CN207934858U - Packer (CN) - Google Patents
Packer (CN) Download PDFInfo
- Publication number
- CN207934858U CN207934858U CN201820170605.9U CN201820170605U CN207934858U CN 207934858 U CN207934858 U CN 207934858U CN 201820170605 U CN201820170605 U CN 201820170605U CN 207934858 U CN207934858 U CN 207934858U
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- Prior art keywords
- wall
- packing element
- central tube
- housing
- section
- Prior art date
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- 238000012856 packing Methods 0.000 claims description 97
- 241001633942 Dais Species 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 12
- 238000007789 sealing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The application provides a packer, includes: a center tube axially penetrating therethrough; the outer wall of the central tube is provided with a limiting part and a stopping part at intervals along the axial direction; the side wall of the central tube is also provided with a backstop part and an opening communicated with the inside of the central tube; the rubber cylinder is sleeved on the outer wall of the central tube, and the upper end of the rubber cylinder is abutted to the limiting part; a first groove used for reducing the thickness of the side wall of the rubber cylinder is formed in the inner wall of the rubber cylinder; the outer sleeve is slidably sleeved on the outer wall of the central tube, and the upper end of the outer sleeve is abutted against the lower end of the rubber tube; the outer sleeve is provided with a matching part which can be fixed with the stopping part when the outer sleeve moves towards the direction close to the rubber cylinder; the stopping part is a stopping sleeve sleeved at the lower end of the central tube, the lower end of the outer sleeve penetrates through the upper end of the stopping sleeve, a limiting ring table extending towards the outer wall of the central tube is arranged on the inner wall of the stopping part, and a pressurizing cavity is formed between the lower end face of the outer sleeve and the limiting ring table. The embodiment of the application provides a packer that can easily set.
Description
Technical field
This application involves a kind of mixing arrangement in oil-gas mining field more particularly to a kind of packers.
Background technology
Packer can be used for sealing sleeve pipe, to carry out seperated layer water injection or layered gas-injection.
Packer accessory in the prior art is generally packing element.When setting, axial force is applied to the end of packing element, so that packing element
It is radially expanded under the action of the axial force, to be in contact with the inner wall of casing, with sealing sleeve pipe.But due to the prior art
In packing element sidewall thickness is unanimous between the higher and lower levels and the deformation behaviour of packing element itself, only apply sufficiently large axial force to packing element
Can just packing element be made to be radially expanded, so it is larger to set required active force.The difficulty of packer setting is so increased, and
Reduce the working efficiency of packer setting.
Utility model content
In view of this, the application embodiment provides a kind of packer for being readily susceptible to set.
To achieve the above object, this application provides the following technical solutions：A kind of packer, including：Central tube, axis
To perforation；It is axially spaced on the outer wall of the central tube to be provided with limiting section and stopper section；On the side wall of the central tube also
The trepanning for being provided with stop portion and being connected with the inside of the central tube；Packing element is sheathed on the outer wall of the central tube,
The upper end of the packing element offsets with the limiting section；It is provided on the inner wall of the packing element for reducing the packing element sidewall thickness
The first groove；Housing is slideably sheathed on the outer wall of the central tube, the upper end of the housing and the packing element
Lower end offsets, and is formed between the lower end of the housing and the stopper section and suppresses chamber with what the trepanning was connected；It is described outer
Put on and be provided with auxiliary section, the auxiliary section can the housing towards close to the packing element direction move when with the retaining
Portion is mutually fixed.
As a preferred embodiment, the stopper section is the backstop set for being sheathed on the central tube lower end, it is described
The lower end of housing is arranged in the upper end of the backstop set, is provided on the inner wall of the stopper section towards the outer of the central tube
The limited ring dais that wall extends, and between the lower face of the housing and the limited ring dais chamber is suppressed described in formation.
As a preferred embodiment, the lower face of the housing is recessed backwards to the limited ring dais, to form second recessed
Slot, second groove are connected with the trepanning.
As a preferred embodiment, the limited ring dais is threadedly connected on the outer wall of the central tube.
As a preferred embodiment, the housing includes the undergauge section being arranged in the backstop set and is located at institute
The extension diameter section for the side that undergauge section is covered back to the backstop is stated, the undergauge section and the outer wall of the central tube fit, described
Annular space, and the lower end of the upper end of the extension diameter section and the packing element are formed between extension diameter section and the outer wall of the central tube
It offsets, the upper end that the lower end of the extension diameter section is covered with the backstop offsets.
As a preferred embodiment, the outer wall upper edge of the central tube below the packing element is circumferentially disposed oriented
The flange of outer extension, the inner wall of the extension diameter section can be slided relative to the outer wall of the flange, so that the auxiliary section can be with
The stop portion is mutually fixed.
As a preferred embodiment, the stop portion is the first sawtooth, the auxiliary section is can be with described first
The second sawtooth that sawtooth is meshed.
As a preferred embodiment, outwardly extending limit protrusion is provided on the outer wall of the packing element, it is described
The lower side pressure of limiting section is set on the lower end of the packing element, and the lower face of the upper surface of the limit protrusion and the limiting section
It offsets.
As a preferred embodiment, pressure cap is arranged on the outer wall of the central tube, the upper side pressure of the pressure cap
On the lower end of the packing element, the lower end of the pressure cap and the upper end of the housing offset.
As a preferred embodiment, outwardly extending limit protrusion is provided on the outer wall of the packing element, it is described
Third groove is set on the upper end inner wall of pressure cap, and the third groove has towards the open opening of the packing element, the packing element
Lower end stretched into the third groove by the opening, and the lower face of the limit protrusion and the third groove is upper
End face offsets.
As a preferred embodiment, the upper end of the housing is connected by shear pin with the outer wall of the central tube
It connects.
As a preferred embodiment, the inner wall of the groove is cambered surface.
By above technical solution, the packer described in the application embodiment on the inner wall of packing element by being provided with
Groove for reducing packing element sidewall thickness so that when the axial force of packing element applied to it by housing, the bottom of the groove
Wall is radially expanded first, to drive the side wall of the packing element of groove vicinity to be radially expanded, so reduce set it is required
Setting force.In this way, the application embodiment provides a kind of packer for being readily susceptible to set.
Description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed in the present application in any way
It encloses.In addition, the shape and proportional sizes etc. of each component in figure are only schematical, it is used to help the understanding to the application, and
It is not the specific shape and proportional sizes for limiting each component of the application.Those skilled in the art, can under teachings of the present application
Implement the application to select various possible shapes and proportional sizes as the case may be.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the packer of the application embodiment.
Specific implementation mode
Below in conjunction with the attached drawing in the application embodiment, the technical solution in the application embodiment is carried out clear
Chu is fully described by, it is clear that described embodiment is only a part of embodiment of the application, rather than whole realities
Apply mode.Based on the embodiment in the application, those of ordinary skill in the art institute without creative efforts
The every other embodiment obtained, shall fall in the protection scope of this application.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.
Referring to Fig. 1, a kind of packer that present embodiment is provided comprising：Central tube 11, axially through；Institute
It states and axially spaced on the outer wall of central tube 11 is provided with limiting section 13 and stopper section 15；It is also set on the side wall of the central tube 11
It is equipped with stop portion 25 and the trepanning being connected with the inside of the central tube 11 23；Packing element 19 is sheathed on the central tube 11
Outer wall on, the upper end of the packing element 19 offsets with the limiting section 13；It is provided on the inner wall of the packing element 19 for reducing
First groove 21 of 19 sidewall thickness of the packing element；Housing 17 is slideably sheathed on the outer wall of the central tube 11, institute
The upper end and the lower end of the packing element 19 for stating housing 17 offset, and are formed between the lower end of the housing 17 and the stopper section 15
Chamber is suppressed with what the trepanning 23 was connected；Auxiliary section is provided on the housing 17, the auxiliary section can be in the housing 17
It is fixed with 25 phase of the stop portion when towards close to the movement of the direction of the packing element 19.
In use, the upper end of central tube 11 is connected with external tubing string first.Then again by external tubing string to center
High-pressure fluid is inputted in pipe 11.Intracavitary is suppressed to which high-pressure fluid can be entered by trepanning 23.To which housing 17 is suppressing intracavitary
Fluid pressure under, moved up relative to central tube 11, i.e., towards close to the movement of the direction of packing element 19, to squeeze packing element
19 so that packing element 19 is radially expanded, can be in contact with the inner wall of casing, with sealing sleeve pipe.Since auxiliary section can be outside
It is fixed with 25 phase of stop portion when set 17 is towards close to the movement of the direction of packing element 19, to when auxiliary section is fixed with 25 phase of stop portion
Packing element 19 can be made to be maintained at the state of sealing sleeve pipe.Due on the inner wall of the packing element 19 of the packer described in the application embodiment
It is provided with the first groove 21 for reducing 19 sidewall thickness of packing element, so the bottom wall of the first groove 21 is relative to surrounding glue
The side wall of cylinder 19 axial force required when being radially expanded wants small, so working as the axial direction that packing element 19 applies it by housing 17
When power, the bottom wall of first groove 21 is radially expanded first, to drive the side wall of the packing element 19 around the first groove 21
Be radially expanded, so compared with the existing technology in consistency of thickness up and down packing element 19 for can reduce and set required set
Power.
By the packer described in the application embodiment it can be seen from above scheme by being arranged on the inner wall of packing element 19
It is useful for reducing the first groove 21 of 19 sidewall thickness of packing element so that when the axial force for applying it by housing 17 of packing element 19
When, the bottom wall of first groove 21 is radially expanded first, to drive the side wall diameter of the packing element 19 around the first groove 21
To expansion, so reduces and set required setting force.
As shown in Figure 1, in the present embodiment, central tube 11 axially through.So as to by by central tube 11 and outside
Portion's tubing string is connected.Then high-pressure fluid is inputted into central tube 11 by external tubing string again.The upper end of central tube 11 is connected with
Top connection 43, so as to be connected with external tubing string by top connection 43.Limit is provided in the external wall of upper portion of central tube 11
Portion 13 is provided with stopper section 15 on the lower part outer wall of central tube 11.The limiting section 13 is for limiting packing element 19.Central tube
Stop portion 25 and the trepanning being connected with the inside of central tube 11 23 are additionally provided on 11 side wall.The internal diameter of the central tube 11 is
82mm can make other separate injection tubing string tripping in.
In the present embodiment, housing 17 is slideably sheathed on the outer wall of central tube 11, the lower end of housing 17 with only
It is formed between stopper 15 and suppresses chamber with what trepanning 23 was connected；Auxiliary section is provided on housing 17, auxiliary section can be in housing 17
It is fixed with 25 phase of stop portion when towards close to the movement of the direction of packing element 19.
In one embodiment, stopper section 15 is the backstop set for being sheathed on 11 lower end of central tube, and the lower end of housing 17 is worn
In the upper end of backstop set, the limited ring dais 27 of the outer wall extension towards central tube 11 is provided on the inner wall of stopper section 15,
And it is formed between the lower face and limited ring dais 27 of housing 17 and suppresses chamber.To suppress chamber when high-pressure fluid is entered by trepanning 23
Afterwards, housing 17 moves under the pressure for the fluid for suppressing intracavitary away from limited ring dais 27, to squeeze packing element 19, so that
Packing element 19 can be radially expanded.Further, the outer spiral shell for being connected with external tubing string is provided on the lower end outer wall of backstop set
Line.Backstop is covered is provided with sealing ring between housing 17, so as to enhance the leakproofness between backstop set and housing 17.
Further, limited ring dais 27 is threadedly connected on the outer wall of central tube 11.Specifically, the inner wall of limited ring dais 27
On be provided with internal thread, be provided on the outer wall of central tube 11 and the matched outer spiral shell of internal thread on 27 inner wall of limited ring dais
Line.
Preferably, the lower face of housing 17 backwards to limited ring dais 27 be recessed formed the second groove 29, the second groove 29 with open
Hole 23 is connected.To when high-pressure fluid can be entered by trepanning 23 second groove 29 it is interior after, fluid in the second groove 29
Pressure acts on housing 17, to push housing 17 to be moved away from limited ring dais 27.Second groove 29, which can increase, acts on housing
17 with the contact area of high-pressure fluid, to increase active force of the high-pressure fluid to housing 17, so that housing 17 deviates from spacing ring
Platform 27 moves.
In one embodiment, housing 17 includes the undergauge section being arranged in backstop set and is located at undergauge section back to backstop
The extension diameter section of the side of set, undergauge section and the outer wall of central tube 11 fit, and are formed between extension diameter section and the outer wall of central tube 11
There is annular space, and the upper end of extension diameter section and the lower end of packing element 19 offset, the upper end that the lower end of extension diameter section is covered with backstop offsets.By
Fit in undergauge section and the outer wall of central tube 11, thus avoid suppress the fluid of intracavitary from the undergauge section and central tube 11 it
Between flow out.Further, it is provided with sealing ring between the undergauge section and central tube 11, so as to enhance undergauge section and central tube 11
Between leakproofness.On the other hand, backstop set can be limited by extension diameter section, and extension diameter section can apply axial force to packing element 19,
So that packing element 19 can be radially expanded.
In a specific embodiment, the outer wall upper edge of the central tube 11 of 19 lower section of packing element is circumferentially provided with to extension
The inner wall of the flange 31 stretched, extension diameter section can be slided relative to the outer wall of flange 31, so that auxiliary section can be solid with 25 phase of stop portion
It is fixed.Preferably, stop portion 25 is the first sawtooth, and auxiliary section is the second sawtooth that can be meshed with the first sawtooth.To auxiliary section
It can be fixed towards when being moved close to the direction of packing element 19 with 25 phase of stop portion in housing 17.
Preferably, the upper end of housing 17 is connected by shear pin 33 with the outer wall of central tube 11.The shear pin 33 is for external
Set 17 is fixed, and to prevent the packer described in the application embodiment, axial shifting occurs for housing 17 during tripping in well
It is dynamic, and packing element 19 is squeezed, so that packing element 19 is set.When housing 17 is under the action of suppressing the fluid of intracavitary, shear pin 33 can be cut,
To be moved axially relative to central tube 11, to compress packing element 19.
In the present embodiment, packing element 19 is sheathed on the outer wall of central tube 11, upper end and 13 phase of limiting section of packing element 19
It supports；The lower end of packing element 19 and the upper end of housing 17 offset, and are provided on the inner wall of packing element 19 for reducing 19 sidewall thickness of packing element
The first groove 21.Since the first groove 21 can reduce 19 sidewall thickness of packing element, thus the bottom wall of the first groove 21 relative to
The side wall of surrounding packing element 19 axial force required when being radially expanded wants small, so working as packing element 19 by housing 17 to it
When the axial force of application, the bottom wall of the groove is radially expanded first, to drive groove vicinity packing element 19 side wall diameter
To expansion, so compared with the existing technology in consistency of thickness up and down packing element 19 for can reduce and set required setting force.
Namely first groove 21 can promote packing element 19 outward swell, be radially expanded to be conducive to packing element 19.Further, this
One groove 21 is set to the center of packing element 19.Preferably, the inner wall of groove is cambered surface.
In the present embodiment, which is single packing element 19, thus for multiple packing elements 19,19 institute of single packing element
The setting force needed is smaller, and when setting and the contact area of casing is smaller, and friction is small between such packing element 19 and casing,
So when deblocking, as long as above carrying central tube 11, can both so that opposite sliding occurs between packing element 19 and casing, to complete to solve
Envelope.
Preferably, outwardly extending limit protrusion 35 is provided on the outer wall of packing element 19, the lower side pressure of limiting section 13 is set to
On the lower end of packing element 19, and the upper surface of limit protrusion 35 and the lower face of limiting section 13 offset.It is covered on the outer wall of central tube 11
Equipped with pressure cap 41, the upper side pressure of pressure cap 41 is set on the lower end of packing element 19, and the lower end and the upper end of housing 17 of pressure cap 41 offset.Such as
This, is avoided that when the two-way pressure imbalance in the oil jacket annular space that packing element 19 is subject to, and packing element 19 rolls to the small side of pressure,
To influence to seal.Specifically, outwardly extending limit protrusion 35, the upper end inner wall of pressure cap 41 are provided on the outer wall of packing element 19
Upper setting third groove, third groove have towards 19 open opening of packing element, and third is stretched into the lower end of packing element 19 by opening
In groove, and the lower face of limit protrusion 35 and the upper surface of third groove offset.
It should be noted that in the description of the present application, term " first ", " second " etc. are used for description purposes only and distinguish
Between the two and sequencing is not present in similar object, can not be interpreted as indicating or implying relative importance.In addition,
In the description of the present application, unless otherwise indicated, the meaning of " plurality " is two or more.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined with reference to foregoing description, but should with reference to preceding claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as applicant the theme is not thought of as it is disclosed
Apply for a part for theme.
Claims (12)
1. a kind of packer, which is characterized in that including：
Central tube, axially through；It is axially spaced on the outer wall of the central tube to be provided with limiting section and stopper section；In described
The trepanning for being additionally provided with stop portion on the side wall of heart pipe and being connected with the inside of the central tube；
Packing element is sheathed on the outer wall of the central tube, and the upper end of the packing element offsets with the limiting section；The packing element
The first groove for reducing the packing element sidewall thickness is provided on inner wall；
Housing is slideably sheathed on the outer wall of the central tube, the lower end phase of the upper end of the housing and the packing element
It supports, is formed between the lower end of the housing and the stopper section and suppresses chamber with what the trepanning was connected；Outer put on sets
It is equipped with auxiliary section, the auxiliary section can be mutually solid with the stop portion when the housing is towards close to the movement of the direction of the packing element
It is fixed.
2. packer according to claim 1, it is characterised in that：The stopper section is to be sheathed on the central tube lower end
The lower end of backstop set, the housing is arranged in the upper end of the backstop set, is provided on the inner wall of the stopper section towards institute
The limited ring dais that the outer wall of central tube extends is stated, and is suppressed described in formation between the lower face of the housing and the limited ring dais
Chamber.
3. packer according to claim 2, it is characterised in that：The lower face of the housing is recessed backwards to the limited ring dais
It falls into and forms the second groove, second groove is connected with the trepanning.
4. packer according to claim 2, it is characterised in that：The limited ring dais is threadedly connected to the central tube
On outer wall.
5. packer according to claim 2, it is characterised in that：The housing includes the contracting being arranged in the backstop set
Diameter section and extension diameter section positioned at the side that the undergauge section is covered back to the backstop, the outer wall of the undergauge section and the central tube
It fits, annular space, and the upper end of the extension diameter section and institute is formed between the extension diameter section and the outer wall of the central tube
The lower end for stating packing element offsets, and the upper end that the lower end of the extension diameter section is covered with the backstop offsets.
6. packer according to claim 5, it is characterised in that：The outer wall upper edge of the central tube below the packing element
It is circumferentially provided with and outward extends flange, the inner wall of the extension diameter section can be slided relative to the outer wall of the flange, so that institute
Stating auxiliary section can mutually fix with the stop portion.
7. packer according to claim 1, it is characterised in that：The stop portion is the first sawtooth, and the auxiliary section is
The second sawtooth that can be meshed with first sawtooth.
8. packer according to claim 1, it is characterised in that：Outwardly extending limit is provided on the outer wall of the packing element
The lower side pressure of position protrusion, the limiting section is set on the lower end of the packing element, and the upper surface of the limit protrusion and the limit
The lower face in position portion offsets.
9. packer according to claim 1, it is characterised in that：Pressure cap is arranged on the outer wall of the central tube, it is described
The upper side pressure of pressure cap is set on the lower end of the packing element, and the lower end of the pressure cap and the upper end of the housing offset.
10. packer according to claim 9, it is characterised in that：It is provided on the outer wall of the packing element outwardly extending
Limit protrusion, third groove is arranged on the upper end inner wall of the pressure cap, and the third groove has open towards the packing element
The lower end of opening, the packing element is stretched by the opening in the third groove, and the lower face of the limit protrusion and institute
The upper surface for stating third groove offsets.
11. packer according to claim 1, it is characterised in that：The upper end of the housing passes through shear pin and the center
The outer wall of pipe is connected.
12. packer according to claim 1, it is characterised in that：The inner wall of the groove is cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820170605.9U CN207934858U (en) | 2018-01-31 | 2018-01-31 | Packer (CN) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820170605.9U CN207934858U (en) | 2018-01-31 | 2018-01-31 | Packer (CN) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207934858U true CN207934858U (en) | 2018-10-02 |
Family
ID=63650816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820170605.9U Active CN207934858U (en) | 2018-01-31 | 2018-01-31 | Packer (CN) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207934858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370317A (en) * | 2022-09-21 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | High-temperature high-pressure packer |
-
2018
- 2018-01-31 CN CN201820170605.9U patent/CN207934858U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370317A (en) * | 2022-09-21 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | High-temperature high-pressure packer |
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