CN207229084U - A kind of switchable infinite stages fracturing sliding bush switching tools - Google Patents
A kind of switchable infinite stages fracturing sliding bush switching tools Download PDFInfo
- Publication number
- CN207229084U CN207229084U CN201721266490.5U CN201721266490U CN207229084U CN 207229084 U CN207229084 U CN 207229084U CN 201721266490 U CN201721266490 U CN 201721266490U CN 207229084 U CN207229084 U CN 207229084U
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- piston
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- hydraulic cylinder
- elastic dilatation
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Abstract
The utility model discloses a kind of switchable infinite stages fracturing sliding bush switching tools, top connection, hydraulic cylinder and elastic dilatation head are linked in sequence successively, and resetting spring and piston are equipped with hydraulic cylinder；Top connection connects plain tubing or coiled tubing, by pressure conduction to the piston after being suppressed in pipe, it is axially moved when piston is suppressed in pipe in hydraulic cylinder, piston is provided with swollen head, the resetting spring is between hydraulic cylinder and piston, and offer screen resilience makes piston reset after release in pipe；Elastic dilatation head is provided with three equally distributed expansion valves, and when being suppressed in pipe, the swollen head of the piston moves down the expansion valve for strutting the elastic dilatation head.The utility model for after pressure break or production latter portions fractured layer water outlet situation control effectively, extend the production time, improve yield.
Description
Technical field
It the utility model is related to horizontal well fracturing technical field, more particularly to a kind of switchable infinite stages fracturing sliding bush
Switching tools.
Background technology
Horizontal well bore hole staged fracturing technology is to improve low hole, hypotonic, low pressure untraditional reservoir production capacity main means.
At present, domestic and international common horizontal well fracturing technology has hydraulic jetting fracturing technology, packer pitching fracturing technique, bridge plug
Staged fracturing technology, annular space staged fracturing technology, compound staged fracturing technology of coiled tubing fracturing technique and kinds of processes etc..
But these technologies all have certain limitation：First, pressure break passage is always maintained at opening after the completion of fracturing work
State, but easily there is the situation of pit shaft premature water breakthrough in exploitation in horizontal well, and very detrimental effect is caused to production capacity.
2nd, the instrument such as bridge plug, sliding sleeve needs to carry out to bore mill after the completion of pressing crack construction and can be only achieved that big orifice is produced and the later stage surveys
The purpose of industry is studied, construction is complicated and adds operating risk.Although the 3rd, packer pitching fracturing technique construction is simple, operation
It is efficient, but since the differential of pitching size limits number of fragments；And although bridge plug staged fracturing etc. can carry out in theory
Infinite stages staged fracturing, but it is complicated to construct, and man-hour, long efficiency was low.
Utility model content
, can without boring mill the purpose of this utility model is to provide an a kind of switchable infinite stages fracturing sliding bush switching tools
Realize full-bore, infinite stages pressure break, and can be selective in post-fracturing production operation the serious well section of closing water breakthrough, improve water
Flat well yield.
The utility model uses following technical scheme to achieve the above object：
A kind of switchable infinite stages fracturing sliding bush switching tools, including top connection, piston, resetting spring, hydraulic cylinder, elasticity
Head is expanded, the top connection, hydraulic cylinder and elastic dilatation head are linked in sequence successively, and resetting spring and work are equipped with the hydraulic cylinder
Plug；The top connection connects plain tubing or coiled tubing, and pressure conduction to the piston, the piston exist after being suppressed in pipe
Be axially moved when being suppressed in pipe in hydraulic cylinder, the piston is provided with swollen head, the resetting spring be located at hydraulic cylinder with
Between piston, offer screen resilience makes piston reset after release in pipe；The elastic dilatation head be provided with three it is equally distributed
Valve is expanded, when being suppressed in pipe, the swollen head of the piston moves down the expansion valve for strutting the elastic dilatation head,
The overall diameter dimensions of the elastic dilatation head become larger；After release in pipe, under the action of the resetting spring, the piston
Set back, the elastic dilatation head recovers original outer diameter.
Compared with prior art, the utility model has the following advantages：The utility model is by realizing to switchable unlimited
Level fracturing sliding bush instrument selective switch, for after pressure break or production latter portions fractured layer water outlet situation effectively controlled
System, extends the production time, improves yield.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
In figure：1- top connections, 2- pistons, 3- resetting springs, 4- hydraulic cylinders, 5- elastic dilatation heads.
Embodiment
The utility model is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of switchable infinite stages fracturing sliding bush switching tools, including top connection 1, piston 2, resetting spring
3rd, hydraulic cylinder 4, elastic dilatation first 5, the top connection 1, hydraulic cylinder 4 and elastic dilatation first 5 are linked in sequence successively, the hydraulic cylinder
Resetting spring 3 and piston 2 are equipped with 4；The top connection 1 connects plain tubing or coiled tubing, passes pressure after being suppressed in pipe
The piston 2 is directed at, is axially moved when the piston 2 is suppressed in pipe in hydraulic cylinder 4,2 lower end of piston is provided with swollen
Head, the resetting spring 3 is between hydraulic cylinder 4 and piston 2, and offer screen resilience resets piston 2 after release in pipe；It is described
Elastic dilatation first 5 is provided with three equally distributed expansion valves, and when being suppressed in pipe, the swollen head of 2 lower end of piston is downward
The mobile expansion valve for strutting the elastic dilatation first 5, the overall diameter dimensions of the elastic dilatation first 5 become larger；When being unloaded in pipe
After pressure, under the action of the resetting spring 3, the piston 2 sets back, and the elastic dilatation first 5 recovers original outer diameter ruler
It is very little.
The occupation mode of the utility model：The utility model is lowered into switchable full-bore infinite stages fracturing sliding bush instrument
Resetting sliding sleeve becomes path position, and the oil pipe being connected with top connection 1 suppressed in pipe, and pressure promotes piston 2 downward in hydraulic cylinder 4
It is mobile.The swollen head of 2 lower end of piston is by the expansion valve distending of elastic dilatation first 5.Elastic dilatation first 5 after distending is embedded in switchable
The resetting sliding sleeve of full-bore infinite stages fracturing sliding bush instrument becomes path position, and switching tools above carry at this time, that is, drag switchable all-pass
The resetting sliding sleeve of footpath infinite stages fracturing sliding bush instrument moves up.After being moved to resetting sliding sleeve top dead center position, pressure release in oil pipe,
Piston 2 sets back under the rebound effect of resetting spring 3, elastic dilatation it is first 5 recover outer diameter and with switchable all-pass
The resetting sliding sleeve of footpath infinite stages fracturing sliding bush instrument departs from.
The above is the utility model preferred embodiment, for the ordinary skill in the art, according to this reality
With new teaching, in the case where not departing from the principle of the utility model with spirit, the change that is carried out to embodiment, repair
Change, replace and modification is still fallen within the scope of protection of the utility model.
Claims (1)
1. a kind of switchable infinite stages fracturing sliding bush switching tools, it is characterised in that including top connection, piston, resetting spring, liquid
Cylinder pressure, elastic dilatation head, the top connection, hydraulic cylinder and elastic dilatation head are linked in sequence successively, are equipped with the hydraulic cylinder multiple
Position spring and piston；Top connection connection plain tubing or coiled tubing, by pressure conduction to the piston after suppressing in pipe,
The piston is axially moved when being suppressed in pipe in hydraulic cylinder, and the piston is provided with swollen head, the resetting spring position
Between hydraulic cylinder and piston, offer screen resilience makes piston reset after release in pipe；The elastic dilatation head is provided with three
Equally distributed expansion valve, when being suppressed in pipe, the swollen head of the piston, which moves down, struts the elastic dilatation head
Expansion valve, the overall diameter dimensions of the elastic dilatation head become larger；After release in pipe, in the effect of the resetting spring
Under, the piston sets back, and the elastic dilatation head recovers original outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721266490.5U CN207229084U (en) | 2017-09-29 | 2017-09-29 | A kind of switchable infinite stages fracturing sliding bush switching tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721266490.5U CN207229084U (en) | 2017-09-29 | 2017-09-29 | A kind of switchable infinite stages fracturing sliding bush switching tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229084U true CN207229084U (en) | 2018-04-13 |
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ID=61849941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721266490.5U Active CN207229084U (en) | 2017-09-29 | 2017-09-29 | A kind of switchable infinite stages fracturing sliding bush switching tools |
Country Status (1)
| Country | Link |
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| CN (1) | CN207229084U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049605A (en) * | 2020-09-26 | 2020-12-08 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN112077205A (en) * | 2020-09-17 | 2020-12-15 | 中海油能源发展股份有限公司 | Mechanical punching tool and operation method |
| CN113898315A (en) * | 2021-12-08 | 2022-01-07 | 西安维克特睿油气技术有限公司 | Unlimited-level switchable full-bore sliding sleeve assembly |
| CN114427422A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Multi-section fracturing and intelligent well completion integrated pipe column and method |
-
2017
- 2017-09-29 CN CN201721266490.5U patent/CN207229084U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112077205A (en) * | 2020-09-17 | 2020-12-15 | 中海油能源发展股份有限公司 | Mechanical punching tool and operation method |
| CN112077205B (en) * | 2020-09-17 | 2022-06-03 | 中海油能源发展股份有限公司 | Mechanical punching tool and operation method |
| CN114427422A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Multi-section fracturing and intelligent well completion integrated pipe column and method |
| CN114427422B (en) * | 2020-09-25 | 2024-02-02 | 中国石油化工股份有限公司 | Multistage fracturing and intelligent well completion integrated tubular column and method |
| CN112049605A (en) * | 2020-09-26 | 2020-12-08 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN112049605B (en) * | 2020-09-26 | 2022-11-01 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN113898315A (en) * | 2021-12-08 | 2022-01-07 | 西安维克特睿油气技术有限公司 | Unlimited-level switchable full-bore sliding sleeve assembly |
| CN113898315B (en) * | 2021-12-08 | 2022-03-01 | 西安维克特睿油气技术有限公司 | Unlimited-level switchable full-bore sliding sleeve assembly |
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