Vehicle-mounted small wellhead repair operation device and method

Abstract

The present invention relates to a vehicle-mounted small wellhead repair operation device and method. The technical scheme is as follows: the lifting track includes a track body and a track crossbeam, the track body is connected to the track crossbeam through a pin shaft, and the track body is installed on the derrick body; the variable amplitude bracket is a scissor frame structure, the front end is connected to the upper and lower sliding brackets, and the rear end is fixed to the track body, the variable amplitude cylinder drives the variable amplitude bracket to extend and retract forward and backward, and the upper and lower sliding brackets are adjusted up and down along the variable amplitude bracket; the pipe supporting arm base and the wellhead translation slideway have three connection positions to adapt to wellheads in various situations, and the buckle device is installed at the front end of the wellhead translation slideway to support the oil pipe; the beneficial effect is that the present invention can achieve diversified wellhead adaptability, can adapt to the pumping wellhead without walking beam, and can also be applied to wellheads in various other complex environments; the platform can greatly reduce the labor intensity of operators, reduce the number of operators, and improve the efficiency of operations.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum well repair equipment, and in particular to a vehicle-mounted small well repair operation device and method. Background Art

[0002] Oilfield workover operations are a very important part of the oilfield production process. In order to ensure the continuous production capacity during the oilfield production process, the efficiency and stability of the workover operations must also be guaranteed. Workover operations are divided into overhaul operations and minor workover operations according to the complexity and operating equipment. The main work content of minor workover operations is daily maintenance operations, including pump inspection, jam removal, sand flushing and well washing, simple salvage, etc. The work cycle is short, the relocation is frequent, the wellhead environment is complex and diverse, and the use of ordinary minor workover platforms has limitations.

[0003] In recent years, with the increasing requirements of the state for environmental protection and personnel safety protection, the market is in urgent need of economical and practical fully automatic minor repair operation platforms, hoping to achieve unmanned operation near the wellhead. However, since large oil service companies and oil equipment companies have applied more advantageous resources to the technical research and development of offshore drilling platforms and exploration, drilling and overhaul equipment, the automation research and development of minor repair operation equipment has been stagnant. So far, there has been no mature, reliable, economical and practical vehicle-mounted minor repair wellhead operation device widely recognized by the market in China or even in the world. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle-mounted minor wellhead repair operation device and method to address the above-mentioned defects in the prior art, thereby greatly improving the efficiency of minor repair operations, significantly reducing the number of conventional operators, achieving the advantages of mechanization, high efficiency, and unmanned operations, and realizing the needs of different site environments for minor repair operations, being able to simply and conveniently change the layout of the equipment, and having good practicality.

[0005] The present invention discloses a vehicle-mounted small wellhead workover operation device, the technical solution of which is as follows: comprising a lifting track (100), a power tongs assembly (200), a wellhead translation slideway (300), a pipe support arm assembly (400), and a buckling device (500); the lifting track (100) comprises a track body (110) and a track crossbeam (120); the track body (110) and the track crossbeam (120) are connected via a pin shaft; the track body (110) is mounted on a Y-shaped bracket or directly welded to a Y-shaped rear bracket of a wellhead workover machine; the power tongs assembly (200) comprises a lifting track (100) and a track body (110) and a track crossbeam (120); the track body (110) and the track crossbeam (120) are connected via a pin shaft; the track body (110) is mounted on a Y-shaped bracket or directly welded to a Y-shaped rear bracket of a wellhead workover machine; the power tongs assembly (20 0) comprises an upper and lower sliding bracket (210), a luffing bracket (220), a hydraulic oil pipe clamp (230), and a luffing cylinder (240); the luffing bracket (220) is a scissor frame structure, the front end of which is connected to the upper and lower sliding bracket (210), and the rear end is fixed to the track body (110); the luffing cylinder (240) is installed between the track body (110) and the luffing bracket (220); the luffing cylinder (240) drives the luffing bracket (220) to extend and retract forward and backward, and the upper and lower sliding brackets (210) are adjusted up and down along the luffing bracket (220);

[0006] The wellhead translation slideway (300) comprises a connecting crossbeam (310), a front slideway (320), a middle slideway (330), and a rear slideway (340). The three slideways are connected by corresponding rollers, and can easily achieve a stretching function. Together with the variable amplitude support (220), they are pushed in the direction of the derrick during transportation. The buckling device (500) is installed at the front end of the wellhead translation slideway (300) and is used to support the oil pipe.

[0007] The pipe support arm assembly (400) comprises an arm frame (410), a pipe support arm base (420), and a gripper assembly (430). The top of the pipe support arm base (420) is connected to a plurality of gripper assemblies (430) via a plurality of arm frames (410). The pipe support arm base (420) and the wellhead translation slideway (300) have three connection positions. The installation position can be selected according to actual working conditions, thereby adapting to wellheads in various conditions.

[0008] Preferably, the track body (110) of the lifting track (100) is connected and fixed to the Y-shaped bracket via a mounting seat and an ear plate, or is directly welded to the Y-shaped rear bracket of the well repair machine.

[0009] Preferably, the top of the pipe support arm base (420) is connected to three arm frames (410) via a rotary reducer (440), and the upper end of each arm frame (410) is respectively connected to a gripper assembly (430).

[0010] Preferably, the interlocking device (500) comprises a swing seat (510), a swing arm (520), a conical tube (530), and an interlocking cylinder (540); the conical tube (530) is connected to the swing seat (510) via the swing arm (520), and the swing arm (520) is installed and fixed with the interlocking cylinder (540); the interlocking cylinder (540) drives the swing arm (520) to move to achieve the function of supporting the oil pipe.

[0011] Preferably, the wellhead translation slideway (300) comprises a connecting beam (310), a front slideway (320), a middle slideway (330), and a rear slideway (340); the front slideway (320), the middle slideway (330), and the rear slideway (340) are respectively provided with rollers to realize a stretching function; and a connecting beam (310) is provided at the outermost end of the front slideway (320).

[0012] The variable amplitude bracket (220) in the power tongs assembly (200) is driven to a retracted state by the variable amplitude oil cylinder (240); the wellhead translation slideway (300) pushes the connecting crossbeam (310) to push the front slideway (320) and the middle slideway (330) to the bottom of the rear slideway (340), so that the three-section slideway reaches a retracted state, thereby saving space for transportation and saving moving resources.

[0013] The method for using a vehicle-mounted small wellhead repair operation device mentioned in the present invention comprises the following process:

[0014] 1. The process of loading the oil pipe in the well repair operation: the hydraulic elevator (c) is lowered to a low position and then turned to 90 degrees. The conveyor lifts the oil pipe (g) and conveys it to the wellhead position. The hydraulic elevator (c) is lifted and closed to catch the oil pipe (g). The hydraulic elevator (c) continues to lift. The pipe support arm (400) grabs the lower part of the oil pipe and places the oil pipe on the center line of the wellhead. The conveyor falls back to take out the next oil pipe. The buckling device (500) is closed to guide the oil pipe and assist the oil pipe to achieve buckling. The buckling device (500) is opened. The gripper (430) in the pipe support arm assembly (400) is opened. The power clamp (200) is extended forward to complete the buckling operation. Then the power clamp (200) is retracted, the slips are opened, the hydraulic elevator (c) lowers the oil pipe to the wellbore, the pneumatic slips (e) are closed, and then the power clamp (200) is turned to 90 degrees to continue the oil pipe loading operation.

[0015] 2. Well repair operation tubing throwing process: the conveyor is on standby at high position, the hydraulic elevator (c) is at low position, the tubing (g) is grabbed by side swing, the pneumatic slip (e) is opened, the tubing is lifted out of the wellhead, the pneumatic slip (e) is closed, the power tongs (200) are extended, the unbuckling operation is completed, the grab (430) in the tubing support arm assembly (400) is opened to grab the lower part of the tubing, and the tubing is placed on the conveyor, then the grab (430) in the tubing support arm assembly (400) is opened, the hydraulic elevator (c) is lowered, the tubing is completely placed on the conveyor, the hydraulic elevator (c) is clamped, the conveyor is lowered to the low position to throw the drilling tool, and then it continues to standby at high position, and the hydraulic elevator continues to grab the next tubing at low position.

[0016] The beneficial effects of the present invention are as follows: there are multiple positions on the track body of the lifting track mentioned in the present invention, and the positions of the track beam and the track body can be adjusted according to actual working conditions, and the height can be adjusted by using a well repair rig winch or an oil cylinder; the power clamp assembly realizes the retracted state of the three-section slideway, saving space for transportation and saving moving resources; the pipe supporting arm base and the wellhead translation slideway have three connection positions, and the installation position can be selected according to actual working conditions to adapt to wellheads in various situations; the buckle device can realize the function of supporting the oil pipe; in short, the present invention can realize diversified wellhead adaptability, can adapt to the wellhead of the pumping unit without walking beam, and can also be suitable for wellheads in various other complex environments; the platform can greatly reduce the labor intensity of the operators, reduce the number of operators, improve the efficiency of the operation, and realize the needs of different site environments for minor repair operations, and can simply and conveniently change the layout of the equipment, with good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the working state of the present invention;

[0018] Attached Figure 2 It is a schematic diagram of the working state of the power tongs assembly;

[0019] Attached Figure 3 It is a schematic diagram of the state of the power clamp assembly when it is contracted;

[0020] Attached Figure 4 It is a structural schematic diagram of one side of the buckling device;

[0021] Attached Figure 5 This is a schematic diagram of the structure of the buckle device when it is in use;

[0022] Attached Figure 6 It is a schematic diagram of the position of the pipe support arm assembly of the present invention;

[0023] Attached Figure 7 This is a schematic diagram of the state of contraction during transportation of the present invention;

[0024] In the figure above: lifting track 100, power tongs assembly 200, wellhead translation slideway 300, pipe support arm assembly 400, buckle device 500, track body 110, track beam 120, upper and lower sliding bracket 210, luffing bracket 220, hydraulic pipe tongs 230, luffing cylinder 240, connecting beam 310, front slideway 320, middle slideway 330, rear slideway 340, arm 410, pipe support arm base 420, gripper assembly 430, swing seat 510, swing arm 520, conical cylinder 530, buckle cylinder 540;

[0025] Derrick body a, Y-shaped bracket b, hydraulic elevator c, lifting ring d, pneumatic slip e, blowout preventer f, oil pipe g, first position h1, second position h2, third position h3. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] Example 1, refer to the attached Figure 1-7 The present invention relates to a vehicle-mounted small wellhead repair operation device, comprising a lifting track 100, a power tong assembly 200, a wellhead translation slide 300, a pipe support arm assembly 400, and a buckle device 500. The lifting track 100 comprises a track body 110 and a track crossbeam 120. The track body 110 is connected to the track crossbeam 120 through a pin shaft, and the track body 110 is installed on the derrick body a; the power tong assembly 200 comprises an upper and lower sliding bracket 210, a variable amplitude bracket 220, a hydraulic oil pipe tong 230, and a variable amplitude cylinder 240. The luffing bracket 220 is a scissor frame structure, with the front end connected to the upper and lower sliding brackets 210, and the rear end fixed to the track body 110, and the luffing cylinder 240 is installed between the track body 110 and the luffing bracket 220, and the luffing cylinder 240 drives the luffing bracket 220 to extend and retract forward and backward, and the upper and lower sliding brackets 210 are adjusted up and down along the luffing bracket 220, and the working height of the hydraulic oil pipe clamp 230 is adjusted according to the actual working conditions; the luffing cylinder 240 drives the luffing bracket, which can be freely extended and retracted, extended during work, and retracted during transportation to save transportation space;

[0028] The wellhead translation slideway 300 includes a connecting crossbeam 310, a front slideway 320, a middle slideway 330, and a rear slideway 340. The three slideways are connected by corresponding rollers, and the stretching function can be easily realized. Together with the variable amplitude bracket 220, it is pushed to the direction of the derrick during transportation; the buckle device 500 is installed at the front end of the wellhead translation slideway 300, and is used to support the oil pipe;

[0029] The pipe supporting arm assembly 400 includes an arm frame 410, a pipe supporting arm base 420, and a grab assembly 430. The top of the pipe supporting arm base 420 is connected to multiple grab assemblies 430 through multiple arm frames 410. The pipe supporting arm base 420 has three connection positions with the wellhead translation slide 300, referring to the first position h1, the second position h2, and the third position h3 in the attached figure. The installation position can be selected according to the actual working conditions to adapt to wellheads in various situations.

[0030] Preferably, the track body 110 of the lifting track 100 is connected and fixed to the Y-shaped bracket b through a mounting seat and an ear plate or is directly welded to the Y-shaped rear bracket of the well repair machine.

[0031] Refer to the attached Figure 6 The top of the pipe support arm base 420 is connected to three arm frames 410 through a rotary reducer 440, and the upper end of each arm frame 410 is connected to a gripper assembly 430 respectively.

[0032] Refer to the attached Figure 4 and 5 The interlocking device 500 includes a swing seat 510, a swing arm 520, a conical tube 530, and an interlocking cylinder 540. The conical tube 530 is composed of two parts, each of which is connected to the swing arm 520 respectively, wherein the combined structure is: the upper part is a bell-mouth structure, and the lower part is a sleeve structure, and a plurality of reinforcing ribs are provided between the bell-mouth structure and the sleeve, and the bell-mouth structure plays a guiding role. The outer wall of the conical tube 530 is respectively connected to the two swing seats 510 through two swing arms 520, and the swing arm 520 is installed and fixed with the interlocking cylinder 540, and the swing arm 520 is driven to move by the interlocking cylinder 540 to achieve the function of supporting the oil pipe.

[0033] Refer to the attached Figure 6 The wellhead translation slide 300 includes a connecting beam 310, a front slide 320, a middle slide 330, and a rear slide 340. The front slide 320, the middle slide 330, and the rear slide 340 are respectively provided with rollers to realize a stretching function. A connecting beam 310 is provided at the outermost end of the front slide 320.

[0034] The method for using a vehicle-mounted small wellhead repair operation device mentioned in the present invention comprises the following process:

[0035] 1. The operation process of putting up the tubing in the well repair operation: the hydraulic elevator c is lowered to the low position and then turned to 90°. The conveyor lifts the tubing g and conveys it to the wellhead position. The hydraulic elevator c is lifted up and closed to catch the tubing g. The hydraulic elevator c continues to lift up. The pipe support arm 400 grabs the lower part of the tubing and places the tubing on the center line of the wellhead. The conveyor falls back to take down the next tubing. The buckling device 500 is closed to guide the tubing and assist the tubing in buckling. The buckling device 500 is opened. The gripper 430 in the pipe support arm assembly 400 is opened. The power tongs 200 are extended forward to complete the buckling operation. The power tongs 200 are then retracted and the slips are opened. The hydraulic elevator c lowers the tubing to the wellbore. The pneumatic slips e are closed. The power tongs 200 are then turned to 90° to continue the tubing operation.

[0036] 2. Tubing throwing operation process of well repair operation: conveyor is on standby at high position, hydraulic elevator c is at low position, side swing is used to grab tubing g, pneumatic slip e is opened, tubing is lifted out of wellhead, pneumatic slip e is closed, power tongs 200 are extended forward, shackle operation is completed, grabber 430 in pipe supporting arm assembly 400 is opened to grab the lower part of tubing, tubing is placed on conveyor, then grabber 430 in pipe supporting arm assembly 400 is opened, hydraulic elevator c is lowered, tubing is completely placed on conveyor, hydraulic elevator c is punched, conveyor is lowered to low position to throw drilling tools, then continues to standby at high position, hydraulic elevator continues to grab a tubing at low position.

[0037] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A vehicle-mounted small wellhead repair operation device, characterized by: The invention comprises a lifting track (100), a power tong assembly (200), a wellhead translation slideway (300), a pipe support arm assembly (400), and a buckling device (500). The lifting track (100) comprises a track body (110) and a track crossbeam (120). The track body (110) and the track crossbeam (120) are connected via a pin shaft. The track body (110) is mounted on a Y-shaped bracket. The power tong assembly (200) comprises an upper and lower sliding bracket (210), a variable amplitude bracket ( 220), a hydraulic oil pipe clamp (230), and a luffing cylinder (240), wherein the luffing bracket (220) is a scissor frame structure, the front end of which is connected to the upper and lower sliding brackets (210), and the rear end is fixed to the track body (110), and the luffing cylinder (240) is installed between the track body (110) and the luffing bracket (220), and the luffing cylinder (240) drives the luffing bracket (220) to extend and retract forward and backward, and the upper and lower sliding brackets (210) are adjusted up and down along the luffing bracket (220); The wellhead translation slideway (300) comprises a connecting crossbeam (310), a front slideway (320), a middle slideway (330), and a rear slideway (340). The three slideways are movably connected and are pushed to the direction of the derrick together with the luffing bracket (220) during transportation. The buckling device (500) is installed at the front end of the wellhead translation slideway (300) and is used to support the oil pipe. The pipe support arm assembly (400) comprises an arm frame (410), a pipe support arm base (420), and a gripper (430). The upper portion of the pipe support arm base (420) is connected to a plurality of grippers (430) via a plurality of arm frames (410). The pipe support arm base (420) and the wellhead translation slideway (300) have three connection positions. The installation position can be selected according to actual working conditions, thereby adapting to wellheads in various conditions. The top of the pipe support arm base (420) is connected to three arm frames (410) via a rotary reducer (440), and the upper end of each arm frame (410) is respectively connected to a gripper (430); The interlocking device (500) comprises a swing seat (510), a swing arm (520), a conical cylinder (530), and an interlocking cylinder (540); the conical cylinder (530) is connected to the swing seat (510) via the swing arm (520), and the interlocking cylinder (540) is installed and fixed on the swing arm (520); the interlocking cylinder (540) drives the swing arm (520) to move to achieve the function of supporting the oil pipe.

2. The vehicle-mounted small wellhead repair operation device according to claim 1 is characterized in that: The track body (110) of the lifting track (100) is connected to the ear plate and fixed on the Y-shaped bracket via a mounting seat.

3. The vehicle-mounted small wellhead repair operation device according to claim 1 is characterized in that: The wellhead translation slideway (300) comprises a connecting crossbeam (310), a front slideway (320), a middle slideway (330), and a rear slideway (340); the front slideway (320), the middle slideway (330), and the rear slideway (340) are respectively provided with rollers to realize a stretching function; and a connecting crossbeam (310) is provided at the outermost end of the front slideway (320).

4. A method for using the vehicle-mounted small wellhead repair operation device according to any one of claims 1 to 3, characterized in that The process includes:

1. The process of loading the oil pipe in the well repair operation: the hydraulic elevator (c) is lowered to a low position and then turned to 90 degrees. The conveyor lifts the oil pipe (g) and conveys it to the wellhead position. The hydraulic elevator (c) is lifted and closed to catch the oil pipe (g). The hydraulic elevator (c) continues to lift. The pipe support arm assembly (400) grabs the lower part of the oil pipe and places the oil pipe on the center line of the wellhead. The conveyor falls back to take out the next oil pipe. The buckling device (500) is closed to guide the oil pipe and assist the oil pipe to achieve buckling. The buckling device (500) is opened. The gripper (430) in the pipe support arm assembly (400) is opened. The power clamp assembly (200) is extended forward to complete the buckling operation. Then the power clamp assembly (200) is retracted, the slips are opened, the hydraulic elevator (c) lowers the oil pipe to the wellbore, the pneumatic slips (e) are closed, and then the power clamp assembly (200) is turned to 90 degrees to continue the oil pipe loading operation.

2. Well repair operation tubing throwing operation process: the conveyor is on standby at high position, the hydraulic elevator (c) is at low position, the tubing (g) is grabbed by side swing, the pneumatic slip (e) is opened, the tubing is lifted out of the wellhead, the pneumatic slip (e) is closed, the power tongs assembly (200) is extended forward, the shackle operation is completed, the grab (430) in the pipe support arm assembly (400) is opened to grab the lower part of the tubing, and the tubing is placed on the conveyor, then the grab (430) in the pipe support arm assembly (400) is opened, the hydraulic elevator (c) is lowered, the tubing is completely placed on the conveyor, the hydraulic elevator (c) is clamped, the conveyor is lowered to the low position to throw the drilling tool, and then continues to standby at high position, and the hydraulic elevator continues to grab the next tubing at low position.

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