CN208330264U - casing deformation well packer - Google Patents
casing deformation well packer Download PDFInfo
- Publication number
- CN208330264U CN208330264U CN201820596310.8U CN201820596310U CN208330264U CN 208330264 U CN208330264 U CN 208330264U CN 201820596310 U CN201820596310 U CN 201820596310U CN 208330264 U CN208330264 U CN 208330264U
- Authority
- CN
- China
- Prior art keywords
- packing element
- central tube
- well packer
- casing deformation
- lug boss
- 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.)
- Active
Links
- 238000012856 packing Methods 0.000 claims description 101
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 19
- 239000011324 bead Substances 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 7
- 239000010425 asbestos Substances 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The application provides a set becomes well packer includes: a central tube; the side wall of the central tube is provided with a pressure guide hole for injecting steam; the rubber cylinder is movably sleeved on the outer wall of the central tube and covers the pressure guide hole; the rubber cylinder can expand outwards under the pressure in the pressure guide hole; the supporting part can abut against the outer wall of the rubber barrel when the rubber barrel expands outwards, so that the protruding part can abut against the upper end of the rubber barrel; the supporting part comprises a plurality of supporting pieces, one end of each supporting piece is rotatably connected with the boss, the other end of each supporting piece is connected with the rubber sleeve, and each supporting piece has the largest value relative to the rotating angle of the central pipe. The application embodiment provides a set becomes well packer that can be applicable to the set becomes well that takes place the undergauge.
Description
Technical field
This application involves cyclic steam injection tech field more particularly to a kind of casing deformation well packers.
Background technique
Packer can in steam injection for blocking the annular space between oil pipe and casing, block steam enter oil pipe with
Annular space between casing, avoids steam heat from losing, and realizes oil reservoir steam injection.
In the prior art, thermometal inflatable packer is generally used.The thermometal inflatable packer includes using
In the thermometal to deform.Behind packer G.I.H designated position, when injecting hot steam, since temperature raises, heat
Sensitized metal starts to act, and when temperature reaches 200 °, thermometal part is deformed in place, realizes sealing.
But the swelliong power of the thermometal is limited.For example, the internal diameter when casing is 161.7mm, due to by swelliong power
Influence, the outer diameter of metal packer cannot be less than 152mm.But in casing deformation well, casing, which deforms, to be caused in various degree
Undergauge.Such as when the internal diameter of casing is contracted to be less than 152mm from original 161.7mm, the temperature-sensitive that outer diameter is 152mm is golden
Belong to inflatable packer i.e. cannot be by sleeve shrinking diameter at.It is difficult again because the internal diameter after sleeve shrinking diameter can not specifically be learnt
To match suitable thermometal inflatable packer therewith.Such thermometal inflatable packer is not suitable for casing deformation well
In.
Utility model content
In view of this, the application embodiment provides a kind of casing deformation well packing of casing deformation well that can be suitably used for occurring undergauge
Device.
To achieve the above object, this application provides the following technical solutions: a kind of casing deformation well packer, comprising: center
Pipe；The pressure guide hole for steam injection is provided on the side wall of the central tube；Packing element is movably sheathed on the central tube
On outer wall and cover the pressure guide hole；The packing element can expand outward under the pressure in the pressure guide hole；Lug boss, it is described convex
The portion of rising is disposed around on the outer wall of the central tube, and the boss is in the top of the packing element, the outer side wall of the packing element
Equipped with support portion, the support portion extends towards the lug boss, and the support portion is connected with the lug boss, the support
Portion can the outer wall when the packing element expands outward with the packing element offset so that the lug boss can be with the upper end of the packing element
It offsets.
As a preferred embodiment, the support portion includes multiple supporting elements, one end of each supporting element
It is rotatably connected with the lug boss, the other end of each supporting element is connected with the packing element, and each support
Part has maximum value relative to the angle rotated with the central tube.
As a preferred embodiment, the maximum value is 85 °.
As a preferred embodiment, one end of each supporting element and the lug boss are pivotally connected.
As a preferred embodiment, multiple supporting elements are uniformly arranged along the outer rim of the lug boss.
As a preferred embodiment, the pressure guide hole is located at the central tube close to the one of the packing element upper end
Side, and the axis perpendicular of the center line of the pressure guide hole and the central tube.
As a preferred embodiment, the packing element in steam injection the upper end inner wall and its lower end inner wall with it is described
The outer wall of central tube seals cooperation.
As a preferred embodiment, enclosing on the outer wall of the central tube below the packing element equipped with limit convex
It rises, the retention bead can offset with the lower end of the packing element.
As a preferred embodiment, the outer diameter of the lug boss is 107mm, the outer diameter of the packing element is 96mm.
As a preferred embodiment, including asbestos in the packing element.
As a preferred embodiment, being embedded with steel wire in the packing element.
By above technical solution, casing deformation well packer described in the application embodiment can be by reducing packing element
Outer diameter is so that its one side can be by the casing of generation undergauge, and on the other hand due to the high expansion function of rubber, this reduces outer
Biggish expansion can occur for the packing element of diameter to seal oil jacket annulus.Therefore, the application embodiment provides one kind and can be suitably used for
The casing deformation well packer of the casing deformation well of undergauge occurs.
Detailed description of the invention
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, shape and proportional sizes of each component in figure etc. 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 casing deformation well packer of the application embodiment.
Specific embodiment
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 technical and scientific terms used herein and the technical field for belonging to 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 casing deformation well packer provided by present embodiment, may include: central tube 11；It is described
The pressure guide hole 13 for steam injection is provided on the side wall of central tube 11；Packing element 15 is movably sheathed on the central tube 11
Outer wall on and the covering pressure guide hole 13；The packing element 15 can expand outward under the pressure in the pressure guide hole 13；Protrusion
Portion 17, the lug boss 17 are disposed around on the outer wall of the central tube 11, and the lug boss 17 is located at the upper of the packing element 15
The outer side wall of side, the packing element 15 is equipped with support portion 21, and the support portion 21 extends towards the lug boss 17, and the support
Portion 21 is connected with the lug boss 17, and the support portion 21 can outer wall in the expansion outward of the packing element 15 with the packing element 15
It offsets, so that the lug boss 17 can offset with the upper end of the packing element 15.
In use, carrying out steam injection by central tube 11, such steam injection pressure is acted on packing element 15 by pressure guide hole 13 to be made
Elastic deformation occurs for packing element 15, thus Expansion sealing oil jacket annulus outward.Since support portion 21 can be when packing element 15 expands outward
It offsets with the outer wall of packing element 15, so that lug boss 17 can offset with the upper end of packing element 15, due to when packing element 15 expands outward, because
The effect of steam injection pressure, 15 lower end surface pressure of packing element are greater than upper surface, move up relative to 11 packing element 15 of central tube, so working as
When the outer wall of support portion 21 and packing element 15 offsets, support portion 21 can limit the range that the upper end of packing element 15 is displaced outwardly, to make
The upper end for obtaining packing element 15 can be restricted on the lower end surface of lug boss 17, so avoid the outwardly open feelings in the upper end of packing element 15
Condition, so that packing element 15 can be maintained at the state of sealing oil jacket annulus under the active force in pressure guide hole 13.
The casing deformation well packer described in the application embodiment it can be seen from above scheme can be by reducing packing element 15
Outer diameter so that its one side can by occur undergauge casing, on the other hand due to the high expansion function of rubber, this is reduced
Biggish expansion can occur for the packing element 15 of outer diameter to seal oil jacket annulus.Therefore, it is suitable to provide a kind of energy for the application embodiment
For the casing deformation well packer of the casing deformation well of undergauge to occur.
As shown in Figure 1, in the present embodiment, central tube 11 has opposite first end and second end.The central tube 11
First end on be connected with box cupling 24.So as to which central tube 11 is connected with external tubing string by the box cupling 24, to pass through
External tubing string is by 11 G.I.H of central tube.
In the present embodiment, the pressure guide hole 13 for steam injection is provided on the tube wall of central tube 11.The pressure guide hole 13
It can have the angle not for 0 °, 180 ° or 360 ° between center line and the axis of central tube 11.Preferably, the pressure guide hole 13
Center line and central tube 11 axis perpendicular, thus the steam energy face packing element 15 flowed out from pressure guide hole 13, to expand
Pressure suffered by packing element 15, so as to make packing element 15 that biggish deformation occur.
In the present embodiment, packing element 15 covers pressure guide hole 13.To which steam injection pressure can act on packing element 15 so that glue
Elastic deformation occurs for cylinder 15.Since packing element 15 is movably sheathed on central tube 11, so when elastic deformation occurs for packing element 15,
Because of the effect of steam injection pressure, 15 lower end surface pressure of packing element is greater than upper surface, moves up relative to 11 packing element 15 of central tube.Into
One step, it include rubber and asbestos in packing element 15.Since rubber has high-expansion, so on the one hand can be by reducing packing element
The casing of undergauge occurs to pass through for 15 outer diameter, and on the other hand the packing element 15 for reducing outer diameter can occur biggish swollen
Swollen, i.e., its external diameter is expanded to 161.7mm, so as to fit with the inner wall of casing to seal oil jacket annulus.Due to asbestos phase
It is bigger for the hardness of rubber, so asbestos can increase the hardness of packing element 15.It is interior in packing element 15 in order to be supported to packing element 15
Embedded with steel wire.After the completion of steam injection, since no pressure supports, packing element 15 bounces back, recovery original outer diameter, so as to by this Shen
Casing deformation well packer that please be described takes out.Therefore, the application embodiment provides a kind of set change that can be suitably used for that undergauge occurs
The casing deformation well packer of well.
Further, the inner wall of packing element 15 before steam injection with the outer wall palette of central tube 11.When to start steam injection,
The both ends of packing element 15 and the outer wall of central tube 11 mutually seal, and pressure suffered by packing element 15 can be so improved, so as to make packing element
15 occur biggish deformation.
In one embodiment, it encloses on the outer wall of the central tube 11 of 15 lower section of packing element equipped with retention bead 19, limit convex
Playing 19 can offset with the lower end of packing element 15.To which locating part can prevent the whereabouts of packing element 15.Specifically, locating part can be ring-type
Retention bead 19.Further, which can be continuous protrusion, be also possible to include multiple separately convex
Play unit.
In the present embodiment, lug boss 17 is disposed around on the outer wall of central tube 11.Specifically, lug boss 17 can be ring
The retention bead 19 of shape.Further, which can be continuous protrusion, be also possible to include it is multiple separately
Protrusion element.Lug boss 17 is used to offset with the upper end of packing element 15, to limit to the axial direction of packing element 15.
In one embodiment, lug boss 17 have in face of packing element 15 stop surface, stop surface can with packing element 15
Gap when upper end offsets between cartridge 15 and central tube 11.So as to prevent steam between packing element 15 and central tube 11
Gap location leakage, pressure suffered by packing element 15 can be so improved, so as to make packing element 15 that biggish deformation occur.
In the present embodiment, support portion 21 is enclosed set on the outside of packing element 15.The support portion 21 extends towards lug boss 17,
And the support portion 21 is connected with the lower end surface of lug boss 17, which can be outer with packing element 15 when packing element 15 expands outward
Wall offsets, so that lug boss 17 can offset with the upper end of packing element 15 namely support portion 21 is for the upper end outer edge to packing element 15
Divide and be supported, to prevent the generation flexible deformation of packing element 15 and the outer wall beyond lug boss 17.
In a specific embodiment, support device includes multiple supporting elements, and multiple supporting elements are along lug boss 17
Outer rim is uniformly arranged, and one end and the lug boss 17 of each supporting element are rotatably connected, the other end and packing element 15 of each supporting element
It is connected, and each supporting element has maximum value relative to the angle rotated with central tube 11.The maximum value is 85 °.From
And when steam injection, since elastic deformation occurs for packing element 15, so each supporting element can be relative to after the expansive force by packing element 15
Lug boss 17 rotates.So when supporting element has rotated the angle of maximum value, supporting element can form the outer rim of packing element 15 and limit
System.After the completion of steam injection, packing element 15 bounces back so that supporting element is rotated towards the direction of central tube 11, to realize deblocking.Certainly solution
Packing element 15 can also be forced to generate destruction, to bounce back by above mentioning central tube 11 when envelope.Further, each support
One end of part and the lower end surface of lug boss 17 are rotatably connected, and the other end of each supporting element is connected with packing element 15, so that
21 maximum outside diameter of support portion is less than the outer diameter of lug boss 17.So as to enable casing deformation well packer described in the application embodiment
By the casing deformation well that undergauge occurs.Specifically, one end of each supporting element is connect with 17 pivot 20 of lug boss.
Further, pressure guide hole 13 is located at central tube 11 close to the side of 15 upper end of packing element.So as to be conducive to packing element 15
Sealing back between one end and central tube 11 of lug boss 17.
In one embodiment, the outer diameter of lug boss 17 is 107mm, and the outer diameter of packing element 15 is 96mm, and support portion 21
Maximum outside diameter is less than the outer diameter of lug boss 17, and the outer diameter of retention bead 19 is less than the outer diameter of lug boss 17.So the application institute
The part for the casing deformation well packer largest outside diameter stated is lug boss 17.And the outer diameter of lug boss 17 is 107mm, since 107mm is small
In 152mm, so the set that casing deformation well packer described in the application embodiment can be less than 152mm by the internal diameter after undergauge becomes
Well.
It should be noted that term " first ", " second " etc. are used for description purposes only and distinguish in the description of the present application
Similar object between the two and is not present sequencing, can not be interpreted as indication or suggestion 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 provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring 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 benefit 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 of theme.
Claims (11)
1. a kind of casing deformation well packer characterized by comprising
Central tube；The pressure guide hole for steam injection is provided on the side wall of the central tube；
Packing element is movably sheathed on the outer wall of the central tube and covers the pressure guide hole；The packing element can be described
It is expanded outward under pressure in pressure guide hole；
Lug boss, the lug boss are disposed around on the outer wall of the central tube, and the boss is in the top of the packing element,
The outer side wall of the packing element is equipped with support portion, and the support portion extends towards the lug boss, and the support portion with it is described convex
Rise portion be connected, the support portion can the outer wall when the packing element expands outward with the packing element offset so that the lug boss
It can offset with the upper end of the packing element.
2. casing deformation well packer according to claim 1, it is characterised in that: the support portion includes multiple supporting elements, often
One end of a supporting element is rotatably connected with the lug boss, and the other end of each supporting element is connected with the packing element
It connects, and each supporting element has maximum value relative to the angle rotated with the central tube.
3. casing deformation well packer according to claim 2, it is characterised in that: the maximum value is 85 °.
4. casing deformation well packer according to claim 2, it is characterised in that: one end of each supporting element with it is described convex
The portion of rising is pivotally connected.
5. casing deformation well packer according to claim 2, it is characterised in that: multiple supporting elements are along the lug boss
Outer rim is uniformly arranged.
6. casing deformation well packer according to claim 1, it is characterised in that: it is close that the pressure guide hole is located at the central tube
The side of the packing element upper end, and the axis perpendicular of the center line of the pressure guide hole and the central tube.
7. casing deformation well packer according to claim 1, it is characterised in that: the inner wall of the packing element before steam injection with it is described
The outer wall of central tube seals cooperation.
8. casing deformation well packer according to claim 1, it is characterised in that: the central tube below the packing element it is outer
It is enclosed on wall equipped with retention bead, the retention bead can offset with the lower end of the packing element.
9. casing deformation well packer according to claim 1, it is characterised in that: the outer diameter of the lug boss is 107mm, described
The outer diameter of packing element is 96mm.
10. casing deformation well packer according to claim 1, it is characterised in that: include rubber and asbestos in the packing element.
11. casing deformation well packer according to claim 1, it is characterised in that: be embedded with steel wire in the packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820596310.8U CN208330264U (en) | 2018-04-25 | 2018-04-25 | casing deformation well packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820596310.8U CN208330264U (en) | 2018-04-25 | 2018-04-25 | casing deformation well packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208330264U true CN208330264U (en) | 2019-01-04 |
Family
ID=64778986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820596310.8U Active CN208330264U (en) | 2018-04-25 | 2018-04-25 | casing deformation well packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208330264U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN110924905A (en) * | 2019-12-13 | 2020-03-27 | 孙肖 | Layered oil production device for petroleum deformation cased well |
| CN110939403A (en) * | 2019-12-13 | 2020-03-31 | 孙肖 | Double hydraulic bidirectional anchoring packer |
-
2018
- 2018-04-25 CN CN201820596310.8U patent/CN208330264U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN110924905A (en) * | 2019-12-13 | 2020-03-27 | 孙肖 | Layered oil production device for petroleum deformation cased well |
| CN110939403A (en) * | 2019-12-13 | 2020-03-31 | 孙肖 | Double hydraulic bidirectional anchoring packer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208330264U (en) | casing deformation well packer | |
| CN101858203B (en) | Self-energizing annular seal | |
| CN105156065B (en) | Seal and compression packer | |
| CN103348093B (en) | There is the inflatable open hole packer of the scoped features of expansion | |
| CN103348094A (en) | Expandable packer with expansion induced axially movable support feature | |
| CN108138821B (en) | The manufacturing method of conjugant, fluid-pressure cylinder and conjugant | |
| CN203867512U (en) | Hydraulic expansion and self-locking seal type well-flushable packer | |
| CN106639964A (en) | High leakproofness shoulder-protrusion resistant compression type packer | |
| BR112017024171B1 (en) | EXPANDABLE METALLIC BOTTOM TUBULAR, ANNULAR PROTECTION, BOTTOM FINALIZATION AND SEALING METHOD | |
| JP2013204592A5 (en) | ||
| CN205559776U (en) | Ring grain calathiform stopper | |
| CN105156063A (en) | Framework type sealing element and packer | |
| CN204024579U (en) | The expanding spacer ring of combined type packing element shoulder protector | |
| CN109707468A (en) | A kind of efficient seal structure applied between static casing | |
| CN113187430A (en) | Self-expansion type high-efficiency packer | |
| CN217440001U (en) | Compression packer with shoulder outburst prevention structure | |
| CN204420171U (en) | Two way sealed valve seat construction and ultralow temperature fill formula fixing ball valve | |
| CN107916908A (en) | In-pipe composite sealing mechanism | |
| KR101386663B1 (en) | The slip joint | |
| CN105909206A (en) | Closed compressed rubber sleeve sealing unit | |
| CN206246088U (en) | It is a kind of can deblocking with pressure inflatable packer | |
| CN209277953U (en) | Follow-up sealing device | |
| CN209040796U (en) | Sleeve type ripple self-expanding packing element | |
| CN206694721U (en) | Floating sealed sleeve expansion joint | |
| CN205655007U (en) | Novel rubber connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |