CN2720106Y - Stepped-depacking packer - Google Patents
Stepped-depacking packer Download PDFInfo
- Publication number
- CN2720106Y CN2720106Y CN 200420070305 CN200420070305U CN2720106Y CN 2720106 Y CN2720106 Y CN 2720106Y CN 200420070305 CN200420070305 CN 200420070305 CN 200420070305 U CN200420070305 U CN 200420070305U CN 2720106 Y CN2720106 Y CN 2720106Y
- Authority
- CN
- China
- Prior art keywords
- unsealing
- packer
- glue tube
- pin
- tube axis
- 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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- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The utility model belongs to a packer for oil field and discloses a technique of stepped-unsealing packer. An upper contact 1 is connected with a glue tube axis 5 through an unsealing pin 4. The outer part of the glue tube axis 5 is connected with a glue tube 6 and a piston 7, and the lower part of the glue tube axis is connected with a lower contact 10 of an upper thread groove. The outside middle part of the glue tube axis is attached with a locking mechanism 8, and the lower part is connected with the piston 7 through a sitting seal pin 9, and the inside seal of the glue tube axis is connected with the upper contact 1. The upper contact 1 and the glue tube axis 5 form a balancing chamber 3 which communicates with a balancing liquid inlet hole 2. The packer can be divided into an upper part and a lower part, and these two parts are connected through the unsealing pin. When the seal is unsealed, the upper part moves up to break the unsealing pin. When the unsealing is finished, the lower part is hang-connected. The utility model can achieve classily unsealing, and the sitting seal pressure is 20MPa, and the operating differential pressure is <=35MPa and the unsealing load is 40-80k. The stepped-unsealing packer is suitable to the oil field and oil well plugging and producing operation and the layered injecting water operation for water injection well.
Description
Affiliated technical field the utility model belongs to petroleum machinery, the classification deblocking packer of particularly a kind of water blockoff, water injection technology.
Background technology is present, the employed no support hydraulic pressure set packer in oil vapour field, top connection and lower contact link into an integrated entity, during multistage use, synchronous deblocking during deblocking, deblocking power are that the deblocking power of single-stage packer multiply by packer quantity, and deblocking power is quite big, the deblocking difficulty serious causes overhaul.
The summary of the invention the purpose of this utility model is to overcome above technical deficiency, when a kind of deblocking is provided from top to bottom, the classification deblocking, deblocking is easy, the classification deblocking packer of reliable operation.
Task of the present utility model is, the top connection of classification deblocking packer connects the packing element axle by the deblocking pin, external packing element of packing element axle and piston, the lower end connects the lower contact of upper end screw thread fluting, outer middle side part articulates locking mechanism, the lower end connects piston by setting pin, the inner seal top connection of joining, and top connection communicates with the balance inlet opening with the counter balance pocket of packing element axle formation.
The utlity model has following characteristics: one, the classification deblocking packer is divided into upper and lower two parts, relies on the deblocking pin to connect, and moves on the top during deblocking, breaks the deblocking pin, and separating is honored as a queen articulates the lower part, realizes the classification deblocking, and deblocking is reliable; Its two, the top connection of classification deblocking packer and packing element axle form counter balance pocket, the deblocking pin does not stress during packer setting, sets reliable.
Description of drawings specifies with embodiment below in conjunction with accompanying drawing.
Fig. 1 shows classification deblocking packer structure chart.
Among Fig. 1, the 1-top connection; 2-balance inlet opening; The 3-counter balance pocket; 4-deblocking pin; 5-packing element axle; The 6-packing element; The 7-piston; The 8-locking mechanism; 9-sets pin; The 10-lower contact
The specific embodiment is with reference to accompanying drawing 1, the top connection 1 of classification deblocking packer connects packing element axle 5 by the deblocking pin, packing element axle 5 external packing element 6 and pistons 7, the lower end connects and to have locking mechanism 8 and piston 7 by setting the lower contact 10 that upper end screw thread that pin 9 is connected is slotted, high pressure liquid stream acts on piston 7 when setting, cut off that to set pin 9 up, compression packing element 6 envelope that expands, the overbalance of liquid circulation simultaneously inlet opening 2 enters counter balance pocket 3, deblocking pin 4 does not stress, locking mechanism is finished locking simultaneously, finishes setting, during deblocking, on put on joint 1, break on the deblocking pin 4 and move, lower contact 10 positions are motionless, and the screw thread of upper end fluting loses support, separate with packing element axle 5, the packer deblocking, top connection 1 articulates packing element axle 5 successively, piston 7, move in the lower contact 10, carry out next stage packer deblocking.
The technical performance parameter
Set pressure 20MPa;
Operting differential pressure≤35MPa;
Deblocking load 40-80kN.
The classification deblocking packer is applicable to oilfield water blockoff oil producing operation and water injection well seperated layer water injection operation.
Claims (2)
1. classification deblocking packer, it is characterized in that top connection (1) connects packing element axle (5) by deblocking pin (4), external packing element of packing element axle (5) (6) and piston (7), the lower end connects the lower contact (10) of upper end screw thread fluting, outer middle side part articulates locking mechanism (8), the lower end connects piston (7) by setting pin (9), the inner seal top connection (1) of joining.
2. according to the described classification deblocking packer of claim 1, it is characterized in that top connection (1) communicates with balance inlet opening (2) with the counter balance pocket (3) that packing element axle (5) constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070305 CN2720106Y (en) | 2004-08-13 | 2004-08-13 | Stepped-depacking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070305 CN2720106Y (en) | 2004-08-13 | 2004-08-13 | Stepped-depacking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2720106Y true CN2720106Y (en) | 2005-08-24 |
Family
ID=35009067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070305 Expired - Lifetime CN2720106Y (en) | 2004-08-13 | 2004-08-13 | Stepped-depacking packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2720106Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769139B (en) * | 2008-12-30 | 2012-11-28 | 杨东城 | Compressed self-sealed well-flushing packer |
| CN107842338A (en) * | 2016-09-18 | 2018-03-27 | 中国石油化工股份有限公司 | Expanded graphite thermal expansion packer |
| CN110905438A (en) * | 2020-01-14 | 2020-03-24 | 铁岭曲氏石油技术开发服务有限公司 | Forced unsetting packer and control method thereof |
-
2004
- 2004-08-13 CN CN 200420070305 patent/CN2720106Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769139B (en) * | 2008-12-30 | 2012-11-28 | 杨东城 | Compressed self-sealed well-flushing packer |
| CN107842338A (en) * | 2016-09-18 | 2018-03-27 | 中国石油化工股份有限公司 | Expanded graphite thermal expansion packer |
| CN110905438A (en) * | 2020-01-14 | 2020-03-24 | 铁岭曲氏石油技术开发服务有限公司 | Forced unsetting packer and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140813 Granted publication date: 20050824 |