CN203783514U - Oil well sealing device operated under pressure - Google Patents
Oil well sealing device operated under pressure Download PDFInfo
- Publication number
- CN203783514U CN203783514U CN201420190043.6U CN201420190043U CN203783514U CN 203783514 U CN203783514 U CN 203783514U CN 201420190043 U CN201420190043 U CN 201420190043U CN 203783514 U CN203783514 U CN 203783514U
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- China
- Prior art keywords
- gear
- plug
- sealing device
- oil well
- rotation
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- Expired - Fee Related
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Abstract
The utility model relates to a well sealing device, in particular to an oil well sealing device operated under pressure. According to the technical scheme, the oil well sealing device comprises a center pipe, a gland, a rubber plug fixing sleeve, a gear sleeve, a gear and a rotating rubber plug. The gland is fixed to the upper portion of the center pipe, the rubber plug fixing sleeve is fixed into the center pipe, the lower portion of the rubber plug fixing sleeve is connected with the rotating rubber plug, the top of the rotating rubber plug is connected with the rubber plug fixing sleeve through a rotating shaft, the annular gear sleeve is arranged outside the rotating rubber plug, a gear matched with the gear sleeve is arranged outside the gear sleeve, a rotating buckle is arranged outside the gear, and a braking rack is arranged between the gear and the rotating buckle. The oil well sealing device has the advantages of being simple in structure, small in size, reliable in performance, long in service life, light in weight, convenient to operate on the scene and good in oil well sealing effect.
Description
Technical field
The utility model relates to a kind of well-sealing device, particularly a kind of oil well operation under pressure well-sealing device.
Background technology
Oil field (oil reservoir) the management later stage keeps mainly with water injection well or recovers formation pressure, increase stratum energy, makes oil reservoir have stronger driving force, to improve exploitation rate and the recovery ratio of oil reservoir.Will be with a large amount of well killing fluid kill-jobs during operation in the past, the residual pressure of down-hole is everlasting in operation with potential safety hazard; If adopt to bleed off pressure at well head, often have that sewage reclaims, a periphery oil-well strata energy decreases and cause the underproduction, the time-consuming effort again of the complete renwing stratum again of operation energy! At present, the universal and utility ratio of Oil/gas Well operation with pressure has obtained significant growth, carries out Oil/gas Well operation with pressure on ground, and its advantage is not use well killing fluid to carry out operation, thereby has eliminated the Latent destruction of pressure liquid for payzone.The application of Operating Pressure service in oil field, mainly contain now three kinds of modes: 1, (snubbing serving is as the highest form of expression in well workover service with pressure, and snubbing serving can realize removing of oil pipe column for steel wire operation (comprising steel wire and wireline operation) 2, coiled tubing 3, snubbing serving.Coiled tubing does not possess this function);
In oil gas with pressure, water injection well operation, realize that removing of oil pipe column must carry out shutoff to tail pipe, with the safety coefficient that guarantees Operating Pressure and prevent the environment to well site! The steel wire operation blocking device with pressure that domestic existing operation is used is all the external product of import, not only complex structure, cost are high, and the expense of use, lease, operation is surprising, and technology controls by external instrument service provider, is domestic scale cost for oil production and Ji Shu De bottle neck.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of oil well operation under pressure well-sealing device is provided.
Its technical scheme is: comprise central tube, gland, plug fixed cover, geared sleeve, gear, rotation plug, the top stationary gland of central tube, the inside of central tube is plug fixed cover fixedly, the bottom of described plug fixed cover connects rotation plug, described rotation plug top connects plug fixed cover by axis of rotation, the outside of described rotation plug is provided with annular tooth wheel case, the outside of geared sleeve is provided with gear with matching, the outside of gear is provided with rotation buckle, between described gear and rotation buckle, is provided with braking tooth bar.
Above-mentioned braking tooth bar is arc-shaped rack.
Above-mentioned rotary rubber is provided with the draw-in groove of fixed teeth wheel case beyond the Great Wall.
The beneficial effects of the utility model are: simple in structure, volume is little, dependable performance, life-span long, lightweight, execute-in-place is convenient, oil well good sealing effect, can obviously improve heavy repair task speed and operation quality, the outside of rotation plug is provided with annular tooth wheel case, the outside of geared sleeve is provided with gear with matching, the outside of gear is provided with rotation buckle, between described gear and rotation buckle, be provided with braking tooth bar, by rotation, rotate buckle and realize gear and rotate, gear rotates the rotation of driven rotary plug and realizes oil well sealing.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is gear and the structural representation that rotates buckle;
Accompanying drawing 3 is structural representations of fixed teeth wheel case;
In upper figure: central tube 1, gland 2, plug fixed cover 3, geared sleeve 4, gear 5, rotation plug 6, rotation buckle 7, braking tooth bar 8, draw-in groove 4.1.
The specific embodiment
1-3 by reference to the accompanying drawings, the utility model will be further described:
The utility model comprises central tube 1, gland 2, plug fixed cover 3, geared sleeve 4, gear 5, rotation plug 6, rotate buckle 7, braking tooth bar 8, the top stationary gland 2 of central tube 1, the inside of central tube 1 is plug fixed cover 3 fixedly, the bottom of described plug fixed cover 3 connects rotation plug 6, described rotation plug 6 tops connect plug fixed cover 3 by axis of rotation, the outside of described rotation plug 6 is provided with annular tooth wheel case 4, the outside of geared sleeve 4 is provided with gear 5 with matching, the outside of gear 5 is provided with rotates buckle 7, between described gear 5 and rotation buckle 7, be provided with braking tooth bar 8, by rotation, rotate buckle 7 and realize gear 5 rotations, gear 5 rotates 6 rotations of driven rotary plug and realizes oil well sealing.
Braking tooth bar 8 is wherein arc-shaped rack, and arc-shaped rack can better be realized gear 5 and the braking of rotating buckle 7.
Rotation plug 6 is wherein provided with the draw-in groove 4.1 of fixed teeth wheel case 4, and the draw-in groove 4.1 on rotation plug 6 is convenient to fixed teeth wheel case and is prevented geared sleeve slip dislocation.
The beneficial effects of the utility model are: simple in structure, volume is little, dependable performance, life-span long, lightweight, execute-in-place is convenient, oil well good sealing effect, can obviously improve heavy repair task speed and operation quality, the outside of rotation plug is provided with annular tooth wheel case, the outside of geared sleeve is provided with gear with matching, the outside of gear is provided with rotation buckle, between described gear and rotation buckle, be provided with braking tooth bar, by rotation, rotate buckle and realize gear and rotate, gear rotates the rotation of driven rotary plug and realizes oil well sealing.
Claims (3)
1. an oil well operation under pressure well-sealing device, it is characterized in that: comprise central tube (1), gland (2), plug fixed cover (3), geared sleeve (4), gear (5), rotation plug (6), rotate buckle (7), braking tooth bar (8), the top stationary gland (2) of central tube (1), the inside of central tube (1) is plug fixed cover (3) fixedly, the bottom of described plug fixed cover (3) connects rotation plug (6), described rotation plug (6) top connects plug fixed cover (3) by axis of rotation, the outside of described rotation plug (6) is provided with annular tooth wheel case (4), the outside of geared sleeve (4) is provided with gear with matching (5), the outside of gear (5) is provided with rotates buckle (7), between described gear (5) and rotation buckle (7), be provided with braking tooth bar (8).
2. oil well operation under pressure well-sealing device according to claim 1, is characterized in that: described braking tooth bar (8) is arc-shaped rack.
3. oil well operation under pressure well-sealing device according to claim 1, is characterized in that: described rotation plug (6) is provided with the draw-in groove (4.1) of fixed teeth wheel case (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190043.6U CN203783514U (en) | 2014-04-18 | 2014-04-18 | Oil well sealing device operated under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190043.6U CN203783514U (en) | 2014-04-18 | 2014-04-18 | Oil well sealing device operated under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783514U true CN203783514U (en) | 2014-08-20 |
Family
ID=51319714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420190043.6U Expired - Fee Related CN203783514U (en) | 2014-04-18 | 2014-04-18 | Oil well sealing device operated under pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783514U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368643A (en) * | 2016-09-20 | 2017-02-01 | 宁夏万殷机械制造科技有限公司 | Quick plug for oil pipe |
| CN107355191A (en) * | 2017-08-03 | 2017-11-17 | 中国石油天然气股份有限公司 | Well head sealing device |
-
2014
- 2014-04-18 CN CN201420190043.6U patent/CN203783514U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368643A (en) * | 2016-09-20 | 2017-02-01 | 宁夏万殷机械制造科技有限公司 | Quick plug for oil pipe |
| CN106368643B (en) * | 2016-09-20 | 2019-04-19 | 宁夏万殷机械制造科技有限公司 | Quick plug of oil pipe |
| CN107355191A (en) * | 2017-08-03 | 2017-11-17 | 中国石油天然气股份有限公司 | Well head sealing device |
| CN107355191B (en) * | 2017-08-03 | 2019-05-07 | 中国石油天然气股份有限公司 | Well head sealing device |
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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: 20140820 Termination date: 20150418 |
|
| EXPY | Termination of patent right or utility model |