A detachable multifunctional automatic working platform for well repairing machine and working method thereof

Abstract

The present invention discloses a detachable multifunctional automatic working platform for a well repair rig, comprising a platform frame, wherein the four corners below the platform frame are respectively connected to outrigger oil cylinders, a sucker rod power tong and a tubing power tong are slidably connected to the platform frame, a grabbing mechanism and a straightener are arranged on the platform frame, a connecting seat is arranged below the platform frame, a slip is arranged on the connecting seat, and the platform frame is detachably connected to a vehicle on a main engine via a connecting pin. The present invention also discloses a working method for a detachable multifunctional automatic working platform for a well repair rig. The detachable multifunctional automatic working platform for a well repair rig and the working method thereof provided by the present invention can realize automated operation, greatly simplify the manpower allocation for well repair operations, improve construction efficiency, and at the same time ensure positioning accuracy.

Description

Technical Field

[0001] The invention relates to a detachable multifunctional automatic working platform of a well repair machine and a working method thereof, belonging to the technical field of fully automatic well repair machines. Background Art

[0002] Well repair is an important part of the construction of oil and gas exploration and development. Oil, gas and water wells may fail at any time during the process of self-flowing, pumping oil or injecting water or gas, causing the oil well to reduce production or even stop production. After the failure occurs, the normal production of the oil well can only be restored through downhole operations to eliminate the fault, replace equipment and adjust the oil well parameters. Well repair rigs, as mechanical equipment to complete the above operations, have been widely used in oil and gas well services for a long time.

[0003] Currently, the widely used workover rigs are mostly equipped with working devices such as shackle power tongs, slips, and elevators, but they mostly rely on manpower to achieve the positioning and use of the working devices, and various functions are not well integrated. In addition, the workload of manual labor is relatively large, and a large number of personnel are required. In addition, during the positioning and centering of the working device (centering at the wellhead), since most working platforms are fixedly connected to the main machine, the centering process mostly relies on the movement of the main machine for positioning, and the positioning mostly relies on experience, and the accuracy is difficult to guarantee. Some workover rigs equipped with a gripping mechanism mostly place the gripping mechanism on the frame, mast or independently, and require secondary centering during use, which greatly affects the construction efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a detachable multifunctional automatic working platform of a well repairing machine and a working method thereof, which can realize automated operation, greatly simplify the manpower allocation of well repairing operations, improve construction efficiency, and at the same time ensure positioning accuracy.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A detachable multifunctional automatic working platform for a well repair rig comprises a platform frame, wherein the four corners below the platform frame are respectively connected to outrigger oil cylinders, a sucker rod power tong and a tubing power tong are slidably connected to the platform frame, a grabbing mechanism and a centralizer are arranged on the platform frame, a connecting seat is arranged below the platform frame, a slip is arranged on the connecting seat, and the platform frame is detachably connected to a main engine upper vehicle via a connecting pin.

[0007] Four positioning plates are arranged on the platform frame, and the positioning plates are connected to the connecting seats via connecting pins.

[0008] A first slide and a first slide cylinder are provided on the platform frame, and the oil pipe power tongs are embedded in the first slide and connected to the first slide cylinder; a second slide and a second slide cylinder are provided on the platform frame, and the sucker rod power tongs are embedded in the second slide and connected to the second slide cylinder.

[0009] The platform frame is provided with a gripping structure mounting seat for mounting the gripping mechanism, and the gripping mechanism is mounted on the gripping structure mounting seat by bolts.

[0010] The platform frame is provided with lifting ears.

[0011] The slips are fixed to the connecting seat by bolts.

[0012] The connecting seat is connected to the wellhead blowout preventer through bolts, and the connecting seat is positioned through a pin shaft and a wellhead frame positioning plate.

[0013] The outrigger oil cylinder is installed under the platform frame through a pin shaft.

[0014] The centralizer is mounted on the platform frame by bolts.

[0015] A working method of a detachable multifunctional automatic working platform of a well repairing machine comprises the following steps:

[0016] When the equipment is transferred, the platform frame is fixed to the tail of the self-propelled workover rig by connecting pins and transported together. When arriving at the workover well site, the workover rig carrying the working platform is placed near the wellhead through the self-propelled function of the workover rig, and rough positioning is performed;

[0017] After rough positioning, the connecting seat is hoisted and installed on the wellhead blowout preventer group to achieve the positioning installation of the connecting seat;

[0018] Then, the connecting pin is pulled out to separate the platform frame from the workover rig body;

[0019] Lift the platform frame, align the platform frame with the connecting seat, connect and fix the platform frame and the connecting seat to achieve the positioning and installation of the platform frame, and use the outrigger cylinder to fix it to complete the centering work;

[0020] After positioning is completed, lift the slip and place it on the connecting seat to complete the positioning and installation of the slip;

[0021] When lifting the tubing and sucker rod, start the slips to grab them, use the breakout pliers to disassemble them, and then grab them with the grabbing mechanism and place them in the drill rod box. When lowering the sucker rod, grab them with the grabbing mechanism and position them at the wellhead, and use the breakout pliers and slips to install them respectively.

[0022] When raising and lowering the tubing, the tubing power tongs are translated to achieve precise centering, and then the shackle or connection work is completed. When raising and lowering the sucker rod, the tubing power tongs are translated to achieve precise centering, and then the shackle or connection work is completed.

[0023] Beneficial effects of the present invention: The present invention provides a detachable multifunctional automatic working platform for well repair rigs and a working method thereof, which can realize the individual precise positioning of the working platform through the detachably connected working platform, the modular connecting seat and the positioning pins, thereby realizing efficient and accurate centering and positioning operations; the shackle power tongs adopt a cylinder slide structure to realize one-touch switching of the working device when lifting the oil pipe and the sucker rod, and realize efficient and easy centering of the diagonal pliers; the grabbing mechanism is installed on the working platform, and there is no need for secondary centering, which is more convenient and quick when lifting and lowering the drill rod; and the lifting and lowering cylinders are supported and straightened by the straightener to reduce the amount of shaking and make it easier to operate. In summary, by integrating various functions on the platform, all processes of the entire platform only need to be aligned once, and the subsequent shackles and lifting and lowering of drill rods can be realized in automated operations, which greatly simplifies the manpower allocation of well repair operations and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a detachable multifunctional automatic working platform of a well repair rig of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the platform frame in the present invention;

[0026] Figure 3 It is a structural schematic diagram of the connecting seat in the present invention;

[0027] Figure 4 It is a structural schematic diagram of the grabbing mechanism in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the centralizer in the present invention.

[0029] The reference numerals in the figure are as follows: 1-platform frame; 2-slip; 3-connecting seat; 4-sucker rod power clamp; 5-oil pipe power clamp; 6-connecting pin; 7-leg cylinder; 8-grabbing mechanism; 9-centralizer; 11-connecting pin shaft; 12-first slide; 13-second slide; 14-first slide cylinder; 15-second slide cylinder; 16-grabbing structure mounting seat; 17-lifting ear; 18-positioning plate. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0031] like Figures 1 to 5As shown, the present invention provides a detachable multifunctional automatic working platform for a well repairing machine, including a platform frame 1, on which a lifting lug 17 is provided. The four corners below the platform frame 1 are respectively connected with outrigger cylinders 7, which are installed on the lower part of the platform frame 1 through a pin shaft. After the platform frame 1 is positioned with the connecting seat 3 through the positioning plate 18, the outrigger cylinder 7 is extended and fixed, and the working load is transferred to the ground through the outrigger cylinder 7. Four positioning plates 18 are provided on the platform frame 1, and the positioning plates 18 and the connecting seat 3 are connected through the connecting pin shaft 11. After the platform frame is separated from the main platform 1, the lifting platform falls on the connecting seat 3, and the positioning plates 18 and the connecting seat 3 are positioned and inserted through the connecting pin shaft 11.

[0032] The platform frame 1 is slidably connected with a sucker rod power tong 4 and a tubing power tong 5, and a grabbing mechanism 8 and a centralizer 9 are arranged on the platform frame 1. A grabbing structure mounting seat 16 for mounting the grabbing mechanism 8 is arranged on the platform frame 1, and the grabbing mechanism 8 is mounted on the grabbing structure mounting seat 16 by bolts. The centralizer 9 is mounted on the platform frame 1 by bolts.

[0033] A connecting seat 3 is provided below the platform frame 1, and the connecting seat 3 is connected to the wellhead blowout preventer by bolts, and the connecting seat 3 is positioned with the wellhead frame positioning plate by a pin shaft. A slip 2 is provided on the connecting seat 3, and the slip 2 is fixed to the connecting seat 3 by bolts. The slip 2 and the connecting seat 3 are disassembled in a modular manner, and are installed and connected separately during work. The platform frame 1 is detachably connected to the rear of the upper vehicle on the main engine through the connecting pin 6, so as to realize the disassembly and separation from the upper vehicle on the main engine. During work, after the main engine is positioned, the working platform is separated from the main engine frame by pulling out the connecting pin 6; when transferring, the connecting pin 6 is installed to realize the connection with the main engine and transport together.

[0034] The platform frame 1 is provided with a first slide 12 and a first slide cylinder 14, the tubing power tong 5 is embedded in the first slide 12 and connected to the first slide cylinder 14, and the tubing power tong 5 is pushed to move along the first slide 12 by the first slide cylinder 14. The platform frame 1 is provided with a second slide 13 and a second slide cylinder 15, the sucker rod power tong 4 is embedded in the second slide 13 and connected to the second slide cylinder 15, and the sucker rod power tong 4 is pushed to move along the second slide 13 by the second slide cylinder 15.

[0035] The working process of the present invention is as follows: when the equipment is transferred, the platform frame 1 is fixed to the tail of the self-propelled workover rig through the connecting pin 6 for transportation. When arriving at the workover well site, the workover rig carrying the working platform is placed near the wellhead through the self-propelled function of the workover rig, and rough positioning is performed;

[0036] After rough positioning, the connection seat 3 is hoisted and installed on the wellhead blowout preventer group with bolts to achieve the positioning installation of the connection seat 3;

[0037] Then, the connecting pin 6 is pulled out to separate the platform frame 1 from the main body of the workover rig;

[0038] Use a crane to lift the lifting lug 17, keep the balance, align the platform frame 1 and the connecting seat 3, and after the adjustment, install the connecting pin 11 in the pin hole of the positioning plate 18 and the connecting seat 3 to achieve the positioning and installation of the platform frame 1. Then use the outrigger cylinder 7 to fix it, so as to complete the centering work.

[0039] After positioning is completed, the slip 2 is hoisted and placed on the connecting seat 3, and installed and connected through the reserved bolt holes to complete the positioning and installation of the slip 2.

[0040] When lifting the oil pipe and sucker rod, start the slip 2 to grab it, use the breakout pliers to disassemble it, and then use the grabbing mechanism 8 to grab it and place it in the drill pipe box; when lowering the sucker rod, the grabbing mechanism 8 grabs it and positions it at the wellhead, and then uses the breakout pliers and slip 2 to install it.

[0041] When raising and lowering the oil pipe, the large carriage oil cylinder 14 is used to push the oil pipe power tongs 5 ​​along the large carriage 12 to the large carriage limit to achieve precise centering, and then the shackle or connection work is completed. When raising and lowering the sucker rod, the small carriage oil cylinder 15 is used to push the oil pipe power tongs 6 along the small carriage 13 to the second carriage 13 limit to achieve precise centering, and then the shackle or connection work is completed.

[0042] When grabbing the oil pipe or the sucker rod, since the grabbing mechanism 8 is integrated on the working platform, no secondary alignment is required, and the positioning grabbing of the grabbing mechanism can be achieved through preset and one-button operation.

[0043] When the oil pipe or the pumping rod is raised or lowered, the centralizer 9 is used to centralize the oil pipe or the pumping rod, thereby reducing the shaking amount and improving the grabbing efficiency.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A working method of a detachable multifunctional automatic working platform of a well repair rig, characterized in that: The detachable multifunctional automatic working platform of the well repair rig comprises a platform frame (1), the four corners of the platform frame (1) are respectively connected to the outrigger cylinders (7), the platform frame (1) is slidably connected to the pumping rod power tongs (4) and the tubing power tongs (5), the platform frame (1) is provided with a grabbing mechanism (8) and a centralizer (9), the platform frame (1) is provided with a connecting seat (3) below, the connecting seat (3) is provided with a slip (2), the platform frame (1) is detachably connected to the main engine vehicle via a connecting pin (6), the connecting seat (3) is connected to the wellhead blowout preventer via bolts, and the connecting seat (3) is positioned via a pin shaft and a wellhead frame positioning plate, comprising the following steps: When the equipment is transferred, the platform frame (1) is fixed to the rear of the self-propelled well repair rig by means of the connecting pin (6) and transported together. When the equipment arrives at the well repair site, the well repair rig carrying the working platform is placed near the wellhead by means of the self-propelled function of the well repair rig, and rough positioning is performed. After rough positioning, the connecting seat (3) is hoisted and installed on the wellhead blowout preventer group, thereby achieving the positioning installation of the connecting seat (3); Then, the connecting pin (6) is pulled out to separate the platform frame (1) from the main body of the workover rig; Lift the platform frame (1), align the platform frame (1) and the connecting seat (3), connect and fix the platform frame (1) and the connecting seat (3) to achieve the positioning and installation of the platform frame (1), and use the outrigger oil cylinder (7) to fix it to complete the centering work; After the positioning is completed, the slip (2) is hoisted and placed on the connecting seat (3), thereby completing the positioning and installation of the slip (2); When lifting the oil pipe and the sucker rod, the slip (2) is started to grasp, and after the disassembly is completed using the breakout pliers, the grabbing mechanism (8) grabs and places it in the drill rod box. When lowering the sucker rod, the grabbing mechanism (8) grabs and positions it at the wellhead, and the breakout pliers and slips (2) are used to install it respectively; When raising and lowering the oil pipe, the oil pipe power tongs (5) are translated to achieve accurate centering, and then the shackle or connection work is completed. When raising and lowering the sucker rod, the sucker rod power tongs (4) are translated to achieve accurate centering, and then the shackle or connection work is completed.

2. The working method of the detachable multifunctional automatic working platform of the well repair rig according to claim 1, characterized in that: Four positioning plates (18) are arranged on the platform frame (1), and the positioning plates (18) are connected to the connecting seat (3) via a connecting pin shaft (11).

3. The working method of the detachable multifunctional automatic working platform of the well repair rig according to claim 1, characterized in that: The platform frame (1) is provided with a first slide (12) and a first slide cylinder (14), and the tubing power tongs (5) are embedded in the first slide (12) and connected to the first slide cylinder (14); the platform frame (1) is provided with a second slide (13) and a second slide cylinder (15), and the sucker rod power tongs (4) are embedded in the second slide (13) and connected to the second slide cylinder (15).

4. The working method of the detachable multifunctional automatic working platform of the well repair rig according to claim 1, characterized in that: A gripping structure mounting seat (16) for mounting the gripping mechanism (8) is provided on the platform frame (1), and the gripping mechanism (8) is mounted on the gripping structure mounting seat (16) by means of bolts.

5. The working method of the detachable multifunctional automatic working platform of the well repair rig according to claim 1, characterized in that: The platform frame (1) is provided with a lifting lug (17).

6. The working method of the detachable multifunctional automatic working platform of the well repair rig according to claim 1, characterized in that: The slip (2) is fixed to the connecting seat (3) by means of bolts.

7. The working method of the detachable multifunctional automatic working platform of the well repair rig according to claim 1, characterized in that: The outrigger oil cylinder (7) is installed below the platform frame (1) via a pin shaft.

8. The working method of the detachable multifunctional automatic working platform of the well repair rig according to claim 1, characterized in that: The centralizer (9) is mounted on the platform frame (1) by means of bolts.

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