CN220133931U - Sand setting ball seat device with backwashing function - Google Patents

Abstract

The utility model relates to the technical field of oil and gas pipeline cleaning, in particular to a sand setting ball seat device with a backwashing function, which comprises an upper joint, a lower joint and a sand setting sleeve used for connecting the upper joint and the lower joint, wherein an annular supporting body is fixedly connected to the inner wall of the lower joint, a sand dividing pipe is connected to the inner wall of the annular supporting body through threads, a well washing hole is formed in the side wall of the lower joint, the input end of the sand dividing pipe is communicated with the well washing hole, a water outlet is formed in the side wall of one end, far away from the well washing hole, of the sand dividing pipe, a spring is fixedly connected to one end, close to the water outlet, of the sand dividing pipe, a sealing ball body is placed inside the sand dividing pipe, a sealing ball seat matched with the sealing ball body is fixedly connected to the inner wall of the sand dividing pipe, and a sand prevention component is sleeved at one end, close to the water outlet, so that after well washing is stopped, impurities can be prevented from entering the sand dividing pipe to contact with the sealing ball body along the backwater water, and the sealing ball body is buried or corroded, and the next normal use is affected.

Description

Sand setting ball seat device with backwashing function

Technical Field

The utility model relates to the technical field of oil and gas pipeline cleaning, in particular to a sand setting ball seat device with a backwashing function.

Background

In the production process of an oil gas well, formation sand, impurities and the like are inevitably produced, and long-term deposition can block a production channel or other fluid channels to influence production. Regular cleaning of the inside of the pipeline is often required, and currently, the bottom ball of the oilfield applied to the water injection well is basically a check valve type, and the obvious problem existing in the check valve type is that: the valve ball is easy to be buried by sediment such as sand setting, rust scale and the like, so that the valve ball cannot be opened and can not perform well flushing operation.

Disclosure of Invention

In view of the above problems, an object of the present utility model is to: the sand setting ball seat device with the backwashing function is provided, and after well flushing is stopped, impurities are prevented from entering the sand separating pipe along the backwater water to be contacted with the sealing ball body, so that the sealing ball body is buried or rusted by sediment, and the next normal use is affected.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a sand setting ball seat device with backwash function, includes top connection, lower clutch and is used for connecting the sand setting cover of top connection and lower clutch, fixedly connected with annular support body on the inner wall of lower clutch, the inner wall of annular support body has the sand dividing pipe through threaded connection, the washing hole has been seted up on the lateral wall of lower clutch, the input and the well washing hole intercommunication of sand dividing pipe, the apopore has been seted up on the one end lateral wall that the sand dividing pipe kept away from the washing hole, the one end fixedly connected with spring that the sand dividing pipe is close to the apopore, seal ball has been placed to the inside of sand dividing pipe, fixedly connected with and seal ball adaptation's seal ball seat on the inner wall of sand dividing pipe, the one end cover that the sand dividing pipe is close to the apopore is equipped with sand control subassembly.

The beneficial effects of the utility model are as follows: in the process of cleaning the well body, well flushing liquid enters the sand separating pipe from the well flushing hole, then the sealing ball on the sealing ball seat is pushed to squeeze the spring, and when the sealing ball passes over the other side of the water outlet hole, the well flushing liquid is discharged from the water outlet hole to the space between the sand setting sleeve and the sand separating pipe, and then the inner wall of the well body is cleaned.

In order to make the well-flushing fluid smoothly discharged from the sand separating pipe, and to prevent sand grains sinking from the outside due to gravity from entering the inside of the sand separating pipe.

As a further improvement of the above technical scheme: the sand control assembly comprises a dust filtering cover sleeved outside the sand separating pipe, a ring seal with a plurality of openings is sleeved outside the dust filtering cover, and a plurality of movable sealing doors are hinged at the positions of the openings of the ring seal.

The beneficial effects of this improvement are: after the well flushing liquid pushes the sealing ball body to the other side of the water outlet hole, the well flushing liquid is sprayed from the water outlet hole, after penetrating through the dust filtering cover, the movable sealing door is flushed open to flow to the outside of the sand separating pipe, and when well flushing is stopped, the particles mixed in the well flushing liquid fall down due to gravity, and the dust filtering cover can block the particles so as to prevent the particles from entering the inside of the sand separating pipe.

In order to further ensure that no impurity flows back to the inside of the sand separating pipe at the water outlet.

As a further improvement of the above technical scheme: and one side of the spring, which is close to the sealing sphere, is fixedly connected with a sealing plug, and when the flushing hole stops supplying water, the spring pushes the sealing plug to the water outlet hole to realize sealing.

The beneficial effect of this improvement: when the well flushing is stopped, the spring drives the sealing plug to seal the water outlet, further impurities with backflow are prevented from contacting with the sealing ball body, the sealing plug and the sealing ball body can be subjected to double sealing, and the sealing effect is better.

In order to enable the dirt which has fallen down due to gravity to sink into the tubing when the well flushing is stopped.

As a further improvement of the technical scheme, one end of the lower joint is connected with an oil pipe, the tail end of the oil pipe is sealed in a plug manner, and a sand setting channel is formed between the sand separating pipe and the sand setting sleeve.

The beneficial effects of this improvement are: when the well flushing is stopped, impurities in the sewage inside the oil pipe sink due to gravity and pass through the sand settling channel to fall into the oil pipe connected with the lower joint.

In order to enable the sealing ball to adequately seal the inside of the sand dividing pipe.

As a further improvement of the scheme, the diameter of the sealing sphere is equal to the diameter of the inner wall of the sand separating pipe in the movable stroke length.

The beneficial effect of this improvement: the sealing sphere is equal to the diameter of the inner wall of the sand dividing pipe, so that the inside of the sand dividing pipe can be fully sealed.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the present utility model at A in FIG. 2;

FIG. 4 is a schematic view of the internal structure of the present utility model;

fig. 5 is a cross-sectional view of fig. 4 in accordance with the present utility model.

In the figure: 1. an upper joint; 2. a sand setting sleeve; 3. a lower joint; 4. a support body; 5. a sand separating pipe; 6. washing a well hole; 7. sealing the sphere; 8. a spring; 9. a sealing plug; 10. a water outlet hole; 11. a sand setting channel; 12. sealing in a ring; 13. an opening and closing opening; 14. a movable sealing door; 15. a dust filtering cover; 16. and (5) an oil pipe.

Detailed Description

In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.

As shown in fig. 1 to 5, the sand setting ball seat device with backwash function comprises an upper joint 1, a lower joint 3 and a sand setting sleeve 2 for connecting the upper joint 1 and the lower joint 3, wherein an annular supporting body 4 is fixedly connected to the inner wall of the lower joint 3, a sand separating pipe 5 is connected to the inner wall of the annular supporting body 4 through threads, a well washing hole 6 is formed in the side wall of the lower joint 3, the input end of the sand separating pipe 5 is communicated with the well washing hole 6, a water outlet hole 10 is formed in the side wall of one end, far away from the well washing hole 6, of the sand separating pipe 5, a spring 8 is fixedly connected to one end, close to the water outlet hole 10, of the sand separating pipe 5, a sealing ball 7 is placed in the sand separating pipe 5, a sealing ball seat matched with the sealing ball is fixedly connected to the inner wall of the sand separating pipe 5, a sand preventing assembly is sleeved at one end, close to the water outlet hole 10, during the well washing process, the well flushing liquid enters the sand separating pipe 5 from the well flushing hole 6, then pushes the sealing ball 7 on the sealing ball seat to squeeze the spring 8, when the sealing ball 7 passes through the other side of the water outlet hole 10, the well flushing liquid is discharged from the water outlet hole 10 to the space between the sand setting sleeve 2 and the sand separating pipe 5, then the inner wall of the well body is cleaned, the sand preventing assembly comprises a dust filtering cover 15 sleeved outside the sand separating pipe 5, the dust filtering cover 15 is externally sleeved with a ring seal 12 with a plurality of openings 13, a plurality of movable sealing doors 14 are hinged at the openings 13 of the ring seal 12, after the well flushing liquid pushes the sealing ball 7 to the other side of the water outlet hole 10, the well flushing liquid is sprayed from the water outlet hole 10, after passing through the dust filtering cover 15, the movable sealing doors 14 are flushed out to the outside of the sand separating pipe 5, when the well flushing is stopped, the mixed particles in the well flushing liquid can be blocked by the dust filtering cover 15 due to the falling of gravity, avoid the particulate matter to enter into the inside of dividing sand pipe 5, one side fixedly connected with sealing plug 9 that spring 8 is close to sealed spheroid 7, works as when wash-out hole 6 stops supplying water, spring 8 promotes sealing plug 9 to apopore 10 position and realizes the shutoff, and when stopping the wash-out, spring 8 drives sealing plug 9 and carries out the shutoff to apopore 10, and further impurity that avoids having backward flow contacts with sealed spheroid 7, and sealing plug 9 and sealed spheroid 7 can realize double shutoff and seal, and sealed effect is better, the one end of sub-head 3 is connected with oil pipe 16, the end of oil pipe 16 adopts the mode of plug to seal, divide to be formed with sand channel 11 between sand pipe 5 and the sand cover 2, and when stopping the wash-out, impurity in the sewage of oil pipe 16 is owing to gravity subsides, passes sand channel and falls into in the oil pipe 16 that is connected with sub-head 3, the diameter of sealed spheroid 7 equals with the inside diameter of dividing sand pipe 5 in its movable stroke length, and the diameter of the inner wall of sealing spheroid 7 equals that divides sand pipe 5, can be abundant to divide the inside of pipe 5 to seal.

The working principle of the utility model is as follows: in the process of flushing, flushing liquid enters the sand separating pipe 5 from the flushing hole 6, along with the pressure increase of the flushing liquid, the flushing liquid impacts the sealing sphere 7, the sealing sphere 7 is in conflict extrusion with the sealing plug 9, the sealing sphere 7 and the sealing plug 9 move towards the compression direction of the spring 8, then the flushing liquid is sprayed out of the water outlet 10, the sprayed flushing liquid flushes the movable sealing gate 14, the flushing liquid flows between the sand separating pipe 5 and the sand separating sleeve, flushing is realized, impurities in the well body flow out along the flushing liquid, in the process of stopping flushing, the movable sealing gate 14 reseals with the ring seal 12 due to gravity, the spring 8 drives the sealing plug 9 to seal the water outlet 10, the sealing sphere 7 falls on the sealing ball seat due to gravity again to seal the water outlet, dirt contained in the flushing liquid in the well body falls down due to gravity, the ring seal 12 and the movable sealing gate 14 can not enter the sand separating pipe 5, the movable sealing gate 14 falls into the oil pipe 16 below the lower joint through the settling channel 11, the bottom of the oil pipe 16 adopts the length of the oil pipe to seal the oil pipe and the water pipe can be manually flushed out from the bottom of the well according to the amount of the sand layer.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the utility model, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the utility model, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or applications of the concepts and aspects of the utility model in other applications without modification, are contemplated as falling within the scope of the utility model.

Claims (5)

1. The utility model provides a sand setting ball seat device with backwash function, includes top connection (1), lower clutch (3) and is used for connecting sand setting cover (2) of top connection (1) and lower clutch (3), its characterized in that: the utility model discloses a sand control device, including lower joint (3) and sand control pipe, fixed connection annular support body (4) on the inner wall of lower joint (3), the inner wall of annular support body (4) is through threaded connection divide sand pipe (5), wash well hole (6) have been seted up on the lateral wall of lower joint (3), the input and the wash well hole (6) intercommunication of divide sand pipe (5), divide sand pipe (5) to keep away from and offered apopore (10) on the one end lateral wall of wash well hole (6), divide sand pipe (5) to be close to the one end fixedly connected with spring (8) of apopore (10), divide the inside of sand pipe (5) to have placed sealed spheroid (7), divide fixedly connected with and sealed ball seat of sealed ball adaptation on the inner wall of sand pipe (5), divide sand pipe (5) to be close to the one end cover of apopore (10) to be equipped with sand control subassembly.

2. The sand setting ball seat device with backwash function according to claim 1, wherein: the sand control assembly comprises a dust filtering cover (15) sleeved outside the sand separating pipe (5), a ring seal (12) with a plurality of opening (13) is sleeved outside the dust filtering cover (15), and a plurality of movable sealing doors (14) are hinged at the positions of the opening (13) of the ring seal (12).

3. The sand setting ball seat device with backwash function according to claim 1, wherein: one side of the spring (8) close to the sealing sphere (7) is fixedly connected with a sealing plug (9), and when the well flushing hole (6) stops supplying water, the spring (8) pushes the sealing plug (9) to the position of the water outlet hole (10) to realize sealing.

4. The sand setting ball seat device with backwash function according to claim 1, wherein: one end of the lower joint (3) is connected with an oil pipe (16), the tail end of the oil pipe (16) is sealed in a plug manner, and a sand setting channel (11) is formed between the sand separating pipe (5) and the sand setting sleeve (2).

5. The sand setting ball seat device with backwash function according to claim 1, wherein: the diameter of the sealing sphere (7) is equal to the diameter of the inner wall of the sand separating pipe (5) in the movable stroke length.