CN204716186U - A kind of combined type gradually deblocking packer - Google Patents
A kind of combined type gradually deblocking packer Download PDFInfo
- Publication number
- CN204716186U CN204716186U CN201520378797.9U CN201520378797U CN204716186U CN 204716186 U CN204716186 U CN 204716186U CN 201520378797 U CN201520378797 U CN 201520378797U CN 204716186 U CN204716186 U CN 204716186U
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- CN
- China
- Prior art keywords
- deblocking
- packer
- decapsulator
- type gradually
- central tube
- 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.)
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Abstract
A kind of combined type gradually deblocking packer that can realize multiple series connection packer gradually deblocking.It comprises packer and decapsulator, and described decapsulator comprises top connection, deblocking pin, control piston, lock dog, central tube, lower contact, and wherein said central tube upper and lower part connects described top connection, described lower contact respectively; Described control piston is placed in the cavity of outer tube and the formation of described central tube, and be connected with outer tube by described deblocking pin, upper end is with described lock dog.Described packer is the conventional packer not with deblocking pin being put forward envelope.Described decapsulator is be provided with the fluid pressure type gradually deblocking device separating sealing mechanism.This combined type gradually deblocking packer connects a fluid pressure type gradually deblocking device between packer makes packer whole string deblocking become single gradually deblocking, thus force way when changing packing deblocking, multiple packer is connected use, substantially reduce deblocking load, safe and reliable, can use in a large number in oilfield water extraction field.
Description
Art
The utility model relates to the packer that in a kind of field of oil field oil extraction, well is used, is specifically related to a kind of combined type gradually deblocking packer, belongs to oil extraction in oil field engineering field.
Background technology
Along with going deep into of oil field development, the segmentation degree of water injection well continues to increase, water filling layer gets more and more, enter progression under packing to increase, during due to dirt card and conventional removing seal for packer, central tube entirety is stressed thereupon, deblocking load constantly increases reason, pull out the phenomenon that " pulling out motionless " easily appears in packer during operation, add job execution difficulty and operating cost, have impact on injection effect.
Summary of the invention
For above problem, utility model provides a kind of novel packer--and combined type gradually deblocking packer, its objective is and realize multiple packer gradually deblocking so that series connection uses, thus reduce deblocking load, ensure carrying out smoothly of job execution.
The utility model solves the technical scheme that its technical problem adopts: a kind of combined type gradually deblocking packer, comprises packer and decapsulator; Described decapsulator comprises top connection, deblocking pin, control piston, lock dog, central tube, lower contact, and wherein said central tube upper and lower part connects described top connection, described lower contact respectively; Described control piston is placed in the cavity of outer tube and the formation of described central tube, and be connected with outer tube by described deblocking pin, upper end is with described lock dog.
Further, described packer is the conventional packer not with deblocking pin being put forward envelope.
Further, described decapsulator is be provided with the fluid pressure type gradually deblocking device separating sealing mechanism.
Helpfulness of the present utility model is: between packer, connect a fluid pressure type gradually deblocking device make packer whole string deblocking become single gradually deblocking, thus force way when changing packing deblocking, multiple packer is connected use, substantially reduce deblocking load, ensure carrying out smoothly of job execution.This combined type gradually deblocking packer uses through the many wells of laboratory test and scene and shows to have gradually deblocking function, and structure is simple, easy for installation, safe and reliable, can use in a large number in oilfield water extraction field.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
1. packers, 2. top connection in figure, 3. deblocking pin, 4. control piston, 5. lock dog, 6. central tube, 7. lower contact.
Detailed description of the invention
Participate in Fig. 1, a kind of combined type gradually deblocking packer, comprises packer (1) and decapsulator; Described decapsulator comprises top connection (2), deblocking pin (3), control piston (4), lock dog (5), central tube (6), lower contact (7), and wherein said central tube (6) upper and lower part connects described top connection (2), described lower contact (7) respectively; Described control piston (4) is placed in the cavity that outer tube and described central tube (6) formed, and be connected with outer tube by described deblocking pin (3), upper end is with described lock dog (5).
Described packer (1) is the conventional packer not with deblocking pin being put forward envelope.
Described decapsulator is be provided with the fluid pressure type gradually deblocking device separating sealing mechanism.
First gradually deblocking device is installed on packer (1) lower end, and thereupon in lower going-into-well.During normal water filling, tubing pressure withstands control piston (4), and control piston (4) withstands lock dog (5) and is stuck in locked groove and cannot discharges, and enhances top connection (2) and the coupling force of central tube (6), ensure that carrying decapsulator is with the reliability of lower tubular column load.
When tubing string needs deblocking, first by well-flushing, well-flushing pressure pushes control piston (4) open, release lock dog (5), relieves the coupling force of top connection (2) and central tube (6) support place; Upper lifting pipe post again, cuts off the deblocking pin (3) of gradually deblocking device, and top connection (2) stretches with central tube (6) and is separated, and achieves gradually deblocking process.
Claims (3)
1. a combined type gradually deblocking packer, comprise packer and decapsulator, it is characterized in that described decapsulator comprises top connection, deblocking pin, control piston, lock dog, central tube, lower contact, wherein said central tube upper and lower part connects described top connection, described lower contact respectively; Described control piston is placed in the cavity of outer tube and the formation of described central tube, and be connected with outer tube by described deblocking pin, upper end is with described lock dog.
2. combined type gradually deblocking packer according to claim 1, is characterized in that described packer is the conventional packer not with deblocking pin being put forward envelope.
3. combined type gradually deblocking packer according to claim 1, is characterized in that described decapsulator is be provided with the fluid pressure type gradually deblocking device separating sealing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520378797.9U CN204716186U (en) | 2015-06-04 | 2015-06-04 | A kind of combined type gradually deblocking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520378797.9U CN204716186U (en) | 2015-06-04 | 2015-06-04 | A kind of combined type gradually deblocking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716186U true CN204716186U (en) | 2015-10-21 |
Family
ID=54315190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520378797.9U Expired - Fee Related CN204716186U (en) | 2015-06-04 | 2015-06-04 | A kind of combined type gradually deblocking packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716186U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058793A (en) * | 2018-10-16 | 2020-04-24 | 中国石油化工股份有限公司 | Gradual unsealing device |
-
2015
- 2015-06-04 CN CN201520378797.9U patent/CN204716186U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058793A (en) * | 2018-10-16 | 2020-04-24 | 中国石油化工股份有限公司 | Gradual unsealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160816 Address after: 100055, room 2, building 23, 1804 Binhe Road, Xicheng District, Beijing Patentee after: Beijing JOYOU ten thousand Technology Co., Ltd. Address before: 100032 Building 2, No. 23, Binhe Road, Xicheng District, Beijing, 1804 Patentee before: Du Haibin Patentee before: Yuan Zhimin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20200604 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |