CN205577944U - Annular space pressurization well cementation device - Google Patents
Annular space pressurization well cementation device Download PDFInfo
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- CN205577944U CN205577944U CN201620391116.7U CN201620391116U CN205577944U CN 205577944 U CN205577944 U CN 205577944U CN 201620391116 U CN201620391116 U CN 201620391116U CN 205577944 U CN205577944 U CN 205577944U
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- cavity
- fixed cover
- sliding sleeve
- top connection
- utility
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Abstract
The utility model relates to an annular space pressurization well cementation device, including top connection, lower clutch, fixed cover and sliding sleeve, the top connection is installed in the lower clutch top, and the top connection is inside to be provided with first cavity, the inside second cavity that is provided with of lower clutch, and first cavity is corresponding with the second cavity, and the second cavity is inside to be provided with fixed cover, and fixed cover inboard is provided with the sliding sleeve, the utility model discloses simple structure, convenient to use, and can effectively improve the cementing quality.
Description
Technical field
This utility model relates to technical field of petroleum machinery, particularly relates to a kind of applied pressure by annulus cementing unit.
Background technology
For the exploitation in oil field, because the impact of many factors, subsurface picture has become considerably complicated,
The difficulty now cemented the well is increasing, and more and more higher to the prescription of well cementation, but in work
During because high pressure low permeability and water injection well to stop the note time short, cement slurry weight loss after cementing, make
Become pack quality poor, the technical problem of cement mortar leakage pressure.
Utility model content
The purpose of this utility model is to provide a kind of applied pressure by annulus cementing unit, solves of the prior art
The technical problem of leakage pressure；
The technical scheme that this utility model solves above-mentioned technical problem is as follows:
A kind of applied pressure by annulus cementing unit, including top connection, lower contact, fixed cover and sliding sleeve, described on
Joint is arranged on above lower contact, and described top connection is internally provided with the first cavity, inside described lower contact
Being provided with the second cavity, described first cavity and the second cavity are corresponding, and described second cavity inside is arranged
There is fixed cover, inside described fixed cover, be provided with sliding sleeve.
On the basis of technique scheme, this utility model can also do and improve as follows:
Further, the inwall of described second cavity upper end offering groove, described inside grooves is provided with
Described fixed cover, use this step provide the benefit that groove to place fixed cover, such sliding sleeve just can be with
The inner tight laminating of the second cavity, it is ensured that sliding sleeve operational reliability.
Further, it also includes that shear pin, described shear pin are arranged between sliding sleeve and fixed cover.
Further, it also includes that sealing ring, described sealing ring are positioned at the junction of top connection and lower contact,
The beneficial effect using this step is to ensure that top connection and the sealing of lower contact junction.
Wherein, after described sliding sleeve assembles with fixed cover, upper end is trapezoidal shape, when such sliding sleeve moves down, improves
For mud plug operational reliability.
This utility model is to be used in conjunction with each other with packer, and in use, this utility model is in envelope
Every device bottom, will send in the first cavity for mud plug, slide into sliding sleeve upper end for mud plug, this
Time, pressurize, because shear pin has and certain cuts off pressure, then packer is opened, and packing element is swollen
Swollen, continue pressurization, after cutting off shear pin, promote sliding sleeve descending, now give packer one pressure
Being allowed to more than strata pressure, finally make for mud plug setting on back pressure valve, such mud just can
It is pressed into supplementary, so, improves cementing quality.
The beneficial effects of the utility model:
1. this utility model for partial high pressure LOW PERMEABILITY RESERVOIR well cementation present in problem, improve cementing operation
During well cementation pressure, prevent annular space channelling, leakage pressure.
2. this utility model to interval isolation annular space apply a pressure, be allowed to equal to or more than strata pressure,
Less than formation fracture pressure, reach to prevent oil gas water breakthrough, improve the purpose of cementing quality with this.
3. after this utility model simple in construction, well cementation, pressure is steady, and can effectively prevent oil, gas and water disorderly
Alter.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of applied pressure by annulus cementing unit described in this utility model specific embodiment
Figure；
In accompanying drawing, the list of parts representated by each label is as follows:
1, top connection；
2, lower contact；
3, fixed cover；
4, sliding sleeve；
5, the first cavity；
6, the second cavity；
7, groove；
8, shear pin；
9, sealing ring.
Detailed description of the invention
Being described principle of the present utility model and feature below in conjunction with accompanying drawing, example is served only for solving
Release this utility model, be not intended to limit scope of the present utility model.
Embodiment:
A kind of applied pressure by annulus cementing unit as shown in Figure 1, including top connection 1, lower contact 2, fixes
Set 3 and sliding sleeve 4, described top connection 1 is arranged on above lower contact 2, and described top connection 1 is internal to be arranged
The first cavity 5, described lower contact 2 is had to be internally provided with the second cavity 6, described first cavity 5 and
Two cavitys 6 are corresponding, and described second cavity 6 is internally provided with fixed cover 3, inside described fixed cover 3
It is provided with sliding sleeve 4.
Wherein, the inwall of described second cavity 6 upper end offering groove 7, described groove 7 is internal to be set
It is equipped with described fixed cover 3；
In use, placing fixed cover 3 by the groove 7 offered, such sliding sleeve 4 just can be with
The inner tight laminating of two cavitys 6, it is ensured that sliding sleeve operational reliability, it is simple to the later stage pressurizes.
Wherein, it also includes that shear pin 8, described shear pin 8 are arranged on sliding sleeve 4 and fixed cover 3
Between.
Wherein, it also includes that sealing ring 9, described sealing ring 9 are positioned at the company of top connection 1 and lower contact 2
Meet place；
In use, since it is desired that later stage pressurization, so needing to ensure sealing, permissible by sealing ring
Strengthen sealing.
Wherein, after described fixed cover 3 assembles with sliding sleeve 4, upper end is trapezoidal shape, in use, and sliding sleeve 4
Move down, improve for mud plug operational reliability.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, all
Within protection domain of the present utility model should be included in.
Claims (4)
1. an applied pressure by annulus cementing unit, it is characterised in that include top connection, lower contact, fixed cover
And sliding sleeve, described top connection is arranged on above lower contact, and described top connection is internally provided with the first cavity,
Described lower contact is internally provided with the second cavity, and described first cavity and the second cavity are corresponding, and described
Two cavity insides are provided with fixed cover, are provided with sliding sleeve inside described fixed cover.
A kind of applied pressure by annulus cementing unit the most according to claim 1, it is characterised in that described the
Offering groove on the inwall of two cavity upper ends, described inside grooves is provided with described fixed cover.
A kind of applied pressure by annulus cementing unit the most according to claim 2, it is characterised in that it also wraps
Including shear pin, described shear pin is arranged between sliding sleeve and fixed cover.
4. according to the arbitrary described a kind of applied pressure by annulus cementing unit of claim 1-3, it is characterised in that
It also includes that sealing ring, described sealing ring are positioned at the junction of top connection and lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620391116.7U CN205577944U (en) | 2016-04-29 | 2016-04-29 | Annular space pressurization well cementation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620391116.7U CN205577944U (en) | 2016-04-29 | 2016-04-29 | Annular space pressurization well cementation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205577944U true CN205577944U (en) | 2016-09-14 |
Family
ID=56858329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620391116.7U Expired - Fee Related CN205577944U (en) | 2016-04-29 | 2016-04-29 | Annular space pressurization well cementation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205577944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327284A (en) * | 2016-04-29 | 2017-11-07 | 扬州诚创石油机械有限公司 | A kind of applied pressure by annulus cementing unit |
| CN112963118A (en) * | 2019-12-13 | 2021-06-15 | 中国石油天然气股份有限公司 | Leakage stopping device and leakage stopping method |
-
2016
- 2016-04-29 CN CN201620391116.7U patent/CN205577944U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327284A (en) * | 2016-04-29 | 2017-11-07 | 扬州诚创石油机械有限公司 | A kind of applied pressure by annulus cementing unit |
| CN112963118A (en) * | 2019-12-13 | 2021-06-15 | 中国石油天然气股份有限公司 | Leakage stopping device and leakage stopping method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 225002 Fang Tong Road, Weiyang Economic Development Zone, Yangzhou, Jiangsu Patentee after: JIANGSU CHENG CHUANG INTELLIGENT EQUIPMENT Co.,Ltd. Address before: 225002 Fang Tong Road, Weiyang Economic Development Zone, Yangzhou, Jiangsu Patentee before: YANGZHOU CHENGCHUANG PETROLEUM MACHINERY 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: 20160914 |