CN205638290U - Oil well pipe fitting dismouting device - Google Patents

Abstract

The utility model relates to a disassembly and assembly device for oil well pipe fittings, comprising: a liquid accumulation box, including a connection end and an opening end opposite to the connection end; a clamping mechanism, located at the opening end of the liquid accumulation box, for fixing the first oil well pipe fitting The assembly and disassembly mechanism is located on the side of the open end of the liquid accumulation tank. The assembly and disassembly mechanism can be located at a position opposite to the clamping mechanism to connect or separate the first oil well pipe and the second oil well pipe. The assembly and disassembly mechanism includes a clamping mechanism The clamping assembly holding the second oil well pipe is rotatable relative to the clamping mechanism. In the above oil well tubular fitting dismounting device, the holding mechanism can fix the first oil well tubular fitting, and the dismounting mechanism matched with the holding mechanism clamps the second oil well tubular fitting through the clamping assembly to connect the first oil well tubular fitting and the second oil well tubular fitting Or separation, with high installation or disassembly efficiency, the liquid accumulation tank can collect the well fluid flowing out during the connection or disassembly process to prevent the well fluid leakage, so as to realize the green construction of the wellhead.

Description

Oil well pipe fitting dismantling device

technical field

The utility model relates to the field of oil well wellhead operation equipment, in particular to a disassembly and assembly device for oil well pipe fittings.

Background technique

As an important energy source, petroleum plays an indispensable role in the development of society. In the field of oil well exploration, development and production industry, oilfield wellhead operation is an indispensable work in the oilfield production process, and drilling and workover are important links in the oilfield production process. In the process of drilling and workover, some tools of the drilling and workover pipe type, such as oil pipes, sucker rods, drill pipes, etc., are often transported.

At present, the handling of pipe fitting tools in the underground mainly depends on special cranes for hoisting, and manual assistance is carried out by removing and hanging hooks. Due to the harsh environment at the wellhead, the operators not only have high labor intensity and a very difficult working environment, but also often have greater dangers because they work under the crane. Moreover, along with the development of the construction, the well fluid flowing out from the wellhead or carried out with the pipe fittings is sprinkled on the periphery of the wellhead or on the construction personnel, causing the construction personnel's working environment to be further bad and polluting the environment.

Utility model content

Based on this, it is necessary to provide an oil well pipe fitting dismantling device that reduces the labor intensity of construction personnel and can recover well fluid for the problems of high labor intensity in oil well operations and environmental pollution caused by well fluid outflow.

A device for disassembling oil well pipes, used for disassembling a first oil well pipe and a second oil well pipe, comprising:

The liquid accumulation box includes a connection end and an open end opposite to the connection end;

a clamping mechanism, located at the open end of the liquid accumulation tank, for fixing the first oil well tubular; and

The dismounting mechanism is arranged on the side of the opening end of the liquid accumulation tank, and the disassembling mechanism can be located at a position opposite to the clamping mechanism to connect or separate the first oil well pipe and the second oil well For a pipe, the assembly and disassembly mechanism includes a clamping assembly for clamping the second oil well tubular, and the clamping assembly is rotatable relative to the clamping mechanism.

In the above oil well tubular fitting dismounting device, the holding mechanism can fix the first oil well tubular fitting, and the disassembling mechanism matched with the holding mechanism clamps the second oil well tubular fitting through the clamping assembly to connect the first oil well tubular fitting and the second oil well tubular fitting Or separation, with high installation or disassembly efficiency, and reduces the labor intensity of workers. The liquid accumulation tank can collect the well fluid flowing out during the connection or disassembly to prevent the well fluid from leaking out, so as to realize the green construction of the wellhead.

In one of the embodiments, the oil well tubular fitting dismounting device further includes a control mechanism, the control mechanism is respectively connected with the clamping mechanism and the dismounting mechanism, and is used to control the clamping mechanism to clamp or loosen. , and control the clamping assembly of the dismounting mechanism to clamp, loosen or rotate.

In one of the embodiments, the oil well tubular fitting dismantling device further includes a well fluid pump, and the well fluid pump is connected to the pipeline of the liquid accumulation tank.

In one of the embodiments, the dismounting mechanism includes a guide rail and a dismounting part arranged at a distance from the clamping mechanism, the guide rail is arranged at the opening end of the liquid accumulation tank, and the dismounting part can be Moving back and forth along the length direction of the guide rail, the clamping assembly is arranged on the dismounting part.

In one of the embodiments, the dismounting mechanism further includes a moving structure that can slide along the guide rail, the dismounting part is installed on the moving structure, and the moving structure drives the dismounting part along the guide rail reciprocating movement.

In one of the embodiments, the dismounting part further includes a split gear and a braking part in transmission connection, the clamping assembly is located on the inner hole wall of the split gear, and the split gear is used to drive the clamping The component rotates, and the braking member is used to brake the clamping component and make the clamping component clamp the oil well pipe.

In one of the embodiments, the oil well tubular fitting dismounting device further includes an oil scraper and a well sealing device, the oil scraper is installed at the connection end of the liquid accumulation tank, and the well sealing device is connected to the The oil scraper is not connected to one end of the liquid accumulation tank, and the well sealing device is opened or closed to open or seal the oil well.

In one of the embodiments, the oil well tubular fitting dismantling device further includes a plurality of supporting legs, and the supporting legs are arranged on the liquid accumulation tank to support the liquid accumulation tank.

In one of the embodiments, the oil well tubular fitting dismounting device further includes a base and a lifting leg installed on the liquid accumulation tank, the base is provided with a base guide rail, and the lifting leg can move along the base The guide rail moves, and the jacking leg is provided with a jacking member to drive the jacking leg to expand and contract in its own length direction.

In one of the embodiments, the base is provided with swing legs, and the two swing legs are located on both sides in the width direction of the base, and the height of the end of the swing legs not connected to the base is adjustable. , to change the levelness of the rails.

Description of drawings

Fig. 1 is a structural schematic diagram of an oil well tubular fitting dismounting device according to an embodiment;

Fig. 2 is a schematic structural diagram of an oil well tubular processing system according to an embodiment.

detailed description

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present utility model are provided in the accompanying drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in Figure 1, an oil well tubular fitting dismounting device 100 in this preferred embodiment is used to connect or separate the first oil well tubular fitting and the second oil well tubular fitting connected by thread, and the oil well tubular fittings include but not limited to oil pipe and oil rod .

Specifically, the oil well tubular fitting dismounting device 100 includes a liquid accumulation tank 110 , a clamping mechanism 120 and a dismounting mechanism 130 . Wherein, the liquid accumulation box 110 includes a connection end and an opening end opposite to the connection end; the clamping mechanism 120 is located at the opening end of the liquid accumulation box 110, and is used to fix the first oil well pipe; On one side of the open end of the clamping mechanism 120, and can be located at a position opposite to the clamping mechanism 120 to connect or separate the first oil well tubular and the second oil well tubular. The dismounting mechanism 130 includes a clamping assembly 1342 for clamping the second oil well tubular, and the clamping assembly 1342 is rotatable relative to the clamping mechanism 120 .

In the oil well tubular fitting dismounting device 100 described above, the holding mechanism 120 can fix the first oil well tubular fitting, and the disassembling mechanism 130 matched with the holding mechanism 120 clamps the second oil well tubular fitting through the clamping assembly 1342 so as to align the first oil well tubular fitting with the second oil well tubular fitting. The oil pipe rods are connected or separated, which has high installation or disassembly efficiency and reduces the labor intensity of workers. The liquid accumulation tank 110 can collect the well fluid flowing out during the connection or disassembly process to prevent the well fluid from leaking out, so as to realize the green construction of the wellhead.

The oil well tubular fitting dismounting device 100 also includes a control mechanism, which is connected with the clamping mechanism 120 and the dismounting mechanism 130 to automatically control the clamping mechanism 120 and the dismounting mechanism 130 . Specifically, the control mechanism can be used to control clamping or loosening of the clamping mechanism 120 , and clamping, loosening or rotation of the clamping component 1342 of the dismounting mechanism 130 . Therefore, construction personnel do not need to manually operate the clamping mechanism 120 and the dismounting mechanism 130 , thereby reducing the labor intensity of construction personnel and having higher work efficiency.

Please continue to refer to FIG. 1 , the oil well tubular fitting dismounting device 100 also includes a well fluid pump 140 . The well fluid pump 140 is arranged on the outer wall of the fluid accumulation tank 110 and is connected to the fluid accumulation tank 110 by pipelines, and the outlet end pipeline of the well fluid pump 140 is connected to the main line of the oil well or the fluid accumulation tank. In this way, the well fluid collected in the liquid accumulation tank 110 can be returned to the oil well through the well fluid pump 140, or stored in the liquid accumulation tank, so as to avoid flowing out of the wellhead or being carried out by the oil well tubular during the disassembly process of the oil well tubular The well fluid is discharged into the external environment, causing environmental pollution, wasting resources and causing inconvenience to the construction personnel.

In this embodiment, the clamping mechanism 120 is an automatic slip, which can be driven by pneumatic or hydraulic means. Specifically, the automatic slips include retractable jaws to hold the first oil well tubular piece protruding from the wellhead, so as to fix the first oil well tubular piece. It can be understood that the specific structure of the clamping mechanism 120 is not limited, and can be selected according to actual needs.

The disassembly mechanism 130 includes a guide rail 132 and a disassembly piece 134 spaced apart from the clamping mechanism 120 . The guide rail 132 is arranged at the opening end of the liquid accumulation tank 110 , and the dismounting part 134 can reciprocate along the length direction of the guide rail 132 . When disassembling or installing the first oil well tubular and the second oil well tubular, the dismounting part 134 moves along the guide rail 132 to just above the clamping mechanism 120, clamps the second oil well tubular and rotates it, thereby connecting or separating the two. Root oil well pipe fittings.

The dismounting mechanism 130 also includes a moving structure 136 that can slide along the guide rail 132 . The dismounting part 134 is installed on the moving structure 136 , and the moving structure 136 drives the dismounting part 134 to reciprocate along the length direction of the guide rail 132 . One end of the disassembly part 134 is connected to the moving structure 136, and the other end is provided with the above-mentioned clamping assembly 1342 that can rotate relative to the clamping mechanism 120, and is used for clamping and rotating the oil well pipe.

In this embodiment, the dismounting part 134 is a hydraulic power tong. Specifically, the dismounting part 134 includes a main tong, and the main tong includes an open gear, a brake piece, and the above-mentioned clamping assembly 1342 arranged on the inner hole wall of the open gear, wherein the clamping assembly 1342 includes a slope plate, a tooth block, and a jaw plate The roller, the jaw plate and the jaw plate frame assembly, the jaw plate frame assembly in the inner cavity of the open gear are connected with the brake parts through transmission.

When the transmission system drives the open gear to rotate, the jaw plate frame assembly will produce a relative dislocation under the action of the braking force provided by the brake, that is, the ramp with the curved surface rotates with the open gear, and the jaw plate roller follows the curved surface of the ramp Climbing the slope, the jaw plate frame and the open gear move relatively until the tooth block clamps the oil well pipe, thereby realizing the clamping of the oil well pipe. When the torque applied by the open gear exceeds the required rotational force of the jaw frame, the open gear drives the jaw frame assembly, the jaw plate, and the tooth block to rotate together to tighten or unscrew the thread of the oil well pipe. It can be understood that the detachable part 134 can also be of other structures, and can be set as required.

There are two guide rails 132 , the two guide rails 132 are arranged in parallel and at intervals, and the clamping mechanism 120 is located below between the two guide rails 132 . The moving structure 136 includes a driving part 1362 and a moving base 1364 for installing the dismounting part 134 . The moving base 1364 is arranged on the two guide rails 132 and consists of a support plate and a plurality of interconnected brackets to support the dismounting part 134 . The driving part 1362 is fixedly connected to the guide rail 132 and drives the moving seat 1364 to move along the guide rail 132 , thereby driving the dismounting part 134 to move. In this embodiment, the driving member 1362 is an oil cylinder, and the piston rod of the oil cylinder reciprocates to drive the moving seat 1364 to move along the guide rail 132 .

In this way, the clamping mechanism 120 can fix the first oil well tubular, and the second oil well tubular is clamped by the dismounting mechanism 130 and driven by the dismounting mechanism 130 to rotate, so that the first oil well tubular is connected or separated from the second oil well tubular.

The oil well tubular fitting dismounting device 100 also includes an oil scraper 150 . The oil scraper 150 is disposed at the connection end of the liquid accumulation tank 110 . The oil scraper 150 can scrape off various attachments on the first oil well pipe from the oil well head, and the scraped attachments flow into the liquid accumulation tank 110 for easy recycling.

In this embodiment, the center of the oil scraper 150 is provided with an oil scraping hole communicating with the liquid accumulation tank 110, and the inner wall of the oil scraping hole is provided with a rubber ring, and the rubber ring contacts the first oil well pipe and passes through the first oil well pipe. When the first oil well tubular is moving relative to the oil scraper 150, the attachment on the outer wall of the first oil well tubular is scraped off.

The oil well tubular fitting dismantling device 100 also includes a well sealing device 160 , and the well sealing device 160 is arranged on the side of the connection end of the liquid accumulation tank 110 that is not connected to the open end. Specifically, one end of the sealer 160 is directly connected to the outlet of the oil well, and the other end is directly connected to the oil scraper 150 , and the well fluid flowing out of the oil well enters the liquid accumulation tank 110 through the sealer 160 and the oil scraper 150 .

In this embodiment, the well sealing device 160 is a ram blowout preventer, which includes a housing, a movable ram and a blowout preventer drive. The drive of the blowout preventer pushes the ram to move back and forth to open or close the blowout preventer of the ram. When the oil well pipe is disassembled, the blowout preventer driving part pushes the ram to move to one side to open the ram blowout preventer, so that the oil well pipe can pass through the ram blowout preventer. When the oil well pipe is not being disassembled, the blowout preventer driving part pushes the ram to move to the center to close the ram blowout preventer, thereby preventing the well fluid from flowing out of the oil well. It can be understood that the structure of the sealing device 160 is not limited thereto, and can be set according to actual needs.

The oil well tubular fitting dismantling device 100 also includes a plurality of supporting legs 170 , and the supporting legs 170 are connected to the liquid accumulation tank 110 to support the liquid accumulation tank 110 . Further, the supporting leg 170 includes a first section and a second section sheathed in the first section, and the first section and the second section are telescopically connected to adjust the height of the supporting leg 170 to adapt to different construction environments. In this embodiment, there are four supporting legs 170 , the cross-section of the liquid accumulation tank 110 is a rectangular structure, and the four supporting legs 170 are respectively arranged at four corners of the liquid accumulation tank 110 .

In this embodiment, a fence 190 is also provided on the edge of the liquid accumulation tank 110 for protection and isolation.

As shown in Figures 1 and 2, the oil well tubular fitting dismounting device 100 also includes a base 300 and a jacking leg 180 mounted on the liquid accumulation tank 110. The base 300 is provided with a base guide rail 320, and the jacking leg 180 can move along the guide rail. 132 moves to align with the well.

Specifically, the base rail 320 is rotatably connected to the base 300 . In this embodiment, the base guide rail 320 is disposed at one end of the base 300 and is pinned to the base 300 . When transporting the base 300, the base guide rail 320 can be rotated to recover the base guide rail 320, thereby reducing the overall transport size and facilitating transport.

Further, the base 300 is provided with a driving cylinder 340, one end of which is installed on the base 300, the piston rod of the driving cylinder 340 extends along the direction of the base guide rail 320, and is connected with the jacking leg 180 to drive the liquid accumulation tank 110. The clamping mechanism 120 and the dismounting mechanism 130 move along the base guide rail 320 to a position corresponding to the oil well.

The jacking leg 180 is provided with a jacking piece to drive the jacking leg 180 to expand and contract in its own length direction, so that the height of the oil well pipe fitting dismantling device 100 matches the height of the oil well. Specifically, the jacking leg 180 includes a first section and a second section that can move relative to each other under the driving of the jacking piece, and the jacking piece drives the first section and the second section to move relative to each other, thereby adjusting the height of the jacking leg 180. length.

The end of the jacking leg 180 that is not connected to the effusion tank 110 is provided with a roller 182, and the roller 182 rolls along the base guide rail 320 so that the oil well tubular fitting dismounting device 100 moves along the base guide rail 320 as a whole and enters the working position. In this embodiment, the piston rod of the driving cylinder 340 is rotatably connected to the roller 182 to drive the roller 182 to roll along the base rail 320 . During the working process, the control mechanism can control the roller 182 to roll along the base guide rail 320 according to actual needs, so as to adjust the position of the oil well tubular fitting dismounting device 100 in the length direction of the base guide rail 320 .

Further, the base 300 is provided with swing legs 360 . Specifically, the two swing legs 360 are located on both sides of the base 300 in the width direction, and the height of the end of the swing legs 360 not connected to the base 300 can be adjusted to change the horizontality of the guide rail 132 in the width direction.

Specifically, one end of the swing leg 360 is rotatably connected to the base 300 to form different angles with the base 300 , and the other end of the swing leg 360 is provided with a leg cylinder 362 . When the oil well pipe dismounting device 100 is working, the swing leg 360 swings to a position perpendicular to the base guide rail 320, and the leg cylinder 362 is supported on the ground. When the poor environment of the construction site causes the ground subsidence to cause the centering deviation between the oil well tubular fitting dismantling device 100 and the wellhead, the two outrigger cylinders 362 adjust the height of the two swing outriggers 360 respectively, thereby adjusting the levelness of the base 300 in the width direction (that is, the height of the base 300 relative to the ground), to achieve wellhead alignment during operation.

The above-mentioned oil well tubular fitting dismounting device 100 can, under the control of the control mechanism, the clamping mechanism 120 clamp the first oil well tubular fitting, and the disassembling mechanism 130 clamp and rotate the second oil well tubular fitting, thereby connecting or separating the two oil well tubular fittings . In addition, the oil well is sealed by the sealer 160, and the attachments when the oil well pipe is pulled out are scraped by the oil scraper 150. The scraped attachments and well fluid are collected by the liquid accumulation tank 110, and finally the liquid accumulation is discharged by the liquid pump Box 110. In addition, since the oil well tubular fitting dismounting device 100 is provided with a foldable base, and the liquid accumulation tank 110, the clamping mechanism 120, the dismounting mechanism 130, etc. can move along the base guide rail 320, and can be adjusted in different directions to Align the wellhead. In this way, it has high work efficiency, reduces the labor intensity of workers, and realizes green and environmental protection construction, and at the same time facilitates transportation and wellhead alignment during construction.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A device for disassembling oil well pipes, used for disassembling the first oil well pipes and the second oil well pipes, characterized in that it comprises: The liquid accumulation box includes a connection end and an open end opposite to the connection end; a clamping mechanism, located at the open end of the liquid accumulation tank, for fixing the first oil well tubular; and The dismounting mechanism is arranged on the side of the opening end of the liquid accumulation tank, and the disassembling mechanism can be located at a position opposite to the clamping mechanism to connect or separate the first oil well pipe and the second oil well For a pipe, the assembly and disassembly mechanism includes a clamping assembly for clamping the second oil well tubular, and the clamping assembly is rotatable relative to the clamping mechanism. 2. The oil well tubular fitting dismounting device according to claim 1, characterized in that, the oil well tubular fitting dismounting device further comprises a control mechanism, and the control mechanism is respectively connected with the clamping mechanism and the dismounting mechanism, It is used to control the clamping mechanism to clamp or loosen, and control the clamping assembly of the dismounting mechanism to clamp, loosen or rotate. 3. The oil well tubular fitting dismounting device according to claim 1, characterized in that, the oil well tubular fitting dismounting device further comprises a well fluid pump, and the well fluid pump is connected to the liquid accumulation tank with a pipeline. 4. The installation and disassembly device for oil well pipes according to claim 1, characterized in that, the disassembly mechanism includes a guide rail and a disassembly part arranged at a distance from the clamping mechanism, and the guide rail is arranged on the liquid accumulation tank The opening end of the guide rail, the dismounting part can reciprocate along the length direction of the guide rail, and the clamping assembly is arranged on the dismounting part. 5. The assembly and disassembly device for oil well tubular parts according to claim 4, wherein the assembly and disassembly mechanism further includes a moving structure that can slide along the guide rail, the assembly and disassembly parts are installed on the moving structure, the The moving structure drives the disassembly part to reciprocate along the guide rail. 6. The installation and dismounting device for oil well tubulars according to claim 4, characterized in that, the dismounting part further comprises a split gear and a braking part connected by transmission, and the clamping assembly is located on the inner hole wall of the split gear , the open gear is used to drive the clamping assembly to rotate, and the braking member is used to brake the clamping assembly and make the clamping assembly clamp the oil well pipe. 7. The oil well tubular fitting dismounting device according to any one of claims 1 to 6, characterized in that, the oil well tubular fitting dismounting device further includes an oil scraper and a well sealing device, and the oil scraper is installed on the The connection end of the liquid accumulation tank, the well sealer is connected to the end of the oil scraper not connected to the liquid accumulation tank, and the well sealer is opened or closed to open or seal the oil well. 8. The oil well tubular fitting dismantling device according to claim 1, characterized in that, the oil well tubular fitting dismounting device further comprises a plurality of supporting legs, and the supporting legs are arranged on the liquid accumulation tank to support the liquid accumulation box. 9. The oil well tubular fitting dismounting device according to claim 1, characterized in that, the oil well tubular fitting dismounting device further comprises a base and jacking legs installed on the liquid accumulation tank, and the base is provided with a base guide rail , the jacking leg can move along the base guide rail, and the jacking leg is provided with a jacking member to drive the jacking leg to expand and contract in its own length direction. 10. The installation and dismounting device for oil well tubular parts according to claim 9, characterized in that, the base is provided with swing legs, and the two swing legs are located on both sides of the base in the width direction, and the swing legs The height of the end of the leg not connected to the base is adjustable to change the level of the rail.