CN202954772U - Whole rotation type annular preventer - Google Patents
Whole rotation type annular preventer Download PDFInfo
- Publication number
- CN202954772U CN202954772U CN 201220594585 CN201220594585U CN202954772U CN 202954772 U CN202954772 U CN 202954772U CN 201220594585 CN201220594585 CN 201220594585 CN 201220594585 U CN201220594585 U CN 201220594585U CN 202954772 U CN202954772 U CN 202954772U
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- CN
- China
- Prior art keywords
- rotation type
- type annular
- annular preventer
- lifting piston
- rotator
- 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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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The utility model relates to an oil gas water well underground operation tool, in particular to a whole rotation type annular preventer. A fixed flange of the whole rotation type annular preventer is connected with a rotator through a four-point contact ball slewing bearing, a lifting piston is installed inside the rotator, a rubber core is installed on the lifting piston, an outer sleeve is sleeved on the outer side of the rotator, and a channel communicated with the lifting piston and the outer sleeve is formed inside the rotator. According to the whole rotation type annular preventer, rotation seal rated working pressure can reach 70 MPa, working efficiency is high, tools do not need to pass through the rubber core in a forced mode when being placed downwards, and service life is long. Besides, the whole rotation type annular preventer overcomes the defects that for an existing rotary preventer, safe working pressure cannot exceed 14 MPa, working efficiency is low, and the tools need to pass through a pack-off head in a forced mode when being placed downwards to shorten service life of the pack-off head.
Description
Technical field:
The utility model relates to a kind of oil gas water well underground operation tool, particularly a kind of unitary rotation formula annular preventer.
Background technology:
Current rotating blowout preventer is to adopt self-sealing head self-styled mostly, because permissible working pressure can not surpass 14MPa, when Operating Pressure, below still need to install additional ram preventer or annular preventer, sometimes too high open flow step-down, operation technique complexity, the inefficiency also wanted of bottom pressure; Row be eager to excel while transferring instrument by self-sealing head, shorten self-sealing head application life.
The utility model content:
The technical problems to be solved in the utility model is to provide a kind of unitary rotation formula annular preventer, and this device has realized that the rotatory sealing rated operating pressure can reach 70MPa, and high efficiency does not need to pass through by force glue core, long service life while transferring instrument.Overcome existing rotating blowout preventer permissible working pressure and can not surpass 14MPa, inefficiency, the row of being eager to excel while transferring instrument, by self-sealing head, shortens the self-sealing head deficiency in application life.
Technical solution adopted in the utility model is: a kind of unitary rotation formula annular preventer comprises mounting flange and glue core; Mounting flange supports with rotary body and is connected by four-point contact ball slewing, and a rotating body is equipped with the lifting piston, and the glue core is installed on the lifting piston, and the rotary body outside is set with overcoat, and a rotating body is designed with the duct that is communicated with lifting piston and overcoat.
The beneficial effects of the utility model are: the utility model is installed the lifting piston owing to having adopted at a rotating body, the mode of glue core is installed on the lifting piston, thereby rotatory sealing rated operating pressure of the present utility model can reach 70Mpa, high efficiency, do not need to pass through by force glue core, long service life while transferring instrument.
The accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Accompanying drawing is structural representation of the present utility model.
The specific embodiment:
As shown in drawings, a kind of unitary rotation formula annular preventer, comprise mounting flange 1 and glue core 5; Mounting flange 1 supports with rotary body 2 and is connected by four-point contact ball slewing, lifting piston 3 is installed in rotary body 2, glue core 5 is installed on lifting piston 3, and rotary body 2 outsides are set with overcoat 4, are designed with the duct that is communicated with lifting piston 3 and overcoat 4 in rotary body 2.
When the utility model is installed, mounting flange 1 is connected with other blowout hookup and the top in whole blowout preventer set, and overcoat 4 is connected and fixed with the well workover frame.While not working, not by compression, internal diameter keeps maximum diameter to glue core 5.During work, by lifting piston 3 compression glue cores 5 sealing tubing strings, the tube post rotarily drives glue core 5 and rotary body 2 rotations simultaneously.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model not is limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.
Claims (1)
1. a unitary rotation formula annular preventer, comprise mounting flange (1) and glue core (5); It is characterized in that: mounting flange (1) supports with rotary body (2) and is connected by four-point contact ball slewing, lifting piston (3) is installed in rotary body (2), glue core (5) is installed on lifting piston (3), rotary body (2) outside is set with overcoat (4), is designed with the duct that is communicated with lifting piston (3) and overcoat (4) in rotary body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220594585 CN202954772U (en) | 2012-11-13 | 2012-11-13 | Whole rotation type annular preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220594585 CN202954772U (en) | 2012-11-13 | 2012-11-13 | Whole rotation type annular preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954772U true CN202954772U (en) | 2013-05-29 |
Family
ID=48460349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220594585 Expired - Fee Related CN202954772U (en) | 2012-11-13 | 2012-11-13 | Whole rotation type annular preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850662A (en) * | 2014-02-27 | 2014-06-11 | 中国海洋石油总公司 | Underwater annular preventer |
-
2012
- 2012-11-13 CN CN 201220594585 patent/CN202954772U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850662A (en) * | 2014-02-27 | 2014-06-11 | 中国海洋石油总公司 | Underwater annular preventer |
| CN103850662B (en) * | 2014-02-27 | 2016-04-27 | 中国海洋石油总公司 | One is annular preventer under water |
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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: 20130529 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |