CN201738871U - Anti-rotating well cementation rubber stopper with self-locking mechanism - Google Patents
Anti-rotating well cementation rubber stopper with self-locking mechanism Download PDFInfo
- Publication number
- CN201738871U CN201738871U CN2010202275824U CN201020227582U CN201738871U CN 201738871 U CN201738871 U CN 201738871U CN 2010202275824 U CN2010202275824 U CN 2010202275824U CN 201020227582 U CN201020227582 U CN 201020227582U CN 201738871 U CN201738871 U CN 201738871U
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- plug
- self
- rubber stopper
- locking mechanism
- locking
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Abstract
The utility model provides an anti-rotating well cementation rubber stopper with a self-locking mechanism, relating to the technical field of manufacture of oil and gas borehole operation tools, and comprising a rubber stopper, a guide head, a sealing ring and a self-locking ring, wherein the guide head and the rubber stopper are connected by screw thread; the self-locking ring is arranged at the front end of the rubber stopper; and a touch and press body consists of a touch and press base, a check box, an anti-rotating toothed holder and a check valve. By adopting the anti-rotating tooth design, the utility model provides an anti-rotating well cementation rubber stopper with the self-locking mechanism, which solves the problem of a solid sleeve as cement slurry outside the sleeve backflows the sleeve caused by failure of a floating collar, and has the characteristics that the rubber stopper body can not rotate along with a drill bit when being drilled, the alignment of the rubber stopper and the touch and press base is good, and the self-locking reliability is high.
Description
Technical field:
A kind of anti-rotation cementing plug with self-locking mechanism is used for the well cementation after the drilling well, relates to the manufacturing technology field of the underground work instrument of cementing the well behind the oil and gas well drilling.
Background technology:
After the oil and gas well drilling construction is finished, for the borehole wall is crept into, reinforced to the continuation safety that guarantees the back, or the safety that guarantees lower part borehole is crept into, reach the purpose in later stage drilling well packing oil, gas and aquifer, and the formation testing by layer of implementing after the assurance completion and in whole recovery process rational production of hydrocarbons, all to implement the construction of setting of casing and cement injection well cementation; Being lowered to and implementing cementing behind the sleeve pipe is that cement paste is injected in sleeve pipe, and make cement paste through shaft bottom casing shoe place along returning the precalculated position on the annular space, make the annular space filling concrete slurry between the sleeve pipe and the borehole wall, reach the purpose of well cementation; In the construction of implementing cement injection, when the cement paste quantity that injects reaches designing requirement, in order to isolate displacement fluid and cement paste effectively, and scrape cement paste on the internal surface of sleeve pipe, finish simultaneously with manage string on the float collar task of cooperating, just plug need be pressed in the well, reach the effect that control replaces the drilling well liquid measure;
For mixed scurrying takes place with drilling fluid in the cement paste that prevents to inject in advance in sleeve pipe, sometimes also after annotating prepad fluid, add a bottom plug, bottom plug be one hollow, the plug that has only one deck barrier film, its effect is to stop cement paste to be scurried with drilling fluid is mixed in sleeve pipe, when cement paste is full of sleeve pipe, bottom plug will be sitting on the float collar, when pressure reaches a less definite value, barrier film in the bottom plug is destroyed, at this moment passage just has been opened, and the passage of opening can guarantee normally carrying out of follow-up construction;
The problem of the cementing plug that adopts is at present: present flat cementing plug, the float collar upper surface supporting with plug also is plane structure, when follow-up wellbore construction, need at first to bore well cementation annexes such as the plug that stays when falling to cement the well and float collar, when boring well cementation annex such as plug and float collar, because it is unfixing to stay the plug of down-hole, so plug can rotate together along with drill bit, like this, bore plug and just need expend more time, and cause the increase of drilling cost; And existing plug is relatively poor to neutrality, plug and impacting seat are not easy centering and seal, after well cementation replaces plug, because the fluid density outside the sleeve pipe is greater than fluid density in the sleeve pipe, therefore the outer liquid column hydrostatic pressure of pipe is bigger, in case float collar lost efficacy, the outer cement paste of sleeve pipe will return in the sleeve pipe because of the effect of head of liquid, cause the major accident of solid cannula, so construction risk is very big.
Summary of the invention
The content of utility model:
The purpose of this utility model is at prior art problems, adopts the design of antiturning pitch, but provides self-locking after a kind of bruising and the anti-rotation cementing plug of the band self-locking mechanism that plug can not rotate with drill bit can realize spudding in the time.
The utility model is achieved in that the utility model comprises rubber plug body and bruising body, it is characterized in that: described rubber plug body comprises plug, seeker, sealing ring and self-locking ring, seeker and plug are by screwed connection, and self-locking ring is arranged on the front end of plug; The bruising body comprises impacting seat, retaining box, anti-rotation toothholder, one way valve and housing, and impacting seat is arranged in the housing, and retaining box, antiturning pitch are arranged in the impacting seat;
Described front end at plug is provided with sealing ring;
Described impacting seat lower end is provided with draw-in groove;
Also be provided with draw-in groove between the cylindrical of described impacting seat and the housing;
Described seeker and plug are separated structures, can also be whole structures;
When assembly glue cock body and bruising body, seeker is connected with plug by screw thread, also can be with seeker and the as a whole structure of plug design, and self-locking ring is enclosed within on the seeker, anti-rotation toothholder and retaining box are packed into from the lower end of impacting seat, be fixed in the impacting seat by the draw-in groove that is arranged on the impacting seat lower end, pack in the housing with impacting seat then; Since fixing between the cylindrical of impacting seat and the housing by draw-in groove, can not rotate mutually, and draw-in groove is fixed the anti-rotation toothholder, so the anti-rotation toothholder can prevent the rotation of plug when creeping into;
The utility model advantage is: even float collar lost efficacy, because the retaining box that is provided with has certain barrier effect to the self-locking ring on the plug, stop self-locking ring to move up, simultaneously because the self-locking ring internal diameter is littler than the seeker external diameter that is connected on the plug, thereby just stoped seeker and plug to move up, the outer cement grout column pressure of pipe also just can not make on the plug and move, and has finally stoped the backflow of the outer cement paste of sleeve pipe, greatly reduces construction risk; The public tooth of anti-rotation that is arranged on the seeker front end is realized engagement with the female tooth of anti-rotation that is arranged on the anti-rotation toothholder, reach the purpose that prevents that plug from rotating, when having overcome the brill rubber plug body, the problem that rubber plug body rotates with drill bit, have the good of plug and impacting seat, the characteristics that the self-locking reliability is higher to neutrality.
Description of drawings:
Fig. 1 is the generalized section of the utility model rubber plug body.
Fig. 2 is the generalized section of bruising body of the present utility model.
Fig. 3 is the structural representation after the utility model rubber plug body and the assembling of bruising body.
The specific embodiment:
Provide embodiment of the present utility model below in conjunction with accompanying drawing:
Embodiment 1: the utility model comprises rubber plug body and bruising body, and described rubber plug body comprises plug 1, seeker 2, sealing ring 3 and self-locking ring 4, and seeker 2 and plug 1 are by screwed connection, and self-locking ring 4 is arranged on the front end of plug 1; Front end at plug 1 also is provided with sealing ring 3; The bruising body comprises impacting seat 5, retaining box 6, anti-rotation toothholder 7, one way valve 8 and housing 9, and impacting seat 5 is arranged in the housing 9, and retaining box 6, anti-rotation toothholder 7 are arranged in the impacting seat 5, is provided with draw-in groove in impacting seat 5 lower ends;
Embodiment 2: when assembly glue cock body and bruising body, seeker 2 is connected with plug 1 by screw thread, and self-locking ring 4 is enclosed within on the seeker 2, anti-rotation toothholder 7 and retaining box 6 are packed into from the lower end of impacting seat 5, be fixed in the impacting seat 5 by the draw-in groove that is arranged on impacting seat 5 lower ends, pack in the housing 9 with impacting seat 5 then; Since fixing between the cylindrical of impacting seat 5 and the housing 9 by draw-in groove, can not rotate mutually, and draw-in groove is fixed anti-rotation toothholder 7, so anti-rotation toothholder 7 can prevent the rotation of plug when creeping into;
Embodiment 3: when implementing to creep into, when the descending guiding by seeker 2 of plug, when making self-locking ring 4 clamp-on retaining box 6, just reached the self-locking purpose; Because the barrier effect of 6 pairs of self-locking rings 4 of retaining box, therefore, even float collar lost efficacy, the outer cement grout column pressure of pipe can not make on the plug and move; Also realized sealing between seeker 2 and the retaining box 6 simultaneously, avoided liquid backflow in the sleeve pipe, construction risk is greatly reduced by sealing ring 3; After the bruising, the public tooth 10 of the anti-rotation of seeker 2 front ends is realized engagement with the female tooth 11 of anti-rotation that is arranged on the anti-rotation toothholder 7, reaches the purpose that prevents that plug from rotating, and has overcome drill bit when boring rubber plug body, therefore the situation that rubber plug body rotates with drill bit can not increase extra drilling time;
Embodiment 4: use at the scene, during the tube connector string, must supporting float collar be connected the top of other float collar so that when constructing the utility model can with supporting float collar bruising; During cementing operation, pump into cement paste and throw in the plug 1 that assembles afterwards again, it is descending to use mud to continue to replace plug 1, realizes bruisings until plug 1 arrival impacting seat 5; After the bruising, the self-locking ring 4 of plug 1 front end is clamp-oned in the retaining box 6, because the barrier effect of 6 pairs of self-locking rings 4 of retaining box, the outer cement grout column pressure of pipe can not move top on the plug 1, has realized the purpose of self-locking; Also be provided with sealing ring between seeker 2 and the impacting seat 5, therefore can realize sealing, play the purpose of the cement paste backflow that prevents in the sleeve pipe, reduce the effect of construction risk; After the bruising, the public tooth 10 of anti-rotation that is arranged on seeker 2 front ends is realized engagement with antiturning pitch 11, therefore can guarantee drill bit when boring plug 1, and plug can not rotate with drill bit.
Claims (5)
1. the anti-rotation cementing plug with self-locking mechanism comprises rubber plug body and bruising body, and it is characterized in that: described rubber plug body comprises plug, seeker, sealing ring and self-locking ring, and seeker and plug are by screwed connection, and self-locking ring is arranged on the front end of plug; The bruising body comprises impacting seat, retaining box, anti-rotation toothholder, one way valve and housing, and impacting seat is arranged in the housing, and retaining box, antiturning pitch are arranged in the impacting seat.
2. the anti-rotation cementing plug of band self-locking mechanism according to claim 1 is characterized in that: the front end at described plug is provided with sealing ring.
3. the anti-rotation cementing plug of band self-locking mechanism according to claim 1 is characterized in that: described impacting seat lower end is provided with draw-in groove.
4. the anti-rotation cementing plug of band self-locking mechanism according to claim 1 is characterized in that: also be provided with draw-in groove between the cylindrical of described impacting seat and housing.
5. the anti-rotation cementing plug of band self-locking mechanism according to claim 1 is characterized in that: described seeker and plug are separated structures, can also be whole structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202275824U CN201738871U (en) | 2010-06-17 | 2010-06-17 | Anti-rotating well cementation rubber stopper with self-locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202275824U CN201738871U (en) | 2010-06-17 | 2010-06-17 | Anti-rotating well cementation rubber stopper with self-locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738871U true CN201738871U (en) | 2011-02-09 |
Family
ID=43554149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202275824U Expired - Lifetime CN201738871U (en) | 2010-06-17 | 2010-06-17 | Anti-rotating well cementation rubber stopper with self-locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201738871U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071905A (en) * | 2011-02-18 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotation self-locking rubber plug used for well cementation |
| CN102134990A (en) * | 2011-02-25 | 2011-07-27 | 中国石油集团川庆钻探工程有限公司 | Cement head magnetic induction rubber plug indicator |
| CN103993855A (en) * | 2014-05-07 | 2014-08-20 | 中国石油化工集团公司 | Well drilling and well cementation mud-backflow-preventing device |
| CN104179473A (en) * | 2013-05-28 | 2014-12-03 | 中国石油化工股份有限公司 | Anti-falling article floating hoop |
| CN106837238A (en) * | 2016-12-21 | 2017-06-13 | 中国石油天然气股份有限公司 | A kind of self-locking plug |
| CN107605426A (en) * | 2017-08-31 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of double containment bruising device |
-
2010
- 2010-06-17 CN CN2010202275824U patent/CN201738871U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071905A (en) * | 2011-02-18 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotation self-locking rubber plug used for well cementation |
| CN102134990A (en) * | 2011-02-25 | 2011-07-27 | 中国石油集团川庆钻探工程有限公司 | Cement head magnetic induction rubber plug indicator |
| CN102134990B (en) * | 2011-02-25 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司 | Cement head magnetic induction rubber plug indicator |
| CN104179473A (en) * | 2013-05-28 | 2014-12-03 | 中国石油化工股份有限公司 | Anti-falling article floating hoop |
| CN104179473B (en) * | 2013-05-28 | 2016-09-21 | 中国石油化工股份有限公司 | Junk prevention float collar |
| CN103993855A (en) * | 2014-05-07 | 2014-08-20 | 中国石油化工集团公司 | Well drilling and well cementation mud-backflow-preventing device |
| CN106837238A (en) * | 2016-12-21 | 2017-06-13 | 中国石油天然气股份有限公司 | A kind of self-locking plug |
| CN106837238B (en) * | 2016-12-21 | 2019-05-07 | 中国石油天然气股份有限公司 | A kind of self-locking rubber plug |
| CN107605426A (en) * | 2017-08-31 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of double containment bruising device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |