CN105909206A - Closed compressed rubber sleeve sealing unit - Google Patents
Closed compressed rubber sleeve sealing unit Download PDFInfo
- Publication number
- CN105909206A CN105909206A CN201610466397.2A CN201610466397A CN105909206A CN 105909206 A CN105909206 A CN 105909206A CN 201610466397 A CN201610466397 A CN 201610466397A CN 105909206 A CN105909206 A CN 105909206A
- Authority
- CN
- China
- Prior art keywords
- packing element
- sealing unit
- enclosed
- compression
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 238000012856 packing Methods 0.000 claims description 153
- 230000006835 compression Effects 0.000 claims description 45
- 238000007906 compression Methods 0.000 claims description 45
- 241000283986 Lepus Species 0.000 claims description 14
- 230000000977 initiatory effect Effects 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 210000000664 rectum Anatomy 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gasket Seals (AREA)
Abstract
The invention provides a closed compressed rubber sleeve sealing unit. The closed compressed rubber sleeve sealing unit is mounted in a sleeve component and comprises two support rings, two protection rings, two end surface rubber sleeves and a central rubber sleeve, wherein the two end surface rubber sleeves are symmetrically arranged on the two opposite end parts of the central rubber sleeve, and the protection rings and the support rings are sequentially covered at the ends, far away from the central rubber sleeve, of the end surface rubber sleeves. The support rings and the protection rings adopt special size and structure designs, while the rubber sleeve is compressed and expands, a closed sealing groove is formed at the combined two ends of one end surface rubber sleeve, the central rubber sleeve and the other end surface rubber sleeve after the support rings and the protection rings are deformed, an annular gap between the sleeve and a drift diameter gauge is closed, the rubber sleeve is prevented from extruding into the annular gap between the sleeve and the drift diameter gauge at the high temperature or high pressure to cause damages, and the sealing capability and the sealing reliability of a packer are improved.
Description
Technical field
The present invention relates to a kind of petroleum gas down-hole instrument, especially enclosed compression packing element and seal single
Unit.
Background technology
The open type compression packing element sealing unit used on casing packer at present, packing element is upper and lower is logical
Footpath is advised, and in order to make packer enter well smoothly, has bigger between upper and lower jack rabbit and internal surface of sleeve pipe
Gap, after packing element compression-expansion, upper and lower jack rabbit and set will be clamp-oned in flange position, packing element two ends
Gap bigger between inside pipe wall, causes packing element to damage, and bottom hole temperature (BHT) is the highest, the upper and lower pressure reduction of packing element
The biggest, this damaged condition will be the most serious, until causing packer to lose envelope.
Summary of the invention
The present invention is a kind of enclosed compression packing element sealing unit.
Technical scheme is as follows:
A kind of enclosed compression packing element sealing unit, is installed in thimble assembly, including support ring, guarantor
Retaining ring, end face packing element and center packing element, described support ring, protection ring, end face packing element quantity equal
Being two, said two end face packing element is symmetrically set in two opposed ends of described center packing element, described
Protection ring and described support ring are covered in described end face packing element successively away from the one of described center packing element
End.
Preferably, described center packing element be internally formed arc groove.
Preferably, the opposing end surface of described end face packing element and described center packing element is cooperate oblique
Face.
Preferably, described thimble assembly includes packing element mandrel and sleeve pipe, and described enclosed compression packing element is close
Envelope cell rings is located in described packing element mandrel and sleeve pipe, at the beginning of described enclosed compression packing element sealing unit tool
Beginning structure or pressure texture.
Preferably, described enclosed compression packing element sealing unit also include being located on described packing element mandrel with
Sleeve pipe is interior and is respectively arranged on the described support ring two jack rabbits away from packing element one end, described center.
Preferably, annular gap is formed between described jack rabbit and described sleeve pipe.
Preferably, the compression of described the enclosed described support ring of initiating structure of packing element sealing unit, guarantor
Retaining ring, end face packing element and center packing element are all spaced with described sleeve pipe.
Preferably, the described protection ring of pressure texture of described enclosed compression packing element sealing unit and institute
State support ring and enclose the formation described end face packing element of collecting and described center with described packing element mandrel and sleeve pipe
The enclosed seal groove of packing element.
Preferably, described enclosed compression packing element sealing unit pressure texture described end face packing element and
Described center packing element abuts with the inwall of described sleeve pipe.
Preferably, V-shaped annular gap is formed between described jack rabbit and described support ring.
The beneficial effects of the present invention is:
1, support ring and protection ring are because have employed distinctive size and structure design, swollen in packing element compression
While swollen, after support ring and protection ring deformation, at end face packing element, center packing element, end face packing element
Packing element combination two ends, define an enclosed seal groove, enclose jack rabbit and sleeve pipe it
Between annular gap, packing element can be avoided to clamp-on between jack rabbit and sleeve pipe under high temperature and High Pressure Difference
Annular gap and occur damage, improve sealability and the sealing reliability of packer.
2, end face packing element acts primarily as supporting role in sealing unit, and center packing element is in sealing unit
Act primarily as sealing function, so end face packing element is higher than cartridge hardness in hardness proportioning；End face
Coordinate inclined-plane between packing element with center packing element, not only increase the compression lifting surface area of packing element, and
And create the component towards packing element mandrel, make the sealing between center packing element and packing element mandrel
Relatively reliable.
3, end face packing element and center packing element reasonably hardness proportioning and the fit structure on inclined-plane, can
Empty to ensure the annular that end face packing element and center packing element can reliably seal between packing element mandrel and sleeve pipe
Between.
4, arc groove can make central glue cylinder just can produce bigger expansion under less compression stress
Deformation, can effectively reduce the setting force of packer；And arc groove can effectively increase center packing element
With the contact stress of internal surface of sleeve pipe, improve sealability and the sealing reliability of packing element.
Accompanying drawing explanation
Fig. 1 is that enclosed of the present invention compression packing element sealing unit first uses the part-structure of state to illustrate
Figure；
Fig. 2 is that enclosed of the present invention compression packing element sealing unit second uses the part-structure of state to illustrate
Figure.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Please refer to Fig. 1 and Fig. 2, a kind of enclosed compression packing element sealing unit, it is installed on sleeve pipe group
In part, including support ring 1, protection ring 2, end face packing element 3 and center packing element 4, described support ring
1, protection ring 2, the quantity of end face packing element 3 are two, and said two end face packing element 3 symmetry sets
In two opposed ends of described center packing element 4, described protection ring 2 and described support ring 1 are covered successively
It is placed on described end face packing element 3 one end away from described center packing element 4.
Described center packing element 4 be internally formed arc groove 5.
It is bigger that described arc groove 5 can make central glue cylinder 4 just can produce under less compression stress
Dilatancy, can effectively reduce the setting force of packer；And arc groove 5 can effectively increase
Center packing element 4 and the contact stress of sleeve pipe 9 inwall, the sealability and the sealing that improve packing element can
By property.
The opposing end surface of described end face packing element 3 and described center packing element 4 is the inclined-plane 6 cooperated；
Described end face packing element 3 and both center packing elements 4 reasonably hardness proportioning and the fit structure on inclined-plane 6,
Can ensure that end face packing element 3 and center packing element 4 can reliably seal between packing element mandrel 8 and sleeve pipe 9
Annular space.
Described end face packing element 3 acts primarily as supporting role in sealing unit, and described center packing element 4 exists
Sealing unit acts primarily as sealing function, so end face packing element is harder than cartridge in hardness proportioning
Degree height；Coordinate inclined-plane 6 between described end face packing element 3 and center packing element 4, not only increase glue
Cylinder compression lifting surface area, and create one towards the component of packing element mandrel 8, make central glue
Sealing between cylinder 4 and packing element mandrel 8 is relatively reliable.
Described thimble assembly includes packing element mandrel 8 and sleeve pipe 9, and described enclosed compression packing element seals single
Unit is located in described packing element mandrel 8 and sleeve pipe 9, at the beginning of described enclosed compression packing element sealing unit tool
Beginning structure or pressure texture.
Described enclosed compression packing element sealing unit also includes being located on described packing element mandrel 8 and sleeve pipe 9
In and be respectively arranged on the described support ring 1 two jack rabbits 7 away from packing element 4 one end, described center.
Annular gap 10 is formed between described jack rabbit 7 and described sleeve pipe 9.
Described enclosed compression the described support ring 1 of initiating structure of packing element sealing unit, protection ring 2,
End face packing element 3 and center packing element 4 are all spaced with described sleeve pipe 9.
The described protection ring 2 of the pressure texture of described enclosed compression packing element sealing unit and described support
Ring 1 and described packing element mandrel 8 and sleeve pipe 9 enclose formation house described end face packing element 3 and described in
The enclosed seal groove 11 of heart packing element 4.
Described enclosed compression packing element sealing unit pressure texture described end face packing element 3 and described in
Heart packing element 4 abuts with the inwall of described sleeve pipe 9.
V-shaped annular gap, described V word is formed between described jack rabbit 7 and described support ring 1
Shape annular gap becomes pressure texture for described enclosed compression packing element sealing unit from initiating structure to be provided
Support the space of deformation.
Described support ring 1 and described protection ring 2 design because have employed distinctive size and structure,
While packing element compression-expansion, support ring 1 and protection ring 2 deformation after, end face packing element 3, in
Heart packing element 4, the packing element combination two ends of end face packing element 3, define an enclosed seal groove 11,
Enclose the annular gap 10 between jack rabbit 7 and sleeve pipe 9, packing element can be avoided at high temperature and high pressure
Clamp-on the annular gap 10 between jack rabbit 7 and sleeve pipe 9 under difference and occur damaging, improve packing
The sealability of device and sealing reliability.
When described enclosed compression packing element sealing unit sets, the axial setting force of applying passes through latus rectum
Rule 7 compression end face packing element 3 and center packing element 4 so that it is inside and outside footpath expands and increases, cartridge
Annular space between mandrel 8 and sleeve pipe 9；Meanwhile, axial setting force extruding support ring 1
And protection ring 2 so that it is cylindrical deformation increases also sticks internal surface of sleeve pipe, formed one enclosed close
Sealing groove 11, the seal groove 11 of this enclosed can effectively prevent the end face packing element 3 at two ends from clamp-oning logical
Annular gap 10 between footpath rule 7 and sleeve pipe 9, causes packing element to damage, affects the sealing of packer
Ability and sealing reliability.
Above-described is only embodiments of the present invention, it should be noted here that for this area
For those of ordinary skill, without departing from the concept of the premise of the invention, it is also possible to make and changing
Enter, but these belong to protection scope of the present invention.
Claims (10)
1. an enclosed compression packing element sealing unit, is installed in thimble assembly, it is characterised in that
Including support ring (1), protection ring (2), end face packing element (3) and center packing element (4), described
Pushing out ring (1), protection ring (2), the quantity of end face packing element (3) are two, said two end face
Packing element (3) is symmetrically set in two opposed ends at described center packing element (4), described protection ring (2)
Described end face packing element (3) it is covered in successively away from described center packing element (4) with described support ring (1)
One end.
Enclosed the most according to claim 1 compression packing element sealing unit, it is characterised in that: institute
That states center packing element (4) has been internally formed arc groove (5).
Enclosed the most according to claim 1 compression packing element sealing unit, it is characterised in that: institute
The opposing end surface stating end face packing element (3) and described center packing element (4) is the inclined-plane (6) cooperated.
Enclosed the most according to claim 1 compression packing element sealing unit, it is characterised in that: institute
State thimble assembly and include packing element mandrel (8) and sleeve pipe (9), described enclosed compression packing element sealing unit
It is located on described packing element mandrel (8) interior with sleeve pipe (9), described enclosed compression packing element sealing unit
Tool initiating structure or pressure texture.
Enclosed the most according to claim 4 compression packing element sealing unit, it is characterised in that: institute
State enclosed compression packing element sealing unit also to include being located on described packing element mandrel (8) and sleeve pipe (9)
In and be respectively arranged on the described support ring (1) two latus rectums away from packing element (4) one end, described center
Rule (7).
Enclosed the most according to claim 5 compression packing element sealing unit, it is characterised in that: institute
State and between jack rabbit (7) and described sleeve pipe (9), form annular gap (10).
Enclosed the most according to claim 4 compression packing element sealing unit, it is characterised in that: institute
State enclosed compression the described support ring (1) of initiating structure of packing element sealing unit, protection ring (2),
End face packing element (3) and center packing element (4) are all spaced with described sleeve pipe (9).
Enclosed the most according to claim 4 compression packing element sealing unit, it is characterised in that: institute
State described protection ring (2) and the described support ring (1) of the pressure texture of enclosed compression packing element sealing unit
Enclose formation with described packing element mandrel (8) and sleeve pipe (9) and house described end face packing element (3) and institute
State the enclosed seal groove (11) of center packing element (4).
Enclosed the most according to claim 4 compression packing element sealing unit, it is characterised in that: institute
State the described end face packing element (3) of the pressure texture of enclosed compression packing element sealing unit and described central glue
Cylinder (4) abuts with the inwall of described sleeve pipe (9).
Enclosed the most according to claim 5 compression packing element sealing unit, it is characterised in that:
The described jack rabbit (7) of the initiating structure of described enclosed compression packing element sealing unit and described support ring
(1) V-shaped annular gap is formed between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466397.2A CN105909206A (en) | 2016-06-23 | 2016-06-23 | Closed compressed rubber sleeve sealing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610466397.2A CN105909206A (en) | 2016-06-23 | 2016-06-23 | Closed compressed rubber sleeve sealing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105909206A true CN105909206A (en) | 2016-08-31 |
Family
ID=56759391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610466397.2A Pending CN105909206A (en) | 2016-06-23 | 2016-06-23 | Closed compressed rubber sleeve sealing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105909206A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714735A (en) * | 2019-10-30 | 2020-01-21 | 南通市华业石油机械有限公司 | Rubber cylinder structure of packer and preparation method thereof |
| CN112681999A (en) * | 2021-03-10 | 2021-04-20 | 东营市海天自动化工程有限责任公司 | Compression packer |
| CN114542006A (en) * | 2020-11-26 | 2022-05-27 | 中国石油天然气集团有限公司 | Sealed cartridge assembly and packer of gluing |
Citations (9)
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|---|---|---|---|---|
| CN201269074Y (en) * | 2008-10-23 | 2009-07-08 | 大庆油田有限责任公司 | Minor-diameter drillable packer |
| CN202731830U (en) * | 2012-06-01 | 2013-02-13 | 中国石油天然气股份有限公司 | Retrievable and drillable packer for oil well |
| CN203175469U (en) * | 2013-01-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Hydraulic packer |
| CN203308428U (en) * | 2013-05-30 | 2013-11-27 | 上海优强石油科技有限公司 | Open hole well segmented pressure fracture packer |
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| CN203978373U (en) * | 2014-06-28 | 2014-12-03 | 新疆华油油气工程有限公司 | Hydraulic setting presses down deblocking packer |
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| CN205805497U (en) * | 2016-06-23 | 2016-12-14 | 宝鸡市元亨石油设备有限责任公司 | Enclosed compression packing element sealing unit |
-
2016
- 2016-06-23 CN CN201610466397.2A patent/CN105909206A/en active Pending
Patent Citations (9)
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| CN201269074Y (en) * | 2008-10-23 | 2009-07-08 | 大庆油田有限责任公司 | Minor-diameter drillable packer |
| CN202731830U (en) * | 2012-06-01 | 2013-02-13 | 中国石油天然气股份有限公司 | Retrievable and drillable packer for oil well |
| CN203175469U (en) * | 2013-01-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Hydraulic packer |
| CN203308428U (en) * | 2013-05-30 | 2013-11-27 | 上海优强石油科技有限公司 | Open hole well segmented pressure fracture packer |
| RU2532501C1 (en) * | 2013-08-07 | 2014-11-10 | Олег Сергеевич Николаев | Multifunctional packer |
| CN203559859U (en) * | 2013-09-22 | 2014-04-23 | 中国石油集团川庆钻探工程有限公司 | Packer structure |
| CN203978373U (en) * | 2014-06-28 | 2014-12-03 | 新疆华油油气工程有限公司 | Hydraulic setting presses down deblocking packer |
| CN105178907A (en) * | 2015-09-01 | 2015-12-23 | 上海大学 | Compression packer sealing structure |
| CN205805497U (en) * | 2016-06-23 | 2016-12-14 | 宝鸡市元亨石油设备有限责任公司 | Enclosed compression packing element sealing unit |
Non-Patent Citations (1)
| Title |
|---|
| 杜晓瑞等主编: "《钻井工具手册 2012版》", 31 January 2013, 中国石化出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714735A (en) * | 2019-10-30 | 2020-01-21 | 南通市华业石油机械有限公司 | Rubber cylinder structure of packer and preparation method thereof |
| CN114542006A (en) * | 2020-11-26 | 2022-05-27 | 中国石油天然气集团有限公司 | Sealed cartridge assembly and packer of gluing |
| CN112681999A (en) * | 2021-03-10 | 2021-04-20 | 东营市海天自动化工程有限责任公司 | Compression packer |
| CN112681999B (en) * | 2021-03-10 | 2021-06-15 | 大庆丹枫石油技术开发有限公司 | Compression packer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160831 |