CN212803102U

CN212803102U - Coiled tubing straightens device

Info

Publication number: CN212803102U
Application number: CN202021808096.1U
Authority: CN
Inventors: 何睦; 李相军
Original assignee: Sichuan Anton Oil & Gas Engineering Technology Service Co ltd
Current assignee: Sichuan Anton Oil & Gas Engineering Technology Service Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-03-26
Anticipated expiration: 2030-08-26

Abstract

A coiled tubing straightener, comprising: the supporting assembly comprises a bottom ring, wherein the bottom ring is provided with an outer convex plate, the bottom ring is provided with upward extending seats in a circumferential array, the upward extending seats are respectively provided with a supporting plate, the supporting plates are provided with assembling seats, the assembling seats are provided with upper rings, the upper rings are provided with upper extending rods, the upper ends of the upper extending rods are respectively provided with an L-shaped fixing plate, the L-shaped fixing plates are respectively provided with a gusset plate, and the outer convex plates are respectively penetrated with lower nail pieces; the straightening assembly comprises a pair of shells arranged between the L-shaped fixing plates, a plurality of adjusting mechanisms are arranged on two sides of each shell, straightening mechanisms are arranged at the other ends of the adjusting mechanisms, the straightening mechanisms are located in the shells and are used for adjusting the positions of the straightening mechanisms, and the straightening mechanisms are used for straightening the coiled tubing; the conveying assembly is provided with a pair of upper ends of the shells and is used for conveying the coiled tubing when the coiled tubing is straight. Can straighten coiled tubing to avoid coiled tubing spiral bending to appear, improve coiled tubing's intubate efficiency, have stronger practicality.

Description

Coiled tubing straightens device

Technical Field

The utility model relates to a coiled tubing engineering technical field especially relates to a coiled tubing straightens device.

Background

Various theoretical and experimental studies have shown that coiled tubing will first exhibit sinusoidal buckling during run in of the wellbore. With increasing axial load, it then evolves into helical bending. In the process of inducing and evolving the buckling behavior of the pipe column, the contact force between the pipe column and the well wall part is continuously increased along with the buckling behavior. Even if the friction coefficient between the pipe column and the well wall is continuously stable, the axial friction load borne by the pipe column is continuously increased until the self-locking phenomenon of the underground coiled tubing occurs, and finally the pipe column stops advancing due to the fact that the friction resistance is equal to the axial load.

When a coiled tubing injection head is used for continuously lowering the coiled tubing to the bottom of a well, the biggest problem is that the coiled tubing is buckled under the action of axial force. As this problem will be related to whether the coiled tubing string can be extended accurately and reliably to the designated work point downhole. Buckling, spiral bending or self-locking of the coiled tubing once occur, great influence will be generated on the operation efficiency and safety, and the current mainstream method for solving the problems mainly comprises two methods: 1. adding a hydraulic oscillation tool at the tail end of the coiled tubing string to change the axial buckling distribution of the coiled tubing; 2. and in the running process of the coiled tubing, pumping a metal resistance reducing agent into the shaft to change the friction coefficient between the coiled tubing string and the well wall.

However, the above two solutions can not meet the operation requirements under certain well conditions or requirements, for example, a hydraulic oscillator cannot be installed at the tail end of the coiled tubing during the production logging operation or the metal friction reducer cannot be pumped to reduce the buckling behavior of the coiled tubing, and therefore, the problem can be solved or avoided in the case of the above situation.

Disclosure of Invention

The utility model provides a coiled tubing device that straightens to solve the not enough of above-mentioned prior art, can straighten coiled tubing, thereby avoid coiled tubing spiral bending to appear, improve coiled tubing's intubate efficiency, have stronger practicality.

In order to realize the purpose of the utility model, the following technologies are adopted:

a coiled tubing straightener, comprising:

the supporting assembly comprises a bottom ring, wherein an outward convex plate extends outwards from the bottom ring in a circumferential array, an upward extending seat extends upwards from the bottom ring in a circumferential array, supporting plates are mounted on the upward extending seat, an assembling seat is arranged at the other end of each supporting plate, an upper ring is arranged on the assembling seat, an upward extending rod extends upwards from the upper ring in a circumferential array, L-shaped fixing plates are arranged at the upper ends of the upward extending rods, gusset plates are arranged on the L-shaped fixing plates, and lower nail pieces penetrate through the outward convex plate;

the straightening assembly comprises a pair of shells arranged between the L-shaped fixing plates, a plurality of adjusting mechanisms are arranged on two sides of each shell, straightening mechanisms are arranged at the other ends of the adjusting mechanisms, the straightening mechanisms are located in the shells and are used for adjusting the positions of the straightening mechanisms, and the straightening mechanisms are used for straightening the coiled tubing;

the conveying assembly is provided with a pair of upper ends of the shells and is used for conveying the coiled tubing when the coiled tubing is straight.

Furthermore, the lower nail piece comprises a lower nail rod penetrating through the outer convex plate, the lower end of the lower nail rod is provided with a conical head, and the upper end of the lower nail rod is provided with an end cap.

Furthermore, the radius of the bottom ring is larger than that of the upper ring, and the upper end of the support plate is obliquely arranged on the upper extension seat inwards.

Furthermore, the shell inside wall is provided with straight holes from top to bottom in a penetrating mode, straight grooves are formed in the two sides of the shell inside wall in an equal-interval array mode, moving grooves are communicated with the outer side ends of the straight grooves, assembling grooves are communicated with the outer side ends of the moving grooves, and the straight grooves on one side and the straight grooves on the other side are arranged at intervals.

Further, adjustment mechanism is including installing in the assembly shell of shell, assembly shell outside opening, the assembly shell open end is equipped with the end cover, the end cover is equipped with the actuating lever, actuating lever outside end is equipped with the carousel, the actuating lever other end is equipped with the drive wheel, the drive wheel is located the assembly shell, the drive wheel meshing has from the driving wheel, all be equipped with from the driving wheel and revolve the section of thick bamboo, be equipped with the screw thread in revolving the section of thick bamboo, the assembly shell is located to a section of thick bamboo soon, it all has the screw head to revolve the section of thick bamboo, screw head medial extremity all is equipped with the push rod, the push rod all takes shape there is the arc groove, the arc inslot all is equipped with the limiting.

Furthermore, the straightening mechanism comprises a pair of wing plates arranged on the mounting seat, a concave rotating part is arranged between the wing plates, the other end of the concave rotating part is provided with a rotating rod, the rotating rod is provided with a straightening wheel, a straightening arc groove is formed in the outer wall of the straightening wheel, the concave rotating part is positioned in the moving groove, and the straightening wheel is positioned in the straightening groove.

Further, conveying assembly is including installing in the uide bushing two pairs of shell upper end, and the uide bushing is located the both sides in more straight hole, and the picture peg has all been worn to the uide bushing, and the picture peg all is equidistant array be equipped with the jack, and the inserted bar has all been worn to the uide bushing, and the inserted bar all wears in the jack, and it is a pair of all being equipped with the delivery wheel between the assembly plate to every picture peg upper end, and the delivery wheel outer wall all takes shape there is the conveyer trough, and the delivery wheel all is connected with conveying motor.

The technical scheme has the advantages that:

the supporting component of the device stably supports the straightening component when the coiled tubing is straightened, so that the straightening component is far away from the ground to conveniently perform pipe inserting operation, the straightening component can straighten the coiled tubing, bending of the coiled tubing is avoided, and the conveying component is used for conveying the coiled tubing when the coiled tubing is straight. In operation, the supporting component is placed at the position of the insertion pipe to replace the lifting mode of a conventional crane, the bottom ring at the lower end of the supporting component is placed on the ground, then the position of the bottom ring is fixed through the lower nail piece, the device moves when the supporting component is placed at the position of the coiled tubing to be straightened, so that the straightening effect is influenced, the supporting plate arranged on the bottom ring plays a supporting role on the upper ring, the supporting plate forms a triangular supporting relation through the inclined design of the supporting plate, so that the supporting stability is improved, the straightening component can be fixed between the L-shaped fixing plate arranged at the upper end of the upper extension rod, then the length of the insertion plate inserted into the guide sleeve is adjusted according to the actual situation, the insertion rod is used for locking the insertion plate, the conveying motor is started simultaneously, the conveying wheel rotates under the driving of the conveying motor, and the rotation of the conveying wheel drives the coiled tubing to, when coiled tubing enters the shell through the straight hole, each rotary disc is continuously rotated, the rotary disc drives the driving rod to rotate, the driving rod rotates to drive the driving wheel to rotate, the driving wheel rotates to drive the driven wheels on two sides to rotate, the driven wheels rotate to drive the rotary cylinders to rotate, the rotary cylinders rotate to drive the screw heads to drive the push rods to push the wing plates to move forwards along the direction of the arc grooves until the straight arc grooves of the straight wheels act on the coiled tubing, and then the coiled tubing is continuously conveyed through the conveying assembly until the insertion of the coiled tubing is completed. The utility model discloses can straighten coiled tubing to avoid coiled tubing spiral bending to appear, improve coiled tubing's intubate efficiency, have stronger practicality.

