CN218816338U - Underground switch valve - Google Patents

Abstract

The utility model relates to a downhole tool field, concretely relates to switching valve in pit. Including the urceolus, it is provided with the core pipe to slide in the urceolus, be equipped with the last hole that communicates the urceolus inner wall on the core pipe section of thick bamboo wall, seted up down the hole on the urceolus of going up the hole below, the core pipe lower extreme is fixed with the square sleeve, the urceolus internal fixation of square sleeve below has the inner panel, the rectangular channel has been seted up on the inner panel, the square sleeve lower extreme allows to enter into the rectangular channel in, square sleeve lower extreme one side elasticity rotates and is connected with the drive plate, the drive plate one end of keeping away from the shrouding has coincidence portion with the inner panel, be fixed with the shrouding on the drive plate, the shrouding carries out the shutoff to the square sleeve lower extreme. The utility model discloses rotate shrouding elasticity and connect on the square sleeve of core pipe lower extreme, take out the core pipe from the urceolus and can maintain the sealed face of shrouding and square sleeve, or conveniently change the shrouding.

Description

Underground switch valve

Technical Field

The utility model relates to a downhole tool field, concretely relates to switching valve in pit.

Background

Oil and gas wells are typically drilled deep into the ground using a drilling rig and the oil and gas are then directed out of the subsurface to the surface. In the process of constructing the oil and gas well, because of uncertain factors such as the temperature and the pressure of underground fluid, channels such as a drill rod, a sleeve pipe and an oil pipe need to be subjected to on-off control or throttling control underground in the processes of oil and gas drilling, logging, well cementation, well completion and testing, so that the well construction engineering of the oil and gas well can be safely carried out.

Patent document CN201410488201.0 entitled "a downhole pressure-controlled circulation on-off valve" discloses an on-off valve for blocking a medium passage by using a shutter plate 8 elastically and rotatably connected to a valve main body 2. After the oil pipe is pressurized, the pressure is pressurized from the oil pressure liquid inlet hole 13 of the mandrel, a pressure difference is formed between the pressure and the pressure in the inner cavity of the sleeve pressure liquid inlet hole 14 of the valve main body 2, and when the pressure of the oil pipe is 6-10MPa greater than the sleeve pressure, the mandrel 4 descends, and the flashboard 8 is opened. On the contrary, when the sleeve pressure is 2-4MPa higher than the oil pressure, the mandrel moves upwards, and the flashboard 8 is closed due to the torsion of the pin shaft spring 9. The shutter plate 8 described in this patent is mounted in the valve body.

The patent document with the application number of CN202121850595.1 and the invention name of 'an electrically controlled downhole switch valve for oil and gas well' discloses a switch valve which blocks a medium channel by a valve plate 4 rotatably connected in a valve plate chamber 3 of a valve body. When the medium channel needs to be closed, specific currents are introduced into the first electromagnet 91 at the bottom of the valve plate chamber 3 and the second electromagnet 92 of the valve plate 4, so that a mutually repulsive magnetic field is generated between the valve plate chamber 3 and the valve plate 4, the valve plate 4 is pushed to approach the sealing surface 5 around the pivot structure 6, the magnetic field generated by the third electromagnet 93 in the sealing surface 5 attracts the valve plate 4 to be attached to the sealing surface 5, at the moment, the currents introduced into the first electromagnet 91 of the valve plate chamber 3 are cut off, and the channel of the downhole switching valve is closed.

In the switching valves disclosed in the above two patent documents, the plugging members for closing the medium passages are all rotatably connected in the valve body, so that the assembly of the plugging members is inconvenient and the maintenance is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an easy assembling can reduction in production cost, makes things convenient for the downhole switch valve of later stage maintenance.

In order to realize the purpose, the utility model provides a technical scheme is:

the utility model provides an underground switch valve, including the urceolus, it is provided with the core pipe to slide in the urceolus, be equipped with the last hole that communicates the urceolus inner wall on the core pipe section of thick bamboo wall, the hole has been seted up down on the urceolus of going up the hole below, the core pipe lower extreme is fixed with the square sleeve, the urceolus internal fixation of square sleeve below has the inner panel, the rectangular channel has been seted up on the inner panel, square sleeve lower extreme is allowed to enter into the rectangular channel in, square sleeve lower extreme one side elastic rotation is connected with the drive plate, the drive plate one end of keeping away from the shrouding has coincidence portion with the inner panel, be fixed with the shrouding on the drive plate, the shrouding carries out the shutoff to the square sleeve lower extreme.

Specifically, one side of the lower end of the square sleeve is provided with a groove, an ear seat is fixed in the groove, the drive plate is rotatably connected in the ear seat, and the drive plate is connected with the ear seat through a torsion spring.

Specifically, the upper end of the core pipe is fixed with an elastic claw protruding outwards, and the inner wall of the outer barrel is provided with a ring groove matched with the elastic claw.

Specifically, the lower end of the core pipe on one side of the square sleeve is fixedly provided with a vertical anti-rotation rod, and the anti-rotation rod penetrates through the inner plate and is in sliding fit with the inner plate.

Specifically, a stop block is fixed on the outer side of the square sleeve and is allowed to be in contact with the upper end of the inner plate.

Specifically, the upper end of the outer barrel is fixedly connected with an upper joint.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses rotate shrouding elasticity and connect on the square sleeve of core pipe lower extreme, take out the core pipe from the urceolus and can maintain the sealed face of shrouding and square sleeve, or conveniently change the shrouding.

2. The shrouding elasticity rotates to be connected on the square cover of core pipe lower extreme, and the convenience assembles the shrouding, can improve the production packaging efficiency of this ooff valve, has reduced the production degree of difficulty.

3. Core pipe, square sheath and shrouding are down back, and the shrouding is allowed to be opened, and it can be effectively stabilized after the shrouding is opened, avoids shrouding self-closing and cuts the medium passageway, and job stabilization performance is good.

Drawings

Fig. 1 is a schematic view of the inside of the present invention.

FIG. 2 is a bottom view of the core tube in cooperation with the square sleeve.

Fig. 3 is an enlarged view of the area a in fig. 1.

Fig. 4 is a schematic view after the media channel is opened.

Part names in the drawings are as follows:

1. outer cylinder

2. Upper joint

3. Elastic claw

4. Core tube

5. Upper hole

6. Lower hole

7. Square sleeve

8. Anti-rotation rod

9. Inner plate

10. Sealing plate

11. Driving board

12. Stop block

13. Ear seat

14. Torsion spring

15. Groove

16. Ring groove

17. A rectangular groove.

Detailed Description

As shown in fig. 1 to 4, the downhole switch valve comprises an outer cylinder 1, wherein an upper joint 2 is fixedly connected to the upper end of the outer cylinder 1. The outer barrel 1 is internally provided with a core pipe 4 in a sliding manner, the wall of the core pipe 4 is provided with an upper hole 5 communicated with the inner wall of the outer barrel 1, the outer barrel 1 below the upper hole 5 is provided with a lower hole 6, the upper end of the core pipe 4 is fixed with an elastic claw 3 protruding outwards, and the inner wall of the outer barrel 1 is provided with a ring groove 16 matched with the elastic claw 3.

The core pipe 4 lower extreme is fixed with square sleeve 7, and 1 internal fixation of urceolus below square sleeve 7 has inner panel 9, has seted up rectangular channel 17 on the inner panel 9, and 7 lower extremes of square sleeve are allowed to enter into rectangular channel 17 in, and 7 lower extreme one side elasticity of square sleeve is rotated and is connected with drive plate 11, recess 15 has been seted up to 7 lower extreme one side of square sleeve, and recess 15 internal fixation has ear seat 13, and drive plate 11 rotates to be connected in ear seat 13, and drive plate 11 passes through torsional spring 14 with ear seat 13 and is connected.

One end of a driving plate 11 far away from the sealing plate 10 and the inner plate 9 are provided with an overlapped part, the sealing plate 10 is fixed on the driving plate 11, and the sealing plate 10 seals the lower end of the square sleeve 7. A stop 12 is fixed on the outer side of the square sleeve 7, and the stop 12 is allowed to be contacted with the upper end of the inner plate 9. The sealing plate 10 is elastically and rotatably connected to the square sleeve 7 at the lower end of the core tube 4, and the sealing surface between the sealing plate 10 and the square sleeve 7 can be maintained or the sealing plate 10 can be conveniently replaced by taking the core tube 4 out of the outer cylinder 1. The shrouding 10 elasticity is rotated and is connected on the square sleeve 7 of core pipe 4 lower extreme, conveniently assembles shrouding 10, can improve the production packaging efficiency of this ooff valve, has reduced the production degree of difficulty.

The lower end of the core tube 4 on one side of the square sleeve 7 is fixed with a vertical anti-rotation rod 8, and the anti-rotation rod 8 penetrates through the inner plate 9 and is in sliding fit with the inner plate. Under the action of the cooperation of the anti-rotation rod 8 and the inner plate 9, after the core tube 4 is assembled in the outer barrel 1, the core tube 4 can be prevented from rotating, and the square sleeve 7 is ensured to be effectively aligned with the rectangular groove 17.

After the switch valve is put into a well, the pressure in the upper hole 5 is equal to the pressure in an oil pipe, the pressure in the lower hole 6 is equal to the pressure in the oil sleeve annulus, when the oil pipe is pressed, the pressure is pressed by the upper hole 5, the pressure in the core pipe 4 and the pressure in the inner cavity of the lower hole 6 form a pressure difference, when the pressure in the core pipe 4 is greater than the pressure in the oil sleeve annulus, the core pipe 4 moves downwards, and the elastic claw 3 moves downwards along with the core pipe 4 and is separated from the annular groove 16. When the core pipe 4 descends, under the blocking effect of the inner plate 9 on the part of the driving plate 11, the driving plate 11 can drive the sealing plate 10 to rotate, the torsion spring 14 stores power, when the stop block 12 is in contact with the upper end of the inner plate 9, the sealing plate 10 and the driving plate 11 are changed into a vertical state, and at the moment, the medium channel is opened.

On the contrary, when the pressure of the oil sleeve annulus is greater than the pressure in the oil pipe, the core pipe 4 moves upwards, the sealing plate 10 and the driving plate 11 are restored under the elastic force of the torsion spring 14, the sealing plate 10 seals the lower end of the square sleeve 7 under the torsion action of the torsion spring 14, and at the moment, the sealing plate 10 changes to be in a horizontal state.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. The utility model provides an underground switch valve, including urceolus (1), it is provided with core pipe (4) to slide in urceolus (1), be equipped with last hole (5) that communicate urceolus (1) inner wall on core pipe (4) section of thick bamboo wall, hole (6) down have been seted up on urceolus (1) of going up hole (5) below, a serial communication port, core pipe (4) lower extreme is fixed with square cover (7), urceolus (1) internal fixation below square cover (7) has inner panel (9), rectangular channel (17) have been seted up on inner panel (9), square cover (7) lower extreme is allowed to enter into rectangular channel (17) in, square cover (7) lower extreme one side elastic rotation is connected with drive plate (11), drive plate (11) one end of keeping away from shrouding (10) has coincidence portion with inner panel (9), be fixed with shrouding (10) on drive plate (11), shrouding (10) carry out the shutoff to square cover (7) lower extreme.

2. A downhole switch valve according to claim 1, wherein one side of the lower end of the square sleeve (7) is provided with a groove (15), an ear seat (13) is fixed in the groove (15), the driving plate (11) is rotatably connected in the ear seat (13), and the driving plate (11) is connected with the ear seat (13) through a torsion spring (14).

3. A downhole switching valve according to claim 1, wherein the upper end of the core tube (4) is fixed with an outwardly protruding resilient claw (3), and the inner wall of the outer cylinder (1) is provided with a ring groove (16) which is engaged with the resilient claw (3).

4. A downhole on-off valve according to claim 1, wherein a vertical anti-rotation rod (8) is fixed to the lower end of the core tube (4) on one side of the square sleeve (7), and the anti-rotation rod (8) penetrates through the inner plate (9) and is in sliding fit with the inner plate.

5. A downhole switching valve according to claim 1, wherein a stop (12) is fixed to the outer side of the square sleeve (7), the stop (12) allowing contact with the upper end of the inner plate (9).

6. A downhole switching valve according to claim 1, wherein an upper joint (2) is fixedly connected to the upper end of the outer cylinder (1).

Images