CN201778719U - Floating self-sealing well sealing device - Google Patents
Floating self-sealing well sealing device Download PDFInfo
- Publication number
- CN201778719U CN201778719U CN2010201909254U CN201020190925U CN201778719U CN 201778719 U CN201778719 U CN 201778719U CN 2010201909254 U CN2010201909254 U CN 2010201909254U CN 201020190925 U CN201020190925 U CN 201020190925U CN 201778719 U CN201778719 U CN 201778719U
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- CN
- China
- Prior art keywords
- sealing
- upper shell
- lower house
- glue core
- space
- 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 self-sealing well sealing device for an oil well. In the floating self-sealing well sealing device, an upper shell is connected with a lower shell. The floating self-sealing well sealing device is characterized in that a glue core is arranged in a space formed by the upper shell and the lower shell; and the glue core can radially move in the shells along with the swing of a tubular column. The utility model has the advantages of high sealing performance, long service life and simple structure, and is convenient to maintain.
Description
Technical field:
The utility model relates to a kind of oil well self-sealing blowout preventer.
Background technology:
At present, in the underground work process, need supporting blowout preventer, self-styled, particularly change and take out, in the constructions such as sand washing, brill plug, more need the ring set space between oil pipe and the sleeve pipe is sealed in overflow well, blowing.Current use self-styled be because self-sealing rubber core and the coaxial installation of housing, simultaneously because the factor affecting of derrick deviation, travelling block swing, when crossing box cupling, anti-ly hang, sealing effectiveness is poor, application life weak point; Current annular preventer if install and use in the light maintenance job execution, causes well head higher, and operation inconvenience needs to be equipped with hydraulic power source simultaneously and expense is higher.
Summary of the invention:
The utility model proposes a kind of new solution just at the problems referred to above.The utility model good seal performance, long service life, simple in structure, be convenient to execute-in-place, support expense is low.
The technical scheme that the utility model provides is:
Movable self-sealing preventor, upper shell is connected with lower house, is mounted with the glue core in the space that upper shell and lower house form.
Preferably, the external diameter of glue core is less than the internal diameter in the space of upper shell and lower house formation, and the glue core can move in radial direction in the space of upper shell and lower house formation.
Preferably, be provided with sealing ring between upper shell and the lower house.
Preferably, the distance of the upper and lower end face in the space of upper shell and lower house formation is less than the length of box cupling.
Preferably, the upper and lower end face portion in the space that forms with upper shell and lower house respectively all the time of the upper and lower end face of glue core is overlapping.
Preferably, glue in-core bore dia is less than tubing diameter.
The utlity model has following technological merit:
1, rise, in the going down process, the guiding box cupling enters the glue core, the glue core is coaxial with tubing string all the time, the glue core is done in the space that upper and lower casing forms with the tubing string swing and is radially wobbled, and can effectively prevent to bump extension, has prolonged the application life of glue core;
2, the distance of the upper and lower end face in the space of upper shell and lower house formation can be set upright box cupling less than the length of box cupling, reduces the damage to the glue core simultaneously, improves the application life of glue core;
3, seal by sealing ring between upper shell and the lower house, interference fit forms sealing between tubing string and the glue core, between upper shell lower surface and the glue core upper surface all the time part contact to form and seals, the lower surface of going up top glue core when in the well pressure being arranged has the envelope of helping effect, thereby realizes the sealing of oil sets annular space.
Description of drawings
Fig. 1 is a structural representation of the present utility model
1 upper shell, 2 lower houses, 3 glue cores, 4 sealing rings
The specific embodiment
As shown in the figure, movable self-sealing preventor, upper shell 1 is connected with lower house 2.Be mounted with glue core 3 in the space that upper shell 1 and lower house 1 form.The external diameter of glue core 3 is less than the internal diameter of upper shell 1 with the space of lower house 2 formation.
The distance of the upper and lower end face in the space that upper shell 1 and lower house 2 form is less than the length of box cupling.
The upper and lower end face portion in the space that glue core 3 upper and lower end faces form with upper shell 1 and lower house 2 respectively all the time is overlapping.Glue core 3 diameter of bores are less than tubing diameter.
Rise, in the going down process, the guiding box cupling enters glue core 3, glue core 3 is coaxial with tubing string all the time, glue core 3 is done in the space that upper shell 1 and lower house 2 form with the tubing string swing and is radially wobbled.
Be provided with sealing ring 4 between upper shell 1 and the lower house 2.
Claims (6)
1. movable self-sealing preventor, upper shell is connected with lower house, it is characterized in that, is mounted with the glue core in the space that upper shell and lower house form.
2. according to the described movable self-sealing preventor of claim 1, it is characterized in that the external diameter of glue core is less than the internal diameter in the space of upper shell and lower house formation, the glue core can move in radial direction in the space of upper shell and lower house formation.
3. according to the described movable self-sealing preventor of claim 1, it is characterized in that, be provided with sealing ring between upper shell and the lower house.
4. according to the described movable self-sealing preventor of claim 1, it is characterized in that the distance of the upper and lower end face in the space that upper shell and lower house form is less than the length of box cupling.
5. according to the described movable self-sealing preventor of claim 1, it is characterized in that the upper and lower end face portion in the space that the upper and lower end face of glue core forms with upper shell and lower house respectively all the time is overlapping.
6. according to the described movable self-sealing preventor of claim 1, it is characterized in that glue in-core bore dia is less than tubing diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201909254U CN201778719U (en) | 2010-05-14 | 2010-05-14 | Floating self-sealing well sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201909254U CN201778719U (en) | 2010-05-14 | 2010-05-14 | Floating self-sealing well sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778719U true CN201778719U (en) | 2011-03-30 |
Family
ID=43791932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201909254U Expired - Fee Related CN201778719U (en) | 2010-05-14 | 2010-05-14 | Floating self-sealing well sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899957A (en) * | 2010-05-14 | 2010-12-01 | 濮阳市益新石油技术有限公司 | Movable self-sealing preventor |
-
2010
- 2010-05-14 CN CN2010201909254U patent/CN201778719U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899957A (en) * | 2010-05-14 | 2010-12-01 | 濮阳市益新石油技术有限公司 | Movable self-sealing preventor |
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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: 20110330 Termination date: 20120514 |