CN202157782U - Improved sieve tube grading hoop for semi-cementing well - Google Patents
Improved sieve tube grading hoop for semi-cementing well Download PDFInfo
- Publication number
- CN202157782U CN202157782U CN2011202806264U CN201120280626U CN202157782U CN 202157782 U CN202157782 U CN 202157782U CN 2011202806264 U CN2011202806264 U CN 2011202806264U CN 201120280626 U CN201120280626 U CN 201120280626U CN 202157782 U CN202157782 U CN 202157782U
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- CN
- China
- Prior art keywords
- sleeve
- middle sliding
- sliding sleeve
- inner sleeve
- outer sleeve
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- Expired - Lifetime
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Abstract
The utility model discloses an improved sieve tube grading hoop for a semi-cementing well, which is formed by connecting a unidirectional circulator, a pressure relief sphere seat and a hit press packer. An upper connector and a lower connector of the unidirectional circulator are connected with an inner sleeve through threads, an outer sleeve is sleeved outside the inner sleeve with an interval, and a bypass valve hole is arranged on the lower portion of the outer sleeve. A compression spring is sleeved on the inner sleeve, a middle sliding sleeve is sleeved on the inner sleeve on the lower portion of the compression spring in matched mode, and the middle sliding sleeve is in sliding sealing fit with the inner sleeve and the outer sleeve. An inner liquid outlet is arranged on the wall of the inner sleeve at the lower end position of the middle sliding sleeve, a liquid storage cavity is arranged at the lower end of the middle sliding sleeve, and the liquid storage cavity is communicated with the inner liquid outlet. The upper portion of the middle sliding sleeve is fixedly connected with the outer sleeve through shearing nails, the bypass valve hole is sealed by the middle sliding sleeve, and the upper end and the lower end of the outer sliding sleeve are respectively sleeved on the upper connector and the lower connector and fixedly connected with the upper connector and the lower connector through fixing pins. The improved sieve tube grading hoop can enhance quality of well cementation and is convenient to use.
Description
Technical field
The utility model relates to the cementing equipment of petroleum industry, particularly a kind of improved screen casing sizing collar of partly cementing the well.
Background technology
In the completion practice of petroleum drilling engineering, need carry out the cementing well operation to the well bore of finishing drilling, with closed sandwich, let the crude oil in the oil reservoir flow into down-hole oil production equipment.And sizing collar is the important tool in the cementing well operation, is a kind of can open and closable special box cupling, makes the cementing job of a bite well be divided into secondary or three grades and accomplishes.That publishes in petroleum industry publishing house June nineteen ninety " discloses a kind of sizing collar in the 535th page of the drilling well handbook first volume one book chapter 4 the 7th joint " cementing technology " literary composition; This instrument adopts plug to open and close; This sizing collar is strict to the manufacturing of plug; During The field, often cause sizing collar in advance or sluggishness close influence well cementation effect.
Summary of the invention
The purpose of the utility model is to provide a kind of improved screen casing sizing collar of partly cementing the well, and it is simple in structure, is easy to make, and switch is flexible, can effectively improve cementing quality, and is easy to use.
The purpose of the utility model is achieved in that a kind of improved screen casing sizing collar of partly cementing the well; It is by unidirectional circulator, pressure release ball seat and suppress packer and interconnect and constitute, and through the inner sleeve that is being threaded, the outer spacer sleeve of inner sleeve is being adorned outer sleeve between the upper and lower joint of unidirectional circulator; The outer sleeve bottom is being provided with the bypass valve opening; Suit the compression spring on the inner sleeve, cooperate on the inner sleeve of compression spring bottom suit in the middle of sliding sleeve, all be slipper seal between middle sliding sleeve and inner sleeve and the outer sleeve and cooperate; Fluid hole in being provided with on the inner sleeve wall of middle sliding sleeve lower end; Middle sliding sleeve lower end is being provided with liquid storage cylinder, and liquid storage cylinder is connected with interior fluid hole, is fixed together through shear pin between middle sliding sleeve top and the outer sleeve; The bypass valve opening is sealed by middle sliding sleeve, and the upper/lower terminal of outer sleeve is set on the upper and lower joint and through fixing pin and upper and lower joint and is fixed together.
When the utility model uses; In tubing string, suppress; Under the pressure effect of spraining of suppressing packer and pressure release ball seat; Fluid under pressure in the sizing collar through interior fluid hole get into liquid storage cylinder upwards promote in the middle of sliding sleeve, middle sliding sleeve is cut off shear pin and is promoted the compression spring and makes its compression, is connected with bypass valve opening on the outer sleeve up to interior fluid hole; When the liquid in the sizing collar reduced pressure, the centre slided under the effect of compressing spring and moves downward the bypass valve bore closure.Can effectively control the circulation of cement paste when the utility model makes well cementation, switch is flexible, thereby improves cementing quality, prevents the unsettled situation of cementing quality, and it is simple in structure, is easy to make, and is easy to use.
Description of drawings
To combine accompanying drawing that the utility model is described further below.
Accompanying drawing 1 is looked the semi-section structural representation for the master of the utility model.
