CN205743815U - A kind of annular packoff casing head - Google Patents
A kind of annular packoff casing head Download PDFInfo
- Publication number
- CN205743815U CN205743815U CN201620459959.6U CN201620459959U CN205743815U CN 205743815 U CN205743815 U CN 205743815U CN 201620459959 U CN201620459959 U CN 201620459959U CN 205743815 U CN205743815 U CN 205743815U
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- CN
- China
- Prior art keywords
- casing head
- pressure release
- release passage
- shaft base
- ring shaft
- 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.)
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Abstract
This utility model provides a kind of annular packoff casing head, it is characterised in that including: housing, being provided with pressure release passage in described housing, pressure release passage top is provided with a plug；Blind flange, is positioned at described case top；Ring flange, is positioned at below described blind flange；Ring shaft base, is connected with described ring flange lower surface, and described ring shaft base side upper surface arranges screw, and described ring shaft base opposite side is provided with relief hole, and described relief hole is through with pressure release passage；Interface, is positioned at described housing sidewall；Mandrel hanger, mandrel hanger is setting in enclosure interior.Described annular packoff casing head, simple and compact for structure, easy to install and use, security performance is good, communicates with pressure release passage by setting up relief hole on ring shaft base, it is possible to provide an outlet to the pressure being accumulated between ectonexine sleeve pipe.
Description
Technical field
This utility model relates to oil exploration technology field, particularly a kind of annular packoff pipe box head.
Background technology
Casing head is Oil/gas Well well head fixing device, and one is to support inner layer sleeve weight；Two weights being subject to wellhead assembly
Amount；Three is to form pressure between ectonexine sleeve pipe to seal；Four is that the pressure for being accumulated between ectonexine sleeve pipe provides
One outlet or in case of emergency pumping liquid in well；Five is the special operation that can carry out drilling process aspect.
Be currently used for the casing head of high-pressure well, due to the needs of its bearing capacity, it has to use existing structure complicated and
Huge, installation difficulty is very big, the casing head that price is particularly expensive.But for mesolow well, also just use the said goods
Obviously it is exactly waste greatly.Current hanger and casing head junction use rubber ring to seal, and the pressure of rubber
Tightly tighten by above hanger 8 bolts and play sealing effectiveness, when lower temperature or hot operation, the rubber ring not only longevity
Order short and the most stiff or soften and seal request can not be met, bringing great hidden danger to safety in production.Existing hanger
Typically stopper slot is set by jackscrew and hanger outer surface and carries out spacing, the top when oil pipe is heated and produces the biggest upwards tension force
The power of silk far from be enough to the impulse force offset upwards and has an accident.
Therefore, in order to reduce cost, reduce installation difficulty, improve safety, need a kind of annular packoff pullover.
Utility model content
For solving the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of annular packoff pullover, described ring
Shape packer tube head, simple and compact for structure, easy to install and use, security performance is good, by setting up relief hole on ring shaft base
Communicate with pressure release passage, it is possible to provide an outlet to the pressure being accumulated between ectonexine sleeve pipe.
For reaching above-mentioned purpose, the technical solution of the utility model is:
A kind of annular packoff casing head, including:
Housing, is provided with pressure release passage in described housing, pressure release passage top is provided with a plug；
Blind flange, is positioned at described case top；
Ring flange, is positioned at below described blind flange；
Ring shaft base, is connected with described ring flange lower surface, and described ring shaft base side upper surface arranges screw, described ring
Oblique crank Z seat opposite side is provided with relief hole, and described relief hole is through with pressure release passage；
Interface, is positioned at described housing two side；
Mandrel hanger, mandrel hanger is setting in enclosure interior.
Further, the height of described ring shaft base is 0.8-3cm.
Separately, described blind flange is provided with alignment pin.
And, the number of described interface is one or two or three.
Meanwhile, described plug periphery is provided with sealing ring.
The beneficial effects of the utility model are:
A kind of annular packoff casing head described in the utility model, simple and compact for structure, easy to install and use, security performance
Good, communicate with pressure release passage by setting up relief hole on ring shaft base, it is possible to the pressure being accumulated between ectonexine sleeve pipe
One outlet is provided.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of annular packoff casing head provided by the utility model.
Wherein: 1 is housing, 2 is blind flange, and 3 is ring flange, and 4 is pressure release passage, and 5 is plug, and 6 is ring shaft base, and 7 are
Screw, 8 is relief hole, and 9 is interface, and 10 is mandrel hanger.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example further describes.
Embodiment 1
A kind of annular packoff casing head, including:
Housing 1, is provided with pressure release passage 4 in described housing 1, pressure release passage 4 top is provided with a plug 5；
Blind flange 2, is positioned at described housing 1 top；
Ring flange 3, is positioned at below described blind flange 2；
Ring shaft base 6, is connected with described ring flange 3 lower surface, and described ring shaft base 6 side upper surface arranges screw 7, institute
Stating ring shaft base 6 opposite side and be provided with relief hole 8, described relief hole 8 is through with pressure release passage 4；
Interface 9, is positioned at described housing 1 two side；
Mandrel hanger 10, mandrel hanger 10 is setting inside housing 1.
Further, the height of described ring shaft base 6 is 0.8-3cm.
Separately, described blind flange 3 is provided with alignment pin.
And, the number of described interface 9 is one or two or three.
Meanwhile, described plug 5 periphery is provided with sealing ring.
Described annular packoff casing head, simple and compact for structure, easy to install and use, security performance is good, by annular shaft
Set up relief hole on Zuo to communicate with pressure release passage, it is possible to provide an outlet to the pressure being accumulated between ectonexine sleeve pipe.
It should be noted that above example is only in order to illustrate the technical solution of the utility model and unrestricted.Although ginseng
According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to reality
Modifying or equivalent by novel technical scheme, without deviating from the scope of technical solutions of the utility model, it all should
Contain in right of the present utility model.
Claims (5)
1. an annular packoff casing head, it is characterised in that including:
Housing, is provided with pressure release passage in described housing, pressure release passage top is provided with a plug；
Blind flange, is positioned at described case top；
Ring flange, is positioned at below described blind flange；
Ring shaft base, is connected with described ring flange lower surface, and described ring shaft base side upper surface arranges screw, described annular shaft
Seat opposite side is provided with relief hole, and described relief hole is through with pressure release passage；
Interface, is positioned at described housing two side；
Mandrel hanger, mandrel hanger is setting in enclosure interior.
A kind of annular packoff casing head the most according to claim 1, it is characterised in that the height of described ring shaft base is
0.8-3cm。
A kind of annular packoff casing head the most according to claim 1, it is characterised in that be provided with location on described blind flange
Pin.
A kind of annular packoff casing head the most according to claim 1, it is characterised in that the number of described interface be one or
Two or three.
A kind of annular packoff casing head the most according to claim 1, it is characterised in that described plug periphery is provided with sealing
Circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620459959.6U CN205743815U (en) | 2016-05-19 | 2016-05-19 | A kind of annular packoff casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620459959.6U CN205743815U (en) | 2016-05-19 | 2016-05-19 | A kind of annular packoff casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205743815U true CN205743815U (en) | 2016-11-30 |
Family
ID=57364298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620459959.6U Active CN205743815U (en) | 2016-05-19 | 2016-05-19 | A kind of annular packoff casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205743815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882830A (en) * | 2021-09-10 | 2022-01-04 | 江苏双辉机械制造有限公司 | Energy-saving environment-friendly casing head |
-
2016
- 2016-05-19 CN CN201620459959.6U patent/CN205743815U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882830A (en) * | 2021-09-10 | 2022-01-04 | 江苏双辉机械制造有限公司 | Energy-saving environment-friendly casing head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |