CN206280052U - Underground barrier valve - Google Patents
Underground barrier valve Download PDFInfo
- Publication number
- CN206280052U CN206280052U CN201621335370.1U CN201621335370U CN206280052U CN 206280052 U CN206280052 U CN 206280052U CN 201621335370 U CN201621335370 U CN 201621335370U CN 206280052 U CN206280052 U CN 206280052U
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- China
- Prior art keywords
- guide shell
- box cupling
- valve
- slide
- ball seat
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Abstract
The utility model is related to wellfracturing technical field, is a kind of underground barrier valve；Including upper box cupling, guide shell, slide-valve, ball seat and lower box cupling, the lower outside of upper box cupling and the upper end inner side of guide shell are fixedly installed togather, slide-valve is installed with the inside of guide shell, slide-valve lower inside is installed with ball seat by the second shear pin, guide shell and lower box cupling are fixedly installed togather, and at least two pod apertures are circumferentially provided with the guide shell below ball seat.The utility model reasonable and compact in structure, it is easy to use, the utility model balances leather cup two-way pressure, reduce and aggravate to enter difficulty under tubing string is caused on top in eccentric wear and leather cup bottom annular fluid because upper and lower pressure difference causes the expansion of the skirt wing during leather cup enters under, and avoid leather cup bottom annular fluid from entering in pipe from tip-in device, spray to drilling floor surface.
Description
Technical field
The utility model is related to wellfracturing technical field, is a kind of underground barrier valve.
Background technology
In acid fracturing, after entering setting position under leather cup fracturing string, there is no the leather cup fracturing string of underground barrier valve,
Enter the eccentric wear that process easily causes leather cup under leather cup fracturing string, while under tubing string is caused on top in the annular fluid of leather cup bottom
Enter difficulty, there is very big potential safety hazard.
The content of the invention
The utility model provides a kind of underground barrier valve, overcomes the deficiency of above-mentioned prior art, and it can effectively be solved
Enter difficulty under the easy eccentric wear of the leather cup skirt wing, tubing string and there is a problem of potential safety hazard.
The technical solution of the utility model is realized by following measures：A kind of underground barrier valve, including upper box cupling,
Guide shell, slide-valve, ball seat and lower box cupling, the lower outside of upper box cupling and the upper end inner side of guide shell are fixedly installed togather,
Slide-valve is installed with the inside of guide shell, slide-valve lower inside is installed with ball seat, leads by the second shear pin
Flow cartridge and lower box cupling are fixedly installed togather, and at least two pod apertures are circumferentially provided with the guide shell below ball seat.
Here is the further optimization and/or improvements to foregoing invention technical scheme：
Above-mentioned upper box cupling and guide shell are threadably secured and are installed together, and guide shell and lower box cupling are threadably secured peace
It is fitted together.
First anti-turn screw is installed between above-mentioned upper box cupling and guide shell, second is provided between guide shell and lower box cupling
Anti-turn screw.
Be provided with sealing ring between above-mentioned upper box cupling and guide shell, be provided with sealing ring between slide-valve and guide shell, ball seat and
Sealing ring is provided between slide-valve, it is lower that sealing ring is provided between box cupling and guide shell
It is above-mentioned to be provided with annular groove in guide shell upper inner, locating ring, the upper end of slide-valve and positioning are set with annular groove
Ring is fixed together by the first shear pin.
The utility model reasonable and compact in structure, easy to use, the utility model balance leather cup two-way pressure, reduces leather cup
Aggravate top in eccentric wear and leather cup bottom annular fluid because upper and lower pressure difference causes the skirt wing to expand during entering under and cause pipe
Enter difficulty under post, and avoid leather cup bottom annular fluid from entering in pipe from tip-in device, spray to drilling floor surface.
Brief description of the drawings
Accompanying drawing 1 is the main view half section structural representation of the utility model most preferred embodiment.
Coding in accompanying drawing is respectively：1 is upper box cupling, and 2 is guide shell, and 3 is slide-valve, and 4 is ball seat, and 5 is lower box cupling, 6
It is the first shear pin, 7 is the second shear pin, and 8 is pod apertures, and 9 is the first holding screw, and 10 is the second holding screw, 11
It is sealing ring, 12 is locating ring.
Specific embodiment
The utility model is not limited by following embodiments, can according to the technical solution of the utility model and actual conditions come
Determine specific embodiment.
In the utility model, for the ease of description, the description of the relative position relation of each part is according to specification
The Butut mode of accompanying drawing is described, such as：The position relationship of upper and lower, left and right etc. is according to the Butut side of Figure of description
Always determine.
The utility model is further described with reference to embodiment and accompanying drawing：
As shown in Figure 1, the underground barrier valve includes upper box cupling 1, guide shell 2, slide-valve 3, ball seat 4 and lower box cupling 5, on
The lower outside of box cupling 1 and the upper end inner side of guide shell 2 are fixedly installed togather, and slip is installed with the inner side of guide shell 2
Valve 3, the lower inside of slide-valve 3 is installed with ball seat 4 by the second shear pin 7, and guide shell 2 and lower box cupling 5 are fixedly mounted
Together, at least two pod apertures 8 are circumferentially provided with the guide shell 2 below ball seat 4.When using, acid fracturing is being carried out
When, after entering setting position under leather cup fracturing string, pitching builds the pressure in pipe, ball seat 4 is lowered at pod apertures 8, and this practicality is new
Type is closed, and continues to build the pressure, and ball seat 4 is come off, and falls into tip-in device, and after the completion of construction, blowout prevention above carries recovery fracturing string, uses
Leather cup fracturing string after the utility model, reduces the eccentric wear to leather cup during entering under leather cup fracturing string, reduce it
Potential safety hazard.
Above-mentioned underground barrier valve can be made further optimization and/or improvements according to actual needs：
As shown in Figure 1, upper box cupling 1 and guide shell 2 are threadably secured and are installed together, and guide shell 2 and lower box cupling 5 are logical
Cross to be screwed and be installed together.So, convenience easy to disassemble.
As shown in Figure 1, in order to prevent from rotating, the first anti-turn screw 9, water conservancy diversion are installed between upper box cupling 1 and guide shell 2
Second anti-turn screw 10 is installed between cylinder 2 and lower box cupling 5.
As shown in Figure 1, in order to preferably realize sealing, sealing ring 11 is provided between upper box cupling 1 and guide shell 2, is slided
Sealing ring 11 is provided between valve 3 and guide shell 2, sealing ring 11, lower box cupling 5 and guide shell 2 are provided between ball seat 4 and slide-valve 3
Between be provided with sealing ring 11.
As shown in Figure 1, annular groove is provided with the upper inner of guide shell 2, locating ring 12, slide-valve 3 is set with annular groove
Upper end and locating ring 12 be fixed together by the first shear pin 6.So, in order to easy for installation.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and optimal implementation
Effect, can according to actual needs increase and decrease non-essential technical characteristic to meet the demand of different situations.
Claims (6)
1. a kind of underground barrier valve, it is characterised in that including upper box cupling, guide shell, slide-valve, ball seat and lower box cupling, upper box cupling
The upper end inner side of lower outside and guide shell is fixedly installed togather, and slide-valve, slide-valve are installed with the inside of guide shell
Lower inside is installed with ball seat by the second shear pin, and guide shell and lower box cupling are fixedly installed togather, under ball seat
At least two pod apertures are circumferentially provided with the guide shell of side.
2. underground barrier valve according to claim 1, it is characterised in that upper box cupling and guide shell are threadably secured installation
Together, guide shell and lower box cupling are threadably secured and are installed together.
3. underground barrier valve according to claim 2, it is characterised in that upper first is provided between box cupling and guide shell to prevent
Turn screw, the second anti-turn screw is installed between guide shell and lower box cupling.
4. the underground barrier valve according to claim 1 or 2 or 3, it is characterised in that upper to be provided with close between box cupling and guide shell
Seal, is provided with sealing ring between slide-valve and guide shell, be provided with sealing ring between ball seat and slide-valve, lower box cupling and guide shell it
Between be provided with sealing ring.
5. the underground barrier valve according to claim 1 or 2 or 3, it is characterised in that guide shell upper inner is provided with annular groove,
Locating ring is set with annular groove, the upper end of slide-valve and locating ring are fixed together by the first shear pin.
6. underground barrier valve according to claim 4, it is characterised in that guide shell upper inner is provided with annular groove, in annular groove
Locating ring is set with, the upper end of slide-valve and locating ring are fixed together by the first shear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621335370.1U CN206280052U (en) | 2016-12-07 | 2016-12-07 | Underground barrier valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621335370.1U CN206280052U (en) | 2016-12-07 | 2016-12-07 | Underground barrier valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206280052U true CN206280052U (en) | 2017-06-27 |
Family
ID=59074542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621335370.1U Active CN206280052U (en) | 2016-12-07 | 2016-12-07 | Underground barrier valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206280052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
-
2016
- 2016-12-07 CN CN201621335370.1U patent/CN206280052U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201110 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |