CN220929352U

CN220929352U - Underground pressure-controlled circulation switch valve

Info

Publication number: CN220929352U
Application number: CN202322611500.6U
Authority: CN
Inventors: 张跃; 陈文革
Original assignee: Nanjing Cosol Energy Technology Co ltd
Current assignee: Nanjing Cosol Energy Technology Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-05-10
Anticipated expiration: 2033-09-26

Abstract

The utility model discloses a downhole pressure-controlled circulation switch valve, which relates to the field of drilling and mining and comprises a valve body, wherein the upper surface of the valve body is fixedly connected with a valve head through a connecting piece, the lower side of the surface of the valve body is fixedly connected with a valve tail, the surface of the valve body is fixedly connected with two symmetrically arranged connecting rings, the surfaces of the two connecting rings are fixedly connected with protective rings, the four sides of the surfaces of the protective rings are provided with grooves, the inner walls of a plurality of the grooves are fixedly connected with two symmetrically arranged telescopic rods, and the walls of the telescopic ends of the telescopic rods are sleeved with sleeve springs. The utility model can protect the surface of the pressure-controlled circulation switch valve when the pressure-controlled circulation switch valve is put into the well, prevent the pressure-controlled circulation switch valve from being scratched and broken by the sand and stones and the bulges on the inner wall of the underground installation space when the pressure-controlled circulation switch valve is put into the well, greatly prolong the service life of the device and reduce the maintenance and cleaning cost of the surface of the pressure-controlled circulation switch valve.

Description

Underground pressure-controlled circulation switch valve

Technical Field

The utility model relates to the field of drilling and mining, in particular to a downhole pressure-controlled circulation switch valve.

Background

The low-permeability oil and gas field is an important resource for the stable development of petroleum industry in China, the hydraulic fracturing technology is an important means for economically and effectively developing low-permeability oil and gas reservoirs, and most of oil and gas reservoirs such as Chou gas field, erdos gas field and the like are longitudinally multi-layered, have large span and complex gas and water relationship, are difficult to realize layer-by-layer transformation by adopting the conventional fracturing means, and cannot improve the small-layer utilization degree so as to improve the yield. Therefore, the coiled tubing fracturing technology gradually attracts attention of petroleum technicians, integrates the superiority of hydraulic jetting and perforation fixed-point fracturing and the dragging flexibility of the coiled tubing, and provides a new approach for solving the problem of longitudinal multilayer transformation. So far, domestic research on internal blowout prevention tools of the oil pipe is mature, and the combination fracturing technology of continuous oil pipe staged fracturing, continuous oil pipe sand blasting perforation and casing sand fracturing is just started, and the method only stays on the conventional oil pipe transmission fracturing technology, so that the requirements on the size of the continuous oil pipe and the internal blowout prevention tools are too severe to be applied to deep layers.

At present, when the underground operation of an oil field is carried out, a pressure-controlled circulation switch valve is often used, when the existing pressure-controlled circulation switch valve is used, the existing pressure-controlled circulation switch valve is required to be put into the underground, but the inner wall surface of an underground installation space is provided with a large amount of silt stones, and the inner wall surface of the underground installation space is provided with a large amount of protruding parts, so that the surface of the pressure-controlled circulation switch valve is often rubbed and impacted when the pressure-controlled circulation switch valve is put into the underground installation space, and the service life of the device is greatly reduced for a long time.

Therefore, it is necessary to invent a downhole pressure controlled cycle switching valve to solve the above problems.

Disclosure of Invention

The utility model aims to provide a downhole pressure-controlled circulation switch valve, which solves the problems that the surface of the inner wall of a downhole installation space provided in the background technology is provided with a large amount of silt stones, and the surface of the inner wall of the downhole installation space is provided with a large amount of protruding parts, so that the surface of the pressure-controlled circulation switch valve is often rubbed and impacted when the pressure-controlled circulation switch valve is put in, and the service life of the device is greatly reduced for a long time.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the underground pressure-controlled circulation switch valve comprises a valve body, wherein a valve plate is arranged on the inner wall of the valve body, the upper surface of the valve body is fixedly connected with a valve head through a connecting piece, the lower side of the surface of the valve body is fixedly connected with a valve tail, the surface of the valve body is fixedly connected with two symmetrically arranged connecting rings, and the surfaces of the two connecting rings are fixedly connected with protective rings;

The four sides on guard ring surface all set up the recess, two the equal fixedly connected with rubber lasso in surface of guard ring, a plurality of the equal fixedly connected with of inner wall of recess two telescopic links that the symmetry set up, a plurality of the telescopic end pipe wall of telescopic link has all cup jointed the cover spring, two corresponding the equal fixedly connected with arc board of telescopic end of telescopic link, a plurality of the spacing groove has all been seted up to the inner wall upper surface and the lower surface of recess, a plurality of the upper surface and the lower surface of arc board respectively with corresponding spacing groove inner wall sliding connection, a plurality of the equal fixedly connected with of one side surface of arc board two first connecting pieces that the symmetry set up, a plurality of the equal fixedly connected with tensioning piece of inner wall of first connecting piece.

Preferably, the surface of the valve body is fixedly connected with a blocking annular ring, and the upper surface of the blocking annular ring is fixedly connected with a rubber cylinder.

Preferably, the directional grooves are formed in two sides of the surface of the valve body, the inner walls of the directional grooves are slidably connected with directional sliding blocks, and the surfaces of the opposite sides of the two directional sliding blocks are fixedly connected with compression rings.

Preferably, the limiting plates are fixedly connected to two sides of the lower surface of one connecting ring, the pushing rings are connected to the surfaces of the limiting plates in a sliding mode, grooves are formed in two sides of the upper surface of each pushing ring, and the inner walls of the grooves are respectively connected with the surfaces of the corresponding limiting plates in a sliding mode.

Preferably, the connecting piece includes two second connecting pieces, two the upper surface of second connecting piece respectively with the lower surface both sides fixed connection of valve head, one of them the circular slot has been seted up to the upper surface of go-between, two the lower surface of second connecting piece all extends to the inner wall of circular slot, the circular slot has been seted up to the surface upside of valve body, two the lower surface of second connecting piece all rotates with the inner wall of circular slot through the roller and is connected.

Preferably, the rolling device comprises a rotary connecting piece, one end of the rotary connecting piece is rotationally connected with the lower surface of one side of the second connecting piece, the other end of the rotary connecting piece is rotationally connected with a rotary piece, and the surface of the rotary piece is rotationally connected with the inner wall of the circular groove.

The utility model has the technical effects and advantages that:

Through setting up guard ring, recess, telescopic link, cover spring, arc board, spacing groove, first connecting piece, tensioning piece to can protect the surface of voltage-controlled circulation switch valve when voltage-controlled circulation switch valve is put into in the pit, prevent when putting into by silt stone and protruding scratch and the bumping of installation space inner wall in the pit, great improvement the life of device and reduced the cost of voltage-controlled circulation switch valve surface maintenance clearance.

Through setting up and hinder annular circle, packing element, push ring, clamping ring, directional groove, directional sliding block, limiting plate, fluting of effect to can extrude the packing element when the device gets into installation space in the pit, make it take place deformation, seal the inner wall of installation space in the pit.

Through setting up circular slot, second connecting piece, rotating piece, circular slot to can make the connected mode of device simpler, and can prevent that the device from taking place not hard up with the device that is connected when carrying out the rotation, lead to device seal failure, guaranteed sealed stability.

Drawings

Fig. 1 is a schematic front sectional structure of the present utility model.

FIG. 2 is a schematic diagram of a front cross-sectional structure of a guard ring according to the present utility model.

FIG. 3 is a schematic perspective view of a guard ring according to the present utility model.

Fig. 4 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.

Fig. 5 is an enlarged schematic view of the structure of fig. 1B according to the present utility model.

In the figure: 1. a valve body; 2. a valve head; 3. a valve tail; 4. a connecting ring; 5. a protective ring; 6. a groove; 7. sleeving a spring; 8. an arc plate; 9. a telescopic rod; 10. a limit groove; 11. a first connector; 12. a tensioning member; 13. a blocking annular ring; 14. a rubber cylinder; 15. a push ring; 16. a compression ring; 17. a directional groove; 18. a directional slider; 19. a limiting plate; 20. slotting; 21. a circular groove; 22. a second connector; 23. rotating the connecting piece; 24. a rotating member; 25. a circular groove; 26. a rubber ferrule; 27. and a valve plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a downhole pressure-controlled circulation switching valve as shown in figures 1-5, which comprises a valve body 1, wherein a valve plate 27 is arranged on the inner wall of the valve body 1 and is a structure for opening and closing the valve body 1, and the valve body is of a conventional use structure in the field, and the valve is not excessively described herein, the upper surface of the valve body 1 is fixedly connected with a valve head 2 through a connecting piece, the lower side of the surface of the valve body 1 is fixedly connected with a valve tail 3, the surface of the valve body 1 is fixedly connected with two symmetrically arranged connecting rings 4, the surfaces of the two connecting rings 4 are fixedly connected with protective rings 5, and the pressure-controlled circulation switching valve has some basic structures, so that the pressure-controlled circulation switching valve can be normally used;

as shown in fig. 2-3, recess 6 is all offered on four sides on the protection ring 5 surface, the equal fixedly connected with rubber lasso 26 in surface of two protection rings 5, can prevent rivers from passing between this device, start sealed effect, the equal fixedly connected with telescopic link 9 of the equal fixedly connected with of inner wall of a plurality of recesses 6, sleeve spring 7 has all been cup jointed to the telescopic end pipe wall of a plurality of telescopic links 9, the equal fixedly connected with arc board 8 of telescopic end of two corresponding telescopic links 9, limit groove 10 has all been offered to the inner wall upper surface and the lower surface of a plurality of recesses 6, the upper surface and the lower surface of a plurality of arc boards 8 respectively with corresponding limit groove 10 inner wall sliding connection, the equal fixedly connected with of one side surface of a plurality of arc boards 8 is first connecting piece 11 of two symmetry settings, the equal fixedly connected with tensioning piece 12 of the inner wall of a plurality of first connecting piece 11, can protect the surface of pressure-controlled circulation switch valve when putting into the pit, prevent to be scratched and bumped by silt and the protruding of installation space inner wall in the pit when putting into, the pressure-controlled circulation switch valve maintenance cost of life-span device has been greatly improved and the pressure-controlled circulation switch surface has reduced.

As shown in fig. 1 and 4, the connecting piece includes two second connecting pieces 22, the upper surfaces of two second connecting pieces 22 are fixedly connected with both sides of the lower surface of the valve head 2 respectively, the upper surface of one connecting ring 4 is provided with a circular groove 21, the lower surfaces of two second connecting pieces 22 all extend to the inner wall of the circular groove 21, the upper side of the surface of the valve body 1 is provided with a circular groove 25, the lower surfaces of two second connecting pieces 22 are all rotationally connected with the inner wall of the circular groove 25 through a rolling device, the rolling device comprises a rotating connecting piece 23, one end of the rotating connecting piece 23 is rotationally connected with one side lower surface of the second connecting piece 22, the other end of the rotating connecting piece 23 is rotationally connected with a rotating piece 24, the surface of the rotating piece 24 is rotationally connected with the inner wall of the circular groove 25, the connecting mode of the device can be simpler, the device can be prevented from loosening when the device is rotated, the sealing failure of the device is caused, and the sealing stability is ensured.

As shown in fig. 1 and 5, the surface of the valve body 1 is fixedly connected with a blocking annular ring 13, the upper surface of the blocking annular ring 13 is fixedly connected with a rubber cylinder 14, both sides of the surface of the valve body 1 are provided with directional grooves 17, the inner walls of the two directional grooves 17 are all connected with directional sliding blocks 18 in a sliding manner, the surfaces of the opposite sides of the two directional sliding blocks 18 are fixedly connected with a compression ring 16 together, both sides of the lower surface of one connecting ring 4 are fixedly connected with limiting plates 19, the surfaces of the two limiting plates 19 are fixedly connected with a push ring 15 in a sliding manner, both sides of the upper surface of the push ring 15 are provided with grooves 20, the inner walls of the two grooves 20 are respectively connected with the surfaces of the corresponding limiting plates 19 in a sliding manner, so that the rubber cylinder 14 can be extruded when the device enters an underground installation space, deformation can be caused, and the inner wall of the underground installation space is sealed.

The working principle of the utility model is as follows: putting the pressure-controlled circulation switch valve into the pit, sliding the tensioning piece 12 connected with the inner wall of the two protective rings 5 to be connected with the inner wall of the underground installation space when putting the pressure-controlled circulation switch valve into the pit, then contacting with silt stones through the tensioning piece 12 when silt is poured into the inner wall of the underground installation space, thereby preventing the surface of the pressure-controlled circulation switch valve from being scratched, then contracting the tensioning piece 12 by extrusion force when encountering a bulge, contracting the tensioning piece into a groove 6 formed in the surface of the protective rings 5, wherein the groove 6 adopts an arc-shaped design, and is contacted with the bulge through the protective rings 5 to protect the surface of the pressure-controlled circulation switch valve and the roller, the sleeve spring 7 loses extrusion when leaving the bulge, and the sleeve spring 7 is matched with the telescopic rod 9 to drive the arc plate 8 and the tensioning piece 12 to be unfolded to contact with the inner wall of the underground installation space;

when reaching certain degree of depth, push ring 15 receives the pressure and descends, and push ring 15 applys pressure to clamping ring 16, and clamping ring 16 cooperation directional slider 18 and directional groove 17 move downwards, and clamping ring 16 carries out the pressure testing to the upper surface of packing element 14, and clamping ring 16 cooperation resistance annular ring 13 makes packing element 14 take place deformation, then packing element 14 seals the inner wall of installation space in the pit.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a pressure-controlled circulation ooff valve in pit, includes valve body (1), its characterized in that: the valve is characterized in that a valve plate (27) is arranged on the inner wall of the valve body (1), the upper surface of the valve body (1) is fixedly connected with a valve head (2) through a connecting piece, the lower side of the surface of the valve body (1) is fixedly connected with a valve tail (3), the surface of the valve body (1) is fixedly connected with two symmetrically arranged connecting rings (4), and the surfaces of the two connecting rings (4) are fixedly connected with a protective ring (5);

Two recess (6) are all offered to four sides on protection washer (5) surface, two the equal fixedly connected with rubber lasso (26) of surface of protection washer (5), a plurality of the equal fixedly connected with of inner wall of recess (6) telescopic link (9) that two symmetries set up, a plurality of telescopic link (9) telescopic end pipe wall has all cup jointed cover spring (7), two corresponding the equal fixedly connected with arc board (8) of telescopic link (9), a plurality of spacing groove (10) have all been offered to the inner wall upper surface and the lower surface of recess (6), a plurality of the upper surface and the lower surface of arc board (8) respectively with corresponding spacing groove (10) inner wall sliding connection, a plurality of the equal fixedly connected with of one side surface of arc board (8) two symmetrical first connecting piece (11), a plurality of the equal fixedly connected with tensioning piece (12) of inner wall of first connecting piece (11).

2. The downhole pressure controlled cycle switching valve of claim 1, wherein: the surface of the valve body (1) is fixedly connected with a blocking annular ring (13), and the upper surface of the blocking annular ring (13) is fixedly connected with a rubber cylinder (14).

3. The downhole pressure controlled cycle switching valve of claim 1, wherein: the valve is characterized in that the two sides of the surface of the valve body (1) are provided with directional grooves (17), the inner walls of the two directional grooves (17) are connected with directional sliding blocks (18) in a sliding mode, and the surfaces of the opposite sides of the two directional sliding blocks (18) are fixedly connected with compression rings (16) together.

4. The downhole pressure controlled cycle switching valve of claim 1, wherein: one of them the lower surface both sides of go-between (4) all fixedly connected with limiting plate (19), two the common sliding connection in surface of limiting plate (19) has push away ring (15), the fluting (20) have all been seted up to the upper surface both sides of push away ring (15), two the inner wall of fluting (20) respectively with corresponding limiting plate (19) surface sliding connection.

5. The downhole pressure controlled cycle switching valve of claim 1, wherein: the connecting piece includes two second connecting pieces (22), two the upper surface of second connecting piece (22) respectively with the lower surface both sides fixed connection of valve head (2), one of them circular slot (21) has been seted up to the upper surface of go-between (4), two the inner wall that the lower surface of second connecting piece (22) all extends to circular slot (21), circular slot (25) have been seted up to the surface upside of valve body (1), two the lower surface of second connecting piece (22) is all rotated through the inner wall of rolling ware and circular slot (25) and is connected.

6. The downhole pressure controlled cycle switching valve of claim 5, wherein: the rolling device comprises a rotating connecting piece (23), one end of the rotating connecting piece (23) is rotationally connected with the lower surface of one side of a second connecting piece (22), the other end of the rotating connecting piece (23) is rotationally connected with a rotating piece (24), and the surface of the rotating piece (24) is rotationally connected with the inner wall of a circular groove (25).