A coiled tubing heating cover and coiled tubing service truck

Abstract

The present application relates to the field of coiled tubing operation, and particularly relates to a coiled tubing heating cover and a coiled tubing operation vehicle. The coiled tubing heating cover comprises a cover body for being fixed on a chassis to cover a drum, the cover body has a downward opening, a top of the cover body is provided with a zipper, the zipper comprises a zipper tape extending along an axial direction of the drum and two zipper pulls, a passing space for the coiled tubing to pass through is formed between the two zipper pulls, and the two zipper pulls are connected together so that when one of the zipper pulls is pulled to open the zipper tape under the action of the coiled tubing, the other zipper pull closes the zipper tape. The cover body is provided with a heating element for heating the coiled tubing wound on the drum. The present application can heat and keep warm the coiled tubing wound on the drum without affecting the coiled tubing operation, and improves the heat utilization rate and construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of coiled tubing construction operations, specifically to a tubing heating and insulation cover and a coiled tubing operation vehicle. Background Technology

[0002] Currently, coiled tubing operations cover multiple areas including drilling, logging, production enhancement, and well workover. Coiled tubing operations are generally carried out using a coiled tubing installation vehicle.

[0003] Chinese patent document CN204941390U discloses a coiled tubing installation vehicle, mainly comprising a chassis, coiled tubing, and a drum. The chassis adopts a U-shaped structure to meet the requirements for the downward installation of the drum. The coiled tubing is wound around the drum, and a coiler is provided on the drum, extending axially along the drum to neatly arrange the coiled tubing on the drum. In cold winter weather conditions, due to the low temperature, the working fluid inside the coiled tubing is very prone to freezing, which can cause the coiled tubing to freeze and crack, resulting in significant property damage.

[0004] In existing technologies, to address the aforementioned problems, liquid nitrogen pump trucks are typically used to purge the working fluid inside the coiled tubing during operations. However, this method is costly, and the disposal of the waste fluid produced during purging is quite complicated.

[0005] Chinese patent document CN107724977A discloses a continuous tubing operation vehicle, including a chassis, on which a continuous tubing drum is mounted. The continuous tubing drum includes a cylinder body, and a heating pipe is provided on the inner wall of the cylinder body. The heating pipe has an inlet for heating fluid to enter and an outlet for heating fluid to flow out. In use, the heating fluid flows in the heating pipe to heat the cylinder body. In this way, the continuous tubing that is attached to the outer wall of the cylinder body will be heated, thus preventing the working fluid in the continuous tubing from freezing.

[0006] In the above technology, the heating tube needs to be connected to a heat source when heating the coiled tubing. This causes the drum to be unable to rotate during heating, making it impossible for the heating and raising / lowering of the coiled tubing to be carried out simultaneously, thus affecting production efficiency. Summary of the Invention

[0007] The purpose of this invention is to provide a coiled tubing installation vehicle to solve the technical problem that, in the prior art, when a coiled tubing installation vehicle uses a heating pipe to heat the coiled tubing, the heating of the coiled tubing and the raising and lowering of the coiled tubing cannot be carried out simultaneously; the purpose of this invention is also to provide a tubing heating insulation cover.

[0008] To achieve the above objectives, the technical solution of the oil pipe heating insulation cover of the present invention is as follows:

[0009] The oil pipe heating and insulation cover includes a cover body for fixing to a chassis to cover a roller. The cover body has a downward opening and a zipper is provided on the top of the cover body. The zipper includes a chain belt extending along the roller axis and two pull heads. A passage space is formed between the two pull heads for the continuous oil pipe to pass through. The two pull heads are connected together so that when one pull head pulls the chain belt open under the action of the continuous oil pipe, the other pull head pulls the chain belt closed. The cover body is provided with a heating element for heating the continuous oil pipe wound on the roller.

[0010] The beneficial effects are as follows: Since the cover is installed outside the drum, it can provide insulation when the heating element heats the continuous oil pipe wound on the drum. During operation, the coiler arranges the pipes sequentially in the left-right direction, meaning the continuous oil pipe reciprocates along the drum's axial direction as it winds around the drum. In this application, under the action of the continuous oil pipe, one pull head opens the chain while the other pulls it closes, keeping the chain always closed. This significantly reduces heat loss from the cover to the outside through the chain, meaning that while heating and insulating the continuous oil pipe wound on the drum, it does not affect the raising and lowering of the continuous oil pipe, improving heat utilization and construction efficiency.

[0011] As a further improvement, the axis of the roller is defined as the left-right direction. The cover includes a front cover wall, a rear cover wall, a left cover wall, a right cover wall, and an arc-shaped cover top extending circumferentially along the roller. The zipper is set on the arc-shaped cover top. Swing arms are respectively hinged on the left and right cover walls. The swing ends of the two swing arms are respectively connected to the left and right ends of the arc-shaped cover top. The cover is provided with a swing arm drive device for driving the swing arms to swing in the front-back direction, so that the swing arms drive the arc-shaped cover top to move circumferentially along the roller, thereby changing the position of the zipper.

[0012] The beneficial effect is that, with this design, when the continuous tubing is wound on the drum to different thicknesses, the position of the zipper can be adjusted to ensure that the inclination angle of the continuous tubing remains consistent, thus avoiding excessive bending of the continuous tubing and affecting its service life.

[0013] As a further improvement, retractable corrugated expansion joints are provided between the front end and the front wall of the arc-shaped dome, and between the rear end and the rear wall of the arc-shaped dome.

[0014] The beneficial effect is that this design facilitates the movement of the curved dome in the front-to-back direction.

[0015] As a further improvement, a reset elastic element is connected to the tip of the corrugated expansion member on the same side. After the corrugated expansion member is extended, the reset elastic element applies an elastic force to the tip of the corrugated expansion member to force it to contract.

[0016] The beneficial effect is that this design facilitates the repositioning of the corrugated expansion joint.

[0017] As a further improvement, the swing end of the swing arm is connected to the middle position of the corresponding end of the arc-shaped dome.

[0018] The beneficial effect is that this design helps the swing arm support the curved dome.

[0019] As a further improvement, the two pull heads are connected together by a pull rod.

[0020] The beneficial effect is that this design allows one of the zipper heads to drive the other zipper head in a timely manner, ensuring the synchronization of the two zipper head movements.

[0021] As a further improvement, the top of the cover has a cover strip on one side of the zipper for covering the zipper, and a magnetic adsorption structure is provided between the cover strip and the top of the cover on the other side of the zipper.

[0022] The beneficial effect is that the magnetic adsorption structure can ensure that the cover strip automatically adheres to the top of the cover, thus ensuring a sealing effect.

[0023] As a further improvement, the cover strip and the top of the cover are also provided with Velcro between the two sides of the zipper.

[0024] The beneficial effects are: the Velcro is lightweight, and the magnetic adsorption structure ensures that there is almost no gap between the cover strip and the top of the cover, further reducing heat dissipation.

[0025] As a further improvement, at least one side of the cover is a transparent cover wall, and a wiper is provided on the inner side of the transparent cover wall.

[0026] The beneficial effects are: the transparent cover makes it easy for staff to observe the arrangement of the continuous oil pipes on the roller, while the wiper can remove water mist from the transparent cover, preventing water mist from affecting the staff's observation of the inside of the cover.

[0027] To achieve the above objectives, the technical solution of the coiled tubing workover vehicle of the present invention is as follows:

[0028] A coiled tubing installation vehicle includes a chassis, a roller mounted on the chassis, a coiled tubing wound on the roller, and a tubing heating and insulation cover mounted on the chassis. The tubing heating and insulation cover includes a cover body fixed to the chassis to cover the roller, the cover body having a downward opening, and a zipper at the top of the cover body. The zipper includes a chain extending along the roller axis and two pull heads, forming a passage space between the two pull heads for the coiled tubing to pass through. The two pull heads are connected together so that when one pull head pulls the chain open under the action of the coiled tubing, the other pull head pulls the chain close. The cover body is equipped with a heating element for heating the coiled tubing wound on the roller.

[0029] The beneficial effects are as follows: Since the cover is installed outside the drum, it can provide insulation when the heating element heats the continuous oil pipe wound on the drum. During operation, the coiler arranges the pipes sequentially in the left-right direction, meaning the continuous oil pipe reciprocates along the drum's axial direction as it winds around the drum. In this application, under the action of the continuous oil pipe, one pull head opens the chain while the other pulls it closes, keeping the chain always closed. This significantly reduces heat loss from the cover to the outside through the chain, meaning that while heating and insulating the continuous oil pipe wound on the drum, it does not affect the raising and lowering of the continuous oil pipe, improving heat utilization and construction efficiency.

[0030] As a further improvement, the axis of the roller is defined as the left-right direction. The cover includes a front cover wall, a rear cover wall, a left cover wall, a right cover wall, and an arc-shaped cover top extending circumferentially along the roller. The zipper is set on the arc-shaped cover top. Swing arms are respectively hinged on the left and right cover walls. The swing ends of the two swing arms are respectively connected to the left and right ends of the arc-shaped cover top. The cover is provided with a swing arm drive device for driving the swing arms to swing in the front-back direction, so that the swing arms drive the arc-shaped cover top to move circumferentially along the roller, thereby changing the position of the zipper.

[0031] The beneficial effect is that, with this design, when the continuous tubing is wound on the drum to different thicknesses, the position of the zipper can be adjusted to ensure that the inclination angle of the continuous tubing remains consistent, thus avoiding excessive bending of the continuous tubing and affecting its service life.

[0032] As a further improvement, retractable corrugated expansion joints are provided between the front end and the front wall of the arc-shaped dome, and between the rear end and the rear wall of the arc-shaped dome.

[0033] The beneficial effect is that this design facilitates the movement of the curved dome in the front-to-back direction.

[0034] As a further improvement, a reset elastic element is connected to the tip of the corrugated expansion member on the same side. After the corrugated expansion member is extended, the reset elastic element applies an elastic force to the tip of the corrugated expansion member to force it to contract.

[0035] The beneficial effect is that this design facilitates the repositioning of the corrugated expansion joint.

[0036] As a further improvement, the swing end of the swing arm is connected to the middle position of the corresponding end of the arc-shaped dome.

[0037] The beneficial effect is that this design helps the swing arm support the curved dome.

[0038] As a further improvement, the two pull heads are connected together by a pull rod.

[0039] The beneficial effect is that this design allows one of the zipper heads to drive the other zipper head in a timely manner, ensuring the synchronization of the two zipper head movements.

[0040] As a further improvement, the top of the cover has a cover strip on one side of the zipper for covering the zipper, and a magnetic adsorption structure is provided between the cover strip and the top of the cover on the other side of the zipper.

[0041] The beneficial effect is that the magnetic adsorption structure can ensure that the cover strip automatically adheres to the top of the cover, thus ensuring a sealing effect.

[0042] As a further improvement, the cover strip and the top of the cover are also provided with Velcro between the two sides of the zipper.

[0043] The beneficial effects are: the Velcro is lightweight, and the magnetic adsorption structure ensures that there is almost no gap between the cover strip and the top of the cover, further reducing heat dissipation.

[0044] As a further improvement, at least one side of the cover is a transparent cover wall, and a wiper is provided on the inner side of the transparent cover wall.

[0045] The beneficial effects are: the transparent cover makes it easy for staff to observe the arrangement of the continuous oil pipes on the roller, while the wiper can remove water mist from the transparent cover, preventing water mist from affecting the staff's observation of the inside of the cover. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of the coiled tubing work vehicle of the present invention;

[0047] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0048] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0049] Figure 4 for Figure 1 Schematic diagram of the structure of the heating and insulation cover for the oil pipe;

[0050] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0051] In the diagram: 11. Chassis; 12. Front cover wall; 13. Rear cover wall; 14. Left cover wall; 15. Right cover wall; 16. Arched top; 17. Telescopic cylinder; 18. Swing arm; 19. Corrugated telescopic component; 20. Rubber band; 21. Continuous oil pipe; 22. Cover strip; 23. First magnet; 24. Second magnet; 25. Velcro; 26. Swing rod; 27. Brush rod; 28. Pull head; 29. ​​Pull rod; 30. Roller; 31. Bracket; 32. Coiler; 33. Control room. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0054] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Additionally, the terms "front," "rear," "upper," "lower," "left," and "right" are based on the orientation and positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention, not to indicate that the referred device or component must have a specific orientation, and therefore should not be construed as limiting the invention.

[0055] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0056] Embodiment 1 of the coiled tubing installation vehicle of the present invention:

[0057] like Figure 1 As shown, the coiled tubing work vehicle includes a chassis 11, a support 31 on the chassis 11, a roller 30 rotatably mounted on the support 31, a coiled tubing 21 wound on the roller 30, and a coiler 32 that can reciprocate along the axial direction of the roller 30 on the roller 30. The coiler 32 is used to neatly arrange the coiled tubing on the roller 30.

[0058] In this embodiment, the chassis 11 is also provided with an oil pipe heating and insulation cover. The oil pipe heating and insulation cover includes a cover body, which is a room-shaped structure with a downward opening. The cover body covers the outside of the roller 30 and the opening edge of the cover body is fixed to the chassis 11 so that the cover body and the chassis 11 together form a relatively sealed space.

[0059] In this embodiment, the axial direction of the roller 30 is defined as the left-right direction, which is the same as the width direction of the vehicle body. The cover includes a front cover wall 12, a rear cover wall 13, a left cover wall 14, a right cover wall 15, an arc-shaped cover top 16, and a metal frame (not shown). The arc-shaped cover top 16 extends circumferentially along the roller 30. A zipper is provided on the arc-shaped cover top 16, such as... Figure 3 and Figure 5 As shown, the zipper includes a chain belt (not shown) extending axially along the roller 30 and two pull heads 28, forming a passage space between the two pull heads 28 for a continuous oil pipe 21 to pass through, and the two pull heads 28 are connected together by a pull rod 29. In other embodiments, the roller's axial direction is the same as the vehicle's front-rear direction.

[0060] During operation, the coiler 32 arranges the tubing sequentially in a left-right direction, meaning the continuous oil tubing 21 reciprocates in the left-right direction as it winds around the roller 30. Therefore, under the action of the continuous oil tubing 21, one pull head 28 pulls the chain open, while the other pull head 28 pulls the chain closed under the action of the pull rod 29, keeping the zipper in a closed state at all times. This reduces heat loss from the zipper to the outside, improving heat utilization.

[0061] In this embodiment, the front cover 12, the rear cover 13, and the arc-shaped top 16 are all made of PET plastic, while the left cover 14 and the right cover 15 are made of insulating fabric. The left and right covers are connected to the front cover, the rear cover, and the arc-shaped top via Velcro. This design reduces the weight of the cover and facilitates the opening of the left and right covers for inspection and maintenance of the internal components.

[0062] In this embodiment, the pull rod 29 is an arc-shaped rod to avoid the coiled tubing 21. In other embodiments, the pull rod is a straight rod with a clearance hole in the middle for avoiding the coiled tubing, but sufficient clearance must be ensured between the coiled tubing and the pull rod to facilitate the movement of the coiled tubing within the clearance hole.

[0063] like Figure 3 As shown, the curved top 16 has a cover strip 22 on one side of the zipper, extending along the length of the zipper. A magnetic adsorption structure is provided between the cover strip 22 and the curved top 16 on the other side of the zipper. This magnetic adsorption structure is used to attach the cover strip 22 to the curved top 16 to cover the zipper and reduce heat loss from the zipper teeth. The magnetic adsorption structure includes a first magnet 23 and a second magnet 24. The first magnet 23 is disposed on the cover strip 22, and the second magnet 24 is disposed on the curved top 16. In other embodiments, the magnetic adsorption structure may include a magnet and an iron block, with one of the magnet and the iron block disposed on the cover strip and the other on the curved top.

[0064] In this embodiment, to further reduce heat dissipation, a Velcro 25 is provided between the cover strip 22 and the curved top cover 16 on the other side of the zipper. The Velcro 25 extends along the length of the cover strip 22, a portion of which is disposed on the cover strip 22 and wraps around the first magnet 23, and the other portion of which is disposed on the curved top cover 16 and wraps around the second magnet 24.

[0065] like Figure 1 and Figure 4 As shown, swing arms 18 are hinged to the left cover wall 14 and the right cover wall 15, respectively. The swing ends of the two swing arms 18 are connected to the left and right ends of the arc-shaped cover top 16, respectively. The cover body is provided with a telescopic cylinder 17 for driving the swing arms 18 to swing in the front-back direction, so that the swing arms 18 drive the arc-shaped cover top 16 to move circumferentially along the roller 30, thereby changing the position of the zipper. With this design, when the continuous oil pipe 21 is wound on the roller 30 with different thicknesses, the inclination angle of the continuous oil pipe 21 can be kept consistent by adjusting the position of the zipper. Among them, the telescopic cylinder 17 constitutes the swing arm drive device.

[0066] In this embodiment, both telescopic cylinders 17 are pneumatic cylinders, and the two telescopic cylinders 17 are connected in parallel on the same main air line. The two telescopic cylinders 17 are of the same model to ensure that the two telescopic cylinders 17 operate synchronously.

[0067] In this embodiment, the swing end of the swing arm 18 is connected to the middle position of the corresponding end of the arc-shaped dome 16. This design is beneficial for the swing arm 18 to support the arc-shaped dome 16.

[0068] like Figure 1 and Figure 2As shown, retractable corrugated expansion joints 19 are respectively provided between the front end of the arc-shaped dome 16 and the front wall 12, and between the rear end of the arc-shaped dome 16 and the rear wall 13. This design allows one corrugated expansion joint 19 to be compressed and the other to be stretched when the arc-shaped dome 16 moves in the front-back direction, facilitating the movement of the arc-shaped dome 16 in the front-back direction. Preferably, the corrugated expansion joints 19 are made of plastic.

[0069] In this embodiment, a reset elastic element is connected to the outer tip of the corrugated expansion member 19. Preferably, the reset elastic element is a rubber band strip 20. After the corrugated expansion member 19 is extended, the rubber band strip 20 applies an elastic force to the tip of the corrugated expansion member 19 to force the corrugated expansion member 19 to contract. This design is beneficial to the reset of the corrugated expansion member 19.

[0070] In this embodiment, the cover is provided with a heating element for heating the continuous oil pipe 21 wound on the roller 30. Specifically, both the front cover wall 12 and the rear cover wall 13 include an inner layer and an outer layer. The heating element is a heating plate (not shown) disposed between the inner and outer layers. The inner layer has a thickness of 0.8 mm to prevent heat loss and a thickness of 0.2 mm to effectively conduct heat into the cover.

[0071] like Figure 4 As shown, the front cover 12 is a transparent cover, and a wiper is provided on the inner side of the front cover 12. The wiper is used to remove water mist from the front cover 12 so that the operator can observe the arrangement of the continuous oil pipes 21 from the control room 33. In this embodiment, the wiper includes a swing arm 26 and a brush arm 27. The lower end of the swing arm 26 is hinged to the front cover 12, and the upper end of the swing arm 26 is connected to the brush arm 27. The swing arm 26 is driven to swing by a motor (not shown) located on the outer side of the front cover 12.

[0072] The oil pipe heating and insulation cover of the present invention can be adjusted in conjunction with the up, down, left and right of the continuous oil pipe during the raising and lowering operation, that is, while heating and insulating the continuous oil pipe wound on the drum, it does not affect the raising and lowering operation of the continuous oil pipe, thereby improving construction efficiency.

[0073] Embodiment 2 of the coiled tubing workover vehicle of the present invention:

[0074] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the top cover is an arc-shaped structure extending circumferentially along the roller. Under the action of the swing arm drive device, the top cover can move circumferentially along the roller, thereby changing the position of the zipper. In this embodiment, the top cover is a flat top fixed to the top of the front, back, left, and right cover walls, meaning the position of the zipper on the top cover does not change.

[0075] Embodiment 3 of the coiled tubing installation vehicle of the present invention:

[0076] The difference between this embodiment and Embodiment 1 is that, in Embodiment 1, retractable corrugated expansion joints are provided between the front end and the front wall of the arc-shaped dome, and between the rear end and the rear wall of the arc-shaped dome. In this embodiment, the corrugated expansion joints are replaced by a fabric with a certain degree of elasticity.

[0077] Embodiment 4 of the coiled tubing installation vehicle of the present invention:

[0078] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the two zipper heads are connected together by a pull rod. In this embodiment, the two zipper heads are connected together by a zipper.

[0079] An embodiment of the oil pipe heating and insulation cover of the present invention: The structure of the oil pipe heating and insulation cover is the same as that of any one of the embodiments 1 to 4 of the above-mentioned continuous tubing operation vehicle, and will not be described again here.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An oil pipe heating insulation cover, characterized in that, Includes a cover for fixing to a chassis (11) to cover a roller (30), the cover having a downward opening, a zipper on the top of the cover, the zipper including a chain extending along the axial direction of the roller (30) and two pull heads (28), a passage space is formed between the two pull heads (28) for a continuous oil pipe (21) to pass through, the two pull heads (28) are connected together by a pull rod (29) so that when one pull head (28) pulls open the chain under the action of the continuous oil pipe (21), the other pull head (28) pulls the chain closed by the pull rod (29); the cover is provided with a heating element for heating the continuous oil pipe (21) wound on the roller (30); the pull rod is an arc-shaped rod to avoid the continuous oil pipe, or the pull rod is a straight rod with a clearance hole in the middle for avoiding the continuous oil pipe.

2. The oil pipe heating and insulation cover according to claim 1, characterized in that, The axis of the roller (30) is defined as the left and right direction. The cover includes a front cover wall (12), a rear cover wall (13), a left cover wall (14), a right cover wall (15), and an arc-shaped cover top (16) extending circumferentially along the roller (30). The zipper is set on the arc-shaped cover top (16). The left cover wall (14) and the right cover wall (15) are respectively hinged with swing arms (18). The swing ends of the two swing arms (18) are respectively connected to the left end and the right end of the arc-shaped cover top (16). The cover is provided with a swing arm drive device for driving the swing arms (18) to swing in the front and back direction, so that the swing arms (18) drive the arc-shaped cover top (16) to move circumferentially along the roller (30), thereby changing the position of the zipper.

3. The oil pipe heating and insulation cover according to claim 2, characterized in that, Retractable corrugated expansion joints (19) are provided between the front end of the arc-shaped dome (16) and the front wall (12), and between the rear end of the arc-shaped dome (16) and the rear wall (13).

4. The oil pipe heating and insulation cover according to claim 3, characterized in that, A reset elastic element is connected to the tip of the corrugated expansion member (19) on the same side. After the corrugated expansion member (19) is extended, the reset elastic element applies an elastic force to the tip of the corrugated expansion member (19) to force the corrugated expansion member (19) to contract.

5. The oil pipe heating insulation cover according to any one of claims 2 to 4, characterized in that, The swing end of the swing arm (18) is connected to the middle position of the corresponding end of the arc-shaped dome (16).

6. The oil pipe heating insulation cover according to any one of claims 1 to 4, characterized in that, The top of the cover has a cover strip (22) on one side of the zipper for covering the zipper, and a magnetic adsorption structure is provided between the cover strip (22) and the top of the cover on the other side of the zipper.

7. The oil pipe heating and insulation cover according to claim 6, characterized in that, The cover strip (22) is also provided with Velcro (25) between the top of the cover and the other side of the zipper.

8. The oil pipe heating insulation cover according to any one of claims 1 to 4, characterized in that, At least one side of the cover is a transparent cover, and a wiper is provided on the inner side of the transparent cover.

9. A coiled tubing work vehicle, comprising a chassis (11), a roller (30) mounted on the chassis (11), a coiled tubing (21) wound on the roller (30), and a tubing heating and insulation cover mounted on the chassis (11), characterized in that, The heating and insulation cover for the oil pipe includes a cover body for fixing on the chassis (11) to cover the roller (30). The cover body has a downward opening. The top of the cover body is provided with a zipper. The zipper includes a chain belt extending along the axial direction of the roller (30) and two pull heads (28). A passage space is formed between the two pull heads (28) for the continuous oil pipe (21) to pass through. The two pull heads (28) are connected together by a pull rod (29) so that when one pull head (28) pulls open the chain belt under the action of the continuous oil pipe (21), the other pull head (28) pulls the chain belt closed through the pull rod (29). The cover body is provided with a heating element for heating the continuous oil pipe (21) wound on the roller (30). The pull rod is an arc-shaped rod to avoid the continuous oil pipe, or the pull rod is a straight rod with an avoidance hole in the middle for avoiding the continuous oil pipe.

10. The coiled tubing work vehicle according to claim 9, characterized in that, The axis of the roller (30) is defined as the left and right direction. The cover includes a front cover wall (12), a rear cover wall (13), a left cover wall (14), a right cover wall (15), and an arc-shaped cover top (16) extending circumferentially along the roller (30). The zipper is set on the arc-shaped cover top (16). The left cover wall (14) and the right cover wall (15) are respectively hinged with swing arms (18). The swing ends of the two swing arms (18) are respectively connected to the left end and the right end of the arc-shaped cover top (16). The cover is provided with a swing arm drive device for driving the swing arms (18) to swing in the front and back direction, so that the swing arms (18) drive the arc-shaped cover top (16) to move circumferentially along the roller (30), thereby changing the position of the zipper.

11. The coiled tubing installation vehicle according to claim 10, characterized in that, Retractable corrugated expansion joints (19) are provided between the front end of the arc-shaped dome (16) and the front wall (12), and between the rear end of the arc-shaped dome (16) and the rear wall (13).

12. The coiled tubing work vehicle according to claim 11, characterized in that, A reset elastic element is connected to the tip of the corrugated expansion member (19) on the same side. After the corrugated expansion member (19) is extended, the reset elastic element applies an elastic force to the tip of the corrugated expansion member (19) to force the corrugated expansion member (19) to contract.

13. The coiled tubing installation vehicle according to any one of claims 10 to 12, characterized in that, The swing end of the swing arm (18) is connected to the middle position of the corresponding end of the arc-shaped dome (16).

14. The coiled tubing installation vehicle according to any one of claims 9 to 12, characterized in that, The top of the cover has a cover strip (22) on one side of the zipper for covering the zipper, and a magnetic adsorption structure is provided between the cover strip (22) and the top of the cover on the other side of the zipper.

15. The coiled tubing installation vehicle according to claim 14, characterized in that, The cover strip (22) is also provided with Velcro (25) between the top of the cover and the other side of the zipper.

16. The coiled tubing installation vehicle according to any one of claims 9 to 12, characterized in that, At least one side of the cover is a transparent cover, and a wiper is provided on the inner side of the transparent cover.

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