CN115492539B - Simple type back-up wrench for well repairing top drive - Google Patents
Simple type back-up wrench for well repairing top drive Download PDFInfo
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- CN115492539B CN115492539B CN202211433119.9A CN202211433119A CN115492539B CN 115492539 B CN115492539 B CN 115492539B CN 202211433119 A CN202211433119 A CN 202211433119A CN 115492539 B CN115492539 B CN 115492539B
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- 230000007246 mechanism Effects 0.000 claims description 29
- 230000008602 contraction Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 14
- 230000007935 neutral effect Effects 0.000 description 10
- 239000003921 oil Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
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- Manipulator (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a simple workover top drive back-up wrench, which comprises a power tap; the swinging device is arranged at the upper end of the power tap and can drive the power tap to swing; the adjusting device is arranged at the lower end of the power tap and can swing relative to the power tap; the clamping device is arranged at the lower end of the adjusting device and can clamp or release the pipe column; and the control device is used for controlling the swing of the swing device, the swing of the adjusting device and the clamping and releasing of the clamping device. The swing device is used for realizing the swing of the power tap in a vertical plane, so that the power tap is suitable for being in butt joint with a pipe column under an inclined angle. The pipe column is clamped or loosened through the special adjusting device and the clamping device, so that the reactive torque for loading and unloading is shared, and the butt joint structural strength of the power tap and the pipe column is enhanced. Remote control is realized through the control device, and the method is scientific and reasonable.
Description
Technical Field
The invention relates to the technical field of oil well maintenance, in particular to a simple type workover top drive back-up wrench.
Background
Well repair is an important and special operation in petroleum exploitation, and has various contents and different difficulty and easiness. The crust movement can deform the crude oil producing well, and if the crude oil producing well is not maintained in time, the oil production efficiency is reduced or cannot be carried out. When the well is repaired, the well is needed to be repaired by matching with a power tap.
The power tap is a device which is arranged on the derrick of the workover rig and is used for providing rotary power. The drilling tool is not only used for maintenance operations such as casing milling, drilling a cement plug, a bridge plug, salvaging and the like, but also used for drilling operations such as side drilling, open hole drilling, coring and the like.
However, the conventional well repairing power faucet only has the function of realizing the rotation of the pipe tool, is inconvenient to operate and poor in effect when meeting the condition that the pipe tool is connected at an inclination angle, and can also cause potential safety hazards in well repairing operation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a simple type well repairing top drive back-up wrench which solves one or more problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a simple back-up wrench for repairing well top drive comprises
A power tap;
the swinging device is arranged at the upper end of the power tap and can drive the power tap to swing;
the adjusting device is arranged at the lower end of the power tap and can swing relative to the power tap;
the clamping device is arranged at the lower end of the adjusting device and can clamp or release the pipe column;
and the control device is used for controlling the swing of the swing device, the swing of the adjusting device and the clamping and releasing of the clamping device.
Further, the adjusting device comprises
The connecting seat is arranged at the lower end of the power tap and is hinged with the upper end of the clamping device;
one end of the adjusting hydraulic cylinder is hinged with the end part of the connecting seat, and the other end of the adjusting hydraulic cylinder is hinged with the upper part of the clamping device;
and the stretching and retracting of the adjusting hydraulic cylinder drives the clamping device to swing.
Further, the clamping device comprises
A clamp body hinged to the adjustment device;
the clamping clamp body is arranged at the lower part of the clamping main body and can clamp or loosen the pipe column.
Further, the clamping forceps body comprises
The top end and the upper part of the clamp frame are respectively hinged with the adjusting device;
the suspension bracket is arranged at the lower part of the clamp frame;
the clamp body is arranged on the suspension bracket through a fixed shaft and is provided with a back-up clamp hydraulic cylinder;
the elastic mechanism is sleeved outside the fixed shaft and is connected with the clamp body and the fixed shaft;
a guide rail passing through the clamp body;
the pliers body and the back pliers hydraulic cylinder float along the fixed shaft and the guide rail through the elastic mechanism.
Further, the upper end of the suspension bracket is provided with a flange with lugs;
an adjusting screw rod is arranged on the lug flange in a penetrating mode, and the upper end of the adjusting screw rod is arranged on the clamp frame in a lifting mode.
Further, one end of the forceps body, which is opposite to the forceps mouth, is provided with a limiting block,
the back-up wrench is characterized in that symmetrical pin shafts are arranged at two opposite ends of the back-up wrench, which are adjacent to the jaw, of the back-up wrench, symmetrical tooth plates are arranged at two opposite ends of the wrench body, which are adjacent to the jaw, and the tooth plates are connected with the pin shafts through tooth plate seats;
the back-up tong hydraulic cylinder can drive the two dental plates to approach or depart.
Further, the power tap is fixedly provided with a lifting ring pin, and the lifting ring pin penetrates out of the power tap;
the swinging device comprises
A swing main body, the inside of which is provided with a swing mechanism;
the upper end of the lifting ring is fixed, and the lower end of the lifting ring is rotationally connected with the lifting ring pin;
the swing mechanism is connected with the power tap and the lifting ring;
and the swing mechanism stretches and contracts to drive the power tap to swing.
Further, the swing mechanism comprises
The fixed support is fixedly connected with the lifting ring;
the buffer seat is rotationally connected with the fixed support;
the connecting lug plate is penetrated through the lifting ring pin and can rotate to be fixedly connected with the power tap;
the swinging hydraulic cylinder is connected with the connecting lug plate and the buffer seat;
and the expansion and contraction of the swinging hydraulic cylinder drives the power faucet to swing.
Further, the control device comprises an operating system and a control system.
Further, the operating system comprises a back-up wrench operating end and a faucet control end,
the control system connected with the oil inlet comprises a pressurizing valve, a needle valve, a sequence valve, a core inserting valve and a flow dividing and collecting valve, and forms a complete hydraulic loop with the back-up wrench hydraulic cylinder, the swing hydraulic cylinder and the adjusting hydraulic cylinder;
the back-up wrench operation end is respectively connected to the back-up wrench hydraulic cylinder and the adjusting hydraulic cylinder and is controlled;
the faucet control end is connected to the swing hydraulic cylinder and controls.
In summary, the invention has the following beneficial effects:
the swing device is used for realizing the swing of the power tap in a vertical plane, so that the power tap is suitable for being butted with a pipe column under an inclined angle. The pipe column is clamped or loosened through the special adjusting device and the clamping device, so that the reactive torque for loading and unloading is shared, and the butt joint structural strength of the power tap and the pipe column is enhanced. Remote control is realized through the control device, and the method is scientific and reasonable.
Drawings
FIG. 1 is a front view block diagram of the present invention;
FIG. 2 is a side elevational structural view of the present invention;
FIG. 3 is a front cross-sectional view of the adjustment device and clamping device of the present invention;
FIG. 4 is a diagram illustrating the swing of the adjusting device according to the present invention;
FIG. 5 is a schematic view of the hydraulic cylinder mounting structure of the pliers body and the back-up pliers of the present invention;
FIG. 6 is a schematic view of a clamp body and clamp frame mounting structure in accordance with the present invention;
FIG. 7 is a cross-sectional view of the body and frame mounting structure of the present invention;
FIG. 8 is a cross-sectional view of the structure of the hydraulic cylinder of the pliers body and the back pliers of the invention;
fig. 9 is a schematic diagram of a control device according to the present invention.
In the figure:
1. a power tap; 2. a swinging device; 3. a clamping device; 4. a tubular column; 11. a connecting seat; 12. a first pin; 13. adjusting a hydraulic cylinder; 14. a second pin; 15. a third pin; 16. a fixing bolt; 17. a fixed support; 18. a fourth pin; 19. connecting an ear plate; 20. a buffer seat; 21. adjusting a screw; 22. a nut; 23. a clamp frame; 24. a hanging frame; 25. a fixed shaft; 26. a clamp body; 27. back-up wrench hydraulic cylinder; 28. a guide rail; 29. an elastic mechanism; 30. a flange with lugs; 31. a dental plate; 32. a limiting block; 33. a dental plate seat; 41. a lifting ring; 42. a lifting ring pin; 43. and (5) swinging the hydraulic cylinder.
Detailed Description
Examples:
the invention is described in further detail below with reference to fig. 1-9.
A simple type well repairing top drive back-up wrench is provided, wherein a main body is a power tap 1. The upper end of the power tap 1 is provided with a swinging device 2. The swinging device 2 can drive the whole power tap 1 to swing along a vertical plane. The lower end of the power tap 1 is provided with an adjusting device, and the lower part of the adjusting device is provided with a clamping device 3. The adjusting device can drive the clamping device 3 to swing in a vertical plane relative to the power tap 1. The gripping device 3 may grip or release the target tubular string 4.
Wherein, the main part of power tap 1 is equipped with and carries the ring round pin 42, carries the ring round pin 42 to wear out power tap 1, carries the both ends of ring round pin 42 to be equipped with the protection device, and the protection device has elastic buffer section for the collision of protection power tap 1 and wall of a well. Preferably, the lifting ring pin 42 is divided into two sections, and symmetrically penetrates through two ends of the main body part of the power tap 1. The lifting ring pin 42 is fixedly connected with the power tap 1.
The swinging device 2 includes a swinging body provided with a swinging mechanism inside and a bail 41. The lifting ring 41 is of an inverted Y-shaped structure, the end part of the lower half part is a vertical member, and the whole lifting ring 41 is bilaterally symmetrical. The upper end of the lifting ring 41 is fixed. Both ends of the lower half of the bail 41 are rotatably provided on bail pins 42 on both sides, respectively. The lifting ring 41 is symmetrically arranged around the power tap 1 as a whole. The swing main body is internally provided with a swing mechanism. The swing mechanism connects the bail 41 and the power tap 1.
Specifically, the swing mechanism includes a fixed support 17, a buffer seat 20, a connection lug plate 19, and a swing cylinder 43. The connecting lug plate 19 is fixedly arranged on the lifting ring pin 42 in a penetrating way, namely, the connecting lug plate 19 is fixedly connected with the power tap 1 through the lifting ring pin 42, and the connecting lug plate 19, the lifting ring pin 42 and the power tap 1 are relatively static and can be regarded as a whole. The fixed support 17 is fixedly connected with the lifting ring 41. The swing hydraulic cylinder 43 is arranged in the swing body, one end of the swing hydraulic cylinder 43 is provided with a buffer seat 20, and the buffer seat 20 is rotationally connected with the fixed support 17 through a short rotating shaft. The buffer seat is internally provided with a buffer component, generally an elastic mechanism and the like. The other end of the swinging hydraulic cylinder 43 is hinged with the connecting lug plate 19 through a fourth pin shaft 18. The extension and retraction of the swing cylinder 43 causes the power tap 1 to swing in a vertical plane about the neutral line of the bail pin 42.
The adjusting device comprises a connecting seat 11 and an adjusting hydraulic cylinder 13. The connecting seat 11 is connected to the bottom end of the power tap 1 by a fixing bolt 16. The end side of the connecting seat 11 is provided with an ear plate, and an upper slotted hole and a lower slotted hole are arranged at different positions on the same circumference of the ear plate. One end of the adjusting hydraulic cylinder 13 is hinged with the lower slotted hole through a second pin shaft 14, and the other end of the adjusting hydraulic cylinder is hinged with the clamping device 3 through a third pin shaft 15. Preferably, two opposite sides of the connecting seat 11 are respectively provided with one adjusting hydraulic cylinder 13, the two adjusting hydraulic cylinders 13 are symmetrically arranged relative to the power tap 1, and the two adjusting hydraulic cylinders 13 synchronously run, so that the burden is reduced, and the stability is enhanced. The upper end of the clamping device 3 is also hinged with the upper slotted hole through a first pin shaft 12. The expansion and contraction of the adjusting hydraulic cylinder 13 drives the neutral line of the slotted hole above the clamping device 3 to swing in a vertical plane as an axis.
The clamping device 3 comprises a clamping body and a clamping jaw 26. The upper end of the clamping main body is hinged with an upper slotted hole of the connecting seat 11 through a first pin shaft 12. The lower end of the adjusting cylinder 13 is also hinged with the upper end of the clamping body by a third pin 15. The clamping pincer body 26 is provided at a lower portion of the clamping body to clamp or unclamp the target string 4.
Specifically, the clamping jaw 26 includes a jaw frame 23, a hanger frame 24, a jaw 26, an elastic mechanism 29, and a rail 28. The upper end of the clamp frame 23 is hinged with the connecting seat 11 through a first pin shaft 12 and an upper slotted hole, and is also hinged with the adjusting hydraulic cylinder 13 through a third pin shaft 15 and a lower slotted hole. The inner side of the lower part of the clamp frame 23 is provided with a hanging frame 24. The pincer body 26 is mounted on the hanger 24 by two symmetrical fixed shafts 25. The fixed shaft 25 passes through the pliers body 26 and the hanging frame 24 at the same time, and the fixed shaft 25 and the hanging frame 24 are fixed. The clamp body 26 is provided with a matched back-up clamp hydraulic cylinder 27. The fixed shaft 25 is sleeved with an elastic mechanism 29, and the elastic mechanism 29 is respectively connected with the clamp body 26 and the fixed shaft 25. The elastic mechanism 29 is used for enabling the clamp body 26 to be in a floating state relative to the hanging frame 24 so as to meet the axial deflection change of the drilling tool when the drilling tool is disassembled from the drilling tool screw thread, and therefore the clamp body 26 is hung on the hanging frame 24 with the fixed shaft 25 through the elastic mechanism 29. The left side and the right side of the clamp body 26 are respectively provided with a guide rail 28, and the guide rails 28 are positioned on the inner side of the clamp frame 23. The guide rail 28 has the function of enabling the clamp body 26 to only move in the vertical direction in the moving process, and has the functions of limiting and guiding, so that the floating of the clamp body 26 can be stably and safely realized, and the clamp body 26 is always in a floating state. When the drilling tool is fastened and screwed with the screw threads, the clamp body 26 automatically moves upwards; when the drill is tripped and the screw threads are unscrewed, the pliers body 26 automatically move downwards. Because the position of the clamp body 26 when clamping the tool is unchanged relative to the tool when making up and breaking out, the clamp body 26 must float in order to make up and breaking out. The elastic mechanism 29 does not simply refer to a spring one by one, but refers to a series of mutually matched components including springs capable of enabling the clamp body 26 to realize a floating function, and the elastic mechanism 29 can realize short floating displacement of the clamp body 26 and can automatically reset after the external force is removed, so that the clamp body 26 is floated. The clamp body 26 and the back-up clamp hydraulic cylinder 27 can slide up and down along the fixed shaft 25 and the guide rail 28, and are limited by the elastic mechanism 29, so that the up-and-down floating of the clamp body 26 and the back-up clamp hydraulic cylinder 27 is finally realized. So that the jaw body 26 is in a floating state within the jaw frame 23.
The upper end of the hanger 24 is provided with a lug flange 30. The lug flange 30 is provided with an adjusting screw rod 21 in a penetrating way, the upper end of the adjusting screw rod 21 is arranged on the clamp frame 23 in a penetrating way, and the adjusting screw rod 21 is connected with the hanging frame 24 and the components on the hanging frame 24 in an integrally lifting and descending way. The top end of the adjusting screw 21 is threaded, and the adjusting screw 21 is fixed relative to the jaw 23 by a nut 22. The position of the adjusting screw 21 is adjustable.
The end of the clamp body 26, which is opposite to the jaw, is provided with a limiting block 32, and one surface of the limiting block 32 opposite to the jaw is an arc surface. The back-up tong hydraulic cylinder 27 is provided with symmetrical tooth plates 31 adjacent to the jaws and at opposite ends, the tooth surfaces being arranged opposite. The back-up wrench hydraulic cylinder 27 is provided with symmetrical pin shafts adjacent to the jaw and at opposite ends. The dental plate 31 and the pin shaft are connected through the dental plate seat 33, namely the pin shaft is arranged on the dental plate seat 33 in a penetrating way, and the dental plate seat 33 is connected with the dental plate 31. Finally, the back-up tong hydraulic cylinder 27 can drive the dental plate 31 to approach or depart through the dental plate seat 33 and the pin shaft.
The whole top drive back-up wrench is also provided with a special control device. The control device can control the swinging of the swinging device 2, the swinging of the adjusting device and the clamping of the clamping device 3.
The control device comprises an operating system and a control system. The operating system mainly realizes remote control of equipment and is divided into a faucet control end and a back-up wrench operating end.
The back-up tong control ends are respectively connected to the adjusting hydraulic cylinder 13 and the back-up tong hydraulic cylinder 27, the swing of the clamping mechanism is realized through the control of the adjusting hydraulic cylinder 13, and the clamping and releasing of the clamping mechanism are realized through the control of the back-up tong hydraulic cylinder 27.
The faucet control end is connected to the swing hydraulic cylinder 43, and the swing of the power faucet 1 is realized through the control of the swing hydraulic cylinder 43.
In one embodiment, the starting end of the control system is provided with an oil inlet and is connected to two different operation valves, wherein one operation valve is divided into two loops, and one loop is sequentially connected to a needle valve, a sequence valve and a core insertion valve, is connected to the adjusting hydraulic cylinder 13 and returns to the operation valve; the other loop is in turn connected to a back-up hydraulic cylinder 27, which in turn is in turn connected to a flow dividing and collecting valve, a spool valve, a sequence valve, a needle valve, and back to the operating valve. The other operating valve is in turn connected to the cartridge valve, the swing cylinder 43, the spool valve, and back to the operating valve. The oscillating hydraulic cylinder 43 controls the throttle of the cartridge valve via a frequency converter. The control system is provided with a special pressure detection gauge. The operating system is provided with a special operating valve and is matched with control. The control system is used for realizing normal hydraulic pipelines of the three hydraulic cylinders and basic functions, the connection mode and the components are not unique and are not limited, and conventional replacement or reasonable change can be realized.
The swing action of the power tap 1 is realized by means of the oil input into the rod cavity or the rodless cavity of the swing hydraulic cylinder 43, and the swing action is single-cylinder operation, and the structure is clear and is not repeated. The action of the power tap 1 for outputting the rotation torque is realized by entering the power tap 1 by means of oil pressure, which relates to the structural principle of the power tap 1, belongs to the prior art, is not the focus of the invention of the application, and is not repeated.
The back-up clamp action is completed by the adjusting hydraulic cylinder 13 and the back-up clamp hydraulic cylinder 27. The two groups of hydraulic cylinders in the part realize sequential actions through 1 operation valve, and realize clamping and swinging actions through two sequence valves.
As shown in fig. 9, specifically, oil enters from an outlet pipeline A1 of the operation valve, firstly enters into a rod cavity of the back-up wrench hydraulic cylinder 27, and the drilling tool is loosened; when a certain pressure is reached, a sequence valve (SCCA-LAN) at the left side of the back-up wrench pipeline part is opened, and pressure oil enters a rodless cavity of the adjusting hydraulic cylinder 13, so that the back-up wrench part is integrally swung away from the drilling tool, and the swinging-out action is completed;
oil pressure enters from an oil port pipeline B1 of the operation valve, and enters a rod cavity of the adjusting hydraulic cylinder 13, so that the back-up wrench part is wholly swung to be close to the drilling tool, and the swing-in action is completed; when a certain pressure is reached, a sequence valve (SCCA-LAN) on the right side of the back-up clamp pipeline part is opened, oil enters a rodless cavity of a back-up clamp hydraulic cylinder 27, and a drilling tool is clamped; it should be noted that the rotational torque of the threaded screw of the loading and unloading drilling tool is from the body of the power tap 1.
Working principle: the extension and retraction of the swing cylinder 43 is controlled remotely through the faucet control end. The swing cylinder 43 is normally in a state of being extended to a certain extent so that the power tap 1 is kept vertically coaxial with respect to the pipe string 4. At this time, the floating function of the swing cylinder 43 is turned on, and the power faucet 1 is in a free swing state. The floating function is closed, and one end of the swing cylinder 43 is hinged with a connecting lug, and the other end is hinged with the lifting ring 41 by further expansion and contraction. The lifting ring 41 is fixed as a whole, and the connecting lugs, the lifting ring pins 42 and the power tap 1 are relatively fixed. Therefore, three rotation points are formed at the fourth pin shaft 18, between the lifting ring pin 42 and the lifting ring 41 and between the buffer seat 20 and the fixed support 17, and the whole power tap 1 rotates along the neutral line of the lifting ring pin 42, more precisely along the neutral line of the hole groove at the lower end of the lifting ring 41 by the expansion and contraction of the swinging hydraulic cylinder 43, and the neutral line of the hole groove at the lower end of the lifting ring 41 is overlapped with the neutral line of the lifting ring pin 42, so that the power tap 1 can be regarded as rotating along the neutral line of the lifting ring pin 42. The lifting ring 41 is kept fixed, and at the moment, the power tap 1 forms a deflection angle with the lifting ring 41, so that the swing of the power tap 1 is realized.
Preferably, the initial state of the swing cylinder 43 is set to the retracted state, at which time the power tap 1 is ensured to be in a vertically coaxial state with the pipe string 4, i.e., the power tap 1 is in a vertically operating position. The floating function of the swing cylinder 43 is turned on, and the power tap 1 is in a free swing state. When the operation is needed, the floating function is closed, the swing hydraulic cylinder 43 extends out to push the power tap 1 to swing along the lifting ring pin 42 in a rotating way, and after the power tap 1 is aligned to the pipe column 4, the inclined state of the power tap 1 is braked and locked, the operation of connecting and disconnecting the pipe column 4 is started, and the inclination and the braking of the power tap 1 at any angle in a vertical plane are realized.
The adjusting screw 21 can be adjusted up and down relative to the clamp frame 23, and the fixing relative to the clamp frame 23 is realized through the screwing of the nut 22, so that the power tap 1 and related components can be lifted or lowered. Thereby adjusting the positions of the clamp body 26 and the pipe column 4.
One end of the adjusting hydraulic cylinder 13 is hinged with the connecting seat 11, and the other end is hinged with the clamp frame 23. The connecting seat 11 is fixed relative to the power tap 1, so that the clamp frame 23 can deviate relative to the power tap 1 by adjusting the extension and retraction of the hydraulic cylinder 13. The clamp frame 23 is hinged with the slot hole on the connecting seat 11, so that the clamp frame 23 rotates by taking the neutral line of the slot hole on the connecting seat 11 as an axis on the premise that the clamp frame 23 is displaced. The jaw 23 is moved away from the pipe string 4 as a withdrawal movement, and the jaw 23 is moved closer to the pipe string 4 as a swing-in movement.
After the clamp body 26 is swung into a certain position, the limiting block 32 is tightly attached to the pipe column 4, and the back-up clamp hydraulic cylinder 27 drives the dental lamina seat 33 to do linear motion, so that dental lamina 31 arranged on the dental lamina seat 33 on two sides are mutually close to each other, and the outer wall of the pipe column 4 is clamped to realize butt joint. The pipe string 4 is screwed or unscrewed by rotation of the power tap 1. At the same time, the clamp body 26 is free to float up and down along the guide rail 28 when screwed or unscrewed. After the related actions are completed, the back-up hydraulic cylinder 27 controls the dental plate 31 to be far away, and the jaw 23 is withdrawn.
When in use, the power tap 1 is inclined by a certain angle through the swinging device 2 and the adjusting device according to actual conditions, so as to align the pipe column 4 and keep the power tap 1 in a floating state relative to the pipe column 4. The pipe string 4 is butted by a clamping mechanism. The power tap 1 drives the pipe column 4 to rotate and output torque, so that the pipe column 4 is disassembled and assembled. The clamping device 3 clamps the pipe column 4, so that the power tap 1 and the pipe column 4 can be quickly assembled and disassembled, and the reactive torque during output is born.
The swinging device 2 and the adjusting device do swinging motion, but the swinging main body of the swinging device 2 is a power tap 1, and the whole power tap 1 is driven to rotate along the neutral line of the lifting ring pin 42 relative to the fixed lifting ring 41 through the expansion and contraction of the swinging hydraulic cylinder 43, so that the power tap 1 body is inclined, and an included angle is formed relative to the vertical lifting ring 41, thereby realizing the purpose and effect of swinging; the swing main body of the adjusting device is the whole back-up clamp part at the lower end, the expansion and contraction of the adjusting hydraulic cylinder 13 is fed back to the back-up clamp part through the clamp frame 23, so that the back-up clamp part is rotated along the neutral line of the corresponding connection point relative to the power tap 1, an included angle is formed between the back-up clamp part and the power tap 1, and the purpose and effect of swing are realized.
The moving body and the reference object of the relative swing are different, so that the two are both physically swung, but the moving process is completely different.
It should be noted that, in the embodiments of the present invention, all the expressions "first", "second", "third" and "fourth" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the expressions "first", "second", "third" and "fourth" are merely used for convenience of description, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described in any way.
In the description of the present invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (6)
1. A simple type well repairing top drive back-up wrench is characterized in that: comprising
A power tap (1);
the swinging device (2) is arranged at the upper end of the power tap (1) and can drive the power tap (1) to swing;
the adjusting device is arranged at the lower end of the power tap (1) and can swing relative to the power tap (1);
the clamping device (3) is arranged at the lower end of the adjusting device and can clamp or release the tubular column (4);
a control device for controlling the swing of the swing device (2), the swing of the adjustment device and the clamping of the clamping device (3);
the adjusting device comprises
The connecting seat (11) is arranged at the lower end of the power tap (1) and is hinged with the upper end of the clamping device (3);
an adjusting hydraulic cylinder (13) with one end hinged with the end part of the connecting seat (11) and the other end hinged with the upper part of the clamping device (3);
the stretching and retracting of the adjusting hydraulic cylinder (13) drives the clamping device (3) to swing;
the clamping device (3) comprises
A clamp body hinged to the adjustment device;
the clamping clamp body is arranged at the lower part of the clamping main body and can clamp or loosen the pipe column (4);
the clamping forceps body comprises
The top end and the upper part of the clamp frame (23) are respectively hinged with the adjusting device;
a hanger (24) provided at a lower portion of the jaw (23);
the clamp body (26) is arranged on the suspension bracket (24) through a fixed shaft (25), and the clamp body (26) is provided with a back-up clamp hydraulic cylinder (27);
an elastic mechanism (29) which is sleeved outside the fixed shaft (25) and connects the clamp body (26) and the fixed shaft (25);
a guide rail (28) passing through the jaw body (26);
the pliers body (26) and the back pliers hydraulic cylinder (27) float along the fixed shaft (25) and the guide rail (28) through the elastic mechanism (29);
a limiting block (32) is arranged at one end of the clamp body (26) opposite to the jaw,
the back-up wrench is characterized in that symmetrical pin shafts are arranged at two opposite ends of the back-up wrench cylinder (27) adjacent to the jaw, symmetrical tooth plates (31) are arranged at two opposite ends of the wrench body adjacent to the jaw, and the tooth plates (31) are connected with the pin shafts through tooth plate seats (33);
the back-up wrench hydraulic cylinder (27) can drive the two dental plates (31) to approach or separate.
2. The simple workover top drive back-up wrench of claim 1, wherein: the upper end of the suspension bracket (24) is provided with a flange (30) with an ear;
an adjusting screw (21) is arranged on the lug flange (30) in a penetrating mode, and the upper end of the adjusting screw (21) is arranged on the clamp frame (23) in a lifting mode.
3. The simple workover top drive back-up wrench of claim 1, wherein: the power tap (1) is fixedly provided with a lifting ring pin (42), and the lifting ring pin (42) penetrates out of the power tap (1);
the swinging device (2) comprises
A swing main body, the inside of which is provided with a swing mechanism;
a lifting ring (41) with the upper end fixed and the lower end rotationally connected with the lifting ring pin (42);
the swing mechanism is connected with the power tap (1) and the lifting ring (41);
the power tap (1) is driven to swing by the expansion and contraction of the swinging mechanism.
4. The simplified workover top drive back-up wrench of claim 3, wherein: the swing mechanism comprises
A fixed support (17) fixedly connected with the lifting ring (41);
the buffer seat (20) is rotationally connected with the fixed support (17);
the connecting lug plate (19) is arranged on the lifting ring pin (42) in a penetrating manner and can rotate, and is fixedly connected with the power tap (1);
a swinging hydraulic cylinder (43) which connects the connection lug plate (19) and the buffer seat (20);
the swing hydraulic cylinder (43) stretches to drive the power tap (1) to swing.
5. The simple workover roof drive back-up wrench of claim 4, wherein: the control device comprises an operating system and a control system.
6. The simple workover top drive back-up wrench of claim 5, wherein: the operating system comprises a back-up wrench operating end and a tap control end,
the control system connected with the oil inlet comprises a pressurizing valve, a needle valve, a sequence valve, a core inserting valve and a flow dividing and collecting valve, and forms a complete hydraulic circuit with the back-up wrench hydraulic cylinder (27), the swinging hydraulic cylinder (43) and the adjusting hydraulic cylinder (13);
the back-up wrench operation ends are respectively connected to the back-up wrench hydraulic cylinder (27) and the adjusting hydraulic cylinder (13) and are controlled;
the faucet control end is connected to and controls the swing cylinder (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211433119.9A CN115492539B (en) | 2022-11-16 | 2022-11-16 | Simple type back-up wrench for well repairing top drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211433119.9A CN115492539B (en) | 2022-11-16 | 2022-11-16 | Simple type back-up wrench for well repairing top drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115492539A CN115492539A (en) | 2022-12-20 |
| CN115492539B true CN115492539B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211433119.9A Active CN115492539B (en) | 2022-11-16 | 2022-11-16 | Simple type back-up wrench for well repairing top drive |
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| Country | Link |
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| CN (1) | CN115492539B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205063863U (en) * | 2015-09-01 | 2016-03-02 | 山东科瑞机械制造有限公司 | But offset top -drive |
| CN205605143U (en) * | 2016-02-26 | 2016-09-28 | 山东胜利石油装备产业技术研究院 | Device of breaking out on floating sucker rod is automatic |
| CN205778607U (en) * | 2016-05-19 | 2016-12-07 | 胜利油田胜机石油装备有限公司 | A kind of multifunctional crane card device |
| CN107654186B (en) * | 2017-08-30 | 2019-03-12 | 兰州兰石集团有限公司 | A kind of drill top-drive system |
| CN108756785B (en) * | 2018-07-26 | 2023-10-10 | 江苏如石机械股份有限公司 | Pliers head swing mechanism for iron roughneck |
| CN210768653U (en) * | 2019-11-04 | 2020-06-16 | 胜利油田胜机石油装备有限公司 | Automatic hydraulic pliers with punching and buckling functions |
| CN111395947B (en) * | 2020-03-24 | 2022-07-26 | 中国地质装备集团有限公司 | Multi-process top electrically-driven drilling device |
| CN214498949U (en) * | 2020-12-28 | 2021-10-26 | 江苏如石机械股份有限公司 | Power faucet with swing arm mechanism |
| CN216197914U (en) * | 2021-12-10 | 2022-04-05 | 东营市天亿石油工具制造有限公司 | Automatic single device of falling of oil field |
| CN217760909U (en) * | 2022-08-05 | 2022-11-08 | 东营市天亿石油工具制造有限公司 | Main tong and elevator combined device of workover hydraulic tong |
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2022
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| Publication number | Publication date |
|---|---|
| CN115492539A (en) | 2022-12-20 |
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