Oil pipe grabbing and positioning device for integrated workover rig

Abstract

The utility model discloses an oil pipe grabbing and positioning device for an integrated workover rig, and mainly relates to the field of workover operation. Comprising a strip-shaped frame which is located on one side of a derrick and keeps a vertical state during operation, the strip-shaped frame is provided with an adapter which is in sliding fit with the strip-shaped frame in the length direction of the strip-shaped frame, the adapter is rotatably provided with a large-arm truss, and the side, away from the strip-shaped frame, of the large-arm truss is provided with a small-arm truss which is rotatably connected with the large-arm truss. The upper end and the lower end of the small arm truss are each provided with a machine arm extending horizontally, a mechanical gripper is installed at the end, away from the large arm truss, of each machine arm, the large arm truss is in rotation linkage with the small arm truss, and when the large arm truss rotates by 90 degrees, the small arm truss is in linkage with the large arm truss to rotate by 180 degrees. The utility model has the beneficial effects that the oil pipe can be moved and centered in one step, the operation is simplified, and the efficiency and the quality of workover treatment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of well repair operation, and specifically relates to a tubular grab positioning device for integrated well repair machine. BACKGROUND

[0002] In well repair operation, the tubular operation is one of the key links, and the tubular is usually accurately positioned above the wellhead. At present, the existing technology of this link mainly includes mechanical operation and automatic operation. The commonly used mechanical operation includes a tubular conveying device for conveying the tubular from the storage position to the tubular conveying device above the wellhead, and a tubular righting device for righting the tubular. Therefore, multiple devices need to be cooperated in action. Moreover, the righting device is an additional auxiliary device for reducing the swing of the tubular and accurately centering, and the device has a relatively complex structure and needs to be additionally installed, thereby increasing the operation cost and complex links and increasing the error factors. SUMMARY

[0003] The utility model aims at providing a tubular grab positioning device for integrated well repair machine, which can move and center the tubular in one step, simplify the operation, and improve the efficiency and quality of well repair operation.

[0004] In order to achieve the above-mentioned purpose, the utility model realizes the following technical scheme:

[0005] A tubular grab positioning device for integrated well repair machine, comprising a strip-shaped frame located on one side of a derrick and kept in a vertical state during operation, an adapter slidingly matched along the length direction of the strip-shaped frame is arranged on the strip-shaped frame, a large-arm truss is rotatably installed on the adapter, a small-arm truss is rotatably connected to the side of the large-arm truss away from the strip-shaped frame, machine arms horizontally extending at the upper and lower ends of the small-arm truss, respectively, a mechanical grab hand is installed at the end of the machine arm away from the large-arm truss, the large-arm truss and the small-arm truss are rotationally linked, and when the large-arm truss rotates by 90 degrees, the small-arm truss rotates by 180 degrees relative to the large-arm truss.

[0006] The strip-shaped frame is fixed with a lifting slide rail extending in the same direction, 2 or more lifting slide blocks are slidingly connected to the lifting slide rail, and the adapter is fixed on the lifting slide block.

[0007] The top end and the bottom end of the large arm truss are symmetrically fixed with horizontally extended machine plates, the inner shafts are fixed and installed on the machine plates and penetrate the machine plates from top to bottom near one end of the strip-shaped frame, the inner ends of the inner shafts are rotatably installed on the adapter, the machine plates are provided with rotating arm motors for driving the inner shafts, the inner ends of the inner shafts opposite to each other are provided with large chain wheels, the outer shafts are rotatably installed on the machine plates and penetrate the machine plates from top to bottom far away from the lifting slide rails, the opposite ends of the two outer shafts are fixed with small chain wheels, the chain is wound between the large chain wheel and the small chain wheel, and the transmission ratio between the large chain wheel and the small chain wheel is 1:2.

[0008] The side of the adapter is rotatably installed with a walking gear driven based on a stepping motor, the strip-shaped frame is installed with a walking rack in the same direction and engaged with the walking gear, so that the driving of the large arm truss lifting is realized.

[0009] The upper slide rail and the lower slide rail are horizontally fixed and installed on the same side of the derrick, the upper slide rail is slidably connected with an upper sliding block, the upper sliding block is fixed with a rotating shaft, the lower slide rail is slidably connected with a lower sliding block, and the lower sliding block is fixed with a pin shaft, the top end of the strip-shaped frame is provided with a shaft hole rotatably connected with the rotating shaft, and the bottom end of the strip-shaped frame is provided with a strip-shaped hole penetrated by the pin shaft and matched with a slot of the pin shaft.

[0010] The upper sliding block is rotatably installed with an upper gear, the upper slide rail is fixed with an upper rack arranged in parallel with the upper slide rail, the upper sliding block is further fixed with an upper motor for driving the upper gear, and the upper gear is engaged with the upper rack.

[0011] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0012] The device has the advantages of simple structure and practicality, stable conveying and accurate positioning of the oil pipe based on the linkage of the mechanism, no need for cooperation of multiple devices, no need for manual participation, and meeting the requirements of field application in safety, stability and continuous working capacity. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the action principle of the utility model (the dashed line part is a simulation derrick).

[0014] Figure 2 is a schematic diagram of the utility model in the grabbing stroke position.

[0015] Figure 3 is a schematic diagram of the utility model in the positioning stroke position.

[0016] Figure 4Is the component split schematic diagram of the utility model.

[0017] Figure 5 Is the utility model car collection state plan view (the dotted line part is analog derrick).

[0018] Figure 6 Is the utility model car collection state schematic diagram (the dotted line part is analog derrick).

[0019] Figure 7 Is the utility model in the side schematic diagram of the state of the grabbing operation (the dotted line part is analog derrick).

[0020] Figure 8 Is the utility model in the side schematic diagram of the state of the positioning operation (the dotted line part is analog derrick).

[0021] The reference signs shown in the drawings are as follows:

[0022] 1, strip frame;2, upper slide rail;3, upper slide block;4, pivot;5, lower slide rail;6, lower slide block;7, pin shaft;8, strip hole;9, lifting slide rail;10, adapter;11, large arm truss;12, machine plate;13, inner shaft;14, large sprocket;15, outer shaft;16, small sprocket;17, chain;18, small arm truss;19, machine arm;20, mechanical gripper. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the present application.

[0024] Embodiment:

[0025] The device can realize the conveying and centering of the oil pipe in one step, so that the speed and accuracy are improved.

[0026] Since the device is integrated on the derrick for use, in order to further introduce the specific structure of the example, the direction of the derrick is defined as follows:

[0027] The side of the derrick close to the wellhead is the front side, the side of the derrick close to the vehicle body is the rear side, and the remaining two sides of the derrick are the left and right sides.

[0028] The grabbing and positioning device of the example mainly includes a strip frame 1 that maintains a vertical ground state during operation. In the drawings of the example, the strip frame 1 is installed on the right side of the derrick.

[0029] Further comprising the upper slide rail 2 and the lower slide rail 5 fixedly installed on the same side of the derrick, the upper slide rail 2 and the lower slide rail 5 are horizontally installed and fixed,

[0030] The upper slide rail 2 is slidably connected with an upper sliding block 3, and the upper sliding block 3 is fixedly connected with a rotating shaft 4,

[0031] The lower slide rail 5 is slidably connected with a lower sliding block 6, and the lower sliding block 6 is fixedly connected with a pin shaft 7;

[0032] The top end of the strip-shaped frame 1 is provided with a shaft hole rotatably connected with the rotating shaft 4, and the bottom end of the strip-shaped frame 1 is provided with a strip-shaped hole 8 penetrated by the pin shaft 7 and matched with the slot of the pin shaft 7. Based on the fact that the upper sliding block 3 and the lower sliding block 6 are independently slid, and through the relevant matching relationship between the upper and lower strip-shaped frames 1, the strip-shaped frame 1 can keep a certain angle with the derrick in the working state of the inclined derrick, so as to obtain the working state of the strip-shaped frame 1 perpendicular to the ground.

[0033] Based on the fact that the derrick has strict accuracy requirements on the position and angle after being unfolded after being fixed on the workover truck, it is necessary to ensure that the headstock, the travelling block and the wellhead of the derrick are on the same vertical line. Generally, the left-right deviation should not exceed 30mm, and the front-rear deviation should be within the range of 50-100mm. Therefore, based on the accuracy positioning of the derrick, the mechanism loaded on the derrick can further realize the working state of the strip-shaped frame 1 being vertical.

[0034] In terms of power, the example provides an implementation manner:

[0035] That is, the upper sliding block 3 is rotatably installed with an upper gear, the upper side of the upper slide rail 2 is fixedly provided with an upper gear rack arranged in parallel therewith, and the upper sliding block 3 is further fixedly provided with an upper motor for driving the upper gear, and the upper gear is engaged with the upper gear rack. The lower sliding block 6 is rotatably installed with a lower gear, the upper side of the lower slide rail 5 is fixedly provided with a lower gear rack arranged in parallel therewith, and the lower sliding block 6 is further fixedly provided with a lower motor for driving the lower gear, and the lower gear is engaged with the lower gear rack. Through the driving of the respective motors, the respective positions are moved and positioned, and finally the strip-shaped frame 1 keeps vertical in the inclined operation of the derrick.

[0036] In addition, a gyroscope can be installed on the strip-shaped frame 1 for feeding back the posture of the strip-shaped frame 1, so as to adjust the positions of the upper sliding block 3 and the lower sliding block 6. The sliding distance and the final position of the upper sliding block 3 and the lower sliding block 6 can also be set in advance according to the inclination angle of the derrick, so as to obtain the vertical posture of the strip-shaped frame 1.

[0037] Not limited to the example, power driving can also be realized by an oil cylinder or an air cylinder, for example, an oil cylinder or an air cylinder is independently arranged below the upper slide rail 2 and above the lower slide rail 5, and the driving is realized through the connection of the cylinder rod with the upper sliding block 3 and the lower sliding block 6.

[0038] The bar-shaped frame 1 is provided with a large arm truss 11 which is slidingly fitted along the length direction thereof, and the specific structure is that a lifting slide rail 9 which extends in the same direction as the bar-shaped frame 1 is fixed on the bar-shaped frame 1, and two or more lifting slide blocks are slidingly connected on the lifting slide rail 9. A conversion piece 10 is fixed on the lifting slide blocks, and the conversion piece 10 adopts an angle iron structure, so as to facilitate the conversion and bearing in two vertical planes.

[0039] One side of the conversion piece 10 is rotatably provided with a walking gear which is driven based on a stepping motor, and the bar-shaped frame 1 is provided with a walking rack which is engaged with the walking gear and extends in the same direction, so as to realize the driving of the lifting of the large arm truss 11.

[0040] The large arm truss 11 adopts a truss structure which is welded by metal, and the top end and the bottom end of the large arm truss 11 are respectively and symmetrically fixed with machine plates 12. The machine plates 12 are fixedly provided with inner shafts 13 which are penetrated from top to bottom at one end close to the lifting slide rail 9. The machine plates 12 are provided with a swing arm motor which drives the inner shafts 13. Large chain wheels 14 are installed at the opposite inner ends of the inner shafts 13. The inner shafts 13 are rotatably connected on the conversion piece 10, so as to realize the lifting and left and right swinging of the whole large arm truss 11 relative to the bar-shaped frame 1.

[0041] The machine plates 12 are rotatably provided with outer shafts 15 which are penetrated from top to bottom at one end away from the lifting slide rail 9. Small chain wheels 16 are fixed at the opposite ends of the two outer shafts 15. A chain 17 is wound between the large chain wheels 14 and the small chain wheels 16, and the transmission ratio between the large chain wheels 14 and the small chain wheels 16 is 1:2.

[0042] A small arm truss 18 is rotatably connected at the side of the large arm truss 11 away from the bar-shaped frame 1. Machine arms 19 are respectively provided at the upper end and the lower end of the small arm truss 18. Mechanical grippers 20 are installed at one end of the machine arms 19 away from the large arm truss 11. The mechanical grippers 20 adopt the common connecting mechanical hand structure in the prior art, and have mechanical claws for gripping and opening. The mechanical claws are used for gripping the lifted oil pipes.

[0043] The side of the machine arms 19 close to the large arm truss 11 is fixed opposite to the outer shafts 15 of the large arm truss 11, so as to be driven to swing based on the rotation of the outer shafts 15. Based on the transmission ratio of 1:2 between the large chain wheels 14 and the small chain wheels 16, when the large arm truss 11 swings 90 degrees, the small arm truss 18 has a linkage swinging action of swinging 180 degrees relative to the large truss. Based on the linkage swinging of the large arm truss 11 and the small arm truss 18, the large arm truss 11 and the small arm truss 18 have the following two stroke positions:

[0044] The big arm truss 11 is vertically located on the side of the derrick where the strip frame 1 is installed and is perpendicular to the side, and the small arm truss 18 is perpendicular to the big arm truss 11 and extends to the direction of the mast column;

[0045] The big arm truss 11 is vertically located on the side of the derrick where the strip frame 1 is installed and is parallel to the side, and the small arm truss 18 is perpendicular to the big arm truss 11 and reverses the vertical direction of the grabbing stroke position, at this time the manipulator is located above the well mouth in the center of the front side of the derrick.

[0046] When the big arm truss 11 swings from the grabbing stroke position to the positioning stroke position, it is rotated by 90 degrees from the vertical side of the derrick to the side of the derrick, and the small arm truss 18 is rotated by 180 degrees relative to the big arm, realizing reverse vertical with the big arm truss 11.

[0047] Under the linkage swing described above, one-step positioning from grabbing to well mouth is realized, and the functions of pipe transfer and positioning are completed, without the cooperation of multiple devices and without complex program setting, but only through the transmission ratio set accurately, the mechanical positioning is completed. Each position can match the well mouth, which is efficient and practical.

[0048] In addition, when the work is finished, the upper slider 3 and the lower slider 6 are both slid to Figure 2 The leftmost position, and the big arm truss 11 swings to the right side of the derrick, and the small arm truss 18 swings to the front side of the derrick, as shown in Figure 5 、 6 , the parking state can be completed. When the derrick is folded to lie on the top of the workover truck, the device attached to the derrick follows the movement, which can conveniently park and transfer, so that additional installation and removal equipment is not needed in the preparation links of work and parking, which is very convenient.

[0049] The device has simple and practical structure, and realizes stable transportation and accurate positioning of the pipe based on the linkage of the machine, without the cooperation of multiple devices and without direct participation of manual work, and the safety, stability and continuous working capacity of the device meet the requirements of field application.

Claims

1. A tubing grab positioning device for an integrated workover rig, comprising: The utility model provides a kind of well rig, including the strip-shaped frame located on the side of derrick and kept vertical state when operating, the adapter piece of sliding fit along its length direction is equipped on the strip-shaped frame, the large arm truss of rotatable installation is equipped on the adapter piece, the small arm truss of rotatable connection is equipped on the side of large arm truss away from strip-shaped frame, the machine arm of horizontal extension is respectively equipped on the upper and lower ends of small arm truss, the mechanical gripper of installation is equipped on the end of machine arm away from large arm truss, the rotation of large arm truss and small arm truss is linked, and when large arm truss rotates 90 degrees, linkage small arm truss rotates 180 degrees relative to large truss.

2. The tubing pickup and positioning device for an integrated workover rig of claim 1, wherein, The lifting slide rail of same direction extension is fixed on the strip-shaped frame, and the two or more lifting sliding blocks of sliding connection are connected on the lifting slide rail.

3. The tubing pickup and positioning device for an integrated workover rig of claim 2, wherein, The machine plate of horizontal extension is respectively fixed on the top end and bottom end of large arm truss, the inner shaft of fixed installation is penetrated and fixed on the end of machine plate close to strip-shaped frame, the inner end of inner shaft is rotatably installed on adapter piece, the rotating arm motor of driving inner shaft is equipped on machine plate, the large sprocket of installation is equipped on the opposite inner end of inner shaft, the outer shaft of rotatably installed is penetrated and fixed on the end of machine plate away from lifting slide rail, the small sprocket of fixed installation is equipped on the opposite end of two outer shafts, the chain of winding is equipped between large sprocket and small sprocket, and the transmission ratio between large sprocket and small sprocket is 1:

2.

4. The tubing pickup and positioning device for an integrated workover rig of claim 2, wherein, The walking gear of driving based on step motor is rotatably installed on the side of adapter piece, the walking rack of meshing with walking gear is installed on the same direction of strip-shaped frame, to realize the drive of large arm truss lifting.

5. The tubing grabber positioning device for integrated workover rig of claim 1, wherein, The upper slide rail and lower slide rail of fixed installation are installed on the same side of derrick, the upper slide rail and lower slide rail are horizontally installed and fixed, the upper sliding block of sliding connection is connected on the upper slide rail, the rotating shaft of fixed installation is equipped on the upper sliding block, the lower sliding block of sliding connection is connected on the lower slide rail, and the pin shaft of fixed installation is equipped on the lower sliding block;The shaft hole of rotatably connected with rotating shaft is equipped on the top end of strip-shaped frame, and the strip-shaped hole of being penetrated by pin shaft and matched with pin shaft notch is equipped on the bottom end of strip-shaped frame.

6. The tubing grabber positioning device for integrated workover rig of claim 5, wherein, The upper gear of rotatably installed is equipped on the upper sliding block, the upper rack of parallel arrangement is fixed above the upper slide rail, the upper motor of driving upper gear is further fixed on the upper sliding block, and the upper gear is engaged with upper rack;The lower gear of rotatably installed is equipped on the lower sliding block, the lower rack of parallel arrangement is fixed above the lower slide rail, the lower motor of driving lower gear is further fixed on the lower sliding block, and the lower gear is engaged with lower rack.

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