CN202280444U - Layered steam injection packer - Google Patents
Layered steam injection packer Download PDFInfo
- Publication number
- CN202280444U CN202280444U CN 201120408893 CN201120408893U CN202280444U CN 202280444 U CN202280444 U CN 202280444U CN 201120408893 CN201120408893 CN 201120408893 CN 201120408893 U CN201120408893 U CN 201120408893U CN 202280444 U CN202280444 U CN 202280444U
- Authority
- CN
- China
- Prior art keywords
- packer
- central pipe
- central tube
- steam injection
- fluid cylinder
- 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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Abstract
The utility model discloses a layered steam injection packer, which structurally includes a central pipe, as well as an upper joint and a lower joint that are sleeved at the upper and the lower ends of the central pipe through threads, wherein a rubber cylinder and a hydraulic cylinder sleeve are sleeved between the upper and the lower joints on the central pipe; a hydraulic cylinder is formed between the hydraulic cylinder sleeve and the central pipe; a small hole leading to the hydraulic cylinder and allowing hydraulic oil to flow into and out is formed in the central pipe; and a lower locking structure is also arranged on the central pipe between the rubber cylinder and the hydraulic cylinder. According to the utility model, the packer can prevent injected steam from leaking to the annular space during the operation, and effectively seal and separate the space mainly through additionally arranging a sealing structure, so as to improve the spacing and steam injection effects, and accurately measure the injection steam quantity; the structure of the packer is optimized and improved, the structure is simpler and more practical; and the additionally arranged sealing structure improves the leak tightness of the packer.
Description
Technical field
The utility model relates to packer, specifically a kind of oil gas field layer steam injection packer.
Background technology
In the oil development at present; The layer steam injection process pipe string is often because conventional packer project organization unreasonable; The steam leakage takes place in seal member imperfection easily in steam injection process, get into annular space; Cause the laminated distributor under well steam injection string to separate problems such as effect is bad, the metering of layer steam injection is inaccurate, thereby the vapour effect is annotated in influence.
Summary of the invention
The purpose of the utility model is the defective that exists to prior art, and the layer steam injection packer is provided.Solved the problem of not sealing down on the packer packing in the prior art, have high temperature resistant, characteristics such as packing property is good.
The utility model solves the technical scheme that its technical problem adopted: layer steam injection packer, its structure centre pipe and through top connection and the lower contact of thread bush at the central tube upper and lower side; Also be socketed with packing element and fluid cylinder cover between top connection on the said central tube and the lower contact, form fluid cylinder between said fluid cylinder cover and the central tube, offer on the central tube and lead to the aperture that fluid cylinder is used for hydraulic oil discrepancy; Also be provided with down latch-up structure between said packing element and the fluid cylinder on the central tube.
Also be provided with lock tube between said top connection and the packing element on the central tube, this lock tube set inside has distinguish slips and lock pawl.
Be provided with joint ring between said fluid cylinder and following latch-up structure, the central tube.
The layer steam injection packer of the utility model is compared with prior art, has following beneficial effect:
The utility model can prevent that steam in jection is bled into annular space when making packer work, effectively the packing space mainly through increasing hermetically-sealed construction.Annotate the vapour effect thereby improve packing, accurately the vapour amount is annotated in metering.Packer construction has been carried out optimizing improvement, and structure is more simple and practical; Increase hermetically-sealed construction, strengthened packer sealing property.
Description of drawings
Accompanying drawing is the structural representation of the layer steam injection packer of the utility model.
Among the figure: 1-top connection; 2-lock pawl; 3-packing element; 4-following latch-up structure; 5-fluid cylinder; 6-lower contact.
The specific embodiment
Next explanation at length below with reference to Figure of description the layer steam injection packer of the utility model being done.
The layer steam injection packer, its structure centre pipe and through thread bush in top connection of central tube upper and lower side 1 and lower contact 6; Also be socketed with packing element 3 and fluid cylinder cover between top connection on the said central tube and the lower contact, form fluid cylinder 5 between said fluid cylinder cover and the central tube, offer on the central tube and lead to the aperture that fluid cylinder is used for hydraulic oil discrepancy; Also be provided with down latch-up structure 4 between said packing element and the fluid cylinder on the central tube.Also be provided with lock tube between said top connection and the packing element on the central tube, this lock tube set inside has distinguish slips and lock pawl 2.Be provided with joint ring between said fluid cylinder and following latch-up structure, the central tube.
1, sets, when job execution, this packer is serially connected with on the insulated tubing; And together go into well by designing requirement together with well tool under other and put in place, seated well head is opened sleeve gate; In oil pipe, add hydraulic pressure; Highly pressurised liquid gets into fluid cylinder through the aperture on the central tube, promotes lock tube, joint ring is up, the compression packing element.Meanwhile, the locking of lock tube and distinguish slips makes the packing element can't resilience.
2, deblocking during deblocking, is carried tubing string to certain altitude in the elder generation, and under packing element and the effect of casing wall frictional force, urceolus, packing element, lock tube keep motionless, move on the central tube, cut off pin, the inefficacy of lock pawl, and center moves down thereupon, realizes the packer deblocking.
The above embodiment is a kind of of the more preferably concrete embodiment of the utility model, and common variation that those skilled in the art carries out in the utility model technical scheme scope and replacement all should be included in the protection domain of the utility model.
Claims (3)
1. layer steam injection packer, its structure centre pipe and through top connection and the lower contact of thread bush at the central tube upper and lower side; It is characterized in that: also be socketed with packing element and fluid cylinder cover between top connection on the said central tube and the lower contact, form fluid cylinder between said fluid cylinder cover and the central tube, offer on the central tube and lead to the aperture that fluid cylinder is used for hydraulic oil discrepancy; Also be provided with down latch-up structure between said packing element and the fluid cylinder on the central tube.
2. layer steam injection packer according to claim 1 is characterized in that: also be provided with lock tube between said top connection and the packing element on the central tube, this lock tube set inside has distinguish slips and lock pawl.
3. layer steam injection packer according to claim 1 is characterized in that: be provided with joint ring between said fluid cylinder and following latch-up structure, the central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120408893 CN202280444U (en) | 2011-10-25 | 2011-10-25 | Layered steam injection packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120408893 CN202280444U (en) | 2011-10-25 | 2011-10-25 | Layered steam injection packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280444U true CN202280444U (en) | 2012-06-20 |
Family
ID=46226617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120408893 Expired - Fee Related CN202280444U (en) | 2011-10-25 | 2011-10-25 | Layered steam injection packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225490A (en) * | 2013-04-11 | 2013-07-31 | 中国石油天然气股份有限公司 | Small-diameter dual-seal layered steam injection packer |
-
2011
- 2011-10-25 CN CN 201120408893 patent/CN202280444U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225490A (en) * | 2013-04-11 | 2013-07-31 | 中国石油天然气股份有限公司 | Small-diameter dual-seal layered steam injection packer |
| CN103225490B (en) * | 2013-04-11 | 2015-08-05 | 中国石油天然气股份有限公司 | Minor diameter double containment Delaminated steam injecting packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20161025 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |