CN206418996U - One kind water suction Self-expandable packer - Google Patents
One kind water suction Self-expandable packer Download PDFInfo
- Publication number
- CN206418996U CN206418996U CN201621379849.5U CN201621379849U CN206418996U CN 206418996 U CN206418996 U CN 206418996U CN 201621379849 U CN201621379849 U CN 201621379849U CN 206418996 U CN206418996 U CN 206418996U
- Authority
- CN
- China
- Prior art keywords
- rubber cylinder
- packing element
- short rubber
- baffle ring
- water swelling
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000012856 packing Methods 0.000 claims abstract description 59
- 230000008961 swelling Effects 0.000 claims abstract description 37
- 239000013536 elastomeric material Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 150000008363 butyronitriles Chemical class 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 230000004323 axial length Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses a kind of water suction Self-expandable packer; it is related to petroleum technology apparatus field; including heart axle, upper baffle ring, water swelling packing element and lower baffle ring; water swelling packing element is bonded as one by vulcanization with heart axle; upper baffle ring and lower baffle ring are fixed on heart axle by welding or engagement thread, set the upper end protection short rubber cylinder being set on heart axle, lower end protection short rubber cylinder between water swelling packing element and upper baffle ring and lower baffle ring respectively；The upper end protection short rubber cylinder and bottom protection short rubber cylinder are elastomeric material；After absorbing water, its end protects short rubber cylinder and lower end protection short rubber cylinder to extrude to water swelling packing element to upper end, and the axial length of upper end protection short rubber cylinder and lower end protection short rubber cylinder reduces and packing element outer wall laminating well；The utility model solves the flimsy problem in end of existing water suction Self-expandable packer water swelling short rubber cylinder.
Description
Technical field
The utility model is related to Oil Test Equipment field, more particularly to a kind of water suction Self-expandable packer.
Background technology
Self-expandable packer is a kind of underground operation tool, and its effect is to separate full well oil-gas Layer by interval, to divide
Necessary technical measures are implemented in layer production.In oil-gas exploration and development field, conventional packer is deposited under the conditions of bad hole
In problems, difficulty of such as going into the well, the bad adaptability to bore hole irregular borehole causes total completion time to be difficult to ensure that.With
Packer continue to develop and deeply, the invention of water uptake expansion packer can solve problem above, it can underground aqueous medium
In expand such that and set, be widely used in the operations such as horizontal well in segments exploitation, control water blocking water, reservoir reconstruction and auxiliary cement well
In.
The structure composition of water uptake expansion packer is at present：Heart axle, self-expanding rubber packing element (water swelling packing element), baffle ring
Deng.
The patent of Patent No. 201310519347.2 is disclosed a kind of " Self-expandable packer ", including base tube, self-expanding
Rubber packing element and end protrusion-resisting protective device, wherein self-expanding rubber packing element are bonded as one by vulcanization with base tube, and end is prevented
Prominent protection device is typically fixed on base tube by holding screw.The shortcoming of this scheme is：On the one hand, due to self-expanding rubber
Packing element end is directly wrapped up by metal baffle ring, self-expanding rubber packing element end expansion, although prevent self-expanding rubber packing element to send out
Raw axial movement, but self-expanding rubber packing element end is entirely limited, packing element end water swelling radially easily tear, to from swollen
The intensity effect of swollen rubber packing element is very big；On the other hand limited due to the axial direction of the end of self-expanding rubber packing element, it has
Effect seal length is decreased.
Patent No. 204113202U patent " one kind meets oil water suction Self-expandable packer " is directed to Patent No.
201310519347.2 patent is improved, and it, which is constituted, includes base tube, self-expanding packing element and ring assemblies (including end ring, spiral shell
Nail and spacing ring), the principle of anti-self-expanding packing element end fail in shear is in this patent：When meeting oil, water swelling, with certainly
Being swelled for packing element is expanded, the spacing ring at its two ends can be deformed therewith, because spacing ring is made up of rubber, therefore have enough
Intensity wraps the end of self-expanding packing element, to protect the end of self-expanding packing element, prevents self-expanding packing element from being swelled and squeezes vertically
Go out.But the structure still has shortcoming：Because packer will bear huge pressure difference in underground, flexible end portion protection is thin type structure,
It is easily damaged under huge pressure effect, the end protection of packing element is failed therewith, influences packer effect；In addition, packing element end
Portion is radially restrained, influences effective seal length of packing element.
Utility model content
The purpose of this utility model is：Solve that the end of water swelling packing element in the prior art is easily damaged asks
Topic, so as to provide a kind of water suction Self-expandable packer, packing is improved by improving the protection structure of water swelling packing element end
The sealability of device.
The technical solution of the utility model is as follows：
One kind water suction Self-expandable packer, including heart axle, upper baffle ring, water swelling packing element and lower baffle ring, water swelling glue
Cylinder is bonded as one by vulcanization with heart axle, and upper baffle ring and lower baffle ring are fixed on heart axle by welding or engagement thread, are absorbed water
The upper end protection short rubber cylinder being set on heart axle, lower end is set to protect short glue between expansion packing element and upper baffle ring and lower baffle ring respectively
Cylinder；The upper end protection short rubber cylinder and bottom protection short rubber cylinder are elastomeric material.Water swelling packing element after absorbing water, its end
Portion protects short rubber cylinder and bottom protection short rubber cylinder to extrude to upper end, and upper end protection short rubber cylinder and bottom protection are short
The axial length of packing element reduces and packing element outer wall laminating well.
Further, the upper end guarantor portion shield a shortcoming or fault packing element and bottom protection short rubber cylinder anti-shear ability be more than absorb water it is swollen
Water swelling packing element after swollen.
Preferably, the upper end protection short rubber cylinder and bottom protection short rubber cylinder use hydrogenated butyronitrile material.
Further, the end contracting of the water swelling packing element, upper end protection short rubber cylinder and bottom protection short rubber cylinder
Footpath is into arc surface.
Water swelling packing element, 1~1.5 times of its expansion multiplying power are being selected, hardness is more than 80HA, and breaking strength is more than 10MPa,
15~20MPa/m of sealability, more than 150 DEG C of heat resistance.
The utility model is used after such scheme, and acquirement has the beneficial effect that：
(1) protection packing element is added between water swelling packing element and baffle ring, when under water swelling packing element absorption well or stratum
Water, start expansion, its axial expansion extruding upper end protection short rubber cylinder and bottom protection short rubber cylinder, make protection short rubber cylinder pressure
Contracting, protects such water swelling packing element all to be expanded on axially and radially, and protection short rubber cylinder is radially expanded and protection short rubber cylinder is adopted
Hydrogenated butyronitrile material is used, the anti-shear ability and elasticity of this material can be very good, it is therefore prevented that bar of the water swelling packing element in pressure difference
Portion's protrusion of breaking under part is destroyed.
(2) end diameter reducing of water swelling packing element, upper end protection short rubber cylinder and bottom protection short rubber cylinder is into circular arc
Face, which increase their own surface area, also, this also causes water swelling packing element and upper and lower side to form one between protecting packing element
Individual slight space, during water suction so that the expansion space of water swelling packing element end is bigger.
(3) sealed axial distance is added, sealing property is improved.
Brief description of the drawings
Fig. 1 is the state diagram before a kind of Self-expandable packer that absorbs water of the present utility model is set；
Fig. 2 is the state diagram after a kind of Self-expandable packer that absorbs water of the present utility model is set；
Marked in figure：1- heart axles, 2- upper baffle rings, 3- upper ends protection short rubber cylinder, 4- water swelling packing elements, 5- bottoms
Protect short rubber cylinder, 6- lower baffle rings, 7- wells.
Embodiment
Below, the present invention will be described in more details with reference to accompanying drawing, all features disclosed in this specification are removed
Mutually exclusive feature and in addition, can be combined in any way.The present invention is done by embodiment below in conjunction with the accompanying drawings
Further illustrate, embodiments of the invention include but is not limited to following examples.
Embodiment 1
As shown in figure 1, a kind of water suction Self-expandable packer, including heart axle 1, upper baffle ring 2, water swelling packing element 4 and lower block
Ring 6, water swelling packing element 4 is bonded as one by vulcanization with heart axle, and upper baffle ring and lower baffle ring are solid by welding or engagement thread
It is scheduled on heart axle, the upper end protection being set on heart axle 1 is set respectively between water swelling packing element 4 and upper baffle ring 2 and lower baffle ring 6
Short rubber cylinder 3, lower end protection short rubber cylinder 5；Short rubber cylinder 3 and bottom protection short rubber cylinder 5 is protected to be elastomeric material in upper end；Upper end
Short rubber cylinder 3 and the anti-shear ability of bottom protection short rubber cylinder 5 is protected to be more than the water swelling packing element 4 after water swelling.Upper end
Short rubber cylinder 3 and bottom protection short rubber cylinder 5 is protected to use hydrogenated butyronitrile material in portion.The expansion multiplying power 1 of water swelling packing element 4~
1.5 times, hardness is more than 80HA, and breaking strength is more than 10MPa, 15~20MPa/m of sealability, more than 150 DEG C of heat resistance.
The end diameter reducing of water swelling packing element 4, upper end protection short rubber cylinder 3 and bottom protection short rubber cylinder 5 is into arc surface.
As shown in Fig. 2 when water swelling packing element 4 absorbs water or after oil suction, radially, hold to expansion simultaneously, its end is in extruding
Protect short rubber cylinder 3 and bottom protection short rubber cylinder 5 in end；Upper end protect short rubber cylinder 3 and bottom protection short rubber cylinder 5 due to by
To axial compression, its is radially enlarged, its outer wall laminating well, and this is equivalent to further increase sealing effective length.
Claims (4)
1. one kind water suction Self-expandable packer, including heart axle (1), upper baffle ring (2), water swelling packing element (4) and lower baffle ring (6),
It is set in characterized in that, being set respectively between water swelling packing element (4) and upper baffle ring (2) and lower baffle ring (6) on heart axle (1)
Upper end protection short rubber cylinder (3) and lower end protection short rubber cylinder (5)；The upper end protection short rubber cylinder (3) and bottom protection are short
Packing element (5) is elastomeric material.
2. a kind of water suction Self-expandable packer according to claim 1, it is characterised in that protect short rubber cylinder in the upper end
(3) and bottom protection short rubber cylinder (5) anti-shear ability be more than water swelling after water swelling packing element (4).
3. a kind of water suction Self-expandable packer according to claim 1, it is characterised in that protect short rubber cylinder in the upper end
(3) and bottom protection short rubber cylinder (5) use hydrogenated butyronitrile material.
4. a kind of water suction Self-expandable packer according to claim 1, it is characterised in that the water swelling packing element (4),
The end diameter reducing of short rubber cylinder (5) is protected into arc surface in upper end protection short rubber cylinder (3) and bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621379849.5U CN206418996U (en) | 2016-12-15 | 2016-12-15 | One kind water suction Self-expandable packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621379849.5U CN206418996U (en) | 2016-12-15 | 2016-12-15 | One kind water suction Self-expandable packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206418996U true CN206418996U (en) | 2017-08-18 |
Family
ID=59575859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621379849.5U Expired - Fee Related CN206418996U (en) | 2016-12-15 | 2016-12-15 | One kind water suction Self-expandable packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206418996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944569A (en) * | 2017-11-27 | 2019-06-28 | 李明 | A kind of petroleum underground operation tool |
-
2016
- 2016-12-15 CN CN201621379849.5U patent/CN206418996U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944569A (en) * | 2017-11-27 | 2019-06-28 | 李明 | A kind of petroleum underground operation tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 618300, Sichuan, Deyang, Zhongshan Guanghan Road south two section drilling Co-patentee after: CHENGDU TUOKE SEALING MEMBER CO.,LTD. Patentee after: DRILLING & PRODUCTION ENGINEERING TECHNOLOGY RESEARCH INSTITUTE OF CNPC CHUANQING DRILLING EXPLORATION Co. Address before: 618300, Sichuan, Deyang, Zhongshan Guanghan Road south two section drilling Co-patentee before: CHENGDU TOM SEALING ELEMENT CO.,LTD. Patentee before: DRILLING & PRODUCTION ENGINEERING TECHNOLOGY RESEARCH INSTITUTE OF CNPC CHUANQING DRILLING EXPLORATION Co. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 Termination date: 20191215 |