inside and outside in relation to the profiles of the components. 
     In one aspect, the present invention provides a coiled tubing reel, which comprises a reel body assembly  1  configured to wind a coiled tubing and a driving component  2  configured to drive the reel body assembly  1 , wherein, the reel body assembly  1  comprises a reel body  11 , a reel shaft  12 , a transmission gear  13 , and a first bearing block  14  and a second bearing block  15  that are oppositely arranged and spaced from each other, wherein the reel body  11  is fixedly fitted on the reel shaft  12 , the two ends of the reel shaft  12  are rotatably arranged on the first bearing block  14  and the second bearing block  15  respectively, the transmission gear  13  is fixed with respect to the reel shaft  12  to drive the reel shaft  12  to rotate, the driving component  2  is fixedly arranged on the first bearing block  14  and is at least partially disposed inside the reel body  11 , and the driving component  2  comprises a driving gear  21  that is engaged with the transmission gear  13 , and preferably, the driving component  2  further comprises a motor  22  and a reducer  23  that is connected between the motor  22  and the driving gear  21  and fixedly arranged on the first bearing block  14 , and at least a part of the structure of the reducer  23  is disposed inside the reel body  11 . In addition, the driving component  2  may be fixedly connected to the first bearing block  14  by bolts. 
     In the technical scheme described above, as shown in  FIG. 1 , since the transmission gear  12  is fixed with respect to the reel shaft  12  to drive the reel shaft  12  to rotate, the driving component  2  comprises a driving gear  21  engaged with a transmission gear  13 , and the driving component  2  is fixedly arranged on the first bearing block  14  and at least partially disposed inside the reel body  11 , such that the coiled tubing reel has a compact structure and is small in size, the width of the reel body  11  in the axial direction can be increased while the requirement for transportation dimensions is met, and thereby the coiled tubing winding capacity can be increased; besides, since a gear driving mode is used, the transmission torque is high, the coiled tubing reel can operate smoothly and steadily at a low speed, and the reel body  11  can be replaced conveniently. 
     In view that the transmission gear  13  is large in size and it is inconvenient to directly fix the transmission gear  13  to the reel shaft  12 , preferably, the reel body assembly  1  comprises a flange that is fixedly fitted on the reel shaft  12  and fixedly connected to the reel body  11 , so that the transmission gear  13  can be fixed with respect to the reel shaft  12  conveniently. The flange may be connected to the gear shaft  12  and the reel body  11  (e.g., radial columns  1112  described below) by welding, the transmission gear  13  may be fitted on the reel shaft  12  and fixedly connected to the flange. For example, the transmission gear  13  may be fixedly connected to the flange by bolts. In addition, to reduce the wear between the driving gear  21  and the transmission gear  13  and make the transmission more smooth and steady, as shown in  FIGS. 1 and 4 , the reel body assembly  1  further comprises an housing  16  outside the driving gear  21  and the transmission gear  13 , wherein the housing  16  accommodates lubricant inside it and is fixed with respect to the first bearing block  14 , and the housing  16  has an opening; the diameter of the flange is smaller than the diameter of the transmission gear  13 , the flange extends out from the opening, and there is clearance between the flange and the opening. In that way, the flange can rotate together with the reel shaft  12 , while the housing  16  doesn&#39;t rotate together with the reel shaft  12 . 
     Furthermore, to fixedly connect the flange to the reel body  11  conveniently and reduce the weight of the reel body  11  so as to increase the weight of wound coiled tubing, as shown in  FIGS. 1 and 2 , preferably, the reel body  11  comprises a reel support  111  configured to wind the coiled tubing and spoke wheels  112  arranged on the two ends of the reel support  111 , the reel support  111  comprises an annular cylinder  1111  and a plurality of radial columns  1112  that are arranged at an interval in the circumferential direction of the annular cylinder  1111  and extends in the radial direction of the annular cylinder  1111 , the two ends of each radial column  1112  are fixedly connected to the annular cylinder  1111  and the reel shaft  12  respectively, and the flange is fixedly connected to the radial columns  1112 . Here, it should be noted: since the driving gear  21  and the transmission gear  13  require lubrication with lubricant during their operation, usually the above-mentioned housing  16  that accommodates lubricant is arranged outside the driving gear  21  and the transmission gear  13 . Consequently, the transmission gear  13  can&#39;t be directly connected to the radial columns  1112  by welding; instead, a space for mounting the housing  16  has to be reserved. Therefore, the transmission gear  13  may be indirectly connected to the radial columns  1112  via the above-mentioned flange. In addition, to ensure the structural strength of the reel support  111 , the reel support  111  further comprises a plurality of axial columns  1113  that are arranged at an interval in the circumferential direction of the annular cylinder  1111  and extend in the axial direction of the annular cylinder  1111  and/or a plurality of circumferential columns  1114  that are arranged at an interval in the axial direction of the annular cylinder  1111  and extend in the circumferential direction of the annular cylinder  1111 . Wherein, the circumferential columns  1114  may be in an annular shape, and the radial columns  1112 , axial columns  1113 , and circumferential columns  1114  may be made of square steel. 
     To further increase the coiled tubing winding capacity of the reel body  11 , as shown in  FIGS. 3 and 4 , preferably, the coiled tubing reel comprises a frame-shaped base  3 , the reel body  11  is fitted inside the frame-shaped base  3 , and the first bearing block  14  and the second bearing block  15  are arranged on two opposite side edges of the frame-shaped base  3 . When the coiled tubing reel is mounted on a vehicle body for transportation, the frame-shaped base  3  may be directly fixed to the vehicle body. For example, the frame-shaped base  3  may be fixed to a trailer by means of a container locking base  9 . In addition, the vehicle body may have a space for accommodating the part of the reel body  11  below the frame-shaped base  3  (at the side away from the reel shaft  12 ), and thereby the height of the reel body  11  on which the coiled tubing is wound can be decreased, which is to say, the coiled tubing winding capacity of the reel body  11  can be increased. Moreover, to mount the reel body assembly  1  on the vehicle body conveniently, a hoisting component  8  may be mounted on the reel body  11 , and the two ends of the hoisting component  8  may be hinged via a pin shaft to the first bearing block  14  and the second bearing block  15  respectively. Besides, as shown in  FIG. 4 , an internal manifold P 1  configured to connect the coiled tubing and an external manifold P 2  configured to connect an external pump truck may be arranged on the second bearing block  15 . 
     The reel body  11  may produce high rotational inertia impact under road conditions in the transportation process of the coiled tubing reel, and, if chain tighteners are used to fix the reel body  11 , the chains and hangers of the chain tighteners may be deformed or broken easily, and consequently the reel body  11  can&#39;t be fixed reliably. In view of that problem, to fix the reel body  11  reliably, as shown in  FIGS. 1, 2, 3, and 4 , preferably, the reel body  11  comprises a reel support  111  configured to wind the coiled tubing and spoke wheels  112  arranged on the two ends of the reel support  111 , and the coiled tubing reel comprises braking component  4  that are arranged on the frame-shaped base  3  at the sides of the reel body  11  and capable of coming into contact with the spoke wheels  112  to restrain the movement of the reel body  11 . Moreover, to keep the reel body  11  in a balanced stress state, braking components  4  may be arranged at the same side of the reel body  11  near the two spoke wheels  112  respectively. 
     Wherein, preferably, as shown in  FIG. 5 , the braking component  4  comprises a mounting base  41 , a slide block  42 , a friction disk  43 , a screw rod  44 , and a supporting member  45  fixed with respect to the mounting base  41  (e.g., the supporting member  45  may be fixed to the mounting base  41 ), wherein the mounting base  41  is fixedly connected to the frame-shaped base  3 , a slide track structure extending in the axial direction of the screw rod  44  is arranged between the slide block  42  and the mounting base  41 , the friction disk  43  is arranged on the side of the slide block  42  that faces the spoke wheel  112 , one end of the screw rod  44  is axially limited on the side of the slide block  42  that is opposite to the spoke wheel  112  and capable of rotating with respect to the slide block  42 , and the other end of the screw rod  44  is fitted in the supporting member  45  via threads; moreover, to keep the friction disk  43  in a required position reliably, the braking component  4  further comprises a lock nut  46  arranged on the screw rod  44  at the side of the supporting member  45  away from the slide block  42 . In that way, to restrain the rotation of the reel body  11 , the screw rod  44  may be turned with a wrench, so that the slide block  42  and the friction disk  43  move with respect to the mounting base  41  in the extension direction of the slide track structure (i.e., the axial direction of the screw rod  44 ) to a position where the friction disk  43  firmly abut against the periphery of the spoke wheel  112 , and then the lock nut  46  on the screw rod  44  can be tightened up, i.e., the lock nut  46  comes into contact with the supporting member  45  to prevent sliding of the slide block  42  during transportation; to enable the reel body  11  to rotate normally, the screw rod  44  may be turned with a wrench in a direction in which the friction disk  43  moves away from the spoke wheel  112  to a position where the friction disk  43  doesn&#39;t interfere with the spoke wheel  112 , and then the lock nut  46  can be tightened up, so as to prevent the slide block  42  from sliding with respect to the mounting base  41  and thereby interfering with the spoke wheel  112 . 
     Furthermore, to increase the contact area between the mounting base  41  and the slide block  42  and enable the mounting base  41  and the slide block  42  to be in slide-fit with each other reliably via the slide track structure, as shown in  FIG. 5 , preferably, the slide track structure comprises a dovetail groove arranged in the mounting base  41  and a dovetail block K that is arranged on the slide block  42  and is in slide-fit with the dovetail groove. 
     In addition, to enable one end of the screw rod  44  to be limited inside the slide block  42  in the axial direction and rotate with respect to the slide block  42 , as shown in  FIG. 6 , preferably, the braking component  4  comprises a stopper  47 , the slide block  42  is provided with an accommodating cavity, a flange T is arranged on the end of the screw rod  44  and rotatably disposed inside the accommodating cavity, the stopper  47  is fixedly connected to the slide block  42  and stops the flange T inside the accommodating cavity. Wherein, the stopper  47  may comprise a cover plate and fasteners that fixedly connect the cover plate to the slide block  42 . Specifically, the fasteners may be screws. 
     As shown in  FIGS. 3, 4, and 7 , preferably, the coiled tubing reel comprises a tubing aligner (level wind) assembly  5  and a clutch component  6  fixedly connected to the first bearing block  14 , wherein the tubing aligner assembly  5  comprises a first linking arm  51  and a second linking arm  52  that are oppositely arranged and a rhombic shaft  53  with two ends rotatably fitted with the first linking arm  51  and the second linking arm  52  respectively, the end of the first linking arm  51  that is away from the rhombic shaft  53  is rotatably fitted on the clutch component  6 , the end of the second linking arm  52  that is away from the rhombic shaft  53  is hinged to the second bearing block  15 , and the clutch component  6  is capable of moving the rhombic shaft  53  and the reel shaft  12  in association or not. In that way, automatic tubing alignment can be realized when the rhombic shaft  53  and the reel shaft  12  are in association via the clutch component  6 ; in a case that the coiled tubing is not aligned orderly, the rhombic shaft  53  and the reel shaft  12  may be not in association via the clutch component  6  so that a forced alignment motor  56  described below may be used to align the coiled tubing forcibly, to ensure the coiled tubing is aligned orderly and a required amount of coiled tubing can be wound on the reel body  11 . 
     Usually a mechanical overrun clutch is used for switchover between automatic tubing alignment and forced tubing alignment in coiled tubing reels at present. Such friction clutch controls the magnitude of the generated friction moment by means of the amount of compression of a Belleville spring, and the friction moment is greater than the moment required to drive the rhombic shaft  53  of the tubing aligner assembly  5  to rotate and smaller than the driving moment of the forced alignment motor  56 . The amount of compression of the Belleville spring is adjusted by means of a bolt, but the bolt may get loose and the friction disk may be worn during use. Therefore, manual adjustment is often required. However, field adjustment is inconvenient and unsafe, and the magnitude of the friction moment is difficult to control. Especially, for high-strength large-diameter coiled tubing used in deep wells, it is more difficult to control the friction moment. Hence, it is desirable to develop a clutch component  6  applicable to alignment of high-strength coiled tubing. As shown in  FIGS. 8 and 9 , preferably, the clutch component  6  in the present application comprises a driving portion  61 , a driven portion  62 , and a clutch portion  63  that has an engaged state in which the driving portion  61  is engaged with the driven portion  62  and a disengaged state in which the driving portion  61  is disengaged from the driven portion  62 , wherein the clutch portion  63  may be arranged between the driving portion  61  and the driven portion  62 , the driving portion  61  is in a transmission connection with the reel shaft  12 , the driven portion  62  is in a transmission connection with the rhombic shaft  53 , and the clutch component  6  further comprises a switching portion  64  configured to control the clutch component  6  to switch between the engaged state and the disengaged state. Wherein, the switching portion  64  may be connected to a hydraulic control system, and the hydraulic control system control the clutch portion  63  to switch to the engaged state in which the driving portion  61  is engaged with the driven portion  62  or to the disengaged state in which the driving portion  61  is disengaged from the driven portion  62  through hydraulic action on the switching portion  64 . 
     Further preferably, the driving portion  61  comprises a driving shaft  611  and a driving sprocket  612  mounted on the driving shaft  611 ; for example, the driving sprocket  612  is fitted on an outer end of the driving shaft  611  that is away from the driven portion  62 , an end plate in diameter greater than the diameter of the driving shaft  611  may be mounted on the outer end of the driving shaft  611 , and the end plate is fixedly connected to the driving shaft  611  by bolts to prevent the driving sprocket  612  from sliding off the driving shaft  611 ; the reel shaft  12  is provided with a transmission sprocket, and the driving sprocket  611  is connected to the transmission sprocket via chain; the driven portion  62  comprises a driven shaft  621  and a driven sprocket  622  mounted on the driven shaft  621 ; for example, the driven sprocket  622  is fitted on the outer end of the driven shaft  621  that is away from the driving portion  61 , an end plate in diameter greater than the diameter of the driven shaft  621  may be fitted on the outer end of the driven shaft  621  via threads to prevent the driven sprocket  622  from sliding off the driven shaft  621 , a hole in communication with the clutch portion  63  for lubricant flow may be arranged in the end surface of the outer end of the driven shaft  621 , and the hole may be sealed by means of a check valve F; the tubing aligner assembly  5  comprises a first sprocket  54  and a second sprocket  55  that are fixedly connected to the two ends of the rhombic shaft  53  respectively, and the driven sprocket  621  is connected to the first sprocket  54  via chain; the tubing aligner assembly  5  is provided with a forced alignment motor  56 , and the forced alignment motor  56  is connected to the second sprocket  55  via chain. In addition, a slide tongue box assembly  57  is fitted on the rhombic shaft  53 , a roller bogie  58  is fixedly connected on the slide tongue box assembly  57 , the first linking arm  51  and the second linking arm  52  are provided with slide tracks that extend in the same direction as the rhombic shaft  53  to guide the roller bogie  58  to slide, and an adjustable counter  59  and a lubricant box  50  are mounted on the roller bogie  58 . Quick switchover between automatic tubing alignment and manual forced tubing alignment can be realized via the clutch component  6 , and thereby manual adjustment can avoided, adjustment time can be reduced, labor intensity can be decreased, and operation convenience, safety and reliability can be improved. 
     As shown in  FIGS. 3 and 4 , preferably, an elevating component  7  configured to elevate the tubing aligner assembly  5  is arranged between the first linking arm  51  and the first bearing block  14  and between the second linking arm  52  and the second bearing block  15  respectively. Wherein, the elevating component  7  may be connected to one of the first linking arm  51 , the first bearing block  14 , the second linking arm  52 , and the second bearing block  15 , and the elevating component  7  may be a hydraulic cylinder. 
     The operating process of the coiled tubing reel in the present invention is as follows: the hydraulic motor  22  is driven by hydraulic power (i.e., supplied by a power system) to drive the driving gear  21  via the reducer  23  to rotate, the driving gear  21  is engaged with the transmission gear  13  that is fixed with respect to the reel shaft  12  and thereby drives the reel body  11  that is fixedly fitted on the reel shaft  12  to rotate; in the case of automatic tubing alignment, the driven portion  62  and the driving portion  61  of the clutch component  6  are driven by the hydraulic power at the same time to engage with each other via the clutch portion  63  (i.e., the clutch portion  63  is in an engaged state), the reel shaft  12  rotates and drives the transmission sprocket on it to rotate, the transmission sprocket drives the driving sprocket  612  on the driving shaft  611  via chain to rotate and drive the driven shaft  621  and the driven sprocket  622  on the driven shaft  621  to rotate together, the driven sprocket  622  drives the first sprocket  54  via chain to rotate, and thereby the rhombic shaft  53  rotates, so that the slide tongue box assembly  57  and the roller bogie  58  move to and fro along the length direction of the rhombic shaft  53 , and drive the coiled tubing mounted on the adjustable counter  59  to align uniformly on the reel body  11 . In the case that the coil tubing is not aligned orderly, the clutch component  6  is driven by hydraulic power to drive the driven shaft  621  and the driving shaft  611  to disengage from each other via the clutch portion  63 ; now the driving sprocket  612  and the driven sprocket  622  are not in association with each other; then, the forced alignment motor  56  on the tubing aligner assembly  5  is driven by hydraulic power to drive the second sprocket  55  and the rhombic shaft  53  to rotate, so that the slide tongue box assembly  57  and the roller bogie  58  are driven to move to and fro in the length direction of the rhombic shaft  53 ; after the coil tubing is aligned orderly, the rotation of the forced alignment motor  56  is stopped, and the clutch component  6  is driven by hydraulic power to drive the driven shaft  621  and the driving shaft  611  to engage with each other via the clutch portion  63 , and thereby automatic tubing alignment is enabled. 
     In a second aspect, the present invention provides a coiled tubing vehicle, which comprises a vehicle body and the above-mentioned coiled tubing reel mounted on the vehicle body, wherein the first bearing block  14  and the second bearing block  15  are fixed with respect to the vehicle body respectively. Since the coiled tubing vehicle includes the above-mentioned coiled tubing reel, it has all or at least a part of the technical effects of the coiled tubing reel. Please see the above description for the details and effects of the specific technical scheme. 
     While the present invention is described above in detail in some preferred embodiments with reference to the accompanying drawings, the present invention is not limited to those embodiments. Various simple variations may be made to the technical scheme in the present invention, including combinations of the specific technical features in any appropriate form, within the scope of the technical ideal of the present invention. To avoid unnecessary repetition, the possible combinations are not described specifically in the present invention. However, such simple variations and combinations shall also be deemed as having been disclosed in the present invention and falling in the scope of protection of the present invention.