The specific embodiment
A kind of improved screen casing sizing collar of partly cementing the well, shown in accompanying drawing 1, it is by unidirectional circulator, pressure release ball seat and suppress packer and interconnect and constitute.Wherein unidirectional circulator the time plays the effect of cement paste cycling switch in well cementation, suppress packer in order to expand the tube sealing external packer with open unidirectional circulator, the pressure release ball seat is pressed and pressure release in order to sprain.
Through the inner sleeve that is being threaded, the outer spacer sleeve of inner sleeve is being adorned outer sleeve 2 between the upper and lower joint of unidirectional circulator, and outer sleeve 2 bottoms are being provided with bypass valve opening 6.Suit compression spring 3 on the inner sleeve, cooperate on the inner sleeve of compression spring 3 bottoms suit in the middle of sliding sleeve 5, all be slipper seal between middle sliding sleeve 5 and inner sleeve and the outer sleeve and cooperate.Fluid hole 7 in being provided with on the inner sleeve wall of middle sliding sleeve 5 lower ends; Middle sliding sleeve 5 lower ends are being provided with liquid storage cylinder; Liquid storage cylinder is connected with interior fluid hole 7; Be fixed together through shear pin 4 between middle sliding sleeve 5 tops and the outer sleeve 2, bypass valve opening 6 is by middle sliding sleeve 5 sealings, and the upper/lower terminal of outer sleeve 2 is set on the upper and lower joint and through fixing pin 1 and upper and lower joint and is fixed together.
When suppressing, liquid through interior fluid hole 7 get into liquid storage cylinders upwards promote in the middle of sliding sleeve 5, middle sliding sleeve is cut off shear pin 4 and is promoted compression spring 3 and makes its compression, is connected with bypass valve opening 6 on the outer sleeve up to interior fluid hole 7; During decompression, middle sliding sleeve 5 moves downward under the effect of compression spring 3 bypass valve opening 6 is closed.
Claims (1)
1. improved screen casing sizing collar of partly cementing the well; It is by unidirectional circulator, pressure release ball seat and suppress packer and interconnect and constitute; It is characterized in that: between the upper and lower joint of unidirectional circulator through the inner sleeve that is being threaded; The outer spacer sleeve of inner sleeve is being adorned outer sleeve (2), and outer sleeve (2) bottom is being provided with bypass valve opening (6), and suit compression spring (3) on the inner sleeve; Cooperate suit middle sliding sleeve (5) on the inner sleeve of compression spring (3) bottom; All be slipper seal between middle sliding sleeve (5) and inner sleeve and the outer sleeve and cooperate, interior fluid hole (7) is being set on the inner sleeve wall of middle sliding sleeve (5) lower end, middle sliding sleeve (5) lower end is being provided with liquid storage cylinder; Liquid storage cylinder is connected with interior fluid hole (7); Be fixed together through shear pin (4) between middle sliding sleeve (5) top and the outer sleeve (2), bypass valve opening (6) is by middle sliding sleeve (5) sealing, and the upper/lower terminal of outer sleeve (2) is set on the upper and lower joint and through fixing pin (1) and upper and lower joint and is fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202806264U CN202157782U (en) | 2011-08-04 | 2011-08-04 | Improved sieve tube grading hoop for semi-cementing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202806264U CN202157782U (en) | 2011-08-04 | 2011-08-04 | Improved sieve tube grading hoop for semi-cementing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202157782U true CN202157782U (en) | 2012-03-07 |
Family
ID=45765423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202806264U Expired - Lifetime CN202157782U (en) | 2011-08-04 | 2011-08-04 | Improved sieve tube grading hoop for semi-cementing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202157782U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895524A (en) * | 2015-05-26 | 2015-09-09 | 成都高普石油工程技术有限公司 | Classifying hoop |
| CN105257245A (en) * | 2015-10-12 | 2016-01-20 | 新疆罡拓能源科技有限公司 | Well completion machine tooth type slide sleeve tool |
| CN106285530A (en) * | 2015-05-27 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of pipe nipple apparatus entering well for tail pipe |
-
2011
- 2011-08-04 CN CN2011202806264U patent/CN202157782U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895524A (en) * | 2015-05-26 | 2015-09-09 | 成都高普石油工程技术有限公司 | Classifying hoop |
| CN106285530A (en) * | 2015-05-27 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of pipe nipple apparatus entering well for tail pipe |
| CN106285530B (en) * | 2015-05-27 | 2018-09-25 | 中国石油化工股份有限公司 | A kind of pipe nipple apparatus entering well for tail pipe |
| CN105257245A (en) * | 2015-10-12 | 2016-01-20 | 新疆罡拓能源科技有限公司 | Well completion machine tooth type slide sleeve tool |
| CN105257245B (en) * | 2015-10-12 | 2017-07-04 | 新疆罡拓能源科技有限公司 | The tooth-like sliding sleeve instrument of completion machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 834009, Tianchi South District, the Xinjiang Uygur Autonomous Region, Karamay 40-2-1 Patentee after: XINJIANG YONGSHENG ENERGY CO., LTD. Address before: 834000, No. 100, gateway Road, white alkali beach area, the Xinjiang Uygur Autonomous Region, Karamay Patentee before: Karamay Tallinn Petroleum Engineering Technology Services Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |