Flexible pipe winding and unwinding device and flexible pipe mounting system

Abstract

The utility model provides a flexible pipe take-up and pay-off device and a flexible pipe installation system, and relates to the technical field of oil well pipeline take-up and pay-off, the flexible pipe take-up and pay-off device comprises a coil pipe assembly and a guide assembly, the guide assembly comprises a guide supporting seat and a guide support, and the guide support is arranged on the guide supporting seat; the guide support comprises a support body, an arc-shaped track part and a guide limiting part, the arc-shaped track part is arranged on the support body and is vertically arranged, the guide limiting part is located on the outer side of the arc-shaped track part, and an arc-shaped guide channel is formed between the arc-shaped track part and the guide limiting part; one end of the guide channel is used for being arranged above a clamping device of the flexible pipe mounting system, and the clamping device is used for being arranged above a well hole of an oil well; the guide channel is used for guiding the flexible pipe provided by the coil pipe assembly to the clamping device. According to the utility model, the lowering effect of the flexible pipe can be improved, and the risk of leakage of the flexible pipe can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the pipeline take -up technology field of oil well, concretely, relate to a flexible pipe take -up device and flexible pipe installation system. BACKGROUND

[0002] Fiber reinforced composite flexible pipe (hereinafter referred to as flexible pipe) is a new type of hose for deepwater oil and gas transmission field, which has the advantages of low weight-strength ratio and corrosion resistance. Among them, the flexible pipe can be applied to the drilling scene of soil or rock, and can be used for transporting oil, gas, water, soluble mineral slurry and the like extracted from the well hole.

[0003] In the related art, the flexible pipe is mainly lowered into the oil well through the flexible pipe installation system, for example, the flexible pipe installation system can include a coiled tubing assembly and a clamping device, the flexible pipe is wound on the coiled tubing assembly, and the clamping device is arranged above the well hole of the oil well; during normal operation, the drum of the coiled tubing assembly can be rotated counterclockwise to gradually separate the flexible pipe from the drum, and the clamping or loosening of the clamping device is mainly used to gradually lower the flexible pipe separated from the drum into the well hole of the oil well; or after the work is completed, the drum can be rotated clockwise to pull out the flexible pipe in the well hole to wind the flexible pipe on the drum again.

[0004] During the process of lowering the flexible pipe into the well hole, if the distance between the coiled tubing assembly and the clamping device is large, the part of the flexible pipe separated from the drum will be bent at the clamping device at too large an angle, thereby not only affecting the straightness of the flexible pipe entering the well hole, but also the flexible pipe at the clamping device is abraded by the clamping device due to the bending angle, so that the thickness of the part of the flexible pipe passing through the clamping device is thinned, increasing the risk of leakage of the flexible pipe due to excessive pressure during oil and gas transmission later. SUMMARY

[0005] The problem solved by the utility model is how to improve the lowering effect of the flexible pipe and reduce the risk of leakage of the flexible pipe.

[0006] To solve the above problems, the utility model provides a flexible pipe take -up device and flexible pipe installation system.

[0007] In the first aspect, the utility model provides a flexible pipe take -up device, including coiled tubing assembly and guide assembly, the guide assembly includes guide support seat and guide bracket, the guide support seat and the coiled tubing assembly are used for interval arrangement on the support surface, the guide bracket is arranged on the guide support seat;

[0008] The guiding support comprises a support body, an arc-shaped track part and a guiding limiting part, the arc-shaped track part is arranged on the support body and arranged vertically, the guiding limiting part is arranged on the support body and located outside the arc-shaped track part, an arc-shaped guiding channel is formed between the arc-shaped track part and the guiding limiting part, one end of the guiding channel is used for being arranged above a clamping device of a flexible pipe installation system, the clamping device is used for being arranged above a well hole of an oil well;

[0009] The disc pipe assembly is used for winding a flexible pipe, and the guiding channel is used for guiding the flexible pipe provided by the disc pipe assembly to the clamping device.

[0010] Optionally, the support body is a sector-shaped support structure with a first arc-shaped guiding surface, the arc-shaped track part comprises a plurality of first guiding wheel structures, the plurality of first guiding wheel structures are arranged on the support body and spaced apart along the first arc-shaped guiding surface, and the plurality of first guiding wheel structures are used for the flexible pipe to pass through.

[0011] Optionally, the first guiding wheel structure comprises a first pin shaft and a first guiding wheel, the first pin shaft is arranged through the support body, and the first guiding wheel is sleeved on the first pin shaft and used for rotating around an axis of the first pin shaft.

[0012] A middle part of the first guiding wheel is provided with a first annular groove, an axis of the first annular groove coincides with an axis of the first pin shaft, and the first annular groove is used for the flexible pipe to pass through.

[0013] Optionally, the first guiding wheel structure further comprises a buffering structure, the first guiding wheel has a first through hole penetrating through an axial direction of the first guiding wheel, the first pin shaft is arranged through the first through hole, and the buffering structure is arranged between an inner wall of the first through hole and the first pin shaft, so that the first guiding wheel is used for moving along a radial direction of the first guiding wheel to make the buffering structure deformed.

[0014] Optionally, the support body further has a second arc-shaped guiding surface, and the second arc-shaped guiding surface is located outside the first arc-shaped guiding surface.

[0015] The guiding limiting part comprises a plurality of first limiting rods, and the plurality of first limiting rods are arranged on the support body and spaced apart along the second arc-shaped guiding surface.

[0016] Optionally, the guiding assembly further comprises a lifting structure, the lifting structure comprises a lifting base, a lifting driving device and a lifting plate, the lifting base is arranged on the support surface, the upper part of the lifting plate is provided with the guiding support seat, the lifting driving device is arranged between the lifting base and the lifting plate, the lifting driving device is connected with the lifting plate, and the lifting driving device is used for driving the lifting plate to drive the guiding support seat and the guiding support to perform lifting action.

[0017] Optionally, the lifting structure further comprises a plurality of telescopic rods, the plurality of telescopic rods are arranged at intervals in the circumferential direction of the lifting driving device, and the two axial ends of the telescopic rods are connected with the lifting plate and the lifting base respectively.

[0018] Optionally, the coil pipe assembly comprises a reel support seat, a second pin shaft and a winding drum, the reel support seat is arranged on the support surface, the winding drum is arranged on the reel support seat through the second pin shaft, and the winding drum is used for rotating around the axis line of the second pin shaft.

[0019] Optionally, the winding drum comprises a winding drum body, a second limiting rod and a plurality of second guide wheel structures, the plurality of second guide wheel structures are arranged in an annular interval in the circumferential direction of the winding drum body, the second limiting rod is arranged on the winding drum body and located outside the second guide wheel structure, the plurality of second guide wheel structures arranged in an annular manner are used for winding the flexible pipe, and the flexible pipe is located between the second guide wheel structure and the second limiting rod.

[0020] In the second aspect, the utility model further provides a flexible pipe installation system, including clamping device and flexible pipe winding and unwinding device as mentioned above.

[0021] The flexible pipe winding and unwinding device and the flexible pipe installation system have the following beneficial effects:

[0022] The flexible pipe can be lowered into the wellbore of the oil well by the following way, for example, the disc pipe assembly can be rotated counterclockwise, the flexible pipe wound on the disc pipe assembly is unwound, the end of the flexible pipe passes through the arc-shaped guide channel between the arc-shaped track part and the guide limiting part of the guide support, and moves around the arc direction of the arc-shaped track part, since one end of the guide channel is arranged above the clamping device of the flexible pipe installation system, and the clamping device is arranged above the wellbore of the oil well, so that the flexible pipe around the arc-shaped track part can smoothly pass through the clamping device and enter the wellbore, the clamping device is used for adjusting the lowering speed of the flexible pipe lowered into the wellbore and assisting the communication between adjacent two flexible pipes by clamping or releasing the flexible pipe, so as to realize the lowering of the flexible pipe into the wellbore, and prepare for the subsequent oil and gas conveying work of the oil well. When the flexible pipe needs to be taken out after the oil and gas conveying work is completed, the disc pipe assembly can be rotated clockwise to pull out the flexible pipe from the wellbore, and in the process of pulling out, the flexible pipe is wound on the disc pipe assembly again after passing through the clamping device and the guide channel, so as to realize the folding work of the flexible pipe.

[0023] In the process of lowering the flexible pipe on the disc pipe assembly into the wellbore, since the guide support is arranged on the support surface such as the oil well platform through the guide support seat and is spaced apart from the disc pipe assembly, the clamping device is arranged between the bottom of the guide channel and the wellbore of the oil well, in other words, the bottom of the guide channel (or the arc-shaped track part), the clamping device and the wellbore are arranged on a straight line, so as to guide the flexible pipe unwound from the disc pipe assembly through the cooperation of the guide limiting part and the arc-shaped track part, so that the flexible pipe coming out of the bottom of the guide channel can pass through the clamping device in a vertical posture and enter the wellbore, thereby not only effectively reducing the bending angle of the flexible pipe between the disc pipe assembly and the clamping device, improving the straightness of the flexible pipe entering the wellbore, avoiding the wear between the bent flexible pipe and the inner wall of the wellbore, and improving the lowering effect of the flexible pipe, but also effectively reducing the wear between the flexible pipe passing through the clamping device and the clamping device, so as to ensure the quality of the flexible pipe entering the wellbore and correspondingly reduce the risk of leakage of the flexible pipe due to excessive pressure during the oil and gas conveying of the flexible pipe in the later period. Furthermore, since the guide limiting part is arranged outside the arc-shaped track part, the guide limiting part can also limit the flexible pipe, so as to prevent the flexible pipe from separating from the guide support, and ensure the movement reliability of the flexible pipe during the process of passing through the guide channel. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the flexible pipe installation system in the embodiment of the utility model;

[0025] Figure 2 It is a structural schematic view of the flexible pipe installation system in the embodiment of the utility model;

[0026] Figure 3It is a structure schematic view of the guide support in the embodiment of the utility model;

[0027] Figure 4 It is a structure schematic view of the first guide wheel structure in the embodiment of the utility model;

[0028] Figure 5 It is a radial section structure schematic view of the first guide wheel structure in the embodiment of the utility model;

[0029] Figure 6 It is a structure schematic view of the guide assembly and the support surface in the embodiment of the utility model;

[0030] Figure 7 It is a structure schematic view of the coil assembly and the support surface in the embodiment of the utility model.

[0031] Mark explanation:

[0032] 100-coil assembly;110-reel support seat;120-second pin shaft;130-reel;131-reel body;132-second guide wheel structure;133-second limiting rod;200-guide assembly;210-guide support seat;220-guide support;230-support body;240-arc track part;241-first guide wheel structure;2410-first pin shaft;2411-first guide wheel;24110-first annular groove;2412-buffer structure;250-guide limiting part;2501-first limiting rod;260-lifting structure;261-lifting base;262-lifting driving device;263-lifting plate;264-telescopic rod;300-clamping device;400-flexible pipe;500-support surface;600-well hole. Specific implementation

[0033] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail below with the help of the drawings. Although some embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be realized in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided to make the utility model more thorough and complete. It should be understood that the drawings and embodiments of the utility model are only for illustrative purposes, and are not used to limit the protection scope of the utility model.

[0034] The Z axis in the drawings represents a vertical direction, that is, an up-down position, and a positive direction of the Z axis represents an upward direction, and a negative direction of the Z axis represents a downward direction; the X axis in the drawings represents a horizontal direction and is designated as a left-right position, and a positive direction of the X axis represents a right side, and a negative direction of the X axis represents a left side; and the Y axis in the drawings represents a front-rear position, and a positive direction of the Y axis represents a front side, and a negative direction of the Y axis represents a rear side. It should be noted that the meanings of the aforementioned Z axis, Y axis and X axis are only for facilitating the description of the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements indicated having to have a specific orientation, to be constructed and operated in a specific orientation, and therefore should not be understood as limiting the utility model.

[0035] The term "comprising" and variations thereof as used herein are open-ended, that is, "comprising but not limited to"; the term "based on" is "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions are given throughout the description. It should be noted that the terms "first", "second", and the like in the utility model are only used to distinguish different devices, modules or units, and are not used to limit the functions performed by these devices, modules or units or the mutual dependency relationship.

[0036] It should be noted that the modification of "one" or "multiple" in the utility model is illustrative rather than limiting, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0037] In view of the problems in the prior art, the embodiment provides a flexible pipe winding and unwinding device and a flexible pipe installation system.

[0038] As shown in Figure 1 , Figure 2 and Figure 6 , the utility model provides a flexible pipe winding and unwinding device, which comprises a coiled pipe assembly 100 and a guide assembly 200, the guide assembly 200 comprises a guide support seat 210 and a guide support 220, the guide support seat 210 and the coiled pipe assembly 100 are arranged at intervals on a support surface 500, and the guide support 220 is arranged on the guide support seat 210.

[0039] The guiding support 220 comprises a support body 230, an arc-shaped track portion 240 and a guiding limiting portion 250. The arc-shaped track portion 240 is arranged on the support body 230 and is vertically arranged. The guiding limiting portion 250 is arranged on the support body 230 and is located outside the arc-shaped track portion 240. An arc-shaped guiding channel is formed between the arc-shaped track portion 240 and the guiding limiting portion 250. One end of the guiding channel is arranged above a clamping device 300 of a flexible pipe installation system. The clamping device 300 is arranged above a well hole 600 of an oil well.

[0040] The arc-shaped track portion 240 is arranged on the support body 230 and is vertically arranged. The guiding limiting portion 250 is arranged on the support body 230 and is located outside the arc-shaped track portion 240. An arc-shaped guiding channel is formed between the arc-shaped track portion 240 and the guiding limiting portion 250. One end of the guiding channel is arranged above a clamping device 300 of a flexible pipe installation system. The clamping device 300 is arranged above a well hole 600 of an oil well.

[0041] Specifically, the support surface 500 can be an oil well platform or other ground or building facilities having a fixed support function. The coil pipe assembly 100 is arranged apart from the guiding assembly 200. For example, the guiding assembly 200 can be arranged on the left side of the coil pipe assembly 100. The flexible pipe 400 can be pre-wound on the coil pipe assembly 100, so that the flexible pipe 400 on the coil pipe assembly 100 can have enough space to pass around the arc-shaped track portion 240 of the guiding assembly 200 after being unwound.

[0042] The guiding support 220 is used to guide the unwound flexible pipe 400 on the coil pipe assembly 100 in an arc shape, so that the flexible pipe 400 coming out of the guiding channel can pass through the clamping device 300 in a vertical posture and enter the well hole 600 below. The clamping device 300 is used to clamp or loosen the flexible pipe 400.

[0043] The arc-shaped track portion 240 is vertically arranged, that is, the arc-shaped track portion 240 extends in a vertical plane, so that the arc-shaped guiding channel formed between the arc-shaped track portion 240 and the guiding limiting portion 250 also extends in the vertical plane.

[0044] The unwound flexible pipe 400 can pass through the guiding channel, and the flexible pipe 400 in the guiding channel can pass around or through the surface of the arc-shaped track portion 240, so as to guide the flexible pipe 400 to the clamping device 300 through the arc-shaped track portion 240, so that the flexible pipe 400 entering the clamping device 300 is in a vertical posture (i.e. a vertical posture), effectively avoiding the flexible pipe 400 being damaged by friction with the clamping device 300.

[0045] In combination Figure 6 As shown, the well hole 600 of the oil well can be directly below the clamping device 300, and the support surface 500 is provided with a through hole structure for the flexible pipe 400 to pass through.

[0046] In this embodiment, the flexible pipe 400 can be lowered into the wellbore 600 of the oil well by the following way, for example, the coiled tubing assembly 100 can be rotated counterclockwise to unwind the flexible pipe 400 wound on the coiled tubing assembly 100, the end of the flexible pipe 400 passes through the arc-shaped guide channel between the arc-shaped track portion 240 and the guide limiting portion 250 of the guide support 220, and moves around the arc direction of the arc-shaped track portion 240. Since one end of the guide channel is arranged above the clamping device 300 of the flexible pipe installation system, and the clamping device 300 is arranged above the wellbore 600 of the oil well, the flexible pipe 400 passing around the arc-shaped track portion 240 can smoothly pass through the clamping device 300 and then enter the wellbore 600. The clamping device 300 is used to adjust the lowering speed of the flexible pipe 400 into the wellbore 600 and assist the connection of adjacent two sections of the flexible pipe by clamping or loosening the flexible pipe 400, so as to realize the lowering of the flexible pipe 400 into the wellbore 600, and prepare for the subsequent oil and gas transportation work of the oil well. When the flexible pipe 400 needs to be taken out after the oil and gas transportation work is completed, the coiled tubing assembly 100 can be rotated clockwise to pull out the flexible pipe 400 from the wellbore 600. In the process of pulling out, the flexible pipe 400 is wound on the coiled tubing assembly 100 again after passing through the clamping device 300 and the guide channel, so as to realize the folding work of the flexible pipe 400.

[0047] In the process of lowering the flexible pipe 400 on the coil assembly 100 into the well hole 600, since the guide support 220 is arranged on the support surface 500 such as an oil well platform by being spaced apart from the coil assembly 100 through the guide support seat 210, and the clamping device 300 is arranged between the guide channel and the well hole 600 of the oil well, in other words, the bottom end of the guide channel (or the arc track portion 240), the clamping device 300 and the well hole 600 are in a straight line, the flexible pipe 400 unwound from the coil assembly 100 is arc-guided through the cooperation of the guide limiting portion 250 and the arc track portion 240, so that the flexible pipe 400 coming out of the bottom end of the guide channel can pass through the clamping device 300 in a vertical posture and enter the well hole 600, thereby not only effectively reducing the bending angle of the flexible pipe 400 between the coil assembly 100 and the clamping device 300 to improve the straightness of the flexible pipe 400 entering the well hole 600, avoiding the wear between the bent flexible pipe 400 and the inner wall of the well hole 600, and improving the lowering effect of the flexible pipe 400, but also effectively reducing the wear between the flexible pipe 400 and the clamping device 300 to ensure the quality of the flexible pipe 400 entering the well hole 600, thereby reducing the risk of leakage of the flexible pipe 400 due to excessive pressure during oil and gas transportation. Furthermore, since the guide limiting portion 250 is located outside the arc track portion 240, the guide limiting portion 250 can also limit the flexible pipe 400 to prevent the flexible pipe 400 from being separated from the guide support 220, thereby ensuring the movement reliability of the flexible pipe 400 during the process of passing through the guide channel.

[0048] Optionally, in combination with Figure 3 As shown in the figure, the support body 230 is a fan-shaped support structure having a first arc-shaped guide surface, and the arc track portion 240 includes a plurality of first guide wheel structures 241, which are arranged on the support body 230 along the first arc-shaped guide surface, and the plurality of first guide wheel structures 241 are used for the flexible pipe 400 to pass through.

[0049] Specifically, in combination with Figure 2 As shown in the figure, along Figure 2 the plane of the XZ axis of the coordinate system, the support body 230 can be substantially fan-shaped, so the support body 230 is a fan-shaped support structure; and the arrangement direction of the plurality of first guide wheel structures 241 can be an arc surface, which can be a first arc-shaped guide surface.

[0050] The plurality of first guide wheel structures 241 can be spaced apart along the first arc-shaped guide surface, and the curvature of the first arc-shaped guide surface can be greater than or equal to 45 degrees.

[0051] In the optional embodiment, the first guide wheel structures 241 are arranged on the support body 230 along the first arc-shaped guide surface, so that the flexible pipe 400 can move along the first guide wheel structures 241 arranged in an arc shape when penetrating into the guide channel, and the first guide wheel structures 241 have a certain support and guiding effect on the flexible pipe 400, so as to improve the moving speed and smoothness of the flexible pipe 400 in the guide channel.

[0052] Optionally, in combination with Figure 4 As shown in the figure, the first guide wheel structure 241 comprises a first pin shaft 2410 and a first guide wheel 2411, the first pin shaft 2410 is arranged in the support body 230, and the first guide wheel 2411 is sleeved on the first pin shaft 2410, and the first guide wheel 2411 is used for rotating around the axis of the first pin shaft 2410.

[0053] The middle part of the first guide wheel 2411 is provided with a first annular groove 24110, the axis of the first annular groove 24110 coincides with the axis of the first pin shaft 2410, and the first annular groove 24110 is used for the flexible pipe 400 to pass through.

[0054] Specifically, the support body 230 can comprise two first arc-shaped plates arranged at intervals, and the two first arc-shaped plates can be arranged along Figure 2 the Y-axis direction of the coordinate system; each first guide wheel structure 241 can comprise a first pin shaft 2410 and a first guide wheel 2411, and the two ends of the first pin shaft 2410 are connected to the two first arc-shaped plates of the support body 230, wherein the first pin shaft 2410 can rotate relative to the two first arc-shaped plates, or can be fixedly connected with the first arc-shaped plates; the first guide wheel 2411 can be sleeved outside the first pin shaft 2410, and the first guide wheel 2411 can rotate around the axis of the first pin shaft 2410.

[0055] The middle part of the first guide wheel 2411 is provided with a first annular groove 24110, which can be a gradually changing groove structure, for example, the diameter of the two ends to the middle part of the first guide wheel 2411 is smaller, in other words, the diameter of the two ends of the first guide wheel 2411 is larger than the diameter of the middle part of the first guide wheel 2411; wherein the axis of the first pin shaft 2410 (see the dot line in the figure) is represented by the letter G. The central axis of the first annular groove 24110 coincides with the central axis of the first pin shaft 2410. Figure 4

[0056] ​In this optional embodiment, since the first guide wheel 2411 is configured to rotate around the axis of the first pin shaft 2410, when the flexible pipe 400 passes through the first guide wheel structure 241, the movement of the flexible pipe 400 can drive the first guide wheel 2411 to rotate around the axis of the first pin shaft 2410 by friction, so as to reduce the friction between the flexible pipe 400 and the first guide wheel 2411, and ensure the smooth movement of the flexible pipe 400 when passing through the surface of the first guide wheel 2411. In addition, since the middle part of each first guide wheel 2411 is provided with a first annular groove 24110, the flexible pipe 400 can pass through the first annular groove 24110 of the first guide wheel 2411, so as to limit the flexible pipe 400 through the first annular groove 24110, so as to reduce the offset amount generated by the flexible pipe 400 when moving on the surface of the arc-shaped track part 240.

[0057] Optionally, in combination with Figure 5 As shown in the drawings, the first guide wheel structure 241 further comprises a buffer structure 2412, the first guide wheel 2411 has a first through hole penetrating through the axial direction, the first pin shaft 2410 is arranged in the first through hole, the buffer structure 2412 is arranged between the inner wall of the first through hole and the first pin shaft 2410, and the first guide wheel 2411 is configured to move along the radial direction of the first guide wheel 2411 to deform the buffer structure 2412.

[0058] Specifically, Figure 5 The first guide wheel structure 241 is configured to move along the radial direction of the first guide wheel 2411 to deform the buffer structure 2412. Figure 5 The cross-sectional structure diagram of the first guide wheel structure 241 is obtained by cutting the first guide wheel structure 241 along the plane where the XZ axis of the coordinate system is located. The first guide wheel 2411 has a first through hole, the axis of the first through hole coincides with the axis of the first guide wheel 2411, and the inner diameter of the first through hole is larger than the first pin shaft 2410, so as to arrange the buffer structure 2412 between the first pin shaft 2410 and the inner wall of the first through hole.

[0059] The buffer structure 2412 can be an annular ring structure with elasticity, for example, a rubber ring, a silica gel ring or the like with elastic properties. The inner wall of the buffer structure 2412 can be connected with the first pin shaft 2410, and the inner wall of the buffer structure 2412 can be connected with the inner wall of the first through hole of the first guide wheel 2411, so as to avoid the buffer structure 2412 from being separated from the first through hole.

[0060] In addition, the buffer structure 2412 can also be a compression spring structure, for example, the compression spring structure is arranged along the radial direction of the first guide wheel 2411, and the two ends of the compression spring structure are respectively connected with the first pin shaft 2410 and the inner wall of the first through hole of the first guide wheel 2411, so as to avoid the buffer structure 2412 from being separated from the first through hole.

[0061] In the optional embodiment, the buffer structure 2412 is arranged between the inner wall of the first through hole of the first guide wheel 2411 and the outer wall of the first pin shaft 2410. When the flexible pipe 400 passes through the first guide wheel structure 241, the flexible pipe 400 will exert pressure on the first guide wheel 2411 under the action of gravity. At this time, the buffer structure 2412 is compressed to deform, thereby buffering the flexible pipe 400, reducing the hard contact between the flexible pipe 400 and the first guide wheel 2411, and further reducing the friction between the flexible pipe 400 and the first guide wheel 2411, so as to ensure the arc-shaped guiding effect of the arc-shaped track part 240 on the flexible pipe 400 and improve the smoothness and safety of the movement of the flexible pipe 400.

[0062] Optionally, in combination with Figure 3 As shown, the support body 230 further has a second arc-shaped guiding surface, which is located outside the first arc-shaped guiding surface.

[0063] The guiding limiting part 250 comprises a plurality of first limiting rods 2501, and the plurality of first limiting rods 2501 are arranged at intervals along the second arc-shaped guiding surface.

[0064] Specifically, the arrangement direction of the plurality of first limiting rods 2501 can be an arc surface of the second arc-shaped guiding surface.

[0065] The plurality of first limiting rods 2501 can be arranged at intervals along the second arc-shaped guiding surface.

[0066] The support body 230 further comprises two second arc-shaped plates, and the two second arc-shaped plates can be arranged at intervals along Figure 2 the Y-axis direction of the coordinate system; the two ends of each first limiting rod 2501 are respectively connected to the two second arc-shaped plates of the support body 230; and the second arc-shaped plate can be located outside the first arc-shaped plate.

[0067] In the optional embodiment, the plurality of first limiting rods 2501 are arranged at intervals along the second arc-shaped guiding surface on the support body 230, and the first limiting rod 2501 can be located outside the first guide wheel structure 241. When the flexible pipe 400 passes into the guiding channel, the plurality of first limiting rods 2501 arranged at intervals in an arc shape not only have a certain guiding effect on the flexible pipe 400, but also enable the flexible pipe 400 to pass through the clamping device 300 in a vertical posture from the bottom end of the guiding channel, and the plurality of first limiting rods 2501 also have a limiting effect on the flexible pipe 400, thereby effectively preventing the flexible pipe 400 from being separated from the guiding support 220.

[0068] Optionally, the guide support seat 210 can be directly arranged on the support surface 500, or the guide support seat 210 is arranged on the support surface 500 through the lifting structure 260. If the guide support seat 210 is arranged on the support surface 500 through the lifting structure 260, in combination with Figure 6 As shown in the figure, the guide assembly 200 further comprises a lifting structure 260, the lifting structure 260 comprises a lifting base 261, a lifting driving device 262 and a lifting plate 263, the lifting base 261 is arranged on the support surface 500, the upper part of the lifting plate 263 is arranged with the guide support seat 210, the lifting driving device 262 is arranged between the lifting base 261 and the lifting plate 263, the lifting driving device 262 is connected with the lifting plate 263, and is used to drive the lifting plate 263 to drive the guide support seat 210 and the guide bracket 220 to perform lifting action.

[0069] Specifically, the lifting base 261 can be arranged on the support surface 500, the lifting driving device 262 is arranged on the upper part of the lifting base 261, the lifting end of the lifting driving device 262 can be connected with the lifting plate 263, and the guide support seat 210 can be mounted on the lifting plate 263.

[0070] The lifting driving device 262 is used to drive the lifting plate 263 to drive the guide support seat 210 to perform lifting action; wherein the lifting driving device 262 can be a vertically arranged electric push rod, a hydraulic cylinder, a hydraulic oil cylinder, a rotary motor and a ball screw element combination, as long as various lifting driving devices capable of driving the lifting plate 263 to perform lifting action are suitable for the technical solution, which is not limited here.

[0071] In the optional embodiment, the lifting base 261 of the lifting structure 260 is arranged on the support surface 500, and the upper part of the lifting plate 263 of the lifting structure 260 is arranged with the guide support seat 210, so that according to the specifications of the flexible pipe 400 in the oil well construction site (such as the diameter of the flexible pipe, the bending angle requirement), the distance between the coiled tubing assembly 100 and the well hole 600 and other factors, the height of the guide bracket 220 can be adjusted through the lifting structure 260, so that the height of the guide bracket 220 matches the height of the coiled tubing assembly 100, so as to effectively reduce the bending angle of the flexible pipe 400 unfolded from the coiled tubing assembly 100 when entering the guide channel, and the flexible pipe 400 coming out of the guide channel of the guide bracket 220 can pass through the clamping device 300 in a vertical posture and smoothly enter the well hole 600, so as to improve the lowering effect of the flexible pipe 400, and can also be suitable for lowering operation of flexible pipes 400 of different specifications (such as diameter), increasing the application range and improving the universality.

[0072] Optionally, in combination with Figure 6As shown, the lifting structure 260 further comprises a plurality of telescopic rods 264, which are circumferentially spaced around the lifting driving device 262, and the two axial ends of each telescopic rod 264 are connected with the lifting plate 263 and the lifting base 261 respectively.

[0073] Specifically, the circumferential direction of the lifting driving device 262 is provided with a plurality of telescopic rods 264, for example, the number of telescopic rods 264 is at least four, and they are arranged in a rectangular ring. The two ends of the telescopic rod 264, for example, the upper and lower ends, are connected with the lifting plate 263 and the lifting base 261 respectively.

[0074] The telescopic rod 264 can be elongated with the lifting action of the lifting plate 263, or shortened with the lowering action of the lifting plate 263.

[0075] The telescopic rod 264 can adopt the following structure, for example, the telescopic rod 264 comprises a plurality of telescopic sections arranged in its axial direction, and two adjacent telescopic sections are connected in a sliding sleeve manner, for example, when the lifting plate 263 is lowered, part of a telescopic section can slide into the adjacent other telescopic section; when the lifting plate 263 is raised, part of a telescopic section can slide out of the adjacent other telescopic section.

[0076] In this optional embodiment, since the plurality of telescopic rods 264 are circumferentially spaced around the lifting driving device 262, in other words, the lifting driving device 262 is located in the region between the plurality of telescopic rods 264 arranged in a ring, when the lifting driving device 262 drives the lifting plate 263 to perform the lifting or lowering action, the top end of the telescopic rod 264 can perform the corresponding elongation or shortening action with the lifting plate 263, so that the bottom of the lifting plate 263 is uniformly stressed, reducing the possibility of tilting of the lifting plate 263 during lifting, and accordingly ensuring the stability and reliability of the height adjustment of the guide bracket 220.

[0077] Optionally, in combination with Figure 7 As shown, the coil assembly 100 comprises a reel support seat 110, a second pin shaft 120 and a winding drum 130, the reel support seat 110 is arranged on the support surface 500, the winding drum 130 is arranged on the reel support seat 110 through the second pin shaft 120, and the winding drum 130 is arranged to rotate around the axis of the second pin shaft 120.

[0078] Specifically, the reel support seat 110 can be mounted on the support surface 500, the reel support seat 110 can include two triangular supports arranged at intervals, the two ends of the second pin shaft 120 are respectively threaded through the corresponding triangular supports, the winding drum 130 is sleeved on the second pin shaft 120, and the winding drum 130 can rotate around the axis of the second pin shaft 120, so that the reel support seat 110 provides support for the winding drum 130, so that the winding drum 130 can be separated from the support surface 500; the winding drum 130 is used for winding the flexible pipe 400.

[0079] The winding drum 130 can be driven to rotate around the axis of the second pin shaft 120 by an electric method, which can reduce labor cost and workload; for example, a rotary motor can be directly or indirectly fixed on the support surface, the motor shaft of the rotary motor can be connected with the winding drum 130 through a speed reducer, and the speed reducer can transmit the rotary driving force of the rotary motor to the winding drum 130 to realize the rotary motion of the winding drum 130, wherein the clockwise or counterclockwise rotation of the winding drum 130 can be realized by adjusting the forward or reverse rotation of the rotary motor.

[0080] In the optional embodiment, since the winding drum 130 is arranged on the reel support seat 110 through the second pin shaft 120, and the winding drum 130 is used for winding the flexible pipe 400, the flexible pipe 400 on the winding drum 130 can be unwound by counterclockwise rotating the winding drum 130, so as to facilitate guiding the flexible pipe 400 to the clamping device 300 through the guide assembly 200, and entering the well hole 600 through the clamping device 300; or the flexible pipe 400 in the well hole 600 can be pulled out by clockwise rotating the winding drum 130, and the flexible pipe 400 is wound and folded on the winding drum 130 along with the clockwise rotation of the winding drum 130.

[0081] Optionally, in combination with Figure 7 As shown, the winding drum 130 includes a winding drum body 131, a second limiting rod 133 and a plurality of second guide wheel structures 132, the winding drum body 131 is circumferentially provided with a plurality of second guide wheel structures 132 arranged in a ring shape at intervals, the second limiting rod 133 is arranged on the winding drum body 131 and is located outside the second guide wheel structure 132, the plurality of second guide wheel structures 132 arranged in a ring shape are used for winding the flexible pipe 400, and the flexible pipe 400 is located between the second guide wheel structure 132 and the second limiting rod 133.

[0082] Specifically, the winding drum body 131 can be a ring-shaped frame structure, a plurality of second guide wheel structures 132 are arranged in a ring shape on the winding drum body 131, and each second guide wheel structure 132 can rotate; the number of second limiting rods 133 is at least one, which can be arranged on the winding drum body 131 and outside the second guide wheel structure 132, the flexible pipe 400 can be wound outside the plurality of second guide wheel structures 132 arranged in a ring shape, and between the second guide wheel and the second limiting rod 133.

[0083] If the number of second limiting rods 133 is more than two, the plurality of second limiting rods 133 can be arranged in a ring shape on the circumferential outer edge of the winding drum body 131.

[0084] The second guide wheel structure 132 can have the same structure as the first guide wheel structure 241, for example, the second guide wheel structure 132 can include a third pin shaft and a second guide wheel, the two ends of the third pin shaft are arranged through the winding drum body 131, the second guide wheel is sleeved on the third pin shaft, and is used for rotating around the axis of the third pin shaft.

[0085] Because the flexible pipe has a certain hardness, it needs to meet the minimum bending angle during winding on the winding drum 130, for example, if the diameter of the winding drum 130 is small, it may cause the flexible pipe wound on the winding drum 130 to exceed the minimum bending angle, so that the flexible pipe is excessively bent and damaged, therefore, the diameter of the annulus surrounded by the plurality of second guide wheel structures 132 in the winding drum 130 can be greater than or equal to 22 times the diameter of the flexible pipe 400.

[0086] In the optional embodiment, because the flexible pipe 400 is wound on the surface of the plurality of second guide wheel structures 132 arranged in a ring shape, and the flexible pipe 400 is between the second guide wheel structure 132 and the second limiting rod 133, the plurality of second guide wheel structures 132 play a certain supporting role on the flexible pipe 400, and the second limiting rod 133 can be used to prevent the flexible pipe 400 from being separated from the winding drum 130 during the unwinding or winding on the winding drum 130, so as to ensure the stability of the winding action of the flexible pipe 400 on the winding drum 130.

[0087] The flexible pipe installation system provided by the embodiment of the utility model comprises a clamping device 300 and a flexible pipe winding and unwinding device as described in the above embodiment.

[0088] The clamping device 300 can be arranged on the support surface 500 and above the well hole 600 of the oil well. The flexible pipe can be applied to the drilling scene of soil or rock, and can be used for conveying oil, gas, water, soluble mineral slurry and the like extracted from the well hole.

[0089] Since the length of the flexible pipe lowered into the well hole is long, the length can be dozens, hundreds or even thousands of meters, the flexible pipe lowered into the well hole can be in a multi-section structure as a whole, the adjacent two sections of the flexible pipe can be communicated through a coupling, and the clamping device is mainly used for assisting the communication with the next section of the flexible pipe by clamping and fixing one section of the flexible pipe.

[0090] For example, the flexible pipe lowered into the well hole can be defined as a previous section of the flexible pipe, the flexible pipe above the support surface can be defined as a next section of the flexible pipe, after most of the previous section of the flexible pipe is lowered into the well hole, the end of the previous section of the flexible pipe is reserved above the clamping device, at this time, the clamping device 300 can perform a clamping action on the end of the previous section of the flexible pipe to prevent the previous section of the flexible pipe in the well hole from descending under the action of gravity, then the next section of the flexible pipe can be unwound by the reel 130, the next section of the flexible pipe is guided to the upper side of the clamping device 300 through the guide assembly 200, at this time, the tail end of the previous section of the flexible pipe and the head end of the next section of the flexible pipe can be connected and communicated through a coupling, after the connection and communication, the clamping device performs a loosening action on the flexible pipe, so as to lower the next section of the flexible pipe into the well hole, and the process is repeated to realize the connection of the multiple sections of the flexible pipe to form a whole flexible pipe.

[0091] In addition, the clamping device 300 can also clamp or loosen the deformed part of the flexible pipe 400 unwound by the reel 130, so that the deformed part of the flexible pipe returns to the original state.

[0092] As long as various pipe clamping devices 300 capable of clamping or loosening the flexible pipe 400 are suitable for the technical solution, the structure of the clamping device 300 is not limited.

[0093] The flexible pipe installation system of the embodiment has the same beneficial effects as the flexible pipe winding and unwinding device of the prior art, which will not be repeated here.

[0094] Although the utility model discloses as above, the protection scope of the utility model is not limited to this only. The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A flexible pipe deployment apparatus, characterised by, The application relates to a flexible pipe winding device, which comprises a coil assembly (100) and a guide assembly (200), the guide assembly (200) comprising a guide support base (210) and a guide support frame (220), the guide support base (210) and the coil assembly (100) being arranged on a support surface (500) at intervals, and the guide support frame (220) being arranged on the guide support base (210). The guide support frame (220) comprises a frame body (230), an arc-shaped track part (240) and a guide limiting part (250), the arc-shaped track part (240) being arranged on the frame body (230) and vertically arranged, the guide limiting part (250) being arranged on the frame body (230) and outside the arc-shaped track part (240), an arc-shaped guide channel being formed between the arc-shaped track part (240) and the guide limiting part (250), one end of the guide channel being arranged above a clamping device (300) of a flexible pipe mounting system, and the clamping device (300) being arranged above a well hole (600) of an oil well. The coil assembly (100) is used for winding a flexible pipe (400), and the guide channel is used for guiding the flexible pipe (400) provided by the coil assembly (100) to the clamping device (300).

2. A flexible pipe deployment apparatus according to claim 1, characterised in that, The frame body (230) is a fan-shaped support frame structure with a first arc-shaped guide surface, the arc-shaped track part (240) comprises a plurality of first guide wheel structures (241), the plurality of first guide wheel structures (241) are arranged on the frame body (230) at intervals along the first arc-shaped guide surface, and the plurality of first guide wheel structures (241) are used for the flexible pipe (400) to pass through.

3. A flexible pipe deployment apparatus according to claim 2, wherein, The first guide wheel structure (241) comprises a first pin shaft (2410) and a first guide wheel (2411), the first pin shaft (2410) is arranged through the frame body (230), the first guide wheel (2411) is arranged on the first pin shaft (2410), and the first guide wheel (2411) is used for rotating around the axis of the first pin shaft (2410). The middle part of the first guide wheel (2411) is provided with a first annular groove (24110), the axis of the first annular groove (24110) is coincident with the axis of the first pin shaft (2410), and the first annular groove (24110) is used for the flexible pipe (400) to pass through.

4. A flexible pipe deployment apparatus according to claim 3, wherein, The first guide wheel structure (241) further comprises a buffer structure (2412), the first guide wheel (2411) has a first through hole penetrating through the axial direction, the first pin shaft (2410) is arranged through the first through hole, the buffer structure (2412) is arranged between the inner wall of the first through hole and the first pin shaft (2410), and the first guide wheel (2411) is used for moving along the radial direction of the first guide wheel (2411) to make the buffer structure (2412) deform.

5. The flexible pipe deployment apparatus of claim 2, wherein, The frame body (230) further has a second arc-shaped guide surface, and the second arc-shaped guide surface is outside the first arc-shaped guide surface. The guiding and limiting part (250) comprises a plurality of first limiting rods (2501) which are arranged at intervals along the second arc-shaped guiding surface.

6. The flexible pipe deployment apparatus of claim 1, wherein, The guiding assembly (200) further comprises a lifting structure (260), the lifting structure (260) comprises a lifting base (261), a lifting driving device (262) and a lifting plate (263), the lifting base (261) is arranged on the supporting surface (500), the upper part of the lifting plate (263) is provided with the guiding support seat (210), the lifting driving device (262) is arranged between the lifting base (261) and the lifting plate (263), the lifting driving device (262) is connected with the lifting plate (263) and is used for driving the lifting plate (263) to drive the guiding support seat (210) and the guiding support (220) to perform lifting action.

7. A flexible pipe deployment apparatus according to claim 6, wherein, The lifting structure (260) further comprises a plurality of telescopic rods (264), the plurality of telescopic rods (264) are arranged at intervals around the circumference of the lifting driving device (262), and the two axial ends of the telescopic rod (264) are connected with the lifting plate (263) and the lifting base (261) respectively.

8. The flexible pipe deployment apparatus of claim 1, wherein, The coil pipe assembly (100) comprises a reel supporting seat (110), a second pin shaft (120) and a winding drum (130), the reel supporting seat (110) is arranged on the supporting surface (500), the winding drum (130) is arranged on the reel supporting seat (110) through the second pin shaft (120), and the winding drum (130) is used for rotating around the axis line of the second pin shaft (120).

9. A flexible pipe deployment apparatus according to claim 8, wherein, The winding drum (130) comprises a winding drum body (131), a second limiting rod (133) and a plurality of second guiding wheel structures (132), the plurality of second guiding wheel structures (132) arranged in annular intervals are arranged on the circumference of the winding drum body (131), the second limiting rod (133) is arranged on the winding drum body (131) and is located outside the second guiding wheel structure (132), the plurality of second guiding wheel structures (132) arranged in annular arrangement are used for winding the flexible pipe (400), and the flexible pipe (400) is located between the second guiding wheel structure (132) and the second limiting rod (133).

10. A flexible pipe installation system characterised by, The flexible pipe winding and unwinding device comprises a clamping device (300) and the flexible pipe winding and unwinding device as claimed in any one of claims 1 to 9.

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