Drawings

Fig. 1 shows a perspective view of a first embodiment.

Fig. 2 shows a perspective view of the second embodiment.

Fig. 3 shows a three-dimensional structure of one embodiment.

Fig. 4 shows a partial enlarged view at a.

Fig. 5 shows a partial enlarged view at B.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

Furthermore, the terms "substantially", and the like are intended to indicate that the relative terms are not necessarily strictly required, but may have some deviation. For example: "substantially equal" does not mean absolute equality, but because absolute equality is difficult to achieve in actual production and operation, certain deviations generally exist. Thus, in addition to absolute equality, "substantially equal" also includes the above-described case where there is some deviation. In this case, unless otherwise specified, terms such as "substantially", and the like are used in a similar manner to those described above.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, a coiled tubing straightening device comprises: supporting component 1, including end ring 10, end ring 10 is the outside extension of circumference array and has outer flange 11, end ring 10 is the upwards extension of circumference array and has last extension seat 13, on extend seat 13 and all install backup pad 14, the backup pad 14 other end is equipped with assembly seat 15, assembly seat 15 is equipped with and goes up ring 16, it is equipped with that ring 16 is circumference array and upwards extends and prolongs pole 17 to go up to be equipped with, on prolong pole 17 upper end and all be equipped with L shape fixed plate 18, L shape fixed plate 18 all is equipped with gusset 19, outer flange 11 has all worn down nail spare 12. The lower nail 12 comprises a lower nail rod 121 penetrating the outer convex plate 11, a conical head 122 is arranged at the lower end of the lower nail rod 121, and an end cap 120 is arranged at the upper end of the lower nail rod 121. The radius of the bottom ring 10 is larger than that of the upper ring 16, and the upper end of the support plate 14 is arranged on the upper extension seat 13 in an inward inclining way.

The straightening assembly 2 comprises a pair of shells 20 arranged between L-shaped fixing plates 18, a plurality of adjusting mechanisms 21 are arranged on two sides of each shell 20, straightening mechanisms 22 are arranged at the other ends of the adjusting mechanisms 21, the straightening mechanisms 22 are located in the shells 20, the adjusting mechanisms 21 are used for adjusting the positions of the straightening mechanisms 22, and the straightening mechanisms 22 are used for straightening coiled tubing. The inside wall of the shell 20 is provided with straight holes 200 from top to bottom, both sides of the inside wall of the shell 20 are equally spaced and arrayed, straight grooves 201 are formed, the outer ends of the straight grooves 201 are communicated with moving grooves 202, the outer ends of the moving grooves 202 are communicated with assembling grooves 203, and the straight grooves 201 on one side and the straight grooves 201 on the other side are arranged at intervals. The adjusting mechanism 21 comprises an assembling shell 210 installed on the outer shell 20, the outer side of the assembling shell 210 is provided with an opening, the opening end of the assembling shell 210 is provided with an end cover 211, the end cover 211 is provided with a driving rod 212, the outer side end of the driving rod 212 is provided with a turntable 213, the other end of the driving rod 212 is provided with a driving wheel 214, the driving wheel 214 is located in the assembling shell 210, the driving wheel 214 is meshed with a driven wheel 215, the driven wheel 215 is provided with a rotary cylinder 216, threads are arranged in the rotary cylinder 216, the rotary cylinder 216 is arranged on the assembling shell 210, the rotary cylinder 216 is located in an assembling groove 203, a screw head is screwed in the rotary cylinder 216, the inner side end of the screw head is provided with a push rod 217, the push rod 217 is provided with an arc groove, a limiting plate. The straightening mechanism 22 comprises a pair of wing plates 224 arranged on the mounting base 219, a concave rotating member 220 is arranged between the wing plates 224, the other end of the concave rotating member 220 is provided with a rotating rod 221, the rotating rod 221 is provided with a straightening wheel 222, a straightening arc groove 223 is formed on the outer wall of the straightening wheel 222, the concave rotating member 220 is positioned in the moving groove 202, and the straightening wheel 222 is positioned in the straightening groove 201.

The conveying assemblies 3 are provided with the upper ends of the shells 20, and the number of the conveying assemblies is one pair, and the conveying assemblies are used for conveying the coiled tubing when the coiled tubing is straight. Conveying assembly 3 is including installing in the 30 two pairs of uide bushing of shell 20 upper end, uide bushing 30 is located the both sides of more straight hole 200, picture peg 31 has all been worn to uide bushing 30, picture peg 31 all is being equipped with jack 310 of equidistant array, inserted bar 32 has all been worn to uide bushing 30, inserted bar 32 all wears in jack 310, every is all equipped with between assembly plate 33 and all is equipped with delivery wheel 35 a pair of to picture peg 31 upper end, delivery wheel 35 outer wall all takes shape there is conveying trough 350, delivery wheel 35 all is connected with conveying motor 34.

The supporting component 1 of the device stably supports the straightening component 2 when the coiled tubing is straightened, so that the straightening component 2 is far away from the ground to conveniently perform pipe inserting operation, the straightening component 2 can straighten the coiled tubing, the coiled tubing is prevented from being bent, and the conveying component 3 is used for conveying the coiled tubing when the coiled tubing is straightened. In operation, the supporting component 1 is placed at the position of the insertion pipe to replace the lifting mode of a conventional crane, the bottom ring 10 at the lower end of the supporting component 1 is placed on the ground, then the position of the bottom ring 10 is fixed through the lower nail 12, the device moves when the coiled tubing is straightened, so that the straightening effect is influenced, the supporting plate 14 arranged on the bottom ring 10 plays a role of supporting the upper ring 16, the supporting plate 14 forms a triangular supporting relation through the inclined design of the supporting plate 14, so that the supporting stability is improved, the straightening component can be fixed between the L-shaped fixing plate 18 arranged at the upper end of the extension rod 17, then the length of the insertion plate 31 inserted into the guide sleeve 30 is adjusted according to the actual situation, the insertion rod 32 is used for locking the insertion rod, the conveying motor 34 is started, and the conveying wheel 25 rotates under the driving of the conveying motor 34, the rotation of the conveying wheel 25 will drive the coiled tubing to feed to the straighter assembly 2, when the coiled tubing enters the interior of the housing 20 through the straighter hole 200, each turntable 213 is continuously rotated, the rotation of the turntable 213 will drive the rotation of the driving rod 212, the rotation of the driving rod 212 will drive the rotation of the driving wheel 214, the rotation of the driving wheel 214 will drive the rotation of the driven wheels 215 at both sides, the rotation of the driven wheels 215 will drive the rotation of the rotary cylinder 216, and the rotation of the rotary cylinder 216 will drive the screw head to drive the push rod 217 to push the wing plate 224 forward along the direction of the arc groove until the straighter arc groove 223 of the straighter wheel 222 acts on the coiled tubing, and then the conveying assembly 3 will continuously convey the coiled tubing until the completion of the pipe insertion.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A coiled tubing straightens device which characterized in that includes:

the supporting assembly (1) comprises a bottom ring (10), wherein the bottom ring (10) is provided with an outer convex plate (11) which extends outwards in a circumferential array, the bottom ring (10) is provided with an upper extending seat (13) which extends upwards in the circumferential array, supporting plates (14) are respectively installed on the upper extending seats (13), an assembling seat (15) is arranged at the other end of each supporting plate (14), an upper ring (16) is arranged on each assembling seat (15), the upper ring (16) is in the circumferential array and is provided with an upper extending rod (17) which extends upwards, L-shaped fixing plates (18) are respectively arranged at the upper ends of the upper extending rods (17), gusset plates (19) are respectively arranged on the L-shaped fixing plates (18), and lower nail pieces (12) are respectively penetrated through the;

the straightening assembly (2) comprises a pair of shells (20) arranged between L-shaped fixing plates (18), a plurality of adjusting mechanisms (21) are arranged on two sides of each shell (20), straightening mechanisms (22) are arranged at the other ends of the adjusting mechanisms (21), the straightening mechanisms (22) are located in the shells (20), the adjusting mechanisms (21) are used for adjusting the positions of the straightening mechanisms (22), and the straightening mechanisms (22) are used for straightening the coiled tubing;

the conveying assemblies (3) are arranged at the upper end of the shell (20) and are paired and used for conveying the coiled tubing when the coiled tubing is straight.

2. The coiled tubing straightening device according to claim 1, wherein the lower nail member (12) comprises a lower nail rod (121) penetrating through the outer convex plate (11), a conical head (122) is arranged at the lower end of the lower nail rod (121), and an end cap (120) is arranged at the upper end of the lower nail rod (121).

3. The coiled tubing straightening device according to claim 1, characterized in that the radius of the bottom ring (10) is larger than that of the upper ring (16), and the upper end of the support plate (14) is provided with an inwardly inclined upper extension seat (13).

4. The coiled tubing straightening device according to claim 1, characterized in that a straight hole (200) is formed in the inner side wall of the housing (20) in a penetrating manner from top to bottom, straight grooves (201) are formed in the two sides of the inner side wall of the housing (20) in an equally spaced array, moving grooves (202) are communicated with the outer side ends of the straight grooves (201), assembling grooves (203) are communicated with the outer side ends of the moving grooves (202), and the straight grooves (201) on one side and the straight grooves (201) on the other side are arranged at intervals.

5. The coiled tubing straightening device according to claim 4, wherein the adjusting mechanism (21) comprises an assembly shell (210) arranged on the outer shell (20), the outer side of the assembly shell (210) is open, an end cover (211) is arranged at the open end of the assembly shell (210), a driving rod (212) is arranged on the end cover (211), a turntable (213) is arranged at the outer side end of the driving rod (212), a driving wheel (214) is arranged at the other end of the driving rod (212), the driving wheel (214) is positioned in the assembly shell (210), a driven wheel (215) is meshed with the driving wheel (214), the driven wheel (215) is respectively provided with a rotary cylinder (216), threads are arranged in the rotary cylinder (216), the rotary cylinders (216) are arranged in the assembly shell (210), the rotary cylinders (216) are positioned in the assembly grooves (203), screw heads are respectively screwed in the rotary cylinders (216), push rods (217) are respectively arranged at the inner side ends of the screw heads, arc grooves are respectively formed in the push rods (, the other end of the limit plate (218) is arranged on the inner wall of the shell (20), and the other end of the push rod (217) is provided with a mounting seat (219).

6. The coiled tubing straightening device according to claim 5, wherein the straightening mechanism (22) comprises a pair of wing plates (224) arranged on the mounting base (219), a concave rotating member (220) is arranged between the wing plates (224), a rotating rod (221) is arranged at the other end of the concave rotating member (220), a straightening wheel (222) is arranged on the rotating rod (221), a straightening arc groove (223) is formed in the outer wall of the straightening wheel (222), the concave rotating member (220) is positioned in the moving groove (202), and the straightening wheel (222) is positioned in the straightening groove (201).

7. The coiled tubing straightening device according to claim 1, wherein the conveying assembly (3) comprises two pairs of guide sleeves (30) which are arranged at the upper end of the shell (20), the guide sleeves (30) are positioned at two sides of the straightening hole (200), inserting plates (31) penetrate through the guide sleeves (30), the inserting plates (31) are provided with inserting holes (310) in an equally spaced array, inserting rods (32) penetrate through the guide sleeves (30), the inserting rods (32) penetrate through the inserting holes (310), an assembling plate (33) is arranged at the upper end of each pair of inserting plates (31), a pair of conveying wheels (35) are arranged between the assembling plates (33), conveying grooves (350) are formed in the outer walls of the conveying wheels (35), and the conveying wheels (35) are connected with conveying motors (34).