Oil pipe lifting device for integrated workover rig

Abstract

The utility model discloses an oil pipe lifting device for an integrated workover rig, and mainly relates to the field of oil pipe lifting operation. Comprising a mast stand column, a hinge seat and a fixing sleeve, the fixing sleeve is horizontally fixed to the side, close to a vehicle body, of a derrick, the hinge seat is located above the fixing sleeve and close to one end of the fixing sleeve, a swing seat is rotatably installed on the hinge seat, and a swing rod slidably connected with the swing seat penetrates through the swing seat; a follow-up sleeve perpendicular to the swing rod is fixed to the end, close to the fixed sleeve, of the swing rod, the follow-up sleeve and the fixed sleeve are vertically arranged in parallel, one end of the follow-up sleeve is matched with an upper telescopic rod in a telescopic mode, one end of the fixed sleeve is matched with a lower telescopic rod in a telescopic mode, and the tail end of the upper telescopic rod and the tail end of the lower telescopic rod are hinged to a mast stand column. A hoisting mechanism is installed on the mast stand column. The utility model has the beneficial effects that the device is mounted on the derrick of the workover vehicle, can be unfolded along with operation, and can be folded and attached to the derrick after the operation is completed, so that the convenient operation and movement are realized.

Description

Technical Field

[0001] This utility model relates to the field of tubing lifting operations, specifically an integrated tubing lifting device for workover rigs. Background Technology

[0002] During well workover operations, the tubing needs to be lifted vertically and raised to a suitable height on the wellhead platform to facilitate the next step of tubing lowering. The typical procedure involves manually installing lifting clamps, lifting rings, and other lifting tools onto the tubing joint, ensuring a tight and secure fit, and then directing the slow lifting of the lifting tools. During lifting, it is crucial to maintain a consistent lifting speed to prevent tubing swaying or collisions, and operators must closely monitor the lifting process. This operation carries significant risks because the tubing changes its orientation during lifting, shifting from a horizontal to an vertical position, which poses a considerable danger to personnel working nearby on the surface.

[0003] Existing automated lifting equipment has a relatively complex structure. Most of it requires independent installation and use. When working at the wellhead, it needs to be installed in advance and dismantled after the operation, and it needs to cooperate with various automated devices. This results in high costs for automating wellhead operations, cumbersome disassembly and assembly processes, and complex coordination, raising the cost and technical barriers to automated operations. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated tubing lifting device for workover rigs. It is installed on the derrick of the workover vehicle, can be deployed during operation, and can be retracted and attached to the derrick after the operation is completed, so as to achieve convenient operation and movement.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] An integrated workover rig tubing lifting device includes a mast column, a hinged seat and a fixed sleeve fixedly mounted on the derrick. The fixed sleeve is horizontally fixed to the side of the derrick near the vehicle body. The hinged seat is located above the fixed sleeve and near one end of the fixed sleeve. A swing seat is rotatably mounted on the hinged seat. A swing rod slidably connected to the swing seat passes through the swing seat. A follower sleeve perpendicular to the swing rod is fixed to one end of the swing rod near the fixed sleeve. The follower sleeve is arranged parallel to the fixed sleeve vertically. One end of the follower sleeve is provided with an upper telescopic rod that telescopically cooperates with it. One end of the fixed sleeve is provided with a lower telescopic rod that telescopically cooperates with it. The ends of the upper and lower telescopic rods are respectively hinged to the mast column. A lifting mechanism is installed on the mast column.

[0007] One end of the swing rod is fixed to the end of the follower sleeve near the upper telescopic rod, and the other end of the swing rod is provided with a stop that cannot penetrate the swing seat.

[0008] The top of the mast column is provided with an upper hinge shaft, and the lower part of the mast column is provided with a lower hinge shaft. Both the upper and lower hinge shafts are located on the side of the mast column near the workover frame. The end of the upper telescopic rod away from the follower sleeve is rotatably connected to the upper hinge shaft, and the end of the lower telescopic rod away from the fixed sleeve is rotatably connected to the lower hinge shaft.

[0009] The lifting mechanism includes a lifting seat with a lifting stroke along the mast column. A swing shaft is rotatably mounted on the lifting seat. A mating plate perpendicular to the swing shaft is fixed at the end away from the lifting seat. A limit plate is vertically fixed on one side of the mating plate. A portal groove is provided on the bottom side of the limit plate. The opening of the portal groove is on the bottom side. Two clamping blocks parallel to the limit plate are provided on one side. An arc-shaped slot is provided on the adjacent side of the clamping blocks. The arc-shaped slot is symmetrically arranged on the left and right sides relative to the bottom of the portal groove. The two clamping blocks have a clamping action of moving closer or further away from each other relative to the portal groove.

[0010] The top of the portal groove is provided with a semi-circular arc-shaped groove bottom, and the width of the portal groove and the diameter of the groove bottom are adapted to the diameter of the oil pipe.

[0011] The mast column is a hollow tubular structure. Guide wheel frames are symmetrically installed at the top and bottom of the mast column. Several parallel guide wheels are rotatably installed on the guide wheel frames. At least one guide wheel is driven by a motor. A spiral steel wire rope is wound between all the guide wheels. The steel wire rope rotates from inside the mast column and between the side of the mast column away from the derrick. Several connectors are provided on the lifting platform. The steel wire rope passes through the connectors and is fixed to the connectors.

[0012] The connector is centrally mounted on the lifting seat, and a rotating seat is fixed on one side of the lifting seat. One end of the swing shaft is rotatably mounted on the rotating seat.

[0013] The lifting seat is a C-shaped sleeve structure that is fitted onto the outside of the mast column, and the lifting seat has a notch on the side near the derrick.

[0014] The top side of the limiting plate or the top side of the mating plate is provided with a mounting seat. A double-headed cylinder is fixed on the mounting seat. Double-headed cylinder rods are telescopically fitted at both ends of the double-headed cylinder. A vertical rod is fixed above the clamping block. The outer end of the double-headed cylinder rod is fixedly connected to the top end of the vertical rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This device can be integrated and installed on one side of the derrick, moving with the vehicle as a functional module. During well workover operations, it unfolds as the derrick is erected. After unfolding, the mast column forms a certain angle with the derrick, ensuring that the mast column remains perpendicular to the ground even when the derrick is tilted. This provides a vertical and stable condition for vertically raising and lowering the tubing. The retraction structure is simple, easy to operate, does not occupy on-site space, adapts to various complex site conditions, and significantly reduces configuration costs and operational difficulty, making it worthy of widespread adoption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model (the unfeatured parts in the middle are omitted).

[0018] Figure 2 yes Figure 1 A schematic diagram of the base structure of the mast column.

[0019] Figure 3 yes Figure 2 The front view.

[0020] Figure 4 This is a schematic diagram of the overall design of this utility model.

[0021] Figure 5 yes Figure 4 Enlarged view of part C.

[0022] Figure 6 This is a side view of the present invention during operation (the dotted line represents a simulation of the derrick).

[0023] Figure 7 This is a schematic diagram of the operation of this utility model (the dotted line part is a simulation of the derrick).

[0024] Figure 8 This is a schematic diagram of the present invention folded up to one side of the derrick (the dotted line part is a simulation of the derrick).

[0025] Figure 9 This is a top view of the utility model folded up on one side of the derrick.

[0026] The labels shown in the attached diagram:

[0027] 1. Mast column; 2. Hinge seat; 3. Swing seat; 4. Swing rod; 5. Stop block; 6. Follower sleeve; 7. Upper telescopic rod; 8. Fixed sleeve; 9. Lower telescopic rod; 10. Guide wheel frame; 11. Guide wheel; 12. Wire rope; 13. Lifting motor; 14. Lifting seat; 15. Connector; 16. Rotating seat; 17. Swing shaft; 18. Mating plate; 19. Limiting plate; 20. Gate-shaped groove; 21. Clamping block; 22. Arc-shaped slot; 23. Upright pole; 24. Mounting seat; 25. Double-headed cylinder body; 26. Double-headed cylinder rod; 27. Notch. Detailed Implementation

[0028] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0029] Example:

[0030] This example optimizes the tubing lifting equipment of the workover rig, enabling its modular integration onto the workover frame. This allows for a simpler structure and operation, replacing the existing complex structure and cumbersome coordination.

[0031] This device is designed to work with a derrick, and therefore includes a retrieval mechanism for mounting on the derrick and capable of dynamically retracting and deploying the vehicle as it moves with the derrick, as well as a lifting mechanism mounted on the retrieval mechanism.

[0032] 1. Vehicle collection agency

[0033] The retrieval mechanism not only ensures that the entire device stays close to the derrick as much as possible during retrieval, without protruding significantly, but also guarantees upright lifting during the hoisting process. Therefore, it includes a mast column 1 that remains perpendicular to the bottom surface during operation. The mast column 1 is located on one side of the derrick (if the side closest to the wellhead is considered the front side, the mast column 1 is located on the left or right side; in this example, the mast column 1 is located on the right side of the derrick relative to the wellhead). The top of the mast column 1 has an upper hinge shaft, and the bottom of the mast column 1 has a lower hinge shaft. Both the upper and lower hinge shafts are located on the side of the mast column 1 closest to the derrick.

[0034] It also includes a hinge seat 2 and a fixed sleeve 8 fixedly installed on the derrick. The hinge seat 2 and the fixed sleeve 8 are arranged vertically. A swing seat 3 is rotatably installed on the hinge seat 2. The swing seat 3 is a hollow sleeve-type structure. A swing rod 4 is slidably connected to the swing seat 3. A stop block 5 is provided at the end of the swing rod 4 near the derrick. The stop block 5 cannot pass through the swing seat 3 to prevent slippage. A follower sleeve 6 is fixedly fixed to the end of the swing rod 4 away from the derrick. The follower sleeve 6 is parallel to the side of the derrick closer to the vehicle body. One end of the swing rod 4 is fixed at the edge of one end of the follower sleeve 6, so that the follower sleeve 6 can be on one side of the derrick without obviously protruding from the derrick range, which is beneficial for it to be closer to the derrick after the vehicle is withdrawn. An upper telescopic rod 7 is provided at the end of the follower sleeve 6 near the connection of the swing rod 4. The upper telescopic rod 7 is rotatably connected to the upper hinge shaft at the end away from the follower sleeve 6. The fixed sleeve 8 is fixedly installed on the side of the derrick near the vehicle body, and the fixed sleeve 8 also extends horizontally. Therefore, the follower sleeve 6 is arranged in parallel with the fixed sleeve 8. The fixed sleeve 8 is provided with a lower telescopic rod 9 that slides and extends with it at one end near the mast column 1. The end of the lower telescopic rod 9 is rotatably connected to the lower hinge shaft.

[0035] Based on the above structure, the mast column 1 can extend relative to the derrick to one side of the vehicle (upper telescopic rod 7 and lower telescopic rod 9 telescopic movements), and its angle relative to the derrick can be adjusted. When not in operation, the derrick is laid down on top of the workover vehicle, its bottom hinged to the vehicle position, and its lowering and erection are achieved through a related power structure. When reaching the vicinity of the wellhead and commencing workover operations, the derrick gradually erects from its lying position. To facilitate workover at the wellhead, its final working state is tilted from the vehicle body towards the wellhead, and the tubing must be perpendicular to the wellhead. Therefore, the tubing should ideally be in a vertical position after being lifted. Based on the above structure, as the mast column 1 is erected along with the derrick, its own weight causes the swing rod 4 to extend away from the derrick. The maximum extension is constrained by the stop block 5. When the derrick reaches its working angle, the stop block 5 contacts the swing seat 3, and in conjunction with the lower hinge shaft, the mast column 1 is positioned perpendicular to the wellhead. Furthermore, by extending the upper telescopic rod 7 and the lower telescopic rod 9 away from the workover vehicle, the mast column 1 is moved away from the derrick as a whole, which facilitates cooperation with the oil pipe below and provides space for the robotic arm to grasp.

[0036] In terms of power, to improve positioning during operation, a hydraulic cylinder or electric cylinder can be added to assist in pushing and positioning. For example, a hole can be drilled in the side wall of the follower sleeve 6, and a connecting block can be fixed to the inner end of the lower telescopic rod 9. An auxiliary cylinder can be installed above or below the fixed sleeve 8, with an auxiliary lever telescopically engaged at the end of the auxiliary cylinder near the mast column 1. The end of the auxiliary lever is fixed relative to the connecting block, thereby achieving assisted pushing or restraining of the extension and retraction stroke of the lower telescopic rod 9. Not limited to this example, an auxiliary cylinder can also be added to the upper telescopic rod 7 as a power source, or other linear stroke power sources can be used.

[0037] 2. Lifting mechanism

[0038] The lifting mechanism is mounted on the mast column 1. For ease of description, the end face of the mast column 1 away from the derrick is defined as the working surface. The mast column 1 is made of hollow square steel with a channel running through it vertically. Guide wheel frames 10 are symmetrically installed at the top and bottom of the mast column 1. Two parallel guide wheels 11 are rotatably mounted on the guide wheel frames 10. A loop-shaped steel wire rope 12 is wound between the four guide wheels 11. The steel wire rope 12 is guided by the guide wheels 11 at both ends, with half of it passing through the channel and the other half of the steel wire rope 12 located centrally on the working surface, providing power for the lifting action.

[0039] A lifting motor 13 is installed at the bottom of the mast column 1, and the output shaft of the lifting motor 13 is used to provide power to one of the guide wheels 11 at the bottom.

[0040] A lifting seat 14 is fitted onto the mast column 1 and slides vertically relative to it. The lifting seat 14 adopts a C-shaped structure and has a notch 27 on the side away from the working surface to facilitate the clearance of the upper hinge shaft during lifting.

[0041] The lifting seat 14 is provided with a connector 15 in the center. There are two connectors 15, which are arranged vertically relative to the lifting seat 14. The connectors 15 adopt a tubular structure. The steel wire rope 12 passes through the upper and lower connectors 15 and is fixed to the connectors 15, so that when the steel wire rope 12 rotates, it drives the lifting seat 14 to rise and fall.

[0042] A rotating seat 16 is fixed to one side of the lifting seat 14. A swing shaft 17 is rotatably inserted through the rotating seat 16. One end of the swing shaft 17 protrudes from the working surface and is fixedly connected to a mating plate 18. A limiting plate 19 is vertically fixed to one side of the mating plate 18. A portal groove 20 is provided on the bottom side of the limiting plate 19. The opening of the portal groove 20 is on the bottom side, and the top of the portal groove 20 is provided with a semi-circular bottom. The width of the portal groove 20 and the diameter of the bottom are adapted to the diameter of the oil pipe. When the lifting seat 14 is lowered, the portal groove 20 can be inserted into the circumference of the oil pipe located on the slot frame, and the circumference of the oil pipe is adapted to the bottom of the portal groove 20, thus achieving preliminary positioning.

[0043] The limiting plate 19 has two clamping blocks 21 parallel to it on one side. The adjacent side of the clamping block 21 has an arc-shaped groove 22. The arc-shaped groove 22 is symmetrically arranged on the left and right sides of the bottom of the gate-shaped groove 20.

[0044] A vertical rod 23 is fixed above the clamping block 21. A mounting base 24 is provided on the top side of the limiting plate 19 or the top side of the mating plate 18. A double-headed cylinder 25 is fixed on the mounting base 24. Double-headed cylinder rods 26 are telescopically fitted to both ends of the double-headed cylinder 25. The outer ends of the double-headed cylinder rods 26 are fixedly connected to the top of the vertical rod 23. The double-headed cylinder 25 drives the clamping action of the two clamping blocks 21, causing the clamping blocks 21 on both sides to move closer or further away from each other relative to the portal groove 20. When the clamping blocks 21 are closed, the arc-shaped groove 22 and the bottom of the portal groove 20 are concentric, achieving the clamping of the oil pipe. When the lifting seat 14 is raised, the oil pipe is lifted based on the protrusion of the oil pipe front end clamp.

[0045] The operating principle of this module is as follows: When the oil pipe is positioned and transported below the lifting seat 14, and the oil pipe clamp is located on the right side of the lifting seat 14 (facing the working surface), the lifting seat 14 lowers, causing the oil pipe to be inserted into the portal groove 20 and reach the bottom of the groove. The clamping blocks 21 on both sides close together to clamp the oil pipe. When the wire rope 12 is activated to lift the lifting seat 14 upward, the oil pipe clamp and the clamping blocks prevent the oil pipe from being lifted. During the lifting process, the oil pipe gradually changes from a lying position to an upright position. There is a change in posture, and the swing shaft 17 allows the mating plate 18 to adapt to the posture of the oil pipe, always maintaining perpendicularity to the axis of the oil pipe. This adapts to the changes in the posture of the oil pipe during the lifting process, maintaining a good clamping effect and preventing damage to the oil pipe.

[0046] After the operation is completed, the upper telescopic rod 7 and the lower telescopic rod 9 are retracted, so that the mast column 1 is close to the side of the derrick, and the swing rod 4 moves to the right, so that the follower sleeve 6 is close to the side of the derrick near the vehicle body. After the device is retracted, this module is set close to the derrick, and the overall structure is relatively compact compared to the derrick structure, making it easy to move.

Claims

1. A tubing hoist for an integrated workover rig, comprising: The utility model provides a kind of well drilling rig, including mast column, and hinged seat and fixed sleeve pipe fixedly installed on derrick, the fixed sleeve pipe is horizontally fixed in the side of derrick close to vehicle body, the hinged seat is located above fixed sleeve pipe and is arranged at one end close to fixed sleeve pipe, swing seat is rotatably installed on the hinged seat, swing rod is slidably connected in swing seat, and the end of swing rod close to fixed sleeve pipe is fixed with vertical follow-up sleeve pipe, the follow-up sleeve pipe is arranged in parallel with fixed sleeve pipe, one end of the follow-up sleeve pipe is equipped with upper telescopic rod, one end of the fixed sleeve pipe is equipped with lower telescopic rod, and the end of upper telescopic rod and lower telescopic rod is hinged on mast column respectively, and hoisting mechanism is installed on mast column.

2. The tubing hoisting device for integrated workover rig according to claim 1, characterized in that, One end of the swing rod is fixed in the end of follow-up sleeve pipe close to upper telescopic rod, and the other end of the swing rod is equipped with stopper that cannot penetrate swing seat.

3. The tubing hoisting device for integrated workover rig of claim 1, wherein, The top of the mast column is equipped with upper hinged shaft, and the lower part of the mast column is equipped with lower hinged shaft, and the upper hinged shaft and lower hinged shaft are arranged in the side of mast column close to well drilling rig, and the end of upper telescopic rod away from follow-up sleeve pipe is rotatably connected with upper hinged shaft, and the end of lower telescopic rod away from fixed sleeve pipe is rotatably connected with lower hinged shaft.

4. The tubing hoisting device for integrated workover rig of claim 1, wherein, The hoisting mechanism includes lifting seat with lifting stroke along mast column, swing shaft is rotatably installed on the lifting seat, the end of swing shaft away from lifting seat is fixed with vertical matching plate, the side of matching plate is vertically fixed with limit plate, the bottom side of limit plate is equipped with door type slot, the slot opening of door type slot is in bottom side, the side of limit plate is equipped with two pieces of clamping block parallel with it, the side of clamping block adjacent is equipped with arc-shaped clamping groove, the arc-shaped clamping groove is symmetrically arranged left and right with the groove bottom of door type slot, and the two clamping blocks have clamping action of approaching or moving away each other relative to door type slot.

5. The tubing hoisting device for integrated workover rig of claim 4, wherein, The top end of door type slot is equipped with semicircular arc-shaped groove bottom, and the width of door type slot and the diameter of groove bottom are adapted to the diameter of oil pipe.

6. The tubing hoisting device for integrated workover rig of claim 4, wherein, The mast column is hollow pipe structure, and the top end and bottom end of the mast column are symmetrically installed with guide wheel frame respectively, a plurality of parallel guide wheels are rotatably installed on the guide wheel frame, at least one guide wheel is rotatably driven based on motor, and the steel wire rope is wound between all guide wheels, the steel wire rope is rotated between the inside of mast column and the side of mast column away from derrick, a plurality of connecting pieces are arranged on the lifting seat, and the steel wire rope penetrates through connecting piece and is fixed on connecting piece.

7. The tubing hoisting device for integrated workover rig of claim 4, wherein, The lifting seat is C-shaped sleeve structure that is sleeved on the outside of mast column, and the lifting seat is equipped with notch in the side close to derrick.

8. The tubing hoisting device for integrated workover rig of claim 6, wherein, The connecting piece is centrally arranged on the lifting seat, and the side of lifting seat is fixed with rotating seat, and one end of swing shaft is rotatably installed on rotating seat.

9. The tubing hoisting system of claim 4, wherein, The top side of limit plate or the top side of matching plate is equipped with mounting seat, double-head cylinder body is fixed on mounting seat, double-head cylinder rod is telescopically matched with both ends of double-head cylinder body respectively, and vertical rod is fixed above clamping block, and the outer end of double-head cylinder rod is fixedly connected with the top end of vertical rod.

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