Electrically-driven energy storage workover rig

Abstract

The invention relates to the technical field of workover rigs, and discloses an electric drive energy storage workover rig which comprises a workover rig body, two sliding rods are fixedly connected to the left side of the workover rig body, a centering disc capable of being lifted up and down is slidably connected between the sliding rods in a sleeved mode, a rotating ring is rotatably connected to the inner wall of the centering disc, and a sliding frame is fixedly connected into the rotating ring. A centering frame is clamped in the middle of the sliding frame in a sliding mode, and a hanging head is spherically hinged to the bottom of the centering frame. The centering frame is used for driving the half clamping pipe to correct the deviation between the half clamping pipe and the center position of a well hole, during moving positioning, the initial half clamping pipe and the well hole are allowed to have large dislocation, the seating positioning difficulty of the derrick is greatly reduced, the two centering sleeves and the cam rod are used in cooperation to conduct fine adjustment centering on the half clamping pipe and the well hole, centering is convenient and fast, the precision is high, and the centering precision is high. The swinging direction of the hanging head is limited through the U-shaped guide plate in a matched mode, the two half clamping pipes are used for vertically and movably taking the pipes in a clamping mode, and therefore the pipe taking accuracy and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of workover rigs, and in particular to an electrically driven energy storage workover rig. Background Art

[0002] The electric-driven energy storage workover rig is an advanced oil well repair equipment. It adopts an electric drive system. Compared with the traditional internal combustion engine drive, it has higher energy utilization efficiency and lower noise and exhaust emissions, and is more environmentally friendly and energy-saving. At the same time, it is equipped with an energy storage device, which can store excess electricity during the intervals of well repair operations and release it when needed, effectively solving the problem of uneven electricity demand during the operation process, improving energy utilization and reducing operating costs.

[0003] When the current electric-driven energy storage well repair rig uses a well repair trailer to place the well repair frame, it is necessary to control the trailer to move back and forth continuously to adjust the position because it is necessary to ensure that the center of the clamping part is aligned with the wellbore when the well repair frame is placed. However, it cannot completely ensure that the center of the clamping part is aligned with the wellbore when the well repair frame is placed. It can only ensure that the center of the clamping part is roughly above the wellbore when the well repair frame is placed. This is not only troublesome to operate, but also seriously delays the construction progress. When the centering is not good, it is easy to cause the lifting and lowering pipes to collide and scratch with the well wall due to eccentricity, and generate additional resistance to increase control power consumption; the clamping parts of most existing well repair rigs are directly connected to the lower end of the wire rope hook. Since the clamping part adopts a semi-enclosed lateral pipe clamping mechanism When the clamping position is reached, the operator needs to rely on experience to control the movement of the clamping mechanism, and cooperate with the swing inertia of the hook to make the hook swing to drive the clamping mechanism to swing to one side, and when the hook swings back, it drives the clamping mechanism to clamp the pipe column with a semi-enclosed bayonet for clamping. Since the shaking force during actual operation is difficult to accurately control due to the construction environment and mechanical influences, and the pipe column is lifted out of the wellbore after clamping, it is also necessary to cooperate with the pushing mechanism to tilt the pipe column to one side and push it to the inclined slide for collection. The corresponding clamping mechanism is also tilted to one side, so when the hook drives the clamping mechanism to return to its position, the shaking force is increased, and the shaking direction is difficult to control, so it is difficult to clamp the pipe column in one go, which reduces the construction efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that a general electric-driven energy storage workover rig has poor alignment with the wellbore and is difficult to clamp the pipe column at one time during use. The present invention provides an electric-driven energy storage workover rig.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: An electric drive energy storage workover rig, comprising a workover mast. Two sliding rods are fixedly connected to the left side of the workover mast. A centering disc capable of lifting up and down is slidably sleeved between the sliding rods. A rotating ring is rotatably connected to the inner wall of the centering disc. A sliding frame is fixedly connected in the rotating ring. A centering frame is slidably clamped in the middle of the sliding frame. A suspension head is ball-jointed at the bottom of the centering frame. A clamping ring is rotatably connected to the lower wall of the centering frame. A U-shaped guide plate that is movably clamped with the suspension head is fixedly connected to the bottom of the clamping ring. A swing control assembly for locking the suspension head and the U-shaped guide plate is arranged in the centering frame. A fixing assembly for locking the centering frame and the swing control assembly is arranged on the right side of the sliding frame; Two semi-clamping pipes capable of opening and closing are arranged at the bottom of the suspension head. A centering sleeve is slidably clamped on the outer wall of the semi-clamping pipe. A semi-circular plug board is slidably inserted into the top of the centering sleeve. Cam rods are rotatably connected to the inner walls on both the front and back sides of the centering sleeve.

[0006] Furthermore, it further includes a workover truck. An energy storage mechanism is installed at the bottom of the workover truck. The workover mast is arranged at the tail of the workover truck. Two pulleys are rotatably connected to the top of the inner cavity of the workover mast. A driving motor and a power recovery mechanism are installed at the bottom of the inner cavity of the workover mast. A steel wire rope fixedly connected to the upper wall of the centering disc is arranged at the output end of the driving motor. The steel wire rope passes through the power recovery mechanism and the two pulleys.

[0007] Furthermore, the fixing assembly includes a spiral groove rod rotatably connected to the upper side of the sliding frame. A convex block that is movably clamped with the spiral groove rod is arranged on the top cavity wall of the centering frame. Two friction plates are fixedly sleeved on the right side of the spiral groove rod. A T-shaped pressing plate sleeved on the spiral groove rod is slidably clamped on the right side of the sliding frame. The T-shaped pressing plate is located between the two friction plates. A first telescopic cylinder fixedly connected to the T-shaped pressing plate is installed on the sliding frame. A friction groove corresponding to the T-shaped pressing plate is opened on the upper wall of the inner cavity of the centering disc.

[0008] Furthermore, the swing control assembly includes a chuck slidably clamped on the inner wall of the centering frame. An elastic pin that is clamped with the suspension head is slidably connected to the bottom of the chuck. A first clamping groove adapted to the elastic pin is opened on the top of the suspension head. A sliding groove penetrates through the chuck. A crank pipe that is movably clamped with the sliding groove is rotatably connected to the top of the inner cavity of the centering frame; A guide rod is rotatably connected to the lower side of the sliding frame. The guide rod is slidably clamped in the inner wall of the crank pipe. A first guide groove is opened on the right side of the guide rod. A first pin projection that is movably clamped with the first guide groove is arranged on the bottom cavity wall of the T-shaped pressing plate.

[0009] Furthermore, the first guide groove is composed of a connected straight guide groove and arc guide groove.

[0010] Further, a friction slot is provided on the outer wall of the snap ring, and L-shaped abutting plates are fixedly connected to the left and right sides of the lower wall of the chuck. The L-shaped abutting plates movably pass through the lower wall of the centering frame and can abut against the upper and lower walls of the friction slot.

[0011] Further, two meshing tooth racks are rotatably connected to the bottom of the suspension head. A telescopic cylinder II is movably hinged between the tooth racks. The semi-clamping pipe is fixedly connected to the bottom of the tooth rack, and a friction layer is fixedly connected to the inner wall of the semi-clamping pipe.

[0012] Further, a T-shaped elastic column is slidably inserted into the top of the centering sleeve. A second slot adapted to the T-shaped elastic column is provided on the outer wall of the semi-clamping pipe. An arc-shaped slot for movably clamping the T-shaped elastic column is provided on the semi-circular insertion plate. The two arc-shaped slots are circumferentially arranged in an array, and a semi-circular slot adapted to the semi-circular insertion plate is provided on the top of the centering sleeve.

[0013] Further, a second guide slot is provided on the cam rod. The second guide slot is composed of a combined spiral guide slot and a vertical guide slot. A second pin protrusion for movably clamping with the vertical guide slot is provided on the outer wall of the semi-clamping pipe. A through slot corresponding to the centering sleeve and the cam rod is provided at the bottom of the semi-clamping pipe.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention uses a rotating ring and a centering frame capable of moving radially along the rotating ring to drive the semi-clamping pipe to correct the deviation from the center position of the wellbore. Therefore, during the moving and positioning, a large misalignment between the initial semi-clamping pipe and the wellbore is allowed, greatly reducing the seating and positioning difficulty of the workover rig, eliminating the need for the workover truck to continuously move and correct the position, and improving the seating efficiency of the workover rig.

[0015] 2. After the present invention controls the centering disc to drive the semi-clamping pipe to descend and approach above the wellbore, it controls the two centering sleeves to synchronously move downward and sleeved around the pipe string to be extracted under the drive of the semi-circular insertion plate. Each cam rod automatically deflects to extrude the pipe string, thereby controlling the fine centering of the semi-clamping pipe and the wellbore. The centering is convenient and highly accurate, and the subsequent lifting power consumption is reduced. The U-shaped guide plate is used to limit the swinging direction of the suspension head, thereby avoiding shaking interference in multiple directions. The two semi-clamping pipes are used to vertically move and pick up the pipe in a clamping form, thereby improving the accuracy and efficiency of pipe picking and ensuring the one-time clamping of the pipe string by the subsequent semi-clamping pipe.

[0016] 3. After the present invention adjusts the centering of the semi-clamping pipe and the wellbore, and adjusts the U-shaped guide plate to turn to the required direction to limit the swing of the suspension head, the clamping position is locked by the fixing component. The rotating ring and the centering frame are locked at the same time. The synchronous swing control component automatically releases the lock on the suspension head to facilitate its directional swing, and fixes the U-shaped guide plate. The control is convenient and the positioning is safe and reliable. Description of the Drawings

[0017] Figure 1 is the three-dimensional structure diagram of the workover rig of the present invention; Figure 2 is the three-dimensional sectional view of the derrick part of the workover rig of the present invention; Figure 3 is the three-dimensional structure diagram of the centering plate part of the workover rig of the present invention; Figure 4 is the three-dimensional sectional view of the centering plate part of the workover rig of the present invention; Figure 5 is the three-dimensional sectional view of the sliding frame part of the workover rig of the present invention; Figure 6 is the three-dimensional sectional view of the T-shaped backing plate part of the workover rig of the present invention; Figure 7 is the three-dimensional sectional view of the centering frame part of the workover rig of the present invention; Figure 8 is the three-dimensional sectional view of the semi-pipe clamp part of the workover rig of the present invention; Figure 9 is the exploded view of the semi-pipe clamp part of the workover rig of the present invention; Figure 10 is the three-dimensional structure diagram of the semi-circular plug and cam rod parts of the workover rig of the present invention.

[0018] Reference numerals: 1, workover truck; 11, energy storage mechanism; 2, derrick; 21, pulley; 22, sliding rod; 23, driving motor; 24, power recovery mechanism; 25, steel wire rope; 3, centering plate; 31, friction groove; 4, swivel ring; 41, sliding frame; 42, spiral groove rod; 43, friction plate; 44, guide rod; 45, first guide groove; 46, T-shaped backing plate; 47, first pin projection; 48, first telescopic cylinder; 5, centering frame; 51, convex block; 52, chuck; 53, elastic pin; 54, L-shaped backing plate; 55, chute; 56, crank pipe; 6, suspension head; 61, tooth rack; 62, second telescopic cylinder; 63, semi-pipe clamp; 64, friction interlayer; 65, second pin projection; 7, snap ring; 71, U-shaped guide plate; 8, centering sleeve; 81, T-shaped elastic column; 82, semi-circular plug; 83, arc groove; 84, cam rod; 85, second guide groove. Detailed implementation manners

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Embodiment 1, as shown in Figures 1-10As shown in the figure, an electric drive energy storage workover rig includes a workover derrick 2. Two sliding rods 22 are fixedly connected to the left side of the workover derrick 2. A centering plate 3 capable of lifting up and down is slidably sleeved between the sliding rods 22. A rotating ring 4 is rotatably connected to the inner wall of the centering plate 3. A sliding frame 41 is fixedly connected to the rotating ring 4. A centering frame 5 is slidably clamped in the middle of the sliding frame 41. A suspension head 6 is ball-jointed to the bottom of the centering frame 5. A clamping ring 7 is rotatably connected to the lower wall of the centering frame 5. A U-shaped guide plate 71 which is movably clamped with the suspension head 6 is fixedly connected to the bottom of the clamping ring 7. A swing control assembly for locking the suspension head 6 and the U-shaped guide plate 71 is arranged in the centering frame 5. A fixing assembly for locking the centering frame 5 and the swing control assembly is arranged on the right side of the sliding frame 41; Two semi-clamping pipes 63 capable of opening and closing are arranged at the bottom of the suspension head 6. A centering sleeve 8 is slidably clamped on the outer wall of the semi-clamping pipe 63. A semi-circular plug board 82 is slidably inserted into the top of the centering sleeve 8. Cam rods 84 are rotatably connected to the inner walls of the front and rear sides of the centering sleeve 8.

[0021] During use, the centering frame 5 is located at the center of the rotating ring 4. The workover derrick 2 is erected near the wellbore so that the centering frame 5 is relatively above the wellbore, and it is ensured that the wellbore is correspondingly below the inner range of the rotating ring 4. Control the centering plate 3 to drive the semi-clamping pipes 63 to descend above the wellbore and close to the pipe string to be extracted. Control the fixing assembly to release the fixing restriction on the centering frame 5. Slide the centering frame 5 along the sliding frame 41, and cooperate with controlling the centering frame 5 to drive the rotating ring 4 to rotate, so that the semi-clamping pipes 63 approach and finally are relatively directly above the pipe string to be extracted. Subsequently, control the two centering sleeves 8 to move downward. The two semi-circular plug boards 82 are synchronously inserted into the centering sleeves 8 on the opposite sides, so that the centering sleeves 8 on both sides can synchronously descend relative to the semi-clamping pipes 63. The centering sleeves 8 are sleeved on the periphery of the pipe string to be extracted and continue to move downward. Each cam rod 84 automatically deflects to extrude the pipe string. Under the action of the extrusion force, the centering frame 5 automatically moves, so as to facilitate controlling the fine centering of the semi-clamping pipes 63 and the pipe string. The centering is convenient and has high accuracy, and the lifting power consumption is reduced, ensuring that the subsequent semi-clamping pipes 63 can clamp the pipe string at one time. After the centering is completed, control the U-shaped guide plate 71 to turn to the required pipe releasing direction. Control the fixing assembly to lock the centering frame 5 and the swing control assembly. The position of the centering frame 5 in the rotating ring 4 is fixed. The swing control assembly locks the U-shaped guide plate 71 and unlocks the suspension head 6. The suspension head 6 can swing along the opening fixed direction of the U-shaped guide plate 71, so as to facilitate directional pipe releasing and reduce the interference of ineffective swinging. When resetting after pipe releasing, it is blocked by the U-shaped guide plate 71, so as to facilitate quickly controlling the suspension head 6 to stop, so as to cooperate with the semi-clamping pipes 63 to clamp the pipe string for the second time. When clamping the pipe string, use the sliding rods 22 to vertically guide the centering plate 3, and the two semi-clamping pipes 63 adopt the form of opening and closing on both sides to cooperate with pipe taking, reducing the shaking effect on the suspension head 6, thereby improving the accuracy and efficiency of pipe taking.

[0022] Embodiment 2, on the basis of the above embodiment, further includes a workover rig 1. An energy storage mechanism 11 is installed at the bottom of the workover rig 1. The workover mast 2 is arranged at the tail of the workover rig 1. Two pulleys 21 are rotatably connected to the top of the inner cavity of the workover mast 2. A driving motor 23 and a power recovery mechanism 24 are installed at the bottom of the inner cavity of the workover mast 2. A steel wire rope 25 fixedly connected to the upper wall of the centering disc 3 is arranged at the output end of the driving motor 23. The steel wire rope 25 passes through the power recovery mechanism 24 and the two pulleys 21.

[0023] During the pipe-taking operation by the upward movement of the centering disc 3, the driving motor 23 drives the steel wire rope 25 at the output end to wind up, and the power recovery mechanism 24 does not work. When controlling the downward movement of the centering disc 3 for the pipe-laying operation, the power recovery mechanism 24 operates to intervene and store the recovered electric energy into the energy storage mechanism 11 for utilization, thereby optimizing the use of the power supply.

[0024] Embodiment 3, on the basis of the above embodiment, the fixing assembly includes a spiral groove rod 42 rotatably connected to the upper side of the sliding frame 41. A convex block 51 that is movably clamped with the spiral groove rod 42 is arranged on the top cavity wall of the centering frame 5. Two friction plates 43 are fixedly sleeved on the right side of the spiral groove rod 42. A T-shaped abutting plate 46 sleeved on the spiral groove rod 42 is slidably clamped on the right side of the sliding frame 41. The T-shaped abutting plate 46 is located between the two friction plates 43. A first telescopic cylinder 48 fixedly connected to the T-shaped abutting plate 46 is installed on the sliding frame 41. A friction groove 31 corresponding to the T-shaped abutting plate 46 is opened on the upper wall of the inner cavity of the centering disc 3.

[0025] Initially, the first telescopic cylinder 48 drives the T-shaped abutting plate 46 to abut against one side wall of the friction groove 31 and the left friction plate 43 respectively, thereby restricting the rotation of the sliding frame 41 and the spiral groove rod 42. Since the centering frame 5 is movably clamped with the spiral groove rod 42 through the convex block 51 and the centering frame 5 is slidably clamped in the sliding frame 41, the centering frame 5 is restricted from moving, so as to facilitate the fixation of the centering frame 5 during transportation and avoid arbitrary sliding and collision.

[0026] Embodiment 4, on the basis of the above embodiment, the swing control assembly includes a chuck 52 slidably clamped on the inner wall of the centering frame 5. A resilient pin 53 clamped with the suspension head 6 is slidably connected to the bottom of the chuck 52. A first clamping groove adapted to the resilient pin 53 is opened at the top of the suspension head 6. A chute 55 penetrates through the chuck 52. A crank pipe 56 rotatably connected to the top of the inner cavity of the centering frame 5 and movably clamped with the chute 55 is provided; A guide rod 44 is rotatably connected to the lower side of the sliding frame 41. The guide rod 44 is slidably clamped with the inner wall of the crank pipe 56. A first guide groove 45 is opened on the right side of the guide rod 44. A first pin projection 47 movably clamped with the first guide groove 45 is arranged on the bottom cavity wall of the T-shaped abutting plate 46.

[0027] The initial elastic pin 53 is snapped into the first clamping groove. The chuck 52 is restricted from moving based on the sliding groove 55 by the crank pipe 56, and the guide rod 44 is restricted from rotating based on the first pin protrusion 47 by the T-shaped abutting plate 46. Since the outer wall of the crank pipe 56 is slidably clamped with the outer wall of the guide rod 44, the crank pipe 56 is restricted from rotating. The elastic pin 53 stably clamps the first clamping groove, and the suspension head 6 is restricted from swinging, thereby avoiding the collision caused by the wanton swinging of the suspension head 6 during transportation before use.

[0028] Further, the first guide groove 45 is composed of a combined structure of a straight guide groove and an arc guide groove that are connected.

[0029] During centering, the first telescopic cylinder 48 is controlled to extend, driving the T-shaped abutting plate 46 to be in the middle position between the two friction plates 43. Correspondingly, the fixing of the sliding frame 41 and the centering frame 5 is released, so that the centering frame 5 can be adjusted to different positions. The initial pin protrusion 47 is slidably clamped with the straight guide groove. After the T-shaped abutting plate 46 moves, the pin protrusion 47 is clamped into the arc guide groove for a small distance along the straight guide groove, and the guide rod 44 rotates slightly, but the elastic pin 53 still does not come out of the first clamping groove. The elastic pin 53 still stably clamps the first clamping groove to restrict the swinging of the suspension head 6, thereby ensuring that the half clamping pipe 63 part is always vertically downward during centering, which is convenient for finding the centering position. After centering is completed, the first telescopic cylinder 48 is controlled to continue to extend, driving the T-shaped abutting plate 46 to abut against the right friction plate 43 and also abut against the other side of the friction groove 31. The sliding frame 41 and the spiral groove rod 42 are restricted from rotating again, and the centering frame 5 is thus fixed again at any position. Since the pin protrusion 47 continuously moves along the arc guide groove, the guide rod 44 is driven to deflect greatly, and the elastic pin 53 thus comes out of the first clamping groove, so as to facilitate the swinging and pipe releasing of the suspension head 6 after centering.

[0030] Embodiment 5, on the basis of the above embodiment, the outer wall of the clamping ring 7 is provided with a friction clamping groove. The left and right sides of the lower wall of the chuck 52 are fixedly connected with L-shaped abutting plates 54. The L-shaped abutting plates 54 movably pass through the lower wall of the centering frame 5 and can abut against the upper and lower walls of the friction clamping groove.

[0031] Initially, the L-shaped abutting plate 54 abuts against the lower wall of the friction clamping groove under the drive of the chuck 52, and the clamping ring 7 is restricted from rotating, thereby avoiding the collision caused by the wanton rotation of the U-shaped guide plate 71 during transportation and the excessive wear caused by the over-rotation of the clamping ring 7. During centering, as the guide rod 44 rotates slightly, the crank pipe 56 drives the chuck 52 to make the L-shaped abutting plate 54 move slightly upward, and the limit of the L-shaped abutting plate 54 against the lower wall of the friction clamping groove is released, so as to facilitate synchronously adjusting the opening orientation of the U-shaped guide plate 71 according to the required pipe releasing direction to control the swinging direction of the subsequent suspension head 6. After centering is completed, since the pin protrusion 47 of the first pin continues to move along the arc-shaped guide groove, the guide rod 44 is driven to deflect significantly, and the L-shaped abutting plate 54 moves upward significantly and just abuts against the upper wall of the friction card slot. Thus, after the centering frame 5 is fixed, the U-shaped guide plate 71 is fixed synchronously, so as to stably limit the swinging direction of the subsequent suspension head 6, and avoid the swinging interference of the suspension head 6 in different directions caused by various factors, which affects the effect of the semi-clamping tube 63 clamping the pipe string.

[0032] Embodiment Six: On the basis of the above embodiment, two meshing tooth racks 61 are rotatably connected to the bottom of the suspension head 6. An expansion cylinder 62 is movably hinged between the tooth racks 61. The semi-clamping tube 63 is fixedly connected to the bottom of the tooth rack 61, and a friction layer 64 is fixedly connected to the inner wall of the semi-clamping tube 63.

[0033] Through the meshing mechanism between the tooth racks 61, the symmetrical opening and closing of the two semi-clamping tubes 63 are ensured, the shaking effect when the expansion cylinder 62 drives the semi-clamping tubes 63 to open and close is reduced. At the same time, the pipe string is clamped by the opening and closing method, which is coordinated with the vertical movement of the centering disc 3, and the friction layer 64 is used to increase the friction force. Clamping the pipe string is more stable than other methods, and can realize the one-time clamping of the pipe string, thereby improving the accuracy and efficiency of pipe taking.

[0034] Embodiment Seven: On the basis of the above embodiment, a T-shaped elastic column 81 is slidably inserted into the top of the centering sleeve 8. A second card slot adapted to the T-shaped elastic column 81 is opened on the outer wall of the semi-clamping tube 63. An arc-shaped groove 83 for movably clamping the T-shaped elastic column 81 is opened on the semi-circular insertion plate 82. The arc-shaped grooves 83 on both sides are circumferentially arranged in an array, and a semi-circular groove adapted to the semi-circular insertion plate 82 is opened on the top of the centering sleeve 8.

[0035] A second guide groove 85 is opened on the cam rod 84. The second guide groove 85 is composed of a combined spiral guide groove and a vertical guide groove that are connected. A second pin protrusion 65 that is movably clamped with the vertical guide groove is arranged on the outer wall of the semi-clamping tube 63. A through groove corresponding to the centering sleeve 8 and the cam rod 84 is opened at the bottom of the semi-clamping tube 63.

[0036] Initially, the T-shaped elastic column 81 is engaged with the second card slot, and the centering sleeve 8 is stably fixed on the outer wall of the semi-clamped tube 63. When the centering frame 5 is adjusted to be relatively above the wellbore during centering, the T-shaped elastic columns 81 on both sides are pulled out of the second card slot. The T-shaped elastic column 81 simultaneously toggles the arc groove 83, driving the semicircular plug plate 82 to deflect, so as to be plugged into the semicircular groove on the centering sleeve 8 on the opposite side, and controlling the centering sleeves 8 on both sides to move downward synchronously relative to the semi-clamped tube 63, so that the centering sleeves 8 are sleeved on the periphery of the pipe column to be extracted and continue to move downward. The initial pin convex second 65 is engaged with the vertical In the guide groove, after the centering sleeve 8 has not descended a sufficient distance, the cam rod 84 does not deflect. After the centering sleeve 8 descends and is completely sleeved on the periphery of the pipe column to be extracted, the pin protrusion 65 is clamped into the spiral guide groove by the vertical guide groove, thereby driving the cam rod 84 to deflect, and cooperating with the synchronous deflection of the cam rod 84 in four directions to squeeze the pipe column, so as to facilitate automatic control of the semi-clamp 63 and the pipe column for fine-tuning the centering when the centering frame 5 is not fixed. The centering is convenient and accurate, which ensures that the subsequent semi-clamp 63 can clamp the pipe column once and for all, and reduces the lifting power consumption.

[0037] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrically driven energy storage workover rig, comprising a workover frame (2), characterized in that: The left side of the derrick (2) is fixedly connected with two sliding rods (22), a centering plate (3) capable of being lifted up and down is slidably sleeved between the sliding rods (22), the inner wall of the centering plate (3) is rotatably connected with a rotating ring (4), a sliding frame (41) is fixedly connected in the rotating ring (4), a centering frame (5) is slidably clamped in the middle of the sliding frame (41), a hanging head (6) is ball-hinged at the bottom of the centering frame (5), a clamping ring (7) is rotatably connected to the lower wall of the centering frame (5), a U-shaped guide plate (71) movably clamped with the hanging head (6) is fixedly connected at the bottom of the clamping ring (7), a swing control component for locking the hanging head (6) and the U-shaped guide plate (71) is provided in the centering frame (5), and a fixed component for locking the centering frame (5) and the swing control component is provided on the right side of the sliding frame (41); Two opening and closing half-clamping tubes (63) are arranged at the bottom of the suspension head (6), a centering sleeve (8) is slidably clamped on the outer wall of the half-clamping tube (63), a semicircular plug plate (82) is slidably plugged on the top of the centering sleeve (8), and cam rods (84) are rotatably connected to the inner walls of the front and rear sides of the centering sleeve (8).

2. The electrically driven energy storage workover rig according to claim 1, characterized in that: It also includes a well repair vehicle (1), wherein an energy storage mechanism (11) is installed at the bottom of the well repair vehicle (1), the well repair frame (2) is arranged at the rear of the well repair vehicle (1), the top of the inner cavity of the well repair frame (2) is rotatably connected to two pulleys (21), the bottom of the inner cavity of the well repair frame (2) is installed with a driving motor (23) and a power recovery mechanism (24), the output end of the driving motor (23) is provided with a steel wire rope (25) fixedly connected to the upper wall of the centering plate (3), and the steel wire rope (25) passes through the power recovery mechanism (24) and the two pulleys (21).

3. The electrically driven energy storage workover rig according to claim 2, characterized in that: The fixing assembly comprises a spiral groove rod (42) rotatably connected to the upper side of the sliding frame (41); a top cavity wall of the centering frame (5) is provided with a protrusion (51) movably engaged with the spiral groove rod (42); two friction plates (43) are fixedly sleeved on the right side of the spiral groove rod (42); a T-shaped abutment plate (46) sleeved on the spiral groove rod (42) is slidably engaged on the right side of the sliding frame (41); the T-shaped abutment plate (46) is located between the two friction plates (43); a telescopic cylinder (48) fixedly connected to the T-shaped abutment plate (46) is installed on the sliding frame (41); and a friction groove corresponding to the T-shaped abutment plate (46) is opened on the upper wall of the inner cavity of the centering plate (3).

4. The electrically driven energy storage workover rig according to claim 3, characterized in that: The swing control assembly comprises a chuck (52) slidably engaged with the inner wall of the centering frame (5); the bottom of the chuck (52) is slidably connected with an elastic pin (53) engaged with the suspension head (6); the top of the suspension head (6) is provided with a slot first adapted to the elastic pin (53); the chuck (52) is provided with a slide groove (55); the top of the inner cavity of the centering frame (5) is rotatably connected with a crank tube (56) movably engaged with the slide groove (55); A guide rod (44) is rotatably connected to the lower side of the slide frame (41), and the guide rod (44) is slidably engaged with the inner wall of the crank tube (56). A guide groove (45) is provided on the right side of the guide rod (44), and a pin protrusion (47) movably engaged with the guide groove (45) is provided on the bottom cavity wall of the T-shaped abutment plate (46).

5. The electrically driven energy storage workover rig according to claim 4, characterized in that: The guide groove 1 (45) is composed of a combination of a straight guide groove and an arc guide groove that are connected.

6. The electrically driven energy storage workover rig according to claim 5, characterized in that: The outer wall of the clamping ring (7) is provided with a friction groove, and the left and right sides of the lower wall of the chuck (52) are fixedly connected with L-shaped abutment plates (54), and the L-shaped abutment plates (54) movably pass through the lower wall of the centering frame (5) and can abut against the upper and lower walls of the friction groove.

7. The electrically driven energy storage workover rig according to claim 6, characterized in that: The bottom of the suspension head (6) is rotatably connected to two mutually meshing tooth racks (61), a second telescopic cylinder (62) is movably hinged between the tooth racks (61), the semi-clamping tube (63) is fixedly connected to the bottom of the tooth rack (61), and the inner wall of the semi-clamping tube (63) is fixedly connected to a friction interlayer (64).

8. The electrically driven energy storage workover rig according to claim 7, characterized in that: A T-shaped elastic column (81) is slidably inserted on the top of the centering sleeve (8), and a second clamping groove adapted to the T-shaped elastic column (81) is provided on the outer wall of the semi-clamp tube (63). An arc groove (83) movably engaged with the T-shaped elastic column (81) is provided on the semicircular plug plate (82), and the arc grooves (83) on both sides are arranged in a circular array. A semicircular groove adapted to the semicircular plug plate (82) is provided on the top of the centering sleeve (8).

9. The electrically driven energy storage workover rig according to claim 8, characterized in that: The cam rod (84) is provided with a second guide groove (85), the second guide groove (85) being composed of a combination of a spiral guide groove and a vertical guide groove that are connected to each other. The outer wall of the semi-clamp tube (63) is provided with a second pin protrusion (65) that is movably engaged with the vertical guide groove. The bottom of the semi-clamp tube (63) is provided with a through groove corresponding to the centering sleeve (8) and the cam rod (84).

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