CN205778676U - For interpolation cementing wellhead sealing device - Google Patents
For interpolation cementing wellhead sealing device Download PDFInfo
- Publication number
- CN205778676U CN205778676U CN201620484808.6U CN201620484808U CN205778676U CN 205778676 U CN205778676 U CN 205778676U CN 201620484808 U CN201620484808 U CN 201620484808U CN 205778676 U CN205778676 U CN 205778676U
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- interpolation
- lower flange
- drilling rod
- sealing device
- 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
Links
Abstract
The utility model discloses a kind of for interpolation cementing wellhead sealing device, formed between sleeve pipe and drilling rod and seal；Including upper and lower flange and be arranged at Gask-O-Seal therebetween, upper and lower flange is bolted together；Upper flange diameter is more than casing diameter, is provided with the box that the pin thread with drilling rod matches inside it；The pin thread matched with drilling rod box it is provided with on the downside of the middle part of lower flange；Meanwhile, the lateral surface of lower flange is the conical surface, and it matches with the end face of sleeve pipe；Sealing gasket I it is additionally provided with between lower flange and sleeve pipe.This device achieves the sealing between sleeve pipe and drilling rod with simple structure, simple to operate, can be effectively improved interpolation cementing operation safety, adapts to the well cementation of shallow-layer large scale sleeve pipe interpolation.
Description
Technical field
This utility model relates to cementing technology field, is specially one for interpolation cementing wellhead sealing device.
Background technology
At present, in large scale (339.7mm～508mm) sleeve pipe interpolation cementing technology, under the complete sleeve pipe rear enclosure mouth of pipe
Opening wide, cement the well in sleeve pipe after filling the series of processes such as slurry, employing is often shaft bottom sealed cementing slurry
Technology, well head lacks a kind of for interpolation cementing wellhead sealing device, it is impossible to safety, seals, efficiently cement the well.
Summary of the invention
In order to solve above-mentioned technical problem, this utility model provides one to be used for interpolation cementing wellhead sealing device, its
The sealing between sleeve pipe and drilling rod is achieved with simple structure, simple to operate, interpolation cementing operation safety can be effectively improved
Property, adapt to the well cementation of shallow-layer large scale (339.7mm～508mm) sleeve pipe interpolation.
To this end, the novel technical scheme of this use is as follows:
A kind of for interpolation cementing wellhead sealing device, formed between sleeve pipe and drilling rod and seal；Including upper and lower flange
With the Gask-O-Seal being arranged at therebetween, upper and lower flange is bolted together；
Described upper flange diameter is more than casing diameter, is provided with the box that the pin thread with drilling rod matches inside it；Under described
The pin thread matched with described drilling rod box it is provided with on the downside of the middle part of flange；Meanwhile, the lateral surface of described lower flange is the conical surface, its
Match with the end face of described sleeve pipe；Sealing gasket I it is additionally provided with between described lower flange and sleeve pipe.The core of upper and lower flange is stream
Body passage.
Further, the lateral surface of described lower flange is provided with screw thread.Increase lower flange, friction between sealing gasket and sleeve pipe
Power, improves sealing effectiveness.
Further, the external diameter of described lower flange is more than the internal diameter of sleeve pipe, less than the external diameter of sleeve pipe.
Further, the end face of described upper flange is provided with single or multiple suspension ring；Preferably, described suspension ring have two.Convenient
Install.
This is used for the sealing that interpolation cementing wellhead sealing device achieves between sleeve pipe and drilling rod with simple structure, behaviour
Make simple, interpolation cementing operation safety can be effectively improved, adapt in shallow-layer large scale (339.7mm～508mm) sleeve pipe
The method of inserting well cementation.
Accompanying drawing explanation
The profile for interpolation cementing wellhead sealing device that Fig. 1 provides for this utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, concrete structure of the present utility model is described in detail.
Embodiment 1
As it is shown in figure 1, a kind of for interpolation cementing wellhead sealing device, can be formed close between sleeve pipe 5 and drilling rod 6
Envelope；It structurally includes upper and lower flange 1,3 and is arranged at Gask-O-Seal 2 therebetween, and upper 1, lower 3 flanges are by bolt 4 even
It is connected together；Upper flange 1 diameter is more than sleeve pipe 5 diameter, is provided with the box that the pin thread with drilling rod 6 matches inside it；Lower flange 3
External diameter between the inside and outside footpath of sleeve pipe 5, can frame in cannula tip；Wherein subordinate side is provided with and matches with drilling rod 6 box
Pin thread；Meanwhile, the lateral surface of lower flange 3 is the conical surface, and it matches with the end face of sleeve pipe 5；Also set between lower flange 3 and sleeve pipe 5
There is sealing gasket I 7.The core of upper 1, lower 3 flanges is fluid passage.
Embodiment 2
It is with the difference being used for interpolation cementing wellhead sealing device in embodiment 1, the end face of upper flange 1 sets
There are two suspension ring 8.
Embodiment 3
It is, on the lateral surface of lower flange 3 with the difference being used for interpolation cementing wellhead sealing device in embodiment 1
It is provided with screw thread.Increase lower flange 3, frictional force between sealing gasket I 7 and sleeve pipe 5, improve sealing effectiveness.
In work, after the completeest sleeve pipe, lower drilling tool to prior precalculated position, by lower flange 3 by screw thread with drilling rod 6 even
Connect, sealing gasket, upper flange 1 are prevented the surface of lower flange 3, is bolted, form entirety, then lower flange 3 is pacified
Being placed on the surface of sleeve pipe 5, sealing gasket I 7 makes this be used between interpolation cementing wellhead sealing device and sleeve pipe 5 sealing.
Claims (5)
1., for an interpolation cementing wellhead sealing device, formed between sleeve pipe (5) and drilling rod (6) and seal；Including upper and lower
(1,3) flange and be arranged at Gask-O-Seal (2) therebetween, upper and lower flange is linked together by bolt (4)；
It is characterized in that: described upper flange (1) diameter is more than sleeve pipe (5) diameter, inside it, be provided with the pin thread phase with drilling rod (6)
The box joined；The pin thread matched with described drilling rod (6) box it is provided with on the downside of the middle part of described lower flange (3)；Meanwhile, under described
The lateral surface of flange (3) is the conical surface, and it matches with the end face of described sleeve pipe (5)；Between described lower flange (3) and sleeve pipe (5)
It is additionally provided with sealing gasket I (7).
2. as claimed in claim 1 for interpolation cementing wellhead sealing device, it is characterised in that: outside described lower flange (3)
Footpath is more than the internal diameter of sleeve pipe (5), less than the external diameter of sleeve pipe (5).
3. as claimed in claim 1 or 2 for interpolation cementing wellhead sealing device, it is characterised in that: described lower flange (3)
Lateral surface is provided with screw thread.
4. as claimed in claim 1 or 2 for interpolation cementing wellhead sealing device, it is characterised in that: described upper flange (1)
End face is provided with single or multiple suspension ring (8).
5. as claimed in claim 4 for interpolation cementing wellhead sealing device, it is characterised in that: described suspension ring (8) have two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620484808.6U CN205778676U (en) | 2016-05-25 | 2016-05-25 | For interpolation cementing wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620484808.6U CN205778676U (en) | 2016-05-25 | 2016-05-25 | For interpolation cementing wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778676U true CN205778676U (en) | 2016-12-07 |
Family
ID=58113081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620484808.6U Expired - Fee Related CN205778676U (en) | 2016-05-25 | 2016-05-25 | For interpolation cementing wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205778676U (en) |
-
2016
- 2016-05-25 CN CN201620484808.6U patent/CN205778676U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210918 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 |