CN201050341Y - Double safety casing inclined guiding check valve - Google Patents
Double safety casing inclined guiding check valve Download PDFInfo
- Publication number
- CN201050341Y CN201050341Y CNU2007200938737U CN200720093873U CN201050341Y CN 201050341 Y CN201050341 Y CN 201050341Y CN U2007200938737 U CNU2007200938737 U CN U2007200938737U CN 200720093873 U CN200720093873 U CN 200720093873U CN 201050341 Y CN201050341 Y CN 201050341Y
- Authority
- CN
- China
- Prior art keywords
- turnover panel
- guiding axle
- guide
- axis
- check valve
- 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 relates to a double insurance casing ramp check valve belonging to a underground check valve of oil fields. The body and a flap tray are in threaded connection, and an overturn board is connected to the flap tray through a flap spring. The ramp and the body are in threaded connection, so are a ball sealer seat and the body, a guiding axle perigone and the body. The guiding axle is connected to a sealed hemisphere, and a pressure spring is jacketed on the outside of the guiding axle. The guiding axle is in cross-under with the guiding axle perigone. The sealed hemisphere and the ball sealer seat are in contact connection. The utility model has the advantages of an innovative structure, a double-sealed structure adopted and excellent air-tightness, so that the cementing quality can be ensured and the high cement plug and other underground accidents can be prevented. Therefore, the normal oil production work can be guaranteed.
Description
Technical field
The utility model belongs to down-hole, a kind of oil field flap valve.
Background technology
At present, prevent one-board and single ball check valve that cement paste flow backwards to use in the reinforcing oil well process, mine water contains silt particle and foreign material hinder sealing effectiveness sometimes, makes that cement paste is counter goes in the sleeve pipe, reduces cementing quality, is prone to down-hole accidents such as cement plug height.
Summary of the invention
The utility model provides a kind of dual fail-safe sleeve pipe to draw oblique flap valve, to solve the problem of present one-board and single ball check valve sealing effectiveness difference.The technical scheme that the utility model is taked is: main body 1 is threaded with turnover panel pallet 7, turnover panel 9 is connected with the turnover panel pallet by turnover panel spring 10, drawing oblique 11 is threaded with main body, this has hydrophthalmia 12 on drawing tiltedly, sealing ring 8 is fixedlyed connected with the turnover panel pallet, it is characterized in that: sealed ball seat 2 is threaded with main body, axis of guide perigone 5 is threaded with main body, the axis of guide 6 is connected with sealing hemisphere 3, compression spring 4 is socketed in axis of guide outside, this axis of guide and this axis of guide perigone cross-under, sealing hemisphere is connected with the sealed ball seat contact.During use, last main body splicing sleeve tail pipe, setting of casing midway turn on pump circulation time flap valve turnover panel and the sealing hemizonid be in full-gear, during termination of pumping, turnover panel and sealing hemisphere are in closed state under the effect of back-pressure and spring, if turnover panel is owing to advance down cement bonded sand or other foreign material hinder when poorly sealed, the sealing hemisphere of main cavity inside also can normally be closed, cement paste can not be counter be gone in the sleeve pipe, draw tiltedly and when the well cementation setting of casing, play guide effect, guarantee that setting of casing is smooth and easy.
The utility model advantage is novel structure, adopts double-layer sealing structure, and good seal performance can guarantee cementing quality, prevents down-hole accidents such as cement plug height, thereby ensures normally carrying out of oil extraction operation.
Description of drawings
Accompanying drawing is the utility model structural representation.
The specific embodiment
Main body 1 is threaded with turnover panel pallet 7, turnover panel 9 is connected with the turnover panel pallet by turnover panel spring 10, draw oblique 11 and be threaded with main body, this has hydrophthalmia 12 on drawing tiltedly, and sealing ring 8 is fixedlyed connected with the turnover panel pallet, sealed ball seat 2 is threaded with main body, axis of guide perigone 5 is threaded with main body, and the axis of guide 6 is connected with sealing hemisphere 3, and compression spring 4 is socketed in axis of guide outside, this axis of guide and this axis of guide perigone cross-under, sealing hemisphere is connected with the sealed ball seat contact.
Claims (1)
1. a dual fail-safe sleeve pipe draws oblique flap valve, main body (1) is threaded with turnover panel pallet (7), turnover panel (9) is connected with the turnover panel pallet by turnover panel spring (10), drawing tiltedly, (11) are threaded with main body, this has hydrophthalmia (12) on drawing tiltedly, sealing ring (8) is fixedlyed connected with the turnover panel pallet, it is characterized in that: sealed ball seat (2) is threaded with main body, axis of guide perigone (5) is threaded with main body, the axis of guide (6) is connected with sealing hemisphere (3), compression spring (4) is socketed in axis of guide outside, this axis of guide and this axis of guide perigone cross-under, and sealing hemisphere is connected with the sealed ball seat contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200938737U CN201050341Y (en) | 2007-06-08 | 2007-06-08 | Double safety casing inclined guiding check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200938737U CN201050341Y (en) | 2007-06-08 | 2007-06-08 | Double safety casing inclined guiding check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050341Y true CN201050341Y (en) | 2008-04-23 |
Family
ID=39336825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200938737U Expired - Fee Related CN201050341Y (en) | 2007-06-08 | 2007-06-08 | Double safety casing inclined guiding check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050341Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635329A (en) * | 2012-03-30 | 2012-08-15 | 西南石油大学 | Novel double-seal arrow-shaped check valve |
| CN102889067A (en) * | 2012-10-31 | 2013-01-23 | 中国海洋石油总公司 | Well fixing device capable of being multi-directionally vibrated |
| CN105317398A (en) * | 2014-07-23 | 2016-02-10 | 中国石油天然气股份有限公司勘探开发研究院 | Check valve used for bailing oil production |
| CN110513070A (en) * | 2019-09-12 | 2019-11-29 | 康庆刚 | Turnover plate type down-hole oil tube liquid controlled blowout preventing device |
| WO2021162767A1 (en) * | 2020-02-12 | 2021-08-19 | Halliburton Energy Services, Inc. | A reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose |
-
2007
- 2007-06-08 CN CNU2007200938737U patent/CN201050341Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635329A (en) * | 2012-03-30 | 2012-08-15 | 西南石油大学 | Novel double-seal arrow-shaped check valve |
| CN102889067A (en) * | 2012-10-31 | 2013-01-23 | 中国海洋石油总公司 | Well fixing device capable of being multi-directionally vibrated |
| CN102889067B (en) * | 2012-10-31 | 2016-01-13 | 中国海洋石油总公司 | Can the cementing unit of multidirectional vibration |
| CN105317398A (en) * | 2014-07-23 | 2016-02-10 | 中国石油天然气股份有限公司勘探开发研究院 | Check valve used for bailing oil production |
| CN110513070A (en) * | 2019-09-12 | 2019-11-29 | 康庆刚 | Turnover plate type down-hole oil tube liquid controlled blowout preventing device |
| CN110513070B (en) * | 2019-09-12 | 2024-02-02 | 康庆刚 | Flap type downhole oil pipe hydraulic control blowout preventer |
| WO2021162767A1 (en) * | 2020-02-12 | 2021-08-19 | Halliburton Energy Services, Inc. | A reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose |
| GB2604287A (en) * | 2020-02-12 | 2022-08-31 | Halliburton Energy Services Inc | A reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose |
| US11448038B2 (en) | 2020-02-12 | 2022-09-20 | Halliburton Energy Services, Inc. | Reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose |
| GB2604287B (en) * | 2020-02-12 | 2023-11-29 | Halliburton Energy Services Inc | A reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose |
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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: 20080423 |