CN207406310U - A kind of piston-conveying pressure formula amplificate packer - Google Patents
A kind of piston-conveying pressure formula amplificate packer Download PDFInfo
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- CN207406310U CN207406310U CN201721540440.1U CN201721540440U CN207406310U CN 207406310 U CN207406310 U CN 207406310U CN 201721540440 U CN201721540440 U CN 201721540440U CN 207406310 U CN207406310 U CN 207406310U
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- piston
- core pipe
- pressure
- packing element
- pressure chamber
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Abstract
It is more particularly to a kind of for laminated distributor under well, the piston-conveying pressure formula amplificate packer in sealing interlayer different pressures area the utility model is related to packer technology field.The packer includes core pipe and is arranged successively and top connection, expanding formula packing element, fluid cylinder set, piston and the lower contact in core pipe, the shoulder up and down of expanding formula packing element installs first gear bowl and second gear bowl respectively, the upper pressure chamber of sealing is formed between expanding formula packing element and core pipe, accommodating pressure-transmitting liquid is inoculated in upper pressure chamber, it is formed between core pipe, fluid cylinder set, lower contact and piston and keeps pressure consistent with lower pressure chamber by the radial direction pressure transmission hole in core pipe with lower pressure chamber, lower pressure chamber.Packing element two-way pressure difference at string creep, sealing is excessive when packing element ruptures caused by reasons, and the direct actual effect of grease tubing string will not be caused because of unicom inside and outside tubing string, and twin packer configuration usually can be used, improve the tubing string service life, reduce operating cost.
Description
Technical field
It is more particularly to a kind of for laminated distributor under well, the work in sealing interlayer different pressures area the utility model is related to packer
Fill in pressure transmitting type amplificate packer.
Background technology
Oil-water well generally squeezed with packer by way of hydraulic pressure or mechanical compression, expands packing element realization sets, and one
As packer central tube and external packing element it is direct-connected by pressure transmission hole, when tubing string internal pressure is high, glue can be made by pressure transmission hole
Cylinder expansion, completes the sealing between grease tubing string and casing；Pressure release in grease tubing string is generally configured with to unseal automatically and with self-locking
Function, by fluid pressure be closed in packing element and central, tubular into pressure chamber in, continue to keep sealing state, when anti-flushing well or
When put-on and delegated, rotation pipeline, self-locking piston is opened, pressure release unseals two kinds of functions.
Oil-water well packer of the prior art, it is fast to set speed, but also easily goes out during long-term underground work
Now oil jacket annular space directly connects caused by glue bucket breakage, and entire tubing string is caused to fail, and in view of this, inventor provides a kind of new
Type piston-conveying pressure amplificate packer, has solved problems of the prior art, makes the practicality stronger.
Utility model content
Failure is set in order to solve the problems, such as that oil-water well of the prior art is susceptible to packer, the utility model carries
A kind of piston-conveying pressure formula amplificate packer is supplied.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme：
A kind of piston-conveying pressure formula amplificate packer, be arranged including core pipe and successively in core pipe top connection, expanding formula glue
Cylinder, fluid cylinder set, piston and lower contact, wherein, the shoulder up and down of expanding formula packing element installs first gear bowl and second gear bowl respectively, expands
The upper pressure chamber of closing is formed between the formula that rises packing element and core pipe, accommodating pressure-transmitting liquid is inoculated in upper pressure chamber, core pipe, fluid cylinder are covered and lived
Plug forms lower pressure chamber between lower contact, lower pressure chamber by the radial direction pressure transmission hole being opened in core pipe make its with inside core pipe
Pressure is consistent, and the movement for passing through piston applies upper pressure chamber or discharge pressure, make expanding packing element realize expansion or
Retraction.
Preferably, the shoulder up and down of expanding formula packing element is threadedly coupled respectively with first gear bowl and second gear bowl.
The lower outer circumferential of the top connection of piston-conveying pressure formula amplificate packer provided by the utility model and first gear bowl
Top external peripheral threads are connected with connecting tube.Preferably, between top connection and upper connecting tube, first gear bowl and sliding sleeve it
Between, pacify between top connection and core pipe, between second gear bowl and fluid cylinder set, between core pipe and piston, between piston and fluid cylinder set
Sealing ring is filled, the upper pressure chamber of sealing is formed between core pipe and expanding packing element, and intracavitary is inoculated with accommodating pressure-transmitting liquid.
Piston-conveying pressure formula amplificate packer provided by the utility model, also between piston and lower contact, lower contact and core
Sealing ring is respectively mounted between pipe, lower pressure chamber makes it be consistent with core pipe internal pressure by the radial direction pressure transmission hole in core pipe,
And the movement for passing through piston applies upper pressure chamber or discharges pressure, forms expansion or the retraction of expanding packing element.
Piston-conveying pressure formula amplificate packer provided by the utility model when tubing string internal pressure is high, passes through radial through-hole
Pressure transmission, pressure promote piston, piston to packing element and central, tubular into pressure chamber between accommodating pressure-transmitting liquid pressurize, expand packing element,
It is sealed between grease tubing string and casing；It is provided simultaneously with pressure release in grease tubing string to unseal automatically and with auto-lock function, by liquid
Pressure seal in packing element and central, tubular into pressure chamber in, continue to keep sealing state, when anti-flushing well or upper body, decentralization, rotation
When turning oil pipe, self-locking piston is opened, pressure release unseals two kinds of functions.From above technical scheme, when packing element is because of string creep, close
Two-way pressure difference is excessive when reasons cause packing element to rupture at envelope, because of unicom inside and outside tubing string grease tubing string will not be caused directly real
Effect usually can be used twin packer configuration, improve the tubing string service life, reduces operating cost.
Description of the drawings
Fig. 1 is the sectional view of piston-conveying pressure formula amplificate packer provided by the utility model.
Specific embodiment
The utility model is intended to provide a kind of piston-conveying pressure formula amplificate packer, is sealed with solving oil-water well in the prior art
The problem of oil jacket annular space caused by glue bucket breakage being susceptible to every device directly to connect, entire tubing string is caused to fail.
In order to which those skilled in the art is enable to be better understood from the utility model, With reference to embodiment with it is attached
The utility model is described in further detail for figure.
A kind of piston-conveying pressure formula amplificate packer, including core pipe 1 and be arranged successively in core pipe 1 top connection 3, expanding formula
Packing element 2, fluid cylinder set 8, piston 6 and lower contact 7, the shoulder up and down of expanding formula packing element 2 are threadedly coupled first gear bowl 4 and second respectively
Bowl 5 is kept off, the upper pressure chamber 9 of closing is formed between expanding formula packing element 2 and core pipe 1, accommodating pressure-transmitting liquid, core pipe are inoculated in upper pressure chamber 9
1st, lower pressure chamber 10 is formed between fluid cylinder set 8 and piston 6, lower contact 7, lower pressure chamber 10 is passed by the radial direction being opened in core pipe
Pressure hole 11 makes it be consistent with core pipe internal pressure, and the movement for passing through piston 6 applies or discharge pressure to upper pressure chamber 9,
The expansion of expanding packing element 2 or retraction is made to realize and set.
In a kind of specific embodiment, the lower outer circumferential of the top connection 3 of piston-conveying pressure formula amplificate packer and
The top external peripheral threads connection upper joint sleeve 15 of one gear bowl 4.
In a preferred embodiment, between top connection 3 and upper connecting tube 15, first gear bowl 4 and upper connecting tube 15
Between according to sealing ring 12；Also sealing ring can be installed between first gear bowl 4, second gear bowl 5 and expanding formula packing element 2 simultaneously
13, according to sealing ring 14 between fluid cylinder set 8 and second gear bowl 5, piston 6 and lower contact 7.
A kind of piston-conveying pressure formula amplificate packer provided by the utility model is described in detail above.Herein
In apply specific case the principle and embodiment of the utility model be set forth, the explanation of above example is simply used
Understand the method and central idea of the utility model in help.It should be pointed out that come for the those skilled in the art of the art
Say, on the premise of the utility model principle is not departed from, can also to the utility model, some improvement and modification can also be carried out, these change
It is also fallen into modification in the protection domain of the utility model claims.
Claims (5)
1. a kind of piston-conveying pressure formula amplificate packer, it is characterised in that：Be arranged including core pipe and successively in core pipe top connection,
Expanding formula packing element, fluid cylinder set, piston and lower contact, wherein, the shoulder up and down of expanding formula packing element installs first gear bowl and respectively
Two gear bowls form the upper pressure chamber of closing, accommodating pressure-transmitting liquid, core pipe, liquid are inoculated in upper pressure chamber between expanding formula packing element and core pipe
Form lower pressure chamber between cylinder sleeve and piston, lower contact, lower pressure chamber by the radial direction pressure transmission hole being opened in core pipe make its with
Core pipe internal pressure is consistent, and upper pressure chamber is applied by the movement of piston or discharges pressure, realizes expanding packing element
Expansion or retraction.
2. piston-conveying pressure formula amplificate packer as described in claim 1, it is characterised in that：The shoulder portion up and down of expanding formula packing element
It is not threadedly coupled with first gear bowl and second gear bowl.
3. piston-conveying pressure formula amplificate packer as described in claim 1, it is characterised in that：The lower outer circumferential of top connection and
The top external peripheral threads of one gear bowl are connected with connecting tube.
4. piston-conveying pressure formula amplificate packer as claimed in claim 3, it is characterised in that：Between top connection and upper connecting tube,
Between first gear bowl and upper connecting tube, between top connection and core pipe, between second gear bowl and fluid cylinder set, between core pipe and piston,
Sealing ring is respectively mounted between piston and fluid cylinder set.
5. the piston-conveying pressure formula amplificate packer as described in claim 1 or 3, it is characterised in that：Between piston and lower contact, under
Sealing ring is respectively mounted between connector and core pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721540440.1U CN207406310U (en) | 2017-11-17 | 2017-11-17 | A kind of piston-conveying pressure formula amplificate packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721540440.1U CN207406310U (en) | 2017-11-17 | 2017-11-17 | A kind of piston-conveying pressure formula amplificate packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207406310U true CN207406310U (en) | 2018-05-25 |
Family
ID=62316626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721540440.1U Active CN207406310U (en) | 2017-11-17 | 2017-11-17 | A kind of piston-conveying pressure formula amplificate packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207406310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427372A (en) * | 2020-09-09 | 2022-05-03 | 中国石油化工股份有限公司 | Automatic annular sealing device |
-
2017
- 2017-11-17 CN CN201721540440.1U patent/CN207406310U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427372A (en) * | 2020-09-09 | 2022-05-03 | 中国石油化工股份有限公司 | Automatic annular sealing device |
| CN114427372B (en) * | 2020-09-09 | 2024-05-24 | 中国石油化工股份有限公司 | Automatic annular sealing device |
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