CN2890326Y - Internal boosting device for well cementing pipe - Google Patents
Internal boosting device for well cementing pipe Download PDFInfo
- Publication number
- CN2890326Y CN2890326Y CN 200620090691 CN200620090691U CN2890326Y CN 2890326 Y CN2890326 Y CN 2890326Y CN 200620090691 CN200620090691 CN 200620090691 CN 200620090691 U CN200620090691 U CN 200620090691U CN 2890326 Y CN2890326 Y CN 2890326Y
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- CN
- China
- Prior art keywords
- sliding sleeve
- pressure
- cementing
- sealing ring
- cut
- 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
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Abstract
An internal boosting device for well cementing pipe supercharging before bump-pressure and after drilling in oil exploitation and geological exploration which is composed of a collar 1, a sliding sleeve 2, a shear pin 3, a fixed hub 4, a sealing ring 5, an ontology 6; after the collar 1 is connected with the upper casing threads, install self-sealed male screw with the external taper and the fixed hub 4 with 2 to 20 fitting holes in circumferential direction in the male screw with a taper of the collar1, whose lower abuttal is arranged at the upper part of the ontology 6, then arrange a sliding sleeve 2 with 2 to 20 fitting holes in circumferential direction in the inner ring of the fixed hub 4, arrange 1 to 10 sealed ring groove at the peripheral of the s sliding sleeve 2, after the sealing ring 5 is installed, fix the sealing ring 5 with the shear pin 3, 1 to 10 circulation ports are in the middle of the sliding sleeve 2. The utility model resolves the issues of no quality guarantee due to seal seat of hydraulic devices before cementing and bump-pressure in the prior art, thus can be widely used in the process of supercharging before bump-pressure in cementing pipe after drilling.
Description
Technical field:
The utility model relates to a kind of oil development, geological prospecting supercharging device in the hydraulic means well cementation pipe that supercharging is used before bruising in boring completion well cementation process.
Background technology:
Present domestic oil field cuts off the work of opening for hydraulic means such as hydraulic suspension device, hydraulic centralizing device, external packer of pipe are built the pressure in completion and well cementation process.What adopt at present is that well cementation sealing cementing plug bumps seat and increases the seat envelope that realizes hydraulic means at support seat upward pressure in waiting to manage behind the precalculated position under tubing string, and the problem of existence is that the hydraulic means seat seals before the bruising that can not realize cementing the well, and can't guarantee cementing quality.
Summary of the invention:
The purpose of this utility model provides supercharging device in a kind of well cementation pipe, this device solves the hydraulic means seat envelope before the bruising that can not realize cementing the well that exists in the prior art, the problem that can't ensure the quality of products.It is under sleeve pipe behind the precalculated position cementing, when the sealing cementing plug bumps the precalculated position that is sitting in before the support seat in waiting to manage, increased pressure and hydraulic means is built the pressure cut off realize hydraulic base sealed.
The technical scheme that its technical problem that solves the utility model adopts is: in the well cementation pipe supercharging device by box cupling, sliding sleeve, cut off, fixed cover, joint ring, body form; After box cupling and upper sleeve screwed connection, the outside is provided with the pin thread that the band tapering has self seal, being circumferentially with 2～20 fixed covers that cut off installing hole is installed in the negative thread of band tapering in the box cupling, its lower end is seated against the upper end of body, be provided with at the inner ring of fixed cover again and circumferentially have 2～20 sliding sleeves that cut off installing hole, periphery at sliding sleeve is provided with 1～10 closure gasket groove, and is fixing with cutting off behind the installation joint ring, has circulation port in the middle of the sliding sleeve.When the completion practice setting of casing, this device and hydraulic means together are connected in the sleeve pipe of desired location, down to predetermined well depth, the circulating fluid well-flushing, make the interior clean mud property of well reach requirement, be pressed into cementing plug with drilling fluid during cementing, hydraulic means cuts off when cementing plug arrives that the pipe internal pressure is elevated to certain value suddenly on the sliding sleeve that the supercharging device place is sitting in supercharging device, continue to replace into drilling fluid pipe internal pressure and raise again, cutting off between the fixed cover that is installed in supercharging device and sliding sleeve cut off, continuing descending bumping with cementing plug sits on the retainer ring upward pressure and raises suddenly, finish for drilling mud practice, indicate that cement paste is all managed outer precalculated position for arriving in the pipe, and in pipe, form artificial well liquid, finish well cementing operation.
The beneficial effects of the utility model are, and are simple in structure, easy to use, safe and reliable, use this supercharging device hydraulic means seat envelope before the bruising that can realize cementing the well, and guaranteed cementing quality.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is the utility model A-A sectional schematic diagram.
Among the figure: 1, box cupling, 2, sliding sleeve, 3, cut off, 4, fixed cover, 5, joint ring, 6, body.
The specific embodiment:
In Fig. 1,2, in the well cementation pipe supercharging device comprise box cupling 1, sliding sleeve 2, cut off 3, fixed cover 4, joint ring 5, body 6; After box cupling 1 and upper sleeve screwed connection, the outside is provided with the pin thread that the band tapering has self seal, being circumferentially with 2～20 fixed covers 4 that cut off installing hole is installed in the negative thread of band tapering in the box cupling 1, its lower end is seated against the upper end of body 6, be provided with at the inner ring of fixed cover 4 again and circumferentially have 2～20 sliding sleeves 2 that cut off installing hole, periphery at sliding sleeve 2 is provided with 1～10 closure gasket groove, joint ring 5 backs is installed fixes with cutting off 3, has 1～20 circulation port in the middle of the sliding sleeve 2.
Claims (1)
1, supercharging device in a kind of well cementation pipe, by box cupling (1), sliding sleeve (2), cut off (3), fixed cover (4), joint ring (5), body (6), it is characterized in that: after box cupling (1) and the upper sleeve screwed connection, the outside is provided with the pin thread that the band tapering has self seal, being circumferentially with 2～20 fixed covers (4) that cut off installing hole is installed in the negative thread of band tapering in the box cupling (1), its lower end is seated against the upper end of body (6), be provided with at the inner ring of fixed cover (4) again and circumferentially have 2～20 sliding sleeves (2) that cut off installing hole, periphery at sliding sleeve (2) is provided with 1～10 closure gasket groove, joint ring (5) back is installed fixes, have 1～20 circulation port in the middle of the sliding sleeve (2) with cutting off (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090691 CN2890326Y (en) | 2006-05-01 | 2006-05-01 | Internal boosting device for well cementing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090691 CN2890326Y (en) | 2006-05-01 | 2006-05-01 | Internal boosting device for well cementing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2890326Y true CN2890326Y (en) | 2007-04-18 |
Family
ID=38020984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090691 Expired - Fee Related CN2890326Y (en) | 2006-05-01 | 2006-05-01 | Internal boosting device for well cementing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2890326Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573211A (en) * | 2013-10-18 | 2014-02-12 | 中国石油化工股份有限公司 | Composite bridge plug and central tube thereof |
| CN103573213A (en) * | 2012-07-20 | 2014-02-12 | 中国石油化工股份有限公司 | Underground instantaneous boosting tool and method |
| 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 |
-
2006
- 2006-05-01 CN CN 200620090691 patent/CN2890326Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573213A (en) * | 2012-07-20 | 2014-02-12 | 中国石油化工股份有限公司 | Underground instantaneous boosting tool and method |
| CN103573211A (en) * | 2013-10-18 | 2014-02-12 | 中国石油化工股份有限公司 | Composite bridge plug and central tube thereof |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070418 Termination date: 20110501 |