CN202990954U - Low damping reversing packer - Google Patents
Low damping reversing packer Download PDFInfo
- Publication number
- CN202990954U CN202990954U CN 201220623166 CN201220623166U CN202990954U CN 202990954 U CN202990954 U CN 202990954U CN 201220623166 CN201220623166 CN 201220623166 CN 201220623166 U CN201220623166 U CN 201220623166U CN 202990954 U CN202990954 U CN 202990954U
- Authority
- CN
- China
- Prior art keywords
- reversing
- packer
- slips
- rotatably connected
- annular groove
- 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 - Lifetime
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Abstract
The utility model provides a low damping reversing packer which comprises a central pipe, a centering guide which is arranged between joints which are arranged at two ends of the central pipe, a reversing pin mechanism of the centering guide, a rotating connection sleeve, a slip assembly and a plurality of sections of rubber sleeves. A rolling friction pair is arranged in a sliding match surface of a slip holder of the slip assembly and the rotating connection sleeve. The low damping reversing packer has the advantages of greatly reducing reversing damping in reversing seat-seal operation, enabling reversing rotation to be flexible, avoiding jamming and simultaneously guaranteeing the reliability of reversing.
Description
Technical field
The utility model relates to the grappling reversing arrangement of oil well packer.
Background technology
Packer must be completed grappling setting by lower after the set depth of down-hole, thus performance packer oil reservoir separate zone production purpose.Grappling is setting applies to packer the axial stroke that radial rotating produces compression packing element and slips, makes packing element and slips produce radial dilatation, is full of to internal surface of sleeve pipe by this compand and realizes grappling, reaches the fixedly purpose of tubing string.
The process of above-mentioned axial compression, also that whole system is by the process of free state to the operating conditions conversion, on this process, tubing string drive centralizer rotates in a circumferential direction, existing packer adopts is to connect change and the inside and outside periphery that overlaps of the being rotatably connected pair that is slidably matched, this fit structure frictional damping is large, existence turns to inflexible technical problem, but also exists impurity easily to invade the phenomenon of fitting face, generation jam.
Summary of the invention
The present utility model purpose is to improve setting flexibility and the sealing performance that turns to cooperation of grappling, and a kind of low-resistance reversing packer is provided.The low-resistance reversing packer technical scheme that the utility model provides, its main technical content is: a kind of low-resistance reversing packer, its structure forms and comprises that the centralizer between central tube, central tube two end joints, the reversing pin mechanism of centralizer, the cover that is rotatably connected, slips assembly and more piece packing element consist of, and wherein is provided with rolling friction pair in the slips support of slips assembly and the face that is slidably matched that overlaps that is rotatably connected.
In above-mentioned overall technical architecture, described rolling friction pair be by be separately positioned on slips support and be rotatably connected the cover fitting face the cross section be semicircle annular groove make-up and the rolling annular groove and the rolling annular groove in ball consist of.
The disclosed low-resistance reversing packer of the utility model technical scheme, coordinate for rolling friction between wherein be rotatably connected cover and slips support, greatly reduce in the setting operation of commutation and turn to damping, commutation is rotated more flexible, avoid the jam phenomenon, guaranteed simultaneously the reliability of commutation, and this structure also effectively reduces the possibility that impurity enters fitting face.
Description of drawings
Accompanying drawing is the cut-open view of final assembly of this low-resistance reversing packer.
The specific embodiment
low-resistance reversing packer of the present utility model, its structure consists of as shown in drawings, its composition comprises central tube 1, the outer centralizer 3 between two end joints of central tube, the reversing pin mechanism 2 of centralizer 3, , cover 4 is rotatably connected, slips assembly 5 and more piece packing element 6 consist of, wherein be provided with rolling friction pair in the slips support 15 of slips assembly 5 and cover 4 the face that is slidably matched that is rotatably connected, described rolling friction pair is made of the ball 8 in rolling annular groove 7 and rolling annular groove, in this enforcement structure, rolling annular groove 7 is all to be shaped with semicircle annular groove on the cover 4 fitting face correspondence positions that are rotatably connected of slips support 15, make-up consists of mutually, be provided with some balls in rolling annular groove 7, make slips support 15 and be rotatably connected cover 4 rolling cooperations.
Central tube 1 rotates in a circumferential direction in certain angle and process, the guide finger 13 of guide finger mechanism 2 enters in the long track of central tube 1, cause centralizer 3 to rotate, this moment, slips 16 still kept relative static with packing element 6, centralizer 3 namely produces axial compression to the slips 16 on central tube 1 and packing element 6, make slips 16 and packing element produce simultaneously radial dilatation, realize grappling.Slips support 15 and the rolling matching structure of cover between 4 that be rotatably connected make inter-agencyly to be rotatably assorted more flexibly, are easier to realize setting grappling operation.
Claims (2)
1. low-resistance reversing packer, its structure forms and comprises that the centralizer between central tube, central tube two end joints, the reversing pin mechanism of centralizer, the cover that is rotatably connected, slips assembly and more piece packing element consist of, and is provided with rolling friction pair in the slips support that it is characterized in that slips assembly wherein and the face that is slidably matched that overlaps that is rotatably connected.
2. low-resistance reversing packer according to claim 1 is characterized in that described rolling friction pair is by being separately positioned on slips support and the cross section of the cover fitting face that is rotatably connected is that semicircle annular groove make-up forms that in rolling annular groove and rolling annular groove, ball consists of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623166 CN202990954U (en) | 2012-11-22 | 2012-11-22 | Low damping reversing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623166 CN202990954U (en) | 2012-11-22 | 2012-11-22 | Low damping reversing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202990954U true CN202990954U (en) | 2013-06-12 |
Family
ID=48562145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220623166 Expired - Lifetime CN202990954U (en) | 2012-11-22 | 2012-11-22 | Low damping reversing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202990954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005728A (en) * | 2014-03-14 | 2014-08-27 | 大庆市慧灵石油科技有限公司 | Well sealer for controllable well |
-
2012
- 2012-11-22 CN CN 201220623166 patent/CN202990954U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005728A (en) * | 2014-03-14 | 2014-08-27 | 大庆市慧灵石油科技有限公司 | Well sealer for controllable well |
| CN104005728B (en) * | 2014-03-14 | 2016-06-22 | 大庆市慧灵石油科技有限公司 | A kind of controlled well blowout preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
|
| CX01 | Expiry of patent term |