CN203879447U - Expansion type one-way leakproof packer - Google Patents
Expansion type one-way leakproof packer Download PDFInfo
- Publication number
- CN203879447U CN203879447U CN201420260239.8U CN201420260239U CN203879447U CN 203879447 U CN203879447 U CN 203879447U CN 201420260239 U CN201420260239 U CN 201420260239U CN 203879447 U CN203879447 U CN 203879447U
- Authority
- CN
- China
- Prior art keywords
- way valve
- central tube
- floating head
- liquid outlet
- air supported
- 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 an expansion type one-way leakproof packer comprising a fastener a, a central pipe, a lower floating head, seal rings, an one-way valve a, a rubber cylinder, a liquid inlet, an upper floating head, a fastener b, an one-way valve b and a liquid outlet. The outer wall of the middle of the central pipe is provided with the rubber cylinder, two ends of the rubber cylinder are connected to the upper floating head and the lower floating head respectively, the seal rings are arranged between the upper floating head and the lower floating head and the central pipe, two ends of the central pipe are connected to the fastener a and the fastener b in screwed and matched manner, the connection of the central pipe and the rubber cylinder is provided with the liquid inlet provided with the one-way valve b inside, and the connection of the central pipe and the lower floating head is provided with the liquid outlet provided with the one-way valve a inside. During sealing, pipe post dropping is omitted, the pipe post is lifted during unsealing, the liquid inlet and the liquid outlet are separated and are provided with the one-way valves as designed, and the fine leakproof effect is achieved.
Description
Technical field:
The utility model relates to a kind of capping tools for oil well packing bottom oil reservoir water layer, particularly the unidirectional leakproof packer of a kind of expanding.
Background technology:
Now adopt inflatable packer K341 type, its principle is: this instrument is after projected depth, by surface pump, liquid is injected to the packer central tube being connected with tubing string, by liquid inlet/outlet, enter and in the annular space between central tube and packing element, make packing element radial dilatation simultaneously, outer glue-line is close to the borehole wall, reaches the object of packing well.When interior pressure reaches design load, the tubing string of transferring with pressure, blocks feed liquor duct, completes and sets.Because this packer has unilateral locking device, thereby after release, packer is deblocking voluntarily not also, to oil sets annular space fluid injection body, when hydraulic pressure reaches 0.5-1Mpa, anti-flushing well piston is opened, continue fluid injection body, realize anti-flushing well operation, upper lifting pipe post can make removing seal for packer.Now have problems: structure and defective workmanship that water injection string and packer self exists, in the injecting process, due to tubing string discontinuity and water conservancy impact, cause packer sealing not tight, do not reach the object of seperated layer water injection.
Summary of the invention:
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, has proposed the unidirectional leakproof packer of a kind of expanding.
Its technical scheme is: mainly comprise hoop a, central tube, lower air supported head, sealing ring, one way valve a, packing element, inlet, upper air supported head, hoop b, one way valve b and liquid outlet; Central tube middle part outer wall is provided with packing element, packing element two ends connect respectively air supported head, lower air supported head, between upper air supported head, lower air supported head and central tube, be provided with sealing ring, central tube two ends are connected with hoop a, hoop b by threaded engagement, central tube and packing element connecting portion arrange inlet, one way valve b is set in inlet, and central tube and lower air supported head connecting portion arrange liquid outlet, and one way valve a is set in liquid outlet.
The beneficial effects of the utility model are: while setting, do not need to transfer tubing string, and upper lifting pipe post during deblocking, inlet and liquid outlet be design separately, is designed with one way valve, the leakproofness having had in inlet and liquid outlet.
Accompanying drawing explanation:
Accompanying drawing 1 is this practical new construction schematic diagram;
In upper figure: air supported head, 9 hoop b, 10 one way valve b, 11 liquid outlets on 1 hoop a, 2 central tubes, 3 times air supported heads, 4 sealing rings, 5 one way valve a, 6 packing elements, 7 inlets, 8.
The specific embodiment:
By reference to the accompanying drawings 1, the utility model will be further described:
Technical solutions of the utility model are: mainly comprise hoop a (1), central tube (2), lower air supported head (3), sealing ring (4), one way valve a (5), packing element (6), inlet (7), upper air supported head (8), hoop b (9), one way valve b (10) and liquid outlet (11); central tube (2) middle part outer wall is provided with packing element (6), packing element (6) two ends connect respectively air supported head (8), lower air supported head (3), upper air supported head (8), between lower air supported head (3) and central tube (2), be provided with sealing ring (4), central tube (2) two ends are by threaded engagement and hoop a (1), hoop b (9) connects, central tube (2) arranges inlet (7) with packing element (6) connecting portion, one way valve b (10) is set in inlet (7), central tube (2) arranges liquid outlet (11) with lower air supported head (3) connecting portion, one way valve a (5) is set in liquid outlet (11).
During operation, by this instrument after projected depth, by surface pump, liquid is injected to the packer central tube (2) being connected with tubing string, liquid enters in the annular space between central tube (2) and packing element (6) by the one way valve (10) of inlet (7) simultaneously, make packing element (6) radial dilatation, outer glue-line is close to the borehole wall, completes and sets.
During deblocking, upper lifting pipe post, the one way valve (5) of liquid outlet (11) is opened, and liquid flows out, internal and external pressure balance, packing element (6) recovers reset condition, removing seal for packer.
The beneficial effects of the utility model are: while setting, do not need to transfer tubing string, and upper lifting pipe post during deblocking, inlet and liquid outlet be design separately, is designed with one way valve, the leakproofness having had in inlet and liquid outlet.
Claims (1)
1. the unidirectional leakproof packer of expanding, is characterized in that: mainly comprise hoop a (1), central tube (2), lower air supported head (3), sealing ring (4), one way valve a (5), packing element (6), inlet (7), upper air supported head (8), hoop b (9), one way valve b (10) and liquid outlet (11); central tube (2) middle part outer wall is provided with packing element (6), packing element (6) two ends connect respectively air supported head (8), lower air supported head (3), upper air supported head (8), between lower air supported head (3) and central tube (2), be provided with sealing ring (4), central tube (2) two ends are by threaded engagement and hoop a (1), hoop b (9) connects, central tube (2) arranges inlet (7) with packing element (6) connecting portion, one way valve b (10) is set in inlet (7), central tube (2) arranges liquid outlet (11) with lower air supported head (3) connecting portion, one way valve a (5) is set in liquid outlet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260239.8U CN203879447U (en) | 2014-05-21 | 2014-05-21 | Expansion type one-way leakproof packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260239.8U CN203879447U (en) | 2014-05-21 | 2014-05-21 | Expansion type one-way leakproof packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879447U true CN203879447U (en) | 2014-10-15 |
Family
ID=51679958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260239.8U Expired - Fee Related CN203879447U (en) | 2014-05-21 | 2014-05-21 | Expansion type one-way leakproof packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879447U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639964A (en) * | 2017-03-10 | 2017-05-10 | 西南石油大学 | High leakproofness shoulder-protrusion resistant compression type packer |
| CN114370257A (en) * | 2022-03-23 | 2022-04-19 | 中国石油大学(华东) | Sand control screen pipe for gas well of gas storage and sand control injection and production method |
-
2014
- 2014-05-21 CN CN201420260239.8U patent/CN203879447U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639964A (en) * | 2017-03-10 | 2017-05-10 | 西南石油大学 | High leakproofness shoulder-protrusion resistant compression type packer |
| CN114370257A (en) * | 2022-03-23 | 2022-04-19 | 中国石油大学(华东) | Sand control screen pipe for gas well of gas storage and sand control injection and production method |
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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: 20141015 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |