CN201443352U - Anchoring expansion packer - Google Patents
Anchoring expansion packer Download PDFInfo
- Publication number
- CN201443352U CN201443352U CN2009200278346U CN200920027834U CN201443352U CN 201443352 U CN201443352 U CN 201443352U CN 2009200278346 U CN2009200278346 U CN 2009200278346U CN 200920027834 U CN200920027834 U CN 200920027834U CN 201443352 U CN201443352 U CN 201443352U
- Authority
- CN
- China
- Prior art keywords
- rubber cylinder
- sheath
- packing element
- jacket
- lower portion
- 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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- Piles And Underground Anchors (AREA)
Abstract
Disclosed is an anchoring expansion packer which comprises an upper connector, an upper sheath, an inner pipe, a rubber cylinder, a lower sheath and a lower connector, wherein small threads on the lower portion of the upper connector are connected with the upper portion of the inner pipe, the lower portion of the inner pipe is connected to the upper portion of the lower connector, large threads on the lower portion of the upper connector are connected with the upper portion of the upper sheath, the rubber cylinder is positioned outside the inner pipe, the small diameter section on the upper portion of the rubber cylinder is sleeved inside the upper sheath, the small diameter section on the lower portion of the rubber cylinder is sleeved inside the lower sheath, the lower portion of the lower sheath is positioned on the lower connector, a screen cut is arranged on the inner pipe, a strip body is milled on the lower portion of the upper sheath wrapping the rubber cylinder, and a cog is arranged on the strip body. The strip body milled on the lower portion of the upper sheath expands while the rubber cylinder expands, the strip body is anchored on a sleeve under the action of the cog, and the rubber cylinder expands on the sleeve to seal an annular space of an oil sleeve. Accordingly, the packer is capable of anchoring a water injection pipe column, preventing the pipe column from wriggling, avoiding shearing and damaging the rubber cylinder, improving the service life of the packer and having remarkable economic benefits.
Description
One, technical field
The utility model is the packer that separated-zone water infection oil field is used, and is a kind of anchoring expansion type packer.
Two, background technology
The inflatable packer that oil-field flooding is used is that packing element expands outwardly when the packing element internal pressure is higher than the packing element external pressure, realizes the purpose of sealing oil casing annular space.Present inflatable packer can not be anticreep.When water injection well stopped for some reason to annotate and recovers water filling, water injection string can extend and shorten, and promptly tubing string produces wriggling.When tubing string produces wriggling, because packing element do not regain, and produces friction between the sleeve pipe, make packing element shear failure, packer can not Sealed casing pipe during water filling, does not reach the purpose of seperated layer water injection.
Three, summary of the invention
The purpose of this utility model provides a kind of anchoring expansion type packer, can carry out grappling to water injection string, can prevent that tubing string from producing wriggling, improves the application life of packer.
The purpose of this utility model is achieved in that by top connection, upper jacket, interior pipe, packing element, lower jacket, lower contact to be formed, top connection bottom minor thread is connected with interior pipe top, interior pipe bottom is connected with lower contact top, top connection bottom major thread is connected with upper jacket top, packing element is in outside the interior pipe, packing element top reduced diameter section is sleeved in the upper jacket, packing element bottom reduced diameter section is sleeved in the lower jacket, the lower jacket bottom is in the lower contact, the sieve seam is arranged on the interior pipe, the upper jacket bottom that encases packing element is milled and is split into the bar body, on the bar body teeth is arranged.
Lower jacket is sleeved on outside the lower contact top, between lower jacket and the lower contact lower seal is installed.
Top connection and upper jacket connection of thread are installed sealing ring.
The beneficial effects of the utility model are: the upper jacket bottom that encases packing element is milled and is split into the bar body, on the bar body teeth are arranged, the bar body expansion that mill out the upper jacket bottom during packing element expansion is anchored on it on sleeve pipe under the teeth effect, and this moment, packing element was also expanded at sleeve pipe by sealing up oil casing annular space, therefore, the utility model can carry out grappling to water injection string, can prevent that tubing string from producing wriggling, and packing element shear failure can not take place, can improve the application life of packer, have remarkable economic efficiency.
Four, description of drawings
Accompanying drawing is a structure assembling drawing of the present utility model.
Five, the specific embodiment
Form by top connection 1, last sealing ring 2, upper jacket 3, interior pipe 5, packing element 6, lower jacket 7, lower contact 8, top connection 1 bottom minor thread is connected with interior pipe 5 tops, interior pipe 5 bottoms are connected with lower contact 9 tops, top connection 1 bottom major thread is connected with upper jacket 3 tops, manage outside 5 in packing element 6 is in, packing element 6 top reduced diameter sections are sleeved in the upper jacket 3, packing element 6 bottom reduced diameter sections are sleeved in the lower jacket 7, lower jacket 7 is sleeved on outside lower contact 9 tops, sieve seam 10 is arranged on the interior pipe 5, upper jacket 3 bottoms that encase packing element 6 are milled and are split into bar body 4, on the bar body 4 teeth are arranged.Lower seal 8 is installed between lower jacket 7 and the lower contact 9.Top connection 1 is installed sealing ring 2 with upper jacket 3 connection of thread.
During water filling, injecting the sieve seam 10 of water on interior pipe 5 directly goes in the packing element 6, under differential pressure action, make its expansion tightly be posted on the internal surface of sleeve pipe, thereby sealing oil casing annular space, making upper jacket 3 bottoms that encase packing element 6 mill the bar body 4 that is split into during packing element 6 expansions also expands, under the teeth effect, it is anchored on the sleeve pipe, can not wriggles thereby water injection string is anchored.
Claims (3)
1. anchoring expansion type packer, by top connection (1), upper jacket (3), interior pipe (5), packing element (6), lower jacket (7), lower contact (9) is formed, top connection (1) bottom minor thread is connected with interior pipe (5) top, interior pipe (5) bottom is connected with lower contact (9) top, top connection (1) bottom major thread is connected with upper jacket (3) top, packing element (6) is in outside the interior pipe (5), packing element (6) top reduced diameter section is sleeved in the upper jacket (3), packing element (6) bottom reduced diameter section is sleeved in the lower jacket (7), lower jacket (7) bottom is in the lower contact (9), sieve seam (10) is arranged on the interior pipe (5), it is characterized in that: upper jacket (3) bottom that encases packing element (6) is milled and is split into bar body (4), and the bar body has teeth on (4).
2. anchoring expansion type packer according to claim 1 is characterized in that: lower jacket (7) is sleeved on outside lower contact (9) top, between lower jacket (7) and the lower contact (9) lower seal (8) is installed.
3. anchoring expansion type packer according to claim 1 is characterized in that: top connection (1) is installed sealing ring (2) with upper jacket (3) connection of thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200278346U CN201443352U (en) | 2009-06-15 | 2009-06-15 | Anchoring expansion packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200278346U CN201443352U (en) | 2009-06-15 | 2009-06-15 | Anchoring expansion packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443352U true CN201443352U (en) | 2010-04-28 |
Family
ID=42548028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200278346U Expired - Lifetime CN201443352U (en) | 2009-06-15 | 2009-06-15 | Anchoring expansion packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443352U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586455B (en) * | 2009-06-15 | 2012-10-10 | 东营市兆鑫工贸有限责任公司 | Anchoring expansion type packer |
| CN103015943A (en) * | 2011-09-26 | 2013-04-03 | 王桂录 | Metal sealing mechanism for packer |
-
2009
- 2009-06-15 CN CN2009200278346U patent/CN201443352U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586455B (en) * | 2009-06-15 | 2012-10-10 | 东营市兆鑫工贸有限责任公司 | Anchoring expansion type packer |
| CN103015943A (en) * | 2011-09-26 | 2013-04-03 | 王桂录 | Metal sealing mechanism for packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100428 Effective date of abandoning: 20090615 |
|
| RGAV | Abandon patent right to avoid regrant |