CN101446181A - Novel centralizer for screwdrill - Google Patents
Novel centralizer for screwdrill Download PDFInfo
- Publication number
- CN101446181A CN101446181A CNA2008101539894A CN200810153989A CN101446181A CN 101446181 A CN101446181 A CN 101446181A CN A2008101539894 A CNA2008101539894 A CN A2008101539894A CN 200810153989 A CN200810153989 A CN 200810153989A CN 101446181 A CN101446181 A CN 101446181A
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- CN
- China
- Prior art keywords
- centralizer
- screwdrill
- hard alloy
- novel
- weldering
- 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.)
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Abstract
The invention relates to a novel centralizer for screwdrill. The lower part of the centralizer is provided with a hard alloy. An abrasion-resistant centralizing surface is formed by the hard alloy and the surface having hard alloy block. In the technical solution, the service life of the centralizer can be improved and the hard alloy can be welded when the diameter is wore to small size, thereby reducing cost of materials. The centralizer has the advantages of simple and convenient remodel, and good using effect without changing the original design structure.
Description
Technical field
The present invention relates to helicoid hydraulic motor, particularly a kind of novel centralizer for screwdrill.
Background technology
In the prior art, as shown in Figure 2, centralizer set upright the surface by the surface composition of the hard alloy blocks of inlaying by certain geometry arrangement, after the work a period of time of going into the well, because the honing of bottom, cause and set upright the surface diameter size and reduce and lost efficacy.
Summary of the invention
The purpose of this invention is to provide a kind of novel centralizer for screwdrill, pass through the technical program, can reduce the wearing and tearing of centralizer, improve the application life of centralizer, and drilling tool is carried when finding that size reduces behind the well, can carry out the weldering of carbide alloy shop again, also can continue to use, to remedy the deficiencies in the prior art.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of novel centralizer for screwdrill, shop weldering carbide alloy below centralizer is by the carbide alloy face and the wear-resisting face of setting upright of surface composition that studs with hard alloy blocks of shop weldering.
The beneficial effect of novel centralizer for screwdrill of the present invention is: 1, not only can improve the application life of centralizer by the technical program, and can carry out the weldering of carbide alloy shop once more after finding that size wearing and tearing, diameter diminish; 2, this device does not change the original any structure that relates to of helicoid hydraulic motor, and repacking is simple, convenient, and result of use is good.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a centralizer structure schematic diagram in the prior art.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the centralizer for screwdrill that the present invention relates to, it is positioned at the lower end of helicoid hydraulic motor, and the nominal size and the borehole diameter of external diameter are basic identical, and centralizer is connected by taper thread with the universal drive shaft housing.The centralizer housing is the shell of driving-shaft assembly.
In the embodiments of the invention, described centralizer wiper block and object are that an integral material is made.
The above only is a kind of embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (2)
1, a kind of novel centralizer for screwdrill (also claiming stabilizer) is characterized in that: shop, the below weldering carbide alloy of centralizer, and by the carbide alloy face and the wear-resisting face of setting upright of surface composition that studs with hard alloy blocks of shop weldering.
2, a kind of novel centralizer for screwdrill according to claim 1 is characterized in that: the carbide alloy of described shop weldering below centralizer, and with the wear-resisting face of setting upright of the surface composition that studs with hard alloy blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101539894A CN101446181A (en) | 2008-12-11 | 2008-12-11 | Novel centralizer for screwdrill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101539894A CN101446181A (en) | 2008-12-11 | 2008-12-11 | Novel centralizer for screwdrill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101446181A true CN101446181A (en) | 2009-06-03 |
Family
ID=40742037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101539894A Pending CN101446181A (en) | 2008-12-11 | 2008-12-11 | Novel centralizer for screwdrill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101446181A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041235A (en) * | 2015-09-07 | 2015-11-11 | 山西风雷钻具有限公司 | Transmission shaft shell used for screw drill |
| CN105178857A (en) * | 2015-09-23 | 2015-12-23 | 中国石油集团西部钻探工程有限公司 | Drilling tool stabilizer for 165mm unconventional directional well borehole |
| CN117307055A (en) * | 2023-11-24 | 2023-12-29 | 山东健源石油工程技术有限公司 | Series-connection type anti-drop centralizer |
-
2008
- 2008-12-11 CN CNA2008101539894A patent/CN101446181A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041235A (en) * | 2015-09-07 | 2015-11-11 | 山西风雷钻具有限公司 | Transmission shaft shell used for screw drill |
| CN105178857A (en) * | 2015-09-23 | 2015-12-23 | 中国石油集团西部钻探工程有限公司 | Drilling tool stabilizer for 165mm unconventional directional well borehole |
| CN117307055A (en) * | 2023-11-24 | 2023-12-29 | 山东健源石油工程技术有限公司 | Series-connection type anti-drop centralizer |
| CN117307055B (en) * | 2023-11-24 | 2024-01-23 | 山东健源石油工程技术有限公司 | Series-connection type anti-drop centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090603 |