CN202273642U - Well cementation rubber plug - Google Patents
Well cementation rubber plug Download PDFInfo
- Publication number
- CN202273642U CN202273642U CN 201120419655 CN201120419655U CN202273642U CN 202273642 U CN202273642 U CN 202273642U CN 201120419655 CN201120419655 CN 201120419655 CN 201120419655 U CN201120419655 U CN 201120419655U CN 202273642 U CN202273642 U CN 202273642U
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- wall
- plug
- pipe nipple
- joint
- fixed together
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- Expired - Lifetime
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Abstract
The utility model relates to the technical field of petroleum well completion cementation tools, in particular to a well cementation rubber plug, which comprises an upper joint, a connecting short section, a body, a conversion joint, rubber plug wings and a float collar joint. The inner wall of the lower end of the upper joint is fixedly connected with the outer wall of the upper end of the connecting short section, the inner wall of the lower portion of the connecting short section is fixedly connected with the outer wall of the upper portion of the body, the outer wall of the lower end of the body is fixedly connected with the inner wall of the upper portion of conversion joint, the outer wall of the lower portion of the conversion joint is fixedly connected with the inner wall of the upper portion of the float collar joint, at least two groups of rubber plug wings are fixedly sleeved on the outer side of the middle portion of the body from top to bottom, and the inner wall of the upper portion of the body is in a shape of a frustum with a wide top and a narrow bottom. The well cementation rubber plug is reasonable and compact in structure and convenient to use, respectively arranges cutting pressure in different grades through an upper cutting pin and a lower cutting pin, can guarantee normal use of tools under unforeseen circumstances, can adapt to sleeve pipes in different sizes, and can effectively improve displacement efficiency and well cementation quality of tail pipe well cementation cement slurry.
Description
Technical field
the utility model relates to the solid completion tool technical field of oil, is a kind of cementing plug.
Background technology
tail tube hanging well cementation is comparatively general a kind of in the completion mode, helps saving the drilling well duration, practices thrift drilling cost.The general way of tail tube hanging well cementation is to adopt tail pipe running tool, tail pipe string, float collar to cooperate cementing well.Because there are reducing in tail pipe running tool and tail pipe string internal diameter, if use the drilling rod plug to replace cement paste separately, displacement efficiency is relatively poor.
Summary of the invention
the utility model provides a kind of cementing plug, has overcome the deficiency of above-mentioned prior art, and it can effectively solve independent use drilling rod plug and replace cement paste, the problem that displacement efficiency is relatively poor.
The technical scheme of
the utility model realizes through following measure: a kind of cementing plug comprises top connection, connects pipe nipple, body, crossover sub, the plug wing and float collar joint; The lower end inwall of top connection is fixed together with the upper end outer wall that is connected pipe nipple; The lower inner wall and the upper part of body outer wall that connect pipe nipple are fixed together; The lower end outer wall of body and the upper inside wall of crossover sub are fixed together; The bottom outer wall of crossover sub and the upper inside wall of float collar plug are fixed together; The plug wing of at least two groups is equipped with in the outside, the middle part of body fixed cover from top to bottom, and the upper part of body inwall is taper type wide at the top and narrow at the bottom, and there are internal thread or external screw thread in the upper end of top connection; The bottom and the upper part of body that connect pipe nipple are fixed together through shear pin under at least one, and the middle part inwall of body has the ring-shaped step of protrusion.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
The lower end of
above-mentioned top connection can be fixed together through shear pin at least one with the upper end that is connected pipe nipple.
The top connection that
above-mentioned goes up shear pin below can be equipped with sealing ring with being connected between the pipe nipple.
Between the connection pipe nipple of
above-mentioned shear pin down top and the body sealing ring can be installed.
above-mentioned plug wing diameter from top to bottom can reduce gradually.
The lower end of
above-mentioned float collar plug can be circular-arc.
the utility model reasonable and compact in structure; Easy to use; The pressure of cutting off of different stage is set respectively through last shear pin, following shear pin; Can guarantee the normal use of instrument under the fortuitous event, it can adapt to the sleeve pipe of different size, can effectively improve drilling liner cementing displacement efficiency of cement slurry and cementing quality.
Description of drawings
accompanying drawing 1 is looked the half section structural representation for the master of the utility model most preferred embodiment.
Coding in
accompanying drawing is respectively: 1 for top connection, and 2 for connecting pipe nipple, and 3 be body, and 4 be crossover sub, and 5 is the float collar plug, and 6 is the plug wing, and 7 is sealing ring, and 8 is last shear pin, 9 be under shear pin, 10 is ring-shaped step.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description 1, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, this cementing plug comprises top connection 1, connects pipe nipple 2, body 3, crossover sub 4, the plug wing 6 and float collar joint 5; The lower end inwall of top connection 1 is fixed together with the upper end outer wall that is connected pipe nipple 2; Connecting the lower inner wall of pipe nipple 2 and the external wall of upper portion of body 3 is fixed together; The lower end outer wall of body 3 and the upper inside wall of crossover sub 4 are fixed together; The bottom outer wall of crossover sub 4 and the upper inside wall of float collar plug 5 are fixed together; The plug wing 6 of at least two groups is equipped with in the outside, the middle part of body 3 fixed cover from top to bottom, and the upper inside wall of body 3 is taper type wide at the top and narrow at the bottom, and there are internal thread or external screw thread in the upper end of top connection 1; Connect the bottom of pipe nipple 2 and the top of body 3 and be fixed together through shear pin 9 under at least one, the middle part inwall of body 3 has the ring-shaped step 10 of protrusion.Ring-shaped step 10 circle diameters can match with drilling rod plug head rod portion external diameter.
Can according to actual needs above-mentioned cementing plug be done further to optimize or/and improve:
Shown in accompanying drawing 1, the lower end of top connection 1 is fixed together through shear pin at least one 8 with the upper end that is connected pipe nipple 2
.Last shear pin 8 and following shear pin 9 can be provided with the pressure of cutting off of different stage respectively, can guarantee the normal use of instrument under the fortuitous event like this.
are equipped with sealing ring 7 between the connection pipe nipple 2 of following shear pin 9 tops and the body 3 shown in accompanying drawing 1.
shown in accompanying drawing 1, the top connection 1 of last shear pin 8 belows is equipped with sealing ring 7 with being connected between the pipe nipple 2.
Shown in accompanying drawing 1, the plug wing 6 diameter from top to bottom reduces gradually
.
shown in accompanying drawing 1, the lower end of float collar plug 5 is circular-arc.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of
the utility model most preferred embodiment: the utility model is connected with the tail pipe running tool, after tail pipe is sent into and put in place, cements the well through running tool internal water flooding mud; After cementing finishes, replace cement at the inner drilling rod plug of throwing of tail pipe running tool, when the drilling rod plug marches to body 3 inner annular steps 10 places; Produce bruising for the first time, the drilling rod plug stops descending, and begins to build the pressure to descending shear pin 9 to cut off; Drive the utility model and drilling rod plug and come downwards to float collar place, tail pipe bottom together, accomplish bruising for the second time, finish for slurry; If following shear pin 9 can't be cut off for some reason; Can strengthen the pressure that builds the pressure, cut off shear pin 8, and make the utility model and drilling rod plug descending.
Claims (9)
1. a cementing plug is characterized in that comprising top connection, connects pipe nipple, body, crossover sub, the plug wing and float collar joint; The lower end inwall of top connection is fixed together with the upper end outer wall that is connected pipe nipple; The lower inner wall and the upper part of body outer wall that connect pipe nipple are fixed together; The lower end outer wall of body and the upper inside wall of crossover sub are fixed together; The bottom outer wall of crossover sub and the upper inside wall of float collar plug are fixed together; The plug wing of at least two groups is equipped with in the outside, the middle part of body fixed cover from top to bottom, and the upper part of body inwall is taper type wide at the top and narrow at the bottom, and there are internal thread or external screw thread in the upper end of top connection; The bottom and the upper part of body that connect pipe nipple are fixed together through shear pin under at least one, and the middle part inwall of body has the ring-shaped step of protrusion.
2. cementing plug according to claim 1 is characterized in that the lower end of top connection is fixed together through shear pin at least one with the upper end that is connected pipe nipple.
3. cementing plug according to claim 2, the top connection that it is characterized in that shear pin below are equipped with sealing ring with being connected between the pipe nipple.
4. according to claim 1 or 2 or 3 described cementing plugs, between the connection pipe nipple of shear pin top and the body sealing ring is installed under it is characterized in that.
5. according to claim 1 or 2 or 3 described cementing plugs, it is characterized in that the plug wing from top to bottom diameter reduce gradually.
6. cementing plug according to claim 4, it is characterized in that the plug wing from top to bottom diameter reduce gradually.
7. according to claim 1 or 2 or 3 described cementing plugs, it is characterized in that the lower end of float collar plug is circular-arc.
8. cementing plug according to claim 4 is characterized in that the lower end of float collar plug is circular-arc.
9. cementing plug according to claim 5 is characterized in that the lower end of float collar plug is circular-arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120419655 CN202273642U (en) | 2011-10-29 | 2011-10-29 | Well cementation rubber plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120419655 CN202273642U (en) | 2011-10-29 | 2011-10-29 | Well cementation rubber plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202273642U true CN202273642U (en) | 2012-06-13 |
Family
ID=46194006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120419655 Expired - Lifetime CN202273642U (en) | 2011-10-29 | 2011-10-29 | Well cementation rubber plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202273642U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420859A (en) * | 2013-09-11 | 2015-03-18 | 国际壳牌研究有限公司 | Method To Underdisplace Hydraulic Fractures In Horizontal Or Deviated Well |
| CN107829707A (en) * | 2017-11-21 | 2018-03-23 | 中国石油集团西部钻探工程有限公司 | Drilling liner cementing tail pipe plug assembly |
| CN114109302A (en) * | 2021-11-24 | 2022-03-01 | 中石化石油工程技术服务有限公司 | Permeable composite rubber plug for well cementation and use method |
-
2011
- 2011-10-29 CN CN 201120419655 patent/CN202273642U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420859A (en) * | 2013-09-11 | 2015-03-18 | 国际壳牌研究有限公司 | Method To Underdisplace Hydraulic Fractures In Horizontal Or Deviated Well |
| CN104420859B (en) * | 2013-09-11 | 2019-08-06 | 国际壳牌研究有限公司 | Drive method of the proppant moved in horizontal well or inclined shaft into fluid power fracturing fracture |
| CN107829707A (en) * | 2017-11-21 | 2018-03-23 | 中国石油集团西部钻探工程有限公司 | Drilling liner cementing tail pipe plug assembly |
| CN114109302A (en) * | 2021-11-24 | 2022-03-01 | 中石化石油工程技术服务有限公司 | Permeable composite rubber plug for well cementation and use method |
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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 |
Granted publication date: 20120613 |
|
| CX01 | Expiry of patent term |