CN217001769U

CN217001769U - Anti-pollution device for wellhead of pipe column for lifting liquid

Info

Publication number: CN217001769U
Application number: CN202220685650.4U
Authority: CN
Inventors: 陈席双; 杨伟华; 朱智; 张帮军; 张见阳
Original assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-07-19
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses a wellhead anti-pollution device for a string with liquid, which relates to the technical field of devices for sealing a string at a wellhead for underground petroleum operation, and comprises an anti-counterfeiting mechanism, an oil discharging mechanism and a guide mechanism, wherein the anti-counterfeiting mechanism comprises a connector body and a pressure regulating assembly for controlling the opening and closing of a vent hole on the connector body, so that liquid can be prevented from overflowing from the top of the string when the string is lifted, and the oil discharging speed at the bottom of the string can be regulated; the oil discharge mechanism comprises an oil cylinder assembly supported by a support assembly, the oil cylinder assembly is sealed at the joint of the tubular columns, and waste liquid discharged by the tubular columns is collected, so that zero leakage of oil discharge at well mouths can be realized; the sliding assembly drives the oil cylinder assembly to rapidly enter or exit the center of the wellhead through the supporting assembly, so that the operation intensity of workers is reduced; the guide mechanism can output the waste liquid drainage collected by the oil cylinder assembly, and the operation efficiency is high. The utility model has the advantages of reasonable structure, simple operation, good applicability and higher practical value.

Description

Anti-pollution device for wellhead of strip fluid pipe column

Technical Field

The utility model relates to a wellhead pipe column sealing device for petroleum underground operation, in particular to a wellhead anti-pollution device for a lifting liquid pipe column.

Background

In the process of oil exploitation, the conditions that an oil drain device cannot be put on and a pipe column is blocked are occasionally caused by the reasons of breaking and dropping of a sucker rod, breaking and dropping of a piston, sand blocking and the like; in the construction of sand filling, sand washing, high-pressure filling and sand prevention and the like, the pipe column is blocked by sand. The method for lifting the liquid column is an efficient method for solving the problem of column blockage.

In the operation of lifting the liquid carrying pipe column, if the pipe column is not controlled, liquid in the pipe column is arbitrarily sprayed at the wellhead, and the method has a plurality of problems: firstly, well mouth operators need to wear protective equipment, and the actions are clumsy and the construction efficiency is low; secondly, the sprayed liquid causes the well mouth to be wet and slippery, and potential safety hazards are caused to well mouth operators; finally, most sprayed liquid is an oil-water mixture, which pollutes the surrounding environment of the wellhead in a large area, and the subsequent cleaning work wastes time and labor and has poor economy.

In the chinese utility model patent with patent application number 202022472715.0, disclosed "a tubular column bleeder tool in pit", it is including being used for preventing the body of righting of upset or slope when tubular column whereabouts of tubular column bleeder tool in pit, with the liquid passageway of crossing of tubular column bleeder tool upper and lower both sides intercommunication, eccentric settings at the ejector pin of righting the body downside. During the use, tubular column bleeder instrument in pit can be at the whereabouts in-process through the ejector pin with the ball sealer crowded leaving the setting position realize the deblocking, and pressure liquid can flow through the liquid clearing hole on the pressure testing ball seat, avoids keeping pressure liquid in the tubular column when the tubular column is dismantled to the well head. Obviously, adopting above-mentioned scheme can avoid in theory dismantling at the well head and take the liquid tubular column to cause the liquid to spray, but discovery in the production practice, the borehole operation work load of above-mentioned scheme is big, the application cost is higher.

In order to avoid the liquid from being sprayed at the wellhead when lifting the liquid-carrying pipe column, technicians in the industry put a great deal of effort into research and development. In the chinese utility model patent that patent application number is 200420040124.4, just disclosed "the pollution prevention device is carried in the operation spraying", it comprises preventing spouting plug and oil collector, through the mode that upper portion tubing coupling is sealed, the partial waste liquid of well head is retrieved, can reduce the volume of spraying of liquid, still has the problem: the upper part adopts a blowout prevention pipe plug structure, an air inlet channel cannot be provided, and the oil discharge speed is low; the oil collector is open, oil is discharged by pushing the oil pipe through manual quick reaction, the aim of preventing waste liquid from falling to the ground and recovering cannot be completely fulfilled, and the practical efficiency is low.

In the chinese utility model patent of patent application No. 200920030606.4, given "oil pipe spray thrower", it is equipped with a plurality of bell grooves at the main part inner chamber, and the slider is put to bell groove ann, and spacing joint is installed at the main part lower extreme, and the slider seat is on spacing joint up end, main part up end installation gland, and this gland is fixed in the main part by the screw. When the device is used, the device needs to be installed inside a blowout preventer and fixed by using threads, and oil pipe buckling needs to be carried out for multiple times during oil unloading operation, so that the installation process is complicated; the spray lifting device with different specifications is required to be manufactured aiming at oil pipes with different specifications, and the universality is poor.

In view of the foregoing, it is desirable to develop an efficient tripping fluid string wellhead anti-contamination device.

Disclosure of Invention

In order to overcome the defect that the transmission parts are more in the prior art, the utility model provides a well mouth anti-pollution device of a liquid lifting pipe column, which has the advantages of simple operation, good applicability and high operation efficiency.

The technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides a play and take liquid tubular column well head anti-pollution device, its includes anti-counterfeiting mechanism, oil discharge mechanism and guide mechanism, its characterized in that:

the anti-counterfeiting mechanism comprises a joint body, mounting threads are arranged on the peripheral surface of the joint body, a thread assembling hole and an air vent are formed in the top of the joint body, and a pressure regulating assembly for controlling the opening and closing of the air vent is arranged on the thread assembling hole;

the oil discharging mechanism comprises an oil cylinder assembly, a supporting assembly and a sliding assembly, the oil cylinder assembly comprises two cylinders which are closed to form an oil discharging cavity, one sides of the two cylinders are connected through a hinge, the other sides of the two cylinders are opened or closed through a buckle, through holes communicated with the oil discharging cavity are respectively formed in the top and the bottom of the two cylinders, and an oil discharging hole communicated with the oil discharging cavity is formed in the side face of one cylinder; the sliding assembly is arranged on the fixed frame and comprises a track, a roller wheel rolling along the track and a sliding block supported by the roller wheel; one end of the supporting component is connected with the sliding block, and the other end of the supporting component supports the oil cylinder component;

the guide mechanism comprises a connecting pipe, one end of the connecting pipe is in butt joint with the oil unloading hole, and the other end of the connecting pipe is provided with a sleeve joint.

The pressure regulating assembly comprises a pressure regulating bolt, a spring, a sealing gasket and a limiting nut, the pressure regulating bolt sequentially and coaxially penetrates through the spring and the sealing gasket, the threaded assembling hole extends out of the connector body and is in threaded connection with the limiting nut, and the spring presses and blocks the sealing gasket on the vent hole.

The anti-counterfeiting mechanism further comprises a lifting handle, and two ends of the lifting handle are fixed on the joint body.

The supporting component comprises a supporting rod and a shaft sleeve, wherein the lower end of the supporting rod is connected with the sliding block, the shaft sleeve is sleeved at the upper end of the supporting rod, the shaft sleeve is connected with a cylinder, and the shaft sleeve freely rotates around the supporting rod.

One side of the shaft sleeve is provided with a connecting lug seat, one side of the cylinder body is provided with a connecting lug plate, and the connecting pin penetrates through the connecting lug seat and the connecting lug plate to hinge the cylinder body on the shaft sleeve.

The oil cylinder assembly further comprises reducing plates, the reducing plates are arranged on the corresponding cylinder bodies respectively and are opened or closed along with the cylinder bodies, and reducing holes communicated with the oil discharge cavity are formed in the reducing plates.

The anti-counterfeiting device comprises an anti-counterfeiting mechanism, an oil discharging mechanism and a guiding mechanism, wherein the anti-counterfeiting mechanism comprises a joint body and a pressure regulating assembly, the pressure regulating assembly controls the opening and closing of a vent hole on the joint body, so that liquid can be prevented from overflowing from the top of a tubular column under the influence of exciting pressure or gas when the tubular column is lifted, and the oil discharging speed at the bottom of the tubular column can be regulated; the oil discharge mechanism comprises an oil cylinder assembly supported by a support assembly, the oil cylinder assembly is sealed at the joint of the tubular columns, and waste liquid discharged by the tubular columns is collected, so that zero leakage of oil discharge at well mouths can be realized; the sliding assembly drives the oil cylinder assembly to rapidly enter or exit the station through the supporting assembly, so that the operation intensity of workers is reduced; the guide mechanism can output the waste liquid drainage collected by the oil cylinder assembly, and the operation efficiency is high.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an anti-counterfeiting mechanism;

fig. 3 is a schematic structural diagram of the oil cylinder assembly and the shaft sleeve.

In the figure: 1. the anti-counterfeiting device comprises an anti-counterfeiting mechanism, 11 a connector body, 12 mounting threads, 13 threaded assembling holes, 14 vent holes, 15 pressure regulating assemblies, 151 pressure regulating bolts, 152 springs, 153 sealing gaskets, 154 limit nuts, 16 handles, 2 oil discharging mechanisms, 21 oil cylinder assemblies, 211 cylinder bodies, 212 oil discharging cavities, 213 hinges, 214 hasps, 215 passing holes, 216 oil discharging holes, 22 supporting assemblies, 221 supporting rods, 222 shaft sleeves, 223 connecting lug seats, 224 connecting lug plates, 225 connecting pins, 23 sliding assemblies, 231 rails, 232 rollers, 233 sliding blocks, 24 variable diameter plates, 241 variable diameter holes, 25 fixing frames, 3 guiding mechanisms, 31 connecting pipes, 32 sleeve connectors and 4 pipe columns.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in figure 1, the wellhead anti-pollution device for the lifting fluid pipe column comprises an anti-counterfeiting mechanism 1, an oil unloading mechanism 2 and a guide mechanism 3.

In fig. 2, the anti-counterfeiting mechanism 1 includes a joint body 11, a mounting thread 12 is provided on an outer circumferential surface of the joint body 11, a thread assembly hole 13 and a vent hole 14 are provided on a top of the joint body 11, and a pressure regulating assembly 15 for controlling the opening and closing of the vent hole 14 is provided on the thread assembly hole 13.

As shown in fig. 2, in the present invention, the pressure adjusting assembly 15 includes a pressure adjusting bolt 151, a spring 152, a sealing gasket 153, and a stopper nut 154. The pressure regulating bolt 151 coaxially penetrates through the spring 152 and the sealing gasket 153 in sequence, extends out of the joint body 11 through the threaded assembling hole 13 and is in threaded connection with the limiting nut 154, and the spring 152 presses and seals the sealing gasket 153 on the vent hole 14.

When the pressure-regulating valve is used, the joint body 11 is connected to the top of the pipe column 4 through the mounting thread 12, the pressure-regulating bolt 151 is turned, the spring 152 is enabled to reach a preset pre-tightening state, the sealing gasket 153 is pressed and blocked on the vent hole 14, and the position of the pressure-regulating bolt 151 is locked by turning the limiting nut 154. When the pressure in the inner cavities of the pipe column 4 and the joint body 11 is higher, the sealing gasket 153 blocks the vent hole 14, so that liquid is prevented from overflowing from the vent hole 14; during oil discharge, under the action of atmospheric pressure, air can push away the sealing gasket 153 through the air hole 14, so that the negative pressure state in the inner cavities of the pipe column 4 and the joint body 11 is eliminated, and the oil discharge efficiency is improved.

In order to facilitate the handling of the anti-counterfeiting mechanism 1 during the transferring, the anti-counterfeiting mechanism 1 further comprises a handle 16, and as shown in fig. 2, two ends of the handle 16 are welded on the joint body 11.

As shown in fig. 1, the oil discharge mechanism 2 includes an oil drum assembly 21, a support assembly 22, and a sliding assembly 23.

In fig. 1 and 3, the oil cylinder assembly 21 includes two cylinder bodies 211 which are jointed to form an oil relief cavity 212, one side of the two cylinder bodies 211 is connected by a hinge 213, the other side is opened or jointed by a buckle 214, through holes 215 which are communicated with the oil relief cavity 212 are respectively arranged at the top and the bottom of the two cylinder bodies 211, and an oil relief hole 216 which is communicated with the oil relief cavity 212 is arranged at the side surface of one cylinder body 211. When in use, the two cylinders 211 are tightly held at the joint of the pipe column 4 and locked by the buckles 214, the upper end and the lower end of the pipe column 4 respectively extend out from the through holes 215 at the top and the bottom, and when the pipe column 4 is disconnected from the joint, the liquid in the pipe column 4 flows into the oil unloading cavity 212.

As shown in fig. 1, the sliding assembly 23 is disposed on the fixing frame 25, and includes a rail 231, a roller 232 rolling along the rail 231, and a slider 233 supported by the roller 232; one end of the support member 22 is connected to the slider 233, and the other end supports the oil cylinder member 21. Referring to fig. 3, in the present embodiment, the support assembly 22 includes a support rod 221 having a lower end connected to the sliding block 233, and a bushing 222 disposed at an upper end of the support rod 221, wherein the bushing 222 is connected to a cylinder 211, and the bushing 222 freely rotates around the support rod 221. In use, under the connection of the support assembly 22, the oil cylinder assembly 21 is pulled towards the pipe column 4, and the oil cylinder assembly 21 moves towards the pipe column 4 along the rail 231 along the sliding block 233; after oil discharge is completed, the oil cylinder assembly 21 is pulled to the opposite direction of the pipe column 4, and the oil cylinder assembly is not required to be carried by workers, so that the labor intensity of the workers is reduced. The position of the adjustable cylinder 211 is adjusted by rotating the shaft sleeve 222 around the support rod 221, so that the tight holding and sealing of the connection part of the pipe column 4 are facilitated.

As shown in fig. 1, the guide mechanism 3 includes a connection pipe 31 having one end butted against the oil discharge hole 216, and the other end of the connection pipe 31 is provided with a sleeve joint 32. The casing joint 32 can be butted with a casing gate hoop and other components, so that the liquid in the oil discharge cavity 212 can be led out in time, and the anti-pollution purpose is realized.

Example 2

The difference from embodiment 1 is that, as shown in fig. 3, a connecting ear seat 223 is provided on one side of the shaft sleeve 222, a connecting ear plate 224 is provided on one side of the cylinder body 211, and a connecting pin 225 passes through the connecting ear seat 223 and the connecting ear plate 224 to hinge the cylinder body 211 on the shaft sleeve 222.

Through connecting ear seat 223, connection otic placode 224 structure, can further increase the degree of freedom of oil cylinder subassembly 21 gesture, make its and tubular column 4's coaxiality higher, very big degree reduces the problem that causes the spill of unloading because of the restriction of oil cylinder subassembly 21 gesture.

Example 3

The difference from the embodiments 1 and 2 is that, as shown in fig. 3, the oil cylinder assembly 21 further includes diameter-variable plates 24, the diameter-variable plates 24 are respectively disposed on the corresponding cylinder bodies 211, and are opened or closed with the cylinder bodies 211, and diameter-variable holes 241 communicated with the oil relief cavity 212 are opened on the diameter-variable plates 24.

A single size of the pass through hole 215 is not sufficient for different diameter pipe strings 4. The gap between the through hole 215 and the pipe column 4 can be sealed by using the adaptive variable diameter sheet 24, and the liquid in the oil relief cavity 212 is prevented from leaking out.

It should be noted that the number of the variable diameter plates 24 may be multiple according to the diameter of the common pipe column 4, and the variable diameter holes 241 formed in the variable diameter plates 24 are adapted to the corresponding pipe columns 4.

The utility model is used for lifting the operation of the liquid carrying pipe column 4, the oil cylinder component 21 is sealed at the joint of the pipe column 4, and the waste liquid discharged from the pipe column 4 is collected by the cylinder body 211, thus realizing zero leakage of oil discharge at the well mouth and radically solving the problem that the liquid pollutes the surrounding environment of the well mouth; the anti-overflow mechanism 1 can prevent liquid from overflowing from the top of the tubular column 4 when the tubular column 4 is lifted, and can also adjust the oil discharge speed at the bottom of the tubular column 4 to improve the oil discharge efficiency; the supporting component 22 and the sliding component 23 are matched to drive the oil cylinder component 21 to rapidly enter or exit the center of a wellhead, so that the operation of workers is simple; the guide mechanism 3 can guide and output the waste liquid collected by the oil cylinder assembly 21, and the operation efficiency is high; the adaptive variable diameter sheet 24 is used for sealing the gap between the through hole 215 and the pipe column 4, so that the liquid in the oil relief cavity 212 is prevented from leaking out, and the applicability is good.

Although fig. 1 to 2 are used in all the above embodiments, it is apparent to those skilled in the art that separate drawings are not shown as long as parts or structural features missing in the embodiments are removed from the drawings. As will be clear to the person skilled in the art. Of course, the embodiments with more components are only the best embodiments, and the embodiments with less components are the basic embodiments, but the basic object of the utility model can also be achieved, so all the modified embodiments are within the protection scope of the utility model.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a play and take liquid tubular column well head anti-pollution device, its includes anti-counterfeiting mechanism, oil discharge mechanism and guide mechanism, its characterized in that:

the anti-counterfeiting mechanism comprises a connector body, mounting threads are arranged on the peripheral surface of the connector body, a thread assembling hole and an air vent are formed in the top of the connector body, and a pressure regulating assembly for controlling the opening and closing of the air vent is arranged on the thread assembling hole;

2. The lift string wellhead anti-contamination device of claim 1, wherein: the pressure regulating assembly comprises a pressure regulating bolt, a spring, a sealing gasket and a limiting nut, the pressure regulating bolt sequentially and coaxially penetrates through the spring and the sealing gasket, the threaded assembling hole extends out of the connector body and is in threaded connection with the limiting nut, and the spring presses and blocks the sealing gasket on the vent hole.

3. The lift string wellhead anti-contamination device of claim 1, wherein: the anti-counterfeiting mechanism further comprises a lifting handle, and two ends of the lifting handle are fixed on the joint body.

4. The lift string wellhead anti-contamination device of claim 1, wherein: the supporting component comprises a supporting rod and a shaft sleeve, wherein the lower end of the supporting rod is connected with the sliding block, the shaft sleeve is sleeved at the upper end of the supporting rod, the shaft sleeve is connected with a cylinder, and the shaft sleeve freely rotates around the supporting rod.

5. The tripping fluid string wellhead anti-contamination device of claim 4, wherein: and a connecting lug seat is arranged on one side of the shaft sleeve, a connecting lug plate is arranged on one side of the cylinder body, and a connecting pin penetrates through the connecting lug seat and the connecting lug plate to hinge the cylinder body on the shaft sleeve.

6. The lift string wellhead anti-contamination device of claim 1, wherein: the oil cylinder assembly further comprises reducing plates, the reducing plates are arranged on the corresponding cylinder bodies respectively and are opened or closed along with the cylinder bodies, and reducing holes communicated with the oil discharge cavity are formed in the reducing plates.