CN203308432U - Novel well cementation rubber plug - Google Patents
Novel well cementation rubber plug Download PDFInfo
- Publication number
- CN203308432U CN203308432U CN2012204697694U CN201220469769U CN203308432U CN 203308432 U CN203308432 U CN 203308432U CN 2012204697694 U CN2012204697694 U CN 2012204697694U CN 201220469769 U CN201220469769 U CN 201220469769U CN 203308432 U CN203308432 U CN 203308432U
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- China
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- rubber plug
- well cementation
- casing pipe
- novel
- wall
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- Expired - Fee Related
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Abstract
The utility model relates to a rubber plug used in the working links of petroleum drilling and well cementing, in particular to a novel well cementation rubber plug. The novel well cementation rubber plug has good sealing performance, and effective bottom resting of the rubber plug can be guaranteed. The novel well cementation rubber plug comprises a casing pipe and a body (3). A top leather cup (1) is arranged on the top of the body (3), scraping wings (2) are arranged on the outer wall of the body (3), and an aluminum post (4) is arranged in the body (3). With the structure, due to the fact that the top leather cup is fastened to the wall of the casing pipe, the good sealing effect is achieved; due to the fact that large-angle design is adopted in the scrapping wings, slurry liquid on the wall of the casing pipe, especially, slurry liquid in a connecting groove of the casing pipe, can be effectively scrapped out; the well cementation rubber plug can bear two-way pressure applied by cement and displacement fluid in the casing pipe due to the body and the aluminum post; the non-cylindrical structure of the aluminum post enhances the compaction rate of body rubber; due to the fact that the large-angle design is adopted in the lower portions of the five scrapping wings, the novel well cementation rubber plug can be conveniently placed into a well cementation cement head.
Description
Technical field
The utility model relates to the plug in a kind of oil drilling well cementing operation link, especially a kind of Novel cementing plug.
Background technology
At present, the conventional cementing plug material of well cementation is to be formed by rubber, the sulfuration of aluminium sheet (or aluminium post) material that drillability is good.After cemented up is starched, by the tamponade liquid of cementing concrete truck replacement some, cementing plug, from cementing head, being pressed in sleeve pipe, then being carried out to normal replacing and starches until cementing plug is replaced to float collar (or back-pressure valve) and locates to seal, the formation bruising.Along with In Oil Field Exploration And Development deeply and refinement, deep-well, ultradeep well, long interval isolation well are more and more, so need to develop the Novel cementing plug, have the characteristics such as heatproof, abrasion resistance are good.To consider in addition to replace slurry pressure high because the sealing segment length causes the later stage, prevent the complex situations that cementing plug punctures.
Summary of the invention
The utility model provides a kind of good sealing property that has, and the assurance plug is effectively sat the Novel cementing plug at the end.Its technical scheme is that the Novel cementing plug comprises sleeve pipe, body, and bodies top is provided with the top leather cup, and the body outer wall is provided with the scraping wing, is provided with the aluminium post in body interior.The aluminium post adopts non-cylindrical configuration, and body is coated on the aluminium post outside, and the outer wall shape size of top leather cup and sleeve pipe is corresponding, and formation closely cooperates.Body is mainly made by acrylonitrile-butadiene rubber, and wearing layer is adhered in the outside, and the scraping wing is elastic caoutchouc, and between the upside of the scraping wing and body, angle is right angle, and downside and body angle are obtuse angle, and the scraping wing forms by 5.After adopting said structure, due to top leather cup lock ring, on casing wall, play good sealing, at the bottom of having guaranteed effective seat of plug.The scraping wing has adopted the design of wide-angle, can be effectively by casing wall, and especially the mud liquid in the sleeve pipe link slot scrapes.Body and aluminium post make cementing plug can bear the bidirection press from cement and displacement fluid in sleeve pipe.The non-cylindrical configuration of aluminium post, add the compaction rate that is better than body rubber; The scraping wing forms by 5, and the design of wide-angle has been adopted in bottom, in the cementing cement head of conveniently packing into; There are canvas layer in top and the bottom of body, strengthen the longitudinal strength of plug, improve anti-pressure ability.139.7mm plug sealing load reaches 28MPa in the field experiment of ground, there is no seepage; 177.8mm the field trial pressure of plug reaches 20MPa seepage does not occur.By the use in the part well, can meet on-the-spot operation technique requirement fully.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The Novel cementing plug comprises sleeve pipe, body 3, and body 3 tops are provided with top leather cup 1, and body 3 outer walls are provided with the scraping wing 2, is provided with aluminium post 4 in body 3 inside.Aluminium post 4 adopts non-cylindrical configuration, and body 3 is coated on aluminium post 4 outsides, and top leather cup 1 is corresponding with the outer wall shape size of sleeve pipe, and formation closely cooperates.Body 3 is mainly made by acrylonitrile-butadiene rubber, and wearing layer is adhered in the outside, and the scraping wing 2 is elastic caoutchouc, and between the upside of the scraping wing 2 and body 3, angle is right angle, and downside and body 3 angles are obtuse angle.The scraping wing 2 forms by 5.
Claims (3)
1. Novel cementing plug, it is characterized in that: comprise sleeve pipe, body (3), body (3) top is provided with top leather cup (1), and body (3) outer wall is provided with the scraping wing (2), is provided with aluminium post (4) in body (3) inside.
2. Novel cementing plug according to claim 1, it is characterized in that: aluminium post (4) adopts non-cylindrical configuration, body (3) is coated on aluminium post (4) outside, and top leather cup (1) is corresponding with the outer wall shape size of sleeve pipe, and formation closely cooperates.
3. Novel cementing plug according to claim 2, it is characterized in that: body (3) is mainly made by acrylonitrile-butadiene rubber, wearing layer is adhered in the outside, the scraping wing (2) is elastic caoutchouc, between the upside of the scraping wing (2) and body (3), angle is right angle, downside and body (3) angle is obtuse angle, and the scraping wing (2) forms by 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204697694U CN203308432U (en) | 2012-09-09 | 2012-09-09 | Novel well cementation rubber plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204697694U CN203308432U (en) | 2012-09-09 | 2012-09-09 | Novel well cementation rubber plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308432U true CN203308432U (en) | 2013-11-27 |
Family
ID=49614648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204697694U Expired - Fee Related CN203308432U (en) | 2012-09-09 | 2012-09-09 | Novel well cementation rubber plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308432U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555563A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Casing recess cleans well cementing impact pressure plug |
| CN107313726A (en) * | 2016-04-27 | 2017-11-03 | 中国石油化工股份有限公司 | A kind of sleeve pipe cementing head Quick hoop and its application method |
| CN115506746A (en) * | 2022-10-15 | 2022-12-23 | 中石化江汉石油工程有限公司 | Polyurethane rubber plug structure |
-
2012
- 2012-09-09 CN CN2012204697694U patent/CN203308432U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555563A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Casing recess cleans well cementing impact pressure plug |
| CN106555563B (en) * | 2015-09-24 | 2019-09-20 | 中国石油化工股份有限公司 | Casing recess cleans well cementing impact pressure rubber plug |
| CN107313726A (en) * | 2016-04-27 | 2017-11-03 | 中国石油化工股份有限公司 | A kind of sleeve pipe cementing head Quick hoop and its application method |
| CN107313726B (en) * | 2016-04-27 | 2019-12-13 | 中国石油化工股份有限公司 | Casing cement head fast-assembling clamp and using method thereof |
| CN115506746A (en) * | 2022-10-15 | 2022-12-23 | 中石化江汉石油工程有限公司 | Polyurethane rubber plug structure |
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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: 20131127 Termination date: 20140909 |
|
| EXPY | Termination of patent right or utility model |