CN206957630U - A kind of dual fail-safe annular preventer - Google Patents
A kind of dual fail-safe annular preventer Download PDFInfo
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- CN206957630U CN206957630U CN201720581189.7U CN201720581189U CN206957630U CN 206957630 U CN206957630 U CN 206957630U CN 201720581189 U CN201720581189 U CN 201720581189U CN 206957630 U CN206957630 U CN 206957630U
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- housing
- piston
- top cover
- dual fail
- safe
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Abstract
The utility model discloses a kind of dual fail-safe annular preventer, including the first housing and top cover, sealed set has the second housing on first housing, the top cover is the upper end that hemispherical configuration and sealing are securedly mounted to the second housing, the middle and lower part of second housing is provided with and top cover inner-cavity structure the second annular seal space of identical, the superstructure of second housing is identical with the structure of the first housing, the middle and upper part of second housing and the inside of the first housing are provided with piston, the top cover and being internally located at directly over corresponding piston for the second annular seal space are provided with glue core, the medial surface interlocking of the piston has guide.This kind of dual fail-safe annular preventer improves shut-in well ability, ensures glue core tight close, reduces friction, improves the smooth degree of piston movement and ageing.
Description
Technical field
A kind of oil equipment is the utility model is related to, specially a kind of dual fail-safe annular preventer.
Background technology
Drilling and repairing well is equipment essential in oil and natural gas drilling engineering with preventer, and its types includes ring
Shape preventer, ram preventer, drilling spool etc..Existing annular preventer is generally equipped with the large-scale gate of ram blowout preventer
Door, can form one annular space sealed during running between tubing string and pit shaft, also can be single in the case of having tubing string in well
It is only to complete shut-in well, but do not allow long-term closing well to use, because glue core easily fails, and single glue core e insufficient to reply and dashed forward
Hair-like condition, piston, because oil pipe surface irregularities cause operation not smooth, influence sealing effect, and existing glue core in motion process
Annular groove, which contacts the debris accumulation scraped with oil pipe, in uphill process causes closure not close, oil leakage phenomenon occurs, causes to prevent
Spray failure, therefore a kind of it is proposed that dual fail-safe annular preventer.
Utility model content
The technical problems to be solved in the utility model is the defects of overcoming prior art, there is provided a kind of dual fail-safe annular blowout prevention
Device, in order to solve the above-mentioned technical problem, the utility model provide following technical scheme：
A kind of dual fail-safe annular preventer of the utility model, including the first housing and top cover, seal on first housing
The second housing is provided with, the top cover is hemispherical configuration and seals the upper end for being securedly mounted to the second housing, the second shell
The middle and lower part of body is provided with and top cover inner-cavity structure the second annular seal space of identical, the superstructure and first of second housing
The structure of housing is identical, and the middle and upper part of second housing and the inside of the first housing are provided with piston, the top cover and
Being internally located at directly over corresponding piston for two annular seal spaces is provided with glue core, and the medial surface interlocking of the piston has guide.
As a kind of preferred embodiment of the present utility model, the guide includes bushing and ball, multiple described rollings
Pearl is embedded on bushing.
As a kind of preferred embodiment of the present utility model, storage mud annular groove is provided with the upper ring surface of the glue core.
As a kind of preferred embodiment of the present utility model, the first shell intracorporeal site is in the pressure-releasing chamber of upper piston area
Connected with second shell intracorporeal site in the unlatching chamber on piston by hydraulic tube, the hydraulic tube is connected by isodiametric three-way connector
Hydraulic system, closing chamber of the first housing same as above with second shell intracorporeal site below piston connect also by hydraulic tube,
And hydraulic system is connected by isodiametric three-way connector.
The beneficial effect that the utility model is reached is：By setting up one group of glue core on the original basis, glue core is being ensured just
The validity often to work, and dual sealing further improves shut-in well ability；Storage mud annular groove on glue core at annular groove is used for depositing
The dirt that glue core scrapes out with oil-pipe external wall, ensure glue core tight close；Guide is inlayed on piston madial wall, utilizes piston
Roll rising on tubing wall using ball, reduce friction, improve the smooth degree of piston movement and ageing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is a kind of general assembly cross section structure schematic diagram of dual fail-safe annular preventer of the utility model；
Fig. 2 is a kind of guide structural representation of dual fail-safe annular preventer of the utility model.
In figure：The housings of 1- first；The housings of 2- second；3- top covers；4- glue cores；The annular seal spaces of 5- second；6- stores up mud annular groove；7- is led
Cylinder；71- bushings；72- balls；8- pistons；9- hydraulic tubes；10- isodiametric three-way connectors.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
Embodiment 1
As shown in Figure 1-2, a kind of dual fail-safe annular preventer, including the first housing 1 and top cover 3, seal on the first housing 1
The second housing 2 is provided with, top cover 3 is the upper end that hemispherical configuration and sealing are securedly mounted to the second housing 2, the second housing 2
Middle and lower part is provided with and the second annular seal space of inner-cavity structure identical 5 of top cover 3, the superstructure of the second housing 2 and the first housing 1
Structure it is identical, the inside of the middle and upper part of the second housing 2 and the first housing 1 is provided with piston 8, the annular seal space 5 of top cover 3 and second
Be internally located at directly over corresponding piston 8 and be provided with glue core 4, the medial surface interlocking of piston 8 has guide 7, and guide 7 includes lining
Set 71 and ball 72, multiple described balls 72 are embedded on bushing 71, and storage mud annular groove 6 is provided with the upper ring surface of glue core 4.
In the present embodiment, the first housing 1 is internally located at the pressure-releasing chamber on the top of piston 8 and the second housing 2 is internally located at piston 8
On unlatching chamber connected by hydraulic tube 9, hydraulic tube 9 by isodiametric three-way connector 10 connect hydraulic system, same as above first
The closing chamber that housing 1 is internally located at the lower section of piston 8 with the second housing 2 connects also by hydraulic tube 9, and passes through isodiametric three-way connector
10 connection hydraulic systems, two closing chambers and two unlatching chambers are connected by hydraulic tube 9 respectively, and utilize isodiametric three-way connector 10
Hydraulic system is connected, ensures that two groups of glue cores 4 work asynchronously.
Utility model works flow and advantage：This kind of dual fail-safe annular preventer, by setting up one on the original basis
Group glue core 4, the validity of the normal work of glue core 4 is ensured, and dual sealing further improves shut-in well ability；Annular groove on glue core 4
The storage mud annular groove 6 at place is used for depositing the dirt that glue core 4 scrapes out with oil-pipe external wall, ensures the tight close of glue core 4；Piston 8
Guide 7 is inlayed on madial wall, rising is rolled on tubing wall using ball 72 using piston 8, reduces friction, piston 8 is improved and transports
Dynamic smooth degree and ageing.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent substitution.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc.,
It should be included within the scope of protection of the utility model.
Claims (4)
1. a kind of dual fail-safe annular preventer, including the first housing (1) and top cover (3), it is characterised in that：First housing
(1) sealed set has the second housing (2) on, and the top cover (3) is hemispherical configuration and sealing is securedly mounted to the second housing (2)
Upper end, the middle and lower part of second housing (2) be provided with top cover (3) second annular seal space of inner-cavity structure identical (5), it is described
The superstructure of second housing (2) is identical with the structure of the first housing (1), the middle and upper part and first of second housing (2)
The inside of housing (1) is provided with piston (8), and the top cover (3) and the second annular seal space (5) are internally located at corresponding piston
(8) glue core (4) is provided with directly over, the medial surface interlocking of the piston (8) has guide (7).
2. dual fail-safe annular preventer as claimed in claim 1, it is characterised in that the guide (7) include bushing (71) and
Ball (72), multiple described balls (72) are embedded on bushing (71).
3. dual fail-safe annular preventer as claimed in claim 1, it is characterised in that set on the upper ring surface of the glue core (4)
There is storage mud annular groove (6).
4. dual fail-safe annular preventer as claimed in claim 1, it is characterised in that first housing (1) is internally located at work
The unlatching chamber that the pressure-releasing chamber on (8) top and the second housing (2) are internally located on piston (8) is filled in connect by hydraulic tube (9), it is described
Hydraulic tube (9) connects hydraulic system by isodiametric three-way connector (10), and the first housing (1) same as above and the second housing (2) are interior
The closing chamber that portion is located at below piston (8) connects also by hydraulic tube (9), and connects hydraulic pressure system by isodiametric three-way connector (10)
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720581189.7U CN206957630U (en) | 2017-05-24 | 2017-05-24 | A kind of dual fail-safe annular preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720581189.7U CN206957630U (en) | 2017-05-24 | 2017-05-24 | A kind of dual fail-safe annular preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206957630U true CN206957630U (en) | 2018-02-02 |
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ID=61375625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201720581189.7U Active CN206957630U (en) | 2017-05-24 | 2017-05-24 | A kind of dual fail-safe annular preventer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608009A (en) * | 2019-10-22 | 2019-12-24 | 青岛理工大学 | Annular blowout preventer cage core type hydraulic drive quick locking device |
| CN110924891A (en) * | 2019-12-12 | 2020-03-27 | 胡全生 | Movable double-rubber-core underwater annular blowout preventer |
| CN111622705A (en) * | 2020-07-28 | 2020-09-04 | 东营市正能石油科技有限公司 | Universal annular blowout preventer for oil field wellhead |
| CN115075766A (en) * | 2022-08-16 | 2022-09-20 | 泰州远鹏吊索具有限公司 | Swabbing steel wire rope blowout preventer for oil field |
| CN115898319A (en) * | 2023-02-24 | 2023-04-04 | 四川新为橡塑有限公司 | Compound annular preventer of two rubber cores |
| CN116146140A (en) * | 2023-04-20 | 2023-05-23 | 山东立特石油科技有限公司 | Blowout preventer for wellhead of oil well |
-
2017
- 2017-05-24 CN CN201720581189.7U patent/CN206957630U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608009A (en) * | 2019-10-22 | 2019-12-24 | 青岛理工大学 | Annular blowout preventer cage core type hydraulic drive quick locking device |
| CN110924891A (en) * | 2019-12-12 | 2020-03-27 | 胡全生 | Movable double-rubber-core underwater annular blowout preventer |
| CN111622705A (en) * | 2020-07-28 | 2020-09-04 | 东营市正能石油科技有限公司 | Universal annular blowout preventer for oil field wellhead |
| CN111622705B (en) * | 2020-07-28 | 2020-10-16 | 东营市正能石油科技有限公司 | Universal annular blowout preventer for oil field wellhead |
| CN115075766A (en) * | 2022-08-16 | 2022-09-20 | 泰州远鹏吊索具有限公司 | Swabbing steel wire rope blowout preventer for oil field |
| CN115898319A (en) * | 2023-02-24 | 2023-04-04 | 四川新为橡塑有限公司 | Compound annular preventer of two rubber cores |
| CN116146140A (en) * | 2023-04-20 | 2023-05-23 | 山东立特石油科技有限公司 | Blowout preventer for wellhead of oil well |
| CN116146140B (en) * | 2023-04-20 | 2023-06-16 | 山东立特石油科技有限公司 | Blowout preventer for wellhead of oil well |
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