Tubing clamp

Abstract

A tubing clamp, relating to the technical field of workover operation, and comprising a mounting plate (1), a rotating shaft (2), a sleeve (3), an elevator head (4), and a tubing clamping plate (5), wherein the elevator head (4) arranged obliquely from left to right and from bottom to top and adapted to be inserted into a tubing is disposed on the sleeve (3); the tubing clamping plate (5) located on the lower side of the elevator head (4) is disposed on the rotating shaft (2); the spacing between the elevator head (4) and the tubing clamping plate (5) is greater than the wall thickness of the tubing; when the tubing is supported on the elevator head (4), the elevator head (4) can be tilted downwards along with the tubing and then pressed down by the tubing to approach the tubing clamping plate, thereby clamping the tubing in conjunction with the tubing clamping plate (5). The tubing clamp has a reasonable structure, and can clamp the tubing in tubing pulling operation and then pull the tubing to move together, such that there is no need to manually pull the tubing and tilt the tubing flat, thereby reducing the operation labor intensity of operators and improving the operation efficiency.

Description

Tubing clamp TECHNICAL FIELD

[0001] The present application relates to the technical field of oil well repair operation, and is a tubing clamp. BACKGROUND

[0002] The catwalk machine is used to complete the tubing tripping operation during the well repair operation. The existing catwalk machine generally comprises a slide, a sliding trolley arranged on the slide, and a receiving seat arranged on the trolley. The receiving seat is a supporting frame type. When the tubing tripping operation is performed, the upper end of the tubing is lifted by a lifting clamp, the lower end of the tubing is placed on the receiving seat, and the receiving seat is lowered along the slide with the sliding trolley. The lifting clamp continuously lowers the tubing until the tubing is poured into the catwalk machine. The lifting clamp is then released from the tubing. During the whole process, the receiving seat is only used to support the lower end of the tubing. The receiving seat cannot clamp the tubing to make the tubing move with it. Therefore, when the catwalk machine is located far away from the wellhead, the tubing cannot pull the lifting clamp away from the wellhead by only relying on the self-weight of the tubing when the tubing is poured to a small inclination angle. At this time, manual operation is needed to pull the tubing to make the lifting clamp deviate from the wellhead, so that the tubing can continue to be poured into the catwalk machine. This increases the labor intensity of the operation personnel during the tubing tripping operation.

[0003] A kind of well repair operation pipe rod intelligent telescopic conveying device is disclosed in Chinese patent document with application No. CN202110834758.5. The conveying device includes a catwalk frame, a telescopic component, a driving component, a jacking component, and a fixed hinge seat. The telescopic component is arranged on the catwalk frame. One end of the catwalk frame is arranged on the fixed hinge seat. The jacking component is arranged below the middle part of the catwalk frame. The driving component is arranged on the catwalk frame, close to one side of the fixed hinge seat. The telescopic component is connected with the driving component. The telescopic component includes a telescopic support, a first trolley sprocket, a second trolley sprocket, a closed trolley chain wound around the first trolley sprocket and the second trolley sprocket, a conveying trolley, and a trolley driving component for driving the second trolley sprocket. The telescopic support is arranged on the catwalk frame and can move transversely along the catwalk frame. The first trolley sprocket and the second trolley sprocket are arranged at the front and rear ends of the telescopic support, respectively. The conveying trolley is arranged on the trolley chain. In the device, the conveying trolley for receiving the lower end of the tubing is a tray structure. The tubing is poured and laid flat by relying on the self-weight. The conveying trolley cannot generate a traction force on the tubing. Once the catwalk frame cannot be extended to the exact position above the wellhead due to the limitation of the site working conditions, manual operation is needed to pull the tubing to pour and lay it flat. SUMMARY

[0004] The present application provides a tubing clamp, which overcomes the shortcomings of the prior art. The tubing clamp can effectively solve the problem that the tubing receiving seat of the existing catwalk machine cannot clamp the tubing during the tubing tripping operation.

[0005] The technical scheme of the present application is realized by the following measures: an oil pipe clamp, comprising a mounting plate, a rotating shaft, a sleeve, a radish head and an oil pipe clamp plate, the rotating shaft being rotatably mounted on the mounting plate along the front-rear direction, the sleeve being rotatably sleeved on the outer side of the rotating shaft, the first elastic reset member being arranged between the sleeve and the mounting plate, the second elastic reset member being arranged between the rotating shaft and the mounting plate, the radish head being arranged on the sleeve and being inclined from left to right and from bottom to top and being used for being inserted into the oil pipe, the oil pipe clamp plate being arranged on the rotating shaft and being located on the lower side of the radish head, the distance between the radish head and the oil pipe clamp plate being greater than the wall thickness of the oil pipe, the radish head being capable of being pressed down by the oil pipe to be close to the oil pipe clamp plate to clamp the oil pipe together with the oil pipe clamp plate when the oil pipe is received.

[0006] The following is a further optimization or / and improvement of the above-mentioned application scheme:

[0007] The sleeve is provided with a first constraint rod, and the rotating shaft is provided with a second constraint rod.

[0008] The first constraint rod comprises a first connecting rod and a first roller, the lower end of the first connecting rod is fixedly connected with the sleeve, and the upper end of the first connecting rod is rotatably mounted with the first roller; the second constraint rod comprises a second connecting rod and a second roller, the lower end of the second connecting rod is fixedly connected with the rotating shaft, and the upper end of the second connecting rod is rotatably mounted with the second roller.

[0009] The side of the oil pipe clamp plate close to the radish head is provided with a tooth that is adapted to the external thread of the end of the oil pipe; and the side of the radish head close to the oil pipe clamp plate and the side of the radish head away from the oil pipe clamp plate are both provided with anti-skid teeth.

[0010] The lower outer side of the radish head is provided with a limiting shoulder that can abut against the end of the oil pipe when the upper part of the radish head is inserted into the oil pipe.

[0011] The mounting plate is provided with a limiting column that abuts against the radish head and is used for preventing the radish head from being turned upward.

[0012] The first elastic reset member is a torsion spring or a tension spring, and the second elastic reset member is a torsion spring or a tension spring.

[0013] The present application has reasonable structure, and can clamp the oil pipe in the oil pipe operation, so as to pull the oil pipe to move together, thereby the oil pipe does not need to be manually pulled to be poured and laid flat, the labor intensity of the operation personnel is reduced, and the operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a front view of the structure of the best embodiment of the present application.

[0015] Fig. 2 is a perspective view of the best embodiment of the present application.

[0016] Fig. 3 is a front view of the structure of the best embodiment of the present application when it is installed on a power catwalk.

[0017] Fig. 4 is an enlarged structural schematic view of A in Fig. 3.

[0018] Fig. 5 is a front structural schematic view of the best embodiment of the present application when installed on a power catwalk.

[0019] Fig. 6 is an enlarged structural schematic view of B in Fig. 5.

[0020] The codes in the drawings are as follows: 1 is a mounting plate, 2 is a rotating shaft, 3 is a sleeve, 4 is a radish head, 5 is an oil pipe clamping plate, 6 is a first elastic reset member, 7 is a second elastic reset member, 8 is a first connecting rod, 9 is a first roller, 10 is a second connecting rod, 11 is a second roller, 12 is a clamping tooth, 13 is an anti-skid tooth, 14 is a limiting shoulder, 15 is a limiting column, 16 is a first track, 17 is a second track, 18 is a first pipe moving trolley, 19 is a second pipe moving trolley, 20 is a pipe body receiving seat, 21 is a first constraint guide rail, 22 is a second constraint guide rail, 23 is a supporting platform, and 24 is an oil pipe. DETAILED DESCRIPTION

[0021] The present application is not limited by the following examples, and the specific implementation can be determined according to the technical solution of the present application and the actual situation.

[0022] In the present application, in order to facilitate the description, the relative position relationship of each component is described according to the layout mode of the accompanying drawings, such as the position relationship of front, back, up, down, left, right, etc. is determined according to the layout direction of the accompanying drawings.

[0023] The present application will be further described below in conjunction with the examples and the accompanying drawings:

[0024] As shown in Figs. 1-6, the oil pipe clamp includes a mounting plate 1, a rotating shaft 2, a sleeve 3, a radish head 4, and an oil pipe clamping plate 5. The rotating shaft 2 is rotatably mounted on the mounting plate 1 along the front-back direction. The sleeve 3 is rotatably sleeved on the outside of the rotating shaft 2. The first elastic reset member 6 is arranged between the sleeve 3 and the mounting plate 1. The second elastic reset member 7 is arranged between the rotating shaft 2 and the mounting plate 1. The radish head 4 is arranged on the sleeve 3 and inclined from left to right and from bottom to top for insertion into the oil pipe. The oil pipe clamping plate 5 is arranged on the rotating shaft 2 below the radish head 4. The distance between the radish head 4 and the oil pipe clamping plate 5 is greater than the wall thickness of the oil pipe. When the oil pipe is received, the radish head 4 can be tilted downward and pressed downward by the oil pipe to approach the oil pipe clamping plate 5 to clamp the oil pipe together with the oil pipe clamping plate 5. According to the requirements, the radish head 4 clamps the oil pipe together with the oil pipe clamping plate 5 when the oil pipe is tilted to a certain angle, and the certain angle is not less than 30 degrees. The radish head 4 is a cylindrical structure with a tapered tip at the upper end. The diameter of the radish head 4 is smaller than the inner diameter of the oil pipe. The inclination angle of the radish head 4 is 80-85 degrees.

[0025] In use, the tubing clamp is installed on a power catwalk, the power catwalk comprising a first track 16, a second track 17, a first tubing trolley 18, a second tubing trolley 19, a first trolley driving mechanism and a second trolley driving mechanism; the first track 16 and the second track 17 are both inclined from left to right and from bottom to top, and the slope of the second track 17 is greater than that of the first track 16, the second track 17 is located on the lower side of the first track 16, the first tubing trolley 18 capable of moving between a first highest point position and a first lowest point position is slidably installed on the first track 16 by the first trolley driving mechanism, the first tubing trolley 18 is provided with a mounting position on the front side of the first track 16, the mounting plate 1 is installed on the mounting position, the second tubing trolley 19 capable of moving between a second highest point position and a second lowest point position is slidably installed on the second track 17 by the second trolley driving mechanism, and the second tubing trolley 19 is provided with a tubing body receiving seat 20 for receiving the tubing body on the front side of the second track 17.

[0026] The power catwalk further comprises a controller; the first trolley driving mechanism comprises a first driving motor, a magnetic powder clutch, a first driving sprocket, a first driven sprocket and a first chain, the first track 16 is provided with the first driving sprocket and the first driven sprocket, the first driving sprocket and the first driven sprocket are wound with the first chain, the output end of the first driving motor is in transmission connection with the input end of the magnetic powder clutch, the output end of the magnetic powder clutch is in transmission connection with the first driving sprocket, and the first tubing trolley 18 is connected with the first chain; the second trolley driving mechanism comprises a second driving motor, a second driving sprocket, a second driven sprocket and a second chain, the second track 17 is provided with the second driving sprocket and the second driven sprocket, the second driving sprocket and the second driven sprocket are wound with the second chain, the output end of the second driving motor is in transmission connection with the second driving sprocket, and the second tubing trolley 19 is connected with the second chain; the controller is in signal connection with the first driving motor and the second driving motor.

[0027] When the oil pipe is lifted, initially, the first pipe moving trolley 18 and the second pipe moving trolley 19 are respectively located at the first highest point position and the second highest point position, the oil pipe 24 is lifted by the lifting clamp and the lower end of the oil pipe 24 is sleeved outside the radish head 4, the first pipe moving trolley 18 is pushed to move downward by the dead weight of the oil pipe 24, the oil pipe 24 is gradually poured and laid flat in the process of the downward movement of the first pipe moving trolley 18, the radish head 4 is pressed downward to the side close to the oil pipe clamp plate 5 in the process of the oil pipe 24 being poured and laid flat, the spacing between the radish head 4 and the oil pipe clamp plate 5 is gradually reduced, when the radish head 4 and the oil pipe clamp plate 5 just clamp the oil pipe 24 at a certain angle of inclination of the oil pipe 24, the angle of inclination of the oil pipe 24 is between 30 degrees and 35 degrees, at this time, the first pipe moving trolley 18 just moves to the first highest point position on the first track 16, then the first pipe moving trolley 18 is continuously pushed to move downward by the dead weight of the oil pipe 24, in the process of the oil pipe 24 being continuously poured and laid flat, the radish head 4 and the oil pipe clamp plate 5 always maintain the state of clamping the oil pipe 24 under the action of the elastic potential energy of the first elastic reset member 6 and the second elastic reset member 7, when the first pipe moving trolley 18 continuously moves downward through a certain sensing position on the first track 16, the first trolley driving mechanism starts to drive the first pipe moving trolley 18 to continuously move downward, the oil pipe clamp pulls the oil pipe to move together, so that the lifting clamp starts to gradually deviate from the well mouth, then the oil pipe 24 is poured to the pipe body receiving seat 20, the lifting clamp releases the upper end of the oil pipe 24, the second trolley driving mechanism starts to drive the second pipe moving trolley 19 to move downward, at this time, the oil pipe 24 is clamped by the oil pipe clamp, with the first pipe moving trolley 18 and the second pipe moving trolley 19 continuously moving downward along the first track 16 and the second track 17 respectively, the oil pipe 24 is continuously poured and laid flat, when the first pipe moving trolley 18 moves to the first lowest point position on the first track 16, the second pipe moving trolley 19 moves to the second lowest point position on the second track 17, the oil pipe 24 is taken off from the power catwalk and placed in the pipe rack.

[0028] The oil pipe clamp of the present application can clamp the oil pipe in the oil pipe lifting operation, so as to pull the oil pipe to move together, thereby reducing the labor intensity of the operation personnel and improving the operation efficiency.

[0029] The above embodiment can be further optimized or / and improved according to actual needs.

[0030] As shown in Figs. 1-6, the sleeve 3 is provided with a first restraint rod, and the rotating shaft 2 is provided with a second restraint rod. In use, the first restraint guide rail 21 and the second restraint guide rail 22 are arranged on the first track 16 between the position corresponding to the first lowest point and the position corresponding to the secondary lowest point, and a supporting platform 23 for supporting the oil pipe 24 is arranged on the front side of the first track 16; when the first pipe moving trolley 18 and the second pipe moving trolley 19 are located at the secondary lowest point and the second lowest point respectively during the oil pipe operation, the oil pipe 24 is just horizontally supported on the supporting platform 23, the first restraint rod is in sliding contact with the first restraint guide rail 21 and is pressed down under the restraint of the first restraint guide rail 21 during the movement of the first pipe moving trolley 18 from the secondary lowest point to the first lowest point, the carrot head 4 is synchronously pressed down with the first restraint rod and separated from the inner wall of the oil pipe 24, the second restraint rod is in sliding contact with the second restraint guide rail 22 and is pressed down under the restraint of the second restraint guide rail 22, and the oil pipe clamp plate 5 is synchronously pressed down with the second restraint rod and separated from the outer wall of the oil pipe 24, and when the first pipe moving trolley 18 moves to the first lowest point, the carrot head 4 is completely withdrawn from the oil pipe.

[0031] During the oil pipe lowering operation, initially, the first pipe moving trolley 18 and the second pipe moving trolley 19 are located at the first lowest point and the second lowest point respectively, the oil pipe 24 is horizontally placed on the supporting platform 23, the oil pipe body is located on the pipe body receiving seat 20, the first trolley driving mechanism is started to drive the first pipe moving trolley 18 to move from the first lowest point to the secondary lowest point, the carrot head 4 moves into the oil pipe 24, and the distance between the carrot head 4 and the oil pipe clamp plate 5 is continuously reduced, when the first pipe moving trolley 18 moves to the secondary lowest point, the carrot head 4 and the oil pipe clamp plate 5 just clamp the oil pipe, then the second trolley driving mechanism is started to drive the second pipe moving trolley 19 to move upwards, as the first pipe moving trolley 18 and the second pipe moving trolley 19 continue to move upwards along the first track 16 and the second track 17 respectively, the oil pipe is continuously lifted and the upper end is continuously inclined upwards, when the second pipe moving trolley 19 moves to the second highest point, the upper end of the oil pipe 24 is grabbed by the lifting clamp and the oil pipe 24 is lifted, the oil pipe 24 is separated from the pipe body receiving seat 20, the first trolley driving mechanism continues to drive the first pipe moving trolley 18 to move upwards, as the inclination angle of the oil pipe 24 becomes larger and larger, the carrot head 4 is continuously lifted, and the oil pipe clamp plate 5 is also continuously lifted under the driving of the second elastic return member 7, when the first pipe moving trolley 18 passes the secondary highest point, the distance between the carrot head 4 and the oil pipe clamp plate 5 becomes larger and larger, when the first pipe moving trolley 18 moves to the first highest point, the oil pipe clamp plate 5 is separated from the outer wall of the oil pipe, and the carrot head 4 and the oil pipe clamp plate 5 release the clamping action on the oil pipe 24, at this time, the oil pipe 24 can be separated from the oil pipe clamp by continuously lifting the oil pipe 24 by the lifting clamp.

[0032] As shown in FIG. 1-6, the first constraint rod comprises a first connecting rod 8 and a first roller 9, the lower end of the first connecting rod 8 is fixedly connected with the sleeve 3, and the upper end of the first connecting rod 8 rotatably installs the first roller 9; the second constraint rod comprises a second connecting rod 10 and a second roller 11, the lower end of the second connecting rod 10 is fixedly connected with the rotating shaft 2, and the upper end of the second connecting rod 10 rotatably installs the second roller 11. Through the setting of the first roller 9 and the second roller 11, it is more beneficial for the first constraint rod and the second constraint rod to slide with the first constraint guide rail 21 and the second constraint guide rail 22 respectively.

[0033] As shown in FIG. 1-6, the oil pipe clamp plate 5 is provided with a catch tooth 12 matched with the external thread of the oil pipe end on the side close to the radish head 4; the radish head 4 is provided with an anti-skid tooth 13 on the side close to the oil pipe clamp plate 5 and the side away from the oil pipe clamp plate 5. Thus, the oil pipe clamp plate 5 and the radish head 4 are more stable in clamping the oil pipe, effectively avoiding the sliding between the oil pipe and the oil pipe clamp during clamping and pulling the oil pipe.

[0034] As shown in FIG. 1-6, the lower outer side of the radish head 4 is provided with a limiting shoulder 14 capable of abutting against the oil pipe end when the radish head 4 is inserted into the oil pipe. Thus, it is prevented that the oil pipe is inserted too deep to affect the rotation of the radish head 4 close to the oil pipe clamp plate 5.

[0035] As shown in FIG. 1-6, the mounting plate 1 is provided with a limiting column 15 abutting against the radish head 4 for preventing the radish head 4 from overturning upward. It is prevented that the radish head 4 is overturned too much.

[0036] Specifically, the first elastic return member 6 is a torsion spring or a tension spring, and the second elastic return member 7 is a torsion spring or a tension spring. In this embodiment, the first elastic return member 6 and the second elastic return member 7 are both tension springs.

[0037] The above technical features constitute the best embodiment of the present application, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the needs of different situations.

Claims

1. A tubing clamp characterized by The device comprises a mounting plate, a rotating shaft, a sleeve, a radish head and a oil pipe clamp plate, the rotating shaft is arranged along the front and back direction and rotatably mounted on the mounting plate, the sleeve is rotatably sleeved on the outside of the rotating shaft, the first elastic reset member is arranged between the sleeve and the mounting plate, the second elastic reset member is arranged between the rotating shaft and the mounting plate, the radish head is arranged on the sleeve and inclined from left to right and from bottom to top, the oil pipe clamp plate is arranged on the rotating shaft and located below the radish head, the distance between the radish head and the oil pipe clamp plate is greater than the wall thickness of the oil pipe, and the radish head can be pressed down by the oil pipe to be close to the oil pipe clamp plate when the oil pipe is inserted into the radish head, so as to clamp the oil pipe with the oil pipe clamp plate.

2. The tubing clamp of claim 1, wherein The sleeve is provided with a first constraint rod, and the rotating shaft is provided with a second constraint rod.

3. The tubing clamp of claim 2, wherein The first constraint rod comprises a first connecting rod and a first roller, the lower end of the first connecting rod is fixedly connected with the sleeve, and the upper end of the first connecting rod is rotatably provided with the first roller; the second constraint rod comprises a second connecting rod and a second roller, the lower end of the second connecting rod is fixedly connected with the rotating shaft, and the upper end of the second connecting rod is rotatably provided with the second roller.

4. The tubing clamp of claim 1 or 2 or 3, wherein The side of the oil pipe clamp plate close to the radish head is provided with a tooth that is matched with the external thread of the end of the oil pipe; the side of the radish head close to the oil pipe clamp plate and the side of the radish head away from the oil pipe clamp plate are both provided with anti-skid teeth.

5. The tubing clamp of claims 1 or 2 or 3, wherein The lower side of the radish head is provided with a limiting shoulder that can abut against the end of the oil pipe when the upper part of the radish head is inserted into the oil pipe.

6. The tubing clamp of claim 4, wherein The lower side of the radish head is provided with a limiting shoulder that can abut against the end of the oil pipe when the upper part of the radish head is inserted into the oil pipe.

7. The tubing clamp of claims 1 or 2 or 3 or 6, wherein The mounting plate is provided with a limiting column that abuts against the radish head and is used for preventing the radish head from being turned upward.

8. The tubing clamp of claim 4, wherein The mounting plate is provided with a limiting column that abuts against the radish head and is used for preventing the radish head from being turned upward.

9. The tubing clamp of claims 1 or 2 or 3 or 6 or 8, wherein The first elastic reset member is a torsion spring or a tension spring, and the second elastic reset member is a torsion spring or a tension spring.

10. The tubing clamp of claim 4, wherein The first elastic reset member is a torsion spring or a tension spring, and the second elastic reset member is a torsion spring or a tension spring.

Images