CN2856398Y - High pressure durable expanding packer - Google Patents
High pressure durable expanding packer Download PDFInfo
- Publication number
- CN2856398Y CN2856398Y CN 200520029623 CN200520029623U CN2856398Y CN 2856398 Y CN2856398 Y CN 2856398Y CN 200520029623 CN200520029623 CN 200520029623 CN 200520029623 U CN200520029623 U CN 200520029623U CN 2856398 Y CN2856398 Y CN 2856398Y
- Authority
- CN
- China
- Prior art keywords
- rubber tube
- threaded
- last
- seat
- sleeve
- 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
Abstract
The utility model relates to a high temperature resistant expanding type packer which belongs to the field of oil field downhole operation tool. The packer comprises a top joint, a bottom joint, a center pipe, a top, bottom rubber tube seat and an expanding rubber tube. A top, bottom liquid cylinder sleeve is connected to the top, bottom joint and the top, bottom rubber tube seat by screw connection; a top, bottom piston is positioned between the top, bottom liquid cylinder sleeve and the top, bottom rubber tube with sliding seal connection to each other ; the top, bottom piston sleeve is connected with the top, bottom rubber rube seat with inner side by sliding muff coupling and connected with the muff liquid cylinder sleeve with outer side by sliding coupling; the top, bottom compression rubber tube sleeve is installed on the outer side of the top, bottom rubber tube by muff coupling; a spacing ring is screwed with the rubber tube seat. The utility model utilizes the gap between compression rubber tube packer and the sleeve to restrain the extension of the extending rubber tube, protects the outer part of the extending tube, effectively prevents the well block trouble caused by rubber tube crush, improves the pressure resistance of rubber tube, expands the application range of crack operation, and improves the production efficiency of oil field.
Description
Technical field
The utility model relates to a kind of oil field underground work instrument.
Background technology
At present, the oil field is used for the packer that the underground fracture operation uses and mostly is inflatable packer, but owing to reasons such as packing element bearing capacity difference and casing deformations, make the operations involving high pressure of down-hole occur accidents such as the packing element pressure is quick-fried, Ka Jing again and again, cause very the large economy loss to the oil field, also have some adopt originally fracturing work with regard to fertile oil well also because these technical barriers and can't operation.
Summary of the invention
The utility model provides a kind of high voltage bearing inflatable packer, easily presses the problem of the quick-fried Ka Jing of causing to solve packing element that present inflatable packer exists.The technical scheme that the utility model is taked is: top connection 1 is threaded with central tube 9, this central tube other end is threaded with lower contact 10, expansion packing element 7 is socketed in the central tube outside, two ends are respectively with last, the lower rubber cylinder seat is threaded, last fluid cylinder cover 2 is threaded with top connection and glue tube base 5 respectively, following fluid cylinder cover 2 ' is threaded with lower contact and lower rubber cylinder seat 5 ' respectively, upper piston 3 is between last fluid cylinder cover and last glue tube base, and be connected with both slipper seals, lower piston 3 ' is down between fluid cylinder cover and the lower rubber cylinder seat, and be connected with both slipper seals, the 4 inner and last glue tube base 5 slip sockets of upper piston cover, outside and last fluid cylinder cover 2 is slidingly connected, 4 ' inner and lower rubber cylinder seat 5 ' the slip socket of lower piston cover, outside and following fluid cylinder cover 2 ' is slidingly connected, last compression packing element 6 is socketed in glue tube base 5 outsides, lower compression packing element 6 ' is socketed in lower rubber cylinder seat 5 ' outside, upper isolating ring 8 is threaded with last glue tube base 5, and lower isolating ring 8 ' is threaded with lower rubber cylinder seat 5 '.During use, upper and lower joint of the present utility model is connected on the tubing string, it down to the underground work position, is injected the band press liquid by ground then in oil pipe, liquid enters in the expansion packing element by hole on the central tube and finedraw, and the expansion packing element is expanded; Simultaneously liquid enters the space of piston between overlapping with fluid cylinder by the aperture on the upper and lower glue tube base; promoting piston and piston bush moves to compression packing element direction; behind the compression packing element pressurized; mid portion is stressed to be heaved; filled the space between packer and the sleeve pipe; thereby stopped that the expansion packing element outwards expands, and has effectively protected packing element.
Advantage of the present utility model is: novel structure; utilizing the space of compressing between packing element shutoff packer and the sleeve pipe to limit the expansion packing element expands outwardly; expansion packing element outside is protected; it is quick-fried that thereby protection expansion packing element is not expanded, and prevented from effectively to press the quick-fried card well accident that takes place because of packing element.Improve the withstand voltage properties of packing element, enlarged the scope of application of fracturing work, improved the production efficiency in oil field.
Description of drawings
Fig. 1, the utility model structural representation.
The specific embodiment
Top connection 1 is threaded with central tube 9, this central tube other end is threaded with lower contact 10, expansion packing element 7 is socketed in the central tube outside, two ends are respectively with last, the lower rubber cylinder seat is threaded, last fluid cylinder cover 2 is threaded with top connection and glue tube base 5 respectively, following fluid cylinder cover 2 ' is threaded with lower contact and lower rubber cylinder seat 5 ' respectively, upper piston 3 is between last fluid cylinder cover and last glue tube base, and be connected with both slipper seals, lower piston 3 ' is down between fluid cylinder cover and the lower rubber cylinder seat, and be connected with both slipper seals, the 4 inner and last glue tube base 5 slip sockets of upper piston cover, outside and last fluid cylinder cover 2 is slidingly connected, 4 ' inner and lower rubber cylinder seat 5 ' the slip socket of lower piston cover, outside and following fluid cylinder cover 2 ' is slidingly connected, last compression packing element 6 is socketed in glue tube base 5 outsides, lower compression packing element 6 ' is socketed in lower rubber cylinder seat 5 ' outside, upper isolating ring 8 is threaded with last glue tube base 5, and lower isolating ring 8 ' is threaded with lower rubber cylinder seat 5 '.
Claims (1)
1, a kind of high voltage bearing inflatable packer, top connection (1) is threaded with central tube (9), this central tube other end is threaded with lower contact (10), expansion packing element (7) is socketed in the central tube outside, two ends are respectively with last, the lower rubber cylinder seat is threaded, it is characterized in that: go up fluid cylinder cover (2) and be threaded with top connection and glue tube base (5) respectively, following fluid cylinder cover (2 ') is threaded with lower contact and lower rubber cylinder seat (5 ') respectively, upper piston (3) is between last fluid cylinder cover and last glue tube base, and be connected with both slipper seals, lower piston (3 ') is down between fluid cylinder cover and the lower rubber cylinder seat, and be connected with both slipper seals, inner and last glue tube base (5) the slip socket of upper piston cover (4), outside and last fluid cylinder cover (2) is slidingly connected, inner and lower rubber cylinder seat (5 ') the slip socket of lower piston cover (4 '), outside and following fluid cylinder cover (2 ') is slidingly connected, last compression packing element (6) is socketed in glue tube base (5) outside, lower compression packing element (6 ') is socketed in lower rubber cylinder seat (5 ') outside, upper isolating ring (8) is threaded with last glue tube base (5), and lower isolating ring (8 ') is threaded with lower rubber cylinder seat (5 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520029623 CN2856398Y (en) | 2005-12-28 | 2005-12-28 | High pressure durable expanding packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520029623 CN2856398Y (en) | 2005-12-28 | 2005-12-28 | High pressure durable expanding packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2856398Y true CN2856398Y (en) | 2007-01-10 |
Family
ID=37599705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520029623 Expired - Fee Related CN2856398Y (en) | 2005-12-28 | 2005-12-28 | High pressure durable expanding packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2856398Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401909A (en) * | 2014-08-21 | 2016-03-16 | 中国石油天然气股份有限公司 | Expandable packer and setting method thereof |
-
2005
- 2005-12-28 CN CN 200520029623 patent/CN2856398Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401909A (en) * | 2014-08-21 | 2016-03-16 | 中国石油天然气股份有限公司 | Expandable packer and setting method thereof |
| CN105401909B (en) * | 2014-08-21 | 2018-04-03 | 中国石油天然气股份有限公司 | Inflatable packer and its set method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |