An automatic oil well repairing device

Abstract

An oil well automatic workover device, a middle part of a car chassis is provided with a mounting frame, an oil pipe collecting and releasing frame is arranged on one side of the mounting frame of the car chassis, an oil rod collecting and releasing frame is arranged on the other side of the mounting frame, a derrick is arranged at a tail part of the car chassis, a pipe transmission frame matched with the oil pipe collecting and releasing frame is arranged on one side of the bottom of the derrick, an oil rod transmission frame matched with the oil rod collecting and releasing frame is arranged on the other side of the bottom of the derrick, an aerial pipe transmission manipulator matched with the pipe transmission frame is arranged on one side of the middle part of the derrick, an aerial rod transmission manipulator matched with the oil rod transmission frame is arranged on the other side of the middle part of the derrick, a pipe clamping sleeve is connected through a lifting mechanism between the aerial pipe transmission manipulator and the aerial rod transmission manipulator at the rear side of the oil well, a fall protector matched with the pipe clamping sleeve is arranged on the well mouth, a blowout preventer is arranged on the well mouth at the bottom of the fall protector, and a hydraulic clamp matched with the pipe clamping sleeve is arranged on the derrick above the fall protector.

Description

Technical Field

[0001] This invention belongs to the field of petroleum production equipment technology, specifically relating to an automatic well workover device for oil wells. Background Technology

[0002] To maintain stable production in oil wells that have been in operation for many years, the workload of well workover operations is increasing. In both major and minor well workovers of oil, water, and gas wells, the running-in and running-out of tubing constitutes a significant portion of the overall maintenance process. Currently, a typical well workover team has an average of about 40 people, working in three shifts of 5-8 people per shift. During running-in and running-out of tubing, manual hydraulic tongs are commonly used for uncoupling, and double-clamping machines are used for both. Workers at the wellhead operate these machines. A single shift needs to run in and out of over 200 couplings. During uncoupling, sometimes the tightest couplings require 48-inch wrenches, plus a lever, and three or four people to loosen them. Clamping machines weighing tens of kilograms also require over 200 back-and-forth movements. This results in high labor intensity and low work efficiency. Therefore, mechanizing the running-in and running-out of tubing operations as soon as possible to significantly improve efficiency is an urgent problem that needs to be solved. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automatic well repair device for oil wells that is reasonably designed, highly efficient, saves manpower, is safe and reliable, and has a high degree of automation.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: an automatic well workover device for oil wells, wherein an installation frame is set on the middle of a vehicle chassis, a tubing retraction and deployment frame is set on one side of the installation frame on the vehicle chassis, a sucker rod retraction and deployment frame is set on the other side of the installation frame, a derrick is set on the rear of the vehicle chassis, a tubing transfer frame that cooperates with the tubing retraction and deployment frame is set on one side of the bottom of the derrick, a rod transfer frame that cooperates with the sucker rod retraction and deployment frame is set on the other side, an aerial tubing transfer manipulator that cooperates with the tubing transfer frame is set on one side of the middle of the derrick, an aerial rod transfer manipulator that cooperates with the rod transfer frame is set on the other side, a tubing clamp sleeve is connected to the rear of the oil well between the aerial tubing transfer manipulator and the aerial rod transfer manipulator through a lifting mechanism, a fall arrestor that cooperates with the tubing clamp sleeve is set on the oil wellhead, a blowout preventer is set on the oil wellhead at the bottom of the fall arrestor, and a hydraulic clamp that cooperates with the tubing clamp sleeve is set on the derrick above the fall arrestor.

[0005] As a preferred technical solution, one side of the vehicle chassis is provided with a tube rack that cooperates with the sucker rod retraction rack, and the other side is provided with a rod rack that cooperates with the sucker rod retraction rack.

[0006] As a preferred technical solution, the base of the tube rack consists of a first side bracket and a second side bracket with the same structure along the length of the oil pipe, placed side by side. A pipe hook is provided on the upper part of the end of the first side bracket closest to the vehicle chassis. The angle between the bottom surface of the first side bracket and the bottom surface of the other side is 170° to 175° with the midpoint line as the dividing line. An automatic lifting mechanism is provided at each end of the first side bracket. The automatic lifting mechanism is a third hydraulic cylinder whose base is set on the first side bracket and whose power end is set on the ground through a ball and a ball seat.

[0007] As a preferred technical solution, the rod holder consists of at least two supporting structures placed side by side along the length of the sucker rod. Each supporting structure has a lever mechanism at the top and a lifting platform at the bottom. The lever mechanism is a mounting base mounted on the upper part of the supporting frame via a vertical guide rail slider mechanism. A first electric push rod is mounted on the supporting frame above the mounting base, and the power end of the first electric push rod is fixedly connected to the mounting base. A sprocket and chain mechanism and a third motor are mounted on the mounting base directly above the lifting platform. A lever is mounted on the chain of the sprocket and chain mechanism. The lifting platform is a rod placement platform with a first hydraulic cylinder and a second hydraulic cylinder mounted at the bottom of both ends.

[0008] As a preferred technical solution, the sucker rod retraction frame comprises: a rotating shaft between the upper ends of the rear support and the front support; a fourth motor fixedly mounted on the front support, the power end of the fourth motor connected to the rotating shaft; a first drive sprocket fixedly mounted on the rear side and a second drive sprocket fixedly mounted on the front side of the rotating shaft; a first driven sprocket mounted on the lower end of the rear support; a second driven sprocket mounted on the lower end of the front support; a first chain mounted on the first drive sprocket and the first driven sprocket; a first tubing hook hinged to the first chain; and a second chain mounted on the second drive sprocket and the second driven sprocket; a second sucker rod hook hinged to the second chain. The tubing retraction frame and the sucker rod retraction frame have the same structure.

[0009] As a preferred technical solution, the rod transfer frame consists of a fourth hydraulic cylinder and a rod seat with an arc-shaped inner surface hinged to the derrick. The power end of the fourth hydraulic cylinder is hinged to the lower part of the rod seat. When the rod seat is in a horizontal state, a transfer slide plate is provided on the side near the rod extension / retraction frame. Rod guides are provided at both ends of the rod seat, and a pair of rod lockers and a pair of rod pushers are provided on the rod seat between the rod guides. The rod locker consists of a third electric push rod mounted on a fixed base, with a scissor-type rod lock gripper hinged to the power end of the third electric push rod. The fixed base is located at the bottom outer side of the rod seat, and the rod lock gripper extends into... The rod guide is installed inside the rod holder; the rod guide consists of a rod guide motor and a drive shaft mounted on a first mounting plate and a second mounting plate. A main gear is mounted on the power end of the rod guide motor, and a secondary gear meshing with the main gear is mounted on the drive shaft. Two conical wheels with opposite small ends are fixed in the middle of the drive shaft. The sides of the conical wheels are arc-shaped surfaces with the center facing outwards. The first and second mounting plates are located outside the rod holder, and the two conical wheels extend into the rod holder. The push rod device is an electric push rod, and the power end of the electric push rod extends into the rod holder through the mounting hole at the bottom of the rod holder. The oil pipe transfer frame has the same structure as the rod transfer frame.

[0010] As a preferred technical solution, the aerial rod transfer manipulator is as follows: the base of the boom is hinged to the derrick, and a first motor that drives the boom to rotate is installed on the derrick; a forearm is hinged to the end of the boom, and a second motor that drives the forearm to rotate is installed at the end of the boom; a second electric push rod is installed on the forearm, and a gripper is hinged to the power end of the second electric push rod; the aerial pipe transfer manipulator has the same structure as the aerial rod transfer manipulator.

[0011] As a preferred technical solution, the lifting mechanism includes a winch, a guide rail, a sliding plate, and a fixed pulley. The winch is installed on the positioning vehicle chassis, the fixed pulley is installed on the top of the derrick, the guide rail is installed vertically on the rear side of the derrick, the sliding plate is installed on the guide rail, the sliding plate is fixedly connected to the clamp sleeve, and the wire rope of the winch passes around the fixed pulley and is fixedly connected to the sliding plate.

[0012] The beneficial effects of this invention are as follows:

[0013] This invention enables automatic replacement of oil rods or oil pipes, significantly reducing manpower, lowering labor intensity, and improving work efficiency. The derrick of this invention is installed on a car chassis, making it easy to move, saving construction time, and is safe and reliable, making it especially suitable for promotion and use in remote areas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a rear view of the present invention.

[0016] Figure 3 This is a structural schematic diagram of the code tube rack 17.

[0017] Figure 4 This is a side view of the code tube rack 17.

[0018] Figure 5 This is a structural schematic diagram of the rack frame 12.

[0019] Figure 6 This is a side view of the rack 12.

[0020] Figure 7 This is a schematic diagram of the sucker rod retraction frame 10.

[0021] Figure 8 yes Figure 7 The left view.

[0022] Figure 9 This is a schematic diagram of the structure of the oil rod transfer frame 7.

[0023] Figure 10 yes Figure 9 AA sectional view.

[0024] Figure 11 This is a structural schematic diagram of the locking lever 7-5.

[0025] Figure 12 This is a structural schematic diagram of the rod feeder 7-3.

[0026] Figure 13 This is an installation diagram of the rod organizer 7-3.

[0027] Figure 14 This is an installation diagram of the aerial rod-transfer manipulator 13 and the aerial pipe-transfer manipulator 14.

[0028] Figure 15 This is a structural schematic diagram of the aerial lever manipulator 13. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments.

[0030] exist Figure 1 , 2 In this embodiment, an automatic well workover device for oil wells is constructed by connecting a blowout preventer 1, a fall arrestor 2, hydraulic tongs 3, a pipe clamping sleeve 4, a sliding plate 5, a guide rail 6, a rod transfer frame 7, a fixed pulley 8, a derrick 9, a sucker rod retraction frame 10, a truck chassis 11, a rod stacking frame 12, an aerial rod transfer manipulator 13, an aerial pipe transfer manipulator 14, a tubing transfer frame 15, a sucker rod retraction frame 16, a pipe stacking frame 17, and a winch 18. For further detailed explanation of the invention, the direction of travel of the truck is defined as forward.

[0031] A mounting bracket is fixedly installed on the upper middle part of the vehicle chassis 11 with threaded fasteners. A sucker rod retraction bracket 16 is fixedly installed on the left mounting bracket of the vehicle chassis 11 with threaded fasteners, and a sucker rod retraction bracket 10 is fixedly installed on the right mounting bracket with threaded fasteners. A winch 18 is installed in the middle of the mounting bracket. A derrick 9 is fixedly installed at the rear of the vehicle chassis 11 with threaded fasteners. A tubing transfer bracket 15, which mates with the sucker rod retraction bracket 16, is installed on the left bottom of the derrick 9, and a tubing transfer bracket 15, which mates with the sucker rod retraction bracket 10, is installed on the right bottom. The rod transfer frame 7, which is matched with the rod transfer frame 10, has a fixed pulley 8 fixedly installed on the top. On the upper left side of the derrick 9, there is an aerial tubing transfer manipulator 14 that matches the tubing transfer frame 15, and on the right side, there is an aerial rod transfer manipulator 13 that matches the rod transfer frame 7. A sliding plate 5 is connected to the rear side of the well via a guide rail 6 between the aerial tubing transfer manipulator 14 and the aerial rod transfer manipulator 13. A pipe clamping sleeve 4 is fixedly connected to the lower part of the sliding plate 5. The pipe clamping sleeve 4 has a semi-circular tube at the lower end of the casing. A clamping ring is fitted onto the casing. An electric actuator is fixedly installed on the casing above the semi-circular tube. The power end of the electric actuator is fixedly connected to the clamping ring. The electric actuator is used to control the up and down movement of the clamping ring. When the clamping ring is at the lower end of the casing, it is in a locked state; when the clamping ring is at the upper end of the semi-circular tube of the casing, it is in a relaxed state. The wire rope of the winch 18 passes over the fixed pulley 8 and is fixedly connected to the sliding plate 5. The winch 18 controls the up and down movement of the pipe clamping sleeve 4 through the wire rope. A fall arrestor is installed on the wellhead to cooperate with the pipe clamping sleeve 4. Device 2, the fall arrestor 2 is used to prevent the pipeline from falling during installation. A blowout preventer 1 is installed on the bottom of the wellhead of the fall arrestor 2. The blowout preventer 1 is used to prevent fire during well workover. A hydraulic clamp 3 that cooperates with the pipe clamp sleeve 4 is installed on the derrick 9 above the fall arrestor 2. The hydraulic clamp 3 is a commercially available product, model XQ29 / 1.8A. The hydraulic clamp 3 is used to grip the oil pipe or oil rod and rotate it during the replacement of the oil pipe or oil rod, thereby achieving the purpose of replacing the oil pipe or oil rod.

[0032] Hydraulic rod replacement:

[0033] When it is necessary to lift the oil rod located in the oil well, before the operation, first install the blowout preventer 1 and the rod locker 7-5 on the tubing. After the preparation work is completed, the winch 18 controls the pipe clamp 4 to move downward and clamp onto the oil rod located in the oil well. The winch 18 controls the pipe clamp 4 to move upward and lift the oil rod. When the oil rod is fully lifted, the hydraulic clamp 3 grips the oil rod and rotates it. The lower end of the oil rod is released from the threaded connection of the oil well. The aerial rod transfer manipulator 13 grips the oil rod, the pipe clamp 4 releases the oil rod, and the aerial rod transfer manipulator 13 transfers the oil rod to the oil rod transfer frame 7. The oil rod transfer frame 7 changes the oil rod from a vertical state to a horizontal state and transports it to the sucker rod take-up and drop frame 10. The sucker rod take-up and drop frame 10 transports the oil rod to the rod stacking frame 12. The oil rod lifting is completed.

[0034] When a new rod needs to be installed back into the well, the rod take-up and drop-down frame 10 takes a rod from the rod holder 12. At this time, the rod transfer frame 7 is in a horizontal position and is located above the rod take-up and drop-down frame 10, docking with the rod take-up and drop-down frame 10. The rod take-up and drop-down frame 10 transports the rod to the rod transfer frame 7. The rod transfer frame 7 changes the rod from a horizontal position to a vertical position. The aerial rod transfer manipulator 13 holds the vertical rod and transfers it directly below the tube clamp 4. The winch 18 controls the tube clamp 4 to move downward and clamp onto the rod. The aerial rod transfer manipulator 13 releases and resets. The winch 18 controls the tube clamp 4 to continue moving downward so that the rod is inserted into the well. The tube clamp 4 releases the rod, and at the same time, the hydraulic clamp 3 grips the rod and rotates it to install the rod into the well. After installation, the hydraulic clamp 3 is released, and the rod installation is complete.

[0035] Oil pipe replacement:

[0036] When it is necessary to lift the tubing located in the well, the winch 18 controls the tubing clamp 4 to move downward and clamp onto the tubing located in the well. The winch 18 then controls the tubing clamp 4 to move upward and lift the tubing. When the tubing is fully lifted, the hydraulic clamp 3 grips the tubing and rotates it to loosen the lower end of the tubing from the threaded connection of the well. The aerial tubing transfer manipulator 14 grips the tubing, the tubing clamp 4 releases the tubing, and the aerial transfer manipulator 13 transfers the tubing to the tubing transfer frame 15. The tubing transfer frame 15 changes the tubing from a vertical state to a horizontal state and transports it to the tubing take-up and drop-down frame. The tubing take-up and drop-down frame then transports the tubing to the tubing stacking frame 17.

[0037] When a new tubing needs to be installed back into the well, the tubing take-up rack 16 takes a tubing from the rod holder 12. At this time, the tubing transfer rack 15 is in a horizontal position and is located above the tubing take-up rack 16, connecting with the tubing take-up rack 16. The tubing take-up rack 16 transports the tubing to the tubing transfer rack 15, which changes the tubing from a horizontal position to a vertical position. The aerial rod transfer manipulator 13 grasps the vertical tubing and transfers it directly below the tubing clamp 4. The winch 18 controls the tubing clamp 4 to move downward and clamp onto the tubing. The aerial rod transfer manipulator 13 releases and resets. The winch 18 controls the tubing clamp 4 to continue moving downward so that the tubing is inserted into the well. The tubing clamp 4 releases the tubing, and at the same time, the hydraulic clamp 3 grips the tubing and rotates it to install the tubing into the well. After installation, the hydraulic clamp 3 releases, and the tubing installation is complete.

[0038] exist Figure 3 , 4 In this embodiment, the tube rack 17 is composed of a first side support 17-1, a second side support 17-2, a ball seat 17-3, a third hydraulic cylinder 17-4, a ball 17-5, and a tube hook 17-6 connected together.

[0039] The first side bracket 17-1 and the second side bracket 17-2, which have the same structure, are placed side by side along the length of the sucker pipe. The upper part of the first side bracket 17-1, which is closer to the vehicle chassis 11, is equipped with a pipe hook 17-6. The pipe hook 17-6 is used to receive the oil pipe or place the oil pipe on the sucker pipe take-up and drop rack 16. The angle between the bottom surface of the first side bracket 17-1 and the bottom surface of the other side, with the midpoint line as the dividing line, is 170° to 175°. An automatic lifting mechanism is installed at the end of the first side bracket 17-1 that is closer to the vehicle chassis 11 and at the end that is farther away from the vehicle chassis 11. The automatic lifting mechanism is that the base of the third hydraulic cylinder 17-4 is fixedly installed on the first side bracket 17-1, and the power end is fixedly installed on the ground through the ball 17-5 and the ball seat 17-3. The second side bracket 17-2 has the same structure as the first side bracket 17-1.

[0040] When receiving the oil pipe, the third hydraulic cylinder 17-4 of the first side bracket 17-1 and the second side bracket 17-2 near the end of the vehicle chassis 11 is raised, making the end of the first side bracket 17-1 and the second side bracket 17-2 near the vehicle chassis 11 higher than the other end. When the oil pipe take-up and drop rack 16 places the oil pipe on the connecting hook 17-6, the oil pipe automatically rolls to the other end to achieve automatic pipe stacking. When one layer of oil pipe is laid, two oil pipes with a certain distance between them are placed vertically on the oil pipe for placing the next layer of oil pipe. When the oil pipe is placed on the oil pipe take-up and drop rack 16, the third hydraulic cylinder 17-4 of the first side bracket 17-1 and the second side bracket 17-2 away from the vehicle chassis 11 lifts up, and the third hydraulic cylinder 17-4 near the vehicle chassis 11 returns to its original position, so that the ends of the first side bracket 17-1 and the second side bracket 17-2 away from the vehicle chassis 11 are higher than the ends near the vehicle chassis 11. After one oil pipe is taken away by the oil pipe take-up and drop rack 16, the next oil pipe automatically rolls onto the pipe hook 17-6.

[0041] exist Figure 5 , 6 In this embodiment, the code rod frame 12 is composed of a support frame 12-1, a third motor 12-2, a mounting base 12-3, a sprocket and chain mechanism 12-4, a first electric push rod 12-5, a guide rail slider mechanism 12-6, a lever 12-7, an oil rod placement platform 12-8, a first hydraulic cylinder 12-9, and a second hydraulic cylinder 12-10.

[0042] Three support structures are placed side by side along the length of the sucker rod. The support structure consists of a support frame 12-1 with a lever mounted on the upper part and a lifting platform mounted on the lower part. The lever is a mounting base 12-3 mounted on the upper part of the support frame 12-1 via a vertical guide rail slider mechanism 12-6. A first electric push rod 12-5 is fixedly mounted on the support frame 12-1 above the mounting base 12-3. The power end of the first electric push rod 12-5 is fixedly connected to the mounting base 12-3, controlling the vertical movement of the mounting base 12-3. The first electric push rod 12-5 is located directly above the lifting platform. The system is equipped with a sprocket and chain mechanism 12-4 and a third motor 12-2. The third motor 12-2 drives the sprocket and chain mechanism 12-4 to rotate. A lever 12-7 is fixedly installed on the chain of the sprocket and chain mechanism 12-4. The lever 12-7 is used to move the hydraulic rod on the lifting platform. The lifting platform is a hydraulic rod placement platform 12-8. A first hydraulic cylinder 12-9 is installed at the bottom of the end near the car chassis 11, and a second hydraulic cylinder 12-10 is installed at the bottom of the end away from the car chassis 11. The height of the two ends of the hydraulic rod placement platform 12-8 is controlled by the first hydraulic cylinder 12-9 and the second hydraulic cylinder 12-10. When receiving the sucker rod, the power end of the first hydraulic cylinder 12-9 extends to a suitable position, so that the end of the sucker rod placement platform 12-8 near the vehicle chassis 11 is higher than the end away from the vehicle chassis 11. The sucker rods delivered by the sucker rod retractor 10 are moved onto the sucker rod placement platform 12-8 by the lever 12-7. Due to the height difference between the two ends of the sucker rod placement platform 12-8, the sucker rods automatically roll to the end of the sucker rod placement platform 12-8 away from the vehicle chassis 11. The sucker rods on the sucker rod placement platform 12-8 are closely arranged. When the sucker rod placement platform 12-8 is covered with a layer of sucker rods, two oil pipes with a certain distance between them are placed vertically on the oil pipes for placement. One layer of oil pipe is laid, and at the same time, the first electric push rod 12-5 drives the mounting base 12-3 to rise to a suitable position to start laying the next layer of oil rods; when it is necessary to place the oil rods on the sucker rod take-up and drop rack 10, the power end of the second hydraulic cylinder 12-10 extends to a suitable position, so that the end of the oil rod placement platform 12-8 away from the car chassis 11 is higher than the end close to the car chassis 11. Due to the height difference between the two ends of the oil rod placement platform 12-8, the lever 12-7 moves the oil rod, and the oil rod automatically rolls onto the sucker rod take-up and drop rack 10. When the previous oil rod is taken away, the next oil rod rolls to the end close to the car chassis 11 under the action of the lever 12-7.

[0043] exist Figure 7 , 8In this embodiment, the sucker rod retractor 10 is composed of a first drive sprocket 10-1, a rotating shaft 10-2, a second drive sprocket 10-3, a fourth motor 10-4, a second chain 10-5, a front bracket 10-6, a second driven sprocket 10-7, a first driven sprocket 10-8, a first chain 10-9, a rear bracket 10-10, a first sucker rod hook 10-11, and a second sucker rod hook 10-12.

[0044] A rotating shaft 10-2 is installed between the upper end of the rear bracket 10-10 and the upper end of the front bracket 10-6. A fourth motor 10-4 is fixedly installed on the front bracket 10-6. The power end of the fourth motor 10-4 is fixedly connected to the rotating shaft 10-2. The fourth motor 10-4 drives the rotating shaft 10-2 to rotate. A first drive sprocket 10-1 is fixedly installed on the rear side of the rotating shaft 10-2, and a second drive sprocket 10-3 is fixedly installed on the front side. A first driven sprocket 10-8 is installed on the lower end of the rear bracket 10-10, and a second driven sprocket 10-7 is installed on the lower end of the front bracket 10-6. A first chain 10-9 is installed on the first drive sprocket 10-1 and the first driven sprocket 10-8. A hinge is mounted on the first chain 10-9. A first oil pipe hook 10-11 is attached. A second chain 10-5 is mounted on the second drive sprocket 10-3 and the second driven sprocket 10-7. A second oil rod hook 10-12 is hinged to the second chain 10-5. The first oil pipe hook 10-11 and the second oil rod hook 10-12 are used to transport the oil rod. A fourth motor 10-4 drives the rotating shaft 10-2 to rotate. The rotating shaft 10-2 drives the first drive sprocket 10-1 and the second drive sprocket 10-3 to rotate. At the same time, it drives the first chain 10-9 and the second chain 10-5 to move. The first oil pipe hook 10-11 located on the first chain 10-9 and the second oil rod hook 10-12 located on the second chain 10-5 move up and down synchronously. When the oil rod is transferred from the oil rod transfer frame 7, the first oil pipe hook 10-11 and the second oil rod hook 10-12 are above the rotating shaft 10-2 and exchange oil rods with the oil rod transfer frame 7. After receiving the oil rod, the first oil pipe hook 10-11 and the second oil rod hook 10-12 move downwards to the position of the bar rack 12 and exchange oil rods with the bar rack 12. When it is necessary to remove the oil rod from the bar rack 12, the first oil pipe hook 10-11 and the second oil rod hook 10-12 are lower than the position of the outermost oil rod on the bar rack 12 and the ends of the two hooks extend to the position between the outermost oil rod and the oil rod adjacent to the outermost oil rod. The rotating shaft 10-2 drives the first oil pipe hook 10-11 and the second oil rod hook 10-12 to move upwards, thus hooking the outermost oil rod on the bar rack 12 and moving it upwards, thus successfully removing the oil rod.

[0045] In this embodiment, the tubing retractor 16 and the sucker rod retractor 10 have the same structure.

[0046] exist Figures 9-13In this embodiment, the hydraulic rod transfer frame 7 is composed of a hydraulic rod seat 7-1, a fourth hydraulic cylinder 7-2, a rod handler 7-3, a rod pusher 7-4, a rod locker 7-5, and a transfer slide plate 7-6.

[0047] A fourth hydraulic cylinder 7-2 and a rod holder 7-1 with an arc-shaped inner surface are hinged to the derrick 9. The power end of the fourth hydraulic cylinder 7-2 is hinged to the lower part of the rod holder 7-1. When the rod holder 7-1 is in a horizontal state, a pair of transfer slide plates 7-6 are fixedly installed near the side of the sucker rod retraction frame 10. The surface of the transfer slide plates 7-6 is arc-shaped to facilitate the sliding of the rod out or in from the rod holder 7-1. Rod guides 7-3 are installed at both ends of the rod holder 7-1 to adjust the position of the rod. The rod guides 7-3 are the first mounting plate 7-3-1 and... The second mounting plate 7-3-3 is equipped with a rod-maintenance motor 7-3-2 and a drive shaft 7-3-6. A main gear 7-3-4 is mounted on the power end of the rod-maintenance motor 7-3-2, and a secondary gear meshing with the main gear 7-3-4 is mounted on the drive shaft 7-3-6. Two conical wheels 7-3-7 with their small ends facing each other are fixed in the middle of the drive shaft 7-3-6. The sides of the conical wheels 7-3-7 are arc-shaped surfaces with the center facing outwards. The first mounting plate 7-3-1 and the second mounting plate 7-3-3 are located outside the oil rod seat 7-1. The two conical wheels... Wheel 7-3-7 extends into the rod holder 7-1. The rod being adjusted is located between the two tapered wheels 7-3-7. A pair of rod locking devices 7-5 and a pair of rod pushers 7-4 are installed on the rod holder 7-1 between the rod handlers 7-3. The rod locking devices 7-5 are used to fix the rod to the rod holder 7-1. A third electric push rod 7-5-1 is set on the fixed seat 7-5-2. A scissor-type rod locking gripper 7-5-3 is hinged to the power end of the third electric push rod 7-5-1. The fixed seat 7-5-2 is fixedly installed on the rod holder 7-5-2. At the bottom of the rod holder 7-1, the rod locking gripper 7-5-3 extends into the rod holder 7-1 to hold the rod. The push rod device 7-4 is an electric push rod. The power end of the push rod device 7-4 extends into the rod holder 7-1 through the mounting hole at the bottom of the rod holder 7-1. When it is necessary to transfer the rod on the rod holder 7-1 to the sucker rod retractor 10, the power end of the electric push rod extends out and pushes the rod out of the rod holder 7-1 and slides it onto the first tubing hook 10-11 and the second rod hook 10-12 of the sucker rod retractor 10 via the transfer slide plate 7-6.

[0048] In this embodiment, the tubing transfer frame 15 has the same structure as the rod transfer frame 7.

[0049] exist Figure 14 and 15In this embodiment, the aerial boom manipulator 13 is composed of a first motor 13-1, a large arm 13-2, a second motor 13-3, a second electric push rod 13-4, a small arm 13-5, and a gripper 13-6. The base of the large arm 13-2 is hinged to the derrick 9, and the first motor 13-1, which drives the large arm 13-2 to rotate, is fixedly installed on the derrick 9. The small arm 13-5 is hinged to the end of the large arm 13-2, and the second motor 13-3, which drives the small arm 13-5 to rotate, is fixedly installed at the end of the large arm 13-2. The second electric push rod 13-4 is fixedly installed on the small arm 13-5, and the gripper 13-6 is hinged to the power end of the second electric push rod 13-4. The second electric push rod 13-4 controls the opening or closing action of the gripper 13-6.

[0050] The aerial pipe-transfer manipulator 14 in this embodiment has the same structure as the aerial rod-transfer manipulator 13.

Claims

1. An automatic well workover device for oil wells, characterized in that: A mounting bracket is provided on the upper middle part of the vehicle chassis (11). A sucker pipe retraction bracket (16) is provided on one side of the mounting bracket on the vehicle chassis (11), and a sucker rod retraction bracket (10) is provided on the other side of the mounting bracket. A derrick (9) is provided at the upper rear of the vehicle chassis (11). A tubing transfer bracket (15) that cooperates with the sucker pipe retraction bracket (16) is provided on one side of the bottom of the derrick (9), and a rod transfer bracket (7) that cooperates with the sucker rod retraction bracket (10) is provided on the other side. A rod transfer bracket (7) that cooperates with the tubing transfer bracket (15) is provided on one side of the upper middle part of the derrick (9). The well is equipped with an aerial pipe transfer manipulator (14) and an aerial rod transfer manipulator (13) that works with the rod transfer frame (7). A pipe clamp sleeve (4) is connected to the well via a lifting mechanism between the aerial pipe transfer manipulator (14) and the aerial rod transfer manipulator (13). A fall arrestor (2) that works with the pipe clamp sleeve (4) is installed on the wellhead. A blowout preventer (1) is installed on the wellhead at the bottom of the fall arrestor (2). A hydraulic clamp (3) that works with the pipe clamp sleeve (4) is installed on the derrick (9) above the fall arrestor (2). The sucker rod retractor (10) comprises: a rotating shaft (10-2) between the upper end of the rear support (10-10) and the upper end of the front support (10-6); a fourth motor (10-4) fixed on the front support (10-6); the power end of the fourth motor (10-4) connected to the rotating shaft (10-2); a first drive sprocket (10-1) fixed on the rear side and a second drive sprocket (10-3) fixed on the front side of the rotating shaft (10-2); a first driven sprocket (10-8) fixed at the lower end of the rear support (10-10); and a first driven sprocket (10-8) fixed on the lower end of the front support (10-10). 6) A second driven sprocket (10-7) is provided at the lower end. A first chain (10-9) is provided on the first driving sprocket (10-1) and the first driven sprocket (10-8). A first tubing hook (10-11) is hinged on the first chain (10-9). A second chain (10-5) is provided on the second driving sprocket (10-3) and the second driven sprocket (10-7). A second rod hook (10-12) is hinged on the second chain (10-5). The tubing retraction frame (16) and the rod retraction frame (10) have the same structure.

2. The automatic well workover device according to claim 1, characterized in that: The vehicle chassis (11) is provided with a tube rack (17) that cooperates with the sucker rod retraction rack (16) on one side and a rod rack (12) that cooperates with the sucker rod retraction rack (10) on the other side.

3. The automatic well workover device according to claim 2, characterized in that, The bottom of the code tube frame (17) consists of a first side bracket (17-1) and a second side bracket (17-2) with the same structure along the length of the oil pipe, placed side by side. The upper part of the first side bracket (17-1) near the car chassis (11) is provided with a pipe hook (17-6). The angle between the bottom surface of the first side bracket (17-1) and the bottom surface of the other side with the midpoint line as the dividing line is 170° to 175°. Each end of the first side bracket (17-1) is provided with an automatic lifting mechanism. The automatic lifting mechanism is that the base of the third hydraulic cylinder (17-4) is set on the first side bracket (17-1), and the power end is set on the ground through a ball and ball seat (17-3).

4. The automatic well workover device according to claim 2, characterized in that: The lever frame (12) consists of at least two support structures placed side by side along the length of the sucker rod. The support structure is a support frame (12-1) with a lever mechanism on the upper part and a lifting platform on the lower part. The lever mechanism is a mounting base (12-3) mounted on the upper part of the support frame (12-1) via a vertical guide rail slider mechanism (12-6). A first electric push rod (12-5) is mounted on the support frame (12-1) above the mounting base (12-3). The power end of the first electric push rod (12-5) is fixedly connected to the mounting base (12-3). A sprocket and chain mechanism (12-4) and a third motor (12-2) are mounted on the mounting base (12-3) directly above the lifting platform. A lever (12-7) is mounted on the chain of the sprocket and chain mechanism (12-4). The lifting platform is a sucker rod placement platform (12-8) with a first hydraulic cylinder (12-9) and a second hydraulic cylinder (12-10) mounted at the bottom of both ends.

5. The automatic well workover device according to claim 1, characterized in that: The rod transfer frame (7) is a derrick (9) with a fourth hydraulic cylinder (7-2) and a rod seat (7-1) with an arc-shaped inner surface, hinged on it. The power end of the fourth hydraulic cylinder (7-2) is hinged to the lower part of the rod seat (7-1). When the rod seat (7-1) is in a horizontal state, a transfer slide plate (7-6) is provided on the side near the rod retraction frame (10). Rod guides (7-3) are provided at both ends of the rod seat (7-1). The rod seat (7-1) is located between the rod guides (7-3). 7-1) is equipped with a pair of locking rod devices (7-5) and a pair of push rod devices (7-4); the locking rod device (7-5) is a fixed base (7-5-2) on which a third electric push rod (7-5-1) is mounted, and a scissor-type locking rod gripper (7-5-3) is hinged to the power end of the third electric push rod (7-5-1). The fixed base (7-5-2) is located at the bottom outside of the oil rod seat (7-1), and the locking rod gripper (7-5-3) extends into the oil rod seat (7-1); the rod guide The device (7-3) consists of a first mounting plate (7-3-1) and a second mounting plate (7-3-3). A rod-arranging motor (7-3-2) and a drive shaft (7-3-6) are mounted on the first mounting plate (7-3-1) and the second mounting plate (7-3-3). A main gear (7-3-4) is mounted on the power end of the rod-arranging motor (7-3-2). A secondary gear meshes with the main gear (7-3-4) on the drive shaft (7-3-6). Two conical wheels (7-3-7) with their small ends facing each other are fixed in the middle of the drive shaft (7-3-6). The side of 7-3-7 is an arc-shaped surface with the center facing outward. The first mounting plate (7-3-1) and the second mounting plate (7-3-3) are set on the outside of the oil rod seat (7-1). Two conical wheels (7-3-7) extend into the oil rod seat (7-1). The push rod device (7-4) is an electric push rod. The power end of the electric push rod extends into the oil rod seat (7-1) through the mounting hole at the bottom of the oil rod seat (7-1). The oil pipe transfer frame (15) has the same structure as the oil rod transfer frame (7).

6. The automatic well workover device according to claim 1, characterized in that, The aerial rod transfer manipulator (13) is as follows: the base of the boom (13-2) is hinged to the derrick (9), and a first motor (13-1) that drives the boom (13-2) to rotate is provided on the derrick (9). A forearm (13-5) is hinged to the end of the boom (13-2), and a second motor (13-3) that drives the forearm (13-5) to rotate is provided at the end of the boom (13-2). A second electric push rod (13-4) is provided on the forearm (13-5), and a gripper (13-6) is hinged to the power end of the second electric push rod (13-4). The aerial pipe transfer manipulator (14) has the same structure as the aerial rod transfer manipulator (13).

7. The automatic well workover device according to claim 1, characterized in that, The lifting mechanism includes a winch (18), a guide rail (6), a sliding plate (5), and a fixed pulley (8). The winch (18) is installed on the positioning vehicle chassis (11), the fixed pulley (8) is installed on the top of the derrick (9), the guide rail (6) is installed vertically on the rear side of the derrick (9), the sliding plate (5) is installed on the guide rail (6), the sliding plate (5) is fixedly connected to the pipe sleeve (4), and the wire rope of the winch (18) passes around the fixed pulley (8) and is fixedly connected to the sliding plate (5).

Images