CN201857928U - Hydraulic expanding packer - Google Patents
Hydraulic expanding packer Download PDFInfo
- Publication number
- CN201857928U CN201857928U CN201020570038XU CN201020570038U CN201857928U CN 201857928 U CN201857928 U CN 201857928U CN 201020570038X U CN201020570038X U CN 201020570038XU CN 201020570038 U CN201020570038 U CN 201020570038U CN 201857928 U CN201857928 U CN 201857928U
- Authority
- CN
- China
- Prior art keywords
- packer
- central tube
- packing element
- expanding
- hydraulic
- 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
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a hydraulic expanding packer, which comprises a central tube as well as an upper joint and a lower joint which are threaded at the both ends of the central tube. The hydraulic expanding packer is characterized in that a through hole is arranged on the central tube; the periphery of the central tube is provided with an expanding rubber cylinder; and the both ends of the expanding rubber cylinder are respectively provided with a floating head, wherein the two floating heads are respectively clamped outside the both ends of the expanding rubber cylinder. Compared with the prior art, the hydraulic expanding packer has the advantages that: 1, the structure is simple, and the working is reliable; 2, the packer can bear high pressure and high temperature; 3, bidirectional pressure bearing is realized; 4, the packer is safe, and accidents are less; and 5, the application range is wide.
Description
Technical field
The utility model relates to a kind of packer, is specifically related to a kind of hydraulic expansion formula packer.
Background technology
At present, along with oil field development, number of processes such as oil field downhole card layer increase, and are also more and more higher to the requirement of packer, require high pressure resistant, the high temperature of packer, and simple to operate, the down-hole accident rate is low.The packer major part of now using does not satisfy requirement.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of hydraulic expansion formula packer is provided.This packer can not only bear high pressure, high temperature, can also bear two-way load.
Its technical scheme is: comprise central tube and the top connection, the lower contact that are threaded in its two ends, it is characterized in that: described central tube is provided with via hole, and its periphery is provided with the expansion packing element, and expansion packing element two ends are provided with air supported head.
Wherein, described air supported head is made as 2, is stuck in outside the two ends of expansion packing element.
The utility model has following advantage compared with prior art: 1, simple in structure, reliable operation; 2, bear high pressure, high temperature; 3, bidirectional bearing; 4, safety, accident are few; 5, it is wide to be easy to scope.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
The specific embodiment
With reference to Fig. 1, a kind of hydraulic expansion formula packer comprises central tube 4 and the top connection 1, the lower contact 5 that are threaded in its two ends, and described central tube 4 is provided with via hole 6, and its periphery is provided with expansion packing element 3, and expansion packing element 3 two ends are provided with air supported head 2.Wherein, described air supported head 2 is made as 2, is stuck in outside the two ends of expansion packing element 3.
During operation, set: tubing string generally adopts packer+injection well downhole flow regulator+end ball seat, when starting working, the liquid of oil pipe inside produces chock pressure difference at injection well downhole flow regulator, when when central tube 4 is suppressed 0.6-1.2MPa, hydraulic pressure is filtered seam 6 and is entered expansion packing element 3 inner chambers in central tube 4, force expansion packing element 3 to expand outwardly and be close to internal surface of sleeve pipe, the sealing oil sets annular space.Filter seam 6 is used for preventing that large granular impurity from entering expansion packing element 3 inner chambers and influencing the withdrawal of expanding packing element 3.Expansion packing element 3 adopts mold pressing high strength imported material packing element, bears high pressure high temperature, can expand repeatedly more than 100 times and not damage.Expansion packing element 3 assembly structures are designed to floating construction, can bear two-way load, and it is safe and reliable that card is sealed up lower floor, and pressure reduction is big more, sealing is tight more.Deblocking: the pressure in the central tube is laid down, and expansion packing element 3 is promptly regained deblocking.
Claims (2)
1. a hydraulic expansion formula packer comprises central tube and the top connection, the lower contact that are threaded in its two ends, and it is characterized in that: described central tube is provided with via hole, and its periphery is provided with the expansion packing element, and expansion packing element two ends are provided with air supported head.
2. hydraulic expansion formula packer according to claim 1, it is characterized in that: described air supported head is made as 2, is stuck in outside the two ends of expansion packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020570038XU CN201857928U (en) | 2010-10-21 | 2010-10-21 | Hydraulic expanding packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020570038XU CN201857928U (en) | 2010-10-21 | 2010-10-21 | Hydraulic expanding packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201857928U true CN201857928U (en) | 2011-06-08 |
Family
ID=44103738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020570038XU Expired - Fee Related CN201857928U (en) | 2010-10-21 | 2010-10-21 | Hydraulic expanding packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201857928U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563955A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Steel pipe hydraulic expansion type external casing packer |
| CN104749732A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | External casing packer armored optical cable penetration tool |
-
2010
- 2010-10-21 CN CN201020570038XU patent/CN201857928U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563955A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Steel pipe hydraulic expansion type external casing packer |
| CN104563955B (en) * | 2013-10-27 | 2017-02-15 | 中国石油化工集团公司 | Steel pipe hydraulic expansion type external casing packer |
| CN104749732A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | External casing packer armored optical cable penetration tool |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20111021 |