CN2632310Y - Casing scraper - Google Patents
Casing scraper Download PDFInfo
- Publication number
- CN2632310Y CN2632310Y CN 03265540 CN03265540U CN2632310Y CN 2632310 Y CN2632310 Y CN 2632310Y CN 03265540 CN03265540 CN 03265540 CN 03265540 U CN03265540 U CN 03265540U CN 2632310 Y CN2632310 Y CN 2632310Y
- Authority
- CN
- China
- Prior art keywords
- bushing
- scraping
- scraper
- main body
- bits
- 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
Links
Landscapes
- Brushes (AREA)
Abstract
The utility model relates to a bushing scraper, which mainly solves the incomplete scraping of the existed bushing scraper and easy damage of the bushing inner wall. The utility model is characterized in that a scraping chip main body (2) with a brush (3) is embedded on the outer wall of the bushing scraper. The difference between the outer diameter of the brush (3) and the outer diameter of the lower bell mouth of the scraping chip main body (2) is a positive valve. Because the brush (3) of the bushing scraper clings to the inner wall of the bushing, the bushing scraper firstly can scrape the residual wax on the bushing, effect of the wax scraping is good; the bushing scraper also has function of righting and prevents the lower bell mouth of the scraping chip main body (2) against damaging the bushing.
Description
Technical field:
The utility model relates to used downhole tool in the oil recovery field, oil field, relates to a kind of casing scraper specifically.
Background technology:
In oil recovery field, oil field, along with deepening continuously of oil field development, particularly used since the sucker rod pumping, casing scraper is widely used in oil-water well underground work construction.Present existing casing scraper device mouth is a bell mouth shape, device because device body external diameter causes existing casing scraper not contact entirely with sleeve pipe less than device mouth external diameter, causes paraffin cutting not thorough as straight tube, and scraper contacts firmly with internal surface of sleeve pipe, easily causes internal surface of sleeve pipe to damage.
The utility model content:
In order to overcome the problem that existing casing scraper scraping thoroughly and does not easily cause the internal surface of sleeve pipe damage; the utility model provides a kind of casing scraper; this kind casing scraper has that paraffin cutting is effective, the effect of protective casing; in addition as required, this flexible sleeve scraper can also replace sand clean out pipe to carry out work.
Technical solutions of the utility model are: this casing scraper, have the bits of scraping main body, scraping the bits main body is that tubulose and lower end are shaped as horn mouth, scrape bits main body pipe outer wall and be embedded with hairbrush, the difference of the external diameter of hairbrush and the bell-mouthed external diameter of scraping the bits main body on the occasion of.
In addition, this kind casing scraper can also be built-in with sand clean out pipe scraping bits main body pipe, and sand clean out pipe passes through spiral marking connection with scraping to consider to be worth doing between the main body.
The beneficial effect that the utlity model has is: owing to take the external diameter of its hairbrush of casing scraper in the such scheme to be slightly larger than casing inner diameter, paraffin cutting is effective, and play centralizing function because the hairbrush on this casing scraper can be close to internal surface of sleeve pipe, prevent to scrape the horn mouth damage sleeve pipe of bits main body lower end.
Description of drawings:
Accompanying drawing 1 is the utility model structure sectional view.
1-sand clean out pipe among the figure, 2-scrapes the bits main body, the 3-hairbrush.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By shown in Figure 1, this casing scraper, have can scrape off most of wax in the down-hole casing scrape bits main body 2, be in charge of outer wall and be embedded with hairbrush 3 scraping bits main body 2 straight sections, the external diameter of hairbrush 3 with scrape bits main body 2 bell-mouthed external diameter difference on the occasion of, promptly the external diameter of hairbrush 3 be greater than scrape bits main body 2 bell-mouthed external diameter.In order to obtain the internal diameter that the external diameter of effect hairbrush 3 preferably also is larger than the sleeve pipe of scraping.In actual applications, the external diameter of hairbrush will be selected according to the internal diameter of sleeve pipe.This kind casing scraper is when its G.I.H, and the hairbrush 3 on it is close to internal surface of sleeve pipe, scrapes off by scraping remaining wax after bits main body 2 scrapings, and plays the effect of the setting upright scraper horn mouth damage sleeve pipe with scratch resistant bits device main body 2 lower ends.
In addition, this kind casing scraper can also be built-in with sand clean out pipe 1 scraping bits main body 2 pipes, when the horn mouth of scraping bits main body 2 lower ends reaches the sand face degree of depth, carries out sand washing by sand clean out pipe 1.
Claims (2)
1, a kind of casing scraper, have and scrape bits main body (2), scrape bits main bodys (2) and be shaped as horn mouth for tubulose and lower end, it is characterized in that: described bits main bodys (2) the pipe outer wall of scraping is embedded with hairbrush (3), the external diameter of described hairbrush (3) and described difference of scraping bits main body (2) lower end bell-mouthed external diameter be on the occasion of.
2, casing scraper according to claim 1 is characterized in that: be built-in with sand clean out pipe (1) at described bits main body (2) pipe of scraping, sand clean out pipe (1) passes through spiral marking connection with scraping to consider to be worth doing between the main bodys (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03265540 CN2632310Y (en) | 2003-06-12 | 2003-06-12 | Casing scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03265540 CN2632310Y (en) | 2003-06-12 | 2003-06-12 | Casing scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2632310Y true CN2632310Y (en) | 2004-08-11 |
Family
ID=34297812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03265540 Expired - Fee Related CN2632310Y (en) | 2003-06-12 | 2003-06-12 | Casing scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2632310Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194111A (en) * | 2016-08-30 | 2016-12-07 | 中国石油集团渤海钻探工程有限公司 | Down-hole casing steel wire wall scraper |
-
2003
- 2003-06-12 CN CN 03265540 patent/CN2632310Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194111A (en) * | 2016-08-30 | 2016-12-07 | 中国石油集团渤海钻探工程有限公司 | Down-hole casing steel wire wall scraper |
| CN106194111B (en) * | 2016-08-30 | 2019-02-15 | 中国石油集团渤海钻探工程有限公司 | Down-hole casing steel wire wall scraper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |