CN201310318Y - Automatic-reset hydraulic grading hoop - Google Patents
Automatic-reset hydraulic grading hoop Download PDFInfo
- Publication number
- CN201310318Y CN201310318Y CNU2008201775854U CN200820177585U CN201310318Y CN 201310318 Y CN201310318 Y CN 201310318Y CN U2008201775854 U CNU2008201775854 U CN U2008201775854U CN 200820177585 U CN200820177585 U CN 200820177585U CN 201310318 Y CN201310318 Y CN 201310318Y
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- inner sliding
- urceolus
- hole
- holes
- 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
The utility model relates to an automatic-reset hydraulic grading hoop used for petroleum cementing and completion, which comprises a body (1), a baffle ring (2), a spring (3), an outer cylinder (4), shearing pins (5), an inner sliding sleeve (6) and a sealing device of the inner sliding sleeve. A pressure transmitting hole communicated with the outer cylinder is arranged inside the body (1); a limit step is arranged on the outer surface at one end of a through hole; one end of the inner sliding sleeve (6) is arranged on the step, and the spring (3) is arranged in the cavity formed by the other end surface of the inner sliding sleeve, the body (1), the baffle ring (2) and the outer cylinder (4); seal rings (7) are arranged in the grooves of the inner and the outer surfaces of the inner sliding sleeve (6), and sealed with the outer cylinder (4) and the body (1); a plurality of through holes are formed on the outer cylinder (4), wherein the small through holes thereof are uniformly distributed, of which the number is no less than three; the pins (5) are arranged inside of the through holes and used for fixing the inner sliding sleeve (6); and the big through holes adopt circulation holes, of which the number is no less than one. The utility mode has the advantages that the structure is simple, neither hole opening plugs nor hole closing plugs are required, and the inside diameter is in accordance with the drift diameter of casings so as to dispense with drill casing accessories.
Description
Technical field
The utility model relates to the solid completion casing sizing collar of half way in the petroleum industry, and the formula that particularly automatically resets hydraulic pressure sizing collar belongs to the downhole tool class.
Background technology
Along with the development of well cementation completion technique, the application of hydraulic pressure sizing collar is more prevalent, and existing hydraulic pressure sizing collar exists cementing operation needs to stay when the bradawl tool bores well cementation down perforate plug in the well after finishing, close annexes in the pipes such as stopple, blind plate joint.And the experience of oil field practical operation shows, boring the well cementation annex such as remove photoresist plug and blind plate and the residual water bod in the small size sleeve pipe is the operation of a time and effort consuming.
Summary of the invention
The purpose of this utility model is to provide the formula hydraulic pressure sizing collar that automatically resets, and can realize the hydraulic pressure perforate and automatically close the hole, need not to use the perforate plug and closes stopple, can remove the operation of drill sleeve annex after the solid completion from.
For achieving the above object, the technical scheme that the utility model provides is: mainly be made up of body, baffle ring, spring, urceolus, shear pin, inner sliding sleeve, inner sliding sleeve sealing device, body interior has pressure transmission hole and urceolus to be interconnected, and lead to the hole site one end external surface has limited step; Inner sliding sleeve one end places on the step, places spring in the cavity that other end and body, baffle ring and outer letter form, and several through holes is arranged, the uniform and built-in dowel fixes inner sliding sleeve of its small through hole on the urceolus; The inner sliding sleeve sealing device is a sealing ring, and the inner sliding sleeve surfaces externally and internally respectively has two grooves near the end, and inside and outside groove location is interlaced to be opened, and places sealing ring in the groove, makes the sealing of inner sliding sleeve external surface and urceolus, and its inner surface and body form sealing; Small through hole is at least 3 on the requirement urceolus, and large through-hole is a circulation port, is at least 1; Weld between baffle ring and body, the urceolus, body is threaded with urceolus.
The beneficial effects of the utility model are: simple in structure, need not to use the perforate plug and close stopple, internal diameter and run through casing size are consistent.
Description of drawings
Fig. 1 the utility model structural representation.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model is mainly by body 1, baffle ring 2, spring 3, urceolus 4, shear pin 5, inner sliding sleeve 6, the inner sliding sleeve sealing device is formed, body 1 inside has pressure transmission hole and urceolus 4 to be interconnected, lead to the hole site one end external surface has limited step, inner sliding sleeve 6 one ends place on the step, other end and body 1, place spring 3 in the cavity that baffle ring 2 and urceolus 4 form, several through holes are arranged on the urceolus 4, uniform and the built-in pin 5 of its small through hole is inner sliding sleeve 6 fixedly, the inner sliding sleeve sealing device is a sealing ring, and inner sliding sleeve 6 surfaces externally and internallies respectively have two grooves near the end, and inside and outside groove location is interlaced to be opened, place sealing ring 7 in the groove, make inner sliding sleeve 6 external surfaces and urceolus 4 sealings, its inner surface and body 1 form sealing, and small through hole is at least 3 on the urceolus, large through-hole is a circulation port, is at least 1; Welding between baffle ring 2 and body 1, the urceolus 4, body 1 is threaded with urceolus 4.
Operating principle of the present utility model is: during setting of casing the utility model is connected on the casing string, fluid pressure is passed to inner sliding sleeve 6 by the pressure transmission hole on the body 1 in the casing string, when pressure reaches preset value, shear pin 5 is cut short, and inner sliding sleeve 6 compression springs 3 expose the circulation port on the urceolus 4, make the inside and outside connection of pipe, carry out the cementing well construction, after construction is finished, under the effect of spring 3, promote inner sliding sleeve 6 and close circulation port.
Claims (5)
1. the formula that automatically resets hydraulic pressure sizing collar, it is characterized in that: mainly by body (1), baffle ring (2), spring (3), urceolus (4), shear pin (5), inner sliding sleeve (6), the inner sliding sleeve sealing device is formed, body (1) inside has pressure transmission hole and urceolus (4) to be interconnected, lead to the hole site one end external surface has limited step, inner sliding sleeve (6) one ends place on the step, other end and body (1), place spring (3) in the cavity that baffle ring (2) and urceolus (4) form, urceolus has several through holes on (4), and the uniform and built-in pin of its small through hole (5) is inner sliding sleeve (6) fixedly.
2. the formula hydraulic pressure sizing collar that automatically resets according to claim 1, it is characterized in that: the inner sliding sleeve sealing device is a sealing ring, inner sliding sleeve (6) surfaces externally and internally respectively has two grooves near the end, interlaced the opening in position of inside and outside groove, place sealing ring (7) in the groove, make the sealing of inner sliding sleeve (6) external surface and urceolus (4), its inner surface and body (1) form sealing.
3. the formula hydraulic pressure sizing collar that automatically resets according to claim 1, it is characterized in that: small through hole is at least 3 on the urceolus, and large through-hole is a circulation port, is at least 1.
4. the formula hydraulic pressure sizing collar that automatically resets according to claim 1 is characterized in that: welding between baffle ring (2) and body (1), the urceolus (4).
5. the formula hydraulic pressure sizing collar that automatically resets according to claim 1 is characterized in that: body (1) is threaded with urceolus (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201775854U CN201310318Y (en) | 2008-11-27 | 2008-11-27 | Automatic-reset hydraulic grading hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201775854U CN201310318Y (en) | 2008-11-27 | 2008-11-27 | Automatic-reset hydraulic grading hoop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310318Y true CN201310318Y (en) | 2009-09-16 |
Family
ID=41107572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201775854U Expired - Fee Related CN201310318Y (en) | 2008-11-27 | 2008-11-27 | Automatic-reset hydraulic grading hoop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310318Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563957A (en) * | 2014-12-24 | 2015-04-29 | 中国石油天然气集团公司 | Horizontal well cementing sleeve and method for measuring well cementing quality |
| CN110080683A (en) * | 2019-03-09 | 2019-08-02 | 西安物华巨能爆破器材有限责任公司 | A kind of hydraulic adjustable delay boring device |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
-
2008
- 2008-11-27 CN CNU2008201775854U patent/CN201310318Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563957A (en) * | 2014-12-24 | 2015-04-29 | 中国石油天然气集团公司 | Horizontal well cementing sleeve and method for measuring well cementing quality |
| CN104563957B (en) * | 2014-12-24 | 2017-07-07 | 中国石油天然气集团公司 | Horizontal cementing sleeve pipe and the method for surveying cementing quality |
| CN110080683A (en) * | 2019-03-09 | 2019-08-02 | 西安物华巨能爆破器材有限责任公司 | A kind of hydraulic adjustable delay boring device |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
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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: 20090916 Termination date: 20141127 |
|
| EXPY | Termination of patent right or utility model |