CN206360679U - Multichannel end is all-round to resilient support isolating seal device - Google Patents
Multichannel end is all-round to resilient support isolating seal device Download PDFInfo
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- CN206360679U CN206360679U CN201621362397.XU CN201621362397U CN206360679U CN 206360679 U CN206360679 U CN 206360679U CN 201621362397 U CN201621362397 U CN 201621362397U CN 206360679 U CN206360679 U CN 206360679U
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- packing element
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Abstract
The utility model relates to a kind of packer used in oil field development, is concretely that multichannel end is all-round to resilient support isolating seal device, mainly for needing the oil-water well of test technology.Present apparatus central tube two ends each connect top connection and lower contact; expanding packing element is enclosed on outside central tube; expanding packing element two ends are each clothed with sheath and are threadedly coupled; sheath also socket-connects with top connection and lower contact; set the annular space that hole is linked up between central tube and expanding packing element; in the one or both ends socket protection spring of expanding packing element, protection spring is located at the following position or the above position positioned at lower cover of top sheath.Due in packing element end socket protection spring; in packer setting; spring is also together expanded with packing element; spring steel wire just plugs the annular space between packer steel body and sleeve pipe; packing element its end when bearing big pressure difference is not wriggled and is failed into annular space, thus improve the sealability of the utility model device.
Description
Technical field
The utility model is related to a kind of packer used in oil field development, is concretely that multichannel end is all-round to bullet
Property support isolating seal device, mainly for needing the oil-water well of test technology.
Background technology
Oil field development enters the middle and later periods, and set damages serious, and the casing inner diameter after subsidy is repaired often has serious undergauge problem.
For demixing injection-production, it is necessary to which a kind of packer, it can pass through at sleeve shrinking diameter and be lowered into underground, be sat at normal casing inner diameter
Envelope.Big expansion ratio inflatable packer is have studied for this, the research of this kind of packer mainly solves inflatable packer
The material and processing problems of packing element, because expansion ratio is larger, the ability of its seal pressure differential is significantly not enough.
Further, there is the problem of oil content is gradually reduced successively in the horizontal well of large-scale application in recent years, such to solve
Problem, the analysis that conducts a research understands that its production profile is just particularly important.But in R ＆ D Level well production profile test technology
, it is necessary to which such a packer, it can both cross cable therefrom and sealed, also simultaneously again by 3.5in oil pipes during method
Want variable-flow-path and meet the sealing of envelope 7in casing inner diameters, it is existing not comply with special process through inquiring about existing various packer
Functional requirement.
The content of the invention
To solve the above problems, having invented, multichannel end is all-round to resilient support isolating seal device, and the device is also
A kind of packer, it realizes the High Pressure Difference sealing under big expansion ratio packer setting state, and meets measuring technology to big swollen
It is swollen to compare, the process requirements of cable packer be worn, realize the bridge-type connection above and below packer inner and outer seals.
The present invention is adopted the following technical scheme that：
Multichannel end is all-round to resilient support isolating seal device, and central tube two ends are each via threaded connection top connection
And lower contact, expanding packing element is enclosed on outside central tube, and expanding packing element two ends are each clothed with sheath and are threadedly coupled, sheath also with
Top connection and lower contact socket-connect, and the annular space that hole is linked up between central tube and expanding packing element are set, the one of expanding packing element
End or two ends socket protection spring, protection spring are located at the following position or the above position positioned at lower cover of top sheath.
Preferred embodiment one：The described circular step of central tube peripheral hardware one, between the circular step and lower contact in
Socket back-moving spring and baffle ring in the annular space that central tube and sheath are formed, sheath and baffle ring are mutually fixed with fastening nail.
Preferred embodiment two：Cable seal mechanism is provided with described top connection, cable seal mechanism above position in
Top connection is provided with the annular space radially set between hole communication top connection inner chamber and central tube and expanding packing element；In in top connection
Axially bridge joint hole is additionally provided with to link up outside top connection and center tube cavity.Described cable seal mechanism is：Described top connection
Provided with upper endoporus step, sealing ring is placed in described upper endoporus step, has upper pressing cap to be pressed on sealing ring and and top connection
Threaded connection；Or, described top connection is provided with lower endoporus step, and sealing ring is placed in described lower endoporus step, pushed
Cap is pressed under sealing ring and is threadedly coupled with top connection.
Compared with prior art, the beneficial effects of the present invention are：Due in the socket of the one or both ends of expanding packing element
Spring is protected, in packer setting, spring is also together expanded with packing element, and spring steel wire just plugs packer steel body and sleeve pipe
Between annular space, packing element its end when bearing big pressure difference is not wriggled and is failed into annular space, thus improve
The sealability of apparatus of the present invention.The setting of back-moving spring, gives packing element one downward pulling force, carries in removing seal for packer simultaneously
The high solution sealing property of packing element.Further, the setting of cable seal mechanism, makes apparatus of the present invention be provided with cable and extends there through and close
Seal the ability of cable.The setting in bridge joint hole has been linked up in the more than packing element outside central tube with below cable seal mechanism
Chamber.
Brief description of the drawings
The present invention is above simply described, one is entered with reference next to the drawing of the specific examples below of the description present invention
Step, in detail the narration present invention.These drawings only describe some typical embodiments of the invention, therefore are not construed as limit
The scope of the present invention processed.In these drawings：
Fig. 1 is the all-round structural representation to resilient support isolating seal device in multichannel end of the present invention, in figure
The two ends socket protection spring of expanding packing element.
The all-round structure to resilient support isolating seal device preferred embodiment one in multichannel end that Fig. 2 is the present invention is shown
It is intended to.
The all-round structure to resilient support isolating seal device preferred embodiment two in multichannel end that Fig. 3 is the present invention is shown
It is intended to, the cable seal mechanism in figure is placed in endoporus step.
The all-round structure to resilient support isolating seal device preferred embodiment two in multichannel end that Fig. 4 is the present invention is shown
It is intended to, the cable seal mechanism in figure is placed in lower endoporus step.
Fig. 5 is A-A profiles in Fig. 3 and Fig. 4.
Fig. 6 is B-B profiles shown in Fig. 5.
Fig. 7 is the all-round structural representation to resilient support isolating seal device in multichannel end of the present invention, in figure
One end socket protection spring of expanding packing element.
Embodiment
In this specification, mode page top margin as illustrated is called upper, under foot margin is.
As shown in Fig. 1 and Fig. 7, multichannel end is all-round to resilient support isolating seal device, and the two ends of central tube 2 each lead to
Threaded connection top connection 1 and lower contact 6 are crossed, expanding packing element 5 is enclosed on outside central tube 2, the two ends of expanding packing element 5 are each clothed with shield
Set 3 is simultaneously threadedly coupled, and sheath 3 also socket-connects with top connection 1 and lower contact 6, is set hole 7 and is linked up central tube 2 and expanding packing element 5
Between annular space, expanding packing element 5 one or both ends socket protection spring 4, protection spring 4 be located at top sheath 3 with
Lower position or the above position positioned at lower cover 3.
Sealed position is needed to be equipped with sealing ring, such as Fig. 1 between lower contact 6 and sheath 3 in the structure of the present invention
Sealing ring 8 shown in figure, others sealing part is repeated no more as shown in FIG..
The present invention multichannel end it is all-round to resilient support isolating seal device be also a kind of inflatable packer.
The purpose for setting hole 7 is the annular space between the interior centre bore of communicating device and central tube 2 and expanding packing element 5, is made
The liquid set can bulging expanding packing element 5, therefore set hole 7 and can be located on central tube 2, other parts can also be located at
On, such as it is arranged in top connection 1.
During expanding 5 bulging of packing element, protection spring 4 can be made to expand together, protect the spring silk of spring 4 just to plug this hair
Annular space between the steel body and sleeve pipe of bright device, expanding packing element 5 would not produce shoulder when sealing High Pressure Difference from annular space
And seal failure.Therefore, if device of the invention only seals uniaxial pressure, it is possible to protection only is installed in one end of packing element
Spring 4；If during sealing two-way alternating pressure, protection spring 4 can be installed at the two ends of packing element.
Described protection spring 4 is cylindrically coiled spring, and its spring silk section can be circular, ellipse or rectangle.
For ease of the retraction of expanding packing element 5, it is solved sealing property more preferably, give packing element one downward auxiliary pulling force, help
Help it to bounce back.As shown in Fig. 2 the described circular step 21 of 2 peripheral hardware of central tube one, the circular step 21 and lower contact 6 it
Between in being socketed back-moving spring 23 and baffle ring 25 in the annular space that central tube 2 and sheath 3 are formed, sheath 3 and baffle ring 25 are followed closely with fastening
24 mutually fix.
As shown in figure 3, close provided with cable in the cable passed through from apparatus of the present invention, described top connection 1 in order to seal
Sealing mechanism, sets hole 7 provided with radial direction in cable seal mechanism above position and links up the inner chamber of top connection 1 and central tube 2 and expanding
Annular space between packing element 5.
Described cable seal mechanism is：Described top connection 1 is provided with upper endoporus step, and sealing ring 32 is placed in described upper
In endoporus step, there is upper pressing cap 31 to be pressed on sealing ring 32 and be threadedly coupled with top connection 1.
As shown in Figure 4, described cable seal mechanism can also be：Described top connection 1 is provided with lower endoporus step, sealing
Circle 32 is placed in described lower endoporus step, has lower pressing cap 41 to be pressed under sealing ring 32 and be threadedly coupled with top connection 1.
In order to link up above and below inside and outside packer, as shown in Figure 5 and Figure 6, hole 33 is axially bridged in being additionally provided with top connection 1
To link up top connection outside and center tube cavity.This set can meet the requirement of test technology, and down-hole liquid can be from envelope
Bridge joint hole 33 is flowed through inside device and outside more than packing element is reached.
Embodiment as described herein is only exemplary embodiments, but is not limited only to these embodiments, those skilled in the art
Member can make modification under without departing from the spirit of the present invention and enlightenment.Aspect disclosed herein there may be many changes,
Combination and modification, and be within, therefore, protection domain is not limited only to explanation above, but according to right
It is required that to define, protection domain includes all equivalents of the target of claim.
Claims (6)
1. multichannel end is all-round to resilient support isolating seal device, central tube（2）Two ends in threaded connection each via connecing
Head（1）And lower contact（6）, expanding packing element（5）It is enclosed on central tube（2）Outside, expanding packing element（5）Two ends are each clothed with sheath
（3）And be threadedly coupled, sheath（3）Also with top connection（1）And lower contact（6）Socket-connect, set hole（7）Link up central tube（2）With
Expanding packing element（5）Between annular space, it is characterised in that in expanding packing element（5）One or both ends socket protection spring
（4）, protect spring（4）Positioned at top sheath（3）Following position or positioned at lower cover（3）Above position.
2. multichannel end according to claim 1 is all-round to resilient support isolating seal device, it is characterised in that described
Protection spring（4）It is cylindrically coiled spring, its spring silk section is circular, ellipse or rectangle.
3. multichannel end according to claim 1 is all-round to resilient support isolating seal device, it is characterised in that described
Central tube（2）The circular step of peripheral hardware one（21）, in the circular step（21）And lower contact（6）Between in central tube（2）With
Sheath（3）Socket back-moving spring in the annular space formed（23）And baffle ring（25）, sheath（3）And baffle ring（25）With fastening nail（24）
It is mutually fixed.
4. the multichannel end according to claim 1 or 3 is all-round to resilient support isolating seal device, it is characterised in that
Described top connection（1）It is interior to be provided with cable seal mechanism, in cable seal mechanism above position in top connection（1）Provided with radially
Set hole（7）Link up top connection（1）Inner chamber and central tube（2）With expanding packing element（5）Between annular space；In top connection（1）On
It is additionally provided with axially bridge joint hole（33）Link up top connection（1）Outside and central tube（2）Inner chamber.
5. multichannel end according to claim 4 is all-round to resilient support isolating seal device, it is characterised in that described
Cable seal mechanism be：Described top connection（1）Provided with upper endoporus step, sealing ring（32）It is placed in described upper endoporus step
It is interior, there is upper pressing cap（31）It is pressed in sealing ring（32）On and and top connection（1）Threaded connection.
6. multichannel end according to claim 4 is all-round to resilient support isolating seal device, it is characterised in that described
Cable seal mechanism be：Described top connection（1）Provided with lower endoporus step, sealing ring（32）It is placed in described lower endoporus step
It is interior, there is lower pressing cap（41）It is pressed in sealing ring（32）Under and and top connection（1）Threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621362397.XU CN206360679U (en) | 2016-12-13 | 2016-12-13 | Multichannel end is all-round to resilient support isolating seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621362397.XU CN206360679U (en) | 2016-12-13 | 2016-12-13 | Multichannel end is all-round to resilient support isolating seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206360679U true CN206360679U (en) | 2017-07-28 |
Family
ID=59374699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621362397.XU Active CN206360679U (en) | 2016-12-13 | 2016-12-13 | Multichannel end is all-round to resilient support isolating seal device |
Country Status (1)
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|---|---|
| CN (1) | CN206360679U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761537A (en) * | 2016-12-13 | 2017-05-31 | 中国石油化工股份有限公司 | Multichannel end is all-round to resilient support isolating seal device |
| CN111075387A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Expanding type water injection packer with shoulder protection sleeve on upper portion of rubber sleeve |
| CN113863889A (en) * | 2021-09-27 | 2021-12-31 | 李香珍 | A general pilot production instrument for oil reservoir shutoff |
-
2016
- 2016-12-13 CN CN201621362397.XU patent/CN206360679U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761537A (en) * | 2016-12-13 | 2017-05-31 | 中国石油化工股份有限公司 | Multichannel end is all-round to resilient support isolating seal device |
| CN111075387A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Expanding type water injection packer with shoulder protection sleeve on upper portion of rubber sleeve |
| CN113863889A (en) * | 2021-09-27 | 2021-12-31 | 李香珍 | A general pilot production instrument for oil reservoir shutoff |
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