CN205977167U - Steel skeleton expanding packer - Google Patents
Steel skeleton expanding packer Download PDFInfo
- Publication number
- CN205977167U CN205977167U CN201620881216.8U CN201620881216U CN205977167U CN 205977167 U CN205977167 U CN 205977167U CN 201620881216 U CN201620881216 U CN 201620881216U CN 205977167 U CN205977167 U CN 205977167U
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- packing element
- outer packing
- steel skeleton
- shoulder protector
- return spring
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Abstract
The utility model provides a steel skeleton expanding packer, solves packing element that prior art exists, and to resume the speed of life size slow, and it is few that repeated seat seals the number of times, and the outstanding effect of shoulder is serious, but low problem is rateed to recycle. Including center tube, packing element, top connection and lower clutch, its technical essential is: the packing element cup joints in the center tube outside, and the both ends of packing element set up the shoulder pad respectively, and the both ends of center tube, the inboard of shoulder pad set up the catch, be provided with between the shoulder pad of lower clutch and center tube lower extreme and press the cover, the packing element is by interior packing element, and the steel skeleton that sets up between outer packing element and interior packing element and the outer packing element is formed, and the both ends of outer packing element are provided with return spring respectively, and the tip of shoulder pad and outer packing element passes through return spring and links to each other, and the shoulder pad sets up the spiral annular groove with the inner wall of the one end that outer packing element links to each other. Its reasonable in design, compact structure, the pressure -bearing dynamic height of packing element, recovery rate are fast, remnant deformation is little, can repeated seat to seal the number of times many, sealed effectual, use reliable and stablely, the height is rateed to recycle.
Description
Technical field
This utility model belongs to petroleum-gas fiedl underground operation tool technical field and in particular to a kind of packing element resume speed is fast,
Repeating sets often, and remaining deformation is little, good stability, the high steel skeleton inflatable packer of recovery utilization rate.
Background technology
Steel skeleton inflatable packer is mainly used in acidification of oil field pressure break, the construction technology such as stifled is squeezed in layering, is important well
Lower power tool, wherein rubber tube with steel frame are the core components of this inflatable packer.Steel skeleton inflatable packer is a kind of
Hydraulic expanding packer, suspension type is fixed, hydraulic setting, and hydraulic pressure unseals；Packing element is relied on to expand outwardly to insulate oil, sleeve ring
Shape space.When arriving precalculated position under packer, add hydraulic oil, when inside and outside pressure reduction reaches 0.3-1.0MPa, packing element from oil pipe
Expansion, closes oil sets annular space.When needing deblocking, discharge the hydraulic oil in oil pipe, so that packing element is restored to the original state, realize solution
Envelope.
Existing steel skeleton inflatable packer is had the characteristics that as casing play with high resiliency, high-strength stainless steel band：（1）
Flare factor is big, can insulate large hole with minor diameter packing element；（2）Easily expand and shrink, that is, easily setting and deblocking；
（3）Temperature resistant grade is high, typically up to 125 DEG C -150 DEG C, has the high temperature that can tolerate 180 DEG C during particular/special requirement；（4）Pressure-bearing difference is big,
Up to 80MPa；（5）To well strong adaptability, can be applicable in casing deformation well and the technological measure of open hole well；（6）Setting can
Lean on, reusable（Refer to formation testing aspect）.
Although existing steel skeleton packer alleviates shoulder stress concentration phenomenon to a certain extent, extend packer
Service life, but still there is the prominent effect of more serious shoulder, and the full-sized speed of packing element recovery is slower, repeats to sit
Number is few, and recoverable rate is low, is easily caused the generation of down-hole accident.Therefore be necessary for current underground construction and pressure break work
The higher demand of skill, and the problem that conventional steel skeleton packing element exists, give to existing steel skeleton inflatable packer
Improve.
Utility model content
This utility model is aiming at the problems referred to above, provides a kind of packing element resume speed fast, repeats and set often, residual
Remaining deflection is little, good stability, the high steel skeleton inflatable packer of recovery utilization rate.
This utility model be employed technical scheme comprise that：This steel skeleton inflatable packer includes central canal, packing element, above connects
Head and lower contact, are characterized in that：Described packing element is socketed in outside central canal, and the two ends of packing element are respectively arranged with shoulder protector, in
The two ends of heart pipe, the inner side of shoulder protector are provided with lock ring；The upper end of the centrally disposed pipe of described top connection, described lower contact is arranged on
The lower end of central canal, is provided with gland between the bottom shoulder protector of lower contact and central canal lower end；Between top connection and top shoulder protector,
It is provided with sealing ring, between gland and bottom shoulder protector between top connection and top lock ring, between lower contact and bottom lock ring all
It is provided with sealing gasket；Described packing element includes the steel skeleton of setting between interior packing element, outer packing element, and interior packing element and outer packing element, interior
Packing element, outer packing element are connected by welding ring respectively with the two ends of steel skeleton；The two ends of outer packing element are respectively arranged with return spring, institute
The end stating shoulder protector with outer packing element is connected by return spring, and the inwall of one end that shoulder protector is connected with outer packing element is provided with helical ring
Connected in star.
The described opposite side being respectively provided with the return spring at outer packing element two ends is and tightly polishes structure.To eliminate return
The half-turn helical of spring end, makes spring end become the annulus almost closing, and increases spring and its supporting supporting surface
Contact area, makes spring not produce axle of spring distortion in the range of work elastic force as far as possible.
The return spring of described outer packing element end setting is screwed into the number of coils in the helical annular groove of shoulder protector inwall
For 3-4 circle, the number of coils that return spring stays outside shoulder protector is 3 circles.To realize firm connection, and reach good contraction effect
Really.
A diameter of 3.0-4.5mm of the return spring that described outer packing element two ends are respectively provided with.So that the expansion of packing element and contracting
The process of returning is more smooth and rapid.
Described by interior packing element, steel skeleton and outer packing element composition packing element, and outer packing element two ends arrange shoulder protector, with center
Socket mode outside pipe is being fixedly connected of Whole-dismountable.In the way of by changing packing element, recycling packer
Other parts, improve recovery utilization rate.
The beneficial effects of the utility model：Because this utility model is socketed in outside central canal using packing element, the two of packing element
End is respectively provided with shoulder protector, the two ends of central canal, the inner side setting lock ring of shoulder protector；The upper end of the centrally disposed pipe of top connection, under connect
The lower end of centrally disposed pipe, is provided with gland between the shoulder protector of lower contact and central canal lower end；Packing element is by interior packing element, outer glue
The steel skeleton composition of setting between cylinder and interior packing element and outer packing element, the two ends of outer packing element are respectively arranged with return spring, shoulder protector
It is connected by return spring with the end of outer packing element, the inwall of one end that shoulder protector is connected with outer packing element arranges helical annular groove
Version, so it is reasonable in design, compact conformation, the bearing capacity of packing element is high, resume speed is fast, the stress concentration of packing element shoulder
And shoulder effect is few, residual deformation is little, repeats and sets often, good sealing effect, using reliable and stable, recovery utilization rate
High.
Brief description
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
After Fig. 3 is packing element expansion in Fig. 1（Packer setting）Structural representation.
Fig. 4 is the structural representation of the shoulder protector in Fig. 1.
In figure number explanation：1 top connection, 2 sealing rings, 3 sealing gaskets, 4 lock rings, 5 welding ring, 6 shoulder protectors, 7 return springs, 8
Steel skeleton, 9 central canals, packing element, 11 outer packing elements, 12 glands, 13 lower contacts, 14 helical annular grooves in 10.
Specific embodiment
Describe concrete structure of the present utility model according to Fig. 1～4 in detail.This steel skeleton inflatable packer includes central canal
9, the packing element of central canal 9 outside socket, the top connection 1 of the upper end setting of central canal 9, and under the lower end setting of central canal 9
The two ends of joint 13, wherein packing element are respectively arranged with shoulder protector 6, and the two ends of central canal 9, the inner side of shoulder protector 6 are respectively arranged with lock ring
4, it is provided with the gland 12 for adjustment assembly gap between the bottom shoulder protector 6 of lower contact 13 and central canal 9 lower end；Central canal 9
It is provided with sealing ring 2, gland 12 and the bottom shoulder protector 6 of central canal 9 lower end between the top connection 1 of upper end setting and top shoulder protector 6
Between be also equipped with sealing ring 2；It is provided with sealing gasket 3, center between the top connection 1 of central canal 9 upper end setting and top lock ring 4
It is again provided with sealing gasket 3 between the lower contact 13 of pipe 9 lower end setting and bottom lock ring 4.It is socketed in the glue in central canal 9 outside
Cylinder, is made up of the thin tubular steel skeleton 8 of setting between interior packing element 10, outer packing element 11 and interior packing element 10 and outer packing element 11, hose lining
The two ends of cylinder 10, outer packing element 11 and steel skeleton 8 are connected together by welding ring 5 respectively.The two ends of outer packing element 11 are respectively provided with
Have the return spring 7 for assisting packing element to reset, return spring 7 and outer packing element 11 by hot vulcanization process glue admittedly together with, two
The shoulder protector 6 at end is connected by return spring 7 with two ends of outer packing element 11, respectively to prevent the slip of outer packing element 11.And
And on the inwall of one end that is connected with outer packing element 11 of shoulder protector 6, it is provided with the helical annular groove for matching with return spring 7
14, the return spring 7 at outer packing element 11 two ends is connected in the helical annular groove 14 of shoulder protector 6 inwall respectively.In order to realize consolidating
Connect, and reach good contractive effect, the return spring 7 of outer packing element 11 end setting is screwed into the helical ring of shoulder protector 6 inwall
The number of coils in connected in star 14 is enclosed for 3-4, and the number of coils staying shoulder protector 6 outside is 3 circles.
In order that spring does not produce axle of spring distortion in the range of work elastic force as far as possible, it is respectively provided with 11 liang of outer packing element
The opposite side of the return spring 7 at end is designed to and tightly polishes version, to eliminate the half-turn helical of return spring 7 end,
Making spring end become the annulus almost closing, thus increasing the contact area of spring and its supporting supporting surface, reaching reason
The using effect thought.
For allowing the expansion of packing element and the more smooth and rapid purpose of retraction process, outer packing element 11 two ends are respectively provided with
Return spring 7 a diameter of 3.0-4.5mm.
In order to improve the recovery utilization rate of device, by interior packing element 10, outer packing element 11, set between interior packing element 10 and outer packing element 11
The packing element of steel skeleton 8 composition put, and the shoulder protector 6 of outer packing element 11 two ends setting, are designed with the socket mode in central canal 9 outside
Being fixedly connected for Whole-dismountable, in the way of by changing packing element, other parts of recycling packer, energy-saving ring
Protect.
During use, precalculated position, then, the feed liquor that opens up will be arrived under this steel skeleton inflatable packer from central canal 9
Groove adds hydraulic oil, and when inside and outside pressure reduction reaches 0.3-1.0MPa, the interior packing element 10 of internal layer is pressurized to start to expand, thus driving
The outer packing element 11 of the steel skeleton 8 in intermediate layer and outer layer expands outwardly together, closes oil sets annular space.When whole packing element is swollen
When swollen, packer carries out setting, the return spring 7 of outer packing element 11 two ends setting is axially compressed, same in storage compression energy
When, effectively alleviate packing element shoulder stress and concentrate caused shoulder effect.
When needing deblocking, discharge the hydraulic oil in central canal 9, so that packing element is shunk, restore to the original state.Receive in whole packing element
During contracting, removing seal for packer, due to weakening so that the compression energy of return spring 7 storage is released of external force, this is released
The energy put acts on the outer packing element 11 of outer layer, thus driving the steel skeleton 8 in intermediate layer and the interior packing element 10 of internal layer to receive together
Contracting, to realize the quick deblocking of packer.As can be seen here, the design of return spring 7 should be set at outer packing element 11 two ends of packing element,
Not only effectively alleviate the shoulder effect that packing element shoulder stress concentration causes, also speed up the recovery speed after packing element deformation simultaneously
Degree, remaining deformation is little, times of fatigue is many.It was verified that it is notable using shoulder effect during this steel skeleton inflatable packer
Reduce, and fatigue（Setting）Number of times up to 15 times, the times of fatigue of domestic general packer product is 4-5 time.
Packing element is the core component of this steel skeleton inflatable packer, due to by the shoulder protector of the packing element of packer and two ends
6 be designed as can integral demounting version so that packing element can flexibly, be easily removed replacing, and other portions of packer
Part repeats and utilizes, and improves recovery utilization rate, and producing for industrial low-carbon environment-friendly has certain reference directive function.
During the packing element processing of this steel skeleton inflatable packer, process in shoulder protector 6 and return spring 7 mating shapes
Helical annular groove 14, return spring 7 is screwed in the helical annular groove 14 of shoulder protector 6, central canal 9 is positioned, so
The steel skeleton 8 arranging in shoulder protector 6 welding afterwards, hangs rubber on steel skeleton 8 and return spring 7, then banding, finally loading mould
Tool, by hot vulcanization process make return spring 7 and rubber glue admittedly together with.Hot vulcanization process is the known of those skilled in the art
General knowledge here is not done to apply and is stated.Pre-buried return spring 7 in outer packing element 11, is special, has enough comprcssive strength springs, and adopt
The version with one end and tightly polishing, the diameter of spring material can be 3.0mm, 3.5mm, 4.0mm or 4.5mm.
Claims (5)
1. a kind of steel skeleton inflatable packer, including central canal（9）, packing element, top connection（1）And lower contact（13）, its feature
It is：Described packing element is socketed in central canal（9）Outside, the two ends of packing element are respectively arranged with shoulder protector（6）, central canal（9）Two ends,
Shoulder protector（6）Inner side be provided with lock ring（4）；Described top connection（1）Centrally disposed pipe（9）Upper end, described lower contact（13）
Centrally disposed pipe（9）Lower end, lower contact（13）With central canal（9）The bottom shoulder protector of lower end（6）Between be provided with gland
（12）；Top connection（1）With top shoulder protector（6）Between, gland（12）With bottom shoulder protector（6）Between be provided with sealing ring（2）, on
Joint（1）With top lock ring（4）Between, lower contact（13）With bottom lock ring（4）Between be provided with sealing gasket（3）；Described glue
Packing element in cylinder inclusion（10）, outer packing element（11）, and interior packing element（10）With outer packing element（11）Between setting steel skeleton（8）, interior
Packing element（10）, outer packing element（11）And steel skeleton（8）Two ends respectively pass through welding ring（5）It is connected；Outer packing element（11）Two ends divide
It is not provided with return spring（7）, described shoulder protector（6）With outer packing element（11）End pass through return spring（7）It is connected, shoulder protector（6）
With outer packing element（11）The inwall of connected one end is provided with helical annular groove（14）.
2. steel skeleton inflatable packer according to claim 1 it is characterised in that：Described it is respectively provided with outer packing element
（11）The return spring at two ends（7）Opposite side be and tightly polish structure.
3. steel skeleton inflatable packer according to claim 1 it is characterised in that：Described outer packing element（11）End is arranged
Return spring（7）It is screwed into shoulder protector（6）The helical annular groove of inwall（14）The interior number of coils is enclosed for 3-4, return spring
（7）Stay shoulder protector（6）The number of coils in outside is 3 circles.
4. steel skeleton inflatable packer according to claim 1 it is characterised in that：Described outer packing element（11）Two ends are respectively
The return spring of setting（7）A diameter of 3.0-4.5mm.
5. steel skeleton inflatable packer according to claim 1 it is characterised in that：Described by interior packing element（10）, reinforcing bar
Frame（8）With outer packing element（11）The packing element of composition, and outer packing element（11）The shoulder protector of two ends setting（6）, with central canal（9）Outside
Socket mode is being fixedly connected of Whole-dismountable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620881216.8U CN205977167U (en) | 2016-08-15 | 2016-08-15 | Steel skeleton expanding packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620881216.8U CN205977167U (en) | 2016-08-15 | 2016-08-15 | Steel skeleton expanding packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977167U true CN205977167U (en) | 2017-02-22 |
Family
ID=59977534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620881216.8U Active CN205977167U (en) | 2016-08-15 | 2016-08-15 | Steel skeleton expanding packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977167U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316882A (en) * | 2018-04-09 | 2018-07-24 | 雅安万利橡塑密封技术有限责任公司 | Outer packing element of a kind of packer solubility expanding and preparation method thereof |
| CN110500059A (en) * | 2018-05-18 | 2019-11-26 | 中国石油化工股份有限公司 | A kind of amplificate packer packing element of snapback |
| CN117189024A (en) * | 2023-10-13 | 2023-12-08 | 中国石油大学(北京) | Oil pipe passing packer with corrugated and net-shaped composite steel skeleton |
-
2016
- 2016-08-15 CN CN201620881216.8U patent/CN205977167U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316882A (en) * | 2018-04-09 | 2018-07-24 | 雅安万利橡塑密封技术有限责任公司 | Outer packing element of a kind of packer solubility expanding and preparation method thereof |
| CN110500059A (en) * | 2018-05-18 | 2019-11-26 | 中国石油化工股份有限公司 | A kind of amplificate packer packing element of snapback |
| CN110500059B (en) * | 2018-05-18 | 2021-06-08 | 中国石油化工股份有限公司 | Expansion packer rubber barrel capable of retracting rapidly |
| CN117189024A (en) * | 2023-10-13 | 2023-12-08 | 中国石油大学(北京) | Oil pipe passing packer with corrugated and net-shaped composite steel skeleton |
| CN117189024B (en) * | 2023-10-13 | 2024-06-18 | 中国石油大学(北京) | Oil pipe passing packer with corrugated and net-shaped composite steel skeleton |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 124000 oil new and high technology industrial park of Panjin Economic Development Zone, Liaoning province 19 Patentee after: PANJIN JINYI SPECIAL RUBBER PRODUCTS Co.,Ltd. Address before: 124000 petroleum high tech Industrial Park, Panjin Economic Development Zone, Liaoning Province, No. 19 Patentee before: PANJIN GOLD ANTS SPECIAL RUBBER PRODUCTS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 124000 No. 19, petroleum high tech Industrial Park, Panjin Economic Development Zone, Liaoning Province Patentee after: Liaoning Tianyuan Daben Technology Group Co.,Ltd. Address before: 124000 No. 19, petroleum high tech Industrial Park, Panjin Economic Development Zone, Liaoning Province Patentee before: PANJIN JINYI SPECIAL RUBBER PRODUCTS Co.,Ltd. |