CN202228044U - Spiral casing scraper - Google Patents
Spiral casing scraper Download PDFInfo
- Publication number
- CN202228044U CN202228044U CN 201120389266 CN201120389266U CN202228044U CN 202228044 U CN202228044 U CN 202228044U CN 201120389266 CN201120389266 CN 201120389266 CN 201120389266 U CN201120389266 U CN 201120389266U CN 202228044 U CN202228044 U CN 202228044U
- Authority
- CN
- China
- Prior art keywords
- jointing
- spiral casing
- top connection
- lower contact
- doctor blade
- 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 - Lifetime
Links
- 238000007790 scraping Methods 0.000 claims abstract description 37
- 238000004140 cleaning Methods 0.000 claims description 16
- 230000008602 contraction Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- Cleaning In General (AREA)
Abstract
The utility model relates to the technical field of casing scrapers, in particular to a spiral casing scraper; the scraper tube comprises an upper joint, a body, a scraper tube and a lower joint; the middle part of the inner side of the upper joint is fixedly connected with the upper end of the outer side of the body; the middle part of the inner side of the lower joint is fixedly connected with the lower end of the outer side of the body; the body between the upper joint and the lower joint is sleeved with a scraping pipe capable of radially contracting, and the scraping pipe is provided with scraping teeth. The utility model has reasonable and compact structure and convenient use; the outer diameter of the middle part of the elastic scraping blade is reduced through the axial extension of the elastic scraping blade, so that the elastic scraping blade can be suitable for scraping sleeves with different inner diameters, and the universality is strong; meanwhile, the annular scraping teeth which are downward are arranged on the outer side of the middle part of the elastic scraping blade, so that the inner wall of the sleeve can be scraped annularly, and the scraping effect is better.
Description
Technical field
the utility model relates to the casing scraper technical field, is a kind of spiral casing scraper.
Background technology
After
oil gas well cementing operation bored the ash disposal plug, ash plug section internal surface of sleeve pipe had cement residual usually, causes this section internal surface of sleeve pipe rough regular, causes adverse effect for follow-up completion practice; When bridging plug perhaps carries out staged fracturing down in certain section sleeve pipe in addition; Also need carry out the scraping cleaning operation to the inwall of operation casing section; This just needs to use scraper in a kind of sleeve pipe, and common casing scraper has rubber tube scraper and spring scraper, and conventional spring scraper generally all is to utilize several to have spring-supported odontexesis that internal surface of sleeve pipe is carried out scraping; But the odontexesis external diameter of the spring scraper of same model is fixed; No matter how spring is compressed, and the scraper of the type can only just can scrape full circle to the casing inner diameter that equates with its odontexesis external diameter, and versatility is poor; The odontexesis of this scraper can't scrape the circle of a completion all the time simultaneously, when this just causes actual scraping, formation be a kind of line scraping, make the internal surface of sleeve pipe scraping not thorough.
Summary of the invention
the utility model provides a kind of spiral casing scraper, has overcome the deficiency of above-mentioned prior art, and it is poor that it can effectively solve spring scraper versatility, the halfway problem of scraping.
The technical scheme of
the utility model realizes through following measure: a kind of spiral casing scraper comprises top connection, body, pipe cleaning and lower contact; The middle inside of top connection and the outer upper end of body are fixed together; The lower end, the outside of the middle inside of lower contact and body is fixed together; On the body between top connection and the lower contact, be set with the pipe cleaning of ability radial contraction, scraping teeth is arranged on pipe cleaning.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
above-mentioned pipe cleaning can comprise jointing, following jointing, elastic doctor blade; Between last jointing and following jointing, be fixedly connected with at least two circle distribution and elastic doctor blade that can axial stretching, elastic doctor blade is low arc in high both sides, middle part, and the scraping teeth that is directed downwards is arranged at the middle part of elastic doctor blade; Linking together of the body of last jointing and top connection below; The body of following jointing and lower contact top links together.
above-mentioned elastic doctor blade in the shape of a spiral the shape fixed interval between last jointing and following jointing.
above-mentioned scraping teeth can be in the form of a ring.
above-mentioned elastic doctor blade that can be fixedly connected with eight circle distribution between jointing and the following jointing of going up.
bottom of above-mentioned top connection and the top of lower contact respectively and can form between the body annular upper cavity and lower chamber; Last jointing is installed in the bottom of upper cavity, and following jointing is installed in the top of lower chamber; On last jointing and play jointing, vertical slotted hole is arranged respectively, and on the corresponding body in the bottom of each vertical slotted hole locating hole is arranged respectively, last jointing is through vertical slotted hole, locating hole and stop and pin and body-fixed links together; Following jointing is through vertical slotted hole, locating hole and stop that pin and body-fixed link together.
middle inside of above-mentioned top connection and the outer upper end of body can be fixed together and be installed with check pin through screw thread; The lower end, the outside of the middle inside of lower contact and body is fixed together and is installed with check pin through screw thread.
Conical internal thread can be arranged at the top of
above-mentioned top connection, in the bottom of lower contact conical internal thread is arranged.
the utility model reasonable and compact in structure, easy to use; Through the axial elongation of elastic doctor blade, make the reduced diameter at the middle part of elastic doctor blade, thereby applicable to the scraping of the sleeve pipe of different inner diameters, highly versatile; The also direction scraping teeth down of annular is arranged in the outside, middle part of elastic doctor blade simultaneously, can carry out the scraping of annular, make the better effects if of scraping internal surface of sleeve pipe.
Description of drawings
accompanying drawing 1 is looked the half section structural representation for the master of the utility model most preferred embodiment.
accompanying drawing 2 is the main TV structure sketch map of pipe cleaning in the accompanying drawing 1.
accompanying drawing 3 is the plan structure sketch map of the elastic doctor blade of accompanying drawing 2.
accompanying drawing 4 is the plan structure sketch map of elastic doctor blade when radial contraction of accompanying drawing 2.
Coding in
accompanying drawing is respectively: 1 is top connection, and 2 is body, and 3 are lower contact, and 4 is scraping teeth; 5 is last jointing, and 6 are following jointing, and 7 is elastic doctor blade, and 8 is upper cavity; 9 is lower chamber, and 10 is vertical slotted hole, and 11 for stopping pin, and 12 is check pin.
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 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 spiral casing scraper comprises top connection 1, body 2, pipe cleaning and lower contact 3; The outer upper end of the middle inside of top connection 1 and body 2 is fixed together; The lower end, the outside of the middle inside of lower contact 3 and body 2 is fixed together; On the body 2 between top connection 1 and the lower contact 3, be set with the pipe cleaning of ability radial contraction, scraping teeth 4 is arranged on pipe cleaning.Carry out scraping through 4 pairs of internal surface of sleeve pipe of scraping teeth, but pipe cleaning radial contraction again, within the specific limits applicable to the sleeve pipe of different inner diameters, highly versatile.
Can according to actual needs above-mentioned spiral casing scraper be done further to optimize or/and improve:
like accompanying drawing 2,3, shown in 4, pipe cleaning comprises jointing 5, following jointing 6, elastic doctor blade 7; Between last jointing 5 and following jointing 6, be fixedly connected with at least two circle distribution and elastic doctor blade 7 that can axial stretching, elastic doctor blade 7 is low arc in high both sides, middle part, and the scraping teeth 4 that is directed downwards is arranged at the middle part of elastic doctor blade 7; Last jointing 5 links together with the body 2 of top connection 1 below; Following jointing 6 links together with the body 2 of lower contact 3 tops.Through changing the axial length of elastic doctor blade 7, make elastic doctor blade 7 can reach the effect of radial contraction.
like accompanying drawing 1, shown in 2, elastic doctor blade 7 in the shape of a spiral the shape fixed interval between last jointing 5 and following jointing 6.
like accompanying drawing 3, shown in 4, scraping teeth 4 in the form of a ring.Make the scraping of internal surface of sleeve pipe more thorough like this.
are fixedly connected with the elastic doctor blade 7 of eight circle distribution like accompanying drawing 3, shown in 4 between last jointing 5 and following jointing 6.
are shown in accompanying drawing 1, on the top of the bottom of top connection 1 and lower contact 3 respectively and form the upper cavity 8 and lower chamber 9 of annular between the body 2; Last jointing 5 is installed in the bottom of upper cavity 8, and following jointing 6 is installed in the top of lower chamber 9; On last jointing 5 and following jointing 6, vertical slotted hole 10 is arranged respectively; With on the corresponding body 2 in the bottom of each vertical slotted hole 10 locating hole is arranged respectively, last jointing 5 is through vertical slotted hole 10, locating hole and stop that pin 1 and body 2 are fixed together; Following jointing 6 is through vertical slotted hole 10, locating hole and stop that pin 11 and body 2 are fixed together.Can carry out radially spacing through upper cavity 8 and 9 pairs of pipes cleaning of lower chamber like this; Simultaneously through regulating vertical slotted hole 10 and the length that stops that pin 11 link positions are regulated elastic doctor blade 7 on jointing 5 and the following jointing 6; Stop that simultaneously pin 11 limits its axially-movable distance, be unlikely to make jointing 5 and following jointing 6 in upper cavity 8 and lower chamber 9, to come off.
shown in accompanying drawing 1, the outer upper end of the middle inside of top connection 1 and body 2 is fixed together and is installed with check pin 12 through screw thread; The lower end, the outside of the middle inside of lower contact 3 and body 2 is fixed together and is installed with check pin 12 through screw thread.Be convenient to the installation and removal of top connection 1 and lower contact 3 like this.
shown in accompanying drawing 1, have conical internal thread on the top of top connection 1, in the bottom of lower contact 3 conical internal thread are arranged.Being convenient to the utility model like this is connected with other devices.
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: at first with the utility model with send into drilling tool and be connected, the direction of guaranteeing scraping teeth 4 is down; Secondly jointing 5 and the link position of following jointing 6 with body 2 are gone up in adjustment, thereby the horizontal width of adjustment elastic doctor blade 7 middle part scraping teeth 4 is adjusted to it corresponding with casing inner diameter; Then with the utility model be lowered into appointment need the well section of scraping the time, lift up and down repeatedly and for several times can accomplish scraping.
Claims (10)
1. a spiral casing scraper is characterized in that comprising top connection, body, pipe cleaning and lower contact; The middle inside of top connection and the outer upper end of body are fixed together; The lower end, the outside of the middle inside of lower contact and body is fixed together; On the body between top connection and the lower contact, be set with the pipe cleaning of ability radial contraction, scraping teeth is arranged on pipe cleaning.
2. spiral casing scraper according to claim 1 is characterized in that pipe cleaning comprises jointing, following jointing, elastic doctor blade; Between last jointing and following jointing, be fixedly connected with at least two circle distribution and elastic doctor blade that can axial stretching, elastic doctor blade is low arc in high both sides, middle part, and the scraping teeth that is directed downwards is arranged at the middle part of elastic doctor blade; Linking together of the body of last jointing and top connection below; The body of following jointing and lower contact top links together.
3. spiral casing scraper according to claim 2, it is characterized in that elastic doctor blade in the shape of a spiral the shape fixed interval between last jointing and following jointing.
4. spiral casing scraper according to claim 3 is characterized in that scraping teeth in the form of a ring.
5. spiral casing scraper according to claim 4 is characterized in that being fixedly connected with between jointing and the following jointing elastic doctor blade of eight circle distribution.
6. according to claim 2 or 3 or 4 or 5 described spiral casing scrapers, it is characterized in that top connection bottom and lower contact top respectively and form the upper cavity and the lower chamber of annular between the body; Last jointing is installed in the bottom of upper cavity, and following jointing is installed in the top of lower chamber; On last jointing and play jointing, vertical slotted hole is arranged respectively, and on the corresponding body in the bottom of each vertical slotted hole locating hole is arranged respectively, last jointing is through vertical slotted hole, locating hole and stop and pin and body-fixed links together; Following jointing is through vertical slotted hole, locating hole and stop that pin and body-fixed link together.
7. according to claim 1 or 2 or 3 or 4 or 5 described spiral casing scrapers, it is characterized in that the middle inside of top connection and the outer upper end of body are fixed together and are installed with check pin through screw thread; The lower end, the outside of the middle inside of lower contact and body is fixed together and is installed with check pin through screw thread.
8. spiral casing scraper according to claim 6 is characterized in that the middle inside of top connection and the outer upper end of body are fixed together and are installed with check pin through screw thread; The lower end, the outside of the middle inside of lower contact and body is fixed together and is installed with check pin through screw thread.
9. according to claim 1 or 2 or 3 or 4 or 5 described spiral casing scrapers, it is characterized in that the middle inside of top connection and the outer upper end of body are fixed together and are installed with check pin through screw thread; The lower end, the outside of the middle inside of lower contact and body is fixed together and is installed with check pin through screw thread.
10. spiral casing scraper according to claim 8 is characterized in that conical internal thread is arranged at the top of top connection, in the bottom of lower contact conical internal thread is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120389266 CN202228044U (en) | 2011-10-13 | 2011-10-13 | Spiral casing scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120389266 CN202228044U (en) | 2011-10-13 | 2011-10-13 | Spiral casing scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228044U true CN202228044U (en) | 2012-05-23 |
Family
ID=46078632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120389266 Expired - Lifetime CN202228044U (en) | 2011-10-13 | 2011-10-13 | Spiral casing scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228044U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330544A (en) * | 2011-10-13 | 2012-01-25 | 中国石油集团西部钻探工程有限公司 | Spiral casing scraper |
| CN103541690A (en) * | 2013-11-14 | 2014-01-29 | 华鼎鸿基石油工程技术(北京)有限公司 | Pigging and skiving device |
| CN106639983A (en) * | 2016-11-30 | 2017-05-10 | 中国海洋石油总公司 | Variable-diameter tube scraper of casing pipe |
-
2011
- 2011-10-13 CN CN 201120389266 patent/CN202228044U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330544A (en) * | 2011-10-13 | 2012-01-25 | 中国石油集团西部钻探工程有限公司 | Spiral casing scraper |
| CN103541690A (en) * | 2013-11-14 | 2014-01-29 | 华鼎鸿基石油工程技术(北京)有限公司 | Pigging and skiving device |
| CN103541690B (en) * | 2013-11-14 | 2017-01-11 | 华鼎鸿基石油工程技术(北京)有限公司 | Pigging and skiving device |
| CN106639983A (en) * | 2016-11-30 | 2017-05-10 | 中国海洋石油总公司 | Variable-diameter tube scraper of casing pipe |
| CN106639983B (en) * | 2016-11-30 | 2018-12-14 | 中国海洋石油集团有限公司 | A kind of reducing casing pipeline scraper |
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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: 20120523 |
|
| CX01 | Expiry of patent term |