CN208777954U - A kind of anti-flushing well sand-settling device - Google Patents
A kind of anti-flushing well sand-settling device Download PDFInfo
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- CN208777954U CN208777954U CN201821131463.1U CN201821131463U CN208777954U CN 208777954 U CN208777954 U CN 208777954U CN 201821131463 U CN201821131463 U CN 201821131463U CN 208777954 U CN208777954 U CN 208777954U
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Abstract
The utility model is a kind of anti-flushing well sand-settling device, during the anti-flushing well of petroleum industry oil-water well, can precipitate the sand grains and dirt generated in washing well process, prevent well-flushing obstructed.This sand-settling device includes top connection, lower contact and ball sealer, the outside of this sand-settling device is sequentially connected top connection, outer cylinder, flow-dividing main body and lower contact from top to bottom, the inside of this sand-settling device is sequentially connected the blind chamber cavity in center of back of the body cap, flow tube, seal and flow-dividing main body from top to bottom and blind plugging, blind plugging are connect with seal by shear pin；Spring and ball sealer are housed between back of the body cap and blind plugging, the tube body of flow tube is equipped with through hole, and the ontology outside the blind chamber in flow-dividing main body center is equipped with sand setting channel, and radial flowing hole is connected to the blind chamber in the center of flow-dividing main body；The annular space formed between seal, flow tube and back of the body cap and the outer cylinder connected above the blind chamber in flow-dividing main body center is connected to sand setting channel.Effectively shorten the construction period, avoid well-flushing it is obstructed caused by various drawbacks.
Description
Technical field
The utility model relates to petroleum industry underground anti-flushing well tool, especially a kind of anti-flushing well sand-settling device, in anti-flushing well
During, the sand grains and dirt generated in washing well process can be precipitated, prevents well-flushing obstructed.
Background technique
Currently, the backwash valve applied in the Flushing tubular column of petroleum industry oil-water well is by the positive sealing of ball sealer realization and instead
To well-flushing, structure is simple.But for shaking out, the exceptional wells such as polymer flooding oil-extraction, due to shaking out, fouling and sludge return spit etc. it is existing
As serious, impurity deposition, easy sand buries ball sealer in backwash valve, causes backwash channel blockage, cannot achieve normal well-flushing.It gives
The constructions such as the volume increase of oil-water well later period, pressure break, water filling are all brought a great deal of trouble, or even cause other techniques that can not implement.For
This problem needs to develop a kind of anti-flushing well sand-settling device to solve the above problems.
Summary of the invention
The purpose of this utility model is to provide a kind of anti-flushing well sand-settling devices, can be in the annular space inside sand-settling device
It realizes sand setting, allows in washing well process the dirt, the impurity that generate to be sunk to below Flushing tubular column from sand setting channel, avoid well-flushing obstructed
The generation of phenomenon improves construction efficiency, reduces production cost.
In order to achieve the above object, the utility model adopts the technical scheme that a kind of anti-flushing well sand-settling device includes upper
Connector, lower contact and ball sealer, the outside of this sand-settling device be sequentially connected from top to bottom top connection, outer cylinder, flow-dividing main body and under connect
Head, the inside of this sand-settling device are sequentially connected the blind chamber cavity in center of back of the body cap, flow tube, seal and flow-dividing main body from top to bottom
And blind plugging, blind plugging are connect with seal by shear pin；Spring and ball sealer, the tube body of flow tube are housed between back of the body cap and blind plugging
It is equipped with through hole, the ontology outside the blind chamber in flow-dividing main body center is equipped with sand setting channel, radial flowing hole and flow-dividing main body
The blind chamber connection in center；The ring formed between seal, flow tube and back of the body cap and the outer cylinder connected above the blind chamber in flow-dividing main body center
Shape space is connected to sand setting channel.
Compared to the prior art, the utility model has the following beneficial effects:
Sand setting channel and radial flowing hole are equipped in flow-dividing main body in the utility model, sand setting channel may be implemented to sink
Sand prevents impurity from burying well-flushing caused by ball sealer obstructed.The blind chamber in the center of flow-dividing main body is connect with blind plugging, is being come from above
In Flushing tubular column in the case where certain hydraulic pressure, shear pin is cut, and ball sealer pushes blind plugging to move downward, so that flow-dividing main body
The top of the blind chamber in center is unobstructed, and lower part is obstructed, can constant pressure turn on anti-flushing well channel, backwash liquor can by radial flowing hole and
Through hole returns out ground.Not only it solves the problems, such as sand setting, but also can be realized the construction purpose of anti-flushing well.
The utility model is connected to the bottom of Flushing tubular column, provides the anti-flushing well channel of oil jacket connection for Flushing tubular column,
It can be realized constant pressure turn on, ensure that ball sealer and seal in the sealing of underground.When be used for sand production petroleum reservoir, stop well-flushing or
It when water filling, reservoir sand or returns and spits dirt and can fall into tail pipe by the sand setting channel of this sand-settling device, can be avoided ball sealer and buried
Etc. well-flushing caused by reasons it is obstructed.Effectively shorten the construction period, avoid well-flushing it is obstructed caused by various drawbacks, be effectively reduced
Production cost has significant using effect and application value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
When considered in conjunction with the accompanying drawings, by referring to following detailed description, the present invention can be more completely and better understood with
And be easy to learn many adjoint advantages, but described herein, attached drawing is for providing to of the invention further
Understand, following illustrative embodiments and their description are used to explain the present invention, do not constitute improper limitations of the present invention.
As shown in Figure 1, a kind of anti-flushing well sand-settling device includes top connection 1, lower contact 7 and ball sealer 9, the outside of this sand-settling device
It is sequentially connected top connection 1, outer cylinder 2, flow-dividing main body 6 and lower contact 7 from top to bottom, the inside of this sand-settling device successively connects from top to bottom
The blind chamber cavity in center and blind plugging 8, blind plugging 8 for connecing back of the body cap 11, flow tube 3, seal 4 and flow-dividing main body 6 pass through with seal 4
Shear pin 5 connects；Spring 10 and ball sealer 9 are housed between back of the body cap 11 and blind plugging 8, the tube body of flow tube 3 is equipped with through hole 13,
Ontology outside the blind chamber in 6 center of flow-dividing main body is equipped with sand setting channel, and the blind chamber in center of radial flowing hole 12 and flow-dividing main body 6 connects
It is logical；The annular formed between seal 4, flow tube 3 and back of the body cap 11 and the outer cylinder 2 connected above the blind chamber in 6 center of flow-dividing main body is empty
Between be connected to sand setting channel.
The sand setting channel is the axial pass trough or axially extending bore being arranged in the blind chamber outer body in 6 center of flow-dividing main body,
The sand setting channel is staggered with radial flowing hole 12, make sand setting channel be neither connected to the blind chamber in the center of flow-dividing main body 6 nor
It is connected to radial flowing hole 12.
It is described radial direction flowing hole 12 be located in the evagination step of flow-dividing main body 6, the two sides outer circle of the evagination step respectively with
Outer cylinder 2 and lower contact 7 connect, the distance between radial 12 maximum diameter of hole bottom of flowing hole to the blind bottom of chamber portion in 6 center of flow-dividing main body
Greater than the height of blind plugging 8.Keep backwash liquor successfully empty from the annular of radial flowing hole 12, through hole 13, flow tube 3 and outer cylinder 2
Between in pass through,Ground is returned out, and the silt particle, impurity in backwash liquor then pass through sand setting channel and sink to the tail pipe connecting with lower contact 7
In, it prevents from burying ball sealer 9.
The top of the back of the body cap 11 is taper top, can preferably shunt and suppress liquid from Flushing tubular column.
The top inner circle of the seal 4 is that ball seat and ball sealer 9 cooperate.
Through hole 13 in the flow tube 3 is located above the ball seat of seal 4, enable the sealing of 9 level pressure of ball sealer and
It is blocked between the blind chamber in center of through hole 13 and flow-dividing main body 6.
Between the back of the body cap 11 and flow tube 3, between the flow tube 3 and seal 4, the seal 4 and shunt lead
Sealing ring is provided between body 6, between the seal 6 and blind plugging 8.
The lower part of the lower contact 7 is connect with tail pipe, and the tail pipe connecting with lower contact 7 is blind pipe, when proposition Flushing tubular column
When, the dirt in tail pipe is also proposed into ground together, cleans downhole environment.
When going into the well, the utility model is connected to the bottom of Flushing tubular column.It after going into the well, is suppressed out of Flushing tubular column, works as pressure
When power reaches the shear strength of shear pin 5, shear pin 5 is cut.Under the effect of the pressure, blind plugging 8 moves downward, and falls in flow-dividing main body
The blind bottom of chamber portion in 6 center.
When anti-flushing well, the liquid in pit shaft enters the center of flow-dividing main body 6 by the radial flowing hole 12 on flow-dividing main body 6
Blind chamber top, and push ball sealer 9 to move up, compressed spring 10.In inclined shaft in use, since ball sealer 9 is by spring 10
Effect, to guarantee between ball sealer 9 and seal 4 in sealing state.It is in sand output well in use, sand grains in oil pipe, miscellaneous
Matter and dirt are deposited downwards by the annular space between outer cylinder 2 and back of the body cap 11, flow tube 3 and seal 4, then by dividing
The sand setting channel of stream main body 6 is fallen into the tail pipe of Flushing tubular column bottom, and sand is avoided to bury ball sealer 9.
The above is only the preferred embodiment of the present invention, non-to limit the protection scope of the utility model,
Equivalence changes brought by his design with the utility model, should all belong to the protection scope of the utility model.
Claims (8)
1. a kind of anti-flushing well sand-settling device, including top connection, lower contact and ball sealer, characterized in that the outside of this sand-settling device is from upper
Be sequentially connected top connection, outer cylinder, flow-dividing main body and lower contact under and, the inside of this sand-settling device be sequentially connected from top to bottom back of the body cap,
The blind chamber cavity in the center of flow tube, seal and flow-dividing main body and blind plugging, blind plugging are connect with seal by shear pin；In back of the body cap
Spring and ball sealer are housed between blind plugging, the tube body of flow tube is equipped with through hole, the sheet outside the blind chamber in flow-dividing main body center
Body is equipped with sand setting channel, and radial flowing hole is connected to the blind chamber in the center of flow-dividing main body；Connection above the blind chamber in flow-dividing main body center
Seal, the annular space that is formed between flow tube and back of the body cap and outer cylinder is connected to sand setting channel.
2. a kind of anti-flushing well sand-settling device as described in claim 1, characterized in that the sand setting channel is arranged in flow-dividing main body
Axial pass trough or axially extending bore in the blind chamber outer body in center, the sand setting channel are staggered with radial flowing hole, make sand setting
Channel is neither connected to the blind chamber in the center of flow-dividing main body nor is connected to radial flowing hole.
3. a kind of anti-flushing well sand-settling device as claimed in claim 1 or 2, characterized in that the radial direction flowing hole is located at shunting master
In the evagination step of body, the two sides outer circle of the evagination step is connect with outer cylinder and lower contact respectively, radial flowing hole maximum diameter of hole
Bottom is greater than the height of blind plugging to the distance between the blind bottom of chamber portion in flow-dividing main body center.
4. a kind of anti-flushing well sand-settling device as claimed in claim 2, characterized in that be taper top at the top of the back of the body cap.
5. a kind of anti-flushing well sand-settling device as claimed in claim 4, characterized in that the top inner circle of the seal be ball seat with
Ball sealer cooperation.
6. a kind of anti-flushing well sand-settling device as claimed in claim 5, characterized in that the through hole in the flow tube is located at sealing
Above the ball seat of body.
7. a kind of anti-flushing well sand-settling device as claimed in claim 6, characterized in that between the back of the body cap and flow tube, the mistake
Sealing ring is provided between flow tube and seal, between the seal and flow-dividing main body, between the seal and blind plugging.
8. a kind of anti-flushing well sand-settling device as described in claim 1, characterized in that the lower part of the lower contact is connect with tail pipe,
The tail pipe connecting with lower contact is blind pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821131463.1U CN208777954U (en) | 2018-07-17 | 2018-07-17 | A kind of anti-flushing well sand-settling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821131463.1U CN208777954U (en) | 2018-07-17 | 2018-07-17 | A kind of anti-flushing well sand-settling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208777954U true CN208777954U (en) | 2019-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821131463.1U Active CN208777954U (en) | 2018-07-17 | 2018-07-17 | A kind of anti-flushing well sand-settling device |
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| CN (1) | CN208777954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837583A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Well-flushing tool and water injection string |
-
2018
- 2018-07-17 CN CN201821131463.1U patent/CN208777954U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837583A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Well-flushing tool and water injection string |
| CN114837583B (en) * | 2021-02-01 | 2024-04-30 | 中国石油天然气股份有限公司 | Well-flushing tool and water injection pipe column |
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